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Agriculture Decisions
  • Language: en
  • Pages: 1218

Agriculture Decisions

  • Type: Book
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  • Published: 1988
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  • Publisher: Unknown

Up to 1988, the December issue contains a cumulative list of decisions reported for the year, by act, docket numbers arranged in consecutive order, and cumulative subject-index, by act.

The Second Jurassic Dinosaur Rush
  • Language: en
  • Pages: 361

The Second Jurassic Dinosaur Rush

The so-called “Bone Wars” of the 1880s, which pitted Edward Drinker Cope against Othniel Charles Marsh in a frenzy of fossil collection and discovery, may have marked the introduction of dinosaurs to the American public, but the second Jurassic dinosaur rush, which took place around the turn of the twentieth century, brought the prehistoric beasts back to life. These later expeditions—which involved new competitors hailing from leading natural history museums in New York, Chicago, and Pittsburgh—yielded specimens that would be reconstructed into the colossal skeletons that thrill visitors today in museum halls across the country. Reconsidering the fossil speculation, the museum displ...

Analysis of Pesticides in Ground and Surface Water II
  • Language: en
  • Pages: 230

Analysis of Pesticides in Ground and Surface Water II

Public concern is being increasingly directed to pesticides and their residues in ground and surface waters. Water - one of the necessities of life - has to be kept clean for man and the environment. Part I and II of this book describe in an authoritative way all aspects of modern analysis of pesticides in water by the consequent use of hyphenated techniques like GC-AED or HPLC-MS.

Liquid Chromatography
  • Language: en
  • Pages: 654

Liquid Chromatography

  • Type: Book
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  • Published: 1998-09-01
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  • Publisher: CRC Press

This volume comprehensively relates developments, principles, and applications of combined liquid chromatography-mass spectrometry and other techniques such as capillary electrophoresis and supercritical fluid chromatography combined with mass spectrometry. It covers historical developments, currently important interfaces and technologies, and LC-MS applications in environmental analysis, pharmaceuticals and bioanalysis, and additional fields. It offers in-depth coverage of interfaces and technologies currently important in the laboratory, especially electrospray and APCI, contains an expanded applications section, and provides over 2200 references, tables, equations, and drawings.

Now Is the Time to Collect
  • Language: en
  • Pages: 377

Now Is the Time to Collect

"A narrative microhistory of the Field Museum of Natural History's groundbreaking expedition to hunt and preserve rare African animal specimens for its collection before it went extinct due to modern progress and natural selection, a common view among natural historians as the 1800s came to a close"--

Official Register of the United States
  • Language: en
  • Pages: 1622

Official Register of the United States

  • Type: Book
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  • Published: 1901
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  • Publisher: Unknown

None

Current Practice of Gas Chromatography-Mass Spectrometry
  • Language: en
  • Pages: 530

Current Practice of Gas Chromatography-Mass Spectrometry

  • Type: Book
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  • Published: 2001-04-04
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  • Publisher: CRC Press

This volume details the principles and instrumentation of gas chromatography-mass spectrometry (CG-MS), and outlines industrial, environmental, pharmaceutical, clinical, toxicological, forensic and food-related applications, revealing findings from the laboratories of 40 contributing scientists around the world using GC-MS in practice. It describes upstream and downstream applications of GC-MS in the petroleum industry and identifies chlorinated compounds in the environment with quadrupole ion-trap technology and high-resolution sector instruments.

Sampling and Sample Preparation in Field and Laboratory
  • Language: en
  • Pages: 1170

Sampling and Sample Preparation in Field and Laboratory

  • Type: Book
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  • Published: 2002-09-09
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  • Publisher: Elsevier

This title is the first comprehensive book on sampling and modern sample preparation techniques and has several main objectives: to facilitate recognition of sample preparation as both an integral part of the analytical process; to present a fundamental basis and unified theoretical approach for the professional development of sample preparation; to emphasize new developments in sample preparation technology; and to highlight the future impact of sample preparation on new directions in analytical science, particularly automation, miniaturization and field implementation. Until recently, there has been relatively little scientific interest in sampling and sample preparation, however this situ...

Carnivoran Evolution
  • Language: en

Carnivoran Evolution

Members of the mammalian clade Carnivora have invaded nearly every continent and ocean, evolving into bamboo-eating pandas, clam-eating walruses and of course, flesh-eating sabre-toothed cats. With this ecological, morphological and taxonomic diversity and a fossil record spanning over sixty million years, Carnivora has proven to be a model clade for addressing questions of broad evolutionary significance. This volume brings together top international scientists with contributions that focus on current advances in our understanding of carnivoran relationships, ecomorphology and macroevolutionary patterns. Topics range from the palaeoecology of the earliest fossil carnivorans to the influences of competition and constraint on diversity and biogeographic distributions. Several studies address ecomorphological convergences among carnivorans and other mammals with morphometric and Finite Element analyses, while others consider how new molecular and palaeontological data have changed our understanding of carnivoran phylogeny. Combined, these studies also illustrate the diverse suite of approaches and questions in evolutionary biology and palaeontology.

Theory of Graded-Bandgap Thin-Film Solar Cells
  • Language: en
  • Pages: 118

Theory of Graded-Bandgap Thin-Film Solar Cells

Thin-film solar cells are cheap and easy to manufacture but require improvements as their efficiencies are low compared to that of the commercially dominant crystalline-silicon solar cells. An optoelectronic model is formulated and implemented along with the differential evolution algorithm to assess the efficacy of grading the bandgap of the CIGS, CZTSSe, and AlGaAs photon-absorbing layer for optimizing the power-conversion efficiency of thin-film CIGS, CZTSSe, and AlGaAs solar cells, respectively, in the two-terminal single-junction format. Each thin-film solar cell is modeled as a photonic device as well as an electronic device. Solar cells with two (or more) photon-absorbing layers can also be handled using the optolelectronic model, whose results will stimulate experimental techniques for bandgap grading to enable ubiquitous small-scale harnessing of solar energy.