Relevant bibliographies by topics / Alt flux

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Alt flux'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Alt flux"

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Li, De Sheng, Nian Yu Zou, Yun Cui Zhang, Xiao Yang He, and Yi Yang. "Study of High-Power White LED's Lifetime Based on Accelerated Life Test." Advanced Materials Research 800 (September 2013): 205–9. http://dx.doi.org/10.4028/www.scientific.net/amr.800.205.

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The study of LED reliability becomes more and more important with LED widely used in various areas, and accelerated life test (ALT) as an element of reliability test is widely used to predict the lifetime of LED. In this paper, ALTs have been carried out at various current levels and various temperature levels. In the current ALT experiment, three kinds of stressing currents were demonstrated for 1W white LEDs and lumen flux of the tested LEDs were studied, and based on Eyting model, lifetime of the tested LEDs is calculated about 6.86×105h. In the temperature ALT experiment, two kinds of stressing temperature were demonstrated for the same type of white LEDs and lumen flux were also studied, and based on Arrhenius model, lifetime of the tested LEDs is calculated about 7.41×105h. In addition, the color shifting velocity is faster than lumens depreciation velocity was observed in our experiment, which means the lifetime evaluating of white LED should be paid more attention.
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Wasson, J. G., J. L. Guyot, and H. Sanejouand. "Premières données concernant le Carbone Organique transporté par le Rio Desaguadero (Altiplano Bolivien)." Revue des sciences de l'eau 4, no. 3 (April 12, 2005): 363–79. http://dx.doi.org/10.7202/705105ar.

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Le Rio Desaguadero relie le lac Titicaca (alt. 3 810 m) au lac Poopo (alt. 3 670 m) dans le bassin endoréique de l'Altiplano, en Bolivie, (fig. 1). Le bassin versant est constitué de terrains sédimentaires et volcaniques, avec une végétation steppique et aucune source de pollution organique. Le climat très variable présente d'une alternance de saisons humide et sèche. Le Rio Mauri fournit 90 % du flux de MES estimé à 6,6.106 t an-1 (d'après GUYOT et al., 1990). Des analyses de COT et d'autres paramètres chimiques ont été réalisées sur 15 stations en 3 campagnes (fig. 2 et tableau 1). Une ACP (fig. 3) révèle une corrélation entre COT et MES, correspondant à deux épisodes de crues (déc. 87 et fév. 88) (tableau 2). Des hypothèses concernant l'origine du carbone organique et les flux sont avancées (tableau 3). Un flux de base, principalement du COD provenant du lac Titicaca, représenterait 18 000 t an-1. Mais le COP, quoique fortement corrélé aux MES, n'a pas la même origine que celles-ci (fig. 4); il proviendrait principalement des zones connexes au Rio Desaguadero riches en végétation aquatique. La contribution de ces flux aux bilans du carbone organique paraît négligeable pour le lac Titicaca et peu importante pour le lac Poopo. Mais le maintien des interconnexions entre le Rio Desaguadero et ses zones humides doit être intégré dans les projets d'aménagement.
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Viswanath, Pavithra, Georgios Batsios, Anne Marie Gillespie, Hema Artee Luchman, Joseph Costello, Russell Pieper, and Sabrina Ronen. "TAMI-08. A TALE OF TWO TELOMERE MAINTENANCE MECHANISMS: TERT EXPRESSION AND THE ALT PATHWAY INDUCE UNIQUE MRS-DETECTABLE METABOLIC REPROGRAMMING IN LOW-GRADE GLIOMAS." Neuro-Oncology 22, Supplement_2 (November 2020): ii214. http://dx.doi.org/10.1093/neuonc/noaa215.897.

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Abstract Telomeres are nucleoprotein structures at chromosomal ends that shorten with cell division and constitute a natural barrier to proliferation. In order to proliferate indefinitely, all tumors require a telomere maintenance mechanism (TMM). Telomerase reverse transcriptase (TERT) expression is the TMM in most tumors, including low-grade oligodendrogliomas (LGOGs). In contrast, low-grade astrocytomas (LGAs) use the alternative lengthening of telomeres (ALT) pathway as their TMM. As molecular hallmarks of tumor proliferation, TMMs are attractive tumor biomarkers and therapeutic targets. Non-invasive imaging of TMM status will, therefore, allow assessment of tumor proliferation and treatment response. However, translational methods of imaging TMM status are lacking. Here, we show that TERT expression and the ALT pathway are associated with unique magnetic resonance spectroscopy (MRS)-detectable metabolic reprogramming in LGOGs and LGAs respectively. In genetically-engineered and patient-derived LGOG models, TERT expression is linked to elevated 1H-MRS-detectable NAD(P)/H, glutathione, aspartate and AXP. In contrast, the ALT pathway in LGAs is associated with higher α-ketoglutarate, glutamate, alanine and AXP. Importantly, elevated flux of hyperpolarized [1-13C]-alanine to pyruvate, which depends on α-ketoglutarate, is a non-invasive in vivo imaging biomarker of the ALT pathway in LGAs while elevated flux of hyperpolarized [1-13C]-alanine to lactate, which depends on NADH, is an imaging biomarker of TERT expression in LGOGs. Mechanistically, the ALT pathway in LGAs is linked to higher glutaminase (GLS), a key enzyme for α-ketoglutarate biosynthesis while TERT expression in LGOGs is associated with elevated nicotinamide phosphoribosyltransferase (NAMPT), a key enzyme for NADH biosynthesis. Notably, TERT expression and the ALT pathway are linked to MRS-detectable metabolic reprogramming in LGOG and LGA patient biopsies, emphasizing the clinical validity of our observations. Collectively, we have identified unique metabolic signatures of TMM status that integrate critical oncogenic information with noninvasive imaging modalities that can improve diagnosis and treatment response monitoring for LGOG and LGA patients.
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Semblante, Galilee Uy, Sheng-Jie You, Guan-Hui Wu, Tien-Chin Chang, and Feng-Chin Yen. "Pore size and flux behavior of polyvinylidene fluoride and polymethyl vinyl ether-alt-maleic anhydride with TiO2." Chemical Engineering Journal 241 (April 2014): 513–20. http://dx.doi.org/10.1016/j.cej.2013.09.037.

