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Micro-synchrophasor based special protection scheme for distribution S.Stem automation in a smart city

Protection and Control of Modern Power S.Stems 2020年第1期5卷 97-110页

作者： Deepa s.Kumar savier J.s Biju S.S Dept of Electrical Engineering College of EngineeringTrivandrumKeralaIndia 400/220kV substation Powergrid Corporation of India Ltd.TrivandrumKeralaIndia Power S.Stem Operations Kerala State Electricity Board Ltd.KeralaIndia

Introduction:Aspects of power S.Stem protection which contributes to mal-operations and blackouts can be improved by supervision of S.Stem behavior and response based analyS.S rather than condition-based or event-based analyS.S using wide area measurements based on synchrophasor technology.The paper explores the application of micro-Phasor Measurement Unit for time synchronized real-time distribution network monitoring and agile decision support schemes for S.Stem prognoS.S and control.Case description:The scheme is proposed as part of a project on“Power S.Stem Voltage stability AnalyS.S using synchrophasors in Distribution S.Stem of Kerala Grid”at Kerala state Electricity Board Ltd.An actual grid occurrence during the severe tropical cyclone Ockhi,is considered as the base case which motivated the work.Discussion and evaluation:A voltage stability index(VsI)based special protection scheme(S.S)for radial distribution network at a proposed smart city is presented in the present study.The proposed special protection scheme on actual implementation can use data from proposed local micro-Phasor Measurement Unit.The PMU is proposed to be placed at one of the key nodes of the distribution S.Stem network in the city.Conclusion:The VsI is derived using local phasor values and is used to initiate a special Protection scheme for N-1 contingency at the key node,so as to ensure availability of the most essential feeder which provideS.Supply to a hospital campus housing several health institutes of prime importance.The voltage stability index derived is tested and S.S is validated using real-time grid data.

关键词： Micro-phasor measurement unit Power S.Stem protection Voltage stability Power S.Stem stability Power distribution smart grids

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A New Class of Generalized Close-to-starlike Functions Defined by the srivastava-Attiya Operator

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Acta Mathematica sinica,English series 2013年第5期29卷 833-840页

作者： H.M.sRIVAsTAVA Dorina RADUCANU Grigore S.SLGEAN Department of Mathematics and statistics University of Victoria Faculty of Mathematics and Computer science Transilvania University of Brasov Faculty of Mathematics and Computer science Babe s-Bolyai University

In this paper, we consider a new class CS.S,b of generalized close-to-starlike functions, which is defined by means of the srivastava-Attiya operator Js,b involving the Hurwitz-Lerch Zeta function φ（z, s, a）. Basic resultS.Such as inclusion relations, coefficient inequalities and other interesting properties of this class are investigated. Relevant connections of some of the results presented here with those that were obtained in earlier investigations are pointed out briefly.

关键词： Analytic functions starlike functions convex functions close-to-starlike functions srivastava-Attiya operator inclusion results coefficient bounds coefficient inequalities hadamard product （or convolution）

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Brief potentially ictal rhythmic discharges on intraoperative electrocorticography predict a good outcome of focal cortical dysplasia after surgical resection: a case report

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Acta Epileptologica 2023年第3期6卷 163-167页

作者： sofía S.Sánchez‑Boluarte Wilfor Aguirre‑Quispe Manuel Herrera Aramburú William O.Tatum Walter De La Cruz Ramírez school of Medicine Cesar Vallejo UniversityAv.Victor LarcoTrujilloTrujillo 1770Peru Departamento de Epilepsia Instituto Nacional de Ciencias NeurológicasJr.Ancash 1271LimaLima 15001Peru Neurosciences Clinical Effectiveness and Public Health Research GroupUniversidad Científica del SurPanamericana Sur 19Villa EL SalvadorLimaLima 15067Peru Department of Neurology Mayo ClinicMangurian Bldg.Fourth Floor4500 San Pablo RoadFL 32224 JacksonvilleUSA

Background Focal cortical dysplasia(FCD)is a common cause of drug-reS.Stant epilepsy.Electroencephalography(EEG)biomarkers that predict good postoperative outcomes are essential for identifying patients with focal epilepsies.Case presentation We report the case of a 21-year-old female with seizure onset at the age of 9,characterized by left-hand dystonic posturing and impaired awareness,which evolved to bilateral tonic-clonic seizures,evaluated in a neurological referral center in Lima,Peru.During 6-h video-EEG,interictal EEG revealing focal brief potentially ictal rhythmic discharges(BIRDs)over the right frontal central region,lasting less than 10 s.The ictal features were characterized by low-voltage fast activity over the same area.Brain magnetic resonance imaging(MRI)demonstrated a focal lesion of focal cortical dysplasia type II in the right frontal lobe.The patient underwent a lesionectomy guided by electrocorticography,which showed continuous polyspikes.BIRDS.Showing a brief burst of spikes lasting longer than 0.5 s,were also identified on intraoperative electrocorticography(ECoG)and helped define the extent of resection.The patient obtained an Engel Outcome Class IA at 6 years of follow-up.Conclusions The atypical BIRDs on ECoG can be used as a prognostic biomarker for prolonged seizure-freedom outcome in patients with epilepsy.Additional reports are needed in developing countries with and without brain MRI lesions to advance outpatient presurgical evaluations despite limited resources.

