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大型飞机供配电系统可靠性评估与分析

航空学报 2011年第8期32卷 1488-1496页

作者：蔡林张玲杨善水王莉南京航空航天大学电气工程系航空航天电源技术教育部工程研究中心江苏南京210016

飞机供配电系统的可靠运行是关系飞机飞行安全的关键因素。以某供配电网络为例介绍了一种适合大型飞机复杂供配电网络的可靠性评估方法,并对该供配电网络的可靠性指标进行了评估和分析。该评估方法利用图论的知识,首先将飞机配电系统抽... 详细信息

飞机供配电系统的可靠运行是关系飞机飞行安全的关键因素。以某供配电网络为例介绍了一种适合大型飞机复杂供配电网络的可靠性评估方法,并对该供配电网络的可靠性指标进行了评估和分析。该评估方法利用图论的知识,首先将飞机配电系统抽象为网络图;然后采用深度优先搜索法求出电源点到负荷点的最小路集,进而求出相应的最小割集,找出系统运行的薄弱环节;最后,通过对最小割集的不交化处理结合配电系统部件的原始可靠性数据得出大型飞机供配电系统的可靠性指标。本文方法可以为大型飞机复杂供配电网络的设计和可靠性评估提供参考。

关键词：飞机供配电系统复杂网络可靠性深度优先搜索最小割集

Consensus of Second-order Multi-agent Systems with Nonsymmetric Interconnection and Heterogeneous Delays

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International Journal of Automation and computing 2011年第4期8卷 421-428页

作者： Hong-Yong yang Fu-cai Wang Si-Ying Zhang School of Information Science and Engineering Ludong University Yantai 264025 PRC

In this paper, a consensus algorithm of multi-agent second-order dynamical systems with nonsymmetric interconnection and heterogeneous delays is studied. With the hypothesis of directed weighted topology graph with a globally reachable node, decentralized consensus condition is obtained by applying generalized Nyquist criterion. For the systems with both communication and input delays, it is shown that the consensus condition is dependent on input delays but independent of communication delays.

关键词： Consensus nonsymmetric interconnection second-order multi-agent systems heterogeneous delays.

A strategy for rapid discovery of traceable chemical markers in herbal products using MZmine 2 data processing toolbox:A case of Jing Liqueur

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Chinese Herbal Medicines 2021年第3期13卷 430-438页

作者： Jing Zhou Feng-jie Liu Xin-xin Li Ping Li Hua yang Yuan-cai Liu yan-he Chen Chao-dan Wei Hui-jun Li State Key Laboratory of Natural Medicines China Pharmaceutical UniversityNanjing 210009China Hubei Provincial Key Laboratory for Quality and Safety of Traditional Chinese Medicine Health Food Jing Brand Co.Ltd.Daye 435100China Jing Brand Research Institute Jing Brand Co.Ltd.Daye 435100China

Objective:The quality evaluation of herbal products remains a big *** markers are the core concept of the authentication of herbal ***,the discovery of traceable markers is labor-intensive and *** aim of this study is to develop a convenient approach to rapidly screen the traceable markers for herbal product ***:Commercial Jing Liqueur and its 22 species of herbal ingredients were analyzed using HPLCQTOF-MS and GC–MS to characterize nonvolatile and volatile *** acquired data were imported into MZmine 2 software for mass detection,chromatogram building,deconvolution and *** aligned data were exported into a csv file and then traceable markers were selected using the built-in filter function in ***,the traceable markers were identified by searching against online databases or publications,some of which were confirmed by reference ***:A total of 288 chemical features transferred from herbal materials to Jing Liqueur product were rapidly screened *** them,52 markers detected by HPLC-QTOF-MS were annotated,while nine volatile markers detected by GC–MS were ***,30 of these markers were confirmed by comparing with reference standards.A chemical fingerprint consisting of traceable markers was finally generated to ensure the authentication and quality consistency of Jing ***:A strategy for rapid discovery of traceable markers in herbal products using MZmine 2 software was developed.

