检索结果-南通市图书馆

阿芬太尼和艾司洛尔对气管插管时循环和儿茶酚胺反应的影响

在线全文

学校读者我要写书评

暂无评论

中华麻醉学杂志 1999年第3期19卷 146-148页

作者：龚志毅 J.C.Yang k.f.ng T.S.Siu 罗爱伦中国医学科学院香港大学麻醉系

目的　比较阿芬太尼和艾司洛尔对气管插管时循环及儿茶酚胺反应的影响。方法　 35例病人随机分为 3组 ,A组为对照组 ,B组为艾司洛尔组 ,C组为阿芬太尼组。插管前 B、C组分别给予2 mg/ kg艾司洛尔、30μg/ kg阿芬太尼。静注硫喷妥钠和维... 详细信息

目的　比较阿芬太尼和艾司洛尔对气管插管时循环及儿茶酚胺反应的影响。方法　 35例病人随机分为 3组 ,A组为对照组 ,B组为艾司洛尔组 ,C组为阿芬太尼组。插管前 B、C组分别给予2 mg/ kg艾司洛尔、30μg/ kg阿芬太尼。静注硫喷妥钠和维库溴铵诱导插管。结果　插管后 3分 ,阿芬太尼组收缩压显著降低 (Pkg可在一定程度上缓解插管时的循环反应。阿芬太尼 30μg/ kg能完全抑制插管时的循环及儿茶酚胺反应。

关键词：气管内插管术阿芬太尼艾司洛尔血液动力学

奶蛋白浓度变异与遗传多态性及环境因素的关系

在线全文

学校读者我要写书评

暂无评论

草食家畜 1988年第1期 30-33页

作者： k.f.ng-kwai-Hang ,张细权

研究主要奶蛋白的变异对营养学家来说是十分有意义的,因为不同酪蛋白和乳清蛋白在其氨基酸组成上差别较大。奶蛋白的营养价值取决于奶中各种蛋白的含量。对那些关心奶蛋白特殊功能特性的食品专家来说,不同蛋白质浓度的变异对奶的加工特... 详细信息

研究主要奶蛋白的变异对营养学家来说是十分有意义的,因为不同酪蛋白和乳清蛋白在其氨基酸组成上差别较大。奶蛋白的营养价值取决于奶中各种蛋白的含量。对那些关心奶蛋白特殊功能特性的食品专家来说,不同蛋白质浓度的变异对奶的加工特性影响是很大的。与大量有关遗传和环境因素影响牛奶中总蛋白量和总酪蛋白量的报告比较,

关键词：酪蛋白乳清蛋白球蛋白表型磷蛋白乳白蛋白乳蛋白奶蛋白蛋白浓度泌乳中期

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

毛里求斯十五年来甘蔗施氮技术研究

甘蔗糖业 1990年第5期19卷 29-30页

作者： k.f.ng kee kwong 张国庆毛里求斯糖业研究所

通过过去15年的研究,已经比较多地了解了毛里求斯土壤中氮素去向和行为,肥料氮素在土壤中的移动性较小,肥料氮素的淋溶损失少于5%。从而使蔗农在劳力短缺的情况下更加简便和机动地进行甘蔗施肥,新植蔗可在植蔗时与磷钾肥一起施下,宿根... 详细信息

通过过去15年的研究,已经比较多地了解了毛里求斯土壤中氮素去向和行为,肥料氮素在土壤中的移动性较小,肥料氮素的淋溶损失少于5%。从而使蔗农在劳力短缺的情况下更加简便和机动地进行甘蔗施肥,新植蔗可在植蔗时与磷钾肥一起施下,宿根蔗则可迟至12月份才施。但是目前尚未有可能减少甘蔗施氮量。

关键词：甘蔗施氮技术毛里求斯

Stability and Generalization of Hypergraph Collaborative Networks

在线全文

学校读者我要写书评

暂无评论

Machine Intelligence Research 2024年第1期21卷 184-196页

作者： Michael k.ng Hanrui Wu Andy Yip Institute of Data Science The University of Hong KongHong KongChina Department of Mathematics The University of Hong KongHong KongChina College of Information Science and Technology Jinan UniversityGuangzhou 510006China

Graph neural networks have been shown to be very effective in utilizing pairwise relationships across ***,there have been several successful proposals to generalize graph neural networks to hypergraph neural networks to exploit more com-plex *** particular,the hypergraph collaborative networks yield superior results compared to other hypergraph neural net-works for various semi-supervised learning *** collaborative network can provide high quality vertex embeddings and hyperedge embeddings together by formulating them as a joint optimization problem and by using their consistency in reconstructing the given *** this paper,we aim to establish the algorithmic stability of the core layer of the collaborative network and provide generaliz--ation *** analysis sheds light on the design of hypergraph filters in collaborative networks,for instance,how the data and hypergraph filters should be scaled to achieve uniform stability of the learning *** experimental results on real-world datasets are presented to illustrate the theory.