关键词： Electrocorticography Cortical dysplasia-focal epilepsy syndrome Drug-reS.Stant epilepsy Frontal lobe epilepsy

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Calibrating partial factors for Danish railway embankments using probabilistic analyS.S

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Journal of Rock Mechanics and Geotechnical Engineering 2014年第2期6卷 150-155页

作者： Michael R.Lodahl Kristian T.Brdbk Carsten S.Srensen COWI A/s

High coS.S are connected with upgrading railway embankments throughout Denmark using the partial factors for geotechnical design calibrated for general application. One way to reduce the coS.S is reliability-based calibration of the partial factors to a reasonable safety level taking into account the specific design situations and uncertainties relevant to railway embankments. A reliability-based design has been investigated, resulting in an optimal partial factor for the considered subsoil. With a stochastic soil model to simulate the undrained shear strength of soft soil deposits, the partial factor is calibrated using asymptotic sampling for the reliability asS.Ssment. The calibration shows that the partial factor can be reduced significantly compared to the value specified in the Danish National Annex to Ds/EN 1997-1 （2007）, Eurocode 7.

关键词： Railway embankment Reliability index Partial factor stochastic soil modelling

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切尔诺贝利事故辐射受照人员淋巴细胞核的形态变化

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中国辐射卫生 2009年第2期18卷 129-131页

作者：李雨 Kravtsov V.Yu Aleksanin S.S 上海第二军医大学海医系放射医学教研室上海200433 俄罗斯急救与放射医学中心

目的观察受照射的切尔诺贝利事故清理工作者外周血淋巴细胞核特殊形态变化。方法选取切尔诺贝利事故清理工作者作为试验组,采用常规方法取指尖外周血制备涂片,空气干燥,对氨基苯甲酸混合,Giemsa法染色,光镜下计数每人500个细胞样本,观... 详细信息

目的观察受照射的切尔诺贝利事故清理工作者外周血淋巴细胞核特殊形态变化。方法选取切尔诺贝利事故清理工作者作为试验组,采用常规方法取指尖外周血制备涂片,空气干燥,对氨基苯甲酸混合,Giemsa法染色,光镜下计数每人500个细胞样本,观察记录不同特殊形态核发生率,进行统计学处理。结果大多数受照射对象都出现较多带有尾状突起的淋巴细胞。根据这些核上突起的尾状物形态特征将其分为16种类型并分别记录了每种尾状突起细胞的发生率并进行分布率分析。结论受照射淋巴细胞核尾状突起变化可能是一种有意义的受照射标记物,对于更加详尽获取辐射生物效应信息,回顾性研究辐射剂量效应可能具有理论和实践价值。

关键词：切尔诺贝利核事故辐射淋巴细胞

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鼻窦部的许旺氏细胞瘤:一例罕见的临床病理学实例回顾(英文)

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中德临床肿瘤学杂志：英文版 2012年第5期11卷 304-306页

作者： Nadia shirazi saurabh Varshney Meena Harsh S.S Bisht Department of Pathology Himalayan Institute of Medical SciencesHIHT UniversityDehradunIndia Department of Otorhinolaryngology Himalayan Institute of Medical SciencesHIHT UniversityDehradunIndia

schwannomas are benign neoplaS.S arising from schwann cells of the peripheral,cranial and autonomic nerves.We report a case of schwannoma in the sino-nasal tract,a very rare site of tumour origin with unusual pseudoan... 详细信息

关键词：自主神经临床病理鼻塞病理组织学变化体重雪旺氏细胞渐进性肿瘤

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所谓的贝加尔裂谷实际为水平挤压带

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世界地质 1991年第1期10卷 143-144页

作者： Osadchy S.S 吕传江

贝加尔带并不是一个裂谷带,而是一个水平挤压带。为证实这一假设我们业已分析了地质、地球物理和地貌方面的资料。分析是依据板块与旋转理论进行的。获得的模式涉及各种内动力作用,如运动学、构造学、火山活动、地震活动和这些作用在构... 详细信息

贝加尔带并不是一个裂谷带,而是一个水平挤压带。为证实这一假设我们业已分析了地质、地球物理和地貌方面的资料。分析是依据板块与旋转理论进行的。获得的模式涉及各种内动力作用,如运动学、构造学、火山活动、地震活动和这些作用在构造和地形上的表现形式。该模式如下: 在中新生代北东欧亚板块的岩石圈运功到西南部。上杨斯克褶皱带超伏在西伯利亚台地之上。并且后者挤压它的南部格架。在贝加尔带的东北部发生了地块相撞。这就导致了斯塔诺夫高地的形成。沿着该带北东翼的盆地,产生了恰拉-北贝加尔位移。然而,这个左行移动带包括一个走向延伸至蒙古-鄂霍次克带的宽阔地块。在该区。

