subject:(light)

Cornell University

1. Uesugi, Aaron. Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods .

Degree: 2011, Cornell University

URL: http://hdl.handle.net/1813/29214

► Pulsed Light technology utilizes high powered pulses of broad spectrum light to reduce microorganisms on food and food contact surfaces. While previous research has shown… (more)

▼ Pulsed Light technology utilizes high powered pulses of broad spectrum light to reduce microorganisms on food and food contact surfaces. While previous research has shown Pulsed Light to be effective at reducing various microorganisms on a variety of substrates, a better understanding of inactivation kinetics, pairing Pulsed Light with other antimicrobial treatments, and the cellular effect of Pulsed Light treatment will provide better insight into potential opportunities for future use of this technology. Inactivation of Listeria innocua in liquid suspensions and on the surface of stainless steel showed pronounced tailing. The utilization of the Weibull model accurately predicted inactivation in clear liquids but overestimated Pulsed Light‟s effectiveness on stainless steel surfaces where complex surface properties as well as inoculum size were of significant influence. The combination of Pulsed Light with the antimicrobial nisin was able to reach reductions of 4 to 5 log CFU/sausage of Listeria on the surface of sausages, extending storage from 8 day for individual treatments to 28 to 48 days suggesting that Pulsed Light in combination with additional antimicrobials can effectively reduce surface contamination of ready-to-eat foods. To evaluate the potential for repeated Pulsed Light exposure to lead to changes in growth and resistance behavior of survivors, L. monocytogenes, L. innocua, and E. coli were exposed to both low (1.1 J/cm2) and high (10.1 J/cm2) levels of Pulsed Light and survivors were recovered and subsequently treated for 10 cycles of exposure and recovery. Isolates of all three organisms did not show changes in growth kinetics or resistance after multiple exposures when compared to untreated cells at either low or high fluence levels. Reduction levels of 3-4 and 5-6 log CFU/ml were obtained after exposure to 1.1 and 10.1 J/cm2, respectively, for the untreated control and the repeatedly treated and recovered isolates. Whole genome microarray analysis showed increased transcription levels for stress related proteins, motility, and transcriptional regulators following both Pulsed Light and UV light. Removing the UV spectrum of Pulsed Light lead to no differences between treated and untreated samples and showed a downregulation in motility and cell membrane associated genes as well as no increases in stress response genes following exposure, suggesting that the mechanism of inactivation is related to the UV portion of Pulsed Light and the visible and NIR spectrum do not play a role in cell inactivation. Advisors/Committee Members: Worobo, Randy W. (committeeMember), Novakovic, Andrew Milovan (committeeMember).

Subjects/Keywords: Pulsed Light; UV Light; Listeria

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APA (6^th Edition):

Uesugi, A. (2011). Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods . (Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/29214

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):

Uesugi, Aaron. “Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods .” 2011. Thesis, Cornell University. Accessed February 17, 2020. http://hdl.handle.net/1813/29214.

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

MLA Handbook (7^th Edition):

Uesugi, Aaron. “Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods .” 2011. Web. 17 Feb 2020.

Vancouver:

Uesugi A. Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods . [Internet] [Thesis]. Cornell University; 2011. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/1813/29214.

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

Council of Science Editors:

Uesugi A. Mechanisms Of Inactivation And Microbial Inactivation Kinetics In The Pulsed Light Treatment Of Foods . [Thesis]. Cornell University; 2011. Available from: http://hdl.handle.net/1813/29214

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

2. Lanman, Douglas Robert. Mask-based Light Field Capture and Display.

Degree: PhD, Electrical Science and Computer Engineering, 2011, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:11197/

► This dissertation describes light-efficient methods for capturing and displaying 3D images using thin, optically-attenuating masks. Light transport is modeled, under geometrical optics, as a 4D… (more)

▼ This dissertation describes light-efficient methods for capturing and displaying 3D images using thin, optically-attenuating masks. Light transport is modeled, under geometrical optics, as a 4D function: the light field; this function records the amount of light traveling through any point along any direction. Conventional photographs only record a 2D projection of the incident light field. Each image point is produced by integrating over the full hemisphere of incidence angles. Similarly, conventional displays only approximate a diffuse surface, where the amount of light leaving any point is constant over the full hemisphere of viewing angles. Thus, conventional cameras and displays only support 2D images, for which the perception of scene depth is lost.3D images can be captured and displayed by including masks in conventional camera and display architectures. Parallax barriers are one example; a mask containing a uniform array of slits is placed slightly in front of a conventional display. This mask only allows certain disjoint display regions to be visible from each viewpoint. 3D image capture is achieved by placing a similar mask close to a sensor. In both cases, 3D images come at the cost of decreased resolution and brightness.This dissertation presents a first-principles analysis of dual-layer camera and display architectures, wherein the first layer is a conventional sensor or display and the second layer is a mask. Novel masks are developed that facilitate 3D image capture and display, outperforming conventional parallax barriers in terms of total light transmission and light field resolution. For 3D capture, a family of static, periodic, non-adaptive masks are derived from a frequency-domain analysis. For 3D display, a linear algebraic analysis reveals a set of time-multiplexed, aperiodic, adaptive masks. Four motivating applications are presented: digital photography, single-shot visual hull reconstruction, depth-sensing LCDs, and 3D display using dual-stacked LCDs. Advisors/Committee Members: Taubin, Gabriel (Director), Mundy, Joseph (Reader), Raskar, Ramesh (Reader).

Subjects/Keywords: Light Fields

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APA (6^th Edition):

Lanman, D. R. (2011). Mask-based Light Field Capture and Display. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:11197/

Chicago Manual of Style (16^th Edition):

Lanman, Douglas Robert. “Mask-based Light Field Capture and Display.” 2011. Doctoral Dissertation, Brown University. Accessed February 17, 2020. https://repository.library.brown.edu/studio/item/bdr:11197/.

MLA Handbook (7^th Edition):

Lanman, Douglas Robert. “Mask-based Light Field Capture and Display.” 2011. Web. 17 Feb 2020.

Vancouver:

Lanman DR. Mask-based Light Field Capture and Display. [Internet] [Doctoral dissertation]. Brown University; 2011. [cited 2020 Feb 17]. Available from: https://repository.library.brown.edu/studio/item/bdr:11197/.

Council of Science Editors:

Lanman DR. Mask-based Light Field Capture and Display. [Doctoral Dissertation]. Brown University; 2011. Available from: https://repository.library.brown.edu/studio/item/bdr:11197/

3. Pottakis, Nikolas. Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.

Degree: 2015, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)

URL: http://hdl.handle.net/10442/hedi/35452

►

The thesis analyzes the role of fire and light:1st: In the Myth: It refers to the myths of fire (Prometheus, Hydra, Phoenix), the myth-ratio difference,… (more)

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The thesis analyzes the role of fire and light:1st: In the Myth: It refers to the myths of fire (Prometheus, Hydra, Phoenix), the myth-ratio difference, and the association of light with life, death and love. [The body of the living is hot, that of the dead cold. Love inflames].2nd: During the first Enlightenment, according to the Orphics, Fanis or Eros, the god of light, springs from the cosmic egg. Man, a mixture of land and the Titans blood incorporates evil and requires purification by rites with light. For the Pythagoreans, fire is the first of the 10 principles, and the first of the elements of creation. They believe in a "central fire". Empedocles connects fire and light with knowledge ("skotoessa doxa"). Parmenides describes the journey from "opinion" (dark) to truth (light) with the chariot of the sun. Heraclitus introduces ratio in philosophy as fire. The thesis analyzes the principles of flux, enantiodromia, balance of opposites, dispute, harmony.3rd: In classical philosophy: In Plato's Republic the images of the sun, the divided line and the cave are analyzed, so as the problems of "being-appearing", "up-down" (movement as a feature of the soul), education, as "roaming" and "ascent" from the shadow of the cave's fire to sunlight (the good). Τhe fire that does not burn but illuminates and allows vision is distinguished in Timaeus. In the 7th Letter and the Symposium fire (intuitive knowledge) emerges suddenly.For Aristotle, fire is light in the soul. The soul uses mental images ("ghosts"). For the intellect (“ουδέποτε νοεί άνευ φαντάσματος η ψυχή”), the desire (“ορεκτικόν ουκ άνευ φαντασίας”), the choice of action (“πότερον γαρ πράξει, τόδε ή τόδε,…εκ πλειόνων φαντασμάτων ποιείν”). Analyzing the functioning of the imagination (figurative and creative) and the shape of testing the action in thought, adopted later by Freud and neuropsychology.4th: At games (Olympic or local, sports, drama, speech, music), rituals, torch races and celebrations. Laxative in cities and forests, with dances, songs, lit torches (with Maenads, Bacchae, Koryvantes, Kavirous)."Transition" celebrations (of birth, marriage, death). Celebrations of love and fertilization (of rain, sowing, vegetation)5th: In their symbolic: Fire and light were used as symbols of gods, life, truth, beauty, hope, joy, catharsis, dispute, anger, love , freedom. And the thesis substantiates its positions, with references to myth, daily life and ancient tragedy.The epilogue focuses to the light of the mind, appearing in imaging methods in the form of electromagnetic sparks in a mysteriously facsimile form, regardless of their source (logic, imagination, emotion) and the hopes that its usage (and that of the neural mirrors) opens for the acquisition of social consciousness and the feelings of altruism, solidarity and insight.

Η διατριβή αναλύει το ρόλο της φωτιάς και του φωτός: 1ον: Στο μύθο. Αναφέρεται στους μύθους της φωτιάς (Προμηθέα, Λερναίας Ύδρας, Φοίνικα), τη διαφορά μύθου-λόγου, και τη συσχέτιση του φωτός με τη ζωή, το θάνατο και τον έρωτα. [ Το…

Subjects/Keywords: Φως; Light

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APA (6^th Edition):

Pottakis, N. (2015). Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. (Thesis). National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Retrieved from http://hdl.handle.net/10442/hedi/35452

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):

Pottakis, Nikolas. “Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.” 2015. Thesis, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Accessed February 17, 2020. http://hdl.handle.net/10442/hedi/35452.

