检索结果-南通市图书馆

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

练太极拳时心血管呼吸和代谢功能的改变

中国康复医学杂志 1987年第6期 241-244页

作者：卓大宏 roy j.Shephard Michael j.Plyley Glen M.Davis 中山医科大学加拿大多伦多大学加拿大多伦多大学加拿大多伦多大学

有关太极拳代谢及生理强度的研究报道极少见。本研究旨在通过实验以了解太极拳的生理强度。受试者为11名健康男青年,平均年龄28.4岁。练习太极拳运动史平均5年,动作娴熟。观察受试者在练习杨家老式太极拳时摄氧量和有关代谢指标,以及心... 详细信息

有关太极拳代谢及生理强度的研究报道极少见。本研究旨在通过实验以了解太极拳的生理强度。受试者为11名健康男青年,平均年龄28.4岁。练习太极拳运动史平均5年,动作娴熟。观察受试者在练习杨家老式太极拳时摄氧量和有关代谢指标,以及心率、血压的改变。用自动呼吸气体分析装置(jaeger Ergcoxyscreen)及心电遥测装置测量打一套太极拳(历时17～25分钟,平均22分钟)时上述指标的变化。老式太极拳平均能量消耗为4.1METS,相当于1.03升/分或14.5毫升/分/公斤体重的摄氧量,运动时平均最高心率为134次/分。这些数值提示老式太极拳可列为柔和运动,其生理强度不超过最大摄氧量的50％。

关键词：太极拳运动平均练习血压受试者简化太极拳心率

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

一种設計数字电路的新方法

计算机研究与发展 1964年第11期 25-29页

作者： Charles K. Wilk roy j. Clites 杨成忠

在数据处理設备和数字計算机中的典型数字电路,特别适宜采用一般的設计技术。本文提出的一种設計方法是,当电源电压、晶体管预先选擇好而负载电流为可变的情况下,可以决定最佳的設計。

关键词：方程式 Ra 方程数字电路容差常数数学集电极电流反相器晶体管半导体三极管

早期大剂量左旋甲状腺素治疗先天性甲状腺功能减退患儿入学时的认知能力和行为

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（儿科学分册） 2005年第4期1卷 39-40页

作者： Simoneau-roy j Marti S. Deal C. Dr. G. Van Vliet 贺莉 Sainte-justine Hospital Endocrinology Service 3175 Cte Sainte-Catherine Montreal Que. H3T 1C5 Canada

目的:为了评价经大剂量左旋甲状腺素早期治疗的先天性甲状腺功能减退(CH)患儿入学时的认知能力和行为。试验设计:18例先天性甲状腺功能减退的患儿(CH:9例重度和9例中度,重、中度的诊断是依据膝盖骨的骨骺分别<或≥0.05cm2),从中位年龄14... 详细信息

目的:为了评价经大剂量左旋甲状腺素早期治疗的先天性甲状腺功能减退(CH)患儿入学时的认知能力和行为。试验设计:18例先天性甲状腺功能减退的患儿(CH:9例重度和9例中度,重、中度的诊断是依据膝盖骨的骨骺分别<或≥0.05cm2),从中位年龄14d起,接受中位剂量12.0μg/(kg·d)的左旋甲状腺素治疗。

关键词：甲状腺功能减退左旋甲状腺素筛查量表时用麦卡锡 hypothyroidism 试验设计 median 无显著性差异 moderate

在线全文

学校读者我要写书评

暂无评论

嘉梅兰猪品系主效基因检测

上海农业学报 1999年第4期15卷 47-50页

作者：张似青 LeroyP Naveauj BidaneljP 上海市农业科学院畜牧兽医研究所上海201106 法国农业科学院数量遗传应用研究站法国版纳兰猪育种公司

通过对嘉梅兰（Ｔｉａｍｅｓｌａｎ）猪品系的主效基因的探测，得到了该品系的背膘厚和有效乳头数二个性状的主效基因的结果。进一步的分离分析得到背膘厚是由超常脂肪沉积等位隐性基因控制，有效乳头数则由有效乳头数增加的等位显性... 详细信息

