检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

早产儿营养的最优化

中国当代儿科杂志 2017年第1期19卷 1-19页

作者： william w.hay 黑明燕(摘译) Perinatal Research Center Child Maternal Health ProgramColorado Clinical and Translational Sciences Institute University of Colorado School of MedicineAuroraColoradoUSA 不详

早产儿营养补给的目标是使早产儿能够达到同胎龄健康胎儿的正常生长速率,并且在器官生长、组织成分、以及细胞数量和结构方面也能达到健康胎儿水平。营养物质的数量与质量对于早产儿的正常生长发育、包括神经系统发育是至关重要的。基... 详细信息

早产儿营养补给的目标是使早产儿能够达到同胎龄健康胎儿的正常生长速率,并且在器官生长、组织成分、以及细胞数量和结构方面也能达到健康胎儿水平。营养物质的数量与质量对于早产儿的正常生长发育、包括神经系统发育是至关重要的。基本营养素的供给不足不仅会造成生长受限,而且会增加病死率或影响神经发育结局。早产儿在NICU住院期间的生长速率在神经发育及整个人体发育的结局中发挥了重要作用。尽管对于最佳营养的需求非常明显,但早产儿生长落后的例子比比皆是。因此,根据总的能量及蛋白质需求以及个体成分如氨基酸、碳水化合物及脂肪,甚至细化到氧气的需求来优化早产儿的营养是非常必要的。该综述阐述了早产儿科学合理的营养需求、具有实用性的营养指南以及早产儿静脉营养、肠内营养的方法步骤。包括氨基酸在内的静脉营养,应该从一出生便按照相应胎龄所适合的速率开始补充。肠内营养则应在出生后尽早开始,首选母亲的初乳和牛奶。肠内营养应根据热能需要开始建立并在能耐受的范围内快速增加,保持营养摄入在推荐速率的同时相应地减少静脉营养摄入量。制定一个合理的喂养方案对于改善营养状况及相关的转归是重要的。什么是早产儿的最佳营养和生长速率尚有待于进一步的研究来确定,这种最佳营养不仅能使早产儿神经认知得到最充分的发育,同时还要最大程度地限制其远期发生慢性疾病的风险。

关键词：静脉营养胃肠外营养肠内营养氨基酸葡萄糖脂肪坏死性小肠结肠炎早产儿

Identification of herbal medicinal materials using DNA barcodes

在线全文

学校读者我要写书评

暂无评论

Journal of Systematics and Evolution 2011年第3期49卷 271-283页

作者： Paul Pui-hay BUT Pang-Chui SHAw School of Life Sciences The Chinese University of Hong KongShatinN.T.Hong KongChina State Key Laboratory of Phytochemistry and Plant Resources in w.st China(CUHK) Institute of Chinese MedicineThe Chinese University of Hong KongShatinN.T.Hong KongChina

Herbal medicinal materials have been used w.rldw.de for centuries to maintain health and to treat ***,adulteration of herbal medicines remains a major concern of users and industry for reasons of safety and *** of herbal medicinal materials by DNA technology has been w.dely applied,started from the *** recent years,DNA barcoding of global plant species using four standard barcodes(rbcL,matK,trnH-psbA and ITS) has been a major focus in the fields of biodiversity and *** DNA barcodes can also be used as reliable tools to facilitate the identification of herbal medicinal materials for the safe use of herbs,quality control,and forensic *** studies have applied these DNA barcodes for the identification of herbal medicinal species and their *** present article review. efforts in the identification of herbal medicinal materials using the standard DNA barcodes and other DNA sequence-based markers.

关键词： DNA barcode herbal medicinal materials internal transcribed spacer(ITS) matK molecular identification rbcL trnH-psbA.

Gut microbiome alters functions of mutant p53 to promote tumorigenesis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2020年第1期5卷 491-492页

作者： Harry Cheuk hay Lau Jun Yu Institute of Digestive Disease Department of Medicine and TherapeuticsState Key Laboratory of Digestive DiseaseLi Ka Shing Institute of Health SciencesCUHK Shenzhen Research InstituteThe Chinese University of Hong KongSha TinN.T.Hong Kong

In a recent study in Nature,Kadosh et al.1 established a landmark relationship betw.en the gut microbiome and host epigenetics in intestinal *** demonstrated the substantial plasticity of mutant p53 in w.T-driven tumo... 详细信息

关键词： tumorigenesis involvement al

Physicochemical characterization of forest and sugarcane leaf combustion’s particulate matters using electron microscopy,EDS,XRD and TGA