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

MLA Handbook (7^th Edition):

Pottakis, Nikolas. “Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης.” 2015. Web. 17 Feb 2020.

Vancouver:

Pottakis N. Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. [Internet] [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2015. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10442/hedi/35452.

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

Council of Science Editors:

Pottakis N. Η φωτιά και το φως: στο μύθο, στη φιλοσοφία, στην τραγωδία και στη ζωή της πόλης. [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2015. Available from: http://hdl.handle.net/10442/hedi/35452

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

4. Kokkalis, Nikolaos. Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.

Degree: 2016, Ionian University; Ιόνιο Πανεπιστήμιο

URL: http://hdl.handle.net/10442/hedi/39982

►

This thesis focuses on the investigation of the function of a minimum natural light source – which is specified as the light of a candle… (more)

▼

This thesis focuses on the investigation of the function of a minimum natural light source – which is specified as the light of a candle - and the role and potential of light sources in the field of Art, which relates to interactive video-installations. The particular research (a) refers to the metamorphoses of the minimum natural light source, as well as the meanings and symbolisms, which it has acquired through centuries. Additionally, (b) it aims to bring out those properties, which give to light a prominent role in Art and especially in the field of new media and its applications. Finally, (c) it examines the dynamics of the minimum light source - if something like this indeed exists – as well as light as an independent and sovereign entity in the work.In the course of its formation, this thesis developed a multi-part structure. Thus, each chapter is accompanied by its corresponding installation.

Η διδακτορική έρευνα αφορά στη διερεύνηση της λειτουργίας της ελάχιστης φυσικής φωτεινής πηγής –την οποία προσδιορίζει στο φως ενός κεριού- καθώς και στο ρόλο και τις δυνατότητες των φωτεινών πηγών στο πεδίο της τέχνης που σχετίζεται με τις διαδραστικές video-εγκαταστάσεις. Το κάθε κεφάλαιο της διατριβής συνοδεύεται από αντίστοιχο έργο-εγκατάσταση.Η συγκεκριμένη έρευνα (α) αναφέρεται στις μεταμορφώσεις της ελάχιστης φυσικής φωτεινής πηγής, τις έννοιες καθώς και τους συμβολισμούς τους οποίους αυτή επιδέχεται διαμέσου των αιώνων. Επιπρόσθετα, (β) καλείται να αναδείξει τις ιδιότητες εκείνες που προσδίδουν στο φως πρωτεύοντα ρόλο στην Τέχνη και ειδικά στον τομέα των νέων μέσων και των εφαρμογών της. Τέλος, (γ) εξετάζει τη δυναμική της ελάχιστης πηγής φωτός -αν υφίσταται κάτι τέτοιο– και το φως ως ανεξάρτητη και κυρίαρχη οντότητα στο έργο.

Subjects/Keywords: Φως; Light

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

APA (6^th Edition):

Kokkalis, N. (2016). Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. (Thesis). Ionian University; Ιόνιο Πανεπιστήμιο. Retrieved from http://hdl.handle.net/10442/hedi/39982

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):

Kokkalis, Nikolaos. “Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.” 2016. Thesis, Ionian University; Ιόνιο Πανεπιστήμιο. Accessed February 17, 2020. http://hdl.handle.net/10442/hedi/39982.

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

MLA Handbook (7^th Edition):

Kokkalis, Nikolaos. “Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις.” 2016. Web. 17 Feb 2020.

Vancouver:

Kokkalis N. Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. [Internet] [Thesis]. Ionian University; Ιόνιο Πανεπιστήμιο; 2016. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10442/hedi/39982.

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

Council of Science Editors:

Kokkalis N. Φως και εγκαταστάσεις: η χρήση της ελάχιστης φυσικής φωτεινής πηγής σε διαδραστικές βίντεο – εγκαταστάσεις. [Thesis]. Ionian University; Ιόνιο Πανεπιστήμιο; 2016. Available from: http://hdl.handle.net/10442/hedi/39982

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

Addis Ababa University

5. Yibeltal, Siyum. Two-Mode Coherent and Subharmonic Light Beams .

Degree: 2012, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/1424

► Applying c-number Langevin equations, we have calculated the Q function for the two- mode coherent and subharmonic light. We have then determined the Q function… (more)

Subjects/Keywords: Light Beams

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APA (6^th Edition):

Yibeltal, S. (2012). Two-Mode Coherent and Subharmonic Light Beams . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1424

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):

Yibeltal, Siyum. “Two-Mode Coherent and Subharmonic Light Beams .” 2012. Thesis, Addis Ababa University. Accessed February 17, 2020. http://etd.aau.edu.et/dspace/handle/123456789/1424.

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

MLA Handbook (7^th Edition):

Yibeltal, Siyum. “Two-Mode Coherent and Subharmonic Light Beams .” 2012. Web. 17 Feb 2020.

Vancouver:

Yibeltal S. Two-Mode Coherent and Subharmonic Light Beams . [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2020 Feb 17]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1424.

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

Council of Science Editors:

Yibeltal S. Two-Mode Coherent and Subharmonic Light Beams . [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1424

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

University of Cincinnati

6. VAUGHN, CHAD DEAN. Light: in response to time.

Degree: M. Arch., Design, Architecture, Art and Planning : Architecture (Master of), 2008, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212179576

► Light can be described as the sensation aroused by stimulation of the visual organs; making vision possible. Being predominately visual beings, understanding the power… (more)

Subjects/Keywords: Architecture; Light

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

APA (6^th Edition):

VAUGHN, C. D. (2008). Light: in response to time. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212179576

Chicago Manual of Style (16^th Edition):

VAUGHN, CHAD DEAN. “Light: in response to time.” 2008. Masters Thesis, University of Cincinnati. Accessed February 17, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212179576.

MLA Handbook (7^th Edition):

VAUGHN, CHAD DEAN. “Light: in response to time.” 2008. Web. 17 Feb 2020.

Vancouver:

VAUGHN CD. Light: in response to time. [Internet] [Masters thesis]. University of Cincinnati; 2008. [cited 2020 Feb 17]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212179576.

Council of Science Editors:

VAUGHN CD. Light: in response to time. [Masters Thesis]. University of Cincinnati; 2008. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1212179576

University of Ottawa

7. Bouchard, Frédéric. Classical and Quantum Dynamics of Twisted Light .

Degree: 2016, University of Ottawa

URL: http://hdl.handle.net/10393/35209

► This thesis encompasses a body of experimental work on the dynamics of twisted light. We first deal with the generation and reconstruction of twisted light… (more)

Subjects/Keywords: Twisted light

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APA (6^th Edition):

Bouchard, F. (2016). Classical and Quantum Dynamics of Twisted Light . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/35209

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):

Bouchard, Frédéric. “Classical and Quantum Dynamics of Twisted Light .” 2016. Thesis, University of Ottawa. Accessed February 17, 2020. http://hdl.handle.net/10393/35209.

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

MLA Handbook (7^th Edition):

Bouchard, Frédéric. “Classical and Quantum Dynamics of Twisted Light .” 2016. Web. 17 Feb 2020.

Vancouver:

Bouchard F. Classical and Quantum Dynamics of Twisted Light . [Internet] [Thesis]. University of Ottawa; 2016. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10393/35209.

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

Council of Science Editors:

Bouchard F. Classical and Quantum Dynamics of Twisted Light . [Thesis]. University of Ottawa; 2016. Available from: http://hdl.handle.net/10393/35209

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

University of British Columbia

8. Johnson, Arthur C. The scattering of light by small particles .

Degree: 1946, University of British Columbia

URL: http://hdl.handle.net/2429/39392

[]

Subjects/Keywords: Light

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APA (6^th Edition):

Johnson, A. C. (1946). The scattering of light by small particles . (Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/39392

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):

Johnson, Arthur C. “The scattering of light by small particles .” 1946. Thesis, University of British Columbia. Accessed February 17, 2020. http://hdl.handle.net/2429/39392.

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

MLA Handbook (7^th Edition):

Johnson, Arthur C. “The scattering of light by small particles .” 1946. Web. 17 Feb 2020.

Vancouver:

Johnson AC. The scattering of light by small particles . [Internet] [Thesis]. University of British Columbia; 1946. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/2429/39392.

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

Council of Science Editors:

Johnson AC. The scattering of light by small particles . [Thesis]. University of British Columbia; 1946. Available from: http://hdl.handle.net/2429/39392

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

University of Guelph

9. Semeniuk, Kent. Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities .

Degree: 2014, University of Guelph

URL: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082

► Light pollution is broadly defined as the unnecessary illumination of the nocturnal environment. Light pollution is a pervasive phenomena shown to have harmful consequences for… (more)

Subjects/Keywords: Light Pollution

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APA (6^th Edition):

Semeniuk, K. (2014). Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities . (Thesis). University of Guelph. Retrieved from https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082

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):

Semeniuk, Kent. “Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities .” 2014. Thesis, University of Guelph. Accessed February 17, 2020. https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082.

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

MLA Handbook (7^th Edition):

Semeniuk, Kent. “Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities .” 2014. Web. 17 Feb 2020.

Vancouver:

Semeniuk K. Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities . [Internet] [Thesis]. University of Guelph; 2014. [cited 2020 Feb 17]. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082.

