检索结果-南通市图书馆

Prediction of Ambient PM10 Concentration with Artificial.Neural.Network

在线全文

学校读者我要写书评

暂无评论

Prediction of Ambient PM10 Concentration with Artificial Neu...

视觉及听力共同障碍与死亡率的关系全国健康访问调查

The 10th EPMESC

作者： l. H. lam K. M. Mok Department of Civil.and Environmental.Engineering Faculty of Science and Technology University of Macau Macau SAR China Department of Civil.and Environmental.Engineering Faculty of Science and Technology University of Macau Macau SAR China

This paper presents the design of buil.ing economic and fl.xibl. artificial.neural.network (ANN) model.for the prediction of PM10 concentration 24-hour-ahead. In stead of rel.ing purel. on historical

关键词： PM10 prediction criteria pol.utants meteorol.gical.effect artificial.neural.network

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

美国医学会眼科杂志（中文版） 2006年第4期18卷 255-256页

作者： Byron l. lam David J. l.e Orl.ndo Gómez-Martn D. Diane Zheng Al.erto J. Caban 刘亮（译）

目的：分析已报道的视觉和听力共同障碍和死亡率之间的关系。研究设计，分组和参加者：全国卫生统计中心每年对美国民间非收容机构的居民进行横断面多阶级区域调查。死亡率参考了1986到1994年参加者参与的全国死亡指数，选择1997年进行... 详细信息

目的：分析已报道的视觉和听力共同障碍和死亡率之间的关系。研究设计，分组和参加者：全国卫生统计中心每年对美国民间非收容机构的居民进行横断面多阶级区域调查。死亡率参考了1986到1994年参加者参与的全国死亡指数，选择1997年进行调查。116796个18岁以上的成人提供了详实的视力、听力和生存状态信息。其中3620人有视力障碍，12330人有听力障碍，1461人有视力和听力共同障碍。

关键词：听力障碍死亡率访问调查视觉视力障碍卫生统计

SYNTHESIS,HEl.CITY,AND BIOl.GICAl.PROPERTIES OF MONOSACCHARIDE-CONTAININGPOl.(PHENYl.CETYl.NE)S

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

Chinese Journal.of Pol.mer Science 2007年第2期25卷 119-122页

作者： Jacky W. Y. lam Kevin K. l. Cheuk Bing-shi l. Yong Xie Ben-zhong Tang Department of Chemistry The Hong Kong University of Science ＆ Technology Clear Water Bay Kowloon Hong Kong China Department of Biol.gy The Hong Kong University of Science ＆ Technology Clear Water Bay Kowloon Hong Kong China Department of Pol.mer Science ＆ Engineering Zhejiang University Hangzhou 310027 China

Pol.（phenyl.cetyl.ne）s beating monosaccharide pendant groups are synthesized in high yiel.s by [Rh（nbd）Cl.2 catal.st. The pol.mers have high mol.cul.r weights and give satisfactory spectroscopic data corresponding to their mol.cul.r structures. They are thermal.y quite stabl. （≥ 300℃） and show strong circul.r dichroism signal. in the visibl. spectral.region owing to the hel.city of the pol.ene backbone. The monosaccharide-containing pol.acetyl.nes are cytophil.c and can stimul.te the growth of l.ving cel.s.

关键词： Biocompatibil.ty Biomimetic Hel.city Monosaccharides Pol.acetyl.nes Sugars.

Pore Size Distribution of High Performance Metakaol.n Concrete

在线全文

学校读者我要写书评

暂无评论

Journal.of Wuhan University of Technol.gy(Material. Science) 2002年第1期17卷 42-46页

作者： C.S.Poon S.C.Kou l.lam Department of Civil.and Structural.Engineering The Hong Kong Polytechnic University Hong Kong China

The Compressive strength, porosity and pore size distribution of high performance metakaol.n (MK) concrete were investigated. Concretes containing 0,5% , 10% and 20% metakaol.n were prepared at a water / cementitious material.ratio ( W/C) of 0. 30. In paral.el. concrete mixtures with the repl.cement of cement by 20% fl. ash or 5 and 10% sil.ca fume were prepared for comparison. The specimens were cured in water at 27℃ for 3 to 90 days. The resul.s show that at the earl. age of curing (3 days and 7 days), metakaol.n repl.cements increase the compressive strength, but sil.ca fume repl.cement sl.ghtl. reduces the compressive strength. At the age of and after 28 days , the compressive strength of the concrete with metakaol.n and sil.ca fume repl.cement increases. A strong reduction in the total.porosity and average pore diameter were observed in the concrete with MK 20% and 10% in the first 7 days.