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Nabavi, Seyed Reza. "Multi-objective Optimization of Preparation Conditions of Asymmetric Polyetherimide Membrane for Prevaporation of Isopropanol." Chemical Product and Process Modeling 11, no. 1 (March 1, 2016): 47–50. http://dx.doi.org/10.1515/cppm-2015-0062.

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Abstract Multi-objective optimization is used in many chemical engineering fields that have conflict objective functions. Prevaporation is an effective process for removing trace or minor amount of the component of diluting solutions. This process is used for dehydration of alcohols containing small amounts of water. In this process membrane flux and separation factor have conflict with each other. So a multi-objective optimization approach can be used for optimization of the process. In this paper, in first stage a neural network based model was developed for preparation conditions for polyetherimide membrane in isopropanol prevaporation. Four major variables involved in the membrane preparation procedure, including polymer concentration, additive content, solvent evaporation temperature and time was considered. Membrane flux and separation factor were considered as objective functions. Elitist Non-dominated sorting genetic algorithm with jumping gene and altruistic adaptation (Alt-NSGA-aJG) was applied for simultaneous maximization of flux and separation factor. Pareto optimal solutions for membrane preparation conditions and effect of decision variables (four preparation variables) on Pareto front were investigated.
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Spencer, M. K., A. Katz, and I. Raz. "Epinephrine increases tricarboxylic acid cycle intermediates in human skeletal muscle." American Journal of Physiology-Endocrinology and Metabolism 260, no. 3 (March 1, 1991): E436—E439. http://dx.doi.org/10.1152/ajpendo.1991.260.3.e436.

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The effects of epinephrine (E) and insulin infusions on the contents of tricarboxylic acid cycle intermediates (TCAI), adenine nucleotides and their catabolites, and amino acids in skeletal muscle have been investigated. Eight men were studied on two separate occasions: 1) during 120 min of euglycemic hyperinsulinemia (UH, approximately 5 mM; 40 mU.m-2.min-1) and 2) during UH while E was infused (UHE, 0.05 microgram.kg-1.min-1). Biopsies were taken from the quadriceps femoris muscle before and after each clamp. The sum of citrate, malate, and fumarate in muscle did not change significantly during UH (P greater than 0.05) but doubled during UHE (P less than 0.001). There were no significant changes in any of the adenine nucleotides, their catabolites (including inosine monophosphate), or aspartate during UH and UHE (P greater than 0.05); nor were there any significant changes in pyruvate or alanine contents during UH (P greater than 0.05). On the other hand, there were significant increases in pyruvate and alanine contents during UHE (P less than 0.01 and 0.05, respectively), suggesting that there was increased production of 2-oxoglutarate (a TCAI) via the alanine aminotransferase (ALT) reaction. It is concluded that E infusion increases the contents of TCAI in human skeletal muscle, and it is likely that at least part of the increase is attributable to increased flux through the ALT reaction.
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Castañeda, Pablo S., Clara L. Domínguez Delgado, Isabel M. R. Cruz, Luz M. M. Contreras, Eva M. M. Trinidad, Miriam L. Cervantes, and José J. Escobar-Chávez. "Development of Poly (Methyl vinyl ether-alt-maleic acid) Microneedles for Transdermal Delivery of Atorvastatin Calcium." Current Pharmaceutical Biotechnology 21, no. 9 (June 9, 2020): 852–61. http://dx.doi.org/10.2174/1389201021666200217103302.

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Aims: Biodegradable polymeric microneedles containing atorvastatin calcium were developed in order to improve the percutaneous absorption of the drug, useful for the treatment of hypercholesterolemia. Background: The use of physical enhancers like microneedles have shown good results to increase the delivery of drugs through the skin, the use of microneedles has very important advantages for transdermal drug delivery, for example, they are painless, easy to use and safe, they increase time interval of drug activity, dose, and reductions in adverse reactions, they also offer, the facility to remove the system instantly of the skin. Objective: Develop polymer microneedles loaded with a calcium atorvastatin and evaluate them by Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), bioadhesion, postwetting- bioadhesion, breaking strength, drug release test and in vitro percutaneous absorption studies to demonstrate the use of microneedles atorvastatin is able to cross the skin. Methods: The microneedles were made with poly (methyl vinyl ether-alt-maleic acid) as biodegradable polymer using the technique of casting in solution in a mold. After solidification these microneedles were characterized by Differential Scanning Calorimetry (DSC), Scanning Electron Microscopy (SEM), bioadhesion, post-wetting-bioadhesion, breaking strength, drug release test and in vitro percutaneous absorption studies. Results: In general, the performances were satisfactory for optimal formulation in terms of DSC with no interactions between drug and excipients, SEM shows microneedles with a conical shape, bioadhesion of 1570 g.f, post wetting-bioadhesion of 1503.4 g.f, breaking strength of 1566.7g.f that is sufficient to disrupt Stratum corneum, good drug release and a flux of 33.4 μg/cm2*h with a tLag of 15.14 h for the in vitro percutaneous absorption. Conclusion: The results indicate that it is possible to generate microneedles to increase the percutaneous absorption of calcium atorvastatin transdermally, with the potential to be used as an alternative to the oral route for the treatment of dyslipidemias.
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Savic, Dragana, Leanne Hodson, Stefan Neubauer, and Michael Pavlides. "The Importance of the Fatty Acid Transporter L-Carnitine in Non-Alcoholic Fatty Liver Disease (NAFLD)." Nutrients 12, no. 8 (July 22, 2020): 2178. http://dx.doi.org/10.3390/nu12082178.

