Constructional Morphology and Evolution, H. Sch?fer; Norbert Schmidt-Kittler; Klaus Vogel
Автор: Brinkman Название: Morphology and Evolution of Turtles ISBN: 9400743084 ISBN-13(EAN): 9789400743083 Издательство: Springer Рейтинг: Цена: 13969.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Moreover it includes reports on important but poorly understood fossil turtle assemblages, provides historical perspectives on turtle research, and documents disease and variation in turtles.
Автор: Shapiro Название: Disordered Vertebral and Rib Morphology in Pudgy Mice ISBN: 3319431498 ISBN-13(EAN): 9783319431499 Издательство: Springer Рейтинг: Цена: 15372.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: ?This book presents results obtained from the whole mount preparations, radiological, and histological studies of 60 pu/pu and pu/+ mice from late embryo until 3 months of age. Most mice were in the embryo to 6 week age group where vertebral developmental changes are most marked. Although vertebral abnormalities have been identified as due to mutations in the delta-like 3 (Dll3) gene, it is evident that each mouse has differing structural abnormalities. The disorder is analogous to human congenital scoliosis, a common variant of which is spondylocostal dysplasia. The histological studies presented in this book include plastic embedded sections which allow for high level resolution not only of vertebrae, intervertebral discs, and ribs but also of associated spinal cord, nerve roots and ganglia. In addition an overview of embryo and neonatal development in mouse, chick and human vertebrae is provided to better assess how and where deviant pathoanatomy occurs. The book discusses the possible variables involved in creating final deformity beyond the gene abnormality itself.
Автор: Gandhi Dhara Название: Handbook on the Morphology of Common Grasses ISBN: 1771882492 ISBN-13(EAN): 9781771882491 Издательство: Taylor&Francis Рейтинг: Цена: 21437.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание:
The grass family is one of the largest and most diverse families in the plant kingdom and is of great economic value. Grasses provide human beings and domestic animals with the main necessities of life, add diversity to the landscape and stability to the ground surface, and also provide ornamental and amenity value. The present handbook is a pictorial resource guide to the identification of different common grasses in their early growth stage. In this book, 100 of the most common grasses (palatable and unpalatable) growing in the grasslands have been characterized on the basis of the vegetative characters of the seedling. A key to the identification of the grasses at their seedling stages is provided to help easily identify the grasses at their early stage of development.
Many of the grasses described in the book are cosmopolitan, and many grow worldwide. Terms used to describe a grass seedling are used with help of photographs. Different diagnostic features of the seedling--such as growth habits, types of vernation, nodes, internodes, leaf laminas, leaf tips, leaf sheaths, ligules, auricles, and collars--have been used for their identification. The descriptions and photographs enable users to successfully and easily identify these species in a field environment.
The book has been divided into two main sections. The first section covers the characteristic features of the caryopses. It includes light and scanning electron microscopic features and a diagnostic key to the identification of the species. The second section deals with grass seedling morphology and provides a key to the identification of the species on the basis of early vegetative features. Each of the sections includes an introduction, materials and methods, and results, supplemented with microphotographs representing the features of identification.
This handbook is the first of its kind to include so many grass species that can be authentically identified with the help of pictorial diagnostic features of the seedlings and caryopses. The identifying features are solely on the basis of morphological, micromorphological, and morphometric characters.
This handbook will be an important reference book of value to students in basic grass taxonomy or ecology classes as well as to academicians, researchers, pasture management practitioners, as well as professionals working in grassland restoration.
Автор: Sylwester Chyb Название: Atlas of Drosophila Morphology, ISBN: 0123846889 ISBN-13(EAN): 9780123846884 Издательство: Elsevier Science Рейтинг: Цена: 18528.00 р. Наличие на складе: Поставка под заказ.
Описание: The Atlas of Drosophila Morphology: Wild-type and Classical Mutants is the guide every Drosophila researcher wished they had when first learning genetic markers, and the tool they wish they had now as a handy reference in their lab research. Previously, scientists had only poor-quality images or sketches to work with, and then scattered resources online - but no single visual resource quickly at their fingertips when explaining markers to new members of the lab, or selecting flies to do their genetic crosses, or hybrids. . This alphabetized guide to Drosophila genetic markers lays flat in the lab for easy referencing. It contains high-resolution images of flies and the appropriate marker on the left side of each page and helpful information for the marker on the facing page, such as symbol, gene name, synonyms, chromosome location, brief informative description of the morphology, and comments on marker reliability. A companion website with updated information, useful links, and additional data provided by the authors complements this extremely valuable resource. . .
Annelida, mainly consisting of marine Polychaeta and in faunal and partly parasitic Clitellata, is one the most significant metazoan taxa. Its more than 20.000 described species invade nearly all habitats and play a central role in marine benthic systems as well as in terrestrial soil communities. Annelids include all soft-bodied segmented worm-like organisms and have been recognized as a separate "phylum" for almost 200 years.
Recently, evidence has been accumulated which shows that some of the groups formerly regarded as independent "phyla" such as Pogonophora (now recognized as Siboglinidae), Echiura, Myzostomida and perhaps Sipuncula, are most probably nothing else than greatly modified Annelida. The extreme morphological diversity found especially in Polychaeta displays the plasticity of a simple segmented organisation that basically is nothing else but a serial repetition of identical units. Thus, annelids are highly important to our understanding of fundamental questions about morphological and adaptive diversity, as well as clarifying evolutionary changes and phylogenetic relationships.
The book aims to summarize our knowledge on Polychaetes polychaetes and their allies and gives an overview of recent advances gained by studies that employed conventional and modern methods plus, increasingly and importantly, the use of molecular markers and computer-assisted kinship analyses. It also reflects the state of art in polychaete sciences and presents new questions and controversies. As such it will significantly influence the direction of research on Polychaeta and their related taxa.
Автор: Eric Bird Название: Coastal Cliffs: Morphology and Management ISBN: 3319290835 ISBN-13(EAN): 9783319290836 Издательство: Springer Рейтинг: Цена: 7182.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: Offering insight into the global occurrence, geomorphology, evolution, weathering and erosion of coastal cliffs and bluffs, this book treats stabilization and preservation of cliffs in detail. Mitigation of cliff hazards and preservation of scenery and scientific sites needs management based on thorough knowledge of the physical processes at work.
Описание: This thesis discusses the evolution of galaxies through the study of the morphology, kinematics, and star formation properties of a sample of nearby galaxies.
Автор: Joachim Mangelsdorf; Barbara Reimer; Karl Scheurma Название: River Morphology ISBN: 3642837794 ISBN-13(EAN): 9783642837791 Издательство: Springer Рейтинг: Цена: 11101.00 р. Наличие на складе: Есть у поставщика Поставка под заказ.
Описание: River Morphology deals with the interaction between flowing waters in rivers and their environment. Based on the representation of basic flow parameters, the geometry, classification and historic development of rivers are treated.
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