subject:(Trace elements)

University of Hawaii – Manoa

1. Dumas, Didier Pierre Heiarii. Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu.

Degree: 2016, University of Hawaii – Manoa

URL: http://hdl.handle.net/10125/101700

►

M.S. University of Hawaii at Manoa 2011.

Ordnance Reef (HI-06) served as a disposal site for discarded military munitions (DMM) after World War II. Since… (more)

Subjects/Keywords: trace elements

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APA (6^th Edition):

Dumas, D. P. H. (2016). Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu. (Thesis). University of Hawaii – Manoa. Retrieved from http://hdl.handle.net/10125/101700

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dumas, Didier Pierre Heiarii. “Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu.” 2016. Thesis, University of Hawaii – Manoa. Accessed January 17, 2021. http://hdl.handle.net/10125/101700.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dumas, Didier Pierre Heiarii. “Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu.” 2016. Web. 17 Jan 2021.

Vancouver:

Dumas DPH. Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu. [Internet] [Thesis]. University of Hawaii – Manoa; 2016. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/10125/101700.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dumas DPH. Spatial distribution and origin of major, minor and trace elements in the ordnance reef area on the Wai'anae coast of O'ahu. [Thesis]. University of Hawaii – Manoa; 2016. Available from: http://hdl.handle.net/10125/101700

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

2. Maulana, Ivan. Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release.

Degree: MS, Geology, 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/156808

► The Ocean Anoxic Event 2 (OAE-2) at the Cenomanian-Turonian boundary is recognized from a carbon isotope excursion (CIE) in the Eagle Ford (EF) Group, and… (more)

▼ The Ocean Anoxic Event 2 (OAE-2) at the Cenomanian-Turonian boundary is recognized from a carbon isotope excursion (CIE) in the Eagle Ford (EF) Group, and commonly attributed to global anoxic conditions in deeper marine settings. Whereas OAE are typically marked by widespread deposition of organic-rich shales, previous work shows diachroneity between the CIE and the organic-rich Lower EF, as well as anoxia-euxinia in the Western Interior Seaway of North America. We found evidence for periodic photic zone euxinia from an EF core, based on ratios of biomarkers and redox-sensitive trace elements. Sedimentary structures suggest depositional environments above storm wave base. Integration with a sequence-stratigraphic framework emphasizes the role of estuarine-style salinity stratification, subject to redox shifts caused by storm mixing in relatively shallow water depths. Independent zircon ages indicate that transition from the Lower to Upper EF occurs in the south before the north, consistent with a northward migration of this stratification mechanism as sea level rose. This implies that the redox states during deposition of the EF leading up to the CIE were influenced by regionally distinct mechanisms at relatively shallow water depths, instead of global anoxic conditions in deeper marine settings. Euxinic shales are rich in trace elements, so there are high treatment costs to remove trace elements that have been released to matrix acidizing fluids during production, before these fluids can be disposed or reused. By understanding mechanisms controlling the interaction between euxinic shales and acidizing fluids, it may be possible to improve the efficiency of unconventional production while simultaneously reducing environmental exposure. Trace element residency in and release from the EF were determined at different depths and under different temperatures and acid conditions. We found evidence that trace element release is mainly controlled by bulk trace element concentrations. This suggests that for the average rock, increased trace element release was associated with higher temperatures and acid concentrations, and these same conditions also resulted in higher sensitivity to trace element concentrations. Advisors/Committee Members: Tice, Michael (advisor), Herbert, Bruce (advisor), Wade, Terry (committee member), Marcantonio, Franco (committee member).

Subjects/Keywords: Euxinia; Trace Elements

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APA (6^th Edition):

Maulana, I. (2016). Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156808

Chicago Manual of Style (16^th Edition):

Maulana, Ivan. “Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release.” 2016. Masters Thesis, Texas A&M University. Accessed January 17, 2021. http://hdl.handle.net/1969.1/156808.

MLA Handbook (7^th Edition):

Maulana, Ivan. “Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release.” 2016. Web. 17 Jan 2021.

Vancouver:

Maulana I. Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release. [Internet] [Masters thesis]. Texas A&M University; 2016. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1969.1/156808.

Council of Science Editors:

Maulana I. Basin Geochemical Evolution of the Eagle Ford and Effects on Trace Element Release. [Masters Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/156808

Oregon State University

3. Oakley, Stewart M. The geochemical partitioning and bioavailability of trace metals in marine sediments.

Degree: PhD, Civil Engineering, 1980, Oregon State University

URL: http://hdl.handle.net/1957/42090

► Trace metals in the aquatic environment are generally concentrated on the surface of solid geochemical phases which eventually become incorporated into estuarine and marine sediments.… (more)

▼ Trace metals in the aquatic environment are generally concentrated on the surface of solid geochemical phases which eventually become incorporated into estuarine and marine sediments. The mechanism of trace metal concentration is believed to be adsorption with various geochemical phases such as hydrous metal oxides, clays, and organic matter. Metals in estuarine or marine sediments can thus be expected to be partitioned between different phases, depending on the concentration of the phase and the strength of the adsorption bond. The bioavailability of sediment-bound metals to deposit-feeding organisms will depend on trace metal partitioning and the kinetics of biological metal uptake from each geochemical phase. The present study was undertaken to develop models for trace metal partitioning and bioavailability in marine sediments. An equilibrium adsorption model was developed that can be used to predict the partitioning of trace metals between different geochemical phases in aquatic sediments from laboratory studies. The model uses conditional equilibrium constants determined from the linear portion of an adsorption isotherm. Conditional equilibrium constants deterit mined for the adsorption of Cu and Cd on bentonite clay, Fe(OH)₃, Mn0₂, and humic acid in seawater show that the model is applicable for trace metal concentrations existing in the natural environment. Based on the laboratory results, the model predicts that the clay fraction may be a major sink for Cu and Cd in marine sediments. A kinetic bioavailability model was then developed which can be used to estimate the relative bioavailability of trace metals from both different sediment phases and seawater under short-term laboratory conditions. This model was used to determine the bioavailability of Cu and Cd from several sediment phases (bentonite clay, humic acid, Fe(OH)₃) and seawater to the deposit-feeding polychaete worm, Abarenicola pacifica. The results suggest that, under natural conditions similar to those used in this study, the bioavailability of sediment-bound Cu and Cd to A. pacifica can be much more significant than that of seawater. Advisors/Committee Members: Williamson, Keneth J. (advisor), Tinsley, Ian (committee member).

Subjects/Keywords: Trace elements

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APA (6^th Edition):

Oakley, S. M. (1980). The geochemical partitioning and bioavailability of trace metals in marine sediments. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/42090

Chicago Manual of Style (16^th Edition):

Oakley, Stewart M. “The geochemical partitioning and bioavailability of trace metals in marine sediments.” 1980. Doctoral Dissertation, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/42090.

MLA Handbook (7^th Edition):

Oakley, Stewart M. “The geochemical partitioning and bioavailability of trace metals in marine sediments.” 1980. Web. 17 Jan 2021.

Vancouver:

Oakley SM. The geochemical partitioning and bioavailability of trace metals in marine sediments. [Internet] [Doctoral dissertation]. Oregon State University; 1980. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/42090.

Council of Science Editors:

Oakley SM. The geochemical partitioning and bioavailability of trace metals in marine sediments. [Doctoral Dissertation]. Oregon State University; 1980. Available from: http://hdl.handle.net/1957/42090

Oregon State University

4. Ungerer, Carl Andre. Atmospheric trace element abundances associated with slash burning.

Degree: MS, Chemistry, 1981, Oregon State University

URL: http://hdl.handle.net/1957/42244

► The atmospheric trace element abundances associated with slash burning have been measured by instrumental neutron activation analysis (INAA). On site ground level samples were collected… (more)

Subjects/Keywords: Trace elements

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APA (6^th Edition):

Ungerer, C. A. (1981). Atmospheric trace element abundances associated with slash burning. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42244

Chicago Manual of Style (16^th Edition):

Ungerer, Carl Andre. “Atmospheric trace element abundances associated with slash burning.” 1981. Masters Thesis, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/42244.

MLA Handbook (7^th Edition):

Ungerer, Carl Andre. “Atmospheric trace element abundances associated with slash burning.” 1981. Web. 17 Jan 2021.

Vancouver:

Ungerer CA. Atmospheric trace element abundances associated with slash burning. [Internet] [Masters thesis]. Oregon State University; 1981. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/42244.

Council of Science Editors:

Ungerer CA. Atmospheric trace element abundances associated with slash burning. [Masters Thesis]. Oregon State University; 1981. Available from: http://hdl.handle.net/1957/42244

Oregon State University

5. Rivera, Maria Rita Dacanay. Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments.

Degree: MS, Chemistry, 1979, Oregon State University

URL: http://hdl.handle.net/1957/42600

► Eleven hand specimen whole rock (WR) samples (25-200 g each) and 33 fragments (0.5-0.8 g each) from a single basaltic flow at Picture Gorge, Oregon… (more)

Subjects/Keywords: Trace elements

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APA (6^th Edition):

Rivera, M. R. D. (1979). Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/42600

Chicago Manual of Style (16^th Edition):

Rivera, Maria Rita Dacanay. “Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments.” 1979. Masters Thesis, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/42600.

MLA Handbook (7^th Edition):

Rivera, Maria Rita Dacanay. “Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments.” 1979. Web. 17 Jan 2021.

Vancouver:

Rivera MRD. Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments. [Internet] [Masters thesis]. Oregon State University; 1979. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/42600.

Council of Science Editors:

Rivera MRD. Variations in trace element abundances in small fragments from a single terrestrial basaltic flow : applications to 59 Apollo-17 mare basaltic fragments. [Masters Thesis]. Oregon State University; 1979. Available from: http://hdl.handle.net/1957/42600

Oregon State University

6. Cheung, Isabella Shiu Wing. Indoor/outdoor atmospheric trace element abundances.

Degree: MS, Chemistry, 1978, Oregon State University

URL: http://hdl.handle.net/1957/43879

► The atmospheric trace element abundances associated with "indoor" and '"outdoor" air particulate have been measured for university chemistry laboratories, typical homes, modern office buildings, hospital… (more)

Subjects/Keywords: Trace elements

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APA (6^th Edition):

Cheung, I. S. W. (1978). Indoor/outdoor atmospheric trace element abundances. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/43879

Chicago Manual of Style (16^th Edition):

Cheung, Isabella Shiu Wing. “Indoor/outdoor atmospheric trace element abundances.” 1978. Masters Thesis, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/43879.

MLA Handbook (7^th Edition):

Cheung, Isabella Shiu Wing. “Indoor/outdoor atmospheric trace element abundances.” 1978. Web. 17 Jan 2021.