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L-carnitine transports fatty acids into the mitochondria for oxidation and also buffers excess acetyl-CoA away from the mitochondria. Thus, L-carnitine may play a key role in maintaining liver function, by its effect on lipid metabolism. The importance of L-carnitine in liver health is supported by the observation that patients with primary carnitine deficiency (PCD) can present with fatty liver disease, which could be due to low levels of intrahepatic and serum levels of L-carnitine. Furthermore, studies suggest that supplementation with L-carnitine may reduce liver fat and the liver enzymes alanine aminotransferase (ALT) and aspartate transaminase (AST) in patients with Non-Alcoholic Fatty Liver Disease (NAFLD). L-carnitine has also been shown to improve insulin sensitivity and elevate pyruvate dehydrogenase (PDH) flux. Studies that show reduced intrahepatic fat and reduced liver enzymes after L-carnitine supplementation suggest that L-carnitine might be a promising supplement to improve or delay the progression of NAFLD.
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Gaxela, Nelisa Ncumisa, Philiswa Nosizo Nomngongo, and Richard Motlhaletsi Moutloali. "Effect of the Zwitterion, p(MAO-DMPA), on the Internal Structure, Fouling Characteristics, and Dye Rejection Mechanism of PVDF Membranes." Membranes 10, no. 11 (October 31, 2020): 323. http://dx.doi.org/10.3390/membranes10110323.

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The zwitterion poly-(maleic anhydride-alt-1-octadecene-3-(dimethylamino)-1-propylamine) (p(MAO-DMPA)) synthesized using a ring-opening reaction was used as a poly(vinylidene fluoride) (PVDF) membrane modifier/additive during phase inversion process. The zwitterion was characterized using proton nuclear magnetic resonance (1HNMR) and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). Atomic force microscopy (AFM), field emission scanning electron microscope (SEM), FTIR, and contact angle measurements were taken for the membranes. The effect of the zwitterionization content on membrane performance indicators such as pure water flux, membrane fouling, and dye rejection was investigated. The morphology of the membranes showed that the increase in the zwitterion amount led to a general decrease in pore size with a concomitant increase in the number of membrane surface pores. The surface roughness was not particularly affected by the amount of the additive; however, the internal structure was greatly influenced, leading to varying rejection mechanisms for the larger dye molecule. On the other hand, the wettability of the membranes initially decreased with increasing content to a certain point and then increased as the membrane homogeneity changed at higher zwitterion percentages. Flux and fouling properties were enhanced through the addition of zwitterion compared to the pristine PVDF membrane. The high (>90%) rejection of anionic dye, Congo red, indicated that these membranes behaved as ultrafiltration (UF). In comparison, the cationic dye, rhodamine 6G, was only rejected to <70%, with rejection being predominantly electrostatic-based. This work shows that zwitterion addition imparted good membrane performance to PVDF membranes up to an optimum content whereby membrane homogeneity was compromised, leading to poor performance at its higher loading.
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Nguetsop, V. F., I. Bentaleb, C. Favier, C. Martin, S. Servant-Vildary, and M. Servant. "Past environmental and climatic changes during the last 7200 cal yrs BP in Adamawa Plateau (Northern-Cameroun) based on fossil diatoms and sedimentary <sup>13</sup>C isotopic records from Lake Mbalang." Climate of the Past Discussions 7, no. 1 (January 21, 2011): 305–45. http://dx.doi.org/10.5194/cpd-7-305-2011.

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Abstract. Past limnological conditions of Lake Mbalang (7°19´ N, 13°44´ E, alt: 1130 m) and vegetation type were reconstructed from diatoms and sedimentary stable carbon isotope records (δ13C) since 7200 cal yrs BP. The data showed that before 3600 yrs cal BP the water column was preferentially cold and stable except around 5000–5300 cal yrs BP where diatom evidenced mixed upper water layer, δ13C data suggest more forested vegetation in the landscape. These stable conditions can be explained by a strong monsoonal flux and correlatively northern position of the ITCZ that entailed high/low rainfall well distributed over the year to allow the development mountainous forest taxa. The decreasing trend of the monsoonal flux towards mid-Holocene was however affected by several centennial to millennial time scale abrupt weakening at 6700, 5800–6000, 5000–5300, 4500 and 3600 cal yrs BP although their impact on vegetation is not visible probably because rainfall distribution was favourable to forest maintenance or extension. After 3600 cal yrs BP, water column became very mixed as a result of more intense NE trade winds (Harmattan) that led at ~3000 cal yrs BP to the instalment of savana in the vegetation landscape. At that time, rainfall was probably reduced following the southwards shift of the ITCZ and the distribution of yearly rainfall was no more favourable to forest development. Thus a strong seasonality with a well marked dry season was established, conditions that maintained the savana vegetation till today. Diatom data suggest the lake did not dried during the last 7200 cal yrs BP, however, a low lake level observed at 2400–2100 cal yrs BP is contemporaneous to a climatic event evidenced in several areas of tropical Africa and could correspond to the southernmost position of the ITCZ. Other low lake levels are observed at 1800 and 1400 cal yrs BP, after which lake rose to its present level.
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Dissertations / Theses on the topic "Alt flux"

