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4 produkter
4 produkter
1 304 kr
Skickas inom 5-8 vardagar
This work provides a unified theory that addresses the important problem of the origin and maintenance of genetic variation in natural populations. With modern molecular techniques, variation is found in all species, sometimes at astonishingly high levels. Yet the forces that maintain variation within and between species have been difficult subjects of study. Because they act very weakly and operate over vast time scales, scientists must rely on indirect inferences and speculative mathematical models. The author's research in molecular genetics, evolution, and bio-mathematics has enabled him to draw on his work, and present a coherent and valuable view of the field. The book is divided into three parts. The first addresses protein evolution, DNA evolution, and molecular mechanisms, reviewing the experimental observations on genetic variation. The second gives a unified treatment of the mathematical theory of selection in a fluctuating environment. The final section combines the earlier assessments in a treatment of the scientific status of two competing theories for the maintenance of genetic variation.
4 160 kr
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Written by one of the world's foremost authorities in the chemical bond, this textbook is ideal for courses on chemical bonding in chemistry departments at the senior/first year graduate level and can also be used to supplement inorganic survey courses needing an increased focus on bonding. The ideal course will contain the word "Bonding" in the course title, e.g. Chemical Bonding. The text starts with the basic principles of bonding and proceeds to advanced level topics in the same volume. It provides undergraduate (and 1st year graduate) students with an introduction to models and theories of chemical bonding and geometry as applied to the molecules of the main group elements. It gives students an understanding of how the concept of the the chemical bond has developed from its earliest days, through Lewis' brillant concept of the electron pair bond, up until the present day. The texts also elucidates the relationships between these various models and theories. Particular emphasis is placed on the valence-shell electron pair (VSEPR) and ligand close packing (LCP) models as well as the analysis of electron density distributions by the atoms in molecules (AIM) theory.The book is ideal for courses specifically devoted to bindng or to supplement inorganic chemistry courses at both the intermediate and adavanced levels.
3 370 kr
Skickas inom 3-6 vardagar
Written by one the world's foremost authorities on the chemical bond, this textbook is ideal for courses on chemical bonding in chemistry departmetns at the senior/first year graduate level and can also be used to supplement inorganic survey courses needing an increased focus on bonding. The ideal course will contain the word "Bonding" in the course title, e.g. Chemical Bonding. The text starts with the basic principles of bonding and proceeds to advanced level topics in the same volume. It provides undergraduate (and 1st year graduate) students with an introduction to models and theories of chemical bonding and geometry as applied to the molecules of the main group elements. It gives students an understanding of how the concept of the chemical bond has developed from its earliest days, through Lewis' brillant concept of the electron pair bond, up until the present day. The texts also elucidates the relationships between these various models and theories. Particular emphasis is placed on the valence-shell electron pair (VSEPR) and ligand close packing (LCP) models as well as the analysis of electron density distributions by the atoms in molecules (AIM) theory.The book is ideal for courses specifically devoted to bonding or to supplement inorganic chemistry courses at both the intermediate and advanced levels.
1 855 kr
Skickas inom 5-8 vardagar
This is a concise yet comprehensive practical manual, enabling all those involved in the diagnosis of disease, caused by parasites, to provide both a competent and up-to-date service. There is also sufficient information on the biology of parasites provided to ensure that the book is a valuable resource for educational courses teaching parasitology in both the developed and devloping Worlds.