Vancouver:

Cheung ISW. Indoor/outdoor atmospheric trace element abundances. [Internet] [Masters thesis]. Oregon State University; 1978. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/43879.

Council of Science Editors:

Cheung ISW. Indoor/outdoor atmospheric trace element abundances. [Masters Thesis]. Oregon State University; 1978. Available from: http://hdl.handle.net/1957/43879

Oregon State University

7. Stanford, Harold Milford. The concentration and oxidation state of chromium in sea water.

Degree: MS, Oceanography, 1970, Oregon State University

URL: http://hdl.handle.net/1957/29383

Subjects/Keywords: Trace elements

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APA (6^th Edition):

Stanford, H. M. (1970). The concentration and oxidation state of chromium in sea water. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/29383

Chicago Manual of Style (16^th Edition):

Stanford, Harold Milford. “The concentration and oxidation state of chromium in sea water.” 1970. Masters Thesis, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/29383.

MLA Handbook (7^th Edition):

Stanford, Harold Milford. “The concentration and oxidation state of chromium in sea water.” 1970. Web. 17 Jan 2021.

Vancouver:

Stanford HM. The concentration and oxidation state of chromium in sea water. [Internet] [Masters thesis]. Oregon State University; 1970. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/29383.

Council of Science Editors:

Stanford HM. The concentration and oxidation state of chromium in sea water. [Masters Thesis]. Oregon State University; 1970. Available from: http://hdl.handle.net/1957/29383

8. Λέτσιου, Σοφία. Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες.

Degree: 2011, Harokopio University; Χαροκόπειο Πανεπιστήμιο

URL: http://hdl.handle.net/10442/hedi/33357

► To σελήνιο (Se) αποτελεί απαραίτητο ιχνοστοιχείο για τη ζωή ασκώντας τις δράσεις του ως απαραίτητο δομικό στοιχείο των σεληνοπρωτεινών (υπεροξειδάσες της γλουταθειόνης, σεληνοπρωτείνη Ρ, αναγωγάση… (more)

▼ To σελήνιο (Se) αποτελεί απαραίτητο ιχνοστοιχείο για τη ζωή ασκώντας τις δράσεις του ως απαραίτητο δομικό στοιχείο των σεληνοπρωτεινών (υπεροξειδάσες της γλουταθειόνης, σεληνοπρωτείνη Ρ, αναγωγάση της θειορεδοξίνης, αποϊωδιονάσες της ιωδοθυροξίνης κ.α.), οι οποίες με τη σειρά τους έχουν ενεργό ρόλο στους αντιοξειδωτικούς/αντιφλεγμονώδεις μηχανισμούς του οργανισμού, στη διατήρηση της οξειδοαναγωγικής κατάστασης των κυττάρων και στο μεταβολισμό των θυρεοειδικών ορμονών. Συνεπώς, η επαρκής πρόσληψη Se με τη διατροφή είναι ιδιαίτερα σημαντική για τη σωστή λειτουργία του οργανισμού. Ωστόσο, οι διατροφικοί παράγοντες που καθορίζουν τα επίπεδα Se στον ανθρώπινο οργανισμό δεν είναι πλήρως διευκρινισμένοι ενώ καμία μεγάλη επιδημιολογική μελέτη δεν έχει γίνει στον Ελληνικό πληθυσμό. Παράλληλα, αν και η αυξημένη πρόσληψη Se έχει συσχετιστεί θετικά με το κίνδυνο εμφάνισης συγκεκριμένων νοσημάτων (διαβήτης, υπέρταση), η σχέση του με παράγοντες κινδύνου για καρδιαγγειακά νοσήματα είναι πολύ λιγότερο μελετημένη και τα αποτελέσματα αντικρουόμενα. Αυτό εν μέρει οφείλεται στις πλειοτροπικές και πολλές φορές αντίθετες δράσεις των σεληνοπρωτεϊνών στους μηχανισμούς εμφάνισης καρδιαγγειακών νοσημάτων. Η συσχέτιση συνεπώς των επιπέδων ολικού Se με παράγοντες κινδύνου για καρδιαγγειακά νοσήματα δεν επαρκεί και είναι πλέον απαραίτητη η ανάπτυξη ισχυρών αναλυτικών μεθόδων, οι οποίες θα έχουν την ικανότητα να προσδιορίζουν ταυτόχρονα τις διάφορες σεληνομορφές στα βιολογικά δείγματα . Για τις ανάγκες της συγκεκριμένης διατριβής, χρησιμοποιήθηκε αναλυτική μέθοδος βασισμένη στη χρωματογραφία συγγένειας σε συνδυασμό με φασματομετρία μάζας επαγωγικά συζευγμένου πλάσματος (dAF-(LC)-ICP/MS). Στη συνέχεια της μελέτης, πραγματοποιήθηκε περαιτέρω διερεύνηση της συνύπαρξης μικρών οργανικών μορίων και της υπεροξειδάσης της γλουταθειόνης-3. Για το σκοπό αυτό έγινε σύζευξη χρωματογραφικής στήλης μοριακού αποκλεισμού στο σύστημα dAF-ICP-MS. Τα αποτελέσματα των αναλυτικών μεθόδων ανέδειξαν ότι το Se βρίσκεται με τη μορφή SelP( 54%), GPx-3 (26%), SelAlb (12%) και άγνωστης μορφή (8%) στον ορό αίματος. Από την εφαρμογή της μεθόδου σε ένα υποπληθυσμό της μελέτης «ΑΤΤΙΚΗ»(Ν=399) προέκυψε ότι ένα σημαντικό μέρος του Ελληνικού πληθυσμού, όπως αυτό τουλάχιστον εκφράζεται από τη μελέτη ΑΤΤΙΚΗ, έχει έλλειψη σεληνίου. Οι διατροφικοί παράγοντες που συσχετίζονται θετικά με τα επίπεδα Se είναι η κατανάλωση κόκκινου κρέατος και πουλερικών (κρεατοφαγική δίαιτα). Η ανάλυση των σχέσεων σεληνίου/πρωτεινών σεληνίου με παράγοντες καρδιαγγειακού κινδύνου έδειξε ότι υπάρχει σημαντική συσχέτιση του Se με τους περισσότερους κλασσικούς παράγοντες (ηλικία, παχυσαρκία, κάπνισμα, υπέρταση, γλυκαιμία, λιπιδαιμία, δείκτες οξειδωτικού στρες και φλεγμονής), η οποία διαμεσολαβείται από διαφορετικές πρωτεΐνες σεληνίου. Παράλληλα, διαφάνηκε ότι όχι μόνο το ολικό σελήνιο αλλά κυρίως η διαφορετική κατανομή μου στις πρωτεΐνες σεληνίου σχετίζονται με τους παράγοντες κινδύνου γεγονός που υποδεικνύει ότι η κατανομή αυτή αποτελεί καλύτερο δείκτη της κατάστασης Se ενός ανθρώπου και ίσως αποδίδει…

Subjects/Keywords: Σελήνιο; Ιχνοστοιχεία; Selenium; Trace elements

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APA (6^th Edition):

Λέτσιου, . �. (2011). Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες. (Thesis). Harokopio University; Χαροκόπειο Πανεπιστήμιο. Retrieved from http://hdl.handle.net/10442/hedi/33357

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Λέτσιου, Σοφία. “Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες.” 2011. Thesis, Harokopio University; Χαροκόπειο Πανεπιστήμιο. Accessed January 17, 2021. http://hdl.handle.net/10442/hedi/33357.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Λέτσιου, Σοφία. “Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες.” 2011. Web. 17 Jan 2021.

Vancouver:

Λέτσιου �. Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες. [Internet] [Thesis]. Harokopio University; Χαροκόπειο Πανεπιστήμιο; 2011. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/10442/hedi/33357.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Λέτσιου �. Χαρακτηρισμός και ποσοτικός προσδιορισμός μορφών σεληνίου σε ορό αίματος και συσχέτισή του με διατροφικούς παράγοντες. [Thesis]. Harokopio University; Χαροκόπειο Πανεπιστήμιο; 2011. Available from: http://hdl.handle.net/10442/hedi/33357

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Notre Dame

9. Stefanie R Lewis. Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>.

Degree: Civil and Environmental Engineering and Earth Sciences, 2018, University of Notre Dame

URL: https://curate.nd.edu/show/hm50tq60n4g

► This thesis examines nuclear forensic signatures of several uraninite samples from North America (n=14) and the Democratic Republic of Congo (n=1) for enhancing and… (more)

Subjects/Keywords: Uraninite; Nuclear Forensic; trace elements

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APA (6^th Edition):

Lewis, S. R. (2018). Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/hm50tq60n4g

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lewis, Stefanie R. “Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>.” 2018. Thesis, University of Notre Dame. Accessed January 17, 2021. https://curate.nd.edu/show/hm50tq60n4g.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lewis, Stefanie R. “Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>.” 2018. Web. 17 Jan 2021.

Vancouver:

Lewis SR. Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>. [Internet] [Thesis]. University of Notre Dame; 2018. [cited 2021 Jan 17]. Available from: https://curate.nd.edu/show/hm50tq60n4g.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lewis SR. Geochemical and Isotopic Constraints for Uraninite Formation: Implications for Nuclear Forensic Analyses</h1>. [Thesis]. University of Notre Dame; 2018. Available from: https://curate.nd.edu/show/hm50tq60n4g

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

10. Whitehurst, William Ashley III. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.

Degree: MS, College of Agriculture, 2012, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/2533

► Objectives of this experiment were to compare rate and efficiency of gain, and conception rates of yearling heifers supplemented with Cu, Zn and Mn as… (more)

▼ Objectives of this experiment were to compare rate and efficiency of gain, and conception rates of yearling heifers supplemented with Cu, Zn and Mn as either methionine chelated trace mineral (CTM) or the same minerals in SO 4 form. The experimental design utilized 3 ranches, each having 2 replications per treatment with pen as the experimental unit for ADG, DMI and G:F. Heifer was the experimental unit for pregnancy rates. Ranch 1 contained 498 Angus heifers, ranch 2, 236 Red Angus cross heifers, and ranch 3, 1,742 Angus cross heifers. All heifers were fed silage based diets that contained approximately 13.5% CP, 64% TDN (DM basis) and had low levels of SO 4, Mo or Fe in feed or H 2O. Diets contained 24 ppm Cu, 70 ppm Zn and 64 ppm Mn. Supplements were fed for 181 d (Ranch 1), 149 d (Ranch 2) and 151 d (Ranch 3) prior to breeding. Heifers were weighed at trial initiation (BW 270 kg ± 2.8), end of drylot feeding, at breeding and at pregnancy diagnosis. Ranch 1 heifers were bred by AI followed by natural service (45 d breeding), Ranch 2 heifers were bred by natural service (50 d breeding) and Ranch 3 heifers were bred by AI once. Pregnancy was determined via ultrasound. Ranch effects were significant (P < 0.001) for gain, ADG, G:F and overall pregnancy rate, but not for conception in the first 21 d. No ranch x treatment interactions were detected for any measurements (P e 0.47) and no differences (P e 0.46) were detected between treatments for total gain, ADG, G:F or the number of heifers that conceived during the first 21 d on Ranches 1 or 2. Conception rate increased (P = 0.03) for CTM heifers from ranch 3 with one AI breeding. Across ranches, conception rates during the first 21 d of breeding did not differ (P = 0.12) between treatments but overall pregnancy rate was greater (P = 0.05) for heifers supplemented with CTM. Under the conditions of this experiment results suggest that supplementation with CTM contributed to greater pregnancy rates in heifers. Advisors/Committee Members: Chairperson, Graduate Committee: John Paterson. (advisor).

