Filtyp
This introduction to the biology of standing waters integrates the effects of abiotic constraints and biotic interactions at both the population and community level, and examines how the distribution and success of different organisms in this freshwater habitat can be explained and predicted
Popular Abstract in Swedish Tre av huvudets blodkärlsregioner - hjärnans, den h rda hjärnhinnans och tinningens puls dror, har undersökts med avseende p förekomst av nerver inneh llande signalsubstanser som kallas neuropeptider. Tv av dessa är substans P (SP) och kalcitonin gen-relaterad peptid (CGRP) vilka finns i nerver som förmedlar känselupplevelser, till exempel smärta. Andra är neuropeptid YThe sensory neuropeptides substance P (SP) and calcitonin gene-related peptide (CGRP) are present in human cerebral, meningeal and temporal arteries, as are peptides associated with the sympathetic (neuropeptide Y, NPY) and parasympathetic (vasoactive intestinal peptide, VIP) nervous system. NPY is a vasoconstrictor in cerebral and meningeal arteries and potentiates noradrenaline (NA) as a vasocon
In both the academic literature and in the media there have been concerns expressed about the level of surveillance technologies used to facilitate security and its effect upon privacy. Government policies in the USA and the UK are continuing to increase surveillance technologies to counteract perceived terrorist threats. Reflecting upon Ashby’s Law of Requisite Variety, the authors conclude that
Christopher Polhem (1661-1751), called the father of Swedish mechanics, is the most famous figure in Swedish history of technology and our nation's foremost inventor ever. Remarkably enough, a close survey in a monograph has never been written on this inventor who in many ways initiated the technical and industrial development of Sweden. In this project will Polhem for the first time get a broad a
Though there is a very large literature examining whether energy use Granger causes economic output or vice versa this literature is fairly inconclusive. Almost all existing studies use relatively short time series or panels with a relatively small time dimension. Additionally, many recent papers continue to use what seem to be misspecified models. We apply Granger causality and cointegration tech
Abstract in French L'AUTEUR RAPPELLE COMMENT L'EAU PARTICIPE AUX PHENOMENES QUI CONDUISENT A LA DETERIORATION DU BETON ET INDIQUE DES EXEMPLES DE CONDITIONS D'HUMIDITE CRITIQUE DANS LES PHENOMENES DE REACTIONS ALCALI-SILICE, D'EFFLORESCENCES, ET DE CORROSION. IL DECRIT LE COMPORTEMENT HYGROTHERMIQUE DU BETON A L'AIDE DES LOIS DE CONSERVATION DE L'ENERGIE ET DE LA MASSE. DANS LE CAS DU BETON DURCI,
The article discusses how the practitioner’s – i. e. the actor’s − knowledge and experiences could form a base for artistic research. As an example the author uses actor Ann Petrén’s Master thesis and his own PhD. The author presents how the term lore could offer a useful concept to describe the different levels of bodily experiences, knowledges and even theories present in the actor’s work. The d
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Popular Abstract in Swedish Modellering och krav för automation av gradningsprocessAn increasing number of robots have been used for the finishing of castings during recent years. This is mainly due to developments to overcome problems that restricted their use during the past decade. The major difficulties have been the need to control reaction forces during metal removing by grinding operations and the lack of tools designed specially for robots. The elimination of these two p
