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Relevant bibliographies by topics / NPS

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Academic literature on the topic 'NPS'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 March 2023

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Journal articles on the topic "NPS"

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Escribano, José Luis González. "NPs as just NPs." Language Sciences 28, no. 6 (November 2006): 529–79. http://dx.doi.org/10.1016/j.langsci.2005.06.003.

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Jacobsen, Dag. "NPS." Clinical Toxicology 52, no. 3 (February 28, 2014): 237. http://dx.doi.org/10.3109/15563650.2014.892606.

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Gallan, Mary Eileen. "NPs." Nurse Practitioner 13, no. 8 (August 1988): 10. http://dx.doi.org/10.1097/00006205-198808000-00004.

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&NA;. "NPs." Nurse Practitioner 24, no. 6 (June 1999): 105–7. http://dx.doi.org/10.1097/00006205-199906000-00011.

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&NA;. "NPs." Nurse Practitioner 24, no. 6 (June 1999): 105–7. http://dx.doi.org/10.1097/00006205-199924060-00011.

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Bottinelli, C., K. Revelut, Y. Gaillard, and F. Bévalot. "NPS collector." Toxicologie Analytique et Clinique 30, no. 2 (June 2018): S40. http://dx.doi.org/10.1016/j.toxac.2018.04.046.

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&NA;. "HOSPITAL NPs." Nursing 27, no. 6 (June 1997): 12–13. http://dx.doi.org/10.1097/00152193-199706000-00009.

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Clark, Kim, Lauren Johnson, Helene Nguyen, and Laura Salcido. "EMPOWERING NPS." AJN, American Journal of Nursing 108, no. 9 (September 2008): 13. http://dx.doi.org/10.1097/01.naj.0000334959.83321.f5.

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Doggrell, S. A., M. del Fresno, and J. Castañer. "NPS-2143." Drugs of the Future 27, no. 2 (2002): 140. http://dx.doi.org/10.1358/dof.2002.027.02.656406.

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Buppert, Carolyn. "How Far NPs Have Come; Where NPs Are Going." Journal for Nurse Practitioners 10, no. 7 (July 2014): 515–16. http://dx.doi.org/10.1016/j.nurpra.2014.04.020.

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Dissertations / Theses on the topic "NPS"

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Mortensen, Cody K. "NPS-SCAT communications system : design, test, and integration of NPS' first CUBESAT." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5107.

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Courtney, Dale Michael. "Internetworking : NPS ATM LAN /." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1996. http://handle.dtic.mil/100.2/ADA319479.

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Thesis (M.S. in Information Technology Management) Naval Postgraduate School, September 1996.
Thesis advisor(s): D.P. Brutzman and R. Buddenberg. "September 1996." Includes bibliographical references (p. 109-115). Also available online.

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Forte, Jeffrey E. "The NPS Locator system." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1997. http://handle.dtic.mil/100.2/ADA341393.

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Thesis (M.S. in Computer Science and M.S. in Information Technology Management) Naval Postgraduate School, December 1997.
"December 1997." Thesis advisor(s): James C. Emery, C. Thomas Wu. Includes bibliographical references (p. 35). Also available online.

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Turner, Christopher Gordon. "NPS TINYSCOPE program management." Thesis, Monterey, California. Naval Postgraduate School, 2010. http://hdl.handle.net/10945/5227.

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Approved for public release; distribution is unlimited
This master's thesis introduces the program management and concept of operations of the TINYSCOPE Program. TINYSCOPE is a 6U CubeSat designed as a low-cost and easily replaceable imaging spacecraft that can produce tactically relevant imagery data. Tactical requirements in this context would emphasize "good enough" image resolution with a rapid-response tasking loop and high revisit rate. The TINYSCOPE project intends to demonstrate the utility of small, risk tolerant spacecraft for tactical imagery. The program management section of the thesis discusses the relationships of cost, performance, risk, and schedule and the impact of each on the program. The program's successes and failures are examined to glean lessons for future program managers of university projects. The remainder of the thesis develops a comprehensive concept of operations for the prototype spacecraft. Areas of discussion include overviews of the ground, space and launch segments of the mission architecture, and proposed conduct of operations for those segments. Finally, relevant program management and systems engineering documentation are presented as appendices.

