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The Swedish National Road Administration SNRA is responsible for the long term de-velopment of the road transport system, and spends large sums on road construction and 'operation and maintenance'. Improvements in efficiency which are small in per-centage terms therefore yield relatively large monetary effects. In order to create and maintain a strong and competitive road construction sector and a
Biodegradation is becoming an attractive mode of operation for eliminating toxic chemicals released from industrial processes or already present in the environment. One needs, however, not only to identify organisms capable of degrading such chemicals, but also to address the issue of whether these chemicals, after being degraded, will be toxic to the degrading organisms if present in high concent
Popular Abstract in English Popular Science Abstract In our daily routines, we use products and come across applications that involve mixtures of polymers and small amphiphilic molecules in water, for example detergents, pharmaceutics, foodstuffs, shampoos and paints. Polymers are very large molecules formed by smaller units that are repeated and connected. Amphiphilic molecules contain both one pThe research described in this thesis aims to understand the interactions between cationic poly(amidoamine) (PAMAM) dendrimers and small oppositely charged amphiphiles at the solid-liquid and air-liquid interfaces in relation to the bulk solution behavior. There is high interest in PAMAM dendrimers because they are well-defined polymers with a hierarchical architecture which makes them promising m
Boken innehåller en bred skildring av Ernst Jünger och hans närmaste vänkrets under slutfasen av Weimar-republiken. Bland de arbeten av Jünger som diskuteras återfinns "Das abenteuerliche Herz" (1929, "Die totale Mobilmachung" (1930) och "Der Arbeiter" (1932). Till persongalleriet hör Carl Schmitt, Ernst Niekisch, Friedrich Georg Jünger, Friedrich Hielscher med flera. Historien om Ernst Jünger och
The fundamental limits of the gain, efficiency and Q-value of an antenna put severe restrictions on small antennas. In this paper it is discussed how one can avoid low efficiency and high Q-values in small antennas by examining the far-field pattern of the antenna. The analysis is based on the expansion of the electromagnetic fields in terms of vector spherical harmonics. © 2007 IEEE.
The dominating part of electron injection from the transition metal complex Ru(dcbpy)2(NCS)2 into a titanium dioxide nanocrystalline film proceeds extremely rapidly from the initially populated, vibronically nonthermalized, singlet excited state of the molecule. Ultrafast transient absorption measurements with laser pulses of the order of ~30 fs have been performed
Popular Abstract in Swedish Konventionella neuropsykologiska test, och begåvningstest, tar sällan hänsyn till att begåvningen "filtreras" genom individens personlighet vid utförandet av uppgifterna. Två lika begåvade personer (dvs med samma IQ) kan utföra samma test på helt olika sätt beroende på t.ex att den ena är impulsiv och snabb och den andra eftertänksam och försiktig. Detta medför skillnad"Personality determines very largely the use a person makes of his intellectual gifts" (Eysenck, 1988). Computerization of neuropsychological tests has made possible a detailed analysis of both quantitative and qualitative aspects of a person´s test performance. Factor analyses of test data generally bring out two main factors of performance: speed and accuracy, representing both the intellectual
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The extraction of semantic propositions has proven instrumental in applications like IBM Watson (Ferrucci, 2012) and in Google’s knowledge graph (Singhal, 2012). One of the core components of IBM Watson is the PRISMATIC knowledge base consisting of one billion propositions extracted from the English version of Wikipedia and the New York Times (Fan et al., 2010). However, extracting the proposition
This thesis addresses micromechanical modeling of materials using computational homogenization. On this topic, theoretical and computational issues are discussed, and numerical investigations of different material systems are performed. The material systems considered are; metal matrix composites, metal sheets with stiff inclusions, metal sheets containing voids, sand with inclusions of gravel and
Perikles is usually seen as a great statesman and clever leader of the Athenians. In the mid fifth century BC, he seems however to have been in serious political trouble and may well have been in danger of losing the struggle for power and of being ostracised. The fact that his Incentives changed considerably at this point in time is ignored in traditional historical accounts. In contrast, we see
Popular Abstract in Swedish Ny innovativ processdesign har resulterat i två processer som kan göra tillverkningen av förnyelsebara plaster och bränslen konkurrenskraftiga mot dagens fossila alternativ. Den nya designen har gjort vissa processteg upp mot 40 gånger så effektiva som med dagens teknik. Vikten av att ställa om dagens samhälle, som till stor del är beroende av fossila resurser, till eIt is important to replace fossil resources such as oil, coal and natural gas with renewable raw materials for the production of materials and fuels in order to reduce environmental impact. Furthermore, these raw materials should preferably be residues, e.g. agricultural or forest residues, in order not to compete with the production of human food and animal feed. High molecular weight arabinoxyla
