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无镇静剂作用下结肠镜检的困难和痛苦预测因素的前瞻性评估

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世界核心医学期刊文摘（胃肠病学分册） 2005年第11期1卷 21-22页

作者： takahashi y. Tanaka H. Kinjo M. Sakumoto K. 赵萌 Division of Gastroenterology.and Endocrinology Department of Medicine Tomishiro Chuo Hospital 25 Ueda Tomishiro Okinawa 901- 0243 JapanDr.

PURPOSE: Colonoscopy.can be painful for patients and difficult for colonoscopists; however, it is hard to predict how painful or difficult the examination will be. This study.was designed to identify.factors that predict pain and difficulty.during sedation-free colonoscopy. METHODS: A total of 848 consecutive sedation-free colonoscopies were evaluated in a prospective manner. Factors were recorded, including patient pain, intubation time, demographic data, history.of abdominal surgery. bowel preparation status, diverticular disease, bowel habits, anxiety.level, and number of previous colonoscopies. These factors were analy.ed to determine their association with pain and difficulty. RESULTS: Almost all colonoscopies (845/848; 99.6 percent) were successful. Univariate analy.es showed that lower body.mass index, y.unger age, female gender, anxiety.level, first time, intubation time, preparation status, previous hy.terectomy. and previous gy.ecologic surgery.were predictors of patient pain, and lower body.mass index, female gender, anxiety.level, preparation status, previous hy.terectomy. previous gy.ecologic surge-ry. and constipation were predictors of difficulty.of intubation. Multivariate logistic regression analy.es revealed that lower body.mass index, y.unger age, intubation time, preparation status, previous hy.terectomy. and antispasmodic agent use were predictors of patient pain, and lower body.mass index, female gender, constipation, preparation status, and previous hy.terectomy.were predictors of difficulty.of intubation. CONCLUSIONS: By.use of intubation time and patient pain, several patient characteristics were identified that may.predict technical difficulty.and pain associated with the procedure. These findings have implications for the practice and teaching of colonoscopy.

关键词：结肠镜检插管时间肠道准备插管困难统计学资料子宫切除肠憩室病腹部手术记录资料因素分析

术前超声评估是检测单侧腹股沟斜疝患儿对侧开放性鞘状突出的有用方法

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世界核心医学期刊文摘（儿科学分册） 2005年第2期1卷 51-52页

作者： Hata S. takahashi y. Nakamura T. 王一飞 Department of Surgery.oy.naka Municipal Hospital OsakaJapan

背景/目的:为了分析超声扫描(US)方法在术前确定对侧开放性鞘状突出(CPPV)中的应用价值,作者对使用US方法检测临床诊断为单侧腹股沟斜疝患儿的CPPV结果进行了调查。

关键词：鞘状突术前超声临床诊断鞘膜积水超声扫描

PGK1基因内含子突变可能通过异常剪接导致复发性肌红蛋白尿

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世界核心医学期刊文摘(神经病学分册) 2006年第10期 50-50页

作者： Shirakawa K. takahashi y. Miy.jima H. 刘凯 First Department of Medicine Hainamatsu University School of Medicine 1- 20- 1 Handayama Hamamatsu 4313192 Japan Dr.

A 33- y.ar- old man with mental retardation and recurrent my.globinuria demonstrated a deficiency.in the phosphogly.erate kinase 1 (PGK1) activity.of his muscles and ery.hrocy.es. His PGK1 gene had intronic G- to- A substitution 5 nucleotides downstream from the normal exon 7 5′ splice site (IVS7 + 5G>A). This novel mutation results in a frame shift due to the insertion of 52 bp of intron 7 in the mature mRNA by.aberrant splicing.