Subjects/Keywords: Heifers.; Trace elements.; Growth.; Reproduction.

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APA (6^th Edition):

Whitehurst, W. A. I. (2012). Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/2533

Chicago Manual of Style (16^th Edition):

Whitehurst, William Ashley III. “Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.” 2012. Masters Thesis, Montana State University. Accessed January 17, 2021. https://scholarworks.montana.edu/xmlui/handle/1/2533.

MLA Handbook (7^th Edition):

Whitehurst, William Ashley III. “Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers.” 2012. Web. 17 Jan 2021.

Vancouver:

Whitehurst WAI. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. [Internet] [Masters thesis]. Montana State University; 2012. [cited 2021 Jan 17]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2533.

Council of Science Editors:

Whitehurst WAI. Comparison of organic vs. inorganic trace minerals on rate and efficiency of gain and conception rates in beef heifers. [Masters Thesis]. Montana State University; 2012. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2533

Univerzitet u Beogradu

11. Morić, Ivana R., 1971-. Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu.

Degree: 2020, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:21695/bdef:Content/get

►

Mолекуларна биологија / Molecular biology

Mycobacterium avium je važan humani intracelulami patogen, koji prvenstveno inficira mononukleame fagocite. Sredinski uslovi unutar fagozoma u kojima se može… (more)

▼

Mолекуларна биологија / Molecular biology

Mycobacterium avium je važan humani intracelulami patogen, koji prvenstveno inficira mononukleame fagocite. Sredinski uslovi unutar fagozoma u kojima se može naći ova mikobakterija, kao što je koncentracija elemenata u tragovima, utiče na ekspresiju mikobakterijskih gena i intracelulamo preživljavanje. Koristeći mikroprobu sa tvrdim X zracima u prethodnom radu su analizirane koncentracije hemijskih elemenata unutar fagozoma C57BL/6 mišijih makrofaga koji su inficirani patogenim mikobakterijskim vrstama - M. tuberculosis i M. avium, odnosno nepatogenom vrstom, M. smegmatis. U fagozomima koji su sadržali patogene mikobakterije, koncentracija gvožđa je rasla tokom vremena, dok je u onim sa nepatogenom M. smegmatis koncentracija gvožđa opadala. Značajna razlika u koncentraciji nekoliko drugih elemenata u fagozomima je zabeležena između patogenih mikobakterija u prvom satu infekcije, kao i izmedu patogenih mikobakterija i M. smegmatis. Ovi rezultati ukazuju na postojanje patogen-specifične mikrosredine u endozomalnom sistemu domaćina. U ovom radu istraživanja su proširena na infekcije U937 ćelijske linije, modela humane mikobakterijemije, sa M. avium wt i M. avium pksl2 mutantom. Gen pks!2 gene je kandidat za gen za virulentnost. Njegov produkt je uključen u sintezu komponente ćelijskog zida. Koncentracija gvožđa u U937 fagozomima nije porasla posle 24 h infekcije, kao što je zabeleženo u C57BL/6 fagozomima. Sa druge strane, u U937 fagozomima koji su sadržali M. avium pksl2 mutant koncentracija gvožđa je statistički značajno opala posle 24 h infekcije. Statistički značajan porast koncentracije kalijuma između prvog i 24. sata infekcije je zabeležen u U937 fagozomima koji su sadržali M. avium wt, za razliku od C57BL/6 fagozoma. Slično povećanje koncentracije kalijuma u toku infekcije je zabeleženo u U937 fagozomima sa M. avium pksl2 mutantom. Razmatrana je mogućnost da su kalijumski kanali prisutni na fagozomima makrofaga i da mogu biti povezani sa baktericidnim dejstvom, slično neophodnom prisustvu kalijumskih kanala za baktericidnu funkciju neutrofila. Takode je traženo postojanje razlika između C57BL/6 i U937 fagozoma, kao i između U937 fagozoma koji su sadržali M. avium wt, odnosno M. avium pks!2 mutant, koje bi mogle ukazati na ulogu produkta pksl2 gena u virulenciji. Ovaj rad ukazuje na značaj korišćenja mikroprobe sa tvrdim X zracima u proučavanju patogenih mikobakterijskih infekcija i podržava procenu da bi buduće studije sa tehnički poboljšanom mikroprobom sa tvrdim X zracima omogućile bolje razumevanje virulentnosti infektivnih patogena.

Advisors/Committee Members: Knežević-Vukčević, Jelena, 1955-, 12438119.

Subjects/Keywords: mycobacteria; phagosomes; trace elements

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APA (6^th Edition):

Morić, Ivana R., 1. (2020). Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:21695/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Morić, Ivana R., 1971-. “Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu.” 2020. Thesis, Univerzitet u Beogradu. Accessed January 17, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:21695/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Morić, Ivana R., 1971-. “Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu.” 2020. Web. 17 Jan 2021.

Vancouver:

Morić, Ivana R. 1. Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu. [Internet] [Thesis]. Univerzitet u Beogradu; 2020. [cited 2021 Jan 17]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:21695/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Morić, Ivana R. 1. Primena mikroskopije X zracima u mapiranju hemijskih elemenata u Mycobacterium avium pks12 mutantu. [Thesis]. Univerzitet u Beogradu; 2020. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:21695/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

12. ALBERTI HENRICHS, ISADORA. The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies.

Degree: School of Natural Sciences. Discipline of Geology, 2020, Trinity College Dublin

URL: http://hdl.handle.net/2262/92253

► Apatite is a common accessory mineral in igneous, sedimentary and metamorphic rocks. It has potential as a provenance indicator in clastic sedimentary systems, as it… (more)

▼ Apatite is a common accessory mineral in igneous, sedimentary and metamorphic rocks. It has potential as a provenance indicator in clastic sedimentary systems, as it can host a wide variety of trace elements in its crystal structure and can yield thermochronological age information. However, the processes controlling the trace element and U-Pb systematics of metamorphic apatite remain poorly understood, and metamorphic apatite remains significantly under-represented in compositional provenance databases linking apatite trace-element chemistry to its corresponding parent rock type. In this thesis, I investigate the trace-element and U-Pb systematics of metamorphic apatite from a suite of twenty-two bedrock samples of diverse metamorphic grade and protolith type, sampled from a variety of metamorphic terranes (Chapter 2); nineteen samples of metapelites and calcareous metapelites from two progressive metamorphic sequences from the Central Alps (Chapter 3); and a modern river sediment sample from the Central Alps which sourced a variety of metamorphic units (Chapter 4). U-Pb and trace element data were acquired from apatite mineral separates and for some samples in situ on thin sections by LA-Q-ICPMS. The trace element data were explored using chondrite- and whole-rock normalized multi-element plots, PCA plots and SVM biplots. The results show that metamorphic apatite from low- to medium-grade metapelites and metabasites can be easily distinguished from all types of igneous apatite as it is significantly depleted in Th, REE, and Y. Depletion in Th and REE+Y is attributed to growth of co-genetic epidote, which is the dominant carrier phase of the REE+Y, Th, and U in all the low- to medium-grade samples. LA- Q-ICP-MS imaging demonstrates that low REE+Y, Th, and U metamorphic apatite rims can nucleate on detrital igneous apatite precursors characterised by high REE+Y, Th, and U. With increasing metamorphic grade, 1) relict detrital apatite is consumed, 2) the coherence of the U- Pb concordia systematics and the age precision improve, and 3) the degree of dispersion on metamorphic apatite multi-element plots decreases. These results can be readily employed in provenance studies as demonstrated in Chapter 4 of this thesis, where metamorphic apatite detritus from a modern river sediment sample from the Alps was classified by both U-Pb age and rock type information, using apatite trace elements as a lithology classification tool. Advisors/Committee Members: Chew, David.

Subjects/Keywords: Apatite; Trace elements; Geochemistry

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APA (6^th Edition):

ALBERTI HENRICHS, I. (2020). The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies. (Thesis). Trinity College Dublin. Retrieved from http://hdl.handle.net/2262/92253

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

ALBERTI HENRICHS, ISADORA. “The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies.” 2020. Thesis, Trinity College Dublin. Accessed January 17, 2021. http://hdl.handle.net/2262/92253.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

ALBERTI HENRICHS, ISADORA. “The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies.” 2020. Web. 17 Jan 2021.

Vancouver:

ALBERTI HENRICHS I. The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies. [Internet] [Thesis]. Trinity College Dublin; 2020. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2262/92253.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

ALBERTI HENRICHS I. The trace element and U-Pb systematics of metamorphic apatite and its application in provenance studies. [Thesis]. Trinity College Dublin; 2020. Available from: http://hdl.handle.net/2262/92253

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Texas – Austin

13. Casteel, Richard Cain. The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study.

Degree: MSin Geological Sciences, Geological Sciences, 2011, University of Texas – Austin

URL: http://hdl.handle.net/2152/ETD-UT-2011-08-4177

► The overall goal of this study is to determine the resolution and type of proxy that any one drip site can provide for the determination… (more)

▼ The overall goal of this study is to determine the resolution and type of proxy that any one drip site can provide for the determination of past climate. The study examines surface conditions (effective rainfall, temperature, PDSI), cave characteristics (cave geometry, cave air CO2, location), drip site characteristics (drip rate, drip rate response to rainfall), and drip water characteristics (pH, trace element ratios, alkalinity, temperature). The study encompasses two distinctly different caves, Inner Space Cavern (Chapter 2) and Westcave (Chapter 3). A goal of Chapter 2 is to identify drip sites where there is an intra-annual climate signal, which can assist with high resolution paleo-drought reconstructions when extended to speleothem studies. To be considered an intra-annual climate sensitive drip site, a site should display statistically significant correlations between (1) effective rainfall and drip rate; (2) effective rainfall and Mg/Ca; (3) drip rate and Mg/Ca; (4) Palmer Drought Severity Index (PDSI) and drip rate; and (5) PDSI and Mg/Ca. These relationships can be explained by the extent to which water flux in the karst overburden influences flow path characteristics, water residence time, and water-rock interactions. The data in Chapter 3 will indicate that (1) variations in trace element/Ca values in cave drip waters are temperature dependent and vary on a seasonal time scale, (2) the standardization of trace element/Ca values allows for between drip site comparisons, (3) the standardization of trace element/Ca values can add statistical power to statistical analyses by increasing the sample size, (4) calcite growth rates follow a seasonal pattern based on variations in surface temperature, (5) a regional drought indicator provides correlation with trace element/Ca values at some drip sites and this relationship is most likely dependent upon temperature. Advisors/Committee Members: Banner, Jay L. (advisor), Sharp, Jr., John M. (committee member), Quinn, Terrence M. (committee member).

