Sökresultat

Particles that are a hundred- to ten thousand times smaller than the width of a hair are commonly referred to as colloidal particles. Colloidal particles occur in a variety of products, like foodstuffs (marmelade and dairy products), construction materials (cement) and stained glass. In water, these particles are strongly affected by the Brownian force: an force that was discovered in 1827 by the Thermoresponsive colloidal microgels expel solvent from their interior upon crossing a threshold temperature, resulting in a significantly reduced size. The collapse of microgels can reversibly switch the interparticle interactions from soft repulsive to attractive, and the accompanying size reduction allows for precise control over volume fraction. Mixing two microgels that collapse at different

Background: Astrocytes produce and store the energy reserve glycogen. However, abnormal large glycogen units accumulate if the production or degradation of glycogen is disturbed, a finding often seen in patients with Alzheimer's disease (AD). We have shown increased activity of glycogen degrading α-amylase in AD patients and α-amylase positive glial cells adjacent to AD characteristic amyloid-β (A

Hand eczema is common in healthcare workers. Besides wet work, healthcare work also implies exposure to contact allergens. Occupational hand exposures have changed in recent years owing to implementation of hand hygiene procedures including an increased use of medical gloves. An increase of hand eczema caused by contact allergy to surgical gloves, in most cases owing to contact allergy to the rubb

Anthropogenic land cover change (ALCC) is the most important transformation of the Earth system that occurred in the preindustrial Holocene, with implications for carbon, water and sediment cycles, biodiversity and the provision of ecosystem services and regional and global climate. For example, anthropogenic deforestation in preindustrial Eurasia may have led to feedb

Context. The ESA Gaia mission provides a unique time-domain survey for more than 1.6 billion sources with G ≲ 21 mag. Aims. We showcase stellar variability in the Galactic colour-absolute magnitude diagram (CaMD). We focus on pulsating, eruptive, and cataclysmic variables, as well as on stars that exhibit variability that is due to rotation and eclipses. Methods. We describe the locations of var

Arbetet omfattar uppföljningav ställda kriterier förlåg klimatpåverkan från betong vid upphandling av betongstommeför brf. Viva i Göteborg. Kriterierna följdes upp dels genom att LCA studien som genomförtsunder programskedet uppdaterades med data för den färdigupphandlade byggnadenoch dels genom att interljuva ett urval av aktörer för att få en inblick över hur branschen ser på de ställThis work includes monitoring of set criteria for low climate impact from concrete in procurement of concrete structures for brf. Viva in Gothenburg. The criteria were followed up by updating the LCA study performed during the program phase with new data for the completed building, plus a selection of the project stakeholders were also interviewed to gain an insight into how the ind

Elasmobranchs are reported for the first time from Lower Triassic deposits in Oman. The well-preserved remains consist of isolated teeth, dermal denticles and fin spines, recovered from conodont residues. The low-palaeolatitude sections consist of Lopingian-Olenekian shallow and pelagic carbonates in exotics, olistoliths and breccia blocks that have been redeposited in younger allochthonous strata

Ultrashort, coherent light pulses in the extreme ultraviolet (XUV) wavelength region are excellent tools for a wide range of experiments. These XUV pulses are in particular used to characterize electron dynamics. Additionally, the high photon energy enables quantum control of short-lived transitions in atoms. These transitions are of interest for ultrafast quantum control as the bandwidth of the c

Cette étude propose une analyse de la proportion d’élèves suédois qui étudientle français au collège et présente une réflexion plus générale sur la situationde l’enseignement du français en Suède. À partir de données statistiques de labase de données SIRIS, mise à disposition publique par la Direction nationale desÉtablissements scolaires, les résultats montrent que, même si la proportion d’élèves

The objective of this study was to probe the molecular mechanisms underlying the increase in sensitivity of cells to bradykinin (BK) following expression of a transforming Ha-ras oncogene. We used native NIH3T3 fibroblast (3T3) cells and 3T3 cells transfected with a glucocorticoid-sensitive oncogenic Ha-ras construct (DT cells). DT cells incubated in the presence of 1 μM dexamethasone (DEX) for 24

We have previously shown that exposure of DDT1 MF-2 smooth muscle cells to the agonist bradykinin (BK) resuits in a rapid B2 kinin receptor-mediated internalization of BK followed by degradation of the intracellular BK [Munoz, C. M., and Leeb-Lundberg, L. M. F. (1992) J. Biol. Chem. 267, 303-309]. Here, we show that BK internalization is paralleled by sequestration of the occupied B2 receptors. Se

A model is described in which transient complete cerebral ischemia is induced in rats by intracardiac injection of potassium chloride. The animals were intubated and mechanically ventilated with a nitrous oxide/oxygen (70:30) mixture. Cardiac arrest was achieved following a brief period of ventricular fibrillation. After 5-6 min, the circulation was restored by cardiopulmonary resuscitation and pa

Most crash prediction models are statistically-based prediction methods which require significant efforts in crash data collection and may not be applied in particular traffic environments due to the limitation of data sources. Traffic conflict studies have been proposed to mitigate this issue using short time survey to count traffic conflicts which are assumed as a surrogate measure of safety. Un

PD-L1 expression assessed by immunohistochemical staining is used for the selection of immunotherapy in non-small cell lung cancer (NSCLC). Appropriate validation of PD-L1 expression in cytology specimens is important as cytology is often the only diagnostic material in NSCLC. In a previous study comprising two different cohorts of paired biopsies and cytological specimens, we found a fairly good

This review aims to provide a comprehensive overview of the in vitro, animal, and clinical studies with the bacterial strain Lactiplantibacillus plantarum 299v (L. plantarum 299v; formerly named Lactobacillus plantarum 299v) published up until June 30, 2020. L. plantarum 299v is the most documented L. plantarum strain in the world, described in over 170 scientific publications out of which more th

BACKGROUND: The HIV epidemic in Ethiopia is concentrated in urban areas. Ethiopia conducted a Population-based HIV Impact Assessment (EPHIA) in urban areas between October 2017 and April 2018 to measure the status of the country's response to the epidemic.METHODS: We conducted field data collection and HIV testing in randomly selected households using the national, rapid testing algorithm with lab

Background: Burns are a global public health concern, with the majority of the disease burden affecting low- and middle-income countries. Yet, as suggested by previous publications, there is a widespread belief that literature about burns in low- and middle-income countries is lacking. Therefore, we aimed to assess with a scoping review, the extent of the literature output on burns in East Africa,