The Synthetic Ones

Author: Lionel Roberts
Publisher: Hachette UK
ISBN: 1473203724
Size: 12.19 MB
Format: PDF, ePub
View: 4847
Download Read Online

The Synthetic Ones from the Author: Lionel Roberts. Is there a Destiny? Does Fate impose a limit? What Barrier stands between man and the creation of life? Since the legendary failure of the ill-fated Frankenstein, man has tried time and time again to pass those limits. He has created androids, clumsy robots of flesh and blood. He has made men of metal and servants of plastic, with wheels for limbs and magnetic tapes for voices. Man has made things by cross breeding the animal kingdom and destroying Nature's intentions...but man has never yet made man. Or has he? Forbisher thought that he had the answer. It wasn't a clumsy Synthetic. It wasn't an Android, or a Robot, it was a real flesh and blood human being. The beautiful woman in his arms was the product of a laboratory experiment, not the result of a natural biological process. But how could he prove it?

2 Substituted 1 3 Dioxan 5 Ones

Size: 77.74 MB
Format: PDF, Docs
View: 1504
Download Read Online

2 Substituted 1 3 Dioxan 5 Ones from the Author: . This dissertation deals primarily with synthesis, reactions and synthetic applications of 2-substituted- 1,3-dioxan-5-ones. This class of compounds could be viewed as synthetic equivalents of natures building block--1,3-dihydroxyacetone and could be used in construction of many polyoxygenated natural products. A general, simple, cheap and easy to scale-up synthesis of 2-substituted-1,3dioxan-5-ones was developed. The yields of this three-step procedure, starting form commercially available tris(hydroxymethyl)nitromethane, ranged from 40 to 90%. The exploration of the chemistry of 2-substituted-1,3-dioxan-5-ones was focused on carboanion chemistry of these compounds. 2-Substituted-1,3-dioxan-5-ones were shown to easily form corresponding lithium, boron and titanium enolates. The 2-'tert'-butyl-2-methyl-1,3-dioxan-5-one was deprotonated enantioselectively in 90% e.e. with the aid of chiral lithium amide derived from (R)- or (S)-'N'-(2,2,2-trifluoroethyl)-1-phenylethylamine. This successful outcome was a result of extensive methodological studies. The enolates reacted readily with electrophiles: reactions with aldehydes provided 'anti' aldols in modest to high selectivities in cases of lithium and boron enolates and 'syn' aldols in case of titanium enolate. The enolates could be conveniently trapped as trimethylsilyl enol ethers or as enol acetates, however they failed to react with alkylating agents. The problem was solved using Enders' chiral hydrazone method. The synthetic utility of 2-substituted-1,3-dioxan-5-ones was illustrated in syntheses of (+)-frontalin and several protected ketohexoses. Additionally, the kinetics of deprotonation of a simple ketone with lithium diisopropylamide was investigated in order to shed some light on the mechanism of this type of reaction. The reaction was shown to be first order in ketone and half order in the base, and half order in the base, which suggests a monomer-based mechanism.

Food Colorants

Author: Carmen Socaciu
Publisher: CRC Press
ISBN: 9781420009286
Size: 56.44 MB
Format: PDF, Docs
View: 5639
Download Read Online

Food Colorants from the Author: Carmen Socaciu. Drawing on the expertise of internationally known, interdisciplinary scientists and researchers, Food Colorants: Chemical and Functional Properties provides an integrative image of the scientific characteristics, functionality, and applications of color molecules as pigments in food science and technology, as well as their impact on health. The book emphasizes the structure-function relationships of pigment molecules to explain biosynthesis, modifications and degradation during storage and processing, and the effect of these changes on quality and safety. Understanding the rate and nature of degradation assists in selecting optimum processing parameters. Beginning with an overview of the physics and biochemistry of color, the book focuses on the mechanics of pigment stability and bioavailability, and antioxidant and pro-oxidant action. It reviews the influence of pigments on health and metabolism, incorporating results of in vivo and in vitro studies. It addresses the occurrence of pigment in food matrices and their stability during processing and storage. Conventional technologies as well as new, environmentally friendly methods are presented along with recent advances in biotechnology to produce colorants. There is also a chapter on novel approaches to the biosynthesis of colorants by microalgae, microorganisms, and genetic engineering. Contributions give significant attention to analytical methods and recent advances in detecting both natural and synthetic colorants, their quality, quantity, and degradation during processing and storage. The book rounds out its comprehensive coverage with a look at quality and safety risk assessments and international regulations, as well as lists of formerly and newly approved colorants and additives. Peer reviewed contributions and critical evaluations ensure a concise, systematic presentation of the relationships between the chemical nature and functional properties of various natural and synthetic pigments used to color food.