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Brutzman, Donald P. "NPS AUV Integrated Simulation." Thesis, Monterey, Calif. : Naval Postgraduate School, 1992. http://handle.dtic.mil/100.2/ADA248120.

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Thesis (M.S. in Computer Science)--Naval Postgraduate School, March 1992.
Thesis Advisor(s): Kanayama, Yutaka ; Zyda, Michael J. "March 1992." Appendix G videotape located at VHS 5000043. Includes bibliographical references (p. 240-247). Also available in print.

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Machicao, y. Priemer Antonio. "NP-Arguments in NPs." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/20109.

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Thema der Dissertation sind Nominalphrasen im Deutschen und Spanischen. Die Dissertation ist in 5 Abschnitte unterteilt. Das erste Kapitel gibt die Motivation der Arbeit, und im letzten Kapitel werden die Ergebnisse zusammengefasst und mögliche Erweiterungen diskutiert. Im zweiten Kapitel wird eine Einführung in den theoretischen Rahmen, die Head-Driven Phrase Structure Grammar (HPSG), gegeben und mit generativen Ansätzen verglichen. Dabei werden die Grundlagen und die Beschreibungsmechanismen der Theorie erklärt. HPSG ist ein oberflächenorientiertes, deklaratives, beschränkungsbasiertes Framework. Im dritten Kapitel werden vier zentrale syntaktische Begriffe besprochen und diskutiert: Kopf, Argument, Adjunkt und Spezifikator. Trotz ihrer Relevanz in der linguistischen Literatur werden diese vier Relationen verschieden interpretiert. Bei der Diskussion dieser syntaktischen Hauptrelationen werden die entsprechenden HPSG Mechanismen erklärt, mit denen sie beschrieben werden, u.a. das Semantik-Prinzip und das Kopfmerkmalsprinzip. Das vierte Kapitel der Dissertation beinhaltet Analysen für drei verschiedene Phänomene der NPs im Deutschen und Spanischen: Kasusmarkierung, optionale Argumente und pränominale Argumente. Deutsch und Spanisch unterscheiden sich in der Art und Weise, wie sie Kasus an ihren NPs markieren. Deutsch markiert sie morphologisch und Spanisch syntaktisch. Beide Arten der Markierung werden modelliert und verglichen. In Bezug auf die Optionalität von Argumenten wird zunächst die verbale Domäne betrachtet. Anhand dieser Analyse wird dann die nominale Domäne modelliert. Im letzten Teil wird eine Analyse für die pränominalen Argumente gegeben. Dabei werden folgende Aspekte betrachtet: Kombinatorik verschiedener Argumente, Theta-Rollenvergabe für die Argumente, Fakultativität der Argumente und Behandlung der (In-)Definitheit bei pränominalen Genitiven.
The topic of this dissertation are noun phrases in German and Spanish. This thesis is divided into five chapters. The first chapter presents the motivation of the work, and in the last chapter a summary is presented and discussed. In the second chapter, I give an introduction into the theoretical framework, Head-Driven Phase Structure Grammar (HPSG) by explaining its fundamental mechanisms, and compare it to generative approaches. HPSG is a surface oriented, declarative, constraint-based framework. In the third chapter, four central syntactic concepts are critically discussed: head, argument, adjunct, and specifier. Although these four concepts are highly relevant in the linguistic literature, they are often interpreted differently. While discussing these fours syntactic relations, I explain the main mechanisms of HPSG to describe them, e.g. the Semantic Principle and the Head Feature Principle. The fourth chapter contains analyses for three different NP phenomena in German and Spanish: case marking, optionality of arguments, and prenominal arguments. German and Spanish differ in the way they mark case on their NPs. German case-marks NPs morphologically, while case marking in Spanish is syntactic. Both types of marking are modelled and compared. Regarding argument optionality, I first look at the verbal domain and use this analysis to model optionality in the nominal domain. The last part of this chapter gives an analysis of prenominal arguments. The following aspects are considered: combinatory of a head noun with different arguments, theta role assignment for the arguments of a nominal head, optionality of arguments and treatment of (in-)definiteness in prenominal genitives.