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Pérez, Carrasco Marcos. "Influenza A (H1N1)pdm 2009. Papel de la medicina intensiva durante la pandemia y post-pandemia." Doctoral thesis, Universitat Autònoma de Barcelona, 2015. http://hdl.handle.net/10803/378845.

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La pandemia por virus influenza A(H1N1)pdm09 se caracterizó por una afectación severa de la función respiratoria, por lo que numerosos pacientes requirieron ingreso en el Servicio de Medicina Intensiva (SMI) para su mantenimiento y soporte. Las terapias utilizadas incluyen los sistemas de oxigenación, diferentes modalidades ventilatorias no invasivas e invasivas. Lamentablemente, las modalidades invasivas se han relacionado con una evolución desfavorable, tanto por la mayor gravedad del paciente que las requiere, como por las complicaciones asociadas a su uso. Los nuevos sistemas de oxigenoterapia de alto flujo y las modalidades de ventilación no invasiva utilizados en pacientes críticos, se presentan como claras alternativas a los medios invasivos. Además, el papel desempeñado por la Medicina Intensiva tanto en la esfera terapéutica como epidemiológica durante y después de la pandemia no ha sido claramente evaluado hasta el momento actual. Tales premisas han generado el planteamiento de esta Tesis que pretende analizar el papel de la Medicina Intensiva en el manejo no invasivo de la insuficiencia respiratoria aguda por infección por virus influenza A durante la pandemia y post-pandemia. Se incluyen tres estudios originales, presentados dos de ellos como publicaciones indexadas que dan respuesta a las cuestiones planteadas. La experiencia adquirida con estas terapias durante la pandemia ha facilitado su generalización en el manejo del paciente durante los periodos de pandemia y post-pandemia. Además, ha permitido dar un paso adelante a la Medicina Intensiva en la precocidad del diagnóstico y manejo del paciente. Los datos necesarios para su elaboración fueron obtenidos de dos fuentes. La primera fuente fue un registro voluntario reclutado por investigadores del Grupo de Trabajo de Enfermedades Infecciosas de la SEMICYUC, incluyendo pacientes con neumonía viral debido a infección por influenza A(H1N1)pdm09 ingresados en el SMI, estudiando el uso de la ventilación mecánica no invasiva (VMNI); a través de esta fuente, con los datos del Hospital Universitari Vall d’Hebron se realizó un análisis post hoc que valoraba la utilidad de la oxigenoterapia de alto flujo (OAF) en los pacientes ya seleccionados. La segunda fuente se generó tras el diseño de un estudio observacional prospectivo que evaluaba los pacientes con infección respiratoria aguda grave admitidos en el SMI del Hospital Universitari Vall d’Hebron en un período posterior a la pandemia (tres temporadas). De este modo nos permitió valorar las características virológicas, clínicas y actitudes terapéuticas durante la post-pandemia y compararlas con la pandemia. Todos los estudios se llevaron a cabo con la aprobación del Comité Ético del Hospital Universitari Vall d’Hebron. Los principales resultados reflejaron que las terapias de OAF y VMNI son de utilidad en el manejo de la insuficiencia respiratoria aguda por virus influenza A pandémico; el retraso en iniciar la ventilación mecánica invasiva (VMI) tras fracasar las terapias no invasivas, no ensombreció el pronóstico final, probablemente debido a la precocidad en detectar el fallo terapéutico y la intubación no demorada en estos casos. Además, los datos clínicos y epidemiológicos facilitaron el diagnóstico y manejo precoz de los pacientes con infección por virus influenza durante la post-pandemia.
Influenza A (H1N1)pdm09 infection was characterized by a severe impairment of respiratory function. Many patients required admission in the intensive care unit (ICU) for maintenance and support. Therapies as oxygenation systems, non-invasive and invasive ventilation were required. Unfortunately, invasive ventilation has been associated with an unfavourable evolution, hence the greater severity of the patient's needs, such as complications associated with its use. High flow oxygen therapy and non-invasive ventilation are modalities used in critically ill patients and a clear alternative to invasive ventilation. In addition, the role of Intensive Care in both therapeutic and epidemiological sphere during and after the pandemic has not been clearly evaluated to date. Those premises have generated the approach of this Thesis that analyzes the role of Intensive Care Medicine in the non-invasive management of acute respiratory failure due to influenza A infection during the pandemic and post-pandemic. Three original studies were included; two of them presented as indexed publications that respond to the issues raised. The experience with these therapies during the pandemic has facilitated its spread in patient management during periods of pandemic and post-pandemic. It has also enabled a step forward to the Intensive Care in early diagnosis and patient management. The data required for processing were obtained from two sources. The first source was a voluntary registry recruited by researchers of the Working Group on Infectious Diseases SEMICYUC, including patients with viral pneumonia due to influenza A (H1N1)pdm09 infection admitted to the ICU, analysing the use of non-invasive ventilation (NIV); through this source, with data from the Hospital Universitari Vall d'Hebron a post hoc analysis that valued the usefulness of high-flow oxygen (OAF) was carried out. The second source was generated after the design of a prospective observational study-evaluating patients with severe acute respiratory infection admitted to the ICU of the Hospital Universitari Vall d'Hebron in post-pandemic (three-year) period. This allowed us to assess virological, clinical and therapeutic approaches for the post-pandemic and compare them with the pandemic. All studies were conducted with the approval of the Ethics Committee of the Hospital Universitari Vall d'Hebron. The main results showed that the OAF and NIV therapies are useful in the management of acute respiratory failure due to pandemic influenza virus; the delay in initiating invasive mechanical ventilation (IMV) after failing non-invasive therapies did not hinder the final prognosis, probably due to the precocity in detecting treatment failure and not delayed intubation in these cases. In addition, clinical and epidemiological data facilitated early diagnosis and management of patients with influenza virus infection during the post-pandemic.
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Rodrigues, Julia da Rosa Howat. "Projeto e construção de um simulador solar concentrador." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/3/3150/tde-25082016-093701/.