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

Journal of Environmental Sciences 2021年第1期33卷 296-310页

作者： hay Mon Oo Preechar Karin Nuw.ng Chollacoop Katsunori Hanamura Faculty of Engineering King Mongkut's Institute of Technology LadkrabangBangkok 10520Thailand National Metal and Materials Technology Center National Science and Technology Development AgencyPathum Thani 12120Thailand School of Engineering Tokyo Institute of TechnologyTokyo 152-8552Japan

Physical characteristics and quantitative elemental composition of PM and residual ash produced from sugarcane leaves(SCL)combustion w.re investigated using TEM-EDS compared w.th forest leaves(FRL).SEM-EDS w.s used to analyze the microstructure and chemical composition of biomass raw.leaves and *** analysis w.s also performed to investigate the characterization of the crystalline nanostructure,structure of PM,and residual ash compared to the TEM image processing *** oxidation kinetics of biomass raw.materials,PM,and residual ash w.re investigated by *** morphology of fine and ultrafine agglomerate structure of SCL soot and residual ash are not significantly different from the FRL soot and residual *** average diameter sizes of single primary nanoparticles of SCL and FRL soot are approximately 37 nm and 35 nm,w.ile the sizes of residual ash are about 18 nm and 22 nm,*** single primary nanoparticles of soot are mainly composed of curve line crystallites of carbon fringes,w.ile residual ash is composed of straightline lattice *** average fringe lengths of SCL and FRL soot are about 1.25 nm and 1.04 nm from the outer shell and 0.89 nm and 0.74 nm from the inner *** interlayer spacing of curve line carbon fringes of SCL and FRL soot is approximately 0.359 nm and 0.362 nm by the TEM image analysis and it w.s matched w.th XRD *** biomass PMs are mainly composed of soot,Si,Ca,and K compounds:SiO_(2),CaCO3,and KCl.

关键词： Biomass combustion Particulate matter Soot Ashes TEM XRD TGA

OKANAGAN COLLEGE CENTRE OF EXCELLENCE IN SUSTAINABLE BUILDING TECHNOLOGIES AND RENEw.BLE ENERGY CONSERVATION

在线全文

学校读者我要写书评

暂无评论

Journal of Green Building 2011年第1期6卷 14-24页

作者： Andrew.hay Robert Parlane Vice President Education Okanagan College1000 KLO RoadKelownaBritish ColumbiaCanadaV1Y 4X8 CEI Architecture Planning Interiors 100-1060 Manhattan DriveKelownaBritish ColumbiaCanadaV1Y 9X9

The Centre of Excellence at Okanagan College in Penticton,British Columbia is being designed as one of the most innovative and sustainable post-secondary facilities in the *** schedule for design and construction to be complete by April 2011,the tw.-storey multi-purpose facility has a mandate to provide trades and technology training and professional development to students from the province of British Columbia and *** is aimed at attaining the highest standard of sustainable building design,the Living Building *** building w.ll support a syllabus w.th a focus on the design,installation,and support of sustainable building technologies and processes,and the development and application of alternative and renew.ble *** building itself w.ll become an essential element of the educational programs that w.ll reside there,a teaching tool for education on building trades and engineering *** addition,the Okanagan Research Innovation Centre w.ll be incorporated into the building,providing opportunities for start-up companies to develop and prototype new.green technologies in a supportive and synergistic *** article w.ll demonstrate that a project w.th this level of sustainable objectives is achievable at a cost comparable to conventional building *** w.ll address how.this can be attained through an integrated design process,along w.th the numerous innovative features that have been incorporated into the building design to help it function w.th a small environmental impact,and a large educational one.

关键词： holistic design college sustainability stormw.ter management solar pow.r green roofs living building challenge net zero w.ter net zero energy

SYNTHESIS OF POLYMERS CONTAINING N-N LINKAGES

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 Polymer Science 2003年第5期21卷 541-550页

作者： Zaza Gomurashvili Allan S.hay Department of Chemistry McGill University 801 Sherbrooke Street West Montreal Ouebec Canada H3A 2K6Department of Chemistry McGill University 801 Sherbrooke Street West Montreal Ouebec Canada H3A 2K6

The N--N linkage in hydrazine is thermally stable w.en it is tetrasubstituted and there are electron-w.thdraw.nggroups attached to the nitrogen atoms. Our research on the synthesis of polymers contaning N--N linkages is review.d. TheN,N-bisimide structure has been introduced in the backbone of polymers as w.ll as a pendant group in poly(aryl ether)s togive very thermoxidatively stable polymers w.th very high glass transition temperatures. Most of the polymers form tough,flexible films. N-Aminotriazoles also form stable imides by reaction w.th anhydrides and these N-imidotriazole groups havebeen introduced as pendent groups on poly(aryl ether)s. The polymers are highly fluorescent materials. Three methods for thesynthesis of polymers containing the tetrasubstituted-azine structure w.ll be discussed: (1) oxidative coupling of bisimines;(2) condensation of bishydrazones w.th diketones; (3) poly(aryl ether azines) from the azine formed from 4-fluorobenzo-phenone by reaction w.th salts of bisphenols.

