检索结果-南通市图书馆

Self-management of coronary heart disease in older patients after elective percutaneous transluminal coronary angioplasty

在线全文

学校读者我要写书评

暂无评论

journal of Geriatric Cardiology 2016年第5期13卷 393-400页

作者： Susan Dawkes Graeme D Smith Lawrie elliott Robert Raeside jayne H Donaldson School of Nursing Midwifery and Social Care Edinburgh Napier University Scotland United Kingdom Department of Nursing and Community Health Glasgow Caledonian University Scotland United Kingdom Employment Research Institute Edinburgh Napier University Scotland United Kingdom School of Health Sciences University of Stirling Scotland United Kingdom

Objective To explore how older patients self-manage their coronary heart disease （CHD） aider undergoing elective percutaneous transluminal coronary angioplasty （PTCA）. Methods This mixed methods study used a sequential, explanatory design and recruited a convenience sample of patients （n = 93） approximately three months after elective PTCA. The study was conducted in two phases. Quantitative data collected in Phase 1 by means of a self-administered survey were subject to univariate and bivariate analysis. Phase 1 findings in- formed the purposive samplhag for Phase 2 where ten participants were selected from the original sample for an in-depth interview. Qualita- tive data were analysed using thematic analysis. This paper will primarily report the findings from a sub-group of older participants （n = 47） classified as 65 years of age or older. Results 78.7% （n = 37） of participants indicated that they would manage recurring angina symptoms by taking glyceryl trinitrate and 34% （n = 16） thought that resting would help. Regardless of the duration or severity of the symptoms 40.5% （n = 19） would call their general practitioner or an emergency ambulance for assistance during any recurrence of angina symptoms. Older participants weighed less （P = 0.02） and smoked less （P = 0.01） than their younger counterparts in the study. Age did not seem to affect PTCA patients＇ likelihood of altering dietary factors such as fruit, vegetable and saturated fat consumption （P = 0.237）. Conclusions The findings suggest that older people in the study were less likely to know how to correctly manage any recurring angina symptoms than their younger counterparts but they had fewer risk factors for CHD. Age was not a factor that influenced participants＇ likelihood to alter lifestyle factors.

关键词： Angina pectoris Coronary disease Percutaneous transluminal coronary angioplasty Self-management

Gas Line Pressure Fluctuation Analysis of a Gas-Liquid Reactor

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 Thermal Science 2005年第3期14卷 267-271页

作者： j.j.j. CHEN j.C. ZHAO Chemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand ProfessorChemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand

To ensure efficient operation of metallurgical gas-liquid reactors, the gas bubbles must be uniformly distributed. For high temperature metallurgical reactors, it is impractical and unsafe to carry out visual observations. An air-water model was used to study the relationship between the bubble flow patterns and the pressure fluctuation signals. The fluctuation signals captured in the time domain were transformed into the frequency domain. Various parameters obtained from the transformed data were analysed for their suitability for delineating the bubble flow patterns observed. These parameters and the flow patterns were found to be well-correlated using the gas flow number.

关键词： gas liquid reactors bubble distribution signal analysis

Computational study on influence of RF shielding box on inductance of coil

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2019年第6期21卷 23-28页

作者： S j KIM j j LEE Y S LEE j H KIM S j YOU Applied Physics lab for PLasma Engineering(APPLE) Department of Physics Chungnam National University Daejeon 34134 Republic of Korea Korea Research Institute of Standards and Science(KRISS) Daejeon 34113 Republic of Korea

Despite the fact that a radio frequency (RF) shielding box affects a coil inductance used in matching network,RF engineers have used a coil inductance measured in open space on designing matching networks since it is difficult to precisely measure the coil inductance within the RF shielding *** this work,we investigate the influences of the RF shielding box on the coil inductance via a 3D full electromagnetic wave *** results shows that the coil inductance decreases from-6.0% to-11.9% compared with its ideal inductance depending on coil positions within the RF shielding *** inductive and capacitive coupling between the coil and surfaces of the RF shielding box contribute to the reduction of the coil *** expect that these results would be useful for those who design RF matching networks.

关键词： 3D full EM wave simulation RF matching component RF shield inductive and capacitive coupling

在线全文

学校读者我要写书评

暂无评论

PCCP爆管预警的光纤声监测系统

水利水电技术 2009年第3期40卷 68-70,77页

作者：王五平 jack elliott 宋人心傅翔南京水利科学研究院江苏南京210029 加拿大Pure Technologies公司

介绍了用于PCCP爆管预警的光纤声监测系统组成及原理。对比试验及工程应用表明,该系统具有精度高、监测距离长、性能长期可靠等优点,可推广应用于长距离PCCP输水工程的实时监测,对爆管事故进行预警。

关键词： PCCP 爆管预警光纤声监测系统实时监测断丝

Formation of High-quality Advanced High-k Oxide Layers at Low Temperature by Excimer UV Lamp-assisted Photo-CVD and Sol-gel Processing

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2004年第4期20卷 396-402页

作者： YU j. j. Electronic & Electrical Engineering University College London

We have successfully demonstrated that high quality and high dielectric constant layers can be fabricated by low temperature photo-induced or -assisted processing. Ta_2O_5 and ZrO_2 have been deposited at t<400 ℃ by means of a UV photo-CVD technique and HfO_2 by photo-assisted sol-gel processing with the aid of excimer lamps. The UV annealing of as-grown layers was found to significantly improve their electrical properties. Low leakage current densities on the order of 10 -8 A/cm 2 at 1 MV/cm for deposited ultrathin Ta_2O_5 films and ca.10 -6 A/cm 2 for the photo-CVD ZrO_2 layers and photo-irradiated sol-gel HfO_2 layers have been readily achieved. The improvement in the leakage properties of these layers is attributed to the UV-generated active oxygen species O( 1D) which strongly oxidize any suboxides to form more stoichiometric oxides on removing certain defects, oxygen vacancies and impurities present in the as-prepared layers. The photo-CVD Ta_2O_5 films deposited across 10.16-cm Si wafers exhibit a high thickness uniformity with a variation of less than \{±2.0%\} being obtained for ultrathin ca.10 nm thick films. The lamp technology can in principle be extended to larger area wafers, providing a promising low temperature route to the fabrication of a range of high quality thin films for future ULSI technology.

