|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | A Shoreline Change Analysis Along the Coast Between Kanyakumari and Tuticorin, India, Using Digital Shoreline Analysis System显示文摘The shoreline is one of the rapidly changing landforms in coastal areas.They are the key element in coastal GIS and provide the most information on coastal land form dynamics.Therefore,accurate detection and frequent monitoring of shorelines is very essential to understand the coastal processes and dynamics of various coastal features.The present study is to investigate the shoreline changes along the coast between Kanyakumari and Tuticorin of south India(where hydrodynamic and morphologic changes occur continuously after the December 2004 tsunami)by using Digital Shoreline Analysis System(DSAS),an extension of ArcGIS.Multidate IRS and Landsat Satellite data(1999,2001,2003,2005,2007,and 2009)are used to extract the shorelines.The data is processed by using the ERDAS IMAGINE 9.1 software and analyzed by ArcGIS 9.2 workstation.The rates of shoreline changes are estimated by three statistical methods,namely,End Point Rate(EPR),Linear Regression Rate(LRR),and Least Me-dian of Squares(LMS)by using DSAS.The study reveals that most of the study area has undergoing erosion.Both natural and an-thropogenic processes along the coast modify the shoreline configuration and control the erosion and accretion of the coastal zones.The coastal zones along the estuary have experienced accretion due to the littoral processes.The zones with headlands have more eroded than other zones along the study area.The study also shows that the coastal zones where sand is mined have relatively more rate of erosion than that of the other zones.Improper and unsustainable sand mining may also lead to severe erosion problem along this area.The shoreline change rates are altered by various geological processes along the coast.Thus,the present study implies that proper beach filling and nourishment projects should be made in the study area to save from hazards.It also indicates the advantage and suitability of DSAS to assess the shoreline changes compared with the traditional manual shoreline change analysis and prom-ising its applications for coastal zone management in other regions. | SHEIK Mujabar CHANDRASEKAR | 2011 | Geo-Spatial Information Science2011，14，4： | 26 |
| 2 | Exponential H_∞ filtering analysis for discrete-time switched neural networks with random delays using sojourn probabilities显示文摘This paper is concerned with the exponential H_∞ filtering problem for a class of discrete-time switched neural networks with random time-varying delays based on the sojourn-probability-dependent method. Using the average dwell time approach together with the piecewise Lyapunov function technique, sufficient conditions are proposed to guarantee the exponential stability for the switched neural networks with random time-varying delays which are characterized by introducing a Bernoulli stochastic variable.Based on the derived H_∞ performance analysis results, the H_∞ filter design is formulated in terms of Linear Matrix Inequalities(LMIs). Finally, two numerical examples are presented to demonstrate the effectiveness of the proposed design procedure. | CAO JinDe RAKKIYAPPAN R. MAHESWARI K. CHANDRASEKAR A. | 2016 | Science China(Technological Sciences)2016，59，3： | 9 |
| 3 | 将“大富翁”游戏引入基础会计教学显示文摘在国外,商业模拟游戏被广泛地应用到会计课的教学中且收效良好,然而国内尚未发现相关的理论与实际运用。本文通过对现有文献的综述,让读者对模拟游戏教学方法的发展历史以及重要性和作用有一个清晰的认识,同时以中国企业会计准则为背景,改进'大富翁'游戏,设计模拟游戏教学方案,并指出未来研究方向。 | 任海云 Krishnamurti Chandrasekar 田韬略 | 2013 | 财会月刊(中)2013，，2： | 8 |