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Bein, Alexander L. "NPS-SCAT (Solar Cell Array Tester), the construction of NPS' first prototype Cubesat." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Sept/08Sep%5FBein.pdf.

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Thesis (M.S. in Space Systems Operations)--Naval Postgraduate School, September 2008.
Thesis Advisor(s): Newman, James H. "September 2008." Description based on title screen as viewed on November 03, 2008. Includes bibliographical references (p. 75-77). Also available in print.

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Bolster, Richard D., and Thomas E. Halwachs. "Analyzing NPS scheduling using OSIRIS." Thesis, Monterey, California: Naval Postgraduate School, 1993. http://hdl.handle.net/10945/24120.

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Harris, Anthony D. "NPS CubeSat Launcher-lite sequence." Thesis, Monterey, Calif. : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Jun/09Jun%5FHarris.pdf.

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Thesis (M.S. in Space Systems Operations)--Naval Postgraduate School, June 2009.
Thesis Advisor(s): Newman, James H. "June 2009." Description based on title screen as viewed on July 10, 2009. Author(s) subject terms: NPSCuL, NPSCuL-Lite, P-POD, Sequencer, Launcher, Launch Vehicle, Microcontroller, Space, Satellite. Includes bibliographical references (p. 167-168). Also available in print.

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Dorn, Lawrence Tyrone. "NPS-SCAT electrical power system." Thesis, Monterey, California : Naval Postgraduate School, 2009. http://edocs.nps.edu/npspubs/scholarly/theses/2009/Sep/09Sep_Dorn.pdf.

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Thesis (M.S. in Space Systems Operations)--Naval Postgraduate School, September 2009.
Thesis Advisor(s): Newman, James H. "September 2009." Description based on title screen as viewed on November 5, 2009. Author(s) subject terms: Satellite, CubeSat, NPS-SCAT, solar cell tester, Power system, Clyde Space, Spectrolabs, improved triple junction, solar power. Includes bibliographical references (p. 83-85). Also available in print.

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Books on the topic "NPS"

1

United States. National Park Service. Office of Strategic Planning. NPS strategic planning. [Denver, Colo.] (PO Box 25287 WASO-STP, Denver 80225): The Service, 1992.

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Bailey, Michael P. The NPS Platform Foundation. Monterey, Calif: Naval Postgraduate School, 1994.

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United States. National Park Service. Denver Service Center, ed. NPS trails management handbook. Denver]: U.S. Dept. of the Interior, National Park Service, Denver Service Center, 1988.

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United States. National Park Service. Curatorial Services, ed. NPS natural history collections. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service, Curatorial Services Division, 1988.

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Hooper, Lennon. NPS trails management handbook. [Denver, CO]: U.S. Dept. of the Interior, National Park Service, Denver Service Center, 1988.

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Brutzman, Donald P. NPS AUV Integrated Simulation. Monterey, Calif: Naval Postgraduate School, 1992.

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Forte, Jeffrey E. The NPS Locator system. Monterey, Calif: Naval Postgraduate School, 1997.

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United States. National Park Service. Curatorial Services., ed. NPS natural history collections. [Washington, D.C.?]: U.S. Dept. of the Interior, National Park Service, Curatorial Services Division, 1988.

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Bolster, Richard D. Analyzing NPS scheduling using OSIRIS. Monterey, Calif: Naval Postgraduate School, 1993.

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Communications, RED Inc, and Natural Resource Program Center (U.S.). Environmental Quality Division, eds. NEPA overview and NPS mandates. [Washington, D.C: National Park Service, U.S. Dept. of the Interior, 2004.

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Book chapters on the topic "NPS"

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Kapitány-Fövény, Máté, Aviv M. Weinstein, and Zsolt Demetrovics. "NPS." In Handbook of Novel Psychoactive Substances, 21–45. New York, NY : Routledge, 2019.: Routledge, 2018. http://dx.doi.org/10.4324/9781315158082-3.