Subjects/Keywords: Caves; Drip waters; Trace elements

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APA (6^th Edition):

Casteel, R. C. (2011). The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study. (Masters Thesis). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/ETD-UT-2011-08-4177

Chicago Manual of Style (16^th Edition):

Casteel, Richard Cain. “The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study.” 2011. Masters Thesis, University of Texas – Austin. Accessed January 17, 2021. http://hdl.handle.net/2152/ETD-UT-2011-08-4177.

MLA Handbook (7^th Edition):

Casteel, Richard Cain. “The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study.” 2011. Web. 17 Jan 2021.

Vancouver:

Casteel RC. The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study. [Internet] [Masters thesis]. University of Texas – Austin; 2011. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2152/ETD-UT-2011-08-4177.

Council of Science Editors:

Casteel RC. The modern assessment of climate, calcite growth, and the geochemistry of cave drip waters as a precursor to paleoclimate study. [Masters Thesis]. University of Texas – Austin; 2011. Available from: http://hdl.handle.net/2152/ETD-UT-2011-08-4177

University of Rochester

14. Darrah, Thomas Henry (1981 - ). Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance.

Degree: PhD, 2011, University of Rochester

URL: http://hdl.handle.net/1802/14539

► Research presented in this thesis investigates the trace element, rare earth element, and lead isotope chemistry of cortical and trabecular bone tissues of modern humans.… (more)

▼ Research presented in this thesis investigates the trace element, rare earth element, and lead isotope chemistry of cortical and trabecular bone tissues of modern humans. Samples are of femoral heads discarded following full hip replacement surgeries at the URMC. Chapter 3: Quantification of the existing NIST certified standard reference material for analysis of human bones by inductively coupled plasma mass spectrometry (ICP-MS), for previously unknown quantities of 33 trace elements. Chapter 4: A comparison of trace element concentrations in bone to natural abundance. Relative incorporation of trace elements is shown to be strongly affected by ionic radius and oxidation state. We identify elements affected by metabolic regulation, and non-metabolically regulated elements suitable for geographic provenance studies. Chapter 5: Trace element compositions of a recent immigrant are compared to those of Rochester residents to determine their potential for geographical provenance studies. Biopurification corrected elemental ratios distinguish the immigrant from Rochester residents, reflecting mixing between NMORB, characteristic of previous domicile, and the Rochester UCC-type soils. Chapter 6: Lead isotopic compositions of a recent immigrant are compared to those of Rochester residents to determine the potential for geographical provenance studies. Lead isotopic compositions of Rochester residents cluster similar to Rochester soil and UCC. The immigrant is strongly differentiated from Rochester residents (>5δ from their mean) by lead isotopic compositions of both cortical and trabecular tissues; long term exposure to a lead source distinct from that of Rochester residents is evidenced. Chapter 7: Bone is shown to incorporate anomalously high concentrations of gadolinium (Gd) from the chelated form used in contrast agents for medical imaging (i.e. MRI, MRA), revealing rapid breakdown of medically dosed chelates to toxic free Gd3+ and incorporation into bone tissues. Incorporation and/or retention of Gd differs between osteoarthritis and fracture patients, indicating a bone pathology effect on metal processing. Chapter 8: Potential for trace elements to affect bone health is investigated through comparison of trace element compositions of patients with osteoarthritis and osteoporosis-related fracture. Toxic metals, total metals, and transition metals are all higher in fracture patients, while Ba concentrations are lower.

Subjects/Keywords: Bone; Biominerals; Bone chemistry; Gadolinium; Trace elements

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APA (6^th Edition):

Darrah, T. H. (. -. ). (2011). Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance. (Doctoral Dissertation). University of Rochester. Retrieved from http://hdl.handle.net/1802/14539

Chicago Manual of Style (16^th Edition):

Darrah, Thomas Henry (1981 - ). “Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance.” 2011. Doctoral Dissertation, University of Rochester. Accessed January 17, 2021. http://hdl.handle.net/1802/14539.

MLA Handbook (7^th Edition):

Darrah, Thomas Henry (1981 - ). “Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance.” 2011. Web. 17 Jan 2021.

Vancouver:

Darrah TH(-). Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance. [Internet] [Doctoral dissertation]. University of Rochester; 2011. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1802/14539.

Council of Science Editors:

Darrah TH(-). Inorganic trace element composition of modern human bones : relation to bone pathology and geographical provenance. [Doctoral Dissertation]. University of Rochester; 2011. Available from: http://hdl.handle.net/1802/14539

Oregon State University

15. Flannery, Kelly M. Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity.

Degree: MS, Ocean, Earth, and Atmospheric Sciences, 2015, Oregon State University

URL: http://hdl.handle.net/1957/57253

► Many trace elements (e.g., Zn, Cd, Mo) are essential phytoplankton micronutrients, making them crucial to the marine ecosystem and ultimately the carbon cycle. Because of… (more)

▼ Many trace elements (e.g., Zn, Cd, Mo) are essential phytoplankton micronutrients, making them crucial to the marine ecosystem and ultimately the carbon cycle. Because of this association trace metals are also utilized in paleoceanographic studies (e.g., Mo, Cd). However, not much is known about what controls the cycling of these trace metals in seawater. The primary goal of this study was to improve our understanding Ag, Mo and Cd cycling, focusing on the particulate phase, so that we can understand what influences their delivery to the seafloor. The concentrations of trace metals (i.e., Ag, Mo, and Cd) and minor elements (i.e., Al, Ba, Mn, Zn) were measured in sediment trap samples collected at three sites in the western Arabian Sea; two high productivity nearshore sites (MS2 and MS3) and one oligotrophic gyre site (MS5). The concentrations of these metals were converted to fluxes and compared to four commonly utilized productivity proxies; particulate organic carbon (POC), total barium (Ba), opal, and carbonate (CaCO₃). Particulate Ag flux increases with increasing trap depth at both MS2 and MS3, but decreased with increasing trap depth at MS5. Ag flux also shows a strong positive correlation with particulate organic carbon (POC), as well as opal and Ba. These data suggest that at the high productivity sites, Ag is accumulates in settling, organic-rich particles. There is no evidence that the intense Oxygen Minimum Zone, which characterizes the Arabian Sea, is influencing Ag accumulation. Nor is Ag simply related to the opal flux, refuting the idea that Ag is delivered to the seafloor by diatom frustules. Instead, dissolved Ag concentrations and POC and/or total particle flux are probably the main controls on particulate Ag formation. Particulate Mo flux also positively correlates well with POC flux, suggesting it might be scavenged onto particulate organic matter. There is also evidence of Mo scavenging by Mn oxyhydroxides in the deep trap. Therefore particulate Mo flux to the seafloor seems to be controlled by both POC flux and Mn oxyhydroxide formation. Particulate Cd is organic, despite the fact that Cd and POC fluxes do not correlate particularly well due to the unusual behavior of POC. In summary, all three of the trace metals studied show evidence of a link to organic carbon flux. Particulate Cd and Mo, as well as Ag at MS5, are found within, or possibly absorbed on to, the organic matter. They are cycled with this organic matter and thus their fluxes decrease with water depth. Very little of these metals will make it to the seafloor in deep ocean. Particulate Ag at the high productivity stations (MS2 and MS3) behaves differently. It is scavenged by sinking organic-rich particles and fluxes increase with water depth. Therefore, large amounts of particulate Ag could reach the seafloor, at least in regions characterized by high productivity. Advisors/Committee Members: McKay, Jennifer L. (advisor), Carlson, Anders (committee member).

Subjects/Keywords: Paleoproductivity; Trace elements in water – Arabian Sea

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APA (6^th Edition):

Flannery, K. M. (2015). Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/57253

Chicago Manual of Style (16^th Edition):

Flannery, Kelly M. “Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity.” 2015. Masters Thesis, Oregon State University. Accessed January 17, 2021. http://hdl.handle.net/1957/57253.

MLA Handbook (7^th Edition):

Flannery, Kelly M. “Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity.” 2015. Web. 17 Jan 2021.

Vancouver:

Flannery KM. Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity. [Internet] [Masters thesis]. Oregon State University; 2015. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1957/57253.

Council of Science Editors:

Flannery KM. Particulate Trace Metal Fluxes in the Western Arabian Sea and Their Links to Marine Productivity. [Masters Thesis]. Oregon State University; 2015. Available from: http://hdl.handle.net/1957/57253

University of Tasmania

16. Beckett, JM. Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations.

Degree: 2010, University of Tasmania

URL: https://eprints.utas.edu.au/19291/1/whole_BeckettJeffreyMaxwell2010_thesis.pdf

► Micronutrient deficiency is a public health problem thought to affect a third of the world's population. In Tasmania, selenium deficiency occurred in livestock, and it… (more)