| 4 | Prominent catalytic activity of mesoporous molecular sieves in the vapor phase dehydration of cyclohexanol to cyclohexene显示文摘Cerium incorporated KIT-6 mesoporous materials were synthesized through direct hydrothermal method and characterized by using X-ray diffraction (XRD), nitrogen sorption isotherm (BET), Fourier transform infrared spectroscopy (FT-IR), inductively coupled plasma -atomic emission spectroscopy (ICP-AES), diffuse reflectance ultraviolet visible spectroscopy (DRS-UV-Vis), thermogravimetric analysis (TGA), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) methods. It appeared that stable cerium ions were inserted into the silica framework of KIT-6, thus generating acid properties in their host materials. The catalytic activity of Ce-KIT-6 materials was evaluated in the vapor phase dehydration of cyclohexanol to cyclohexene and dicyclohexyl ether at different temperatures with various Si/Ce molar ratios. Ce-KIT-6 (25) showed higher activity with 54% cyclohexanol conversion and 64% selectivity to cyclohexene. The catalytic results indicated that Ce-KIT-6 mesoporous materials could be used as versatile and stable acid catalysts. | Azhagapillai Prabhu Ahmed Al Shoaibi Chandrasekar Srinivasakannan Muthaiahpillai Palanichamy Velayutham Murugesan | 2013 | Journal of Rare Earths2013，31，5： | 3 |
| 5 | Antioxidant activity of Caesalpinia digyna root显示文摘 | R. Srinivasan M.J.N. Chandrasekar M.J. Nanjan B. Suresh | 2007 | Journal of Ethnopharmacology2007，，2： | 3 |
| 6 | Pathological abnormalities in splenic vasculature in non-cirrhotic portal hypertension:Its relevance in the management of portal hypertension显示文摘BACKGROUND Portal hypertension(PH)is associated with changes in vascular structure and function of the portosplenomesenteric system(PSMS).This is referred to as portal hypertensive vasculopathy.Pathological abnormalities of PSMS has been described in the literature for cirrhotic patients.Raised portal pressure and hyperdynamic circulation are thought to be the underlying cause of this vasculopathy.In view of this,it is expected that pathological changes in splenic and portal vein similar to those reported in cirrhotic patients with PH may also be present in patients with non-cirrhotic PH(NCPH).AIM To investigate pathological abnormalities of splenic vein in patients with NCPH,and suggest its possible implications in the management of PH.METHODS A prospective observational study was performed on 116 patients with NCPH[Extrahepatic portal vein obstruction(EHPVO):53 and non-cirrhotic portal fibrosis(NCPF):63]who underwent proximal splenorenal shunt(PSRS),interposition shunt or splenectomy with devascularization in JIPMER,Pondicherry,India,a tertiary level referral center,between 2011-2016.All patients were evaluated by Doppler study of PSMS,computed tomography portovenogram and upper gastrointestinal endoscopy.An acoustic resonance forced impulse(ARFI)scan and abdomen ultrasound were done for all cases to exclude cirrhosis.Intraoperative and histopathological assessment of the harvested splenic vein was performed in all.The study group was divided into delayed and early presentation based on the median duration of symptoms(i.e.108 mo).RESULTS The study group comprising of 116 patients[77(66%)females and 39(34%)males]with NCPH had a median age of 22 years.Median duration of symptoms was 108 mo.The most common presentation in both EHPVO and NCPF patients was upper gastrointestinal bleeding(hematemesis and melena).The ARFI scan revealed a median score of 1.2(1.0-1.8)m/s for EHPVO and 1.5(0.9-2.8)m/s for NCPF.PSRS was performed in 84 patients(two of whom underwent interposition PSRS using a 10 mm Dacron graft);splenoadrenal shunt in 9;interposition mesocaval shunt in 5;interposition 1st jejunal to caval shunt in 1 patient and devascularization with splenectomy in 17 patients.Median presplenectomy portal pressure was 25(range:15-51)mm Hg.In 77%cases,the splenic vein was abnormal upon intraoperative assessment.Under macroscopic examination,wall thickening was observed in 108(93%),venous thrombosis