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Segundo o Atlas Brasileiro de Energia Solar, apesar das diferentes características climáticas observadas no Brasil, pode-se constatar que a média anual de irradiação solar global apresenta boa uniformidade e elevados índices por todo o país. Os valores desta grandeza em quase toda a extensão do território brasileiro (4200-6700 Wh/m2/dia) são superiores aos da maioria dos países da União Europeia, como Alemanha (900-1250 Wh/m2/dia), França (900-1650 Wh/m2/dia) e Espanha (1200-1850 Wh/m2/dia), onde projetos para aproveitamento de energia solar, alguns contando com fortes incentivos governamentais, são amplamente disseminados. Grande parte dos avanços científicos obtidos nos estudos sobre aproveitamento da energia solar se deve à utilização de simuladores solares compactos nos experimentos de longa duração. Ao substituir o Sol por fontes artificiais, como lâmpadas capazes de emitir radiação próxima à solar, os simuladores eliminam a dependência de fatores naturais como condições climáticas, horário do dia, intermitência e movimento de direção da radiação solar. O projeto proposto para esta dissertação de Mestrado teve como objetivo o domínio do processo de concepção e fabricação de um simulador solar concentrador formado por lâmpadas e um refletor ótico. Uma vez dominada a técnica, um modelo piloto de simulador solar foi construído e alguns testes executados para avaliar a qualidade do projeto, a resistência dos componentes e o fator de concentração do aparato.
According to the Brazilian Atlas of Solar Energy, despite the different climatic characteristics observed in Brazil, the annual average of global solar irradiation has good uniformity and high levels throughout the country. The values of global solar irradiation in almost the entire length of Brazil (4200-6700 Wh/m2/day) are higher than those observed in most European Union countries, like Germany (900-1250 Wh/m2/day), France (900-1650 Wh/m2/day) and Spain (1200-1850 Wh/m2/day), where projects for solar energy applications, some of them relying on strong government incentives, are widely disseminated. Several scientific and technological advances made in the study of solar energy applications are due to the use of compact solar simulators in long-term experiments. Replacing the Sun by artificial sources, such as arc lamps with radiation emission similar to the Sun spectrum, indoor simulators avoid the dependence on natural conditions such as the weather, the daytime, the sunlight intermittence and the directional change of the solar radiation. The project proposed for this dissertation aimed to master the design and manufacturing processes of a high-flux solar simulator consisting of arc lamps and an optical reflector. Once technique was understood, a solar simulation pilot model was built and some tests were performed to assess the project quality, the resistance of components and the apparatus concentration factor.
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Zhou, Sihai. "Processing and characterisation of MgB₂ superconductors." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20041111.135706/index.html.

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Marinaro, Damián. "A study into the effects of fission-fragment damage on activation energies in AG/B12223 tapes." Access electronically, 2003. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040413.125335/index.html.

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Pitrun, Miroslav. "The effect of welding parameters on levels of diffusible hydrogen in weld metal deposited using gas shielded rutile flux cored wires." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20050202.153920/index.html.

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Kularatne, Kottabogoda Angidigedera Samantha Rangajeewa. "Factors influencing sediment re-suspension and cross-shore suspended sediment flux in the frequency domain." University of Western Australia. School of Environmental Systems Engineering, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0005.

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[Truncated abstract] With rapidly increasing population densities along coastlines and rising global sea levels, coastal protection has become a major concern for coastal communities. Predicting sediment transport in nearshore regions, however, is one of the most challenging tasks faced by coastal researchers in designing coastal structures or beach nourishment schemes. Although nearshore sediment transport mainly occurs in the longshore direction, cross-shore sediment transport is crucial in determining the shoreline evolution and beach morphology . . . This study investigated the factors influencing sediment re-suspension and cross-shore suspended sediment flux in the frequency domain through a series of field measurements conducted at several different locations and a numerical model. Only oscillatory flow components were examined and the mean flow components were not considered. Although many different factors such as cross-shore location with respect to breaker line, significant wave height to water depth ratio (Hs/h), normalised horizontal velocity skewness (/‹u²›³/²), median grain size (d50), breaker type, and wave groupiness appeared to influence the magnitude of cross-shore suspended sediment flux, bed ripples was identified as the major contributing factor in changing the direction of suspended sediment flux due to incident swell waves. Moreover, the direction changed significantly with ripple type. High frequency measurements, obtained to examine the influence of turbulent kinetic energy (TKE) on higher sediment suspension events observed under wave groups indicated that higher TKE was generated at the seabed by approaching wave groups, which in turn resulted in higher suspension events.°1
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Styles, Julie Maree, and julie styles@oregonstate edu. "Inverse Modelling of Trace Gas Exchange at Canopy and Regional Scales." The Australian National University. Research School of Biological Sciences, 2003. http://thesis.anu.edu.au./public/adt-ANU20030905.040030.