关键词：贝加尔裂谷水平挤压带盆地

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丝绸之路经济带对沿路国家及城市的经济影响——之中哈战略合作伙伴关系

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经贸实践 2015年第12X期 20-页

作者：刘超 Ospanov S.S 哈萨克斯坦阿勒法拉比国立大学经济学院

一带一路的概念是"丝绸之路经济带"和"21世纪海上丝绸之路"的简称,2013年9月10日由中华人民共和国主席习近平提出的建设"新丝绸之路经济带"以及"21世纪海上丝绸之路"的战略构想。

关键词：丝绸之路合作发展经济影响

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非动脉炎性前部缺血性视神经病变的视野异常:初诊的视野表现及患病率

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世界核心医学期刊文摘(眼科学分册) 2006年第3期 23-24页

作者： Hayreh S.S Zimmerman B. 陈立军 Departmentof Ophthalmology and Visual sciences UniversityHospitals and Clinics 200 Hawkins Dr Iowa City IA52242-1091 United states Dr.

Objective: To evaluate the pattern of various types of visual field defects and their prevalence at initial examination of nonarteritic anterior ischemic optic neuropathy (NA-AION).Methods: The data were compiled from 312 consecutive eyes (in 265 patients)that fulfilled our inclusion and exclusion criteria. A comprehensive ophthalmic evaluation was performed, includingre cording of visual acuity, visual fields with a Goldmann perimeter (using I-2e, I-4e, and V-4e targets regularly), and intraocular pressure; slitlamp examination of the anterior segment;ophthalmoscopy; color fundus photography; and in acute caS.S, fluorescein fundus angiography. The visual field defects were divided into 2 groups: (1) general field defects and (2)-various types of scotoma in the central 30°. The prevalence of various types of visual field defects was estimated for I-2e, I-4e, and V-4e isopters by dividing the total number of eyes with thedefect by the total number of eyes that could see that particulartarget. Exact 95%confidence limits for the prevalence were computed. Results: Of the 265 patients, 169 (63.7%) were male and the mean±sD patient age was 55.0±9.1 years. The median interval between the first visual field test and the onset of NA-AION was 2 weeks. Of the 312 eyes, the I-2e target waS.Seen by 75.3%, the I-4e target by 90.7%, and the V-4e targetby 100%. Overall prevalence of general visual field defects was 83.4%with I-2e, 78.8%with I-4e, and 68.9%with V-4e,whereas the prevalence of scotoma(s) within the central 30°was 55.3%, 49.5%, and 36.2%, respect ively. Central scotoma waS.Seen in 48.5%with I-2e, 43.8%with I-4e, and 29.2%with V-4e. A detailed prevalence of various types of visualfield defects is given. Relative inferior altitudinal defect was most common (34.9%with I-2e and 22.3%with I-4e), but the absolute inferior altitudinal defect waS.Seen in only 8.0%. Bycontrast, absolute inferior nasal sector visual loss was the most common defect detected in NA-AION (22.4%), but it occurredin only 3.4%with I-2e and 11.0%with

关键词：非动脉炎性前部缺血性视神经病变视野缺损患病率

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开放复位加骨水泥固定治疗继发于缺血坏死的股骨头骨折的初步报告(英文)

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中国矫形外科杂志 2001年第6期8卷 559-562页

作者：伍德 M.L 凯利.S.S 北卡罗来纳大学医学院矫形外科

对股骨头缺血坏死的早期治疗已取得较好的结果 ,但对股骨头已塌陷治疗效果并不满意 ,我们采取开放复位加骨水泥内固定治疗这类病人 2 1例 (2 2侧髋 ) ,均属于股骨头坏死Ⅲ期 ,随访 1～ 3年 ,平均 1.7年 ,术前术后根据Har ris髋关节评分... 详细信息

对股骨头缺血坏死的早期治疗已取得较好的结果 ,但对股骨头已塌陷治疗效果并不满意 ,我们采取开放复位加骨水泥内固定治疗这类病人 2 1例 (2 2侧髋 ) ,均属于股骨头坏死Ⅲ期 ,随访 1～ 3年 ,平均 1.7年 ,术前术后根据Har ris髋关节评分标准 ,骨性关节炎指数和sF36健康状况调查表评定治疗效果 ,所有病人均感到术后疼痛减轻 ,功能改善。三个评分指标分别为 5 4.2～ 82 .2 (P <0 .0 5 ) ,5 5 .8～ 2 8.7(P <0 .0 5 ) ,2 7.5～ 43 .1(P <0 .0 5 )。 6例病人进行了全髋置换。该方法简单 ,病人恢复快 ,但长期随访及预后有待进一步研究。

关键词：开放复位缺血坏死股骨头骨折治疗

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