Results 91 to 100 of about 3,872 (226)
X-ray fluorescence mapping of mercury on suspended mineral particles and diatoms in a contaminated freshwater system [PDF]
, 2014 Mercury (Hg) bioavailability and geochemical cycling is affected by its partitioning between the aqueous and particulate phases. We applied a synchrotron-based X-ray fluorescence (XRF) microprobe to visualize and quantify directly the spatial ...
Brooks, SC +7 more
core +2 more sources
Gaoya dianqi, 2015 混合型气体绝缘组合电器（hybrid-gas insulated switchgear,HGIS）在运行过程中,发生三相电流不平衡。为分析问题产生的原因,对HGIS进行了一系列试验,并返厂进行解体检查。结果表明:SF6气体分解物中SO2体积分数严重超标,C相回路接触电阻严重增大,C相分合闸时间测试无信号,三工位线隔离开关触头严重烧损。分析表明触头烧蚀是由设计缺陷、安装工艺不良等多个因素引起。对同类型的设备进行排查,发现多起类似问题。针对该类问题,建议厂家在设计应予以改进,并严格管制安装工艺 ...
魏庆, 苏煜, 杨智军
doaj
HGIS reconstruction of the urbanisation process
, 2016 El presente trabajo tiene como objetivo reconstruir e interpretar el tejido urbano de las principales ciudades de España con el fin comprender sus procesos de urbanización durante los siglos XIX y XX. Usando la tecnología innovaciones que tuvieron lugar durante este período, estas ciudades escaparon de los confines de sus muros y se extendió hacia ...
Alvarez Palau, Eduard Josep +3 more
openaire +1 more source
Une méthode des caractéristiques d'ordre deux sur maillages mobiles pour la résolution des équations de Navier-Stokes incompressible par éléments finis [PDF]
, 2002 Dans ce rapport, nous proposons une étude de la discrétisation des équations de Navier-Stokes pour un fluide visqueux incompressible par une méthode de Lagrange-Galerkin (ou méthode des caractéristiques) d'ordre 2 en maillage mobile.
Fourestey, Gilles
core +2 more sources
Geodetski list, 2004 Određivanje vertikalnoga gradijenta ubrzanja sile teže prolazilo je kroz nekoliko razvojnih razdoblja: od Brunsove formule vertikalnoga gradijenta preko Eötvösova tenzora do Marussijeva tenzora. Poznavanje vertikalnoga gradijenta prijeko je potrebno za redukciju očitanja relativnoga gravimetra, koje se odnosi na referentnu visinu gravimetra, na visinu ...
openaire +2 more sources
HeritageThe aim of this work is to identify a suitable methodology capable of integrating multiscale spatial information about an historic center drawn from a Geographic Information System (GIS) and Historical Building Information Modeling (HBIM).
Massimiliano Pepe +3 more
doaj +1 more source
Heritage ScienceThe layering process of the historic urban landscape (HUL) has spatial and temporal characteristics. With the help of digital technology, building a database to collect and manage spatial information on HUL is an effective research method. Taking Nanjing
Xuefeng Bai +3 more
doaj +1 more source
On-Line Estimation of Coal's HGI by Neural Networks.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 1999 In a pulverized coal fired boiler, various kinds of coals are used as a fuel. It is important to estimate properties of fired coal at the on-line, in order to realize good operated performance just like oil or gas fired boiler. Hardgrove grindability index is one of the important properties.
Isao MORIYAMA +4 more
openaire +1 more source
Gaoya dianqi, 2021 为了确定某252 kV HGIS母联三工位隔离开关动触头卡滞故障的原因,避免类似事件再次发生,文中通过现场检测、返厂解体与试验和理论计算等手段,对造成该事故的原因进行了详细分析。分析表明:动触头及静触座尺寸超差使动触头导体卡滞,无法操作,最终导致齿轮轴与齿轮咬合的平键处承受的力矩大于许用剪切力,最后被切断。
李爽 +4 more
doaj
Association between hemoglobin glycation index and non-alcoholic fatty liver disease. [PDF]
Front Endocrinol (Lausanne), 2023 Xing Y, Zhen Y, Yang L, Huo L, Ma H.
europepmc +1 more source