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This thesis deals with the estimation of plant-atmosphere trace gas exchange and isotopic discrimination from atmospheric concentration measurements. Two space scales were investigated: canopy and regional. The canopy-scale study combined a Lagrangian model of turbulent dispersal with ecophysiological principles to infer vertical profiles of fluxes of CO2, H2O and heat as well as carbon and oxygen isotope discrimination during CO2 assimilation, from concentration measurements within a forest. The regional-scale model used a convective boundary layer budget approach to infer average regional isotopic discrimination and fluxes of CO2 and sensible and latent heat from the evolution during the day of boundary layer height and mean concentrations of CO2 and H2O, temperature and carbon and oxygen isotope composition of CO2. For the canopy study, concentrations of five scalar quantities, CO2, 13CO2, C18O16O, H2O and temperature, were measured at up to nine heights within and above a mixed fir and spruce forest in central Siberia over several days just after snow melt in May 2000. Eddy covariance measurements of CO2, H2O and heat fluxes were made above the canopy over the same period, providing independent verification of the model flux estimates. Photosynthesis, transpiration, heat exchange and isotope discrimination during CO2 assimilation were modelled for sun and shade leaves throughout the canopy through a combination of inversion of the concentration data and principles of biochemistry, plant physiology and energy balance. In contrast to the more usual inverse modelling concept where fluxes are inferred directly from concentrations, in this study the inversion was used to predict unknown parameters within a process-based model of leaf gas and energy exchange. Parameters relating to photosynthetic capacity, stomatal conductance, radiation penetration and turbulence structure were optimised by the inversion to provide the best fit of modelled to measured concentration profiles of the five scalars. Model results showed that carbon isotope discrimination, stomatal conductance and intercellular CO2 concentration were depressed due to the low temperatures experienced during snow melt, oxygen isotope discrimination was positive and consistent with other estimates, radiation penetrated further than simple theoretical predictions because of leaf clumping and penumbra, the turbulence coherence was lower than expected and stability effects were important in the morning and evening. For the regional study, five flights were undertaken over two days in and above the convective boundary layer above a heterogeneous pine forest and bog region in central Siberia. Vertical profiles of CO2 and H2O concentrations, temperature and pressure were obtained during each flight. Air flask samples were taken at various heights for carbon and oxygen isotopic analysis of CO2. Two budget methods were used to estimate regional surface fluxes of CO2 and plant isotopic discrimination against 13CO2 and C18O16O, with the first method also used to infer regional sensible and latent heat fluxes. Flux estimates were compared to ground-based eddy covariance measurements. Model results showed that afternoon estimates for carbon and oxygen isotope discrimination were close to those expected from source water isotopic measurements and theory of isotope discrimination. Estimates for oxygen isotope discrimination for the morning period were considerably different and could be explained by contrasting influences of the two different ecosystem types and non-steady state evaporative enrichment of leaf water.
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Milliken, Damion Alexander. "Uranium doping of silver sheathed bismuth-strontium-calcium-copper-oxide superconducting tapes for increased critical current density through enhanced flux pinning." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040810.154223/index.html.

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Zhao, Yongjun. "The cooling of a hot steel plate by an impinging water jet." Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060316.150622/index.html.

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Hoffmann, Madonna Bridget, and Madonna hoffman@dpi qld gov au. "Application of tree and stand allometrics to the determination of biomass and its flux in some north-east Australian woodlands." Central Queensland University. Biological and Environmental Sciences, 2007. http://library-resources.cqu.edu.au./thesis/adt-QCQU/public/adt-QCQU20070525.144254.

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This thesis examines the effects of species, rainfall and soil type on tree biomass regressions, as well as the effects of stand dominance and structure on stand biomass regressions in north-east Australian woodlands. This was achieved by examining tree characteristics and biomass relationships for a series of woodland monitoring sites throughout the study area. This study utilised a modified data set from this permanent monitoring site network to provide structural attributes for trees and communities of varying composition in the grazed woodlands. These data were supplemented with environmental data and tree harvest data sets. Initially, the research reported in this thesis developed allometric and stand biomass regressions for Callitris glaucophylla communities. This research also demonstrated that changes in tree-form were not reflected in changes in the environment, nor did such changes reflect changes in tree biomass regressions for three eucalypt species. As a result, a common regression provides a robust estimate of total aboveground biomass of eucalypt trees in the study area. Thus expensive destructive harvesting can generally be avoided for minor eucalypt species. Finally, this study demonstrated a successful methodology that described the stand structure of all the grazed woodland sites based on tree heights. This methodology was developed to allow the expansion of a single stand regression to estimate stand biomass across the entire north-east Australian woodlands. The findings demonstrated in this study, combined with the long-term data from the permanent monitoring network sites, should enhance the estimation of carbon flux within eucalypt communities of north-east Australia’s grazed woodlands.
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Books on the topic "Alt flux"

1

The way of all flux. Moorhead, MN: New Rivers Press, 2012.