通过对嘉梅兰（Ｔｉａｍｅｓｌａｎ）猪品系的主效基因的探测，得到了该品系的背膘厚和有效乳头数二个性状的主效基因的结果。进一步的分离分析得到背膘厚是由超常脂肪沉积等位隐性基因控制，有效乳头数则由有效乳头数增加的等位显性基因控制。

关键词：猪嘉梅兰猪主效基因检测

骨骼肌的11C-L-甲基蛋氨酸PET/CT动态显像:观察蛋白质补充对骨骼肌的影响并与L-[环13C6]苯丙氨酸输注后多次骨骼肌活组织检查结果进行比较

在线全文

学校读者我要写书评

暂无评论

中华核医学与分子影像杂志 2017年第12期37卷 826-827页

作者：唐军 Emily j.Arentson-Lantz Isra H.Saeed Lynda A.Frassetto Umesh Masharani roy j.Harnish Youngho Seo Henry F.VanBrocklin Randall A.Hawkins Carina Mari-Aparici Miguel H.Pampaloni james Slater Douglas Paddon-jones Thomas F.Lang 上海交通大学附属苏州九龙医院核医学科 Department of Radiology and Biomedical Imaging University of CaliforniaSan FranciscoUSA

目的评价骨骼肌蛋白质合成的传统方法是在静脉输注L-[环13C6]苯丙氨酸(13C6-Phe)后做骨骼肌活组织检查,通过多次活组织检查计算蛋白质合成的分数合成率（FSR）。通过对健康老年女性行11C-L-甲基蛋氨酸(11C-MET)PET/CT动态显像,估算进食... 详细信息

目的评价骨骼肌蛋白质合成的传统方法是在静脉输注L-[环13C6]苯丙氨酸(13C6-Phe)后做骨骼肌活组织检查,通过多次活组织检查计算蛋白质合成的分数合成率（FSR）。通过对健康老年女性行11C-L-甲基蛋氨酸(11C-MET)PET/CT动态显像,估算进食后和吸收后的骨骼肌蛋白质合成水平,旨在评价上述2种方法的一致性。方法 13名老年女性[年龄（73±5）岁]禁食后口服25 g乳清蛋白,1 h后行11C-MET PET/CT动态显像,作图分析动态图像,通过计算Patlak系数Ki估算11CMET进入股中肌束的量。间隔2周,在相同条件下口服25 g乳清蛋白,1h后行稳定同位数药物13C6-Phe的输注,并进行股外侧肌活组织检查,计算FSR。结果口服乳清蛋白后的Ki值及FSR[（0.009 5±0.001）/min和（0.083±0.008）%/h]比吸收后的高[（0.007 85±0.001）/min和（0.049±0.006）%/h,P<0.05或P<0.001]。Ki和FSR升高的百分数有显著相关性（r=0.79,P=0.015）。结论 11C-MET PET/CT动态显像可以估算口服蛋白质后的骨骼肌蛋白质合成情况,其结果与传统的有创活组织检查法一致。研究结果表明,11C-MET PET/CT动态显像今后可用于无创地评价骨骼肌蛋白质合成的影响因素。

关键词： PET/CT 人骨骼肌蛋白质合成 FSR

Mathematical modeling of nanoscale MOS capacitance in the presence of depletion and energy quantization in a poly-silicon gate

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 Semiconductors 2010年第11期31卷 5-8页

作者： Amit Chaudhry j.N.roy Institute of Engineering and Technology Panjab University Solar Semiconductor Pvt.Ltd.

A model has been developed to study the effect of depletion and energy quantization at the poly-silicon /oxide interface on the behavior of a nanometer scale n-MOSFET.A model of inversion charge density,including the inversion layer quantization using the variation approach in the substrate,has also been *** the exact calculations of the polygate potential under the depletion and quantization conditions,a C-V model has been developed. All the results have been compared with the numerical models reported in existing literature and they show good agreement.

