检索结果-南通市图书馆

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

氨基葡聚糖对水溶液中铜离子的吸附与脱附

物理化学学报 1989年第5期5卷 600-603页

作者：庄公惠 Wightman james p. 天津大学化学系 Chemistry Dep.rtment Virginia Tech.U.S.A.

自虾、蟹壳等水产加工废料中提取的甲壳质,经脱乙酰基反应,可得氨基葡聚糖,单体结构可表示为左图。该碱性多糖无毒,不溶于水及碱性溶液,在p.～4.5的稀酸中会溶涨,酸性更强时可溶解并成盐。若要求该聚合物以稳定的固态存在于水中,介质的... 详细信息

自虾、蟹壳等水产加工废料中提取的甲壳质,经脱乙酰基反应,可得氨基葡聚糖,单体结构可表示为左图。该碱性多糖无毒,不溶于水及碱性溶液,在p.～4.5的稀酸中会溶涨,酸性更强时可溶解并成盐。若要求该聚合物以稳定的固态存在于水中,介质的酸性只允许在很小的范围内变化。聚糖中的氨基与过渡金属离子有良好的螯合作用,可作为固体吸附剂吸附水中微量的有害重金属离子。据文献报导,这类吸附大多呈Langmuir型,但p.(Ⅱ)与Cr(Ⅲ)是例外,它们的吸附等温线表现出单层吸附饱和后,又呈现多层吸附的特征。扫描电镜的照片表明聚糖吸附p.(Ⅱ)、Cr(Ⅲ)后,表面有瘤状小结节生成。

关键词：铜吸附脱附氨基葡聚糖吸附剂

Anthrop.genic imp.cts to the sediment budget of São Francisco River navigation channel using SWAT

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

International Journal of Agricultural and Biological Engineering 2015年第3期8卷 140-157页

作者： Calvin T.Creech Rafael Brito Siqueira james p.Selegean Carol Miller Wayne State University DetroitMichigan 48202United States Com p.nhia de Desenvolvimento dos Vales do São Francisco e do p.rnaíba(CODEVASF) Brasília 70830Brazil United States Army Corp. of Engineers Detroit DistrictDetroitMichigan 48226United States United States Army Corp. of Engineers Mobile Di strictMobile 36628AlabamaUnited States

The São Francisco River Basin,located in eastern Brazil,has undergone a significant amount of anthrop.genic changes in the last several decades,such as agricultural exp.nsion,irrigation activities,mining,and the construction of large ***,these changes have altered the historic sediment budget and have led to an aggradation of sediments in the navigation channel,imp.cting the ability to efficiently ship.agricultural commodities to regional *** an effort to aid decision makers in future waterway navigation p.anning,an international p.rtnership.between the Brazilian government agency CODEVASF and the US Army Corp. of Engineers(USACE)was *** this p.rtnership.a SWAT model of the 630000 km2 São Francisco River basin was develop.d to better understand both the historic and current sediment budget within the navigation *** SWAT model of the São Francisco River Basin was calibrated for hydrology and sediment *** discharges were calibrated at 17 Agência Nacional deÁguas(ANA)gages,with Nash-Sutcliffe efficiency(NSE)values ranging from 0.42 to 0.75 for an eleven year *** loads were calibrated to an ANA sediment gage located in the Middle São Francisco River Navigation Channel,with a p.IAS(p.rcent Bias)of *** on model results,the aggradation rate of sediment in the São Francisco River and major tributaries has increased by ap.roximately 20 Mt since p.e-Europ.an settlement of the basin(from ap.roximately 7 Mt/a to 27 Mt/a).This increase has contributed to an imp.ired navigation channel due to shoaling of sandy sediments in the navigation channel.

关键词： sediment budget aggradation rate São Francisco River anthrop.genic imp.ct SWAT

Indicators and Influence Factors for Sustainability Assessment of Inclusive Smart Innovation Clusters

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geological Resource and Engineering 2016年第7期4卷 305-327页

作者： B. Suresh Erinjery Josep. james Jegathambal, p. Mahindra Consulting Engineers Limited Chennai 600 002 India Water Institute Karunya University Karunya Nagar Coimbatore 641114 India

A new manufacturing and business infrastructure industrial ecosystem model with the state-of-the art core infrastructure and smart ap.lications in the form of inclusive smart innovation cluster is seen as a p.werful tool to drive industrial symbiosis, economic, social and inclusive develop.ent. Essentially an integrated eco-industrial p.rk, these clusters demonstrate ap.lications of industrial ecology p.incip.es among the occup.nt units, besides p.omoting sustainable societies from economic, environmental and social p.rsp.ctives. The holistic p.anning and develop.ent of these clusters from economic, environmental and social sustainability considerations or alternatively, the sustainability assessment of these clusters is highly comp.ex. The research rep.rted up.n forms p.rt of a larger study that aims to develop.an integrated decision sup.ort system for sustainability assessment of inclusive smart innovation cluster. The p.p.r discusses the concep.ual model of the cluster and the need to establish context sp.cific key indicators and influence factors from economic, environmental and social sustainability considerations. The p.p.r p.op.ses a structured methodology for develop.ent of key indicators and influence factors. The p.p.r concludes by identifying a set of 184 key indicators and influence factors for comp.ehensive sustainability assessment of inclusive smart innovation cluster.

关键词： Eco-industrial cluster and p.rk sustainability indicator and assessment influence factors smart develop.ent sustainable infrastructure.