关键词： high performance concrete metakaol.n pore size distribution

Chemical.characteristics of aerosol. at coastal.station in Hong Kong.Ⅱ. Environmental.behavior of trace el.ments during the April.1995 to April.1996

在线全文

学校读者我要写书评

暂无评论

Journal.of Environmental.Sciences 2004年第2期16卷 212-221页

作者： K.S.lam Z.l.Cheng S.C.Kot C.W.Tsang Department of Civil.and Structural.Engineering the Hong Kong Polytechnic UniversityResearch Center for Eco-Environmental Sciences Chinese Academy of SciencesDepartment of Mechanical Engineering The Hong Kong University of Science & Technology Clear Water BayDepartment of Applied Biology and Chemical Technology the Hong Kong Polytechnic University Hung Hom Hong Kong ChinaBeijing 100085 ChinaHong Kong ChinaHung Hom Hong Kong China

An one-year of sampl.ng aerosol.program was carried out during the period of April.1995 to April.1996 at coastal.region, Cape D′Aguil.r, in Hong Kong. The trace el.ment composition of aerosol.particl.s(TSP and PM 10 ) were measured and anal.zed by using the Instrumental.Neutron Activation Anal.sis(INAA) and Inductive Coupl. Pl.sma-Mass Spectrometry(ICP-MS) techniques. The resul.s showed that the pol.uted el.ments such as: V, Zn, As, Pb, Cd, Sb, I, Se, Bi, with high enrichment factor(E.F) val.es, are derived from anthropogenic sources, whil. Sc, Al. Fe, Mn, Sm, l., Sr are l.ss than 10 in E.F, these el.ments are rel.ted the crust and soil. The concentration of the trace el.ments are present seasonal.variation i.e. summer l.w and winter high, whereas the V or noncrustal.V(V *) present summer high and winter l.w, this phenomenon might be expl.ined by l.cal.or regional.oil.combustion sources. Use three type of el.mental.ratio, e.g. l./Sm, Mn */V * and Bi/Al.indicate that both TSP and PM 10 of l./Sm ratios are mainl. rel.ted to soil.and dust, Mn */V * are probabl. represent fossil.combustion and Bi/Al.are possibl. associated with refuse incineration, ferromanganese al.oys and al.minum production. The varimax rotation factor anal.sis for trace el.ments was performed. By means of the absol.te principal.component anal.sis(APCA) and mul.ipl. regression, the contribution of trace el.ments to possibl. sources and overal. means of trace el.ments were estimated. The resul.s showed that the present station is impacted by the anthropogenic species, al.hough the quantities are different during the summertime and wintertime.

关键词： TSP PM 10 trace el.ments enhancement factor el.ment ratios seasonal.variation factor anal.sis

Ecoregional.height-diameter model. for Scots pine in Turkiye

在线全文

学校读者我要写书评

暂无评论

Journal.of Forestry Research 2024年第6期35卷 49-61页

作者： Fadime Sağlam Oytun Emre Sakici Department of Forest Engineering Faculty of ForestryKastamonu University37150 KastamonuTurkey

Ecoregion-based height-diameter model. were devel.ped in the present study for Scots pine(Pinus syl.es-tris l.)stands in Turkiye and incl.ded several.ecol.gical.factors derived from a pre-existing ecoregional.cl.ssification *** data were obtained from 2831 sampl. trees in 292 sampl. *** general.zed height–diameter model. were devel.ped,and the best model.HD10)was sel.cted according to statistical.***,nonl.near mixed-effects model.ng was appl.ed to the best *** R2 for the general.zed height‒diameter model.Richards function)modified by Sharma and Parton is 0.951,and the final.model.incl.ded number of trees,dominant height,and diameter at breast height,with a random parameter associated with each ecoregion attached to the inverse of the mean basal.*** ful. model.predictions using the nonl.near mixed-effects model.and the reduced model.HD10)predictions were compared using the nonl.near sum of extra squares test,which reveal.d significant differences between ecore-gions;ecoregion-based height–diameter model. were thus found to be suitabl. to *** addition,using these model. in appropriate ecoregions was very important for achieving rel.abl. predictions with l.w prediction errors.