关键词： GC–MS herbal products HPLC-QTOF-MS Jing Liqueur MZmine 2 traceable markers

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杯芳烃多齿水杨醛亚胺衍生物的合成

有机化学 2005年第5期25卷 576-578,i004页

作者：蔡亚华王云艳颜朝国扬州大学化学化工学院扬州225002

以对叔丁基杯[n]芳烃1a～1b(n=6,8)为原料,经过三步反应,以较高产率合成了一系列含多个水杨醛亚胺端基的西佛碱衍生物5a～5f.对叔丁基杯[n]芳烃用溴乙酸乙酯进行烃基化反应,生成杯芳烃氧代乙酸乙酯2a～2b,后者与过量脂肪族二胺NH2(CH2)m... 详细信息

以对叔丁基杯[n]芳烃1a～1b(n=6,8)为原料,经过三步反应,以较高产率合成了一系列含多个水杨醛亚胺端基的西佛碱衍生物5a～5f.对叔丁基杯[n]芳烃用溴乙酸乙酯进行烃基化反应,生成杯芳烃氧代乙酸乙酯2a～2b,后者与过量脂肪族二胺NH2(CH2)mNH2(m=2,4,6)反应,生成含有游离氨基的杯芳烃酰胺衍生物4a～4f,再与水杨醛在乙醇中反应生成目标产物席夫碱衍生物.

关键词：杯芳烃多齿配体酰胺席夫碱合成方法乙醇水杨醛

Effects of adalimumab and secukinumab on comorbidities associated with metabolism in patients with plaque psoriasis

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Chinese Medical Journal 2022年第18期135卷 2248-2250页

作者： Si Zhang Lin cai Heng Zhang Zheng Zhao Xiaoyang Liu yan Zhao Jianzhong Zhang Department of Dermatology Peking University People’s HospitalBeijing 100044China Department of Dermatology Peking University International HospitalBeijing 102206China

To the Editor:Psoriasis is often associated with comorbidities such as cardiovascular diseases,obesity,and metabolic syndrome(MS).However,the prevalence of abovementioned diseases in Chinese patients with plaque psoriasis is still ***,biologics such as tumor necrosis alpha inhibitors,interleukin-17A inhibitors have been successfully used in the treatment of plaque ***,the effects of biological treatment on comorbidities associated with metabolism are still *** on the relationship between the comorbidities associated with metabolism and plaque psoriasis and the effects of biologics are necessary.

关键词： metabolism psoriasis morbid

新结构主义框架下的经济增长核算——来自95个发展中国家面板数据的实证分析

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国际商务研究 2017年第5期38卷 5-14,46页

作者：余熙蔡秀玲福建师范大学福建师范大学协和学院

新古典主义与结构主义均未能很好地解释二战以来发展中国家经济增长的差异。林毅夫认为发展中国家的产业结构只有遵循其要素禀赋结构时才符合比较优势,经济也才最富有竞争力。本文对技术选择指数进行了修正,并基于95个发展中国家的面板... 详细信息

新古典主义与结构主义均未能很好地解释二战以来发展中国家经济增长的差异。林毅夫认为发展中国家的产业结构只有遵循其要素禀赋结构时才符合比较优势,经济也才最富有竞争力。本文对技术选择指数进行了修正,并基于95个发展中国家的面板数据对"林毅夫经济增长命题"进行检验。结果显示,发展中国家的经济增长率与技术选择指数存在着倒"U"型关系,即在给定要素禀赋结构条件下存在着最优的产业结构,从而为"林毅夫经济增长命题"的存在提供了经验证据。

关键词：要素禀赋结构产业结构经济增长技术选择指数比较优势

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基于面向对象的海岸带土地利用信息提取研究

自然资源学报 2014年第9期29卷 1589-1597页

作者：王彩艳王瑷玲王介勇王瑞燕姜峥嵘山东农业大学资源与环境学院山东泰安271018 土肥资源高效利用国家工程实验室山东泰安271018 中国科学院地理科学与资源研究所北京100101 乳山市国土资源局山东乳山264500

针对海岸带复杂多样的土地利用信息,选取山东省乳山市海岸带为研究区域,运用Landsat TM遥感影像数据,基于面向对象分类方法,利用不同地物的光谱、形状、纹理和空间关系等特征,通过多尺度分割、隶属度函数法和标准最邻近分类法提取研究... 详细信息

针对海岸带复杂多样的土地利用信息,选取山东省乳山市海岸带为研究区域,运用Landsat TM遥感影像数据,基于面向对象分类方法,利用不同地物的光谱、形状、纹理和空间关系等特征,通过多尺度分割、隶属度函数法和标准最邻近分类法提取研究区土地利用信息,并对分类结果进行精度评估。结果表明:1隶属度函数法和标准最邻近分类法结合,提取出乳山市海岸带12种土地利用类型信息,很好地区分了盐田和养殖水面、林地和园地,可提取出主要的道路和河流等细长线状地物;2将提取结果与最大似然法对比,面向对象分类方法提取精度达到82.50%,Kappa系数为0.8091,分别比最大似然法提高了11.44%和0.1055,很好地避免"同物异谱"和"异物同谱"对分类精度造成的影响,有效地避免了"椒盐"现象。面向对象分类方法提取中分辨率遥感影像精度较高,为海岸带土地利用信息的快速、准确提取提供了有效的技术手段。