Author: Information Resources Management Association
Publisher: IGI Global
ISBN: 146663605X
Size: 16.55 MB
Format: PDF, ePub, Docs
View: 6922
Download Read Online

Bioinformatics from the Author: Information Resources Management Association. "Bioinformatics: Concepts, Methodologies, Tools, and Applications highlights the area of bioinformatics and its impact over the medical community with its innovations that change how we recognize and care for illnesses"--Provided by publisher.

Competing Comparative Constructions In Europe

Author: Thomas Stolz
Publisher: Walter de Gruyter
ISBN: 3050064994
Size: 30.18 MB
Format: PDF, Mobi
View: 2598
Download Read Online

Competing Comparative Constructions In Europe from the Author: Thomas Stolz. This in-depth areal-typological study analyzes the grammatical means which are employed in the languages of Europe to express the comparative of inequality/superiority. The extant theories and hypotheses about the morphosyntactic structure and the cross-linguistic distribution of construction types are reviewed. The behavior of comparatives under the conditions of language contact is discussed. Data from more than 170 standard and nonstandard varieties of European languages are scrutinized systematically. The synchronic picture is complemented by a chapter on the diachrony of comparative constructions. The European facts are compared to those of the geographically adjacent Asian and African regions. It is argued that cross-linguistic investigations must take account also of so-called secondary options. These secondary options suggest strongly that the supposedly dominant role of the particle comparative cannot be upheld for Europe. Moreover, only the secondary options allow us to draw isoglosses which cross the borders between Europe and Asia (and Africa).

Systems Biology And Synthetic Biology

Author: Pengcheng Fu
Publisher: John Wiley & Sons
ISBN: 9780470437971
Size: 24.69 MB
Format: PDF, ePub, Docs
View: 2520
Download Read Online

Systems Biology And Synthetic Biology from the Author: Pengcheng Fu. The genomic revolution has opened up systematic investigations and engineering designs for various life forms. Systems biology and synthetic biology are emerging as two complementary approaches, which embody the breakthrough in biology and invite application of engineering principles. Systems Biology and Synthetic Biology emphasizes the similarity between biology and engineering at the system level, which is important for applying systems and engineering theories to biology problems. This book demonstrates to students, researchers, and industry that systems biology relies on synthetic biology technologies to study biological systems, while synthetic biology depends on knowledge obtained from systems biology approaches.

Philosophers Of Capitalism

Author: Edward Wayne Younkins
Publisher: Lexington Books
ISBN: 9780739110775
Size: 41.28 MB
Format: PDF, ePub
View: 6634
Download Read Online

Philosophers Of Capitalism from the Author: Edward Wayne Younkins. Philosophers of Capitalism provides an interdisciplinary approach, attempting to discover the feasibility of an integration of Austrian Economics and Ayn Rand's philosophy of Objectivism. Edward W. Younkins supplies essays presenting the essential ideas of Carl Menger, Ludwig von Mises, and Ayn Rand, as well as scholarly essays discussing the theorists and the interaction of their theories.

Image Analysis And Processing Iciap 2015

Author: Vittorio Murino
Publisher: Springer
ISBN: 3319232312
Size: 53.56 MB
Format: PDF, ePub, Mobi
View: 3101
Download Read Online

Image Analysis And Processing Iciap 2015 from the Author: Vittorio Murino. The two-volume set LNCS 9279 and 9280 constitutes the refereed proceedings of the 18th International Conference on Image Analysis and Processing, ICIAP 2015, held in Genoa, Italy, in September 2015. The 129 papers presented were carefully reviewed and selected from 231 submissions. The papers are organized in the following seven topical sections: video analysis and understanding, multiview geometry and 3D computer vision, pattern recognition and machine learning, image analysis, detection and recognition, shape analysis and modeling, multimedia, and biomedical applications.

Synthetic Aspects

Author: Philip Page
Publisher: Academic Press
ISBN: 9780080538198
Size: 65.61 MB
Format: PDF, Docs
View: 6262
Download Read Online

Synthetic Aspects from the Author: Philip Page. During the last few years, the impact of organosulfur chemistry, especially in the areas of stereocontrolled processes, has led to an explosion of interest in the field. This book is intended to provide in-depth coverage of topics of interest throughout the whole range of organic sulfur chemistry, including bio-organic, physical organic, and synthetic aspects. This books covers such topics as: Synthetic transformations involving thiiranium ion intermediates Optically active (-ketosulfoxides and analogues in asymmetric synthesis Trends in the chemistry of 1,3-dithioacetals