in 32(28%)and vein wall calcification in 27(23%)cases.Upon examination under a surgical magnification loupe,21(18%)patients had intimal defects in the splenic vein.Histopathological examination of veins was abnormal in all cases.Medial hypertrophy was noted in nearly all patients(107/116),while intimal fibrosis was seen in 30%.Ninety one percent of patients with intimal fibrosis also had venous thrombosis.Vein wall calcification was found in 22%,all of whom had intimal fibrosis and venous thrombosis.The proportion of patients with pathological abnormalities in the splenic vein were significantly greater in the delayed presentation group as compared to the early presentation group.CONCLUSION Pathological changes in the splenic vein similar to those in cirrhotic patients with PH are noted in NCPH.We recommend that PH in NCPH be treated as systemic and pulmonary hypertension equivalent in the gastrointestinal tract,and that early aggressive therapy be initiated to reduce portal pressure and hemodynamic stress to avoid potential lethal effects. | Shahana Gupta Biju Pottakkat Surendra Kumar Verma Raja Kalayarasan Sandip Chandrasekar A Ajith Ananthakrishna Pillai | 2020 | World Journal of Gastrointestinal Surgery2020，12，1： | 3 |
| 7 | 基于预测的双线偏振天气雷达数据无损压缩算法显示文摘随着双线偏振天气雷达技术的发展,雷达提供的探测参量越来越多,数据精度不断提高。探测性能提升使得天气雷达数据量急剧增长,数据存储和传输是雷达网络化应用中需要解决的重要问题。数据压缩算法用于减小传输和存储的数据量,但通用的数据压缩算法并未充分考虑双线偏振天气雷达数据的特点。文中提出适用于双线偏振天气雷达数据压缩算法(DPRC),使用径向预测减小天气雷达数据相关性,实现了天气雷达基数据的高效无损压缩。使用CSU-CHILL雷达数据和双线偏振改造后的CINRAD SA雷达对DPRC的算法性能进行评估,试验结果表明,DPRC较通用的压缩算法压缩率更高,适用于高分辨率双线偏振雷达数据无损压缩。 | 曾强宇 V Chandrasekar 何建新 史朝 王皓 李学华 | 2019 | 气象学报2019，77，2： | 3 |
| 8 | Secondary metabolite credentials ofEvolvulus alsinoides by high performance thin layer chromatography(HPTLC)显示文摘Plants and plant-based products are the bases of many modern pharmaceuticals that are current in use today for various diseases.The aim of the study was to investigate the biochemical constituents and high performance thin layer chromatography(HPTLC) finger printing of the ethanolic extract of Evolvulus alsinoides.Phytochemical screening was done by standard procedures and HPTLC method was also established to analyze alkaloids,flavonoids and phenolic compounds from the ethanolic extract of Evolvulus alsinoides.Preliminary phytochemical screening showed that ethanol extracted more secondary metabolites than other solvents.HPTLC fingerprinting analysis showed the presence of various alkaloids,flavonoids and phenols(quercetin) in the ethanolic extract.It can be concluded that Evolvulus alsinoides may serve as a source of potent antioxidants that may be used in the prevention of various diseases such as cancer,diabetes and cardiovascular diseases due to the presence of phenolic compounds.HPTLC finger print of Evolvulus alsinoides may be useful in the differentiation of the species from adulterants and act as a biochemical marker for this medicinally important plant in the pharmaceutical industry and plant systematic studies. | Duraisamy Gomathi Manokaran Kalaiselvi Ganesan Ravikumar Dominic Sophia Velliyur Kanniappan Gopalakrishnan Chandrasekar Uma | 2012 | The Journal of Biomedical Research2012，26，4： | 2 |
| 9 | β-Adrenergic Blockade in Developing Heart Failure: Effects on Myocardial Inflammatory Cytokines, Nitric Oxide, and Remodeling显示文摘 | Sumanth D. Prabhu Bysani Chandrasekar David R. Murray Gregory L. Freeman | 2000 | Circulation: Journal of the American Heart Association2000，，17： | 2 |
