检索结果-南通市图书馆

Sustainable Application of a Novel Water Cycle Using Seawater for Toilet Flushing

Engineering 2016年第4期2卷 460-469页

作者： Xiaom.ng Liu Ji Dai Di Wu Feng Jiang Guanghao Chen Ho-Kwong Chui m.rk C. m. van Loosdrecht Departm.nt of Civil and Environm.ntal Engineering The Hong Kong University of Science and Technology Hong Kong China Water Technology Center The Hong Kong University of Science and Technology Hong Kong China Chinese National Engineering Research Center for Control and Treatm.nt of Heavy m.tal Pollution (Hong Kong Branch) The Hong Kong University of Science and Technology l-long Kong China School of Chem.stry and Environm.nt South China Normal University Guangzhou 510006 China Departm.nt of Biotechnology Delft University of Technology Delft2629 HZ the Netherlands

Global water security is a severe issue that threatens hum.n health and well-being. Finding sustainable alternative water resources has becom. a m.tter of great urgency. For coastal urban areas, desalinated seawater could serve as a freshwater supply. However, since 20%-30% of the water supply is used for flushing waste from.the city, seawater with sim.le treatm.nt could also partly replace the use of freshwater. In this work, the freshwater saving potential and environm.ntal im.acts of the urban water system.（water-wastewater closed loop） adopting seawater desalination, seawater for toilet flushing （SWTF）, or reclaim.d water for toilet flushing （RWTF） are com.ared with those of a conventional freshwater system. through a life-cycle assessm.nt and sensitivity analysis. The potential applications of these processes are also assessed. The results support the environm.ntal sustainability of the SWTF approach, but its potential application depends on the coastal distance and effective population density of a city. Developed coastal cities with an effective population density exceeding 3000 ***-2 and located less than 30 km.from.the seashore （for the m.in pipe supplying seawater to the city） would benefit from.applying SWTF, regardless of other im.act param.ters. By further applying the sulfate reduction, autotrophic denitrification, and nitrification integrated （SANI） process for wastewater treatm.nt, the m.xim.m.distance from.the seashore can be extended to 60 km. Considering that m.st m.dern urbanized cities fulfill these criteria, the next generation of water supply system. could consist of a freshwater supply coupled with a seawater supply for sustainable urban developm.nt.

关键词： Alternative water resources Seawater toilet flushing SANIUrban water system Life-cycle assessm.nt

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

How to m.ke the end of a gene,the sim.le way

引用

BIOCELL 2022年第6期46卷 1453-1457页

作者： KAREL H.m.van WELY Centro Nacional de Biotecnología/CSIC Madrid28049Spain

Transcription term.nation of nearly all protein-coding genes in m.m.als requires 3’end processing by a m.ltiprotein com.lex that will cleave and polyadenylate the m.ssenger RNA *** a variety of enzym. com.lexes intervene,3’end processing was thought to be fundam.ntally com.lex and subject to a m.ltitude of regulatory *** possibility to select just one out of several polyadenylation sites,in particular,has caused m.ch questioning and *** appear to be separate m.chanism. however can be com.ined into a defined set of rules,allowing for a relatively sim.le interpretation of 3’end ***,readiness of the term.nal exon splice site determ.nes when a transcript reaches the m.turity to select a nearby polyadenylation *** pausing then acts in concert,extending the tim.fram. during which the transcription com.lex is close to polyadenylation *** RNA polym.rase pausing is governed by the sam. type of sequences in bacteria and m.tazoans,m.m.alian transcription term.nation resem.les its prokaryote counterpart m.re than generally thought.

关键词： RNA transcription RNA polym.rase II pausing Splicing Term.nation Polyadenylation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Surface charging activated m.chanism.change: A com.utational study of O, CO, and CO2 interactions on Ag electrodes

引用

Journal of Energy Chem.stry 2020年第11期29卷 307-313页

作者： Ilker Tezsevin m.uritius C.m.van de Sanden Suleym.n Er DIFFER-Dutch Institute for Fundam.ntal Energy Research De Zaale 20Eindhoven 5612 AJThe Netherlands CCER-Center for Com.utational Energy Research DIFFER-Dutch Institute for Fundamental Energy ResearchDe Zaale 20Eindhoven 5612 AJThe Netherlands Departm.nt of Applied Physics Eindhoven University of TechnologyEindhoven 5600 MBThe Netherlands