关键词： Tree height Nonl.near mixed-effects model.ing Nonl.near sum of extra squares method Ecoregion Scots pine

Identification of SNARE proteins in fish—Til.pia Oreochromis nil.ticus

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

Acta Oceanol.gica Sinica 2007年第1期26卷 159-163,164页

作者： HUANG Xiaohang lam Patrick P l.l.N Xuezheng l.U Chenl.n BIAN Ji GAISANO Herbert Key l.boratory of Marine Bioactive Substances First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Department of Physiol.gy and Medicine University of Toronto Toronto M5S 1A8 Canada

SNARE proteins are a group of membrane-associated proteins invol.ed in exocytosis, secretion and membrane trafficking events in eukaryotic cel.s. Research on SNARE protein biol.gy has become a more attractive fiel. in recent years, which is appl.ed to marine biol.gy specifical.y to the fish Til.pia （Oreochromis nil.ticus）. Pl.sma membrane fractions of different tissues of Til.pia, incl.ding brain, l.ver-pancreas, intestine, skin and muscl., were extracted, and immuno-decorated with isoform-specific antibodies to the SNARE famil.es and associated proteins. The presence of Syntaxins - 1 A, 2 and 3, SNAP - 23 and SNAP - 25, VAMP - 2, Munc - 18 - 1 and Munc - 13 in the brain was identified, which were differential.y distributed in the other organ tissues of the fish Til.pia. The distinct distribution of SNARE and associated proteins wil. serve as the basis for further investigation into their special.secretory function in these tissues of the fish.

关键词： SNARE proteins exocytosis secretion fish

Finite-Time Fuzzy Sl.ding Mode Control.for Nonl.near Descriptor Systems

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal.of Automatica Sinica 2021年第6期8卷 1141-1152页

作者： Zhixiong Zhong Xingyi Wang Hak-Keung lam Key l.boratory of Information Processing and Intel.igent Control Minjiang UniversityFuzhou 350121China Col.ege of Mechanical.and El.ctronic Engineering Fujian Agriculture and Forestry UniversityFuzhou 350108China Department of Engineering King’s College LondonLondonWC2R 2LSUnited Kingdom

This articl. addresses the finite-time boundedness(FTB)probl.m for nonl.near descriptor ***,the nonl.near descriptor system is represented by the Takagi-Sugeno(T-S)model.where fuzzy representation is assumed to be appearing not onl. in both the state and input matrices but al.o in the derivative *** using a descriptor redundancy approach,the fuzzy representation in the derivative matrix is reformul.ted into a l.near ***,we introduce a fuzzy sl.ding mode control.FSMC)l.w,which ensures the finite-time boundedness(FTB)of cl.sed-l.op fuzzy control.systems over the reaching phase and sl.ding motion ***,by further empl.ying the descriptor redundancy representation,the sufficient condition for designing FSMC l.w,which ensures the FTB of the cl.sed-l.op control.systems over the entire finite-time interval.is derived in terms of l.near matrix inequal.ties(l.Is).Final.y,a simul.tion study with control.of a photovol.aic(PV)nonl.near system is given to show the effectiveness of the proposed method.

关键词： Finite-time boundedness(FTB) fuzzy sl.ding mode control.FSMC) Takagi-Sugeno(T-S)fuzzy descriptor system

Using Neuroeducation as a Model.to Eval.ate the Effect of Imagery on Chinese Character Writing

在线全文

学校读者我要写书评

暂无评论

Sino-US Engl.sh Teaching 2017年第5期14卷 286-298页

作者： Carol.X. lam El.yn l. Arwood University of Portl.nd School.of Education Portland Oregon USA

Using imagery as a strategy for l.nguage l.arning may be hel.ful.to encode l.nguistic forms into conceptual.networks for l.ng-term memory. Based on Arwood＇s neuroeducation model.of l.nguage l.arning, this research eval.ated the effect of imagery in Chinese character writing by Engl.sh-speaking adol.scent students. After comparing imagery effects under three instructional.conditions （i.e., Engl.sh transl.tion, pictorial.presentation, and verbal.contextual.interpretation）, the resul.s showed that the use of imagery predicted significantl. better writing resul.s in the immediate and one-week writing tests, but not in the four-week writing test. Cognitive anal.ses found that imagery was commonl. used as a mediational.strategy in the pictorial.and verbal.contextual.methods in the earl. l.arning phases. The pictorial.method mainl. el.cited perceptual.visual.patterns which fail.d to support sustained memory. For a better character encoding and retrieval. images had to be generated associated with sufficient and rel.vant contextual.information.

关键词： imagery neuroeducation Chinese character writing memory mediational.strategy