▼ Micronutrient deficiency is a public health problem thought to affect a third of the world's population. In Tasmania, selenium deficiency occurred in livestock, and it has been hypothesised that the human population may be at risk of inadequate intakes. There are few Australian studies of trace element status, and previous studies in Tasmania have been very limited and have provided conflicting results. The primary aim of this thesis was: • To assess the selenium status of people in northern Tasmania; • To identify factors that may influence selenium status in these people; • To determine groups in this population that may be at increased risk of low selenium status. A secondary aim was to conduct an opportunistic study to assess the copper and zinc status in the same population, and determine some of the factors which may be associated with copper and zinc status in this population. The main study was a cross sectional population study of approximately 500 subjects randomly selected from the electoral roll in the northern Tasmania; this was preceeded by a preliminary study which used a convenience sample from this same geographical region, and some technical work on the assessment of copper and zinc status. Indices of trace element status measured included dietary intake, serum levels and functional markers of status, such as glutathione peroxidase activity for selenium status. This was linked with data on lifestyle habits, anthropometric measurements, dietary analysis for other nutrients, and the measurement of total antioxidant status and lipid profiles. Results from the preliminary research (n = 198) suggested that marginal selenium status may be reasonably widespread in this population, and that certain gender/age groups may also consume inadequate zinc. Hereditary haemochromatosis was not observed to have a major effect on trace element status. The population study on 498 subjects from the electoral rolls of north, north west and north eastern Tasmania, suggested a high prevalence of marginal selenium status. Northern Tasmanians had mean selenium intakes of 77.4 and 65.1 ug/d for men and women respectively; with 27% of all subjects consuming inadequate amounts of selenium as indicated by NH&MRC guidelines on dietary intakes. Mean serum selenium was 1.13 umol/L; and hence a large proportion of the population (80%) was estimated to have serum selenium concentrations below threshold levels associated with selenoprotein requirements. The majority of subjects also had serum selenium concentrations below the level suggested to offer chemopreventative benefits for some cancers. Associations with a common selenoprotein SNP were not found. In investigations of zinc status, men in particular appeared at risk of inadequacy. Zinc intakes were 12.6 and 10.9 mg/d for men and women respectively. Fifty two percent of men consumed inadequate zinc compared to only 9% of women. Mean serum zinc concentration was 13.0 umol/L and when compared to the WHO cut-off, 15% of all men had low serum…

Subjects/Keywords: Trace elements; Selenium in human nutrition

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APA (6^th Edition):

Beckett, J. (2010). Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/19291/1/whole_BeckettJeffreyMaxwell2010_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Beckett, JM. “Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations.” 2010. Thesis, University of Tasmania. Accessed January 17, 2021. https://eprints.utas.edu.au/19291/1/whole_BeckettJeffreyMaxwell2010_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Beckett, JM. “Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations.” 2010. Web. 17 Jan 2021.

Vancouver:

Beckett J. Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations. [Internet] [Thesis]. University of Tasmania; 2010. [cited 2021 Jan 17]. Available from: https://eprints.utas.edu.au/19291/1/whole_BeckettJeffreyMaxwell2010_thesis.pdf.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Beckett J. Selenium, zinc and copper status in Tasmania : dietary, lifestyle and some genetic associations. [Thesis]. University of Tasmania; 2010. Available from: https://eprints.utas.edu.au/19291/1/whole_BeckettJeffreyMaxwell2010_thesis.pdf

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

17. Lewis, David John. Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch.

Degree: MS, Geology, 2015, Texas A&M University

URL: http://hdl.handle.net/1969.1/156400

► During the Middle to Late Ordovician, Laurentia was situated over the equator and the Transcontinental Arch, and its exposed basement rock and sedimentary cover straddled… (more)

Subjects/Keywords: zircon; trace elements; laser ablation; sediment provenance

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APA (6^th Edition):

Lewis, D. J. (2015). Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/156400

Chicago Manual of Style (16^th Edition):

Lewis, David John. “Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch.” 2015. Masters Thesis, Texas A&M University. Accessed January 17, 2021. http://hdl.handle.net/1969.1/156400.

MLA Handbook (7^th Edition):

Lewis, David John. “Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch.” 2015. Web. 17 Jan 2021.

Vancouver:

Lewis DJ. Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch. [Internet] [Masters thesis]. Texas A&M University; 2015. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1969.1/156400.

Council of Science Editors:

Lewis DJ. Detrital Zircon Trace Element Characterization of Middle to Late Ordovician Quartz Arenites along the Transcontinental Arch. [Masters Thesis]. Texas A&M University; 2015. Available from: http://hdl.handle.net/1969.1/156400

University of Nairobi

18. Nguta, JM. Determination of levels of trace elements in pastures in some regions in Kenya .

Degree: 2007, University of Nairobi

URL: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/13915

► Trace elements are needed by ruminant animals for physiological and biochemical processes. The trace elements at optimum levels make animals to maintain desired production performance… (more)

▼ Trace elements are needed by ruminant animals for physiological and biochemical processes. The trace elements at optimum levels make animals to maintain desired production performance parameters. Excesses of some of these trace elements can also lead to toxicosis. The important trace elements are copper, cobalt, zinc and selenium. The present study was conducted to determine levels of copper, cobalt, zinc, and selenium in known pasture grasses from eight regions of Kenya; to establish whether the named trace elements are deficient or in toxic quantities; to relate the trace element levels from the pasture grasses from different regions of Kenya with known recommended values in mg/kg of dry matter (mg/kg of DM) for optimum livestock production, and finally to recommend any intervention measures. Forage samples (n = 171) were collected from eight regions in Kenya during months of July and August 2005. These regions were: Coast province, Machakos district, Nairobi province, Kiambu district, Mount Kenya region, Nakuru district, Eldoret region and Homabay district. The pasture grasses collected were: kikuyu grass, napier grass, red oats grass, star grass, sweet pitted grass, common setaria, brown hood grass and sudan grass. The samples were then transported to the laboratory. The grass samples (20 grams) were chopped into one-centimetre pieces and oven dried for 48 hours at 600C. They were then ground using Willey mill no. 20 stainless steel sieve and allowed to equilibrate with the atmospheric pressure for 12 hours and mixed properly pending assay for trace elements. Nine validation assay techniques were conducted, correlation coefficients determined, and the technique that gave the highest positive correlation, (R2) value of 0.997, with a regression equation of, Y=0.046 + 0.021X, was adopted in the isolation and quantification of trace ents from the sample matrix. A linear regression curve was fitted for the technique. Constituent trace elements (Co, Cu, Zn, and Se) were separated from the organic matrix using wet oxidation, with the digestion chemicals being nitric acid and perchloric acid at the ratio of 3:1 respectively. The trace elements were assessed using Perkin-Elmer model 2380 flame atomic absorption spectrophotometer at the following wavelengths: 327.4 nm, 240.7 nm, 213.9 nm, and 196.0 nm for copper, cobalt, zinc, and selenium respectively. Mean (mg/kg of DM) ± SD national values for zinc, copper, selenium and cobalt were 44.1 ± 20.5, 4.2 ± 1.6, < 0 and 4.4 ± 6.3 respectively. These values were found to be below the nutritional requirements for optimum livestock production for copper, zinc and selenium and suggestive of a deficiency, while fifty percent (50%) of all the regions investigated had cobalt levels that were observed to be below the normal recommended values for optimum livestock production, and were found to be deficient of the trace element. Deficiency was shown in 68% of pastures for copper, 62% of pastures for zinc, in 61% of pastures for cobalt and in 42% of…

Subjects/Keywords: Trace Elements; Pastures

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APA (6^th Edition):

Nguta, J. (2007). Determination of levels of trace elements in pastures in some regions in Kenya . (Thesis). University of Nairobi. Retrieved from http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/13915

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nguta, JM. “Determination of levels of trace elements in pastures in some regions in Kenya .” 2007. Thesis, University of Nairobi. Accessed January 17, 2021. http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/13915.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nguta, JM. “Determination of levels of trace elements in pastures in some regions in Kenya .” 2007. Web. 17 Jan 2021.

Vancouver:

Nguta J. Determination of levels of trace elements in pastures in some regions in Kenya . [Internet] [Thesis]. University of Nairobi; 2007. [cited 2021 Jan 17]. Available from: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/13915.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nguta J. Determination of levels of trace elements in pastures in some regions in Kenya . [Thesis]. University of Nairobi; 2007. Available from: http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/13915

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Univerzitet u Beogradu

19. Tulić, Lidija, 1978- 30651495. Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja.

Degree: Medicinski fakultet, 2020, Univerzitet u Beogradu

URL: https://fedorabg.bg.ac.rs/fedora/get/o:20805/bdef:Content/get

►

Ginekologija i akušerstvo - Humana reprodukcija / Gynecology and Obstetrics - Human Reproduction

Uvod: Oksidativni stres dešava se usled neuravnoteženog odnosa pro-oksidanata i antioksidanata u… (more)

▼

Ginekologija i akušerstvo - Humana reprodukcija / Gynecology and Obstetrics - Human Reproduction

Uvod: Oksidativni stres dešava se usled neuravnoteženog odnosa pro-oksidanata i antioksidanata u prilog poslednjih. Odnos može biti poremećen zbog povećane koncentracije reaktivnih kiseoničnih vrsta (ROS) i/ili umanjene antioksidativne odbrane. Normalne fiziološke funkcije, uključujući proces signalizacije ćelija, proliferacije i diferencijacije, zavise od prisustva određenih koncentracija ROS. U reproduktivnom traktu, fiziološki nivoi ROS neophodni su ne samo za ovulaciju, već i za interakciju oocita-spermatozoid, fertilizaciju, implantaciju i rani razvoj embriona. Ipak, povećana produkcija ROS može da ošteti prirodnu antioksidativnu odbranu organizma, remeteći mikrosredinu u reproduktivnom traktu i normalne fiziološke reakcije. Razumevanje uloge ROS u ženskom infertilitetu i dalje je nepotpuno. Činjenica da su oksidativni i antioksidativni sistem prisutni u različitim ženskim reproduktivnim tkivima sugeriše da infertilitet i određenja reproduktivna oboljenja mogu biti uzrokovana, makar delimično, oksidativnim stresom. Već godinama se sve više smatra da oksidativni stres (OS) ima negativan uticaj na reproduktivne sposbnosti i muškaraca i žena. Doprinos OS patogenezi infertiliteta sve se obimnije ispituje u oblasti muškog infertiliteta, posebno u pogledu uticaja na različite aspekte kvaliteta spermatozoida. Cilj: Ciljevi ove studije bili su da se kod pacijenata uključenih u postupak VTO ispita uticaj različitih protokola kontrolisane ovarijalne stimulacije (KOS), doze gonadotropina, promene koncetracija parametara OS pre stimulacije i posle stimulacije na ishod IVF postupka. Takođe smo ispitivali povezanost promene koncentracije parametara oksidativnog stresa, poremećaja ravnoteže bioelemenata i uticaj toksičnih metala kod žena na ishod IVF postupka kod žena, dok smo kod muških partnera ispitivali povezanosti promene koncentracija parametara oksidativnog stresa, poremećaja ravnoteže bioelemenata i uticaj toksičnih metala sa parametrima spermograma i ispitivali uticaj parametara spermograma na ishod postupka...

Advisors/Committee Members: Vidaković, Snežana, 1960- 12562279.

Subjects/Keywords: oxidative stress; trace elements; toxic metals; IVF

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Tulić, Lidija, 1. 3. (2020). Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja. (Thesis). Univerzitet u Beogradu. Retrieved from https://fedorabg.bg.ac.rs/fedora/get/o:20805/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Tulić, Lidija, 1978- 30651495. “Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja.” 2020. Thesis, Univerzitet u Beogradu. Accessed January 17, 2021. https://fedorabg.bg.ac.rs/fedora/get/o:20805/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Tulić, Lidija, 1978- 30651495. “Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja.” 2020. Web. 17 Jan 2021.

