This volume contains selected papers presented at the Fourth Asian Symposium on Computer Mathematics. There are 39 peer-reviewed contributions together with full papers and extended abstracts by the four invited speakers, G.H. Gonnet, D. Lazard, W. McCune and W.-T. Wu, and these cover some of the most significant advances in computer mathematics, including algebraic, symbolic, numeric and geometric computation, automated mathematical reasoning, mathematical software, and computer-aided geometric design.
Author: Kiyotaka Toshimori
Publisher: Springer Science & Business Media
Release Date: 2009-04-28
Mammalian spermatozoa have complex structures. The structure-function relationship of sperm has been studied from various viewpoints. Accumulated evidence has shown that the sperm components undergo sequential changes from the beginning of spermatogenesis to the time of fertilization/embryogenesis. Structural analyses have been performed using various new techniques of light and electron microscopy as well as immunohistochemistry and immunocytochemistry in combination with specific probes such as antibodies against sperm components. Recently developed gene-manipulation techniques have accelerated investigations on the events that govern the relationship between the structure and molecular components of sperm. In addition, animal models with gene manipulations have been shown to exhibit various morphological and functional abnormalities that lead to infertility. In this book, I discuss the events that occur in the normal sperm head and govern the structure-function relationship from the time of spermatogenesis to that of fertilization or egg activation. In this regard, I describe dynamic modifications and maturation events occurring in sperm-head components and compare the outcomes of these events with the outcomes of their failure.
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Release Date: 2019-02-19
Genre: Technology & Engineering
This volume includes all the abstracts of the keynotes, oral contributions and posters presented by participants on the occasion of the Forum on Fisheries Science in the Mediterranean and the Black Sea (Fish Forum 2018). Organized by the GFCM at FAO headquarters, Rome, Italy, from 10 to 14 December 2018, in collaboration with technical partners, the Fish Forum 2018 is a first-of-the-kind event gathering scientists, researchers, engineers, academics, practitioners, managers and decision-makers from around the world to discuss and share knowledge on the latest developments in fisheries science. The material contained in this book of abstracts stems from the contributions received from participants and selected by an international scientific committee based on their technical quality and relevance. The abstracts are subdivided according to the three main themes of the Fish Forum 2018: Better science for better advice; Healthy seas and sustainable fisheries; and Economic analysis and technology for societal benefit. Each theme is introduced by a keynote presentation, followed by oral presentations and posters. These documents form the basis of the discussions held during parallel sessions and poster sessions of the Fish Forum 2018.
That notorious evening at Villa Diodati when Lord Byron challenged his contemporaries to write a ghost story, his summons brought forth a mad doctor intent on reanimation and a vampire drunk with bloodlust. The night modern horror was born was notoriously dark and stormy, as were the lives of those who wrote the most fearsome—yet beloved—tales in literature, for those so gifted were also cursed. Horrors, a graphic novel, reveals in gruesome detail how Mary Wollstonecraft, Bram Stoker, Edgar Allan Poe and other masters of the genre were haunted by their monstrous creations.
This new book presents the latest research in environmental microbiology which is area of interaction that studies the interaction of microorganisms with the environment. It includes the structure, activities and communal behaviour of microbial communities, microbial interactions and interactions with plants, animals and non-living environmental factors, population biology and clonal structure microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors growth and survival, modelling and theory development, microbial community genetics and evolutionary processes, microbial physiological, metabolic and structural diversity, pollution microbiology, extremophiles and life in extreme and unusual little-explored habitats, primary and secondary production, element cycles and biogeochemical processes and microbially-influenced global changes.