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

Council of Science Editors:

Semeniuk K. Gazing Up: An Exploration of Municipal Night Lighting Practices Amongst Six Canadian Municipalities . [Thesis]. University of Guelph; 2014. Available from: https://atrium.lib.uoguelph.ca/xmlui/handle/10214/8082

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

Michigan State University

10. Ranney, Jane Ellen. Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.

Degree: PhD, 1964, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:37376

Subjects/Keywords: Light

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

APA (6^th Edition):

Ranney, J. E. (1964). Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. (Doctoral Dissertation). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:37376

Chicago Manual of Style (16^th Edition):

Ranney, Jane Ellen. “Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.” 1964. Doctoral Dissertation, Michigan State University. Accessed February 17, 2020. http://etd.lib.msu.edu/islandora/object/etd:37376.

MLA Handbook (7^th Edition):

Ranney, Jane Ellen. “Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions.” 1964. Web. 17 Feb 2020.

Vancouver:

Ranney JE. Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. [Internet] [Doctoral dissertation]. Michigan State University; 1964. [cited 2020 Feb 17]. Available from: http://etd.lib.msu.edu/islandora/object/etd:37376.

Council of Science Editors:

Ranney JE. Perceptions of subfusional photic intermittencies under various intensites and pulse-to-cycle fractions. [Doctoral Dissertation]. Michigan State University; 1964. Available from: http://etd.lib.msu.edu/islandora/object/etd:37376

Universidad de Cantabria

11. Sanz Casado, Juan Marcos. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.

Degree: 2011, Universidad de Cantabria

URL: http://hdl.handle.net/10902/1565

► RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple… (more)

▼ RESUMEN: Definir los parámetros de polarización de la luz procedente de una muestra aporta una mayor información sobre las propiedades de ésta que la simple medida de la intensidad luminosa difundida. Cuando un haz luminoso sufre una perturbación debida a cualquier interacción con un medio, los campos electromagnéticos del haz incidente y el del haz emergente, expresados en términos de los parámetros de Stokes, pueden ser relacionados mediante la denominada matriz de Mueller. En este aspecto, el conocer la evolución de los parámetros de dicha matriz del sistema, nos permitiría definir cómo se comporta éste frente a la luz incidente. Para tal objetivo, se ha puesto a punto un polarímetro dinámico basado en técnicas de Transformada de Fourier, que permite determinar con una sola medida los 16 elementos de la matriz de Mueller. Ésta nos mostrará los cambios sufridos por la polarización del haz incidente debido a su interacción con una muestra problema. Aplicando el método de Descomposición Polar, se puede ver que cualquier sistema puro, con matriz de Mueller M, responde a la siguiente relación: M=R*D, donde R y D simbolizan las matrices de Mueller de un medio Retardador ideal y de un medio Diatenuador ideal, respectivamente. En una versión extendida de éste teorema, teniendo en cuenta que no todos los medios son ideales, sino que hay medios en los que aparecen efectos de despolarización, la descomposición de la matriz de Mueller daría lugar a: M=Z*R*D, tomando Z como la matriz de Mueller de un sistema despolarizante. De esta forma, utilizando algebra matricial, podemos descomponer la matriz de un sistema problema, en matrices de menor complejidad, con un estricto sentido físico. Partiendo de éstos resultados teóricos, y por medio del uso del polarímetro dinámico para la caracterización polarimétrica de los sistemas, se han analizado muestras de diversos tipos: superficies planas microestructuradas, para evaluar el efecto de la composición, tamaño e interacción; suspensiones de micropartículas y nanopartículas en coloide, para caracterizar su tamaño y composición; y sustancias quirales en medios turbios (en éste aspecto, recientemente ha sido demostrada la validez de éste método para el análisis in situ de tejidos biológicos). Asimismo, se han caracterizado componentes ópticos y polarimétricos por transmisión y reflexión, demostrando la validez del método. Finalmente se han llevado a cabo simulaciones computacionales a fin de estudiar patrones de comportamiento en sistemas complejos por medio del método de Descomposición Polar. Advisors/Committee Members: Saiz Vega, José María (advisor), Universidad de Cantabria (other).

Subjects/Keywords: Light scattering

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APA (6^th Edition):

Sanz Casado, J. M. (2011). Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. (Doctoral Dissertation). Universidad de Cantabria. Retrieved from http://hdl.handle.net/10902/1565

Chicago Manual of Style (16^th Edition):

Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Doctoral Dissertation, Universidad de Cantabria. Accessed February 17, 2020. http://hdl.handle.net/10902/1565.

MLA Handbook (7^th Edition):

Sanz Casado, Juan Marcos. “Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects.” 2011. Web. 17 Feb 2020.

Vancouver:

Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Internet] [Doctoral dissertation]. Universidad de Cantabria; 2011. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10902/1565.

Council of Science Editors:

Sanz Casado JM. Polarimetría de sistemas difusores con microestructuras: efectos de difusión múltiple: Polarimetry of microstructured scattering systems : multiple scattering effects. [Doctoral Dissertation]. Universidad de Cantabria; 2011. Available from: http://hdl.handle.net/10902/1565

University of South Africa

12. Curtis, Angela Lesley. The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) .

Degree: 2019, University of South Africa

URL: http://hdl.handle.net/10500/26151

► The large-scale use of artificial light throughout the night has occurred in the last 100 years and continues to increase globally. Artificial light impacts many… (more)

▼ The large-scale use of artificial light throughout the night has occurred in the last 100 years and continues to increase globally. Artificial light impacts many animal and plant taxa. The effects of artificial light on bats is species specific. The Namib Desert in Namibia is still relatively dark but subject to the same drivers of increasing development and urbanization that have increased the spread of artificial light globally. This study investigated the effects of the introduction of ultraviolet, yellow and white artificial light on the activity of bats in a rural environment with minimal development in the Namib Desert. Four sites, 100 m apart, had one light and one bat detector each. The fourth light was a dark control. Each site was sampled four times by each light type. Bat activity was recorded by the bat detectors. Eight bat species were recorded during the experiment. Activity increased for open air and clutter-edge foraging species analysed. Broadband white light caused the highest increases in activity followed by yellow light when compared with the dark control site. Ultraviolet light caused the lowest increases in activity contrary to expectations.; Mengwaga ye 100 ya go feta go bile le koketšego ye kgolo ya tšhomišo ya seetša sa maitirelo bošego ka moka. Setlwaedi se se ata kudu lefaseng ka moka go feta pele, gomme se ama diphoofolo tše ntši le mehuta ya dimela. Leganata la Namib go la Namibia gabotse le sa ntše le swiswetše, eupša le ka fase ga dikgontšhi tša go oketša tlhabollo le toropofatšo tšeo di hlotšego koketšego tšhomišong ya seetša sa maitirelo lefaseng ka bophara. Dikhuetšo tša seetša sa maitirelo go memankgagane di fapana go ya ka mohuta. Nyakišišo ye e nyakišišitše dikhuetšo tša tsebagatšo ya seetša sa maitirelo sa go phadima, serolwane le se sešweu go modiro wa memankgagane ka tikologong ya nagaselegae ya go ba le tlhabollo ye nyane ka Leganateng la Namib. Seetša se setee le tithekethara e tee ya mankgagane di hlomilwe go le lengwe le le lengwe la mafelo a mane, a go arogantšhwa ka 100 m. Seetša sa bone se be se le taolo ya leswiswi. Lefelo le lengwe le le lengwe le dirilwe mohlala makga a mane ka mohuta wo mongwe le wo mongwe wa seetša. Modiro wa mankgagane e rekotilwe ka ditithekethara tša mankgagane. Mehuta ya mankgagane ye seswai e rekotilwe nakong ya eksperimente. Modiro wa mehuta ya sebakabakeng le ya go sela thobekgeng ye e sekasekilwego e oketšegile. Seetša se sešweu sa porotepente se hlotše dikoketšego tša modiro, sa latelwa ke seetša se se serolwane, ge se bapetšwa le lefelo la taolo ya leswiswi. Go fapana le ditetelo, seetša sa go phadima se hlotše dikoketšego tša fasefase modirong. Advisors/Committee Members: Keith, M (advisor), Seamark, E (advisor), Strauss, W. M (advisor).

Subjects/Keywords: Artificial light; Light wavelengths; Bats; Namib Desert; Bat activity; Ultraviolet light; Yellow light; White light; Compact fluorescent light bulbs; Undeveloped habitat

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

APA (6^th Edition):

Curtis, A. L. (2019). The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) . (Masters Thesis). University of South Africa. Retrieved from http://hdl.handle.net/10500/26151

Chicago Manual of Style (16^th Edition):

Curtis, Angela Lesley. “The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) .” 2019. Masters Thesis, University of South Africa. Accessed February 17, 2020. http://hdl.handle.net/10500/26151.

MLA Handbook (7^th Edition):

Curtis, Angela Lesley. “The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) .” 2019. Web. 17 Feb 2020.

Vancouver:

Curtis AL. The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) . [Internet] [Masters thesis]. University of South Africa; 2019. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10500/26151.

