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

城乡地区新生儿维生素K营养状况的比较研究

中国儿童保健杂志 2001年第2期9卷 122-123页

作者：张会丰卢飞曹文珍谷素兰刘钧秋王振荣屈平刘士琨李根山 julia Harvey martin j.shearer 河北医科大学第二医院儿科河北石家庄050000

新生儿、小婴儿发生出血的危险程度远远高于其他年龄阶段。维生素K是维持机体正常凝血功能的营养素，“机体的凝血功能状况”正逐渐被“机体的维生素K营养状况”所替代。凝血酶原前体蛋白(PIVKA-Ⅱ)是生化水平反映机体维生素K营养状况... 详细信息

新生儿、小婴儿发生出血的危险程度远远高于其他年龄阶段。维生素K是维持机体正常凝血功能的营养素，“机体的凝血功能状况”正逐渐被“机体的维生素K营养状况”所替代。凝血酶原前体蛋白(PIVKA-Ⅱ)是生化水平反映机体维生素K营养状况指标，它能敏感地反映机体是否有亚临床维生素K缺乏[1]。我们使用ELISA法对石家庄市及其周围县市的新生儿脐血进行了凝血酶原前体蛋白定量检测，以比较城乡新生儿出生时的维生素K养状况。

关键词：凝血酶原前体蛋白维生素K缺乏新生儿营养

除了缺乏以外:增加维生素K摄入量对骨和血管健康的潜在益处

在线全文

学校读者我要写书评

暂无评论

除了缺乏以外:增加维生素K摄入量对骨和血管健康的潜在益处

A Tutorial Review of the Solar Power Curve: Regressions, Model Chains, and Their Hybridization and Probabilistic Extensions

作者： Cees Vermeer martin j.shearer Armin Zittermann Caroline Bolton-Smith Pawel Szulc Stephen Hodges Paul Walter Walter Rambeck Elisabeth StLcklin·Peter Weber 王劲 Maastricht大学生化系 St Thomas医院德国波恩大学 MRC Human Nutrition Research

维生素K以其合成许多血凝因子的作用而著名。最近几年发现维生素K依赖性蛋白对骨和血管的健康有极其重要作用。膳食维生素K推荐摄入量是以肝脏合成血凝因子需要量为基础制定的。积累的证据提示用于其他功能的需要量比用于血凝的需要量... 详细信息

维生素K以其合成许多血凝因子的作用而著名。最近几年发现维生素K依赖性蛋白对骨和血管的健康有极其重要作用。膳食维生素K推荐摄入量是以肝脏合成血凝因子需要量为基础制定的。积累的证据提示用于其他功能的需要量比用于血凝的需要量可能要高。本文是一个封闭专题讨论会的结果,会上许多欧洲维生素K专家回顾了现有的资料并阐明了他们在膳食维生素K推荐摄入量和使用含维生素K补充剂的立场。

关键词：维生素K γ-羧基谷氨酸骨质疏松症骨矿物质密度心血管病

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

Advances in Atmospheric Sciences 2024年第6期41卷 1023-1067页

作者： Dazhi YANG Xiang’ao XIA martin jános MAYER School of Electrical Engineering and Automation Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Key Laboratory for Middle Atmosphere and Global Environment Observation(LAGEO) Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China Department of Energy Engineering Faculty of Mechanical EngineeringBudapest University of Technology and EconomicsMűegyetem rkp.3Budapest H-1111Hungary

Owing to the persisting hype in pushing toward global carbon neutrality,the study scope of atmospheric science is rapidly *** numerous trending topics,energy meteorology has been attracting the most attention *** essential skill of solar energy meteorologists is solar power curve modeling,which seeks to map irradiance and auxiliary weather variables to solar power,by statistical and/or physical *** this regard,this tutorial review aims to deliver a complete overview of those fundamental scientific and engineering principles pertaining to the solar power *** power curves can be modeled in two primary ways,one of regression and the other of model *** classes of modeling approaches,alongside their hybridization and probabilistic extensions,which allow accuracy improvement and uncertainty quantification,are scrutinized and contrasted thoroughly in this review.

