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A multiplicity of biotrophic micro-organisms interact with plants in nature, forming symbiotic relationships that range from mutualism to antagonism. Microorganisms that have adopted biotrophy as a lifestyle are able to colonize the plant and often to cross the plant cell boundaries by forming intracellular structures that are the site of nutrient uptake/exchange. To establish themselves within plant tissues, both mutualistic and pathogenic biotrophs need to overcome the plant defense response through an exchange of molecular signals. Our knowledge of the nature of these signals and their function in the interaction has rapidly increased over the last few years. This volume focuses on the genetic, molecular and cellular components involved in the communication between partners of well-known symbioses, but also reports on the advances for less studied systems.
Archaea represent a third domain of life with unique properties not found in the other domains. Archaea actively compete for environmental resources. They perceive themselves and can distinguish between ‘self’ and ‘non-self’. They process and evaluate available information and then modify their behaviour accordingly. They assess their surroundings, estimate how much energy they need for particular goals, and then realize the optimum variant. These highly diverse competences show us that this is possible owing to sign(aling)- mediated communication processes within archaeal cells (intra-organismic), between the same, related and different archaeal species (interorganismic), and betwee...
Bien que faisant l'objet de nombreux débats politiques, scientifiques et sociétaux, l'expansion de l'espèce humaine dans l'espace parait inévitable. Elle représente toutefois un défi majeur car elle s'accompagne d'un décalage très important entre l'histoire évolutive de l'humain et l'environnement dans lequel il sera contraint d'évoluer pour de longues périodes, voire potentiellement des années si ses adaptations physiologiques le permettent. Les nouveaux conquérants devront résoudre de nombreuses problématiques: la réduction ou l'absence de gravité pendant de longues périodes, les rayonnements cosmiques, la vie en confinement et les difficultés physiologiques liés à un ...
No. 1- directories of the society's members.
Thomas Sayre came with his family from England to Lynn, Massachusetts in the early 1630's. Among descendants of Thomas were clergymen, surgeons, attorneys, ambassadors, and representatives of almost every profession. Francis B., cowboy, professor of law, and ambassador, was son-in-law of former President Woodrow Wilson. Zelda was the wife of American novelist, F. Scott Fitzgerald, and subject of one of his books. David A. was a silversmith, banker, and founder of Lexington's Sayre School. Many Sayre descendants were taken by wars in service to America and never had the chance to win recognition for their inherent abilities. SAYRE FAMILY another 100-years, in a large part, focuses on the earl...
This book has been prepared under the auspice of the European Low Gravity Research Association (ELGRA). The main task of ELGRA is to foster the scientific community in Europe and beyond in conducting gravity and space-related research.This publication is dedicated to the science community, and especially to the next generation of scientists and engineers interested in space research and in the means to use Earth to reproduce the space environment. ELGRA provides a comprehensive description of space conditions and the means that have been developed on Earth to perform space environmental and (micro-) gravity related research. .The book covers ground-based research instruments and environments...
MURIEL MCCARTHY This volume originated from a seminar organised by Richard H. Popkin in Marsh's Library on July 7-8, 1994. It was one of the most stimulating events held in the Library in recent years. Although we have hosted many special seminars on such subjects as rare books, the Huguenots, and Irish church history, this was the first time that a seminar was held which was specifically related to the books in our own collection. It seems surprising that this type of seminar has never been held before although the reason is obvious. Since there is no printed catalogue of the Library scholars are not aware of its contents. In fact the collection of books by late seventeenth and early eighteenth century European authors on, for example, such subjects as biblical criticism, political and religious controversy, is one of the richest parts of the Library's collections. Some years ago we were informed that of the 25,000 books in Marsh's at least 5,000 English books or books printed in England were printed between 1640 and 1700.