Vancouver:

Tulić, Lidija 13. Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja. [Internet] [Thesis]. Univerzitet u Beogradu; 2020. [cited 2021 Jan 17]. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20805/bdef:Content/get.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Tulić, Lidija 13. Oksidativni stres i ravnoteža bioelemenata kod pacijentkinja u postupku vantelesnog oplođenja. [Thesis]. Univerzitet u Beogradu; 2020. Available from: https://fedorabg.bg.ac.rs/fedora/get/o:20805/bdef:Content/get

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

20. Kurmis, Rochelle. The effectiveness of trace element supplementation following severe burn injury: a systematic review.

Degree: 2015, University of Adelaide

URL: http://hdl.handle.net/2440/99093

► Trace elements have an important physiological role following severe burn injury with patients routinely receiving supplementation. Although trace element supplementation is commonly prescribed after burn… (more)

▼ Trace elements have an important physiological role following severe burn injury with patients routinely receiving supplementation. Although trace element supplementation is commonly prescribed after burn injury, variations exist between supplement composition, frequency and the dosage administered. This objective of this research was to identify, assess and synthesise the available evidence on the effectiveness of trace element supplementation on clinically meaningful outcomes, including mortality, length of stay, rate of wound healing and complications in patients who have sustained a severe burn injury. Following development of an a priori protocol, the effectiveness of selenium, copper and zinc supplementation, either alone or combined, compared to placebo or standard treatment, was investigated via systematic review and meta-analysis. A comprehensive search strategy was designed and employed to identify published and unpublished research. Methodological quality of eligible studies was critically appraised and relevant data extracted for synthesis. Eight studies were included in the review: four randomised controlled trials and four nonrandomised experimental trials, representing 398 participants with an age range of six to 67 years. Results of this research indicate that the use of parentally-administered combined trace elements following burn injury confers positive effects in decreasing infectious complications. Combined parenteral trace element supplementation and combined oral and parenteral zinc supplementation have potentially clinically significant implications on reducing length of stay. Oral zinc supplementation shows possible beneficial effects on mortality. Further studies are required to accurately define optimal trace element supplementation regimens, dosages and routes, and to determine cost-effectiveness. Advisors/Committee Members: Aromataris, Edoardo Claudio (advisor), Greenwood, John Edward (advisor), School of Translational Health Science (school).

Subjects/Keywords: burn injury; trace elements; nutrition support

1 more image…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kurmis, R. (2015). The effectiveness of trace element supplementation following severe burn injury: a systematic review. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/99093

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kurmis, Rochelle. “The effectiveness of trace element supplementation following severe burn injury: a systematic review.” 2015. Thesis, University of Adelaide. Accessed January 17, 2021. http://hdl.handle.net/2440/99093.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kurmis, Rochelle. “The effectiveness of trace element supplementation following severe burn injury: a systematic review.” 2015. Web. 17 Jan 2021.

Vancouver:

Kurmis R. The effectiveness of trace element supplementation following severe burn injury: a systematic review. [Internet] [Thesis]. University of Adelaide; 2015. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2440/99093.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kurmis R. The effectiveness of trace element supplementation following severe burn injury: a systematic review. [Thesis]. University of Adelaide; 2015. Available from: http://hdl.handle.net/2440/99093

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Surrey

21. Adair, Jill. Trace element and selenium speciation analysis of human body fluids by ICP-MS.

Degree: PhD, 2002, University of Surrey

URL: http://epubs.surrey.ac.uk/843747/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248076

► Analytical methods were developed and validated for the determination of the total concentration of trace elements (Se, Fe, Cu, Zn, Mg, Ca, Mn, Mo, I,… (more)

▼ Analytical methods were developed and validated for the determination of the total concentration of trace elements (Se, Fe, Cu, Zn, Mg, Ca, Mn, Mo, I, Cd and Pb) and the various organic and inorganic selenium species present in human body fluids. Total elemental analysis involved the use of inductively coupled plasma mass spectrometry (ICP-MS). Speciation analysis utilised ion-pair high performance liquid chromatography (HPLC) coupled on-line to a hexapole collision cell ICP-MS. The methods that were developed were then applied to three separate studies. The effect of psychological stress on human fertility was determined by comparing the trace element levels in blood serum from 47 infertile women undergoing in-vitro fertilisation (IVF) treatment. Elemental data was compared with stress-hormone (plasma prolactin and serum cortisol) levels and Spielberger stress questionnaires. Statistical analysis showed no relationship between stress-hormones and blood serum trace element levels and that stress-hormones do not have an adverse effect on human fertility. A further study examined the total trace element levels of blood serum, follicular fluid, endometrial fluid and scalp hair from a study population of 97 women aged between 24 - 44 years undergoing IVF treatment. Selenium levels in blood serum were significantly lower in IVF patients in contrast to 18 (age and gender matched) control cases (P = 0.001, 35 degrees of freedom). This was in agreement with a previous study with infertile women, aged < 35 years. Zinc and manganese were determined in endometrial fluid, both showing a high degree of correlation (P = 0.001, 17 degrees of freedom) in the IVF population (no control samples were available for analysis). The levels of each element measured in scalp hair showed no correlation with the levels determined in any other matrix. A major contribution of this research involved speciation analysis of selenium in blood serum, seminal plasma and urine. Commercial selenium supplements were consumed over 28 days and the effect that this had on selenium levels (total and species) within the human body fluids was investigated. Consumption caused an increase in the levels of selenium within all human body fluids and in general, the total level of selenium was found to be higher than the sum of the species present. An in-vitro bioavailability procedure was performed on the supplements and showed that two selenium yeast commercial products contained different selenium species. Some selenium species were identified and the implications of this are discussed.

Subjects/Keywords: 612; Trace elements

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Adair, J. (2002). Trace element and selenium speciation analysis of human body fluids by ICP-MS. (Doctoral Dissertation). University of Surrey. Retrieved from http://epubs.surrey.ac.uk/843747/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248076

Chicago Manual of Style (16^th Edition):

Adair, Jill. “Trace element and selenium speciation analysis of human body fluids by ICP-MS.” 2002. Doctoral Dissertation, University of Surrey. Accessed January 17, 2021. http://epubs.surrey.ac.uk/843747/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248076.

MLA Handbook (7^th Edition):

Adair, Jill. “Trace element and selenium speciation analysis of human body fluids by ICP-MS.” 2002. Web. 17 Jan 2021.

Vancouver:

Adair J. Trace element and selenium speciation analysis of human body fluids by ICP-MS. [Internet] [Doctoral dissertation]. University of Surrey; 2002. [cited 2021 Jan 17]. Available from: http://epubs.surrey.ac.uk/843747/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248076.

Council of Science Editors:

Adair J. Trace element and selenium speciation analysis of human body fluids by ICP-MS. [Doctoral Dissertation]. University of Surrey; 2002. Available from: http://epubs.surrey.ac.uk/843747/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.248076

University of Edinburgh

22. de Grouchy, Charlotte J. L. Trace element incorporation in silicate melts and glasses at high pressure.

Degree: PhD, 2017, University of Edinburgh

URL: http://hdl.handle.net/1842/22848

► Trace elements are highly fractionated during large-scale melting associated with planetary differentiation events. The resulting partition coefficients are used to constrain a range of geological… (more)

▼ Trace elements are highly fractionated during large-scale melting associated with planetary differentiation events. The resulting partition coefficients are used to constrain a range of geological processes and are known to be influenced by pressure, temperature, and compositional changes in crystalline structures. Although recent studies have shown that melt compositional changes affect the partitioning of trace elements, the degree to which these ratios are influenced by alterations in the melt structure, especially with increasing pressure, is poorly constrained due to the difficulty of collecting structural information on bonding environments in situ. A basic understanding of how these elements are incorporated in silicate melts is critical to interpreting early planetary differentiation and crust forming events. This thesis presents results from both x-ray diffraction and absorption techniques on trace element (Y, Zr, Lu and Nd) incorporation in silicate melt structures. The structure of two rare Earth element doped model end member silicate liquids, a highly polymerised haplogranite (Si- Al-Na-K-O) and a less polymerised anorthite-diopside (Si-Al-Mg-Ca-O), have been studied. The results are the first to identify trace rare Earth element (REE) incorporation in silicate melts at high pressure using x-ray diffraction techniques. The local melt structure around Y and Zr in a highly polymerised haplogranite has been studied using x-ray absorption spectroscopy up to 8GPa and 1650 K. Both elements appear to adopt 8-fold coordination within the melt structure with no variation over the pressure range studied. This was also found for the Lu bonding environment in the same composition where the coordination number of Lu-O was found to be 8, with a bond distance rLu-O = 2:36A in the haplogranite melt. At low pressures, < 5GPa, the bonding environment of Lu-O was found to be dependent on composition with coordination decreasing to CNLu-O = 6 and rLu-O = 2:29A in the anorthite-diopside melt. This compositional variance in coordination number at low pressure is consistent with observations made for Y-O in glasses at ambient conditions and is coincident with a dramatic increase in the partition coefficients previously observed for rare Earth elements (REE) with increasing melt polymerisation. However, an abrupt change in both Lu-O coordination and bond distance is observed at 5GPa in the anorthite-diopside melt, with CNLu-O increasing from 6 to 8-fold and rLu-O from 2.29 to 2.39A. This occurs over a similar pressure range where a reduction in the reported heavy REE partition coefficients is observed. X-ray diffraction experiments up to 60GPa and 2000K have also been performed on the incorporation of the larger light REE, Nd, in basaltic-like melts. The results presented show that incorporation within the anorthite-diopside composition is dependent on the size of the REE. Nd-O initially shows the same 6-fold coordination as Lu-O at ambient conditions, although the change to 8-fold coordination appears to occur at considerably…

Subjects/Keywords: 551.9; silicate melts; high pressure; trace elements

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

de Grouchy, C. J. L. (2017). Trace element incorporation in silicate melts and glasses at high pressure. (Doctoral Dissertation). University of Edinburgh. Retrieved from http://hdl.handle.net/1842/22848

Chicago Manual of Style (16^th Edition):

de Grouchy, Charlotte J L. “Trace element incorporation in silicate melts and glasses at high pressure.” 2017. Doctoral Dissertation, University of Edinburgh. Accessed January 17, 2021. http://hdl.handle.net/1842/22848.

MLA Handbook (7^th Edition):

de Grouchy, Charlotte J L. “Trace element incorporation in silicate melts and glasses at high pressure.” 2017. Web. 17 Jan 2021.

