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Structural characterization of micellar aggregates in sodium dodecyl sulfate/aluminum nitrate/urea/water system in the synthesis of mesoporous alumina

The mechanism of templated synthesis of ordered mesoporous alumina according to the recipe proposed by Yada et al. (Yada, M.; Machida, M.; Kijima, T. Chem. Commun. 1996, 769) using sodium dodecyl sulfate (SDS) as template, has been investigated by NMR self-diffusion and spin and fluorescence probe techniques. In the precursor solutions urea was found to produce a substantial shortening of the long

Polygalacturonic acid/endo-polygalacturonase system: A kinetic study in batch reactors

The enzymatic depolymerization of the pectic substance polygalacturonic acid (PGA) is studied in batch reactor. The number-average molecular weight of native substrate is estimated, using a simple and quick technique, to be approximately 11.1 kDa, the polymeric chains consisting on average of 63 galacturonic acid units. The effect of enzyme concentration was studied varying biocatalyst loading fro

Review of Kaspar von Greyerz, Religion und Kultur. Europa 1500-1800. Göttingen 2000

Greyerz varnar för dogmatism (att kalla förfädernas religionsutövning irrationell eller vidskeplig) och reduktionism (Marx, Durkheim). Kulturella förlopp är förbundna med sociala, men kan inte reduceras till sådana. Boken behandlar äktenskap och familj, folkreligiositet som kollektiv ritual och förhållandet till de utstötta (judar, häxor), samt även vederdöpare, baptister, kväkare och radikalpieti

Det verkar verka – om ett rätt nytt svenskt hjälpverb

The Swedish epistemic auxiliary "verka" 'seem to' has developed since the end of the 19th century from an active causative meaning 'have the effect', 'cause'. Its use with a main verb in the infinitive has increased in the latter half of the 20th century. The deveolpment is studied as a case of grammaticalization.

Det moraliska ifrågasättandet : alkoholmissbrukares upplevelser av och reaktioner på tvångsvård

Popular Abstract in Swedish Syftet med denna studie var att undersöka hur tvångsvård av alkoholmissbrukare upplevs av den som döms till det. Majoriteten av dessa personer är negativa till tvångsvård. I studien har också tagits hänsyn till att resultaten ses utifrån ett bredare perspektiv. Det som också undersökts är alkoholmissbruk generellt, varför klienterna dricker i den utsträckning de gör samThe aim of this study was to investigate how compulsary treatment of alcohol abuse is experienced by persons forced to submit to it, the majority of whom are negative in their attitude toward treatment of this sort. The importance of considering the resluts obtained not in isolation but within a larger context is emphasized. Among the elements of this context examined are alcohol abuse generally,

The role of aquaporins in cellular and whole plant water balance

Aquaporins are water channel proteins belonging to the major intrinsic protein (MIP) superfamily of membrane proteins. More than 150 MIPs have been identified in organisms ranging from bacteria to animals and plants. In plants, aquaporins are present in the plasma membrane and in the vacuolar membrane where they are abundant constituents. Functional studies of aquaporins have hitherto mainly been

Gastrectomized rats respond with exaggerated hypercalcemia to oral and intravenous calcium loads because of impaired ability of bone to take up Ca2+.

BACKGROUND: Gastrectomy (Gx) causes osteopenia. The hypothesis tested in the present study is that Gx affects Ca homeostasis and that an impaired ability to handle Ca contributes to the Gx-evoked osteopenia. METHODS: SHAM-operated and Gx rats were compared with respect to changes in blood Ca2+ after oral or intravenous loads of CaCl2 1-2 weeks or 2-4 months after the operations. RESULTS: Different

Membrane extraction techniques in environmental analysis

Membrane assisted extraction facilitates the integration of classical liquid-liquid extraction (LLE) chemistry to automated instrumental analysis. Various shortcomings of classical LLE are overcome by the membrane separation of sample (donor) and extract (acceptor): 1) reduced solvent usage, 2) higher enrichment factors, 3) no solvent evaporation and 4) no formation of emulsions. Membrane extracti

Theory of a strained p-Ge resonant-state terahertz laser

A theory of a strained p-Ge resonant-state THz laser is developed. A comprehensive study of the processes leading to the stimulated THz emission in strained p-Ge under an electric field applied is presented. The distribution functions of light and heavy holes are found. The scattering by optical and acoustic phonons, as well as resonant scattering by charged impurities are taken into account. The

Screening for Down syndrome based on maternal age or fetal nuchal translucency: a randomized controlled trial in 39572 pregnancies

Objectives Nuchal translucency (NT) screening increases antenatal detection of Down syndrome (DS) compared to maternal age-based screening. We wanted to determine if a change in policy for prenatal diagnosis would result in fewer babies born with DS. Methods A total of 39572 pregnant women were randomized to a scan at 12-14 gestational weeks including NT screening for DS (12-week group) or to a sc

The Significance of Spaciousness: an investigation of spaciousness in the context of the residential yard

Popular Abstract in Swedish Som en följd av de senaste årens förtätningstrend har stadens täthet blivit en aktuell stadsbyggnadsfråga. Förtätning är ett komplext fenomen som berör en rad centrala egenskaper hos staden. Förtätning är också en kontroversiell stadsbyggnadsstrategi. Det är motsättningen mellan förtätning och friytor som den här avhandlingen tar sin utgångspunkt i. Krymper mellanrummenThe new interest in density displayed by professional town planners and town-planning researchers is related to the present densification of the urban environment in many towns and cities. Research on densification is primarily concerned with the link between urban form and sustainable development. The point of departure of this thesis is to consider what a denser housing environment will mean to

Arkitekturens territorialitet : till en diskussion om territoriell makt och gestaltning i stadens offentliga rum

Popular Abstract in Swedish Vi har de senaste decennierna sett stora förändringar vad gäller kontroll och tillgänglighet i det offentliga rummet. Både forskning och planering är i starkt behov av begrepp och teori för att klargöra den byggda miljöns roll i detta sammanhang. I avhandlingen utvecklas redskap för att beskriva och belysa arkitekturens roll i upprättandet av olika slags territorier inoThe point of departure of this dissertation is a consideration of the problems in the field of architecture, of conceptualizing and addressing aspects of the complex relationship between architectural form and use. The aim of the thesis is to create conditions for a discussion on architectural design and territorial power relations within the context of everyday life, and more specifically to inve

Limits of Tax Policy

Popular Abstract in Swedish Den offentliga sektorn har vuxit drastiskt under det senaste århundradet och utgör idag en stor del av ekonomin i många västländer. Givet storleken på den offentliga sektorn och dess potentiella inflytande över såväl enskilda individer som samhälle är studier som dokumenterar effekterna av den offentliga sektorn värdefulla. Denna avhandling "Den Offentliga Sektorns BegrThe size of government has increased dramatically over the last century. Given the magnitude of government involvement in the economy and the potential influence it has on individuals as well as the economy, studies documenting the effects of government size may offer particularly timely insights. This thesis addresses some of these issues. Chapter two and three deal with welfare reform. Welfare