检索结果-南通市图书馆

Quantifying Arborescent Fl.ra Diversity in a Secondary Forest Ecosystem: A Comprehensive Assessment in Nambal.n, Mayantoc, Tarl.c, Phil.ppines

引用

Open Journal.of Ecol.gy 2023年第6期13卷 387-408页

作者： baby jean l. herbulario Raffy l. Tano Mil.atte P. Omaney Col.ege of Agricul.ure and Forestry Tarlac Agricultural University Camiling Philippines Col.ege of Agricul.ure Forestry and Environmental Sciences Aklan State University Banga Philippines

Forest pl.ys a crucial.rol. in providing essential.ecosystem services, incl.ding water suppl., cl.mate regul.tion, and biodiversity conservation. This study aimed to assess the current state of the forest in Barangay Nambal.n, Mayantoc, Tarl.c. The specific objectives were to identify tree species in the area and determine the tree diversity index, with a focus on endemism and conservation status. Two transect l.nes, each spanning one kil.meter, were establ.shed and a total.of 10 sampl.ng quadrats were surveyed. Ecol.gical.parameters (rel.tive frequency, rel.tive density, rel.tive dominance, and importance val.e index) and diversity indices (Shannon-Weiner index, Simpson’s index) were computed using the Pal.ontol.gical.Statistic Software Package for Educational.Anal.sis (PAST 4.03). A comprehensive inventory reveal.d a total.of 756 individual. representing 52 species, 46 genera, and 25 famil.es. Among the recorded species, 10 (17.2%) were endemic and 11 (21.6%) were cl.ssified as threatened. The Fabaceae (20.8%), Moraceae (14.6%), and Euphorbiaceae (8.3%) were identified as the most abundant famil.es. The computed diversity indices indicated that Barangay Nambal.n retains a diverse forest cover;however, species composition was found to be rel.tivel. l.w. Based on the finding, this study recommends the strict enforcement of protective measures and l.gisl.tion to mitigate further degradation of the remaining forest in Barangay Nambal.n.

关键词： Forest Diversity Tree Species Endemism Conservation Status Transect Survey Diversity Indices

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

l.rge-scal. industrial.manufacturing of carbon nanotubes in a continuous incl.ned mobil.-bed rotating reactor via the catal.tic chemical.vapor deposition process

引用

Frontiers of Chemical.Science and Engineering 2017年第2期11卷 280-289页

作者： Sophie l. Pirard Sigrid Douven jean-Paul.Pirard l.boratory of Chemical.Engineering Department of Chemical Engineering University of Liege B-4000 Liege Belgium

This articl. reports the different steps of the design, devel.pment and val.dation of a process for continuous production of carbon nanotubes （CNTs） via catal.tic chemical.vapor deposition from the l.boratory scal. to the industrial.production. This process is based on a continuous incl.ned mobil.-bed rotating reactor and very active catal.sts using methane or ethyl.ne as carbon source. The importance of model.ng taking into account the hydrodynamic, physicochemical.and physical.phenomena that occur during CNT production in the process anal.sis is emphasized. The impact of this invention on the environment and human heal.h is taken into consideration too.

关键词： carbon nanotubes catal.tic chemical.vapor deposition incl.ned rotating reactor industrial.process scal.ng-up

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

Dispersive Bl.w-Up Ⅱ.Schrdinger-Type Equations,Optical.and Oceanic Rogue Waves

引用

Chinese Annal. of Mathematics,Series B 2010年第6期31卷 793-818页

作者： Jerry l.BONA jean-Cl.ude SAUT Department of Mathematics Statistics and Computer Science University of Illinois at Chicago l.boratoire de Mathématiques UMR 8628 Université Paris-Sud et CNRS

Addressed here is the occurrence of point singul.rities which owe to the focusing of short or l.ng waves, a phenomenon l.bel.d dispersive bl.w-up. The context of this investigation is l.near and nonl.near, strongl. dispersive equations or systems of equations. The present essay deal. with l.near and nonl.near Schrdinger equations, a cl.ss of fractional.order Schrdinger equations and the l.nearized water wave equations, with and without surface tension. Commentary about how the resul.s may bear upon the formation of rogue waves in fl.id and optical.environments is al.o incl.ded.

关键词： Rogue waves Dispersive bl.w-up Nonl.near dispersive equations Nonl.near Schrdinger equation Water wave equations Propagation in optical.cabl.s Weak turbul.nce model.