Electrocatalytic and plasm.-activated processes receive increasing attention in catalysis. Density functional theory(DFT) calculations are state-of-the-art tools for the fundam.ntal study of reaction m.chanism. and predicting the perform.nce of catalytic m.terials. Proper application of DFT-based m.thods is crucial when investigating charge-doped electrode surfaces during electrocatalytic and plasm.-activated reactions. Here, as a m.del electrode for plasm.-activated CO2 splitting, we studied the interactions of O, CO, and CO2 with the neutral and progressively charged Ag(111) m.tal surfaces. We show that the application of correction procedures is necessary to obtain accurate adsorption energy profiles of O atom.,CO and CO2 m.lecules on Ag surfaces that are under the influence of additional electrons. Interestingly,the oxidation of CO is found to shift from.a Langm.ir–Hinshelwood m.chanism.on a neutral electrode to an Eley–Rideal m.chanism.on charged electrodes. Furtherm.re, we show that the surface charging of Ag(111) electrodes increase their CO2 reduction perform.nce by enhancing the adsorption of O atom. and desorption of CO m.lecules. A further increase in the absolute charge-state of the electrode surface is expected to waive the therm.dynam.c barriers for the CO2 splitting reaction.

关键词： Density functional theory CO2 reduction Silver electrode Surface charge

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A case study of the stability of a non-typical bleeder entry system.at a *** m.ne

引用

International Journal of m.ning Science and Technology 2020年第1期30卷 25-31页

作者： T.m.Klem.tti m.A.van Dyke I.B.Tulu D.Tuncay NIOSH Pittsburgh m.ning Research Division Pittsburgh 15236USA Departm.nt of m.ning Engineering West Virginia UniversityMorgantown 26505USA

Longwall abutm.nt loads are influenced by several factors,including depth of cover,pillar sizes,panel dim.nsions,geological setting,m.ning height,proxim.ty to gob,intersection type,and size of the *** does proxim.ty to the gob affect pillar loading and entry condition?Does the gob influence depend on whether the abutm.nt load is a forward,side,or rear loading?Do non-typical bleeder entry system. follow the traditional front and side abutm.nt loading and extent concepts?If not,will an im.roved understanding of the com.ined abutm.nt extent warrant a change in pillar design or standing support in bleeder entries?This paper details observations m.de in the non-typical bleeder entries of a m.derate depth longwall panel—specifically,data collected from.borehole pressure cells and roof extensom.ters,observations of the conditions of the entries,and num.rical m.deling of the bleeder entries during longwall *** prim.ry focus was on the extent and m.gnitude of the abutm.nt loading experienced due to the extraction of the longwall *** to the layout of the longwall panels and bleeder entries,the borehole pressure cells(BPCs)and roof extensom.ters did not show m.ch change due to the advancing of the first ***,they did show a noticeable increase due to the second longwall advancem.nt,with a m.xim.m.of about 4 m.a of pressure increase and 5m.of roof *** observations of the conditions showed little to no change from.before the first longwall panel extraction began to when the second longwall panel had been advanced m.re than 915 *** pillar spalling was observed on the corners of the pillars closest to the longwall gob as well as an increase in water in the *** addition to the observations and instrum.ntation,num.rical m.deling was perform.d to validate m.deling procedures against the m.nitoring results and evaluate the bleeder *** Consulting Group’s FLAC3D num.rical m.deling software was used to evaluate the bl

关键词： Abutm.nt loading Longwall Instrum.ntation Bore hole pressure cells Pillar loading Yield pillar Bleeder pillar

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Using occupancy m.dels to determ.ne m.m.alian responses to landscape changes

引用

Integrative Zoology 2009年第2期4卷 232-239页

作者： Jerem. m.NICHOLSON Frank T.van m.NEN Departm.nt of Forestry Wildlifeand FisheriesUniversity of TennesseeKnoxvilleTennesseeUSA US Geological Survey Southern Appalachian Research BranchUniversity of TennesseeKnoxvilleTennesseeUSA

Determ.ning im.acts of anthropogenic landscape changes on wildlife populations is *** the challengesDeterm.ning im.acts of anthropogenic landscape changes on wildlife populations is *** the challenges of designing field studies to docum.nt conditions before and after landscape changes occur,assessm.nt of popula-of designing field studies to docum.nt conditions before and after landscape changes occur,assessm.nt of popula-tion responses(*** in population density)often provide poor inference because of sam.ling *** responses(*** in population density)often provide poor inference because of sam.ling *** of occupancy,however,only requires data on detection or non-detection of a species and m.ght provideEstim.tion of occupancy,however,only requires data on detection or non-detection of a species and m.ght provide better *** dem.nstrate the utility of occupancy m.dels,we used data from.an Am.rican black bear(Ursusbetter *** dem.nstrate the utility of occupancy m.dels,we used data from.an Am.rican black bear(Ursus am.ricanus Pallas)population in North Carolina,USA to test our research hypothesis that docum.nted declines inam.ricanus Pallas)population in North Carolina,USA to test our research hypothesis that docum.nted declines in site occupancy of black bears would be greater near a new four-lane *** used m.lti-season occupancysite occupancy of black bears would be greater near a new four-lane *** used m.lti-season occupancy m.dels to estim.te site occupancy based on bear visitation to survey sites before and after com.letion of the newm.dels to estim.te site occupancy based on bear visitation to survey sites before and after com.letion of the new highway and as a function of distance to the *** occupancy declined from.0.81 to 0.35 between the twohighway and as a function of distance to the *** occupancy declined from.0.81 to 0.35 between the two s

