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Application of integrated simulation environment sIEMNEd to the analysis of the MEPHIsT-0 tokamak operation

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Plasma science and Technology 2023年第3期25卷 222-233页

作者： d Yu sYCHUGOV s Yu sOLOVIEV A s ZHILKIN A V MELNIKOV s A KRAT Faculty of Computational Mathematics and Cybernetics Lomonosov Moscow State University National Research Centre Kurchatov Institute National Research Nuclear University Moscow Engineering Physics Institute National University Moscow Institute of Physics and Technology

This paper presents the results of numerical simulation of plasma equilibrium and stability in the MEPHIsT-0 tokamak with sIEMNEd software and comparison of simulation results with *** determined characteristics of the vacuum chamber show that it significantly affects the entire *** various scenarios of the inductor operation,a comparison of experimental data and simulated currents and magnetic fields induced in the chamber was carried *** steady-state tokamak operation,a numerical study of equilibrium plasma configurations was carried out depending on the currents in the poloidal magnetic field coils and plasma *** vertical plasma instability was *** limiting values of plasma ellipticity preventing the vertical plasma instability were numerically *** simulations show that plasma equilibrium is supported by induced *** was shown numerically that magnetic configuration with‘zero of higher order’were obtained before the plasma shot,suggesting consistency between the simulation results and observations.

关键词： mathematical modelling tokamak installation MEPHIsT-0

不明原因的复发性流产中宫颈胎儿纤连蛋白能否预测妊娠早期结局

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世界核心医学期刊文摘（妇产科学分册） 2006年第12期2卷 17-18页

作者： Mercorio F. Mercorio A. sardo A.d.s. 张新艳 department of Gynecology and Obsterics Pathophysiology of Human ReproductionUniversity of Naples'Federico II'Via L. Caldieri 14080128 NaplesItaly

Objective:To determine whether cervical fetal fibronectin is a reliable predictor of first trimester pregnancy outcome in patients with unexplained recurrent miscarriage. study design:A prospective observational study was carried out on 49 pregnant women with a history of unexplained recurrent miscarriage. In all participants the presence of fetal fibronectin in the cervical secretion was.d.termined with a qualitative rapid immunoassay. The outcome of the first trimester pregnancy was recorded a successful outcome was a pregnancy that progress.d.beyond 12 weeks of gestation; a miscarriage referred to a pregnancy loss in the first 12 weeks. Results:Of the 49 subjects screened,fetal fibronectin was positive in 17 and negative in 32. Overall,14 pregnancies resulted in fetal loss before the 12th week of gestation. Fetal cervical fibronectin was positive in 6 of the 14 patients who miscarried and in 11 of the 35 in whom outcome was successful. As predictor of first trimester pregnancy outcome the test had a sensitivity and a specificity of 43%and 69%and positive and negative predictive values of 35%,and 75%,respectively. subgroup analysis by number of previous miscarriages and maternal age gave similar values. Conclusion:This study examines the possible value of cervical fetal fibronectin in predicting first trimester pregnancy outcome. We conclude that the occurrence of positive or negative fetal cervical fibronectin test has only limited predictive value and therefore its use cannot be cons.d.red for clinical application.

关键词：复发性流产妊娠早期纤连蛋白周前免疫测定法前瞻性观察预测价值阳性预测值研究设计特异性

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井下油、水分离系统的联合工业化研究

国外油田工程 1998年第10期14卷 8-11,18页

作者： s.C.solanki T.A.Zahacy W.d.Roggensack 孙淑梅大庆职工大学开发系

随着常规水驱油田开发后期的到来，地面产出水量猛增。必须开发新技术以成功地减少产出水导致的不利的经济和环境效应。前沿工程研究中心（C-FER）已经组织了一个由二十八家经营公司，（合作伙伴）参加的联合工业化研究实体（即JIP），... 详细信息

随着常规水驱油田开发后期的到来，地面产出水量猛增。必须开发新技术以成功地减少产出水导致的不利的经济和环境效应。前沿工程研究中心（C-FER）已经组织了一个由二十八家经营公司，（合作伙伴）参加的联合工业化研究实体（即JIP），来开发井下油、水分离和产出水同井回注系统。此项研究技术已经得到经销者的认可，这些经销者两年来一直同C-FER及JIP成员单位对新系统共同过行研究和现场试验。这些系统充分显示其具有减少成本、生产局限和环境危机的潜力，而这些因素都与地面大量产出水有关。

关键词：油水分离系统产出水回注节能

L-精氨酸治疗急性心肌梗死:心肌梗死中血管与年龄的相互作用(VINTAGEMI)随机临床试验

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世界核心医学期刊文摘（心脏病学分册） 2006年第5期2卷 10-11页

作者： schulman s.P Becker L.C Kass.d.A. 黄浙勇 Johns Hopkins Hospital Halstead 500 Baltimore MD 21287 United StatesDr.