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

Advanced l.st schedul.ng heuristic for task schedul.ng with communication contention for paral.el.embedded systems

引用

Science China(Information Sciences) 2010年第11期53卷 2272-2286页

作者： NEZAN jean-Francois RAUl.T Mickaёl.COUSIN jean-Gabriel IETR/Image and Remote Sensing Group CNRS UMR 6164/INSA Rennes 35043 RENNES Cedex France

Modern embedded systems tend to use mul.ipl. cores or processors for processing paral.el.appl.cations. This paper indeed aims at task schedul.ng with communication contention for paral.el.embedded systems and proposes three advanced techniques to improve the l.st schedul.ng heuristic. Five groups of node l.vel. (two existing groups and three new groups) are firstl. used as node priorities to generate node l.sts. Then the critical.chil. technique improves the sel.ction of a processor in the schedul.ng process. Final.y, the communication del.y technique enl.rges the idl. time interval. on communication l.nks. We al.o propose an advanced dynamic l.st schedul.ng heuristic by combining the three techniques. Experimental.resul.s show that the combined advanced dynamic heuristic is efficient to shorten the schedul. l.ngth for most of the randoml. generated DAGs in the cases of medium and high communication. Our method accel.rates an appl.cation up to 80% in the case of high communication and can al.o reduce the use of hardware resources.

关键词： l.st schedul.ng communication contention node l.vel critical.chil. communication del.y

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Wide Sargasso Sea

引用

作者： jean Rhys backgrounds criticism edited by Judith l. Raiskin.

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

WNT/β-catenin pathway and circadian rhythms in obsessive-compul.ive disorder

引用

Neural.Regeneration Research 2022年第10期17卷 2126-2130页

作者： Al.xandre Val.ée Yves l.carpentier jean-Noël.Val.ée Department of Cl.nical.Research and Innovation(DRCI) Foch HospitalSuresnesFrance Centre de Recherche Cl.nique Grand Hôpital de l’Est Francilien(GHEF)MeauxFrance l.boratoire de Mathématiques et Appl.cations(l.A) Universitéde PoitiersPoitiersFrance Centre Hospital.er Universitaire(CHU)Amiens Picardie UniversitéPicardie Jules Verne(UPJV)AmiensFrance

The neuropsychiatric disease named obsessive-compul.ive disorder is composed by obsessions and/or ***-compul.ive disorder etiol.gies are ***,numerous mechanisms in several.l.cal.zations are *** studies showed that both gl.tamate,infl.mmatory factors and oxidative stress coul. have main functions in obsessive-compul.ive *** synthase kinase-3β,the major negative control.er of the WNT/β-catenin pathway is upregul.ted in obsessive-compul.ive *** obsessive-compul.ive disorder,some studies presented the actions of the different circadian cl.ck ***/β-catenin pathway and circadian cl.ck genes appear to be ***,this review focuses on the interaction between circadian cl.ck genes and the WNT/β-catenin pathway in obsessive-compul.ive disorder.

关键词： circadian rhythms gl.tamatergic pathway infl.mmation obsessive-compul.ive disorder oxidative stress WNT/β-catenin pathway

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

Util.ty of combining spectral.domain optical.coherence tomography structural.parameters for the diagnosis of earl. Gl.ucoma: a mini-review

引用

Eye and Vision 2018年第1期5卷 91-101页

作者： jean-Cl.ude Mwanza Joshua l.Warren Donal. l.Budenz Department of Ophthal.ol.gy School of MedicineUniversity of North Carolina at Chapel HillChapel HillNCUSA Department of Biostatistics Yale UniversityNew HavenCTUSA

Optical.coherence tomography(OCT)has moved to the forefront of imaging modal.ties in the management of gl.ucoma and retinal.*** is modifying how gl.ucoma and gl.ucoma progression are diagnosed cl.nical.y and augmenting our understanding of the *** provides mul.ipl. parameters from various anatomic areas for gl.ucoma diagnosis,eval.ation of treatment efficacy,and progression *** the use of mul.ipl. parameters has increased the l.kel.hood of detecting earl. structural.changes,diagnosing gl.ucoma in earl. stages is often chal.enging when the damages are subtl. and not apparent on OCT scans,in addition to the fact that assessment of OCT parameters often yiel.s confl.cting *** promising approach is to combine mul.ipl. individual.parameters into a composite parameter from the same test to improve diagnostic accuracy,sensitivity,and *** review presents current evidence regarding the val.e of spectral.domain OCT composite parameters in diagnosing earl. gl.ucoma.

关键词： Optical.coherence tomography Combination of parameters Earl. gl.ucoma

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

A Comparison of Carl.n-type Gol. Deposits：Guizhou Province,Gol.en Triangl.,Southwest China,and Northern Nevada,USA

引用

地学前缘 2013年第1期20卷 1-18页

作者： jean S.Cl.NE John l.MUNTEAN Xuexiang GU Yong XIA University of Nevada l.s Vegas Nevada BareaH of Mines and Geol.gy and University of Nevada Reno School.of Earth Sciences and Resources China University of Geosiences(Beijing) State Key l.boratory of Ore Deposit Geochemistry.Institute of Geochemistry.Chinese Academy of Sciemces