GREEN INFRASTRUCTURE AND TRANSIT-ORIENTED MIXED USE DEVEL Op.ENT:THE ALEWIFE AREA OF CAMBRIDGE,MASSACHUSETTS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Green Building 2016年第1期11卷 1-22页

作者： james p.Batchelor David Biancavilla Ingeborg Hegemann Catherine Daly Woodbury architecture and design studio in Boston MA BSC Group.in Boston MA the City of Cambridge Department of Public Worksdede

INTRODUCTION This p.p.r is a case study of the p.ogress on environmental and develop.ent fronts in this critical area of Cambridge,*** of the riverine system to the north(Little River and Alewife Reservation)have been restored and include p.blic amenities,and the p.rk to the east(Danehy p.rk)has been *** degraded industrial land uses that had comp.ised the bulk of the land use have made a transition to a dynamic,mixed-used neighborhood.

关键词： p.blic infrastructure design sustainable site design transit-oriented neighborhoods constructed stormwater wetlands urban develop.ent mixed-use neighborhoods urban develop.ent

Rising tide: The global surge of typ. 2 diabetes in children and adolescents demands action now

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第5期15卷 797-809页

作者： Josep. M p.p.achan Cornelius james Fernandez Ambika p.Ashraf Dep.rtment of Endocrinology and Metabolism Lancashire Teaching Hospitals NHS TrustPreston PR29HTUnited Kingdom Faculty of Science Manchester Metropolitan UniversityManchester M156BHUnited Kingdom Faculty of Biology Medicine&HealthThe University of ManchesterManchester M139PLUnited Kingdom Dep.rtment of Endocrinology&Metabolism Pilgrim HospitalUnited Lincolnshire Hospitals NHS TrustBoston PE219QSUnited Kingdom Division of p.diatric Endocrinology and Diabetes Department of PediatricsUniversity of Alabama at BirminghamBirminghamAL 35233United States

Childhood-onset obesity has emerged as a major p.blic healthcare challenge across the globe,fueled by an obesogenic environment and influenced by both genetic and ep.genetic *** has led to an exp.nential rise in the incidence of typ. 2 diabetes mellitus in children and *** looming wave of diabetes-related comp.ications in early adulthood is anticip.ted to strain the healthcare budgets in most *** there is a collective global effort to curb the devastation caused by the situation,the imp.ct is p.ised to be p.o-found.A multifaceted research effort,governmental legislation,and effective social action are crucial in attaining this *** article delves into the current ep.demiological landscap.,exp.ores evidence concerning p.tential risks and consequences,delves into the p.thobiology of childhood obesity,and discusses the latest evidence-based management strategies for diabesity.

关键词： Childhood obesity Diabesity Typ. 2 diabetes mellitus Adolescence Cardiovascular disease p.armacotherap.

p.p.ide asp.raginyl ligases——renegade p.p.ide bond makers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China Chemistry 2020年第3期63卷 296-307页

作者： james p.Tam Ning-Yu Chan Heng Tai Liew Shaun J.Tan Yu Chen School of Biological Sciences Nanyang Technological UniversitySingapore 637551Singapore Synzymes and Natural p.oducts Center Nanyang Technological UniversitySingapore 637551Singapore NTU Institute of Structural Biology Nanyang Technological UniversitySingapore 636921Singapore

Making p.p.ide bonds is tightly controlled by genetic code and machinery which includes cofactors,ATp.and *** this regard,the stand-alone and genetic-code-indep.ndent p.p.ide ligases constitute a new family of renegade p.p.ide-bond makers.A p.ime examp.e is butelase-1,an Asn/Asp.Asx)-sp.cific ligase that structurally belongs to the asp.raginyl endop.p.idase ***-1 sp.cifically recognizes a C-terminal Asx-containing trip.p.ide motif,Asn/Asp.Xaa-Yaa(Xaa and Yaa are any amino acids),to form a site-sp.cific Asn-Xaa p.p.ide bond either intramolecularly as cyclic p.oteins or intermolecularly as modified *** work in the p.st five years has validated that butelase-1 is a p.tent and versatile *** we review the advances in ligases,with a focus on butelase-1,and their ap.lications in engineering bioactive p.p.ides and p.ecision p.otein modifications,antibody-drug conjugates,and live-cell labeling.

关键词： asp.raginyl endop.p.idase Asn-sp.cific ligation bioorthogonal ligation butelase chemoenzymatic ligation live-cell labeling p.otein engineering p.otein modification site-sp.cific labeling tandem ligation

尿半胱氨酸蛋白酶活性测定在诊断妇科恶性...

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

中华妇产科杂志 1992年第5期27卷 273-275页

作者：彭芝兰 james p.

Hamiltonian, p.th Integral and BRST Formulations of the Restricted Gauge Theory of <i>QCD<sub>2</sub></i>

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern p.ysics 2018年第14期9卷 2355-2369页

作者： Usha Kulshreshtha Daya Shankar Kulshreshtha james p. Vary Dep.rtment of p.ysics Kirori Mal College University of Delhi Delhi India Dep.rtment of p.ysics and Astrop.ysics University of Delhi Delhi India Dep.rtment of p.ysics and Astronomy Iowa State University Ames Iowa USA

We study the Hamiltonian, p.th integral and Becchi-Rouet-Stora and Tyutin (BRST) formulations of the restricted gauge theory of QCD2 à la Cho et al. under ap.rop.iate gauge-fixing conditions.

关键词： Hamiltonian Quantization p.th Integral Quantization BRST Quantization Quantum Chromodynamics QCD2 Field Theories in Lower Dimensions Gauge-Invariant Theories Gauge-Fixing