关键词： review energy meteorology solar power curve model chain solar power prediction

除了缺乏以外:增加维生素K摄入量对骨和血管健康的潜在益处

在线全文

学校读者我要写书评

暂无评论

营养健康新观察 2009年第1期 14-19页

作者： Cees Vermeer martin j.shearer Armin Zittermann Caroline Bolton-Smith Pawel Szulc Stephen Hodges Paul Walter Walter Rambeck Elisabeth Stcklin.Peter Weber 王劲 Maastricht大学生化系 St.Thomas医院德国波恩大学 MRC Human Nutrition Research INSERM S.Hodges大学伦敦学院巴塞尔大学慕尼黑大学 Roche维生素有限公司

关键词：维生素K γ-羧基谷氨酸骨质疏松症骨矿物质密度心血管病

Sustainable plasticulture in Chinese agriculture: a review of challenges and routes to achieving long-term food and ecosecurity

在线全文

学校读者我要写书评

暂无评论

Frontiers of Agricultural Science and Engineering 2024年第1期11卷 155-168页

作者： Samuel j.CUSWORTH William j.DAVIES martin R.MCAINSH Carly j.STEVENS Weilu WANG Lancaster Environment Centre Lancaster UniversityLancasterLA14YQUK The Institutes of Agricultural Science and Technology Development Yangzhou UniversityYangzhou 225009China

Plastic pollution is global concern, affecting most aspects of global food production systems. Plasticulture, a practice used in agriculture to improve crop quality and quantity, among other factors, is a significant source of plastic pollution. This review examines the extent of plasticulture in China, the implications of the practice across decades of use and the legislative instruments used to resolve those issues. It briefly assesses the effectiveness of these policies and proposes possible future innovations to promote increases in long-term food and eco-security, where sustainable plasticulture is a key agent for change. While plasticulture has increased agricultural productivity in growth-limiting conditions, plastic pollution in agricultural soils has become acute in China. Consequently, plastic pollution is having deleterious effects on soil health and in turn, crop productivity in China. Plastic pollution in agriculture is a multifaceted issue and so proposed solutions should be informed by this complexity. Current measures do not reflect a holistic approach to solving this socioecological challenge and adopt a top-down approach, with little or no supportive mechanisms. Future recommendations need to consider the particular set of conditions that influence the production, use and end-of-life management of agriplastics,specific to the environmental, economic and social conditions in each location.

关键词： Circular plastics economy crop production food security plastic pollution sustainable plasticulture

Pyramid-Textured Antireflective Silicon Surface In Graphene Oxide/Single-Wall Carbon Nanotube–Silicon Heterojunction Solar Cells

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2018年第4期1卷 232-240页

作者： LePing Yu Munkhbayar Batmunkh Mahnaz Dadkhah Cameron j.shearer joseph G.Shapter Flinders Institute for Nanoscale Science and Technology College of Science and EngineeringFlinders UniversityBedford ParkSA 5042Australia School of Chemistry and Chemical EngineeringShanghai University of Engineering ScienceShanghai201620PR China Flinders Institute for Nanoscale Science and Technology College of Science and EngineeringFlinders UniversityBedford ParkSA 5042Australia Australian Institute for Bioengineering and Nanotechnology University of QueenslandSt.Lucia Qld 4072Australia Department of Chemistry The University of AdelaideAdelaideSA 5005Australia

Antireflection layers are commonly used in photovoltaics to increase light absorption and therefore increase maximum ***,pyramid structures are created on Si surfaces with alkaline solution *** extent of pyramid cover... 详细信息

关键词： antireflection treatment carbon nanotubes solar cells

A multi-shot target wheel assembly for high-repetition-rate, laser-driven proton acceleration

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

High Power Laser Science and Engineering 2024年第2期12卷 87-94页

作者： j.Penas A.Bembibre D.Cortina-Gil L.martin A.Reija C.Ruiz M.Seimetz A.Alejo j.Benlliure Instituto Galego de Fisica de Altas Enerxias Universidade de Santiago de CompostelaSantiago de CompostelaSpain Laboratorio Laser de Aceleracion y Aplicaciones RIAIDTUniversidade de Santiago de CompostelaSantiago de CompostelaSpain Instituto Universitario de Física Fundamental y Matematicas y Dpto.de Didactica de la Matematica y de las Ciencias Experimentales Universidad de SalamancaSalamancaSpain Instituto de Instrumentación para Imagen Molecular(I3M) CSIC-Universitat Politecnica de ValenciaValenciaSpain

A multi-shot target assembly and automatic alignment procedure for laser–plasma proton acceleration at high repetition rate are *** assembly is based on a multi-target rotating wheel capable of hosting more than 5000 targets,mounted on a 3D motorized stage to allow rapid replenishment and alignment of the target material between laser *** automatic alignment procedure consists of a detailed mapping of the impact positions at the target surface prior to the irradiation that ensures stable operation of the target,which alongside the purpose-built design of the target wheel,enables operation at rates up to 10 *** and continuous laser-driven proton acceleration at 10 Hz is demonstrated,with observed cut-off energy stability about 15%.