关键词： Hypergraphs vertices hyperedges collaborative networks graph convolutional neural networks(CNNs) stability generalization guarantees

Single-pilot operations in commercial flight:Effects on neural activity and visual behaviour under abnormalities and emergencies

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 Aeronautics 2024年第8期37卷 277-292页

作者： Qinbiao LI Chun-Hsien CHEN kam k.H.ng Xin YUAN Cho Yin YIU Human factors and Ergonomics Laboratory Department of Aeronautical and Aviation EngineeringThe Hong Kong Polytechnic UniversityHong Kong Special Administrative Region 100872China School of Mechanical&Aerospace Engineering Nanyang Technological UniversitySingapore 639798Singapore

With cutting-edge technologies and considering airline human-resource-saving,a single pilot in commercial jets could be technically *** changes in captains’natural behaviours are initially required to comprehend the specific safe human performance envelope for safeguarding single-pilot flight,particularly in high-risk *** paper investigates how captains’performance transforms for fixing emergencies when operating from Dual-Pilot Operations(DPO)to Single-Pilot Operations(SPO)through a physiological-based *** pilots flew an emergency-included flight with/without first officers’*** neural activities and scanning behaviours were recorded using a 32-channel Electroencephalogram(EEG)and glasses-based eye tracker,with the observation and post-experiment questionnaires to evaluate the flight operations and pilots’*** alone,there was a significantly increased cortical activity in h and b waves over the frontal,parietal,and temporal lobes during the more complicated emergencies,and pilots focused less on the primary flight display while spending significantly more time scanning the other *** physiological fluctuating patterns associated with risky operations in SPO were highlighted by cross-correlating multimodal *** experimental-based noteworthy insights may wish to inform commercial SPO measures to lessen the persistent physiological fluctuation,assisting airlines in creating SPO-oriented intelligent flight systems to give captains adequate support for assuring safer air transportation.

关键词： Aviation engineering Single pilot operations Behaviour changes Eye tracker Electroencephalogram

Jetting-based bioprinting:process,dispense physics,and applications

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

Bio-Design and Manufacturing 2024年第5期7卷 771-799页

作者： Wei Long ng Viktor Shkolnikov Singapore Centre for 3D Printing(SC3DP) School of Mechanical and Aerospace EngineeringNanyang Technological University(NTU)Singapore 639798Singapore HP Inc. Palo AltoCA 94304USA

Jetting-based bioprinting facilitates contactless drop-on-demand deposition of subnanoliter droplets at well-defined positions to control the spatial arrangement of cells,growth factors,drugs,and biomaterials in a highly automated layer-by-layer fabrication *** to its immense versatility,jetting-based bioprinting has been used for various applications,including tissue engineering and regenerative medicine,wound healing,and drug development.A lack of in-depth understanding exists in the processes that occur during jetting-based *** review paper will comprehensively discuss the physical considerations for bioinks and printing conditions used in jetting-based *** first present an overview of different jetting-based bioprinting techniques such as inkjet bioprinting,laser-induced forward transfer bioprinting,electrohydrodynamic jet bioprinting,acoustic bioprinting and microvalve ***,we provide an in-depth discussion of various considerations for bioink formulation relating to cell deposition,print chamber design,droplet formation and droplet ***,we highlight recent accomplishments in jetting-based *** present the advantages and challenges of each method,discuss considerations relating to cell viability and protein stability,and conclude by providing insights into future directions of jetting-based bioprinting.

