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Effect of high hydrostatic pressure on small oxygen-related clusters in silicon: LVM studies

Local vibrational mode (LVM) spectroscopy is used to explore the effect of high hydrostatic pressure (HP) on the formation of small oxygen-related clusters (dimers, trimers, thermal donors, and C-O complexes) at 450degreesC and 650degreesC in Cz-Si crystals with different impurity content and prehistory. It is found, in agreement with previous studies, that HP enhances the oxygen clustering in Cz-

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Popular Abstract in Swedish Denna studie undersöker hur talparagrafen (le paragraphe oral), såsom den definierats av Morel och Danon-Boileau 1998, struktureras och används i L1 franska, i L1 svenska och i L2 franska hos två svenska avancerade inlärare. Den undersökta korpusen består av sju informella och spontana endolingvala och exolingvala samtal. Studien är både kontrastiv och longitudinell i dThis study examines the structure and the use of the speech paragraph (le paragraphe oral), as defined by Morel and Danon-Boileau 1998, in L1 French, in L1 Swedish and in the L2 French production of two advanced Swedish learners. The corpus examined consists of seven informal spontaneous endolingual and exolingual conversations. The study is not only contrastive, but also longitudinal, in the sens

Effects of hyperbaric oxygen treatment on axonal outgrowth in sciatic nerve grafts in rats

We studied the effect of hyperbaric oxygen treatment on axonal outgrowth in grafts of sciatic nerves in 40 rats. The sciatic nerve was transsected and a 10 mm long segment from the opposite side was immediately sutured in as a nerve graft. Postoperatively 17 animals were treated with 100% oxygen at 3.2 atmospheres absolute pressure for 45 minutes and the treatment was repeated at four and eight ho

Leka, lära, öva, arbeta, verkskapa : Elsa Köhler en österrikisk aktivitetspedagog i Sverige

Popular AbstractBarnomsorg- och skolakommittén fick i augusti 1996 uppdraget att utarbeta ett samlat måldokument för förskolans s.k. sexårsverksamhet och för det obligatoriska skolväsendet. I de två betänkandena –Växa i lärande (SOU 1997:21) och Att erövra omvärlden (SOU 1997:157) – anknyter kommittén till 1946 års skolkommissions tankar om skolans inre arbete, i sin vision av den svenska skolans This thesis is mainly about the life and work of the Austrian teacher and psychologist Elsa Köhler (1879-1940), but also about the work of her followers on the Swedish West coast. It traces the influences of pedagogic progressivism and the Central European school-reform movements, on the Swedish school and pre-school system, during the first half of the 20th century. These ideas as laid down in th

Human cysteine proteinase inhibitors. Isolation, physiological importance, inhibitory mechanism, gene structure and relation to hereditary cerebral hemorrhage

The isolation and characterization of six human cysteine proteinase inhibitors is reported. Their distribution in human biological fluids is also described and discussed with respect to physiological function. Studies on kininogen and cystatin C with respect to structure-function relationships and, as a result of the cystatin C studies, a general model for the mechanism of cysteine proteinase inhi

Light-induced multistep oxidation of dinuclear manganese complexes for artificial photosynthesis

Two dinuclear manganese complexes, [Mn2BPMP(@m-OAc)2].ClO4 (1, where BPMP is the anion of 2,6-bis{[N,N-di(2-pyridinemethyl)amino]methyl}-4-methylphenol) and [Mn2L(@m-OAc)2].ClO4 (2, where L is the trianion of 2,6-bis{[N-(2-hydroxy-3,5-di-tert-butylbenzyl)-N-(2-pyridinemethyl)amino]met hyl}-4-methylphenol), undergo several oxidations by laser flash photolysis, using rutheniumII-tris-bipyridine (tri

Design and evaluation of load control in web-server systems

Nonlinear discrete-time modeling of a Web server system is investigated. Server systems typically contain nonlinearities such as saturations and bounded queue lengths. The incoming traffic and service rates are best modeled by stochastic processes, well described and analyzed by queuing theory. Here, we develop and validate a control theoretic model of a general single server queue, a so-called G/

Comparative evaluation of the methods for determining thermal insulation of clothing ensemble on a manikin and person

Experimental studies helped to compare methods for determining and calculating total heat resistance of clothing sets accepted by Russian and international standards. Findings are that difference in the total heat resistance values calculated on humans and on dummies in relatively still air and quiet conditions is caused by measurement technique applied. Significant difference in the total heat re

Den riskfyllda gemenskapen : att hantera säkerhet på ett passagerarfartyg

The purpose of this study was to examine how cultural processes and organisa-tional conditions influence safety management in complex sociotechnical contexts. The object of investigation was a passenger ship where interviews and observations had been conducted for one year. The ambition was to understand definitions of risk and safety that arise on board the ship. The study focuses on situations t

Broad-band photometric colors and effective temperature calibrations for late-type giants - I. Z=0.02

We present new synthetic broad-band photometric colors for late-type giants based on synthetic spectra calculated with the PHOENIX model atmosphere code. The grid covers effective temperatures T-eff = 3000... 5000 K, gravities log g = - 0.5... + 3.5, and metallicities [M/H] = + 0.5... - 4.0. We show that individual broad-band photometric colors are strongly affected by model parameters such as mol

Embodiment of consciousness

The present article is based on the premise that mind is an emergent property of the processes that produce consciousness. Any scientific understanding must necessarily consider the need of an explanation of consciousness. Instead, the non-sense property of traditional scientific modelling appears to hide the phenomenon. In contrast, the explored hypothesis is based on the assumption that the mean

Determination of accurate stellar radial-velocity measures

Wavelength measurements in stellar spectra cannot readily be interpretedas true stellar motion on the sub-km s-1 accuracy level dueto the presence of many other effects, such as gravitational redshiftand stellar convection, which also produce line shifts. Following arecommendation by the IAU, the result of an accurate spectroscopicradial-velocity observation should therefore be given as the``baryc

Transmission electron microscopy in formation and growth of ordered mesoporous materials

In the boundary of materials and colloidal science, TEM became a very powerful technique used to image the interfaces and early stages of mesoporous materials formation, to obtain symmetry information about the porous network at the meso-scale, furthermore to obtain images of final structures and transformations that could not be observed otherwise. The aim of the present contribution is to give i

Effect of solids retention time and wastewater characteristics on biological phosphorus removal

The paper deals with the effect of wastewater, plant design and operation in relation to biological nitrogen and phosphorus removal and the possibilities to model the processes. Two Bio-P pilot plants were operated for 2.5 years in parallel receiving identical wastewater. The plants had SRT of 4 and 21 days, the latter had nitrification and denitrification. The plant with 4 days SRT had much more

Silvanus Thompson Memorial Lecture Molecular imaging using hyperpolarized C-13

MRI provides unsurpassed soft tissue contrast, but the inherent low sensitivity of this modality has limited the clinical use to imaging of water protons. With hyperpolarization techniques, the signal from a given number of nuclear spins can be raised more than 100 000 times. The strong signal enhancement enables imaging of nuclei other than protons, e.g. C-13 and N-15, and their molecular distrib