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Froehlich, Stephan J., Carlo A. Lackerbauer, Guenter Rudolph, Jan Rémi, Soheyl Noachtar, Werner J. Heppt, Annette Cryer, et al. "NPS." In Encyclopedia of Molecular Mechanisms of Disease, 1501. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_6383.

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Engelhardt, Miriam. "Bare NPs." In Research in Afroasiatic Grammar, 57–78. Amsterdam: John Benjamins Publishing Company, 2000. http://dx.doi.org/10.1075/cilt.202.04eng.

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Troć, R. "NpS: Reflectivity." In Actinide Monochalcogenides, 661–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-47043-4_120.

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Troć, R. "NpS: Mössbauer Spectroscopy." In Actinide Monochalcogenides, 655–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-47043-4_117.

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Troć, R. "NpS: Magnetic Susceptibility." In Actinide Monochalcogenides, 658–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-47043-4_118.

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Troć, R. "NpS: Electrical Resistivity." In Actinide Monochalcogenides, 660. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-47043-4_119.

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Reza Rezaie, Hamid, Hassan Beigi Rizi, Mojdeh Mahdi Rezaei Khamseh, and Andreas Öchsner. "Nanoparticles (NPs) in Dentistry." In Advanced Structured Materials, 181–99. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-48931-1_5.

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Nahler, Gerhard. "numerical pain scale (NPS)." In Dictionary of Pharmaceutical Medicine, 124. Vienna: Springer Vienna, 2009. http://dx.doi.org/10.1007/978-3-211-89836-9_946.

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Arndt, T. "Neue Psychoaktive Substanzen (NPS)." In Lexikon der Medizinischen Laboratoriumsdiagnostik, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-49054-9_2242-1.

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Conference papers on the topic "NPS"

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Agrawal, Brij N., Jae Jun Kim, Jeffrey Baker, Ty Martinez, and Bautista Fernandez. "NPS sparse aperture testbed." In UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX, edited by James B. Breckinridge, H. Philip Stahl, and Allison A. Barto. SPIE, 2019. http://dx.doi.org/10.1117/12.2528022.

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Saad, Ziad A., and Dan J. O’Rourke. "Recommissioning NPS 30 Pipeline." In 1996 1st International Pipeline Conference. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/ipc1996-1880.

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This paper will discuss all the steps taken to reclaim an 80 kilometre (50 Mile) NPS 30 (30″) pipeline loop, including the project planning, the labour requirements, the techniques utilized to complete the various stages of the project, some of the unique problems encountered, as well as, some options that were examined for hydrostatic test leak detection and water treatment. This project was a component of the Trans Mountain, Cdn $30 million, Stage II capacity expansion. This component of Stage II resulted in an increase of 3,000 m3/d (18,909 barrel/d) to the overall pipeline capacity achieving a 36,300 m3/d sustainable pipeline pumping capacity1 (230,000 barrel/d).

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Markoulidakis, Ioannis, George Kopsiaftis, Ioannis Rallis, Ioannis Georgoulas, Anastasios Doulamis, and Nikolaos Doulamis. "Confusion Matrix Analysis for NPS." In PCI 2020: 24th Pan-Hellenic Conference on Informatics. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3437120.3437305.

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Ramsay, Allan. "Generic NPs and habitual VPs." In the 14th conference. Morristown, NJ, USA: Association for Computational Linguistics, 1992. http://dx.doi.org/10.3115/992066.992104.

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Zhang, Ning, Nan Li, Bin Tian, Hao Cha, and Mo Zhou. "Study on NPS Evaporation Duct Model." In 2010 6th International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM). IEEE, 2010. http://dx.doi.org/10.1109/wicom.2010.5600958.

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Bavan, A. S. "NPS: a neural network programming system." In 1990 IJCNN International Joint Conference on Neural Networks. IEEE, 1990. http://dx.doi.org/10.1109/ijcnn.1990.137558.

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Auwärter, V., M. Sommer, J. Kaudewitz, and M. Hermanns-Clausen. "Neue Entwicklungen auf dem NpS-Markt." In Deutscher Suchtkongress 2019. Georg Thieme Verlag KG, 2019. http://dx.doi.org/10.1055/s-0039-1696209.

