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The reactions between chalcocite, synthetic copper(I) sulfide, acanthite and synthetic silver(I) sulfide, and aqueous and acetone solutions of potassium ethylxanthate have been studied. Qualitative analysis of the ethylxanthate species present on the surfaces of the sulfide minerals and the synthetic metal sulfides has been made by means of diffuse reflectance infrared Fourier transform (DRIFT) sp
This thesis concerns two interrelated subjects of heat and mass transfer processes. The first one concerns mainly experimental measurements, with a subsequent development of a calculation procedure, of the thermal and hydraulic performances, experimental methods and evaluation procedures applied on various plate heat exchangers (PHEs) as evaporators with the refrigerant ammonia as working medium.
This study examines the determinants behind the restructuring of China's SOEs in the late 1990s. We have reached two major findings. First, we find that the degree of labor retrenchment is negatively related to enterprise performance, suggesting that poor performance is a major force driving labor restructuring. Second, we offer evidence that decisions on labor retrenchment in traditional SOEs are
NADH:quinone oxidoreductase, or Complex I, is a multi-subunit membrane-bound enzyme in the respiratory chain of many pro- and eukaryotes. The enzyme catalyzes the oxidation of NADH and donates electrons to the quinone pool, coupled to proton translocation across the membrane, but the mechanism of energy transduction is not understood. In bacteria the enzyme consists of 14 subunits, seven membrane
Artikeln bygger på föredrag som hållits i Göteborg, Oslo, Malmö och Torpa. Den hävdar att såväl ”Bibelsyn och bibelbruk” som dess opponenter stannat vid bibelsynen utan att egentligen behandla bibelns bruk i kyrkan och hos den enskilde. I Giertz författarskap – med tonvikt på de historiska romanerna Stengrunden, Tron allena, och Riddarna på Rhodos – är däremot Bibelns bruk av central och avgörande
In 2 prospective studies, we previously reported on the early and accurate diagnosis of invasive candidiasis by determining the D-arabinitol/L-arabinitol (DA/LA) ratio in urine in neutropenic children with cancer at the paediatric oncology unit (POU) and in premature infants at the neonatal intensive care unit (NICU) at our hospital. In this retrospective study at the same units, we report how the
Narrowband MIMO channel measurements at 1947 MHz have been performed in an urban macrocellular outdoor-indoor scenario. The spatial characteristics of the channel have been analyzed, showing an angular spread of 5-10° at the base station and 30-60° at the mobile station. The maximum theoretical capacity that the channel can support has been evaluated for various antenna spacings and number of ante
The purpose of this essay is to provide with a theoretical survey on the conceptions of "Nationalism" and "Internationalism", on a general level as well as applied to the scientific field. This pair of conceptions is useful to help us explain to understand the purpose of scientific cooperation and scientific-political motives behind the scientific society, in this case Europe during the period 187
In this paper an experimental and analytical exploration on the effect of water-binder ratio (w/b), silica fume and age on autogenous, carbonation, drying and total shrinkage of High-Performance Concrete (HPC) is outlined. Eight types of HPC were studied. Carbonation, internal relative humidity (RH) and strength were studied on specimens from the same batch of HPC that was used in the studies of s
BACKGROUND: The disabilities of the arm, shoulder and hand (DASH) questionnaire is a self-administered region-specific outcome instrument developed as a measure of self-rated upper-extremity disability and symptoms. The DASH consists mainly of a 30-item disability/symptom scale, scored 0 (no disability) to 100. The main purpose of this study was to assess the longitudinal construct validity of the
We evaluated a Swedish version of a self-administered disease-specific outcome questionnaire for carpal tunnel syndrome regarding reliability, validity and responsiveness to clinical change. It consists of multi-item scales assessing symptom severity, function, patient satisfaction and quality of life. It was given to 102 patients before and 3 months after carpal tunnel release. Test-retest reliab
The metabolites of arachidonic acid are well connected to pathological situations such as inflammation, cancer and asthmA. Sheng et al. [7] found that COX-2 is upregulated in colon cancer tissue and tumor cell lines indicating that COX-2 is involved in colon cancer. This is supported by studies showing that patients treated with nonsteroidal anti-inflammatory drugs, inhibitors of COX-2, exhibit a
A method for high throughput screening of Green Fluorescent Proteins carrying metal binding tags in bacteria was developed. A random four amino acids tag-peptide library was successfully generated in E. coli. A 96-microtiter plate assembled with metal-iminodiacetic acid small cryogel columns was used for library screening. For the first time we were able to simultaneously screen a metal binding pe