关键词： high repetition rate laser-plasma acceleration multi-shot operation proton source target assembly

Enhancing 3D Reconstruction Accuracy of FIB Tomography Data Using Multi‑voltage Images and Multimodal Machine Learning

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

Nanomanufacturing and Metrology 2024年第1期7卷 48-60页

作者： Trushal Sardhara Alexander Shkurmanov Yong Li Lukas Riedel Shan Shi Christian j.Cyron Roland C.Aydin martin Ritter Institute for Continuum and Material Mechanics Hamburg University of TechnologyHamburgGermany Electron Microscopy Unit Hamburg University of TechnologyHamburgGermany Institute of Materials Physics and Technology Hamburg University of TechnologyHamburgGermany Institute of Materials Mechanics Helmholtz-Zentrum HereonGeesthachtGermany Research Group of Integrated Metallic Nanomaterials Systems Hamburg University of TechnologyHamburgGermany Institute of Material Systems Modeling Helmholtz-Zentrum HereonGeesthachtGermany

FIB-SEM tomography is a powerful technique that integrates a focused ion beam(FIB)and a scanning electron microscope(SEM)to capture high-resolution imaging data of *** approach involves collecting in-plane SEM imagesand using FIB to remove material layers for imaging subsequent planes,thereby producing image ***,theseimage stacks in FIB-SEM tomography are subject to the shine-through effect,which makes structures visible from theposterior regions of the current *** artifact introduces an ambiguity between image intensity and structures in thecurrent plane,making conventional segmentation methods such as thresholding or the k-means algorithm *** study,we propose a multimodal machine learning approach that combines intensity information obtained at differentelectron beam accelerating voltages to improve the three-dimensional(3D)reconstruction of *** treatingthe increased shine-through effect at higher accelerating voltages as a form of additional information,the proposed methodsignificantly improves segmentation accuracy and leads to more precise 3D reconstructions for real FIB tomography data.

关键词： Multimodal machine learning Multi-voltage images FIB-SEM Overdeterministic systems 3D reconstruction FIB tomography

Effects of a school-based karate intervention on academic achievement,psychosocial functioning,and physical fitness:A multi-country cluster randomized controlled trial

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 Sport and Health Science 2024年第1期13卷 90-98页

作者： Tania Pinto-Escalona Erica Gobbi Pedro L.Valenzuela Simon j.Bennett Pierluigi Aschieri Manuel martin-Loeches Antonio Paoli Oscar martinez-de-Quel Faculty of Education Complutense University of MadridMadrid 28040Spain Department of Biomolecular Sciences University of Urbino“Carlo Bo”Urbino 61029Italy Department of Systems Biology University of AlcaláMadrid 28805Spain Research Institute for Sport and Exercise Sciences Faculty of ScienceLiverpool John Moores UniversityLiverpoolL33AFUK Italian judo WrestlingKarate and Martial Arts FederationRome 00122Italy Psychobiology&Methods for the Behavioural Sciences Department Complutense University of MadridMadrid 28040Spain Department of Biomedical Sciences University of PaduaPadua 35122Italy

Purpose:To examine the effects of a school-based karate intervention on academic achievement,psychosocial functioning,and physical fitness in children aged 7-8 ***:Twenty schools in 5 different European countries(2 second-grade classrooms per school)participated in a cluster randomized controlled trial(Sport at School trial).Participants were assigned to either a control group,which continued with their habitual physical education lessons,or to an intervention group,which replaced these lessons with a 1-year karate intervention(Karate Mind and Movement program).A total of 721 children(344 girls and 377 boys,7.4±0.5 years old,mean±SD)completed the study,of which 333 and 388 were assigned to the control group and intervention group,*** included academic performance(average grade),psychosocial functioning(Strengths and Difficulties Questionnaire for parents),and different markers of physical fitness(cardiorespiratory fitness,balance,and flexibility).Results:The intervention provided small but significant benefits compared to the control group for academic achievement(d=0.16;p=0.003),conduct problems(d=-0.28;p=0.003),cardiorespiratory fitness(d=0.36;p0.05).Conclusion:A 1-year school-based karate intervention was effective in improving academic achievement,conduct problems,and physical fitness in primary school *** results support the inclusion of karate during physical education lessons.

关键词： Academic performance Cardiorespiratory fitness Conduct problems Karate Physical fitness