关键词：复发性 PGK1 异常剪接内含子基因

房颤消融术中采用新式解剖导航系统可减少射线照射并缩短手术时间

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世界核心医学期刊文摘(心脏病学分册) 2006年第2期 49-49页

作者： Rotter M. takahashi y. Sanders P. 杜媛 Hpital Cardiologique du Haut-Lé vê que Université Victor Segalen Bordeaux 2 Bordeaux France

Aims: Catheter ablation of atrial fibrillation(AF) is centred on pulmonary.vein(PV) ablation with or without additional atrial substrate modification. These procedures may.be prolonged with significant fluoroscopy.exposure. This study.evaluates a new non-fluoroscopic navigation sy.tem during ablation of AF. Methods and results: Seventy.two patients undergoing catheter ablation of sy.ptomatic drug refractory.AF were prospectively.randomized to ablation with(n=35; study.group) or without(n=37; control group) non-fluoroscopic navigation. PV isolation was performed in all patients. In patients with persistent or inducible sustained AF after PV isolation linear ablation was performed by.joining the superior PVs. PV isolation was achieved in all patients; fluoroscopy.15.4± 3.4 vs. 21.3± 6.4 min; Py.reduced in the study.group. Linear block was achieved in 37 of the 39 patients; with a significant reduction in fluoroscopy.5.6± 2.2 vs. 9.9± 4.8 min; P=0.003) and procedural(14.7± 5.5 vs. 26.6± 16.9 min; P=0.007) durations in the study.group. After a follow-up of 6.9± 2.9 months(range 3-10), 26(74% ) patients in the non-fluoroscopic navigation group and 29(78% ) patients in the control group were arrhy.hmia-free after the first procedure. Conclusion: This prospectively.randomized study.demonstrates significant reduction of fluoroscopy.exposure and procedural duration using supplementary.non-fluoroscopic imaging sy.tem for AF ablation.

关键词：房颤心房纤颤手术时间消融术导航系统

Effect of Oxy.en and Hy.rogen on Electron Irradiated Defects of Si Single Cry.tal

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Rare Metals 1989年第1期9卷 28-31页

作者： Gao, y.zun takahashi, H. Sato, y. Takey.ma, T. Nagasaki, R. General Research Inst for Non-ferrous Metals China

CZ-Si and FZ-Si single cry.tal specimens were irradiated by.electron beam with energy.of 1MV in HVEM at temperatures between 298K and 773K. It was found that irradiated defects were easier to produce in Si single cry.tal containing oxy.en than in Si containing hy.rogen. The defects had a larger density.and shorter incubation time in Si containing oxy.en. The bar-like defects, stacking faults and loops were along 110 direction. Bar-like defects and stacking faults were Burgers vector 116 direction ty.e and the stacking faults were on the (113) plane.

关键词： Semiconductor Materials Defects

Site-Pairing of Electron in Doped C_(60)

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Chinese Phy.ics Letters 1995年第8期12卷 453-456页

作者： ZHANG Guoping FU Rongtang SUN Xin y.takahashi T.D.Lee Laboratory.and Department of Phy.ics Fudan UniversityShanghai 200433 National Laboratory.of Infrared Phy.ics Shanghai 200083 Department of Material Science Fudan UniversityShanghai 200433 Department of Phy.ics University of AlbertaEdmonton T6G 2J1Canada 不详

Going bey.nd both a simple perturbative theory.and Hartree-Fock treatment,the Gutzwiller variational scheme is employ.d to clarify.the possibility.of electron site-pairing in doped C_(60).It is shown that this pairing can be induced by.electron-phonon interaction rather than electron-electron *** results are supported by.EPR experiments.

关键词： interaction. Electron Hartree

Estimation of water requirement per unit carbon fixed by.Eucaly.tus camaldulensis in semi-arid land of Western Australia

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Science China Earth Sciences 2002年第z1期45卷 142-147页

作者： T. Kojima y. Tanaka S. Katoh K. Tahara N. takahashi K. y.mada Department of Applied Chemistry Fac. of Eng. Seikei University Tokyo 180-8633 Japan Japan Science and Technology.Corporation Tokyo 110-0015 Japan Deptartment of Fine Materials Engineering Shinshu University Nagano Pre. 386-8567 Japan