Council of Science Editors:

Curtis AL. The effects of artificial lighting on activity of Namib Desert bats (Mammalia: Chiroptera) . [Masters Thesis]. University of South Africa; 2019. Available from: http://hdl.handle.net/10500/26151

Texas A&M University

13. Upadhyaya, Kapil. Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-2873

► This research developed the Optical Light Pipe (OLP) as a feasible solution to solve the problem of insufficient daylighting in deep plan office spaces for… (more)

▼ This research developed the Optical Light Pipe (OLP) as a feasible solution to solve the problem of insufficient daylighting in deep plan office spaces for predominantly sunny climates. It further combined the OLP with a Specular Light Shelf (SLS) to achieve uniform daylighting. This research was performed with an experimental setup of two 1:4 scale models of deep plan office spaces, modified from an earlier research on optical light pipe at College Station, TX. Blinds and shading devices were installed on the south fa?ade to provide daylight to the front zone of a 20 feet by 30 feet office module. The back zone was daylit by the OLP hidden in the plenum. The existing OLP design was optimized through computer aided ray-tracing. The SLS design was based on an earlier prototype designed at Lawrence Berkeley National Labs (LBNL). Results were based on observations made on clear and cloudy sky days between February 3rd and March 17th. The OLP achieved more than 300 lux of average workplane illuminance for 7.4 hours, when global horizontal illuminance was greater than 40,000 lux. It also achieved 200 lux of illuminance higher than an earlier prototype (Martins-Mogo, 2005) on workplane between 1000hrs and 1630hrs. It exhibited a glare free daylight distribution with luminance ratios well within prescribed limits on most of the vertical surfaces, with a relatively uniform illuminance distribution on back taskplane. OLP was better than windows with blinds and shading at providing diffuse daylight in backzone on a cloudy day, when global horizontal illuminance was greater than 20,000 lux. The OLP used in combination with SLS achieved more than 500 lux of average workplane illuminance for 6 hours, when global horizontal illuminance was greater than 40,000 lux. SLS also produced more uniform illuminance levels on the workplane at all times and on the leftwall at most times. However, it produced non-uniform luminance distribution on walls and ceiling and luminance ratios higher than allowable limits on the sidewall for some morning hours, and hence needed further refinement in design. Advisors/Committee Members: Beltran, Liliana O. (advisor), F.Michael Speed (committee member), Vanegas, Jorge A. (committee member).

Subjects/Keywords: Optical; light; pipe; specular; light; shelf

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APA (6^th Edition):

Upadhyaya, K. (2009). Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-2873

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):

Upadhyaya, Kapil. “Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf.” 2009. Thesis, Texas A&M University. Accessed February 17, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-2873.

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

MLA Handbook (7^th Edition):

Upadhyaya, Kapil. “Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf.” 2009. Web. 17 Feb 2020.

Vancouver:

Upadhyaya K. Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2873.

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

Council of Science Editors:

Upadhyaya K. Evaluation of a Deep Plan Office Space Daylit with an Optical Light Pipe and a Specular Light Shelf. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-2873

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

NSYSU

14. Lien, Kuan-Yi. The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.

Degree: Master, Electro-Optical Engineering, 2009, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851

► We report that the tandem OLEDs made of two electroluminescent (EL) units connected by the interconnecting layer. If It is compared wih the traditional OLEDs.… (more)

▼ We report that the tandem OLEDs made of two electroluminescent (EL) units connected by the interconnecting layer. If It is compared wih the traditional OLEDs. The tandem OLEDs have higher efficiency and well lifetime. We not only used the single emitting layer WOLEDs as EL unit but also studied the effect of the interconnecting layer for whole device. First, we designed the interconnecting layer with Alq3ï¼Li (1%) (n-doping layer)/MoO3 (p-doping layer), and we optimized the thickness of the interconnecting layer by using green unit cell (Alq3 for EML), ITO/NPB(65 nm)/Alq3(30 nm)/Alq3(30 nm)/Alq3(x nm)ï¼Li (1%)/MoO3(y nm)/NPB(65 nm)/Alq3(30 nm)/Alq3(30 nm)/LiF(0.8 nm)/Al(200 nm) x=10ï¼20ï¼30ï¼40ï¼y=1ï¼3ï¼5ï¼7ï¼10 We found that the best thickness of Alq3ï¼Li (1%) and MoO3 are 20 nm and 5 nm. In our study, we concluded that there are the best thickness to each interconnecting layer, and it keeps the charge balance between two units. Finally, we used our single emitting layer WOLEDs as unit cell, which used 1,3,5-Tri(1-pyrenyl)benzene (TPB3) as the host, and 4-(dicyanomethylene)-2-tert-butyl-6(1,1,7,7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB) as the guest, unit cell was ITO(130 nm)/NPB(65 nm)/ TPB3(30 nm)ï¼DCJTB(0.05%)/ Alq3(30 nm)/LiF(8 nm)/Al(200 nm) Whole device was ITO(130 nm)/NPB(65 nm)/ TPB3(30 nm)ï¼DCJTB(0.05%)/ Alq3(30 nm)/Alq3(20 nm)ï¼Li(1%)/MoO3(5 nm)/NPB(65 nm)/TPB3(30 nm)ï¼DCJTB(0.05%)/Alq3(30 nm)/ LiF(0.8 nm)/Al(200 nm) We got almost three times luminance from the tandem one at the same current density (670 cd/m2 for 2360 cd/m2 at 20 mA/cm2) and efficiency as high as 9.7 cd/A ( at 24 mA/cm2). Itâs a excellent contribution for device lifetime. But the operation voltage and the power efficiency didnât reach to our expectancy. In order to improve the disadvantage, we changed the concentration of n-doping layer Alq3ï¼Li (z %)ï¼z=1%ï¼2%ï¼3%. It was actually improved the turn-on voltage from 10 V to 7 V. But the luminescent characteristics also degenerated. Although we enhanced the charge mobility of the n-doping layer, it also caused the degeneration of luminescent characteristics because of the unbalance of the charge transference.We got the efficiency 8.1 cd/A ( at 14 V) and almost two times luminance from the tandem one at the same current density (670 cd/m2 for 1760 cd/m2 at 20 mA/cm2), most close to the white area of CIE coordinates was (0.30 , 0.37) at 15 V. Its range of CIE coordinates was (0.35 , 0.46)~(0.28 , 0.33) at 8 V~20 V. We have already developed the tandem WOLEDs using single white emitting layer as EL units that have never be reported. It not only maintained the advantages of the tandem structure, but also had excellent stability of luminescent characteristics at wide range operation voltage. We reached our goal to improve the WOLEDs and make it more suitable for commercial applications, especially for the development of light sources. Advisors/Committee Members: Mei-Ying Chang (committee member), Chih-Chien Lee (chair), Jui-Ming Yeh (chair), Yu-Kai Han (chair), Ping-Tsung Huang (chair).

Subjects/Keywords: white light; tandem; Organic Light-Emitting Diodes

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

APA (6^th Edition):

Lien, K. (2009). The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851

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):

Lien, Kuan-Yi. “The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.” 2009. Thesis, NSYSU. Accessed February 17, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851.

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

MLA Handbook (7^th Edition):

Lien, Kuan-Yi. “The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure.” 2009. Web. 17 Feb 2020.

Vancouver:

Lien K. The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. [Internet] [Thesis]. NSYSU; 2009. [cited 2020 Feb 17]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851.

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

Council of Science Editors:

Lien K. The Study of Highly Efficient Single Emitting Layer White Light Organic Light-Emitting Diodes on Tandem Structure. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0727109-162851

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

Louisiana State University

15. Barnett, Jonathan Zell. Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.

Degree: MSCE, Civil and Environmental Engineering, 2015, Louisiana State University

URL: etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285

► One of the most important factors controlling the growth of microalgae is light. Light quality and light quantity have a dramatic effect on the production… (more)

Subjects/Keywords: light quantity; cyanobacteria; microalgae; light quality

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APA (6^th Edition):

Barnett, J. Z. (2015). Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. (Masters Thesis). Louisiana State University. Retrieved from etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285

Chicago Manual of Style (16^th Edition):

Barnett, Jonathan Zell. “Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.” 2015. Masters Thesis, Louisiana State University. Accessed February 17, 2020. etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285.

MLA Handbook (7^th Edition):

Barnett, Jonathan Zell. “Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture.” 2015. Web. 17 Feb 2020.

Vancouver:

Barnett JZ. Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. [Internet] [Masters thesis]. Louisiana State University; 2015. [cited 2020 Feb 17]. Available from: etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285.

Council of Science Editors:

Barnett JZ. Effects of Light Quality and Light Quantity on the Growth Kinetics of a Louisiana Native Microalgal/Cyanobacterial Co-culture. [Masters Thesis]. Louisiana State University; 2015. Available from: etd-11092015-123040 ; https://digitalcommons.lsu.edu/gradschool_theses/3285

Texas A&M University

16. Gill, Sukhtej Singh. A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-1727

► The thesis discusses the characteristics of natural light that are visible inside concrete buildings designed in the late twentieth century. The study addresses three major… (more)

▼ The thesis discusses the characteristics of natural light that are visible inside concrete buildings designed in the late twentieth century. The study addresses three major objectives. First is to identify the characteristics of natural light visible inside these spaces. Second is to understand the use of natural light to illuminate different spaces. Third is to explore the relation between the characteristics of natural light and the overall perception of the space. With these objectives in mind, a comprehensive literature review was done to develop the hypotheses for this thesis. The first hypothesis states that the overall perception of a space is affected by certain basic characteristics of natural light. The second hypothesis suggests that the overall character of a space can be enhanced by emphasizing the source of natural light as a visual element. To test these hypotheses, this thesis studies the effect of natural light in three buildings made out of reinforced concrete in the late twentieth century. The three buildings are the Chapel of Notre Dame du Haut Ronchamp by Le Corbusier, the Kimbell Art Museum by Louis I. Kahn and the Church of the Light by Tadao Ando. The method of analysis is based on the selection of a spatial envelope in each building that helps to provide an ideal framework for studying the effects of light. The method takes into consideration the principles of visual perception and the use of images depicting the varied effects of light inside the spatial envelope. The results of the analysis show that the three projects employ similar design principles to achieve some of the common effects of light, and the listed characteristics of light in relation to the overall perception of the space do not vary to a great extent when moving from one project to another. The emphasis on the source of natural light is a common and recurring theme in all three buildings. The thesis concludes that the results support the hypotheses, and that the quality of a space is dependent upon the way a designer brings natural light into the space. Advisors/Committee Members: Miranda, Valerian (advisor), Nash, William R. (committee member), Velasco, Guillermo Vasquez de (committee member).

