In this paper, a Web-based learning environment developed within the project called Virtual Learning Spaces (EVA, in Spanish) is presented. The environment is composed of knowledge, collaboration, consulting and experimentation spaces as a collection of agents and conventional software components working over the knowledge domains. All user interfaces are Web pages, generated dynamically by ser...

Photocrosslinking of polymers for industrial applications show undoubted advantages related to the mild conditions needed and economical equipment. However, some issues include: use (i) mercury lamps as light sources, which poses concerns about safety energy consumption, (ii) typical additives, such halogen-free flame-retardant fillers (HFFR) are powdered materials, can scatter UV photons avoid...

OBJECTIVES/HYPOTHESIS Enlarged vestibular aqueduct (EVA) and hearing loss are known to be caused by SLC26A4 mutations, but large phenotypic variability exists among patients with biallelic SLC26A4 mutations. Intrafamilial phenotypic variability was analyzed in multiplex EVA families carrying biallelic SLC26A4 mutations to identify the contribution of SLC26A4 mutations and other genetic or envir...

BACKGROUND As an alternative to electric vacuum aspirations (EVA), there is an increasing interest in using manual vacuum aspiration (MVA). OBJECTIVE To compare the safety, efficacy and acceptability of MVA with those of EVA for first-trimester abortion. SEARCH STRATEGY We searched MEDLINE, EMBASE, Cochrane Library and Chinese Biomedical Database in all language, together with reference lis...

A semi-conductive shielding layer plays an important role in the uniform electric field for a high-voltage cable. The electric-thermal properties of and insulation directly affect overall performance physicochemical performances composites are firstly analysed herein. Furthermore, discussed. experimental results show that thermal conductivity commercial is about twice layer, owing to effect car...

A dithiocarbamate chain transfer agent (CTA) based on Z-group substituted with a diphenyl amine (–NPh2) moiety is selected for the synthesis of statistical and diblock copolymers ethylene vinyl acetate via reversible addition–fragmentation polymerization. Benefiting from good growth control polyethylene (PE), poly(vinyl acetate) (PVAc), poly(ethylene-co-vinyl (EVA) achieved this CTA, linear typ...

Equine viral arteritis (EVA) is a contagious viral disease of equids caused by equine arteritis virus (EAV), an RNA virus that is classified in the family Arteriviridae. The virus is found in horse populations in many countries worldwide. EVA cannot be differentiated clinically from a number of other respiratory and systemic equine diseases. While laboratory-confirmed outbreaks of EVA have been...