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Art & flux: Une esthétique du contemporain. Paris: L'Harmattan, 2014.

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The modern flux: Polish art after 1989. [Trondheim: Norwegian University of Science and Technology], 2008.

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1932-2004, Tawara Yūsaku, Addiss Stephen 1935-, and Rosand David, eds. Universe is flux: The art of Tawara Yūsaku. [Indianapolis, Ind.]: Indianapolis Museum of Art, 2011.

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Université de Saint-Etienne. Centre interdisciplinaire d'étude et de recherche sur l'expression contemporaine, ed. Art et ville contemporaine: Rythmes et flux. Saint-Etienne: Publications de l'Université de Saint-Etienne, 2012.

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Le flux et le fixe: Peinture et musique. Paris]: Fayard, 2012.

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Williams, Emmett. My life in flux and vice versa. Stuttgart: Edition Hansjörg Mayer, 1991.

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Williams, Emmett. My life in flux--and vice versa. London: Thames and Hudson, 1992.

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Farb, Hernandez Joanne, Karlstrom Paul J, and Wiegand Art Gallery, eds. Fire and flux: An undaunted vision : the art of Charles Strong. Belmont, Calif: Wiegand Gallery, College of Notre Dame, 2001.

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Flu chtlingsschutz als globale und lokale Herausforderung. Wiesbaden: VS Verlag fu r Sozialwissenschaften / Springer Fachmedien Wiesbaden GmbH, Wiesbaden, 2011.

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Book chapters on the topic "Alt flux"

1

Scovazzi, Guglielmo, and Alejandro López Ortega. "Algebraic Flux Correction and Geometric Conservation in ALE Computations." In Flux-Corrected Transport, 299–343. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-4038-9_9.

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Aidelsburger, Monika. "All-Optical Setup for Flux Rectification." In Springer Theses, 119–35. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25829-4_7.

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Macintyre, Sally, Werner Eugster, and George W. Kling. "The Critical Importance of Buoyancy Flux for Gas Flux Across the Air-Water Interface." In Gas Transfer at Water Surfaces, 135–39. Washington, D. C.: American Geophysical Union, 2013. http://dx.doi.org/10.1029/gm127p0135.

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Dürr, Detlef. "Vom Fluß zur Streutheorie." In Bohmsche Mechanik als Grundlage der Quantenmechanik, 307–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56507-6_16.

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Mousseau, Joel Allen. "Efficiency Correction and Flux Division." In First Search for the EMC Effect and Nuclear Shadowing in Neutrino Nuclear Deep Inelastic Scattering at MINERvA, 133–36. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-44841-1_12.

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Mulholland, Marc. "Peoples and Parties in a Decade of Flux." In Northern Ireland at the Crossroads, 1–11. London: Palgrave Macmillan UK, 2000. http://dx.doi.org/10.1057/9780333977866_1.

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Nestlen, M. G. "A New Instrument for SO2 Eddy Flux Measurements." In Acid Deposition at High Elevation Sites, 569–82. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-3079-7_34.

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Edwards, Michael G., and Hongwen Zheng. "Quasi-Positive Continuous Darcy-Flux Finite-Volume Methods." In Progress in Industrial Mathematics at ECMI 2008, 819–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-12110-4_131.

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Cabrera, Blas. "Search for Cosmic Ray Monopole Flux Using Superconductive Detectors." In Electroweak Effects at High Energies, 611–27. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2451-5_40.

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Farrell, Patricio, Thomas Koprucki, and Jürgen Fuhrmann. "Comparison of Scharfetter-Gummel Flux Discretizations Under Blakemore Statistics." In Progress in Industrial Mathematics at ECMI 2016, 91–97. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63082-3_13.

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Conference papers on the topic "Alt flux"

1

DeRuyter, Jamie. "Flux." In ACM SIGGRAPH 97 Visual Proceedings: The art and interdisciplinary programs of SIGGRAPH '97. New York, New York, USA: ACM Press, 1997. http://dx.doi.org/10.1145/259081.259371.

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Edwards, Jack, Meng-Sing Liou, Jack Edwards, and Meng-Sing Liou. "Low-diffusion flux-splitting methods for flows at all speeds." In 13th Computational Fluid Dynamics Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1997. http://dx.doi.org/10.2514/6.1997-1862.

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Thiemann, P., C. Mantala, T. Mueller, R. Strothmann, and E. Zhou. "PMSM sensorless control with Direct Flux Control for all speeds." In 2012 IEEE Symposium on Sensorless Control for Electrical Drives (SLED). IEEE, 2012. http://dx.doi.org/10.1109/sled.2012.6422812.

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Mankaeva, G. A., B. B. Mikhalyaev, S. B. Derteev, and L. N. Dzhimbeeva. "INSTABILITY OF FAST MAGNETOACOUSTIC WAVES IN CORONAL MAGNETIC FLUX TUBES." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2020. http://dx.doi.org/10.31725/0552-5829-2020-197-200.

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Kibushi, R., K. Yuki, N. Unno, K. Yuki, T. Tomimura, T. Hatakeyama, and M. Ishizuka. "Thermal resistance evaluation in high heat flux electronics." In 2018 International Conference on Electronics Packaging and iMAPS All Asia Conference (ICEP-IAAC). IEEE, 2018. http://dx.doi.org/10.23919/icep.2018.8374349.

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Zhang, Libin, Guo Zhu, Kuan Sun, Zhiyin Gan, and Xiaobing Luo. "Molecular Dynamics Simulation of AlN Deposition: Effect of N:Al Flux Ratio." In ASME 2018 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/ipack2018-8315.