关键词： Excimer lamp High-kdielectrics Thin film Chemical vapour deposition(CVD) Sol-gel processing

Indian plate paleogeography, subduction and horizontal underthrusting below Tibet: paradoxes, controversies and opportunities

在线全文

学校读者我要写书评

暂无评论

National Science Review 2022年第8期9卷 175-193页

作者： Douwe j.j.van Hinsbergen Department of Earth Sciences Utrecht University

The India–Asia collision zone is the archetype to calibrate geological responses to continent–continent collision, but hosts a paradox: there is no orogen-wide geological record of oceanic subduction after initial collision around 60–55 Ma, yet thousands of kilometers of post-collisional subduction occurred before the arrival of unsubductable continental lithosphere that currently horizontally underlies Tibet. Kinematically restoring incipient horizontal underthrusting accurately predicts geologically estimated diachronous slab break-off, unlocking the Miocene of Himalaya–Tibet as a natural laboratory for unsubductable lithosphere convergence. Additionally, three endmember paleogeographic scenarios exist with different predictions for the nature of post-collisional subducted lithosphere but each is defended and challenged based on similar data types. This paper attempts at breaking through this impasse by identifying how the three paleogeographic scenarios each challenge paradigms in geodynamics, orogenesis, magmatism or paleogeographic reconstruction and identify opportunities for methodological advances in paleomagnetism, sediment provenance analysis, and seismology to conclusively constrain Greater Indian paleogeography.

关键词： collision orogenesis subduction reconstruction Himalaya Tibet

ROOT EXUDATES FROM CANOLA EXHIBIT BIOLOGICAL NITRIFICATION INHIBITION AND ARE EFFECTIVE IN INHIBITING AMMONIA OXIDATION IN SOIL

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Agricultural Science and Engineering 2022年第2期9卷 177-186页

作者： Cathryn A.O'SULLIVAN elliott G.DUNCAN Margaret M.ROPER Alan E.RICHARDSON john A.KIRKEGAARD Mark B.PEOPLES CSIRO Agriculture&Food 306 Carmody RdSt LuciaQld 4067Australia CSIRO Agriculture&Food Private Bag 5WembleyWA 6913Australia MBS Environmental 4 Cook StreetWest PerthWA 6005Australia CSIRO Agriculture&Food GPO Box 1700CanberraACT 2601Australia

A range of plant species produce root exudates that inhibit ammonia-oxidizing *** biological nitrification inhibition(BNI)capacity can decrease N loss and increase N uptake from the *** study sought evidence for the existence and magnitude of BNI capacity in canola(Brassica napus).Seedlings of three canola cultivars,Brachiaria humidicola(BNI positive)and wheat(Triticum aestivum)were grown in a hydroponic *** exudates were collected and their inhibition of the ammonia oxidizing bacterium,Nitrosospira multiformis,was *** pot experiments were used to test the inhibition of native nitrifying communities in *** exudates from canola significantly reduced nitrification rates of both *** cultures and native soil microbial *** level of nitrification inhibition across the three cultivars was similar to the well-studied high-BNI species *** capacity of canola may have implications for the N dynamics in farming systems and the N uptake efficiency of crops in rotational farming *** reducing nitrification rates canola crops may decrease N losses,increase plant N uptake and encourage microbial N immobilization and subsequently increase the pool of organic N that is available for mineralization during the following cereal crops.

关键词： ammonia oxidizing microorganisms biological nitrification inhibition farming rotations nitrogen cycling nitrogen use efficiency

在线全文

学校读者我要写书评

暂无评论

激光上釉

热处理技术与装备 1983年第2期 7-17页

作者： j.K.Tien j.F.elliott 何肇基北京钢铁学院

近来,在改善金属材料的表面性能方面,利用能束和离子束加工的方法正引起广泛的兴趣,激光和电子束的表面熔化技术能够形成急速凝固的表面组织。同时利用粉、丝、带形式的合金有控制地喂进溶区中可以造成表面合金化。利用离子植入或者离... 详细信息

近来,在改善金属材料的表面性能方面,利用能束和离子束加工的方法正引起广泛的兴趣,激光和电子束的表面熔化技术能够形成急速凝固的表面组织。同时利用粉、丝、带形式的合金有控制地喂进溶区中可以造成表面合金化。利用离子植入或者离子束混合技术能使一种或多种合金元素在表面层达到高的浓度。这样的处理还包括为恢复晶体的完整性同时又保持合金元素富集的优点而进行的激光退火。本文将从原理和应用远景两个方面来概括这些技术的发展,主要针

关键词：激光上釉温度梯度凝固速度冷却速度熔池深度功率密度树枝状晶

某一具体药物经证明的疗效能否就认为此疗效为同一类药物所共有?

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

岭南心血管病杂志 2004年第5期10卷 385-386页

作者： elliott M Antman james j Ferguson 余国膺