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Role of Chromium and Vanadium in the Atmospheric Oxidation of Sulfur(IV)

Oxidation of HSO3- in aqueous solution has been studied in the presence of vanadium(V), chromium(III) and chromium(VI). Based on spectrophotometric kinetics data and product analysis it is concluded that the autoxidation rate of sulfur(IV) in slightly acidic solution is unaffected by the presence of vanadium(V) and chromium(III). Chromate(VI), on the other hand, oxidizes sulfur(IV) in a direct red

Nyanlända studenters behov av utbildning : Möjligheter och hinder

Refugees arrive in Sweden in connection with wars and repressive conditions in their countries of origin or refuge. Recently, many have come from the Middle East, and Syria in particular. The situation of refugees has a wide range of consequences for education in the host country, including higher education. Validation and admissions procedures involve administrative challenges, and language is an

Equilibria, Kinetics and Mechanism for Complex Formation Between Hydrogen Sulfate/Sulfate and Palladium(II). Hydrolysis of Tetraaquapalladium(II)

Spectrophotometric equilibrium measurements indicate formation of the complexes [Pd(H2O)(3)HSO4](+) and [Pd(H2O)(3)SO4] in the reaction between [Pd(H2O)(4)](2+) and hydrogen sulfate/sulfate in the region: 0.10 less than or equal to [H+] less than or equal to 0.80 M. The stability constants are 0.7 +/- 0.2 and 19 +/- 6 M-1, respectively, at 25 degrees C and 1.00 M ionic strength. The protolysis con

trans-Influence of Triphenyl Stibine. Crystal and Molecular Structures of cis-[PtCl2(SbPh3)2] and trans-[PtI2(SbPh3)2]

Crystals of cis-[PtCl2(SbPh3)(2)] (1) are monoclinic, space group P2(1)/a with a = 20.5708(12), b = 10.1942(4), c = 33.3984(15) Angstrom, beta = 94.394(4)degrees and Z = 8. Substitution of chloride for iodide yields trans-[PtI2(SbPh3)(2)] (2), the crystals of which are monoclinic, space group P2(1)/c with a = 18.108(4), b = 10.102(2), c = 19.1 15(5) Angstrom, beta = 95.241(16)degrees and Z = 4. Th

Membrane Anchoring and Ion-Entry Dynamics in P-type ATPase Copper Transport

Cu+-specific P-type ATPase membrane protein transporters regulate cellular copper levels. The lack of crystal structures in Cu+-binding states has limited our understanding of how ion entry and binding are achieved. Here, we characterize the molecular basis of Cu+ entry using molecular-dynamics simulations, structural modeling, and in vitro and in vivo functional assays. Protein structural rearran

Occupational sedentariness and breast cancer risk

Background: Epidemiological studies have indicated that physical activity reduces the risk of developing breast cancer. More recently, sedentary behavior has been suggested as a risk factor independent of physical activity level. The purpose of the present study was to investigate occupational sedentariness and breast cancer risk in pre- and postmenopausal women. Materials and methods: In a popula

Social and economic consequences of alcohol use disorder : a longitudinal cohort and co-relative analysis

Background: Although alcohol use disorder (AUD) is associated with future risk for psychosocial dysfunction, the degree to which this arises from a direct causal effect of AUD on functioning v. from correlated risk factors (also known as confounders) is less clearly established. Method: AUD was assessed from Swedish medical, criminal and pharmacy registries. In a large general population cohort, u

The relation of dissociation and mind wandering to unresolved/disorganized attachment : an experience sampling study

Individuals with unresolved/disorganized representations of childhood trauma (U/d attachment) report more psychological distress than others, but little is known about their everyday mentation. In the present study adults with childhood trauma (N = 45) completed the Berkeley-Leiden Adult Attachment Questionnaire-Unresolved (BLAAQ-U) and the Adult Attachment Interview (AAI), and reported everyday m

Blood-borne phagocytes internalize urate microaggregates and prevent intravascular NETosis by urate crystals

Hyperuricemia is strongly linked to cardiovascular complications including atherosclerosis and thrombosis. In individuals with hyperuricemia, needle-shaped monosodium urate crystals (nsMSU) frequently form within joints or urine, giving rise to gouty arthritis or renal calculi, respectively. These nsMSU are potent instigators of neutrophil extracellular trap (NET) formation. Little is known on the

Effect of Type 1 Diabetes on School Performance in a Dynamic World : New Analysis Exploring Swedish Register Data

This paper investigates if the effect of type 1 diabetes mellitus (T1DM) on school performance has changed over time using national Swedish population register data. The issue is of interest because management and treatment of the disease have improved over the last decades and, furthermore, because of changes in the educational grading system. Despite these changes, data indicate a persistent neg

Compressive loading of the murine tibia reveals site-specific micro-scale differences in adaptation and maturation rates of bone

Summary: Loading increases bone mass and strength in a site-specific manner; however, possible effects of loading on bone matrix composition have not been evaluated. Site-specific structural and material properties of mouse bone were analyzed on the macro- and micro/molecular scale in the presence and absence of axial loading. The response of bone to load is heterogeneous, adapting at molecular, m

Laparoscopic hepatectomy for HCC in elderly patients : risks and feasibility

Background: Laparoscopic liver resection (LLR) appears to be safe and effective as open liver resection (OLR) for hepatocellular carcinoma (HCC). However, studies comparing LLR with ORL in elderly patients are limited. The purpose of this study is to compare the clinical outcomes of LLR versus OLR for HCC in elderly patients. Methods: A retrospective analysis was made comparing laparoscopic (n = 1

The 2015 National Cancer Program in Sweden : Introducing standardized care pathways in a decentralized system

Starting in 2015, the Swedish government has initiated a national reform to standardize cancer patient pathways and thereby eventually speed up treatment of cancer. Cancer care in Sweden is characterized by high survival rates and a generally high quality albeit long waiting times. The objective with the new national program to standardize cancer care pathways is to reduce these waiting times, inc