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Topics on Real and Complex Singularities
A phenomenon which appears in nature, or human behavior, can sometimes be explained by saying that a certain potential function is maximized, or minimized. For example, the Hamiltonian mechanics, soapy films, size of an atom, business management, etc. In mathematics, a point where a given function attains an extreme value is called a critical point, or a singular point. The purpose of singularity theory is to explore the properties of singular points of functions and mappings. This is a volume on the proceedings of the fourth Japanese–Australian Workshop on Real and Complex Singularities held in Kobe, Japan. It consists of 11 original articles on singularities. Readers will be introduced t...
Real Analytic and Algebraic Singularities
This book contains a collection of papers covering recent progress in a number of areas of singularity theory. Topics include blow analyticity, recent progress in the research on equivalence relations of maps and functions, sufficiency of jets, and the transversality theorem. . Geometric and analytic studies of partial differential equations have been developed independently of one another, but the shock wave solutions appearing in natural phenomena are not well understood. Singularity theory may unify these studies and a survey based on this viewpoint is presented in which a new notion of weak solution is introduced. There are also reports on the recent progress in Zariski's conjecture on multiplicities of hypersurfaces, transcendency of analytic sets and on the topology of weighted homogeneous polynomials. This book will be of particular interest to specialists in singularities, partial differential equations, algebraic geometry and control theory.
Receptor usage and pathogenesis in acute and chronic viral infection
In the first phase of the viral life cycle, the virus enters cells using a specific cell surface receptor. Many viruses use multiple receptors: some of which are unique to a certain cell type, while others are ubiquitous in many cell types. Depending on the receptors used, the viral cell tropism is determined, which may result in the characteristic distribution of virus- infected cells/tissues. Obviously, virus entry is not the whole story. After the virus enters, various cellular proteins interact with it – some support virus replication, while others inhibit it. The intrinsic anti-viral cellular machinery differs among cell types; thus, viral cell tropism based on the receptor usage play...
Molecular Neurovirology
Neurovirology, the study of viral infection of the ner vous system, has evolved at the interface of three of the most rapidly unfolding fields of investigation-neurobiology, vi rology, and immunology. In all three, increasing knowledge about the molecular structure of surface receptors, how in tracellular messages are transmitted, and how diversity is regulated genetically is provided, along with the techniques of molecular biology. This promises to give us knowledge not only about the process of infection and the complex host and viral determinants of neuroinvasiveness and neurovirulence, but eventually it will provide the background from which to engineer vaccines and to devise novel thera...
The Picornaviruses
A springboard for developing new approaches to understanding, preventing, and treating picornaviral diseases. • Examines the most current breakthroughs as well as the challenges that lie ahead in picornavirus research; encapsulates current knowledge of the molecular biology, evolution, and pathogenesis of this large family of viruses; and, examines the diseases that these viruses cause and the latest vaccines and antiviral drugs to prevent and control those diseases. • Explores the structural and mechanistic bases of picornavirus replication, highlighting new insights about the host cell interactions needed for virus growth; and, illustrates how the regular occurrence of mutations, typical of viruses with RNA as genetic material, generates the quasispecies dynamics that underlie viral fitness. • Focuses on picornaviruses that cause disease, examining pathogenicity and innate and acquired immune responses against infection as well as the latest vaccine and antiviral drug strategies.
Agricultural Sciences for Human Sustainability
「食料・バイオマス生産」「環境保全」「食の安全・機能性」など、世界が直面する諸課題に対し、農学先進校・北大農学院の各分野ではどのような研究が行われているのか。札幌農学校精神を今に伝える「農学概論テキスト」。