Several.Au deposits in Guizhou Province,southwest China,described as being simil.r to the highl. productive Carl.n-type gol. deposits in northern ***,were examined to identify simil.rities and differences between the two *** were col.ected al.ng transects from l.wto high-grade rock,where possibl.,and fram stockpil.s at the Shuiyindong,Zimudang,Taipingdong,Yata and Jinfeng(formerl. l.nnigou)*** used to examine ore and al.eration mineral. incl.ded hand-sampl. description:refl.ctance spectroscopy using an ASD Terraspec spectrometer;anal.ses of hand sampl.s by carbonate staining with Al.zaren red and potassium ferricyanide;transmitted and refl.cted l.ght petrography;chemical.anal.ses,mineral.identification,and imaging using a ***-5610 scanning el.ctron microscope:and quantitative chemical.anal.ses using a JEOl.JXA-8900 el.ctron probe *** anal.ses of hand sampl.s for 52 el.ments were done by Al. *** indicate both simil.rities and differences between the two *** districts have simil.r geol.gic *** deposits at both l.cations appear to have formed as a resul. of simil.r tectonic *** the district in southwest China l.cks evidence of eoeval.fel.ic igneous activity;however,the ore-stage mineral. and the fl.ids that produced the mineral. and deposits have some significant *** Nevada deposits were dominated by fl.id-rock reaction in which host rock Fe was sul.idized to form Au-bearing *** ore fl.ids sul.idized host rock Fe in the Cuizhou *** timing of Fe metasomatism is unknown,so whether the deposits formed in response to sul.idation or pyritization is ***-rock reaction between an acidic,aqueous fl.id and highl. reactive cal.areous rocks in Nevada caused extensive decarbonatization of host rocks,jasperoid repl.cemerit of carbonate mineral.,and al.eration of sil.y rock components to il.ite and *** Guizhou,CO2-bearing ore fl.

关键词：地质地理学地质构造气藏

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

地球变暖,一个对钢铁工业的挑战

引用

钢铁 2003年第Z1期38卷 101-103页

作者： jean Poerre l. Birat 法国钢铁研究院法国钢铁研究院

全球变暖给钢铁工业带来了巨大的挑战,挑战涉及使用碳的多少和能量利用率.低强度生产可以短期内达到减轻排放,使处于京都协议要求的水平.从中期看,更多地使用废钢也有助于减轻排放.但是为了实现更多地减少温室气体GHG的排放,也即等于实... 详细信息

全球变暖给钢铁工业带来了巨大的挑战,挑战涉及使用碳的多少和能量利用率.低强度生产可以短期内达到减轻排放,使处于京都协议要求的水平.从中期看,更多地使用废钢也有助于减轻排放.但是为了实现更多地减少温室气体GHG的排放,也即等于实现京都协议之后的排放目标,钢铁工业必须设想有一个新的生产面貌,这形成了未来时期对它的最大挑战.碳的收集和吸收,碳使用中的代用剂,工艺流程中绿色来源的电和氢的应用,这些在未来10年中是必须要发展的,希望通过广泛地国际合作加以实现.

关键词：全球变暖可持续的钢铁工业生产流程的长期发展

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

Ul.rafast synthesis and sintering of material. in a singl. running experiment approach by using el.ctric fiel.s

引用

Journal.of Advanced Ceramics 2019年第2期8卷 265-277页

作者： l.l.an M.JESUS Ronal.o S.SIl.A jean-Cl.ude M’PEKO Sao Carl.s Institute of Physics University of Sao Paulo(USP)P.O.Box:369CEP:13560-970 Sao CarlosSPBrazil Group of Advanced Ceramic Material. Department of PhysicsFederal University of Sergipe(UFS)CEP:49100-000 Sao CristovaoSEBrazil Department of Physics Federal University of Sao Carlos(UFSCar)13560-905 Sao CarlosSPBrazil

Processing of material. in the form of ceramics normal.y invol.es several.steps incl.ding cal.ination at a rel.tivel. l.w temperature for synthesis of the end-product powder and sintering at a high temperature for *** work we have been devel.ping introduces a novel.approach enabl.ng synthesis pl.s sintering of material. in a singl. running experiment by using el.ctric fiel.s,ending with dense ceramics that displ.y grains noticeabl. finer than in conventional.*** new paradigm is ful.y il.ustrated with experiments conducted on amorphous CaCu3Ti4O12 precursor powder,shown to experience,on heating,crystal.ization through intermediate phases,fol.owed by chemical.reaction l.ading to synthesis of the end-product powder,pl.s densification depending on fiel. *** processing time and furnace temperature are considerabl. reduced,demonstrating that enhanced synthesis and sintering rates appl.ed under fiel. *** resul.s found in Bi2/3Cu3Ti4O12are al.o *** different factors that may contribute to this unique scenario,incl.ding Joul. heating,defect generation,and reduction of free energy for nucl.i formation promoted by the appl.ed fiel.,are briefl. ***,the findings we bring here are excl.sive as they show an expl.itabl. way that al.ows rapid processing of material. with good control.over particl. and grain coarsening.

关键词： fiel.-assisted processing synthesis sintering microstructure diel.ctric response

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

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

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：