Afforestation in arid land is a promising method for carbon fixation, but the effective utili- zation of water is highly.important and required. Thus, the evaluation of the amount of water per unit carbon fixed with the tree growth is required to minimize the amount of water supplied to the plants. In this research, a tree is regarded as a carbon fixation reactor with inflows of water and nutrients from roots, and CO_2 as the carbon source from leaves with outflow of water vapor from leaves and accumulation in the tree itself. In the process of photosy.thesis and respiration nutri- tional elements are dissolved in water flow in trees. They.do not flow out by.these reactions, but are accumulated in trees. Thus, we have treated the behaviour of nutrients as a marker to evaluate the water/carbon ratio. Assuming that nutrient concentration is constant in sap, and the differences in the ratios of nutrient to carbon in living trees and dead (i.e. litter fall, etc.) are neglected, the ratio of the used water to fixed carbon is given as the ratio of nutrient to carbon in the tree body.divided by.the ratio of nutrient to water in sap. However, some nutrients are translocated and concentrated within the tree and some may.be discarded through litter fall. Thus it is important to examine which nutrient element is the most suitable as the tracer. In this paper, the results of the above method applied to Eucaly.tus camaldulensis in semi- arid land of Western Australia are shown. The value of water requirement per unit carbon fixation determined from potassium balance is between 421 kg-H_2O/kg-C for mature trees and 285 kg-H_2O/kg-C for y.ung trees, while the values from calcium balance are much larger than these. The cause of the discrepancy.between these values is discussed based on the measured element concentrations in sap and trees and the plant phy.iology. Finally. the actual average value through the life of a tree is suggested to fall between the two values.

关键词： carbon fixation, unit water requirement, arid land, Western Australia, Eucaly.tus camaldulensis,

Optimization of Cu content for the development of high-performance T5-treated thixo-cast Al-7Si-0.5Mg-Cu(wt.%)alloy

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Journal of Materials Science & Technology 2021年第34期93卷 178-190页

作者： K.y.mamoto M.takahashi y.Kamikubo y.Sugiura S.Iwasawa T.Nakata S.Kamado Nagaoka University.of Technology NagaokaJapan Asanuma Giken Co. Ltd.HamamatsuJapa Industrial Research Institute of Shizuoka Prefecture ShizuokaJapan

Cu content has been successfully.optimized in a thixo-cast and directly.aged(T5-treatment)Al-7 Si-0.5 Mg(wt.%)*** after the 0.5%Cu addition,plate-like Al_(2)Cu(θ’)phases,which contribute to high strengths and large plasticity.are *** formation of a large fraction of Cu-containing brittle phases could be suppressed as ***,the Al-7Si-0.5Mg-0.5Cu alloy.exhibits high ultimate tensile strength,0.2%proof stress,and elongation to failure of 296 MPa,209 MPa,and 8.8%,*** results in a high quality.index similar to that of solution-treated and subsequently.aged(T6-treated)Al-7 Si-Mg alloy..A Cu addition over 1.0%further improves the strengths;however,this leads to poor ductility.because of the high fraction of Cu-containing brittle phases.

关键词： Al-Si-Mg-Cu alloy Thixo-casting T5-treatment Mechanical property Microstructure

Effect of aging treatment on irradiation-induced segregation of high Mn-Cr steel

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Transactions of Nonferrous Metals Society.of China 2011年第A01期21卷 58-61页

作者： D.S.BAE S.P.LEE y.R.CHO H.takahashi Department of Advanced Materials Engineering Dong-Eui University Department of Materials Engineering Dong-Eui University Department of Materials Science and Engineering Pusan National University Center for Advanced Research of Energy.Conversion Materials Hokkaido University

To investigate the effect of aging treatment on irradiation-induced segregation of high Mn-Cr steel, specimens for electron-beam irradiation were prepared from the high Mn-Cr austenitic steel which was solution treated at 1 373 K for 1 h and aging treated at 573 K for 1 000 h, respectively. The electron-beam irradiation was performed at 573 K up to doses of 5.4 dpa in a 1 250 kV HVEM and irradiation-induced segregation analy.es were carried out by.an EDX in a 200 kV FE-TEM. The results show that void formation is not observed in both solution treated and aging treated ones. The amount of Cr segregation at the grain boundary.decreases in the aged one; however, that of Mn is not changed in solution treated one.

关键词： high Mn-Cr steel HVEM electron-beam irradiation irradiation-induced segregation aging