关键词： landscape changes m.m.alian responses occupancy m.dels transportation infrastructure Ursus am.ricanus.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

DESIGN FOR AVAILABILITY:A HOLISTIC APPROACH TO CREATE VALUE FOR m.NUFACTURERS AND CUSTOm.RS OF CAPITAL GOODS

引用

Journal of System. Science and System. Engineering 2012年第4期21卷 403-421页

作者： Lydie P.m.Sm.TS Geert-Jan van HOUTUm.Fred LANGERAK School of Industrial & System. Engineering Eindhoven University of Technologythe Netherlands

This research introduces a holistic fram.work called Design for Availablhty that uses m. principles of Lean Sigm. and Design for X to cost-effectively optim.ze the availability of capital goods （i.e., technical system. used in the production of end-products or -services such as m.dical system., airplanes, and m.nufacturing equipm.nt） throughout their entire lifetim.. m.nufacturers require such a fram.work because users of capital goods increasingly insist on high system.availability levels against reduced lifetim. costs. The Design for Availability fram.work allows m.nufacturers to determ.ne the current status of system.availability and associated lifetim. costs, and to identify opportunities to create additional value for them.elves and their custom.rs. A case study at a global m.nufacturer of capital goods in the food processing industry illustrates how the fram.work can be used in practice and to what extent the m.nufacturer and custom.rs m.y profit from.applying Design for Availability.

关键词： Design for X system.availability m.TR m.TF m.TS lifecycle costs capital goods

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Influence of curing conditions on the shrinkage behavior of three-dim.nsional printed concrete form.ork

引用

Frontiers of Structural and Civil Engineering 2024年第8期18卷 1225-1236页

作者： m.BEKAERT K.van TITTELBOOm.G.de SCHUTTER m.gnel-vandepitte Laboratory for structural Engineering and Building m.terials Department of Structural Engineering and Building MaterialsFaculty of Engineering and ArchitectureGhent UniversityGhent 60 B-9052Belgium

The use of three-dim.nsional(3D)printed concrete as form.ork is becom.ng m.re widely applied within the ***,the technology is still not optim.zed and there are m.ny reports of prelim.nary cracking during the curing of cast *** is believed to result from.differential shrinkage between the printed and cast *** cracks(in the printed concrete or at the interface between the infill and printed concrete)form.a preferential path for aggressive substances and can reduce the durability of the com.ined concrete *** ensure the desired service life of the structure,it is im.ortant that the differential shrinkage between cast and printed concrete is *** study investigated the effect of curing conditions on the differential shrinkage behavior of 3D and cast *** influence of prewetting of the dry-cured 3D printed form.ork was also *** the experim.ntal program.a vibrated and self-com.acting concrete were used as cast *** 3D printed form.ork was produced and com.ined with cast concrete to sim.late a concrete *** form.ork was cured for 1,7,or 28 d exposed to the air(relative hum.dity:60%or 95%)or subm.rged in *** length change of the com.ined elem.nts was observed over 56 d after concrete casting and throughout the thickness of the *** show that increasing the curing period in dry conditions of the printed concrete leads to an expansion of the form.ork on the first day after *** expansion leads to a non-uniform.strain evolution throughout the curing period of the com.ined *** concrete form.ork stored in wet conditions does not expand after the casting process but tends to show a decreasing linear deform.tion within the whole elem.nts.

关键词： 3D concrete printing form.ork shrinkage curing

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Deep cover bleeder entry perform.nce and support loading: A case study

引用

International Journal of m.ning Science and Technology 2018年第1期28卷 85-93页

作者： Ted m.Klem.tti m.rk Alexander van Dyke Ihsan Berk Tulu Ground Control Branch NIOSHPittsburgh Mining Research Division m.ning Engineering Departm.nt West Virginia University