Vancouver:

de Grouchy CJL. Trace element incorporation in silicate melts and glasses at high pressure. [Internet] [Doctoral dissertation]. University of Edinburgh; 2017. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1842/22848.

Council of Science Editors:

de Grouchy CJL. Trace element incorporation in silicate melts and glasses at high pressure. [Doctoral Dissertation]. University of Edinburgh; 2017. Available from: http://hdl.handle.net/1842/22848

Hong Kong University of Science and Technology

23. Wang, Wenhao. Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts.

Degree: 2016, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-87399 ; https://doi.org/10.14711/thesis-b1627034 ; http://repository.ust.hk/ir/bitstream/1783.1-87399/1/th_redirect.html

► Severe metal pollution due to industrial effluent releases has been documented in Jiulong River estuary which locates in Fujian Province, southern China. In the present… (more)

▼ Severe metal pollution due to industrial effluent releases has been documented in Jiulong River estuary which locates in Fujian Province, southern China. In the present study, time-series based water samplings were conducted during effluent discharge events to reveal the metal partitioning in the dissolved, particulate and colloidal phases. Different behaviors of metals in the dissolved fraction against salinity indicated different sources. Enhanced adsorption as well as formation of particulates resulted in elevated partitioning for Cu and Zn during the mixing process. Colloidal metals displayed positive correlations with dissolved or colloidal organic carbon, while constant colloidal partitioning suggested the excess binding capacity. Diffusive gradient in thin films (DGT) technique was then employed together with sediment cores to study the porewater dynamics of trace metals as well as benthic exchange fluxes. With the redox condition showing spatial and temporal variations, precipitation as sulfides and adsorption onto Mn/Fe (hydr)oxides were important in scavenging metals from porewaters in this estuarine area. Estimated fluxes at sediment-water interface indicated the overlying water as a major source for trace metals, whereas sediment could also be the source if surface remobilization dominated. In addition, taking advantage of flow field-flow fractionation (FlFFF) technique, colloidal size distribution of organic matter and metals was quantified. A dominance of dissolved metals in the 1-10 kDa fraction was demonstrated, which was regulated by terrestrial fulvic acid input. The small sized colloidal organic complexes were responsible for stabilizing trace metals. And variations in particle size fractions indicated different sources, fates and geochemical controls of the metals. Our results highlighted the impacts of both natural and anthropogenic processes on trace metal behaviors in the dynamic system. Results from these studies will further provide information on metal toxicity prediction, environmental impact assessment and pollution mitigation.

Subjects/Keywords: Estuarine pollution ; Environmental aspects ; Trace elements ; Biogeochemistry

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APA (6^th Edition):

Wang, W. (2016). Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-87399 ; https://doi.org/10.14711/thesis-b1627034 ; http://repository.ust.hk/ir/bitstream/1783.1-87399/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wang, Wenhao. “Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts.” 2016. Thesis, Hong Kong University of Science and Technology. Accessed January 17, 2021. http://repository.ust.hk/ir/Record/1783.1-87399 ; https://doi.org/10.14711/thesis-b1627034 ; http://repository.ust.hk/ir/bitstream/1783.1-87399/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wang, Wenhao. “Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts.” 2016. Web. 17 Jan 2021.

Vancouver:

Wang W. Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2016. [cited 2021 Jan 17]. Available from: http://repository.ust.hk/ir/Record/1783.1-87399 ; https://doi.org/10.14711/thesis-b1627034 ; http://repository.ust.hk/ir/bitstream/1783.1-87399/1/th_redirect.html.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wang W. Geochemical behavior of trace metals in a contaminated estuary : phase partitioning, porewater dynamics and anthropogenic impacts. [Thesis]. Hong Kong University of Science and Technology; 2016. Available from: http://repository.ust.hk/ir/Record/1783.1-87399 ; https://doi.org/10.14711/thesis-b1627034 ; http://repository.ust.hk/ir/bitstream/1783.1-87399/1/th_redirect.html

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

24. Alves Vas, Francisco Javier. Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo .

Degree: 2013, Universidad de Extremadura

URL: http://hdl.handle.net/10662/794

► El entrenamiento aeróbico realizado por atletas de alto nivel, con alto volumen de entrenamiento y significativa intensidad, puede llegar a producir importantes cambios en parámetros… (more)

▼ El entrenamiento aeróbico realizado por atletas de alto nivel, con alto volumen de entrenamiento y significativa intensidad, puede llegar a producir importantes cambios en parámetros antropométricos y adaptaciones fisiológicas en el organismo. Los minerales traza son nutrientes esenciales que tienen gran importancia en múltiples funciones fisiológicas, aunque algunos de ellos, pueden ser tóxicos en los humanos. En la actualidad son elementos poco estudiados debido a los problemas metodológicos que plantea su determinación. Contamos con la participación de 16 atletas extremeños de alto nivel, que nos permite valorar los efectos de 6 meses de entrenamiento sobre distintos parámetros y variables relacionados con el rendimiento y la salud de los atletas. Se determinan las modificaciones que se producen en las concentraciones séricas así como en los niveles de eliminación urinaria de minerales traza en estos atletas. Para su análisis se ha utilizado la espectrometría de masas con plasma de acoplamiento inductivo (ICP-MS). Los resultados pueden ser interesantes para la planificación de suplementos que puedan paliar los posibles déficits producidos por el esfuerzo intenso a lo largo de un periodo de entrenamiento. La respuesta cardiorrespiratoria no ha sufrido cambios a lo largo del estudio. En relación al estrés oxidativo, no se producen cambios en el marcador de peroxidación lipídica (MDA) y los antioxidantes no enzimáticos (vitaminas A, C y E) tienden a aumentar. A nivel hormonal, se observa un aumento de las hormonas anabólicas testosterona y hormona luteinizante (LH), mientras que en la insulina y el cortisol no se producen cambios significativos. En cuanto a los minerales, entre los resultados más representativos, se observan descensos en las concentraciones séricas de minerales trazas esenciales como el selenio y vanadio, que hay que tener en cuenta a la hora de establecer posibles suplementaciones. Mientras que el zinc, sufrió un incremento en sus valores séricos que puede ser de gran interés para el deportista. Además, se produjo el descenso en la eliminación urinaria de cobre y selenio, que puede ser una adaptación renal en los deportistas para evitar perder estos elementos esenciales; y el aumento en la eliminación renal de cadmio y plomo, que podríamos entenderlo como un proceso adaptativo de los atletas para favorecer la eliminación de estos elementos tóxicos. Advisors/Committee Members: Maynar Mariño, Marcos Antonio (advisor), Llerena Ruíz, Francisco (advisor), Crespo Coco, Carmen (advisor).

Subjects/Keywords: Atletas; Elementos traza; Athletes; Trace elements

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Alves Vas, F. J. (2013). Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo . (Thesis). Universidad de Extremadura. Retrieved from http://hdl.handle.net/10662/794

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Alves Vas, Francisco Javier. “Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo .” 2013. Thesis, Universidad de Extremadura. Accessed January 17, 2021. http://hdl.handle.net/10662/794.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Alves Vas, Francisco Javier. “Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo .” 2013. Web. 17 Jan 2021.

Vancouver:

Alves Vas FJ. Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo . [Internet] [Thesis]. Universidad de Extremadura; 2013. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/10662/794.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Alves Vas FJ. Cambios en los niveles de minerales en suero y orina a lo largo de una temporada en atletas extremeños de alto nivel de fondo y mediofondo . [Thesis]. Universidad de Extremadura; 2013. Available from: http://hdl.handle.net/10662/794

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

25. Sugden, John Charles. An exploration for truth in soil parent materials in Hyalite Canyon, Montana.

Degree: MS, College of Agriculture, 2015, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/9374

► Forested mountain soils are mapped and researched at coarser scales than agricultural areas. Additionally existing mass balance approaches have only recently begun to quantify soil… (more)

▼ Forested mountain soils are mapped and researched at coarser scales than agricultural areas. Additionally existing mass balance approaches have only recently begun to quantify soil chemical weathering referenced to two parent materials. Forests occupy soils on gneiss, sandstone, shale, limestone, and basaltic andesite in a lithosequence. Differences in the trace chemistry of immobile elements and their ratios were used to determine the influence of underlying bedrock and other parent materials on soils in southwest Montana. Differences between soils and underlying rock and soils and other candidate parent materials were used to determine the relative influence of both parent materials on each soil horizon. A conventional mass balance approach quantified total and elemental chemical weathering for both parent materials. The relative influences, as informed by trace elements and ratios, were used to scale mass fluxes from each parent material into a hybrid mass flux. We characterized one soil pit per lithology, sampled soil horizons, rock type, and collected five samples regionally as deposited loess. Rock samples (as underlying rock and colluvium as appropriate) and atmospheric deposition were considered candidate parent materials to these soils. Samples were analyzed for major and trace elements. The trace elements or ratios used determined the relative influence of underlying rock versus a second parent material. We developed a methods to assess the immobility of specific elements relative to underlying rock. Ratios deemed most immobile were used to determine fractional influences of rock and a second parent material. Most soils had stronger rock influence at depth and stronger influences of atmospheric deposition at the surface, except for soil on sandstone and basaltic andesite. Regardless, accounting for additions of parent materials aside from underlying rock reduced total mass losses in all soils. The biggest mass loss reductions occurred (~50%) in soils on shale and gneiss, whereas mass loss reductions in soil on basaltic were more modest (~15%) when accounting for atmospheric deposition as a second parent material. Advisors/Committee Members: Chairperson, Graduate Committee: Anthony Hartshorn (advisor), A.S. Hartshorn, J.L. Dixon and C. Montagne were co-authors of the article, 'A slice through time: a Hyalite Canyon lithosequence' in the journal 'Exploring the Northern Rocky Mountains: Geological Society of America Field Guide' which is contained within this thesis. (other), S.A. Ewing and A.S. Hartshorn were co-authors of the article, 'Trace element fingerprinting of parent material inputs across a soil lithosequence' submitted to the journal 'Geoderma' which is contained within this thesis. (other).

Subjects/Keywords: Soils.; Weathering.; Trace elements.; Soil surveys.

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APA (6^th Edition):

Sugden, J. C. (2015). An exploration for truth in soil parent materials in Hyalite Canyon, Montana. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/9374

Chicago Manual of Style (16^th Edition):

Sugden, John Charles. “An exploration for truth in soil parent materials in Hyalite Canyon, Montana.” 2015. Masters Thesis, Montana State University. Accessed January 17, 2021. https://scholarworks.montana.edu/xmlui/handle/1/9374.