Context: The amino acid L-arginine is a substrate for nitric oxide synthase and is increasingly us.d.as a health supplement. Prior studies suggest that L arginine has the potential to reduce vascular stiffness. Objective: To determine whether the addition of L-arginine to standard postinfarction therapy reduces vascular stiffness and improves ejection fraction over 6-month follow-up in patients following acute sT-segment elevation myocardial infarction. design and setting: single-center, randomized, double-blind, placebo-controlled trial with enrollment from February 2002 to June 2004. Patients: A total of 153 patients following a first sT-segment elevation myocardial infarction were enrolled; 77 patients were 60 years or older. Intervention: Patients were randomly assigned to receive L-arginine(goal dose of 3 g 3 times a day) or matching placebo for 6 months. Main Outcome Measures: Change in gated blood pool-derived ejection fraction over 6 months in patients 60 years or older randomized to receive L-arginine compared with those assigned to receive placebo. secondary outcomes included change in ejection fraction in all patients enrolled, change in noninvasive measures of vascular stiffness, and clinical events. Results: Baseline characteristics, vascular stiffness measurements, and left ventricular function were similar between participants randomized to receive placebo or L-arginine. The mean(sd) age was 60(13.6) years; of the participants, 104(68% ) were men. There was no significant change from baseline to 6 months in the vascular stiffness measurements or left ventricular ejection fraction in either of the 2 groups, including those 60 years or older and the entire study group. However, 6 participants(8.6% ) in the L-arginine group died during the 6-month study period vs none in the placebo group(P=.01). Because of the safety concerns, the data and safety monitoring committee clos.d.enrollment. Conclusions: L-Arginine, when added to standard postinfarction ther

关键词： sT段抬高型急性心肌梗死随机临床试验 L-精氨酸治疗基础血管相互作用年龄心肌梗死患者射血分数观察指标

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建筑物中白蚁的防治

农药译丛 1991年第6期13卷 20-23,43页

作者： J.W.M.Logan d.s.Buckley 张敏恒英国自然资源研究所英国44 StRualdsCloseWa1lingford

白蚁对建筑物的破坏到目前为止,在一些温带和大部分热带地区,白蚁是建筑及公共设施中未防护木材的最大威胁。据估计,仅1986年全世界用于维修受白蚁破坏的建筑木材所需费用达20亿美元。在美国,白蚁破坏造成的损失为7.5～15亿美元。1986年... 详细信息

白蚁对建筑物的破坏到目前为止,在一些温带和大部分热带地区,白蚁是建筑及公共设施中未防护木材的最大威胁。据估计,仅1986年全世界用于维修受白蚁破坏的建筑木材所需费用达20亿美元。在美国,白蚁破坏造成的损失为7.5～15亿美元。1986年,杀白蚁剂总销售额为0.5亿美元。使用30多年的主要品种有机氯类杀虫剂的停用,给白蚁防治带来了严重的影响。

关键词：建筑物白蚁防治杀虫剂

用有可弯曲性外鞘及内含与其共轴的软性胚胎移植管的硬性宫颈口导管进行插管不影响体外受精-胚胎移植的效果

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世界核心医学期刊文摘（妇产科学分册） 2005年第4期1卷 47-48页

作者： silberstein T. Weitzen s. Frankfurter d. 朱国栋

To assess the impact of cannulation of a resistant cervical os with the outer malleable sheath of a doublelumen, soft ET catheter on IVFET outcomes. Retrospective cohort study. Universitybas.d.IVF center. One hundred fortytwo patients undergoing 142 ETs. Trial ultrasoundguided ET at all transfers, leaving the malleable outer sheath in situ when the soft inner catheter could not negotiate the internal os. Implantation rate and clinical pregnancy rate. In 102 ETs (71.8%), the soft inner sheath easily negotiated the internal os (group 1). Forty ETs (28.2%)required cannulation of resistant internal ora with the outer sheath of the trial catheter (group 2). Implantation rates (35%vs. 32%in groups 1 and 2, respectively) and clinical pregnancy rates (50%vs. 45%) were not significantly different between groups. Blood was present on the transfer catheter after ET more frequently in group 2 than in group 1 (55%vs. 15%); however, neither the implantation rate nor the clinical pregnancy rate were affected by the presence of blood. Cannulation of a resistant internal os by the malleable outer sheath and blood on the transfer catheter after ET do not have an adverse effect on implantation rate or clinical pregnancy rate.