关键词： LandsatTM 乳山市海岸带土地利用信息面向对象分类

Simulation of Water-Resistance of a Clay Layer During Mining:Analysis of a Safe Water Head

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Journal of China University of Mining and Technology 2007年第3期17卷 345-348页

作者： DONG Qing-hong cai Rong yanG Wei-feng School of Resources and Earth Science China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Suzhou Track Transportation Co Ltd Suzhou Jiangsu 215004 China

Given previous research and prototypical geological conditions of a mining workface,we simulated fis-sure development in clay layers at the bottom of Quaternary strata and above bedrock,sand and water inrush during mining by model experiments. The results show that V-shaped fissures usually occur in the bottom clay layer at the front top of the active face and that the position of these fissures changes periodically with ground pressure intervals. These fissures occur exactly in the area where the horizontal strain is concentrated. The results also demonstrate that the permeability coefficient of the cracked clay decreases while fissures tend to close. The permeability of the cracked bottom clay layer increases rapidly after a turning point in the permeability coefficient-water head curve (K-H curve) under a certain vertical load. Under static water pressure,the permeability coefficient of cracked clay decreases when load increases. A turning point in the K-H curve showed up and can be seen as a cutoff point to de-cide water inrush under a certain load level. Under an instantaneous water head,the greatest ability of the cracked clay to avoid drastic water inflow is a little higher than that under static conditions.

关键词： model testing water-resistance of the clay layer safety water head water and sand inrush

Disruption of interstitial cells of Cajal networks after massive small bowel resection

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World Journal of Gastroenterology 2013年第22期19卷 3415-3422页

作者： Jie Chen Lei Du Yong-Tao Xiao Wei cai Department of Pediatric Surgery Xin Hua Hospital Shanghai Jiaotong University School of Medicine Department of Pediatric Surgery School of Medicine Affiliated Hospital of Nantong University Shanghai Key Laboratory of Pediatric Gastroenterology and Nutrition Shanghai Institute of Pediatric Research Shanghai Jiaotong University

AIM: To investigate the disruptions of interstitial cells of Cajal (ICC) in the remaining bowel in rats after massive small bowel resection (mSBR). METHODS: Thirty male Sprague-Dawley rats fitting entry criteria were divided randomly into three experimental groups (n = 10 each): Group A rats underwent bowel transection and re-anastomosis (sham) and tissue samples were harvested at day 7 post-surgery. Group B and C rats underwent 80% small bowel resection with tissue harvested from Group B rats at day 7 post-surgery, and from Group C rats at day 14 postsurgery. The distribution of ICC at the site of the resid-ual small bowel was evaluated by immunohistochemical analysis of small intestine samples. The ultrastructural changes of ICC in the remnant ileum of model rats 7 and 14 d after mSBR were analyzed by transmission electron microscopy. Intracellular recordings of slow wave oscillations were used to evaluate electrical pacemaking. The protein expression of c-kit, ICC phenotypic markers, and membrane-bound stem cell factor (mSCF) in intestinal smooth muscle of each group were detected by Western blotting. RESULTS: After mSBR, immunohistochemical analysis indicated that the number of c-kit-positive cells was dramatically decreased in Group B rats compared with sham tissues. Significant ultrastructural changes in ICC with associated smooth muscle hypertrophy were also observed. Disordered spontaneous rhythmic contractions with reduced amplitude (8.5 ± 1.4 mV vs 24.8 ± 1.3 mV, P = 0.037) and increased slow wave frequency (39.5 ± 2.1 cycles/min vs 33.0 ± 1.3 cycles/min, P = 0.044) were found in the residual intestinal smooth muscle 7 d post mSBR. The contractile function and electrical activity of intestinal circular smooth muscle returned to normal levels at 14 d post mSBR (amplitude, 14.9 ± 1.6 mV vs 24.8 ± 1.3 mV; frequency, 30.7 ± 1.7 cycles/min vs 33.0 ± 1.3 cycles/min). The expression of Mscf and c-kit protein was decreased at 7 d (P = 0.026), but gradually returne

关键词： Interstitial cells of Cajal c-kit Slow wave Massive small bowel resection Intestinal dysfunction