Subjects/Keywords: Natural Light; Perception

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APA (6^th Edition):

Gill, S. S. (2009). A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-1727

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):

Gill, Sukhtej Singh. “A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando.” 2009. Thesis, Texas A&M University. Accessed February 17, 2020. http://hdl.handle.net/1969.1/ETD-TAMU-1727.

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

MLA Handbook (7^th Edition):

Gill, Sukhtej Singh. “A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando.” 2009. Web. 17 Feb 2020.

Vancouver:

Gill SS. A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1727.

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

Council of Science Editors:

Gill SS. A study of the characteristics of natural light in selected buildings designed by Le Corbusier, Louis I. Kahn and Tadao Ando. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-1727

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

Victoria University of Wellington

17. Amour, Sol. Body | Sense Experience: An Architecture of Atmosphere and Light.

Degree: 2012, Victoria University of Wellington

URL: http://hdl.handle.net/10063/2602

► This thesis explores notions of the immaterial and metaphysical in architecture. It seeks to ‘elicit a sense of wonder’ in a participant of experiential space… (more)

Subjects/Keywords: Affect; Atmosphere; Light

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APA (6^th Edition):

Amour, S. (2012). Body | Sense Experience: An Architecture of Atmosphere and Light. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/2602

Chicago Manual of Style (16^th Edition):

Amour, Sol. “Body | Sense Experience: An Architecture of Atmosphere and Light.” 2012. Masters Thesis, Victoria University of Wellington. Accessed February 17, 2020. http://hdl.handle.net/10063/2602.

MLA Handbook (7^th Edition):

Amour, Sol. “Body | Sense Experience: An Architecture of Atmosphere and Light.” 2012. Web. 17 Feb 2020.

Vancouver:

Amour S. Body | Sense Experience: An Architecture of Atmosphere and Light. [Internet] [Masters thesis]. Victoria University of Wellington; 2012. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10063/2602.

Council of Science Editors:

Amour S. Body | Sense Experience: An Architecture of Atmosphere and Light. [Masters Thesis]. Victoria University of Wellington; 2012. Available from: http://hdl.handle.net/10063/2602

Victoria University of Wellington

18. Tyrrell, Sarah. Endemic Light.

Degree: 2017, Victoria University of Wellington

URL: http://hdl.handle.net/10063/6830

► This thesis explores endemic light and atmosphere through the shifting scales of three architectural interventions. These interventions are guided by site and theoretical research, providing… (more)

Subjects/Keywords: Architecture; Light; Atmosphere

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APA (6^th Edition):

Tyrrell, S. (2017). Endemic Light. (Masters Thesis). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/6830

Chicago Manual of Style (16^th Edition):

Tyrrell, Sarah. “Endemic Light.” 2017. Masters Thesis, Victoria University of Wellington. Accessed February 17, 2020. http://hdl.handle.net/10063/6830.

MLA Handbook (7^th Edition):

Tyrrell, Sarah. “Endemic Light.” 2017. Web. 17 Feb 2020.

Vancouver:

Tyrrell S. Endemic Light. [Internet] [Masters thesis]. Victoria University of Wellington; 2017. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10063/6830.

Council of Science Editors:

Tyrrell S. Endemic Light. [Masters Thesis]. Victoria University of Wellington; 2017. Available from: http://hdl.handle.net/10063/6830

University of Hong Kong

19. 冯聪; Feng, Cong. Phosphor-free polychromatic emission InGaN light-emitting diode.

Degree: PhD, 2016, University of Hong Kong

URL: http://hdl.handle.net/10722/235877

► Broadband white light is indispensable for applications involving general illumination and displaying, a task conventionally fulfilled by fluorescent light sources. Light-emitting diodes (LEDs) based on… (more)

▼ Broadband white light is indispensable for applications involving general illumination and displaying, a task conventionally fulfilled by fluorescent light sources. Light-emitting diodes (LEDs) based on the Group-III nitrides have been taking over that role in recent years, despite the fact that LEDs are inherently monochromatic sources with spectral line-widths in the range of 20 to 50nm. The most adopted industrial solution is to shift part of the light emitted by a blue InGaN chip into longer wavelength, using color converters such as phosphors. To achieve a white light, the Stokes shift is usually above 100nm. The tradeoff is a dramatic energy loss during the color-conversion process. Also, the relatively shorter lifetimes of phosphors compared to that of the LED chips reduces chromatic reliability of such devices. Researches have long been working for a phosphor-free white LED. It is known that c-plane grown InGaN multi-quantum wells (MQWs) experience high strain due to the lattice mismatch between the wells and the barriers. The strain-induced piezoelectric field narrows the effective energy band gap and lead to a red shift of the emission, known as the quantum-confined Stark effect (QCSE). It has been shown that the QCSE can be partially eliminated by releasing the strain via nanoscale structures such as nanopillars. Studies on the strain-relax effect of nanopillars have shown a blue shift of 70-200 meV, depending on the size of the pillars. 200 meV corresponds to about 50nm in wavelength in the visible band, which may provide another color-converting solution for white lighting if further enhanced. Nanosphere lithography (NSL) uses nanospheres as the lithography mask. It has been widely studied and applied in recent years since it offers ordered nanopatterns in a simple and low-cost way. The key process of NSL is the formation of the mask from spheres that are initially in colloidal form. This mainly takes use of the self-assembly phenomenon during the evaporation of the dispersant solvent, attributed to the attractive capillary forces. Till now, based on the self-assembly process, nanopatterns with sub-100nm feature size have been achieved. By taking advantage of NSL, a phosphor-free polychromatic LED structure comprising a combination of high-density microstructured and nanostructured InGaN MQWs is proposed and demonstrated. Polychromatic emission is realized by taking advantage of the low-dimensional-induced strain-relax effect, combining light emitted from strain-relaxed nanotips at wavelengths shorter than the as-grown by as much as 80 nm with longer-wavelength light emitted from the larger unscathed microdisks. The localized emission characteristics have been characterized by spatially-resolved near-field photoluminescence (nf-PL) spectroscopy which allows both the photoluminescence (PL) signal and spectrum from individual nanotips to be optically-resolved and distinguished from emission at the larger-dimensioned regions. The far-field optical properties are evaluated through electroluminescent…

Subjects/Keywords: Light emitting diodes

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APA (6^th Edition):

冯聪; Feng, C. (2016). Phosphor-free polychromatic emission InGaN light-emitting diode. (Doctoral Dissertation). University of Hong Kong. Retrieved from http://hdl.handle.net/10722/235877

Chicago Manual of Style (16^th Edition):

冯聪; Feng, Cong. “Phosphor-free polychromatic emission InGaN light-emitting diode.” 2016. Doctoral Dissertation, University of Hong Kong. Accessed February 17, 2020. http://hdl.handle.net/10722/235877.

MLA Handbook (7^th Edition):

冯聪; Feng, Cong. “Phosphor-free polychromatic emission InGaN light-emitting diode.” 2016. Web. 17 Feb 2020.

Vancouver:

冯聪; Feng C. Phosphor-free polychromatic emission InGaN light-emitting diode. [Internet] [Doctoral dissertation]. University of Hong Kong; 2016. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10722/235877.

Council of Science Editors:

冯聪; Feng C. Phosphor-free polychromatic emission InGaN light-emitting diode. [Doctoral Dissertation]. University of Hong Kong; 2016. Available from: http://hdl.handle.net/10722/235877

University of Hong Kong

20. Cheung, Wing-shing. Geometrical design and measurement of light-emitting diode for lighting.

Degree: M. Phil., 2015, University of Hong Kong

URL: Cheung, W. [章永聖]. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5699952 ; http://hdl.handle.net/10722/223017

►

Year 2014 is a milestone in the history of LEDs industry. Isamu Akasaki, Hiroshi Amano and Shuji Nakamura were awarded the Nobel Prize in Physics… (more)

▼

Year 2014 is a milestone in the history of LEDs industry. Isamu Akasaki, Hiroshi Amano and Shuji Nakamura were awarded the Nobel Prize in Physics 2014 for their contribution in the application of “bright and energy-saving white light sources” with invention of efficient blue indium gallium nitrate (InGaN) light-emitting diodes (LED) [1]. This can be treated as an admission of the impotence of LED lighting in the modern human civilization. Although the LED- related technologies had been well developed, there are still plenty room for improvement. Normally, size of an InGaN die is in dimensions of micrometers while the sizes of LED lamps are usually hundred times larger. Regardless of the purpose on better appearance, one of the main reasons behind this phenomenon is to change the property of the emitted light to fulfill the specific requirements for different usage. External components, including diffusers, silicone encapsulant, drivers, etc…., are common parts can be found in LED products. These components will, in facts, degrade the performance of the LEDs in aspects of optical and thermal performance. In another word, reduction of the dependencies on additional components will help in improving LED performance. Performance of LEDs in different geometries had been compared by pioneers. Enhancements of light extraction efficiency by changing the geometry of LEDs had been justified [2]. Effects of geometrical design of LED chips on the characteristic of light emission are also worth to study as to eliminate the requirement of additional components. In this dissertation, stripe-like LEDs with aspect ratio of 1:20 are fabricated from InGaN/GaN on sapphire wafer with standard fabrication process. A series of measurements are carried out to study their emission properties. Traditional cubic LEDs will be fabricated from the same material as reference. Comparison of emission properties among stripe-like LEDs and traditional cubic LEDs justified the enhancement of LED performance by increasing the aspect ratio, which also justified the possibility to reduce the dependency of additional components by modification of LED chips.

published_or_final_version

Electrical and Electronic Engineering

Master

Master of Philosophy

Subjects/Keywords: Light emitting diodes

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APA (6^th Edition):

Cheung, W. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Masters Thesis). University of Hong Kong. Retrieved from Cheung, W. [章永聖]. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5699952 ; http://hdl.handle.net/10722/223017

Chicago Manual of Style (16^th Edition):

Cheung, Wing-shing. “Geometrical design and measurement of light-emitting diode for lighting.” 2015. Masters Thesis, University of Hong Kong. Accessed February 17, 2020. Cheung, W. [章永聖]. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5699952 ; http://hdl.handle.net/10722/223017.