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Marcomini, Emilli Karine. "SÍNTESE BIOLÓGICA DE NANOPARTÍCULAS POR FUNGOS ENDOFÍTICOS." In I Congresso de Engenharia de Biotecnologia. Revista Multidisciplinar de Educação e Meio Ambiente, 2021. http://dx.doi.org/10.51189/rema/1363.

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Introdução: As Nanopartículas (NPs), estruturas com dimensões de (1–100) na escala de nanômetro, podem ser sintetizadas por diversos métodos, entre químicos, físicos e biológicos, a partir de plantas, algas, fungos, leveduras, bactérias e vírus. A síntese verde surgiu como uma alternativa promissora, crescendo interesse nas ciências biomédicas devido a suas inúmeras aplicações. Neste contexto, tem-se destacado fungos endofíticos, microrganismos que residem o interior de tecidos vegetais em uma relação simbiótica, não patogênica. Objetivo: Identificar a atividade biológica de NPs por meio de fungos endofíticos. Material e Métodos: Revisão bibliográfica realizada nas bases de dados Biblioteca Virtual em Saúde (BVS) e Web of Science (CAPES), seguindo os critérios: disponíveis gratuitamente, relacionados a temática, idioma português e inglês e publicados entre 2015 a 2021. Foram encontrados 705 estudos, dos quais cinco foram selecionados para amostra da pesquisa. Resultados: Entre as nanopartículas metálicas, as de prata são amplamente reconhecidas por suas aplicações nas áreas de agricultura, biotecnologia, saúde humana e animal. A síntese de NPs de Fusarium concolor, popularmente guaranazeiro, foi obtida por fungos endofíticos e sua caracterização foi realizada por espectroscopia de UV-Vis e Microscopia Eletrônica de Varredura (MEV), além disso, nota-se que as NPs apresentaram forte atividade antifúngica principalmente contra o fitopatógeno Coletotrichum guaranicola. Fungos endofíticos produtores de NPs foram isolados da planta Calotropis procera e identificados como Penicillium chrysogenum, Aspergillus fumigatus e Aspergillus flavus, sendo altamente eficazes contra bactérias testadas. Outra pesquisa empregou o isolado Guignardia mangiferae para síntese, no qual apresentou NPs dispersas e extremamente estáveis, com formato esférico de 5–30 nm, com atividade antibacteriana e antifúngica expressiva. Um estudo testou o fungo Penicillium polonicumina, obtendo resultados potencias para síntese verde de NPs de prata de tamanho 10-15 nm, apresentando ainda como um potente agente antibacteriano. Conclusão: Os fungos apresentam vantagens para a síntese verde de NPs, por ser ecologicamente econômicos, por produzirem compostos bioativos e por apresentarem atividades biológicas contra vários patógenos microbianos. Sugere-se a utilização das NPs biossintetizadas para controle de patógenos e doenças gerais.

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Skrybin, I., A. Kucherik, A. Osipov, and S. Kutrovskaya. "Titanium nanotubes doped NPs of noble metals." In 2018 International Conference Laser Optics (ICLO). IEEE, 2018. http://dx.doi.org/10.1109/lo.2018.8435878.

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Ponomarev-Stepnoi, Nikolay N., Vladimir A. Pavshoock, and Veniamin A. Usov. "NPS options for lunar bases power supply." In Proceedings of the ninth symposium on space nuclear power systems. AIP, 1992. http://dx.doi.org/10.1063/1.41806.

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Reports on the topic "NPS"

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Baza, Joseph A., and Timothy E. Cabana. Analysis of NPS Contracting Service Quality. Fort Belvoir, VA: Defense Technical Information Center, December 2014. http://dx.doi.org/10.21236/ada619665.

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Rossberg, Felix. Structural Design of a NPS CubeSat Launcher. Fort Belvoir, VA: Defense Technical Information Center, January 2008. http://dx.doi.org/10.21236/ada490976.

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Horwitz, Benjamin, and Barbara Gillian Turgeon. Secondary Metabolites, Stress, and Signaling: Roles and Regulation of Peptides Produced by Non-ribosomal Peptide Synthetases. United States Department of Agriculture, 2005. http://dx.doi.org/10.32747/2005.7696522.bard.

