Search results for "Mw"
showing 10 items of 302 documents
Initial approaches in benchmarking and round robin testing for proton exchange membrane water electrolyzers
2019
Abstract As ever-increasing amounts of renewable electricity enter the energy supply mix on a regional, national and international basis, greater emphasis is being placed on energy conversion and storage technologies to deal with the oscillations, excess and lack of electricity. Hydrogen generation via proton exchange membrane water electrolysis (PEMWE) is one technology that offers a pathway to store large amounts of electricity in the form of hydrogen. The challenges to widespread adoption of PEM water electrolyzers lie in their high capital and operating costs which both need to be reduced through R&D. An evaluation of reported PEMWE performance data in the literature reveals that there …
Characterization of ultra-high-molecular-weight polyethylene (UHMWPE) modified by ion implantation
2004
Abstract Surface modification of ultra high molecular weight polyethylene (UHMWPE) is induced by ion implantation of different ions at 300 keV energy. The aim of this work was the chemical, physical and mechanical characterization of the modified material in order to know deep inside about the effect of the ion beam upon the polymer. The irradiated surfaces are investigated by Raman spectroscopy, infrared absorption and micro-hardness analysis, scanning electron microscopy. Pin on disc measurements valuated the wear of the UHMWPE against a stainless steel probe; wear resistance increases of about 76% after the ion implantation. This result can be attributed to the ion bombardment inducing a…
Studies on electron-beam irradiation and plastic deformation of medical-grade ultra-high molecular weight polyethylene
2011
Abstract Separated and combined electron-beam irradiation and plastic deformation effects on the structures of ultra-high molecular weight polyethylene (UHMWPE) were studied. It was found that the concentration of carbonyl (ketones, esters and peresters), hydroxyl and vinyl groups increases with the growing dose of adsorbed electrons. It also tends to exhibit a slight increase in the melting point and crystallinity of the samples. A mechanical stress in the polymer was found to accelerate radiation-induced degradation. It was concluded that each of the factors studied (i.e. electron beam sterilization and plastic deformation) had a different impact on the polymer structure. The change in th…
Interactional means of teaming up: enacting the features of contemporary working life in a theater performance
2021
Abstract The article examines how the aspects of the social world are enacted in a theater play. The data come from a videotaped performance of a professional theater, portraying a story about a workplace organization going through a personnel training program. The aim of the study is to show how the core theme of the play – the teaming up of the personnel – is constructed in the live performance through a range of interactional means. By focusing on four core episodes of the play, the study on the one hand points out to the multiple changes taking place both within and between the different episodes of the play. On the other hand, the episodes of collective action involving the semiotic re…
A High speed data link optimization for digitalized transfer to processing FPGA
2021
State-of-the-art arrays of detectors, that require digital processing, may have a sizeable number of digitalized signal links. This is the case in several experimental nuclear physics instruments. Moreover, the data rate of the sampled signals, defined primary by the signal bandwidth of the individual detectors, may not exhaust the capabilities of a single FPGA transceiver input. The preprocessing is usually carried out in a modern FPGA with transceiver data rate capabilities over 10Gbps. Moreover, cost effective FPGA have a limited number of transceivers for given FPGA processing capabilities. The investigation of a cost-effective and efficient solution to the mismatch between both data ra…
Constructed wetlands as nature-based solution for sustainable wastewater management in urban areas: a critical assessment by experimental studies and…
2022
In urban areas, constructed wetland systems (CWS) have been recognized as one of the most valid technologies for sustainable wastewater management. They represent green infrastructure and provide solutions to treatment of wastewaters that cities and peri-urban areas produce in large amount. In particular, CWS offer the advantages of wastewater reuse for parklands irrigation, water storage and peak-flow attenuation, control of stormwater runoff, nutrient cycling and uptake, heavy metals sequestration, removal of organic compounds. In greener cities, these systems have the potential to perform not just hydrological and wastewater treatment functions, but also urban design and ecological aspec…
Professionals' experiences with Open Dialogues with young people's social networks - identity, role and teamwork : a qualitative study
2015
Global social knowledge management: from barriers to the selection of social tools
2013
Web 2.0 and Social Software revolutionize the knowledge exchange within and between organizations. This is one of the claims consultants and software vendors in the field have made. But have the promises been kept and has evidence been achieved so far, in particular for knowledge management in globally distributed settings? As a starting point, our paper introduces the field of Global Social Knowledge Management (GSKM). We see this area as one of the main research area for future research in the Knowledge Management domain. A variety of social software applications have already been seen promising and incorporated into the context of knowledge management (Avram 2006; Zheng and Zheng 2010; L…
Company Event Manager
2019
Sekojošais dokuments ir noslēguma darbs programminženierijas kursā. Darba autori:Maksims Pavļenko. Dokuments ir programmatūras prasību specifikācija produktam „Company Event Manager”, kura mērķis ir lielo uzņēmumu darbinieku profesionālo prasmju uzlabošana, sniedzot informāciju par attīstības iespējām, kā arī palīdzētu orientēties ziņu plūsmā, laika plānošanai pašrealizācijai un uzlabot komandas darbu uzņēmumā.
Bounded Rationality for “Just In Time” Education
2011
Abstract If you cannot get answers keep putting questions The paper has three targets: a) Taken per se , it advances the research presented in a series of seven papers about education in a post-industrial (i.e., service-oriented) society broadening the scope from engineering to any kind of education reachable through reachable through permanent endeavour. b) Regarded as part of a “EU 2020 research cluster” with the aim to pro pose affordable approaches to education for sustainable development, the paper reveals bounded rationality (BR) as common denominator of, mechanism for, and connection between the two facets of permanent education: e- teaching and e- learning , the research aiming to m…