MLA Handbook (7^th Edition):

Cheung, Wing-shing. “Geometrical design and measurement of light-emitting diode for lighting.” 2015. Web. 17 Feb 2020.

Vancouver:

Cheung W. Geometrical design and measurement of light-emitting diode for lighting. [Internet] [Masters thesis]. University of Hong Kong; 2015. [cited 2020 Feb 17]. Available from: Cheung, W. [章永聖]. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5699952 ; http://hdl.handle.net/10722/223017.

Council of Science Editors:

Cheung W. Geometrical design and measurement of light-emitting diode for lighting. [Masters Thesis]. University of Hong Kong; 2015. Available from: Cheung, W. [章永聖]. (2015). Geometrical design and measurement of light-emitting diode for lighting. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b5699952 ; http://hdl.handle.net/10722/223017

University of Hong Kong

21. Zhu, Ling. Manipulating optical emission from light-emitting diodes and their applications.

Degree: PhD, 2011, University of Hong Kong

URL: Zhu, L. [朱玲]. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4729746 ; http://dx.doi.org/10.5353/th_b4729746 ; http://hdl.handle.net/10722/146150

► Material properties, coupled with typical device structures of GaN-based light-emitting diode (LED) wafer give rise to Lambertian emission patterns with large beam divergence. However, this… (more)

▼ Material properties, coupled with typical device structures of GaN-based light-emitting diode (LED) wafer give rise to Lambertian emission patterns with large beam divergence. However, this pattern may not be useful or beneficial to many applications. In some specific applications, such as spot lighting or light sources for fiber coupling, emission with narrow beam divergence is required, whereas in general lighting such as the street lamps and indoor lighting, a diffused light source rather than a point source is needed. By manipulating the optical emission of LEDs at the chip level, some performance metrics of LEDs can be enhanced and their applications can be extended into new fields rather than merely for lighting. Additionally, the need for external optics can be eliminated, thereby increasing the flexibility of design. In this thesis, five implementations are reported to achieve emission control, namely chip design, optics design, package design and system design, which are ordered according to the LED fabrication process flow. Manipulation of optical emission can be observed by comparing the proposed devices with the conventional devices, or the successful demonstration of a new application. By chip shaping via laser micromachining, a three-dimensional truncated-conic LED (TC-LED) is proposed to cut off efficiently lateral emissions from the LED sidewall, thus enhancing color uniformity from its top quantum-dot coated surface. The optical properties of TC-LED are investigated: the beam divergence is reduced by 32o and the power in the normal direction is enhanced by 21.7%. After applying quantum dots to achieve white-light emission, the top emission color uniformity is improved by 37%. By including optics on the chip level, beam divergence can be narrowed down. The hemispherical lens LED (HL-LED) with directional beam is proposed, achieving a 53.8% enhancement of fiber coupling efficiency. On top of a flip-chip-packaged TC-LED, a hemispherical BK-7 lens is capillary-bonded onto the sapphire surface. Compared with TC-LED, the divergence of HL-LED is significantly reduced by 50o. Vertically-mounted LED (vmLED) is proposed to broaden the emission pattern at the packaging level. By mounting the LED die upright to expose two large illumination surfaces instead of the traditional way of bonding the die flat down, the optical emission pattern is converted from Lambertian to a two-lobed pattern. Both the optical properties and thermal properties are investigated and it is found that there is a trade-off between the heat dissipation and light output. A sapphire-prism-mounted vmLED is further proposed to improve the heat sinking. In the last two chapters, micro-LED arrays with smaller illuminated active regions are introduced and the combination with external optics, including optical fibers and projection lens sets are used to demonstrate novel LED applications. By coupling a bi-linear micro-LED array into a fiber bundle, a portable microdisplay system is demonstrated and this comprehensive system can be used for… Advisors/Committee Members: Choi, HW, Lai, PT.

Subjects/Keywords: Light emitting diodes.

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APA (6^th Edition):

Zhu, L. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Doctoral Dissertation). University of Hong Kong. Retrieved from Zhu, L. [朱玲]. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4729746 ; http://dx.doi.org/10.5353/th_b4729746 ; http://hdl.handle.net/10722/146150

Chicago Manual of Style (16^th Edition):

Zhu, Ling. “Manipulating optical emission from light-emitting diodes and their applications.” 2011. Doctoral Dissertation, University of Hong Kong. Accessed February 17, 2020. Zhu, L. [朱玲]. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4729746 ; http://dx.doi.org/10.5353/th_b4729746 ; http://hdl.handle.net/10722/146150.

MLA Handbook (7^th Edition):

Zhu, Ling. “Manipulating optical emission from light-emitting diodes and their applications.” 2011. Web. 17 Feb 2020.

Vancouver:

Zhu L. Manipulating optical emission from light-emitting diodes and their applications. [Internet] [Doctoral dissertation]. University of Hong Kong; 2011. [cited 2020 Feb 17]. Available from: Zhu, L. [朱玲]. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4729746 ; http://dx.doi.org/10.5353/th_b4729746 ; http://hdl.handle.net/10722/146150.

Council of Science Editors:

Zhu L. Manipulating optical emission from light-emitting diodes and their applications. [Doctoral Dissertation]. University of Hong Kong; 2011. Available from: Zhu, L. [朱玲]. (2011). Manipulating optical emission from light-emitting diodes and their applications. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b4729746 ; http://dx.doi.org/10.5353/th_b4729746 ; http://hdl.handle.net/10722/146150

University of Illinois – Urbana-Champaign

22. Arnold, Jennifer. Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.

Degree: PhD, 0325, 2013, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/42146

► The actin cytoskeleton is a critical part of intracellular structure, responsible for the general shape and integrity of all cells. New insights into the dynamic… (more)

▼ The actin cytoskeleton is a critical part of intracellular structure, responsible for the general shape and integrity of all cells. New insights into the dynamic nature of the cytoskeleton describe additional roles for actin, including synaptic plasticity in the hippocampus, regulation of hormone release in endocrine cells, and as a signaling component involved in transcription. My research focused on the hypothesis that changes in actin state contribute to light-induced changes in the state of the circadian clock in the mammalian brain. In early night, the cells of the mammalian circadian clock, in the SCN, initiate a series of signaling events to translate environmental light into transcriptional changes which induce a delay of clock state. This signaling pathway, mediated by glutamate, involves activation of NMDA receptors, nitric oxide synthesis, and opening of ryanodine receptors with subsequent influx of calcium from intracellular stores. Activation of this cascade results in up-regulation of the clock genes, Period 1 and Period 2. This induction is mediated in part via CRE elements, through activation of the transcription factor, CREB. Connecting upstream signaling processes with the end result of transcriptional changes was a target of this study. Based on responses to glutamate in vitro, I hypothesized that activation of the early night light signaling pathway results in a rapid and transient decrease in actin polymerization, which is required for the phase delay to occur. I first characterized actin state around a day-night cycle, in order to determine whether sensitivity to actin depolymerization changes over this period. To this end, I showed that polymerized actin peaks in early night, but this oscillation in actin state is abolished in mice rendered genetically arrhythmic, the BMAL1 -/- mice. Secondly, I measured actin state after light exposure, and found that brief light pulses induced a breakdown of polymerized actin. By injecting the actin-stabilizing chemical jasplakinolide directly into the mouse SCN, I demonstrated a requirement for actin breakdown in mediating the phase delay, while conversely I induced a delay by injecting the actin depolymerzing agent latrunculin A. Thirdly, I measured induction of potential downstream effectors upon actin depolymerization, to analyze the effect of actin dynamics on transcription. Breaking down the cytoskeleton with latrunculin A resulted in activation of the MAP kinase component PERK, as well as a potential activation of PCREB. The importance of actin dynamics on CRE-mediated transcription was demonstrated using electrophysiological recordings, in which inhibition of CRE-mediated transcription abolished the effects of latrunculin A on clock state. Finally, I showed that actin depolymerization induced the clock gene Period 2, providing a potential link between cytoplasmic signaling events that facilitate actin remodeling and nuclear mechanisms of transcription. This work, together with previous in vitro studies, places actin dynamics firmly… Advisors/Committee Members: Gillette, Martha U. (advisor), Gillette, Martha U. (Committee Chair), Gillette, Rhanor (committee member), Roy, Edward J. (committee member), Raetzman, Lori T. (committee member), Brieher, William M. (committee member).

Subjects/Keywords: circadian; Actin; light

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APA (6^th Edition):

Arnold, J. (2013). Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/42146

Chicago Manual of Style (16^th Edition):

Arnold, Jennifer. “Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.” 2013. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed February 17, 2020. http://hdl.handle.net/2142/42146.

MLA Handbook (7^th Edition):

Arnold, Jennifer. “Actin's role in signaling light-induced phase shifts in the mammalian circadian clock.” 2013. Web. 17 Feb 2020.

Vancouver:

Arnold J. Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2013. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/2142/42146.