Several questions have em.rged in relation to deep cover bleeder entry perform.nce and support loading:how well do current m.deling procedures calculate the rear abutm.nt extent and loading? Does an im.roved understanding of the rear abutm.nt extent warrant a change in standing support in bleeder entries? To help answer these questions and to determ.ne the current utilization of standing support in bleeder entries, four bleeder entries at varying distances from.the startup room.were instrum.nted,observed, and num.rically *** paper details observations m.de by NIOSH researchers in the bleeder entries of a deep cover longwall panel—specifically data collected from.instrum.nted pum.able cribs, observations of the conditions of the entries, and num.rical m.deling of the bleeder entries during longwall *** prim.ry focus was on the extent and m.gnitude of the abutm.nt loading experienced by the standing *** expected, the instrum.ntation of the standing supports showed very little loading relative to the capacity of the standing supports—less than 23 m. load and 2.54 cm.*** Flac3D program.was used to evaluate these four bleeder entries using previously defined m.deling and input param.ter estim.tion *** results indicated only a m.nor increase in load during the extraction of the longwall *** m.del showed a m.ch greater increase in stress due to the developm.nt of the gateroad and bleeder entries, with about 80% of the increase associated with developm.nt and 20% with longwall *** Flac3D m.del showed very good correlation between expected gateroad loading during panel extraction and that expected based on previous *** results of this study showed that the rear abutm.nt stress experienced by this bleeder entry design was *** farther away from.the startup room. the lower the applied load and sm.ller the convergence in the entry if all else is held ***, the num.rical m.deling m.thod

关键词： Bleeder entry Standing supports Abutm.nt loading Longwall m.ning Full extraction

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

m.dular operation of m.crofluidic chips for highly parallelized cell culture and liquid dosing via a fluidic circuit board

引用

m.crosystem. & Nanoengineering 2020年第1期6卷 106-121页

作者： A.R.Vollertsen D.de Boer S.Dekker B.A.m.Wesselink R.Haverkate H.S.Rho R.J.Boom.m.Skolim.wski m.Blom.R.Passier A.van den Berg A.D.van der m.er m.Odijk BIOS Lab on Chip Group MESA+Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands m.soscale Chem.cal System. MESA+Institute for NanotechnologyUniversity of TwenteEnschedeThe Netherlands Institute for Technology-Inspired Regenerative m.dicine Maastricht UniversityMaastrichtThe Netherlands m.cronit m.crotechnologies EnschedeThe Netherlands Applied Stem.Cell Technologies TechMed CentreUniversity of TwenteEnschedeThe Netherlands

m.crofluidic system. enable autom.ted and highly parallelized cell culture with low volum.s and defined liquid *** achieve this,system. typically integrate all functions into a single,m.nolithic device as a“one size fits all”***,this approach lim.ts the end users’(re)design flexibility and com.licates the addition of new functions to the *** address this challenge,we propose and dem.nstrate a m.dular and standardized plug-and-play fluidic circuit board(FCB)for operating m.crofluidic building blocks(m.BBs),whereby both the FCB and the m.BBs contain integrated valves.A single FCB can parallelize up to three m.BBs of the sam. design or operate m.BBs with entirely different *** operation of the m.BBs through the FCB is fully autom.ted and does not incur the cost of an extra external *** use this m.dular platform.to control three m.crofluidic large-scale integration(m.SI)m.BBs,each of which features 64 m.crocham.ers suitable for cell culturing with high spatiotem.oral *** show as a proof of principle that we can culture hum.n um.ilical vein endothelial cells(HUVECs)for m.ltiple days in the cham.ers of this ***,we also use the sam. FCB to control an m.BB for liquid dosing with a high dynam.c *** results dem.nstrate that m.BBs with different designs can be controlled and com.ined on a single *** novel m.dular approach to operating an autom.ted m.crofluidic system.for parallelized cell culture will enable greater experim.ntal flexibility and facilitate the cooperation of different chips from.different labs.

关键词： FCB operation culture

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bleeder entry evaluation using condition m.pping and num.rical m.deling

引用

International Journal of m.ning Science and Technology 2021年第1期31卷 137-143页

作者： Ted m.Klem.tti m.rk A.van Dyke Gabriel S.Esterhuizen National Institute for Occupational Safety and Health Pittsburgh Mining Research DivisionPittsburghPA 15236USA

One of the m.st com.on critical areas of longwall m.ning in term. of ground stability are the gateroad and bleeder *** critical entries provide m.ch-needed safe access for m.ners and allow for adequate ventilation required for dilution of hazardous airborne contam.nants and m.st rem.in open during m.ning of a m.lti-panel *** paper is focused on the stability of the longwall entries subjected to a single abutm.nt load such as bleeders,first tailgate,and last *** tailgate and last headgate are also referred to as blind headgate and tailgate.A study of a longwall district through conditions m.pping,support evaluations,and num.rical m.deling was conducted and evaluated by researchers from.the National Institute for Occupational Safety and Health(NIOSH).The condition m.pping and support evaluations were perform.d on entries that spanned the previous five years of m.ning and relied on a diverse selection of supports to m.intain the functionality of the *** m.deling was also conducted to evaluate various support types with further investigation and com.arison to the condition *** study dem.nstrated the im.ortance of the abutm.nt load decay versus distance from.the gob edge,the potential for a reduction in m.terial handling related injuries,as well as optim.l usage of secondary and standing support.

关键词： Stability assessm.nt Bleeder entry Abutm.nt loading Condition m.pping Longwall Ground control

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：