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Fungal pathogens of plants produce a diverse array of small molecules. Often referred to as secondary metabolites because they were thought to be dispensable for basic functions, they may indeed have central roles as signals for the fungal cell, and in interactions with the host. We have identified more than a dozen genes encoding nonribosomal peptide synthetases (NPS) in Cochliobolusheterostrophus, the agent of southern corn leaf blight. The aim of this project was to identify roles of these genes in stress responses and signaling. The first objective was to test a complete collection of C. heterostrophus nonribosomal peptide synthetase (NRPS)-encoding gene deletion mutant and wildtype (WT) strains for sensitivity to various agents of oxidative (ROS) and nitrosative (RNOS) stress, in vitro. The second objective and next step in this part of the project was to study the relevance of sensitivity to ROS and RNOS in the host pathogen interaction, by measuring the production of ROS and RNOS in planta, when plants are inoculated with wild type and mutant strains. A third objective was to study expression of any genes shown to be involved in sensitivity to ROS or RNOS, in vitro and in planta. Another objective was to determine if any of the genes involved in oxidative or nitrosative stress responses are regulated by components of signal transduction pathways (STP) that we have identified and to determine where mechanisms overlap. Study of the collection of nps mutants identified phenotypes relevant for virulence, development and oxidative stress resistance for two of the genes, NPS2 and NPS6. Mutants in genes related to RNOS stress have no virulence phenotypes, while some of those related to ROS stress have reduced virulence as well as developmental phenotypes, so we focused primarily on ROS stress pathways. Furthermore, the identification of NPS2 and NPS6 as encoding for NRPS responsible for siderophore biosynthesis lent a new focus to the project, regulation by Fe. We have not yet developed good methods to image ROS in planta and work in this direction is continuing. We found that NPS6 expression is repressed by Fe, responding over the physiological Fe concentration range. Studying our collection of mutants, we found that conserved MAPK and G protein signal transduction pathways are dispensable for Fe regulation of NPS6, and initiated work to identify other pathways. The transcription factor SreA is one candidate, and is responsible for part, but not all, of the control of NPS6 expression. The results of this project show that the pathogen contends with oxidative stress through several signaling pathways. Loss of the siderophore produced by Nps6 makes the fungus sensitive to oxidative stress, and decreases virulence, suggesting a central role of the ability to sequester and take up extracellular iron in the host-pathogen interaction. Siderophores, and manipulation of Fe levels, could be targets for new strategies to deal with fungal pathogens of maize and other plants.

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Kragelund, Sean. NPS Center for Autonomous Underwater Vehicle (AUV) Research. Fort Belvoir, VA: Defense Technical Information Center, March 2004. http://dx.doi.org/10.21236/ada435909.

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Whittam, Kimberly P., and Jessica B. Janega. Navy-wide Personnel Survey (NPS) 2003: Tabulated Results. Fort Belvoir, VA: Defense Technical Information Center, January 2006. http://dx.doi.org/10.21236/ada441225.

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Healey, A. J., D. P. Horner, S. Kragelund, and B. Wring. AUVFEST 05 Quick Look Report of NPS Activities. Fort Belvoir, VA: Defense Technical Information Center, June 2005. http://dx.doi.org/10.21236/ada483421.

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Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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Abstract:

The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.

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Marco, David B., Alfredo Martins, and Anthony J. Healy. Surge Motion Parameter Identification for the NPS Phoenix AUV. Fort Belvoir, VA: Defense Technical Information Center, January 2005. http://dx.doi.org/10.21236/ada435927.

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Chiu, Ching-Sang, and Curtis A. Collins. California Current Monitoring Using the NPS Ocean Acoustic Observatory. Fort Belvoir, VA: Defense Technical Information Center, September 1999. http://dx.doi.org/10.21236/ada630641.

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Tweed, Alana M. NPS Government Purchase Card Program: An Analysis of Internal Controls. Fort Belvoir, VA: Defense Technical Information Center, March 2014. http://dx.doi.org/10.21236/ada612960.

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