Council of Science Editors:

Arnold J. Actin's role in signaling light-induced phase shifts in the mammalian circadian clock. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/42146

University of Missouri – Columbia

23. Leigh, Morgan Brittany. Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers.

Degree: 2016, University of Missouri – Columbia

URL: http://hdl.handle.net/10355/56416

► [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Lighting is essential for broiler growth, maturation, and reproduction. Globally, broilers are reared under various… (more)

▼ [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Lighting is essential for broiler growth, maturation, and reproduction. Globally, broilers are reared under various production systems including outdoor enclosures that do not allow for extensive control over their environment. However, in the United States large homogenous houses with extensive control over environmental factors including light source, intensity, photoperiod, and wavelength are used for achieving productivity goals. Improving these management practices is essential to improving production efficiency in commercial operations since the sole means of lighting for broilers is artificial. Traditionally incandescent lighting has been used as the standard throughout the industry. However, these bulbs are inefficient and costly due to their short lifespan. Compact fluorescent lighting has also been used, but can be disruptive to broilers. Therefore, new LED has become available to be utilized in this commercial setting. Using this technology would cut cost for the producer and could also have some advantageous effects for the broiler. Previous research has shown increased growth and performance of broilers under different wavelengths of LED light but it is unclear which light source would be the most advantageous. Two floor pen trials were conducted to determine the effects of using a standard white LED technology to the traditional incandescent and fluorescent, as well as, wavelengths of blue, green, and red light. Lights were kept at a standard 16 hour light and 8 hour dark cycle. Treatments for the first trial consisted of an incandescent, fluorescent, white LED, blue LED, and green LED, and combination of green and blue LED light. Each were set at 10 lux intensity and reduced to 5 lux at 28 days. No statistical differences were observed between treatments for production parameters during the evaluated 17, 35, and 49 day periods. Therefore, it was concluded white LED could be used and produce the same results compared to traditional lighting options. A similar second trial was conducted to determine the effects of using a standard white LED in comparison to LED bulbs of blue, green, and red wavelengths. Treatments consisted of a white LED, blue LED, green LED, and red LED. Each were set at 10 lux intensity and reduced to 5 lux at 28 days. Lights were kept at a standard cycle of 16 hours light and 8 hours dark. While differences were overserved for carcass composition data at 50 days of age for minor breast and wing yield between the varying wavelengths of light, none of these wavelengths had a greater effect on performance when compared to the white LED. Therefore it is concluded that white LED lighting should be the standard across the broiler industry. Its utilization will allow producers to reduce their cost of production without cutting into their profits from production. Advisors/Committee Members: Firman, Jeffre D. (advisor).

Subjects/Keywords: Light emitting diodes

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APA (6^th Edition):

Leigh, M. B. (2016). Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers. (Thesis). University of Missouri – Columbia. Retrieved from http://hdl.handle.net/10355/56416

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):

Leigh, Morgan Brittany. “Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers.” 2016. Thesis, University of Missouri – Columbia. Accessed February 17, 2020. http://hdl.handle.net/10355/56416.

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

MLA Handbook (7^th Edition):

Leigh, Morgan Brittany. “Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers.” 2016. Web. 17 Feb 2020.

Vancouver:

Leigh MB. Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers. [Internet] [Thesis]. University of Missouri – Columbia; 2016. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/10355/56416.

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

Council of Science Editors:

Leigh MB. Efficacy of various wavelengths of light emitting diode illumination on efficiency and performance parameters of broilers. [Thesis]. University of Missouri – Columbia; 2016. Available from: http://hdl.handle.net/10355/56416

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

24. Lee, Julia Seungmi. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.

Degree: School of Engineering, 2018, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:792773/

► Cellular viability represents whether a cell is performing normal functions, relating to intracellular energy synthesis. Accurately quantifying the cellular viability would facilitate novel studies on… (more)

▼ Cellular viability represents whether a cell is performing normal functions, relating to intracellular energy synthesis. Accurately quantifying the cellular viability would facilitate novel studies on how pathological environments affect the functioning of cells in various diseases. Nevertheless, technologies for monitoring the cellular viability in live tissue models are currently lacking. This study aims at testing a recently developed technology, which integrates dynamic light scattering and optical coherence tomography (called DLS-OCT), to image the cellular viability with single-cell resolution. DLS analyzes fluctuations in light scattered by particles to measure diffusion or flow of the particles, and OCT uses coherence gating to collect light only scattered from a small volume for high-resolution structural imaging. Integrating the two technologies, DLS-OCT constructs high-resolution diffusion coefficient and flow velocity 3D maps. It is known that the motion of intracellular organelles, often called intracellular motility, resembles a random walk in the confined cytoplasm space, thus it can be quantified by the diffusion coefficient. Since the intracellular motility is correlated with the cell’s metabolism level, the diffusion coefficient map of DLS-OCT is expected to enable us to image the cellular viability. Here, the DLS-OCT imaging of cellular viability was validated by characterizing responses of the measured intracellular motility to the environmental conditions such as the temperature and pH, in animal retinal explant samples. First, we characterized our new OCT system and optimized scanning sequences and processing procedures for DLS-OCT data, to match the dynamic range of our DLS-OCT measurement with the typical range of intracellular motility. Both numerical simulation and phantom experiments were performed for optimization. Second, methods required for animal retinal explant experiments were established, and DLS-OCT data from retinal tissue while manipulating the cellular viability were acquired and analyzed, to test the technical hypothesis that DLS-OCT-measured intracellular motility of neurons significantly diminishes when the cellular viability levels are out of the physiological ranges. Similar operations were performed to tissue spheroids with additional morphological measurements. As a result, we measured individual cells’ healthiness for tempered conditions, which will enlighten studying cells’ healthiness during disease progress or therapeutic treatment in stroke, epilepsy, and Alzheimer’s disease among others. Advisors/Committee Members: Lee, Jonghwan (Advisor), Powers, Thomas (Reader), Hoffman-Kim, Diane (Reader).

Subjects/Keywords: Dynamic Light Scattering

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APA (6^th Edition):

Lee, J. S. (2018). Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:792773/

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):

Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.” 2018. Thesis, Brown University. Accessed February 17, 2020. https://repository.library.brown.edu/studio/item/bdr:792773/.

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

MLA Handbook (7^th Edition):

Lee, Julia Seungmi. “Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography.” 2018. Web. 17 Feb 2020.

Vancouver:

Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. [Internet] [Thesis]. Brown University; 2018. [cited 2020 Feb 17]. Available from: https://repository.library.brown.edu/studio/item/bdr:792773/.

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

Council of Science Editors:

Lee JS. Cellular Viability Imaging Using Dynamic Light Scattering Optical Coherence Tomography. [Thesis]. Brown University; 2018. Available from: https://repository.library.brown.edu/studio/item/bdr:792773/

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

Rice University

25. Li, Yang. Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.

Degree: MS, Natural Sciences, 2012, Rice University

URL: http://hdl.handle.net/1911/77330

► The interaction of light with small designed particles and structures gives rise to an increasing number of phenomena of potentially dramatic technological importance, such as… (more)

▼ The interaction of light with small designed particles and structures gives rise to an increasing number of phenomena of potentially dramatic technological importance, such as metamaterials, superlens focusing, and enhanced spectroscopy. Metallic nanostructures with their geometry-dependent optical resonances are a topic of intense current interest due to their ability to manipulate light in ways not possible with conventional optical materials. A particularly fascinating aspect of these systems is the recently realized possibility of creating optical frequency “magnetic plasmon” responses of comparable magnitude to the “electric plasmon” response. Au nanocups at their magnetoinductive resonance have the unique ability to redirect scattered light in a direction dependent on cup orientation, as a true three-dimensional nanoantenna. As optical frequency nanoantennas, reduced-symmetry plasmonic nanoparticles have light-scattering properties that depend strongly on geometry, orientation, and variations in dielectric environment. Here we investigate how these factors influence the spectral and angular dependence of light scattered by Au nanocups. A simple dielectric substrate causes the axial, electric dipole mode of the nanocup to deviate substantially from its characteristic cos square free space scattering profile, while the transverse, magnetic dipole mode remains remarkably insensitive to the presence of the substrate. Nanoscale irregularities of the nanocup rim and the local substrate permittivity have a surprisingly large effect on the spectral- and angle-dependent light-scattering properties of these structures. The different angular scattering and wavelength response from the axial and transverse nanocup modes make the nanocup an interesting particle for the nanoscale manipulation of light in three dimensions. The sensitivity of this system to geometric and environmental factors may present opportunities for active, substrate-mediated control of light scattering. Advisors/Committee Members: Nordlander, Peter J. (advisor), Halas, Naomi J. (committee member), Link, Stephan (committee member).

Subjects/Keywords: Nanocup; Light-bending

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APA (6^th Edition):

Li, Y. (2012). Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/77330

Chicago Manual of Style (16^th Edition):

Li, Yang. “Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.” 2012. Masters Thesis, Rice University. Accessed February 17, 2020. http://hdl.handle.net/1911/77330.

MLA Handbook (7^th Edition):

Li, Yang. “Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups.” 2012. Web. 17 Feb 2020.

Vancouver:

Li Y. Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. [Internet] [Masters thesis]. Rice University; 2012. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/1911/77330.

Council of Science Editors:

Li Y. Angle- and Spectral-Dependent Light Scattering from Plasmonic Nanocups. [Masters Thesis]. Rice University; 2012. Available from: http://hdl.handle.net/1911/77330

Addis Ababa University

26. Misrak, Getahun. Three-Level Laser Dynamics with Coherent and Squeezed Light .

Degree: 2012, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/1257

► We study the squeezing and statistical properties of the light produced by a three-level laser whose cavity contains a parametric amplifier and with the cavity… (more)

Subjects/Keywords: Dynamics; Squeezed Light

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APA (6^th Edition):

Misrak, G. (2012). Three-Level Laser Dynamics with Coherent and Squeezed Light . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/1257

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):

Misrak, Getahun. “Three-Level Laser Dynamics with Coherent and Squeezed Light .” 2012. Thesis, Addis Ababa University. Accessed February 17, 2020. http://etd.aau.edu.et/dspace/handle/123456789/1257.