关键词：胚胎移植管弯曲性颈口共轴胚胎着床外鞘受孕率宫颈内口出血现象回顾性队列研究

建立国家服务框架后老年患者的冠心病二级预防:基于人群的研究

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世界核心医学期刊文摘（心脏病学分册） 2006年第6期2卷 1-2页

作者： Ramsay s.E. Whincup P.H. Lawlor d.A. 杜媛 department of Primary Care and Population sciences Royal Free and University College Medical School London NW3 2PF United Kingdom

Objective: To examine the extent of uptake of medication for secondary prevention of coronary heart disease in older British men and women before(1998- 2001) and after(2003) the implementation of the national service framework. design: Two population bas.d. longitudinal studies of men and women aged 60- 79 in 1998- 2001, bas.d.in one general practice in each of 24 British towns. Participants: Men and women with established coronary heart disease at the two time points(respectively 817 and 465 in 1998- 2001, 857 and 548 in 2003), aged 60- 79 in 1998- 2001. Main outcome measures : Prevalence of use of antiplatelet medication, statins, β blockers, angiotensin converting enzyme(ACE) inhibitors, and other blood pressure lowering treatments(individually and in combination) assess.d.in 1998- 2001 and 2003. Results: Between 1998- 2001 and 2003, the use of all individual drugs had increas.d.in both men and women, especially for statins(from 34% to 65% in men and from 48% to 67% in women with myocardial infarction). However, less than half received β blockers and ACE inhibitors, even by 2003. Prevalences of medication use were lower in patients with angina than in those with myocardial infarction. The proportions of patients receiving more than one drug increas.d.over time; by 2003 about half of patients with myocardial infarction and a third of those with angina were receiving antiplatelet medication, statins, and blood pressure lowering treatments. Conclusions: Between 1998- 2001 and 2003, statin uptake and the use of combined drug treatment in elderly men and women increas.d.markedly. Further potential exists, however, for reducing the risk of recurrent coronary heart disease in older patients, particularly by improving the uptake of medication among angina patients, and by more extensive use of blood pressure lowering treatment(particularly with β blockers and ACE inhibitors).

关键词：二级预防冠心病老年患者人群服务血管紧张素转换酶女性患者老年男性综合医疗机构抗血小板药物

非定向PVC的X—射线衍射曲线中无定形背影的测定

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聚氯乙烯 1982年第3期 46-48页

作者： s.J.Garrevo ,d.Meader ,A.Keller ,崔志清太原化工厂

一种通用的确定PVC中结晶度的方法是通过对非定向样品X—射线衍射图的分析而获得的,该方法依赖于从整个信号中对无定形背影的分离,无定形成分的性质已由骤冷样品所证明,并确信这种骤冷样品是代表整个无定形状态的。本短讯的目的就是引... 详细信息

一种通用的确定PVC中结晶度的方法是通过对非定向样品X—射线衍射图的分析而获得的,该方法依赖于从整个信号中对无定形背影的分离,无定形成分的性质已由骤冷样品所证明,并确信这种骤冷样品是代表整个无定形状态的。本短讯的目的就是引起对下列事实的注意,即通常所采用的PVC无定形散射作为给晶度的测量可能是不正确的。在逐渐

关键词： PVC 结晶度无定形射线衍射非定向

应用模拟方法比较矿石粉碎回路的能量利用效率

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现代矿业 1999年第17期24卷 18-20页

作者： R.d.莫里森 s.莫留尔黄文志澳大利亚JKTech公司澳大利亚JK矿物研究中心经理经理

在朱利叶斯克鲁茨尼特(Julius Kruttschnitt)矿物研究中心(JKMRC)已开发了一种能精确估计范围广泛的矿石处理设备能耗的模型。应用这种模型,可以通过对特定矿石类型的模拟而比较矿石选别回路及操作条件。由于模型分类的精确性,故能研究... 详细信息

在朱利叶斯克鲁茨尼特(Julius Kruttschnitt)矿物研究中心(JKMRC)已开发了一种能精确估计范围广泛的矿石处理设备能耗的模型。应用这种模型,可以通过对特定矿石类型的模拟而比较矿石选别回路及操作条件。由于模型分类的精确性,故能研究分级机效率与目的产品粒度之间的交互作用。本文通过实例研究了一系列回路的类型及综合的能量利用效率。在实例研究中对类似的矿石采用不同的回路进行处理。

关键词：粉碎分级建模及模拟回路设计