关键词： 3D bioprinting Biofabrication Jetting-based Dispense physics Machine learning

Dysfunction of synaptic endocytic trafficking in Parkinson's disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第12期19卷 2649-2660页

作者： Xin Yi ng Mian Cao Programme in Neuroscience and Behavioural Disorders Duke-NUS Medical SchoolSingaporeSingapore Department of Physiology National University of SingaporeSingaporeSingapore

Parkinson's disease is characterized by the selective degeneration of dopamine neurons in the nigrostriatal pathway and dopamine deficiency in the *** precise reasons behind the specific degeneration of these dopamine neurons remain largely *** investigations have identified over 20 causative PARk genes and 90 genomic risk loci associated with both familial and sporadic Parkinson's ***,several of these genes are linked to the synaptic vesicle recycling process,particularly the clathrinmediated endocytosis *** suggests that impaired synaptic vesicle recycling might represent an early feature of Parkinson's disease,followed by axonal degeneration and the eventual loss of dopamine cell bodies in the midbrain via a"dying back"***,several new animal and cellular models with Parkinson's disease-linked mutations affecting the endocytic pathway have been created and extensively *** models faithfully recapitulate certain Parkinson's disease-like features at the animal,circuit,and cellular levels,and exhibit defects in synaptic membrane trafficking,further supporting the findings from human genetics and clinical *** this review,we will first summarize the cellular and molecular findings from the models of two Parkinson's disease-linked clathrin uncoating proteins:auxilin(DNAJC6/PARk19)and synaptojanin 1(SYNJ1/PARk20).The mouse models carrying these two PARk gene mutations phenocopy each other with specific dopamine terminal pathology and display a potent synergistic ***,we will delve into the involvement of several clathrin-mediated endocytosis-related proteins(GAk,endophilin A1,SAC2/INPP5 f,synaptotagmin-11),identified as Parkinson's disease risk factors through genome-wide association studies,in Parkinson's disease *** will also explore the direct or indirect roles of some common Parkinson's disease-linked proteins(alpha-synuclein(PARk1/4),Parkin(PARk2),and LRRk2(PARk

关键词： autophagy auxilin/PARk19 clathrin-mediated endocytosis dopamine neurons neurodegeneration nigrostriatal pathway Parkinson's disease synaptic vesicle recycling synaptojanin1/PARk20

Compression of Battery X-Ray Tomography Data with Machine Learning

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2024年第9期41卷 153-158页

作者： Zipei Yan Qiyu Wang Xiqian Yu Jizhou Li Michael k.-P.ng Department of Electronic Engineering The Chinese University of Hong KongHong KongChina Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of SciencesBeijing 100190China Huairou Division Institute of PhysicsChinese Academy of SciencesBeijing 101400China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China CUHk Shenzhen Research Institute Shenzhen 518057China Department of Mathematics Hong Kong Baptist UniversityHong KongChina

With the increasing demand for high-resolution x-ray tomography in battery characterization,the challenges of storing,transmitting,and analyzing substantial imaging data necessitate more efficient *** data compression methods struggle to balance reduction ratio and image quality,often failing to preserve critical details for accurate *** study proposes a machine learning-assisted compression method tailored for battery x-ray imaging *** physics-informed representation learning,our approach significantly reduces file sizes without sacrificing meaningful *** validate the method on typical battery materials and different x-ray imaging techniques,demonstrating its effectiveness in preserving structural and chemical *** results show an up-to-95 compression ratio while maintaining high fidelity in the projection and reconstructed *** proposed framework provides a promising solution for managing large-scale battery x-ray imaging datasets,facilitating significant advancements in battery research and development.

关键词： battery Battery details

Perspectives in human brain plasticity sparked by glioma invasion:from intraoperative(re)mappings to neural reconfigurations

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第5期19卷 947-948页

作者： Sam ng Hugues Duffau Guillaume Herbet Department of Neurosurgery Gui de Chauliac HospitalMontpellier University Medical CenterMontpellierFrance Institute of functional Genomics University of MontpellierCNRSINSERMMontpellierFrance Praxiling Laboratory UMR5267CNRSPaul Valéry-Montpellier 3 UniversityMontpellierFrance

Exploring the aptitude of the human brain to compensate functional consequences of a lesion damaging its structural architecture is a key challenge to improve patient care in various neurological diseases,to optimize neuroscientifically-informed strategies of postlesional rehabilitation,and ultimately to develop innovative neuro-regenerative *** term‘plasticity’,initially referring to the intrinsic propensity of neurons to modulate their synaptic transmission in a learning situation,was progressively transposed to brain injury research and clinical ***,in the event of brain damage,adaptive mechanisms of compensation allow a partial reshaping of the structure and activities of the central nervous system,thus permitting to some extent the maintenance of brain functions.

关键词： plasticity figuration consequences