Mostrando 241 - 260 Resultados de 2,278 Para Buscar '"chemist"', tiempo de consulta: 0.15s Limitar resultados
  1. 241
    por Malcolme-Lawes, D. J., Pasquini, C.
    Publicado 1988
    “…The system was also tested in use with real samples using an ammonium ion analysis on potable and effluent water samples, and the results compared with those obtained using a segmented continuous flow method operated at the Laboratory of the Government Chemist.…”
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  2. 242
    por Schomburg, Lutz
    Publicado 2016
    “…Next year (2017), the micronutrient Selenium (Se) is celebrating its birthday—i.e., 200 years after first being identified by the Swedish chemist Jöns Jakob Berzelius. Despite its impressive age, research into the functions of this essential trace element is very alive and reaching out for new horizons. …”
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  3. 243
    por Weetman, Catherine
    Publicado 2020
    “…This Minireview aims to highlight the potential of these complexes towards catalytic application and their role as synthons in further functionalisations making them a versatile tool for the modern synthetic chemist.…”
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  4. 244
    “…[Image: see text] Precision deuteration has become part of the medicinal chemist’s toolbox, but its usefulness can be undermined by unpredictable metabolic switch effects. …”
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  5. 245
    por Thiriet, Marc
    Publicado 2008
    “…This book will appeal to any biologist, chemist, physicist, or applied mathematician with an interest in the functioning of the cardiovascular system.…”
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  6. 246
    por Mee, Nicholas
    Publicado 2012
    “…The book is filled with stories about the eccentric characters that litter the history of science. These include a chemist who was addicted to the pleasures of laughing gas; the inventor of the kaleidoscope, whose business sense didn't match his scientific acumen; the weird looming apparition of the Brocken spectre - a ghostly giant who offered vital inspiration to a leading researcher; a physicist who compared his power to transmute the elements to the fabled alchemist Hermes Trismegistus and an astronomer who was captivated by the beauty of a falling snowflake. …”
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  7. 247
    por Guerra, Francesco, Robotti, Nadia
    Publicado 2018
    “…The notebook was found by the authors while browsing through documents left by Oscar D'Agostino, the chemist among Fermi's group. From Fermi's notes, they reconstruct with skill and expertise the detailed timeline of the critical days leading up to his vital discovery. …”
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  8. 248
    por Arey, Janet
    Publicado 2004
    “…This commentary is a plea from an atmospheric chemist for more cooperation among toxicologists, analytical chemists, atmospheric chemists, and automotive and combustion engineers to provide a comprehensive assessment of health risks to humans exposed to contemporary diesel emissions and for greater quantities and more diverse types of DEP and ambient samples (i.e., SRMs) that can be shared and exhaustively characterized. …”
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  9. 249
    “…These studies include those of workers exposed to a polychlorinated biphenyl (PCB) transformer fire in the United States, German chemical workers exposed to 2,3,7,8-tetrachlorodibenzodioxin (2,3,7,8-TCDD) while cleaning up after an explosion, workers at a municipal incinerator in New York City, a chemist exposed to brominated and chlorinated dioxins, U.S. veterans and also Vietnamese civilians exposed to Agent Orange contaminated with TCDD in Vietnam, and victims of the polychlorinated dibenzofuran and PCB contaminated rice oil (Yusho) incident in Japan.…”
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  10. 250
    por Harsha, N M, Nagaraja, T.N
    Publicado 2010
    “…Sir Prafulla Chandra Ray, the author of this book, who was a chemist by profession, has contributed greatly to the field of Rasashastra in his own style. …”
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  11. 251
    “…Accelerated Integrated Science Sequence (AISS) is a two semester, double credit sequence co-taught by a biologist, a physicist and a chemist to first year undergraduates who plan to major in a natural science field. …”
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  12. 252
    por Scholliers, Peter
    Publicado 2014
    “…In 1856, the mayor of Brussels proposed the establishment of a municipal laboratory with a chemist to analyse food and beverages to restrain fraud. …”
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  13. 253
    “…Since the disclosure of Biginelli reaction by the chemist Pietro Biginelli, functionalized 3,4-dihydropyrimidin-2(1H)-ones/thiones (DHPMs) have emerged as prototypes for the design of compounds with a broad variety of biological activities. …”
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  14. 254
    por Holtmann, Dirk, Hollmann, Frank
    Publicado 2016
    “…Monooxygenases are promising catalysts because they in principle enable the organic chemist to perform highly selective oxyfunctionalisation reactions that are otherwise difficult to achieve. …”
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  15. 255
    por Gau, Michael R., Zdilla, Michael J.
    Publicado 2016
    “…Organolithium reagents are powerful tools in the synthetic chemist's toolbox. However, the extreme pyrophoric nature of the most reactive reagents warrants proper technique, thorough training, and proper personal protective equipment. …”
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  16. 256
  17. 257
    “…We hope that this review will guide synthetic chemists through the many strategies known to make porphyrins and hydroporphyrins water soluble.…”
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  18. 258
    “…Synthesis of molecules remains one of the most important challenges in organic chemistry, and the standard approach involved by a chemist to solve a problem is based on experience and constitutes a repetitive, time-consuming task, often resulting in nonoptimized solutions. …”
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  19. 259
    “…The practice of virtual screening (VS) to identify chemical leads to known or novel targets is becoming a core function of the computational chemist within industry. By employing a range of techniques, when attempting to identify compounds with activity against a biological target, a small focused subset of a larger collection of compounds can be identified and tested, often with results much better than selecting a similar number of compounds at random. …”
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  20. 260
    “…Through an analysis of these examples, we show that the modern-age discoveries stem from multimillennial experience passed on from our proto-chemist ancestors to us.…”
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