| 10 | Radical prostatectomy in patients aged 75 years or older:review of the literature显示文摘Given the demographic trends toward a considerably longer life expectancy,the percentage of elderly patients with prostate cancer will increase further in the upcoming decades.Therefore,the question arises,should patients ≥75 years old be offered radical prostatectomy and under which circumstances? For treatment decision-making,life expectancy is more important than biological age.As a result,a patient's health and mental status has to be determined and radical treatment should only be offered to those who are fit.As perioperative morbidity and mortality in these patients is increased relative to younger patients,patient selection according to comorbidities is a key issue that needs to be addressed.It is known from the literature that elderly men show notably worse tumor characteristics,leading to worse oncologic outcomes after treatment.Moreover,elderly patients also demonstrate worse postoperative recovery of continence and erectile function.As the absolute rates of both oncological and functional outcomes are still very reasonable in patients ≥75 years,a radical prostatectomy can be offered to highly selected and healthy elderly patients. Nevertheless,patients clearly need to be informed about the worse outcomes and higher perioperative risks compared to younger patients. | Philipp Mandel Thenappan Chandrasekar Felix K Chun Hartwig Huland Derya Tilki | 2019 | Asian Journal of Andrology2019，21，1： | 2 |
| 11 | β2 adrenergic activation induces the expression of IL-18 binding protein, a potent inhibitor of isoproterenol induced cardiomyocyte hypertrophy in vitro and myocardial hypertrophy in vivo显示文摘 | David R. Murray Srinivas Mummidi Anthony J. Valente Tadashi Yoshida Naveen K. Somanna Patrice Delafontaine Charles A. Dinarello Bysani Chandrasekar | 2011 | Journal of Molecular and Cellular Cardiology2011，，1： | 2 |
| 12 | Determination of Heat Transport Mechanism in Aqueous Nanofluids Using Regime Diagram显示文摘我们提供一个近似方法在水的 nanofluids 决定为热电导率的异常改进负责的主导的热运输机制。由于随意的一个大学位并且散布在出版试验性的数据观察了,限制到热电导率是的 nanofluid 由考虑粒子 Brownian 运动的贡献并且聚类的固定经分解,和一张政体图被开发。从独立出版来源的一个范围的试验性的数据被用于发达政体图的确认。 | M. CHANDRASEKAR S. SURESH | 2009 | Chinese Physics Letters2009，26，12： | 2 |
| 13 | Fractalkine (CX3CLI) stimulated by nuclear factor kappaB (NF-kappaB)-dependent inflammatory signal induces aortic smooth muscle cell proliferation through an autocrine pathway 显示文摘 | Chandrasekar B Mummidi S Perla R P | 2003 | Biochem J2003，373，2： | 1 |
| 14 | CXCL16 signals via Gi,phosphatidylinositol 3-kinase,Akt,IB kinase,and nuclear factor-B and induces cell-cell adhesion and aortic smooth muscle cell proliferation显示文摘 | Chandrasekar B Bysani S Mummidi S | 2004 | J Biol Chem2004，279，5： | 1 |
| 15 | Coronary artery endothelia protection after local delivery of 17β estradiol during balloon angioplasty in porcine model: a potential new pharmacologic approach to improve endothelial function 显示文摘 | Chandrasekar B Nattel S Tanguay JF | 2001 | J Am Coll Cardiol2001，38，5： | 1 |
| 16 | Interleukin-18-induced Human Coronary artery smooth muscle cell migration is dependent on NF-κB- and AP-1-mediated matrix metalloproteinase-9 expression and is inhibited by atorvastatin显示文摘 | Chandrasekar B Mummidi S Mahimainathan L | 2006 | J Biol Chem2006，281，15： | 1 |
| 17 | The clinical spectrum of pul-monary aspergillosis显示文摘 | Soubani AO Chandrasekar PH | 2002 | Chest2002，121，6： | 1 |
| 18 | Interleu- kin-18-induced human coronary artery smooth muscle cell mi- gration is dependent on c-fos and AP-l-mediated matrix metal- loproteinase-9 expression and is inhibited by atorvastatin 显示文摘 | Chandrasekar B Mummidi S Mahimainathan L | 2006 | J Biol Chem2006，281，15： | 1 |
| 19 | Spatial analysis of trace element contamination in sediments of Tamir- aparani estuary, southeast coast of India 显示文摘 | MAGESH N S CHANDRASEKAR N VETHA ROY D | 2011 | Estuarine Coastal and Shelf Science2011，92，4： | 1 |
| 20 | Motivational cultural intelligence,realistic job previews,and realistic living conditions preview,and cross-cultural adjustment显示文摘 | TEMPLER K J TAY C CHANDRASEKAR N A | | 0，，31： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员