MLA Handbook (7^th Edition):

Sugden, John Charles. “An exploration for truth in soil parent materials in Hyalite Canyon, Montana.” 2015. Web. 17 Jan 2021.

Vancouver:

Sugden JC. An exploration for truth in soil parent materials in Hyalite Canyon, Montana. [Internet] [Masters thesis]. Montana State University; 2015. [cited 2021 Jan 17]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9374.

Council of Science Editors:

Sugden JC. An exploration for truth in soil parent materials in Hyalite Canyon, Montana. [Masters Thesis]. Montana State University; 2015. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9374

University of Illinois – Urbana-Champaign

26. Oh, Kyuhak. Optimization of detector response simulations for multiple particles created by neutron-induced reactions.

Degree: PhD, Nuclear, Plasma, Radiolgc Engr, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/95462

► This research introduces the design of the optimized Pulsed Neutron Facility (PNF), which consists of a D-T neutron generator, a fueled graphite monolith, and a… (more)

▼ This research introduces the design of the optimized Pulsed Neutron Facility (PNF), which consists of a D-T neutron generator, a fueled graphite monolith, and a detection system, and studies the optimization of detector response simulations for multiple particles created by neutron-induced reactions. Neutron Activation Analysis (NAA) method was used to investigate the inﬂuence of the trace element, chlorine, in the biological system of the human body using the Monte Carlo simulation toolkits. Even though one of trace elements, chlorine, has a strong signal of the characteristic γ-rays by neutron capture reactions, it never has been used for in vivo detection of the cancer, previously. In this research, the possibility to detect some cancers by using the chlorine was discovered by comparing the concentration of the chlorine between normal and cancerous tissues. Based on the MCNPX simulations, the initial research focused on optimizing the yield of thermal neutrons in the PNF system, which can then be used as a source for the interactions with the biological sample while minimizing the background radiations. Moderating layer materials and fuel conﬁgurations of the graphite monolith, and the shielding conﬁgurations of the detection system were considered for the optimization. Through the GATE simulations, the detector responses by multiple particle interactions with biological sample were studied for the optimized concentration sensitivity of the chlorine between the normal and cancerous tissues considering various detector types, and thicknesses as well as diﬀerent shielding conﬁgurations of the detection system. γ-ray spectra were analyzed, energy depositions by individual particle were calculated, and the normalized count ratio was deﬁned for determining the optimized sensitivity of the chlorine isotope between normal and cancerous tissues. Three detector materials were considered: HPGe, CdTe, and NaI. At the peak of 8.58 MeV, the NaI detector has a better sensitivity of the chlorine than the other two detectors. Even though the HPGe detector has the best resolution, it has the worst sensitivity. Using the Monte Carlo simulation toolkits, the optimized PNF and detection system were proposed as a novel concept for strengthening the sensitivity of the characteristic γ-rays by neutron-material interactions. Advisors/Committee Members: Heuser, Brent J. (advisor), Heuser, Brent J. (Committee Chair), Uddin , Rizwan (committee member), Meng , Ling-Jian (committee member), Nie, Linda H. (committee member).

Subjects/Keywords: Nuclear detector; Optimization; Particle interaction; Trace elements

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APA (6^th Edition):

Oh, K. (2016). Optimization of detector response simulations for multiple particles created by neutron-induced reactions. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/95462

Chicago Manual of Style (16^th Edition):

Oh, Kyuhak. “Optimization of detector response simulations for multiple particles created by neutron-induced reactions.” 2016. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 17, 2021. http://hdl.handle.net/2142/95462.

MLA Handbook (7^th Edition):

Oh, Kyuhak. “Optimization of detector response simulations for multiple particles created by neutron-induced reactions.” 2016. Web. 17 Jan 2021.

Vancouver:

Oh K. Optimization of detector response simulations for multiple particles created by neutron-induced reactions. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2142/95462.

Council of Science Editors:

Oh K. Optimization of detector response simulations for multiple particles created by neutron-induced reactions. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/95462

Texas Tech University

27. Cayce, Powers William. The use of trace elements in correlating Rhyolitic lava flows.

Degree: Geology, 1963, Texas Tech University

URL: http://hdl.handle.net/2346/12292

► Trace elements in the feldspar pheocrysts from 12 layers of extrusive rhyolite and trachyte located in the central and north portions of the Davis Mountains,… (more)

Subjects/Keywords: Rhyolite; Trace elements

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APA (6^th Edition):

Cayce, P. W. (1963). The use of trace elements in correlating Rhyolitic lava flows. (Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/12292

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Cayce, Powers William. “The use of trace elements in correlating Rhyolitic lava flows.” 1963. Thesis, Texas Tech University. Accessed January 17, 2021. http://hdl.handle.net/2346/12292.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Cayce, Powers William. “The use of trace elements in correlating Rhyolitic lava flows.” 1963. Web. 17 Jan 2021.

Vancouver:

Cayce PW. The use of trace elements in correlating Rhyolitic lava flows. [Internet] [Thesis]. Texas Tech University; 1963. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2346/12292.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Cayce PW. The use of trace elements in correlating Rhyolitic lava flows. [Thesis]. Texas Tech University; 1963. Available from: http://hdl.handle.net/2346/12292

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

28. Hornstein, J. Virgil (Julius Virgil). New methods for improving sensitivity in trace analysis.

Degree: PhD, Chemistry, 1978, Georgia Tech

URL: http://hdl.handle.net/1853/29846

Subjects/Keywords: Trace elements Analysis

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APA (6^th Edition):

Hornstein, J. V. (. V. (1978). New methods for improving sensitivity in trace analysis. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/29846

Chicago Manual of Style (16^th Edition):

Hornstein, J Virgil (Julius Virgil). “New methods for improving sensitivity in trace analysis.” 1978. Doctoral Dissertation, Georgia Tech. Accessed January 17, 2021. http://hdl.handle.net/1853/29846.

MLA Handbook (7^th Edition):

Hornstein, J Virgil (Julius Virgil). “New methods for improving sensitivity in trace analysis.” 1978. Web. 17 Jan 2021.

Vancouver:

Hornstein JV(V. New methods for improving sensitivity in trace analysis. [Internet] [Doctoral dissertation]. Georgia Tech; 1978. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1853/29846.

Council of Science Editors:

Hornstein JV(V. New methods for improving sensitivity in trace analysis. [Doctoral Dissertation]. Georgia Tech; 1978. Available from: http://hdl.handle.net/1853/29846

Georgia Tech

29. Myers, Gary Lee. Investigations in the field of trace analysis.

Degree: PhD, Chemistry, 1975, Georgia Tech

URL: http://hdl.handle.net/1853/30068

Subjects/Keywords: Trace elements Analysis

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APA (6^th Edition):

Myers, G. L. (1975). Investigations in the field of trace analysis. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/30068

Chicago Manual of Style (16^th Edition):

Myers, Gary Lee. “Investigations in the field of trace analysis.” 1975. Doctoral Dissertation, Georgia Tech. Accessed January 17, 2021. http://hdl.handle.net/1853/30068.

MLA Handbook (7^th Edition):

Myers, Gary Lee. “Investigations in the field of trace analysis.” 1975. Web. 17 Jan 2021.

Vancouver:

Myers GL. Investigations in the field of trace analysis. [Internet] [Doctoral dissertation]. Georgia Tech; 1975. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/1853/30068.

Council of Science Editors:

Myers GL. Investigations in the field of trace analysis. [Doctoral Dissertation]. Georgia Tech; 1975. Available from: http://hdl.handle.net/1853/30068

University of Texas – Austin

30. -5635-4455. Recent climate records from a near-entrance stalagmite.

Degree: PhD, Geological Sciences, 2018, University of Texas – Austin

URL: http://hdl.handle.net/2152/68469

► Sub-annually resolved environmental proxies can be valuable archives of climate change, but they are rare in terrestrial settings, and it can be difficult to verify… (more)

▼ Sub-annually resolved environmental proxies can be valuable archives of climate change, but they are rare in terrestrial settings, and it can be difficult to verify their annual nature. We suggest that speleothems that grow in well-ventilated (near-entrance) zones of caves may preserve such high-resolution records. Previous monitoring studies of a well-ventilated, temperate-latitude cave (Westcave Preserve, central Texas) have documented seasonal variations in the oxygen isotope composition of calcite grown on glass substrates. We extend this work to provide a high-resolution (weekly to monthly) 52-year record of δ¹⁸O, Mg, Sr, and Ba in Westcave stalagmite WC-3, using the temperature-dependent variation of calcite δ¹⁸O and Mg concentrations as a precise seasonal chronometer. We confirm this chronology using measurements of radiocarbon in the stalagmite, which show an attenuated, lagged, and spread record of the atmospheric “bomb pulse” from nuclear weapons testing. We develop and test a new inverse modeling framework using these results, and show that stalagmite WC-3 carbon is sourced primarily from decomposition of subsurface organic matter. Finally, we correlate the WC-3 geochemical records to global and local climate parameters, finding that the ability of the records to respond to local annual-scale climate signals (particularly of aridity and precipitation) is highly dependent on the multi-decade phase of the Pacific Decadal Oscillation (PDO). We find that water residence times are low during cold-phase PDO, and high during warm-phase PDO. Additionally, we find that summer Mg concentrations increase with drought conditions (Palmer Drought Severity), especially during warm-phase PDO, and summer δ¹³C values decrease with increasing precipitation, during both cold- and warm-phase PDO. As PDO phases can last for decades, proxy calibration using cave monitoring studies may only be valid for a portion of the climate record. Throughout the entirety of this work, we show comprehensively and for the first time that high-resolution near-entrance speleothems can serve as an important intermediary between short-term monitoring and longer speleothem records. Advisors/Committee Members: Breecker, Dan O. (advisor), Banner, Jay L. (advisor), Mickler, Patrick J (committee member), Shanahan, Timothy M (committee member), Affek, Hagit P (committee member).

Subjects/Keywords: Speleothems; Paleoclimate; Stable isotopes; Trace elements; Radiocarbon

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

-5635-4455. (2018). Recent climate records from a near-entrance stalagmite. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/68469

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-5635-4455. “Recent climate records from a near-entrance stalagmite.” 2018. Doctoral Dissertation, University of Texas – Austin. Accessed January 17, 2021. http://hdl.handle.net/2152/68469.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-5635-4455. “Recent climate records from a near-entrance stalagmite.” 2018. Web. 17 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-5635-4455. Recent climate records from a near-entrance stalagmite. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2018. [cited 2021 Jan 17]. Available from: http://hdl.handle.net/2152/68469.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-5635-4455. Recent climate records from a near-entrance stalagmite. [Doctoral Dissertation]. University of Texas – Austin; 2018. Available from: http://hdl.handle.net/2152/68469

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Open Access Theses and Dissertations