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A facile synthesis of branched silver nanowire structures and its applications in surface-enhanced Raman scattering

We report a facile method of preparing novel branched silver nanowire structures such as Y-shaped, K-shaped and other multi-branched nanowires. These branched nanostructures are synthesized by reducing silver nitrate (AgNO3) in polyethylene glycol (PEG) with polyvinglpyrrolidone (PVP) as capping agent. Statistical data indicate that for the "y" typed branched nanowire, the branches grow out from t

Ankle fractures. Outcome and rehabilitation. A physiotherapeutic perspective.

The overall aim of this work was to evaluate symptoms, subjectively scored function and physical outcome in patients with surgically treated ankle fractures. Another aim was also to evaluate the effects of a standardised but individually suited supervised training program. In all, 209 patients with surgically treated ankle fractures were included in three different samples: 54 individuals aged 18-

Adsorption of low-density lipoprotein, its oxidation, and subsequent binding of specific recombinant antibodies-an in situ ellipsometric study.

BACKGROUND: Low-density lipoprotein (LDL) particles accumulate in the arterial wall and become oxidized during atherogenesis, leading to the formation of atherosclerotic plaques. The major protein of the LDL particle, apolipoprotein B-100 (apoB-100), becomes fragmented during oxidation and a target for the immune system. METHODS: In this study we used in situ ellipsometry to monitor the adsorption

Metaphors and Norms - Understanding Copyright Law in a Digital Society

Popular Abstract in Swedish Vad är det med upphovsrätten som inte fungerar i det digitala samhället? Vad är det som gör att miljoner människor just i fallet med fildelning tycker att det är okej att bryta mot lagen? Och, sett från det omvända perspektivet, vad är det som gör att lagen inte klarar av att anpassa sig efter de nya digitala praktikerna? Varför denna inlåsning och detta tillbakablickanThis is a compilation thesis in the sociology of law, which analyses copyright law in three steps; the legal norms, the social norms and the underlying conceptions in their metaphorical representation. These three steps assist in answering the overarching question: "How do legal and social norms relate to each other in terms of the conceptions from which they emanate or by which they are construct

Environmental forcing and genetic differentiation in subdivided populations

Questions: How will genetic differentiation and genetic drift in spatially structured populations be affected by different classes of autocorrelated environmental noise? How does dispersal interact with fluctuations generated from the demographic and environmental forcing in shaping the neutral genetic patterns? Model and key assumptions: Populations are regulated locally by density-dependent feed

Polyketide synthesis genes associated with toxin production in two species of Gambierdiscus (Dinophyceae).

Marine microbial protists, in particular, dinoflagellates, produce polyketide toxins with ecosystem-wide and human health impacts. Species of Gambierdiscus produce the polyether ladder compounds ciguatoxins and maitotoxins, which can lead to ciguatera fish poisoning, a serious human illness associated with reef fish consumption. Genes associated with the biosynthesis of polyether ladder compounds

Ethanol production from mixtures of wheat straw and wheat meal

Background: Bioethanol can be produced from sugar-rich, starch-rich (first generation; 1G) or lignocellulosic (second generation; 2G) raw materials. Integration of 2G ethanol with 1G could facilitate the introduction of the 2G technology. The capital cost per ton of fuel produced would be diminished and better utilization of the biomass can be achieved. It would, furthermore, decrease the energy d

Adaptation and Learning for Manipulators and Machining

This thesis presents methods for improving the accuracy and efficiency of tasks performed using different kinds of industrial manipulators, with a focus on the application of machining. Industrial robots offer a flexible and cost-efficient alternative to machine tools for machining, but cannot achieve as high accuracy out of the box. This is mainly caused by non-ideal properties in the robot joint

Analysis of subsurface microstructure and residual stresses in machined Inconel 718 with PCBN and Al2O3-SiCw tools

Subsurface microstructural alterations and residual stresses caused by machining significantly affect component lifetime and performance by influencing fatigue, creep, and stress corrosion cracking resistance. Assessing the surface quality of a machined part by characterizing subsurface microstructural alterations and residual stresses is essential for ensuring part performance and lifetime in aer

High precision measurements using high frequency gigahertz signals

Generalized lock-in amplifiers use digital cavities with Q-factors as high as 5 × 108 to measure signals with very high precision. In this Note, we show that generalized lock-in amplifiers can be used to analyze microwave (giga-hertz) signals with a precision of few tens of hertz. We propose that the physical changes in the medium of propagation can be measured precisely by the ultra-high precisio

Tailoring native compilation of Java for real-time systems

Popular Abstract in Swedish De vardagliga ting som omger oss, allt från leksaker till bilar, såväl som den utrustning som används i tillverkningen av dem innehåller ett växande antal inbyggda datorer. Inbyggda system är ofta ansvariga för kritisk funktionalitet, vilket leder till att en mängd tids- och resurskrav måste uppfyllas. Industriell konkurrens och det ständigt växande förhållandet mellan Our everyday appliances ranging from toys to vehicles, as well as the equipment used to manufacture them, contain an increasing number of embedded computers. Embedded systems software often implement functionality that is crucial for the operation of the device, resulting in a variety of timing requirements and resource utilization constraints to be fulfilled. Industrial competition and the ever i

Chemotherapy in Ewing's sarcoma. The Scandinavian Sarcoma Group experience

During the past 15 years the Scandinavian Sarcoma Group has treated 140 patients with Ewing's sarcoma. Two protocols have been used. SSG IV included 52 patients between 1984 and 1990 and SSG IX, 88 patients since 1990. After 5 years of treatment, local recurrences occurred in 19% of the patients (M0 + M1) in the SSG IV group and 10% in the SSG IX group. Distant metastases developed in 57% of the M