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

MLA Handbook (7^th Edition):

Misrak, Getahun. “Three-Level Laser Dynamics with Coherent and Squeezed Light .” 2012. Web. 17 Feb 2020.

Vancouver:

Misrak G. Three-Level Laser Dynamics with Coherent and Squeezed Light . [Internet] [Thesis]. Addis Ababa University; 2012. [cited 2020 Feb 17]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1257.

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

Council of Science Editors:

Misrak G. Three-Level Laser Dynamics with Coherent and Squeezed Light . [Thesis]. Addis Ababa University; 2012. Available from: http://etd.aau.edu.et/dspace/handle/123456789/1257

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

The Ohio State University

27. Lindholm, Kevin R. Looking For Light.

Degree: MFA, Art, 2010, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1276670352

► In my search for the way light can dictate the overall expression of an image, I have found that light is the means that activates… (more)

Subjects/Keywords: Art Education; Light

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APA (6^th Edition):

Lindholm, K. R. (2010). Looking For Light. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1276670352

Chicago Manual of Style (16^th Edition):

Lindholm, Kevin R. “Looking For Light.” 2010. Masters Thesis, The Ohio State University. Accessed February 17, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1276670352.

MLA Handbook (7^th Edition):

Lindholm, Kevin R. “Looking For Light.” 2010. Web. 17 Feb 2020.

Vancouver:

Lindholm KR. Looking For Light. [Internet] [Masters thesis]. The Ohio State University; 2010. [cited 2020 Feb 17]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1276670352.

Council of Science Editors:

Lindholm KR. Looking For Light. [Masters Thesis]. The Ohio State University; 2010. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1276670352

NSYSU

28. Wang, Chien-Hsiung. The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.

Degree: Master, Electro-Optical Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353

► We have fabricated a high brightness and color purity white light organic light emitting diode based on a multi-emission-layer. There were several methods to achieve… (more)

▼ We have fabricated a high brightness and color purity white light organic light emitting diode based on a multi-emission-layer. There were several methods to achieve white light OLEDs, including multi-emission- layer device, single emission layer device, and so on. We use RGB triple -emission-layer device to obtain white light, because its EL spectrum is broader than that of the dual-emission-layer device. Frequent problems that showed be faced in a multi-layer structure are the complicate device structure and the color various with different operation voltage. Our work includes five parts. First, we optimized the red light device by controlling the concentration of DCJTB with the configuration of ITO/NPB/Alq3: DCJTB/Alq3/LiF/Al. Second, we optimized the blue light device by controlling the concentration of TC-1753 based on a device structure of ITO/ NPB/ TC-1558: TC-1753/ Alq3/ LiF/ Al. Third, we fabricated green light device by using TPB3 as an emission layer with the configuration of ITO/NPB/TPB3/Alq3/LiF/Al. Then we optimized the dual-emission-layer white light OLED by adjusting the thickness of blue and red emission layers. Finally, we added a green emission layer into the dual emission layer device with the device structure of ITO(1300Å)/NPB(500Å)/ TPB3(500-2xÅ)/ TC-1558(xÅ): TC-1753(2%)/ Alq3(xÅ): DCJTB(2%)/ Alq3(350Å)/ LiF(8Å)/Al(2000Å). By controlling the thickness of each emission layer, a stable white OLED was achieved. The thickness of emission layer were TPB3(200Å)/ TC-1558(150Å):TC-1753(2%)/ Alq3(150Å):DCJTB(2%). The maximum luminance reached 48200 cd/m2 at 13.5V, the maximum current efficiency and power efficiency were 4.06 cd/A at 13V and 1.9 lm/W at 20mA/cm2, respectively. The CIE coordinate varied from (0.339, 0.317) to (0.339, 0.327) with an applied voltage from 9V to 13.5V. We have overcome the problem of instable color purity which was the critical disadvantage of multi-emission-layer white light OLEDs. Our study performed a high brightness and color purity white light device. Advisors/Committee Members: Mei-Ying Chang (committee member), Chih-Chien Lee (chair), Jui-Ming Yeh (chair), Wen-Yao Huang (chair), Yu-Kai Han (chair), Ping-Tsung Huang (chair).

Subjects/Keywords: OLED; white light

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

APA (6^th Edition):

Wang, C. (2008). The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353

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, Chien-Hsiung. “The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.” 2008. Thesis, NSYSU. Accessed February 17, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353.

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, Chien-Hsiung. “The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes.” 2008. Web. 17 Feb 2020.

Vancouver:

Wang C. The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. [Internet] [Thesis]. NSYSU; 2008. [cited 2020 Feb 17]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353.

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

Council of Science Editors:

Wang C. The Study of High Brightness and Color Purity White light Organic Light-Emitting Diodes. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0721108-155353

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

NSYSU

29. Huang, Yu-Syuan. Nonlinear Volterra Filter in Visible Light Communication.

Degree: Master, Electro-Optical Engineering, 2014, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053

► This thesis discusses the channel effects of a visible light communication system on signal performance, when carrier-less amplitude phase (CAP) or orthogonal frequency-division multiplexing (OFDM)… (more)

Subjects/Keywords: Visible Light Communication

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APA (6^th Edition):

Huang, Y. (2014). Nonlinear Volterra Filter in Visible Light Communication. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053

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):

Huang, Yu-Syuan. “Nonlinear Volterra Filter in Visible Light Communication.” 2014. Thesis, NSYSU. Accessed February 17, 2020. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053.

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

MLA Handbook (7^th Edition):

Huang, Yu-Syuan. “Nonlinear Volterra Filter in Visible Light Communication.” 2014. Web. 17 Feb 2020.

Vancouver:

Huang Y. Nonlinear Volterra Filter in Visible Light Communication. [Internet] [Thesis]. NSYSU; 2014. [cited 2020 Feb 17]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053.

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

Council of Science Editors:

Huang Y. Nonlinear Volterra Filter in Visible Light Communication. [Thesis]. NSYSU; 2014. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0830114-141053

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

University of Victoria

30. Novales Flamarique, Inĩgo. Vertebrate detection of polarized light.

Degree: Department of Biology, 2017, University of Victoria

URL: http://hdl.handle.net/1828/8135

► In addition to intensity and colour, the retinas of many invertebrates are capable of light detection based on its linear polarization (Wehner, 1983). The detection… (more)

▼ In addition to intensity and colour, the retinas of many invertebrates are capable of light detection based on its linear polarization (Wehner, 1983). The detection mechanism permitting this capability is based on the intrinsic dichroism of chromophores oriented along rhabdomeric microvilli. In vertebrates, however, except for anchovies (Fineran & Nicol, 1978), such axial dichroism is absent rendering vertebrate outer segments insensitive to the polarization of axially incident light. Nonetheless, there is evidence for polarization sensitivity in a few species of fish (goldfish, rainbow trout and sunfish). But the findings for goldfish and rainbow trout appear contradictory to those for the green sunfish (Parkyn & Hawryshyn, 1993), and a detection mechanism that could explain polarization sensitivity for lower vertebrates in general is unknown. This thesis was undertaken to try to solve some of these unknowns by investigating: 1) the neural polarization signal, at the level of the optic nerve, in fish species from four groups with distinct retinal cone mosaics (rainbow trout, green and pumpkinseed sunfishes, common white sucker, and northern anchovy), 2) the ultrastructure and light transmission properties of different cone types (single, twin and double cones) , and 3) the characteristics of the underwater polarized light field that could permit the observed laboratory behaviours in nature. I measured compound action potential (CAP) responses from the optic nerve of live anaesthetized fish to evaluate the possibility that a fish could detect the orientation of the electric field of linearly polarized light (mathematically-designated as the E-vector) . Results from these studies showed that rainbow trout and the northern anchovy were polarization-sensitive, but both species of sunfish and the common white sucker were not. In addition, CAP measurements conducted with rainbow trout exposed to light stimuli of varying polarization percentages showed, in conjunction with underwater polarized light measurements, that the use of polarized light in this animal was restricted to crepuscular time periods. To try to understand why some fish species were polarization-sensitive and others were not, I carried out microscopy studies of retinal cones. Optical measurements of transmitted polarized light through the length of cones showed: 1) small cone birefringence (retardance < 2nm) , and 2) preferential transmission of polarized light that was parallel to the partition dividing twin and double cones (single cones were isotropic). In addition, histological studies showed that the partition in trout double cones was tilted with respect to the vertical while that of twin cones in sunfish was straight. We envisioned that the higher index of refraction of the partition with respect to the surrounding cell cytoplasm would make it behave as a mirror, reflecting and polarizing incident light. A large optical model was built to test this idea consisting of two photodiodes evenly spaced on… Advisors/Committee Members: Hawryshyn, Craig W. (supervisor).

Subjects/Keywords: Fishes; Light; Vertebrates

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APA (6^th Edition):

Novales Flamarique, I. (2017). Vertebrate detection of polarized light. (Thesis). University of Victoria. Retrieved from http://hdl.handle.net/1828/8135

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):

Novales Flamarique, Inĩgo. “Vertebrate detection of polarized light.” 2017. Thesis, University of Victoria. Accessed February 17, 2020. http://hdl.handle.net/1828/8135.

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

MLA Handbook (7^th Edition):

Novales Flamarique, Inĩgo. “Vertebrate detection of polarized light.” 2017. Web. 17 Feb 2020.

Vancouver:

Novales Flamarique I. Vertebrate detection of polarized light. [Internet] [Thesis]. University of Victoria; 2017. [cited 2020 Feb 17]. Available from: http://hdl.handle.net/1828/8135.

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

Council of Science Editors:

Novales Flamarique I. Vertebrate detection of polarized light. [Thesis]. University of Victoria; 2017. Available from: http://hdl.handle.net/1828/8135

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

Open Access Theses and Dissertations