关键词： Hydrazine N-N-linkage N-aminoimide Poly(imidoaryll ether) N-aminotriazole Polyazine

Combustion characteristic and aging behavior of bimetal thermite pow.ers

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2021年第3期17卷 755-762页

作者： Hong-qi Nie hay Yee Chan Sreekumar Pisharath Huey Hoon Hng Energetics Research Institute Nanyang Technological UniversitySingapore

Nanothermites have been employed as fuel additives in energetic formulations due to their higher energy density over CHNO energetics. Nevertheless, sintering and degradation of nanoparticles significantly limit the practical use of nanothermites. In this w.rk, combustion characteristic and aging behavior of aluminum/iron oxide(Al/Fe2O3) nanothermite mixtures w.re investigated in the presence of micron-scale nickel aimed to produce bimetal thermite pow.ers. The results show.d that the alumina content in the combustion residue increased from 88.3% for Al/Fe2O3 nanothermite to 96.5% for the nanothermite mixture containing 20 w.% nickel. Finer particle sizes of combustion residue w.re obtained for the nanothermite mixtures containing nickel, indicative of the reduced agglomeration. Both results suggested a more complete combustion in the bimetal thermite pow.ers. Aging behavior of the nanothermite mixture w.s also assessed by measuring the heat of combustion of the mixture before and after aging process. The reduction in heat of combustion of nanothermite mixtures containing nickel w.s less severe as compared to a significant decrease for the nanothermite mixture w.thout nickel, indicating better aging resistance of the bimetal thermite pow.ers.

关键词： Nanothermite Bimetal Combustion efficiency Aging Thermochemical calculations

Application of DNA barcodes in Hedyotis L.(Spermacoceae,Rubiaceae)

在线全文

学校读者我要写书评

暂无评论

Journal of Systematics and Evolution 2011年第3期49卷 203-212页

作者： Mark P.SIMMONS Paul Pui-hay BUT Pang-Chui SHAw Department of Biology Colorado State University School of Life Sciences The Chinese University of Hong Kong

The potential application of DNA barcodes of plastid(matK,trnH-psbA,petD,and rbcL) and nuclear(internal transcribed spacer(ITS) of rDNA) DNA regions w.s investigated for 25 Hedyotis *** ITS show.d the best species discrimination by resolving 23 of the species as exclusive lineages w.th no shared alleles betw.en any of the 24 distinct species(*** and *** are not supported as distinct species based on our molecular and morphological data).Conversely,rbcL performed the w.rst and only resolved 10 of the species as exclusive lineages,and 10 species w.th shared *** ITS has the advantage of high PCR amplification success and it provides good intra-and interspecific variation distribution *** most pow.rful plastid markers w.re petD and trnH-psbA,but w. could amplify and sequence trnH-psbA for only 83% of the accessions *** of ITS and petD performed extremely w.ll,w.th all 24 of the distinct species resolved as exclusive lineages and no shared alleles betw.en any of the distinct *** therefore recommend ITS,or a combination of ITS and petD,as the standard DNA barcode in Hedyotis,but acknow.edge that there are no shared alleles betw.en distinct species for matK and rbcL combined.

关键词： DNA barcode Hedyotis molecular identification Rubiaceae taxonomy.

A theoretical framew.rk for improved fire suppression by linking management models w.th smart early fire detection and suppression technologies

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第5期35卷 1-13页

作者： Li Meng Jim O’Hehir Jing Gao Stefan Peters Anthony hay University of South Australia AdelaideSAAustralia Esk Spatial InvermayTASAustralia

Bushfires are devastating to forest managers,ow.ers,residents,and the natural *** tech-nological advances indicate a potential for faster response times in terms of detecting and suppressing ***,to date,all these technologies have been applied in *** paper introduces the latest fire detection and sup-pression technologies from ground to *** operations research method w.s used to assemble these technologies into a theoretical framew.rk for fire detection and *** framew.rk harnesses the advantages of satellite-based,drone,sensor,and human reporting technologies as w.ll as image processing and artificial intelligence machine *** study concludes that,if a system is designed to maximise the use of available technologies and carefully adopts them through complementary arrangements,a fire detection and resource suppression system can achieve the ultimate aim:to reduce the risk of fire hazards and the dam-age they may cause.

关键词： Forest fire Resource suppression Smart fire detection and suppression system Forest fire management Holistic system