关键词： BSIM inversion layers MOS devices quantization poly-depletion poly-quantization

Nanoscale strained-Si MOSFET physics and modeling approaches:a review

在线全文

学校读者我要写书评

暂无评论

journal of Semiconductors 2010年第10期31卷 19-23页

作者： Amit Chaudhry j.N.roy Garima joshi University Institute of Engineering and Technology Panjab University Solar Semiconductor Private Limited

An attempt has been made to give a detailed review of strained silicon technology. Various device models have been studied that consider the effect of strain on the devices, and comparisons have been drawn. A review of some modeling issues in strained silicon technology has also been outlined. The review indicates that this technology is very much required in nanoscale MOSFETs due to its several potential benefits, and there is a strong need for an analytical model which describes the complete physics of the strain technology.

关键词： mobility SiGe strained-Si technology CAD

SPICE compatible analytical electron mobility model for biaxial strained-Si-MOSFETs

在线全文

学校读者我要写书评

暂无评论

journal of Semiconductors 2011年第5期32卷 36-41页

作者： Amit Chaudhry j.N.roy S.Sangwan UIET Panjab UniversityChandigarhIndia Solar Semiconductro Pvt.Ltd HyderabadIndia

This paper describes an analytical model for bulk electron mobility in strained-Si layers as a function of strain. Phonon scattering, columbic scattering and surface roughness scattering are included to analyze the full mobility model. Analytical explicit calculations of all of the parameters to accurately estimate the electron mobility have been made. The results predict an increase in the electron mobility with the application of biaxial strain as also predicted from the basic theory of strain physics of metal oxide semiconductor （MOS） devices. The results have also been compared with numerically reported results and show good agreement.

关键词： mobility SiGe strained-Si phonon surface roughness columbic

Effect of calcination temperature on steam reforming activity of Ni-based pyrochlore catalysts

在线全文

学校读者我要写书评

暂无评论

journal of Rare Earths 2020年第7期38卷 711-718,I0002页

作者： Daniel j.Haynes Dushyant Shekhawat David Berry Amitava roy james j.Spivey National Energy Technology Laboratory U.S.Department of Energy3610 Collins Ferry RdMorgantownWV26507 USA Louisiana State University Cain Department of Chemical Engineering3307 Patrick Taylor HallBaton RougeLA70803USA

This work served as the second part of a study evaluating the effect of calcination temperature(700-1000℃) on Ni-based lanthanum zirconate pyrochlore catalysts for methane steam reforming.A previous study(Haynes et ***.2017(43) 16744) provided a thorough characterization of the material properties for the catalysts used here,and this study focuses on the evaluation of catalytic *** activity was assessed by two different experimental studies:the effect of reaction temperature using a temperature programmed surface reaction(TPSR),and the effect of reaction *** results demonstrate a complex interaction between the Ni particles and surface LaOx species under the methane steam reforming ***,the material calcined at the lowest temperature(700℃) possesses the highest activity and selectivity,which is attributed to smaller and more welldispersed Ni particles on the surface,and,more importantly,a lesser degree La enrichment at the *** catalysts were deactivated by steam to NiO under all conditions tested,but at certain low reaction pressure(p=0.23 MPa) conditions the materials calcined at 700-900℃ are able to completely recover equilibrium activity in-situ that is then robust and stable under both low and high reaction pressures(p=1.8 MPa) suggesting the formation of a synergistic relationship between Ni and La for syngas ***,exposure of a fresh material to high reaction pressures leads to a rapid and irreversible loss in both CH4 conversion and syngas selectivity whether in the fresh(no pretreatment),or pretreated(steam,H2 or Ar only at 800℃) form for any *** mechanism for deactivation appears to be due to the presence of LaOx species that become mobile,possibly by the formation of La-OH,and covers the active Ni particles and inhibits sites responsible for the CH4 decomposition.

关键词： Nickel Pyrochlore Methane Steam reforming Catalyst Lanthanum enrichment