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In order to study the optimal N:Al flux ratio during the deposition of AlN, the effects of N:Al flux ratio on the crystal quality (crystallinity and surface roughness) of homoepitaxial AlN are investigated. The growth temperature ranges from 1600 K to 2000 K with an increment of 200 K. When the N:Al flux ratios are changed from 0.8 to 2.8, the good crystallinity is obtained at 1600 K with the N:Al flux ratio of 2.4, while it is obtained at 1800 K with the N:Al flux ratio of 2.4 and with the N:Al flux ratio of 2.0 at 2000 K. The crystallinity at 1800 K with N:Al flux ratio of 2.4 stands out among these three. At 1800 K with varied N:Al flux ratios, the minimum surface roughness is also obtained at the N:Al flux ratio of 2.4. Further more, the distribution of deposited Al atoms at 1800 K is explored, the result shows that the uniform distribution of Al atoms appears at N:Al flux ratio of 2.4.
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Kraus, Alex, Uwe Bach, Axel Jessner, and Benjamin Winkel. "Checking the base of the flux density calibration scale." In 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC). IEEE, 2015. http://dx.doi.org/10.1109/ursi-at-rasc.2015.7303194.

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Kutsenko, A. S. "DIFFERENTIAL ROTATION OF MAGNETIC STRUCTURES WITH DIFFERENT TOTAL UNSIGNED MAGNETIC FLUX." In All-Russia Conference on Solar and Solar-Terrestrial Physics. The Central Astronomical Observatory of the Russian Academy of Sciences at Pulkovo, 2019. http://dx.doi.org/10.31725/0552-5829-2019-265-268.

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Diego-Marin, Antonio, Carlos Melendez-Cervantes, and Alejandro Mani Gonzalez. "The Effect of Nitrogen in Natural Gas on the NOx Emission From a 90 kW Burner." In ASME 2010 Power Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/power2010-27139.

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The role of different levels of nitrogen in natural gas on the emissions of NOx was investigated in a furnace. Nitrogen was added to the natural gas in concentrations of 4, 7 and 11% by volume. In addition, a trial was carried out as a baseline with 0.17% N2. The thermal load of the furnace was 90 kW and was kept constant in all four trials. Flue gas temperatures were measured with a small suction pyrometer, as well as incident heat flux with an ellipsoidal radiometer. In addition, flue gas composition was conducted at the stack of the experimental furnace. NOx emissions decreased as nitrogen was added to natural gas. This was due to the reduction of flue gas temperature near the burner zone where the thermal mechanism can play a significant role. With 11% nitrogen in natural gas, the flue gas temperature and the incident heat flux near the burner were the lowest, but the highest at the furnace exit. Therefore, care should be taken to avoid damages in gas turbines or furnaces while burning natural gas with high nitrogen content.
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Shi, Ke, Scott Morris, and Aleksandar Jemcov. "A Primitive Variable Central Flux Scheme for All Mach Number Flows." In 53rd AIAA Aerospace Sciences Meeting. Reston, Virginia: American Institute of Aeronautics and Astronautics, 2015. http://dx.doi.org/10.2514/6.2015-1265.

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Reports on the topic "Alt flux"

1

Uehara, Y., G. Fischer, J. Kring, and R. C. C. Perera. Performance of beamline 9.3.1 at the ALS: Flux and resolution measurements. Office of Scientific and Technical Information (OSTI), April 1997. http://dx.doi.org/10.2172/603629.

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Grossman, A. S., K. E. Grant, and D. J. Wuebbles. Radiative flux calculations at UV and visible wavelengths. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10108002.

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Feofanov, A. K., J. Lisenfeld, and A. V. Ustinov. Measurements of Two-Cell Flux Qubits at Millikelvin Temperatures. Fort Belvoir, VA: Defense Technical Information Center, September 2008. http://dx.doi.org/10.21236/ada535253.

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Hu, J. P., R. N. Reciniello, and N. E. Holden. Decommissioning of the High Flux Beam Reactor at Brookhaven Lab. Office of Scientific and Technical Information (OSTI), May 2011. http://dx.doi.org/10.2172/1169553.

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Maan, Kuldeep Kaur. EMPIRICAL DETERMINATION OF THE NEUTRINO FLUX AT THE NOvA EXPERIMENT. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1502823.

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Vitali, Bastiano. In situ monitoring of the stopped muon flux at Mu2e. Office of Scientific and Technical Information (OSTI), January 2020. http://dx.doi.org/10.2172/1764143.

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Kessler, S. F. The reliability-centered maintenance study at the Fast Flux Test Facility. Office of Scientific and Technical Information (OSTI), January 1988. http://dx.doi.org/10.2172/6883318.

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Ogren, John A., Ellsworth G. Dutton, and Allison C. McComiskey. Development of Aerosol Models for Radiative Flux Calculations at ARM Sites. Office of Scientific and Technical Information (OSTI), September 2006. http://dx.doi.org/10.2172/936852.

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Beitel, G. R. A Review of Boiling Heat Transfer Processes at High Heat Flux. Fort Belvoir, VA: Defense Technical Information Center, April 1991. http://dx.doi.org/10.21236/ada584968.

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Scott, S. W. Scoping assessment on medical isotope production at the Fast Flux Test Facility. Office of Scientific and Technical Information (OSTI), August 1997. http://dx.doi.org/10.2172/341305.

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