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Blue-Shift and Enhanced Photoluminescence in BaMgAl10O17:Eu2+ Nanophosphor under VUV Excitation for PDPs Application

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Materials Sciences and Applications 2010年第1期1卷 25-31页

作者： Raghvendra Singh Yadav shiv kumar Pandey Avinash Chandra Pandey 不详

In this report, five systems of varied diameters viz. 62 nm, 85 nm, 115 nm, 160 nm and 450 nm of BaMgAl10O17:Eu2+ nanorods are prepared by solution combustion approach and with annealing at different temperature in reduced atmosphere (N2 + H2). An intense broad blue photoluminescence (PL), corresponding to the electronic transition of Eu2+ from the 4f 6 5d excited state to the 4f 7 ground state, is observed. The blue-shift and enhanced photoluminescence is also observed, and found to be highly dependent on the size of diameter of BaMgAl10O17:Eu2+ nanostructures. The change in decay time and color-coordinates with change in size of diameter of BaMgAl10O17:Eu2+ nanostructure have been analysed and thoroughly discussed.

关键词： Quantum Confinement Effect Nanophosphor PDPs

COVID-19 in Liver Transplant Recipients-A Series with Successful Recovery

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Journal of Clinical and Translational Hepatology 2020年第4期8卷 467-473页

作者： Ashok Choudhury Golamari Srinivasa Reddy Shantan Venishetty Viniyendra Pamecha Saggere Muralikrishna Shasthry Arvind Tomar Lalita Gauri Mitra Venkata Siva Tez Prasad Rajendra Prasad Mathur Debajyoti Bhattacharya shiv kumar Sarin Department of Hepatology and Liver Transplant Institute of Liver and Biliary SciencesNew DelhiIndia Department of HPB Surgery and Liver Transplant Institute of Liver and Biliary SciencesNew DelhiIndia Department of Pulmonary Medicine Institute of Liver and Biliary SciencesNew DelhiIndia Department of Critical Care Medicine Institute of Liver and Biliary SciencesNew DelhiIndia Department of Nephrology Institute of Liver and Biliary SciencesNew DelhiIndia

The severe acute respiratory syndrome corona virus-2 (referred to as SARS-CoV-2) pandemic had a great impact on public life in general as well as on populations with pre-existing disease and co-morbidities. Liver transplant and immunosuppressant medication predisposes to more severe disease and is often associated with poor outcome. The clinical features, disease course, treatment and process of modulating the immunosuppression is challenging. Here, we describe the clinical presentation, treatment and outcomes in six liver transplant recipients. Out of those six patients, three had mild, one had moderate and one had severe COVID-19, and one was asymptomatic. The immunosup-pression minimization or withdrawal was done based upon the clinical severity. Consideration of tocilizumab and/or convalescent plasma as well as antivirals i.e. remdesvir done in severe cases. The routine practice of prophylactic anti-coagulation, consideration of repurposed drugs (i.e. teico-planin and doxycycline), and watchful monitoring of asymptomatic recipients helped to achieve an uneventful recovery.

关键词： Liver transplant COVID-19 SARS-CoV-2 Liver injury Remdesivir Convalescent plasma

基于临床路径的教学方法在小儿呼吸内科临床带教中的体会

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重庆医学 2011年第32期40卷 3324-3325页

作者：田代印何云锋 shiv kumar Yadav 重庆医科大学附属儿童医院呼吸内科 400014 重庆医科大学附属第一医院泌尿外科 400016 重庆医科大学 400016

临床路径的推广和应用在国内大型教学医院已经逐步开展和实施,医疗工作以后将逐步以临床路径作为工作的指导,随着各种疾病临床路径的形成,在以后的工作中临床工作者将以临床路径作为诊治疾病的基础,因此,加强医学生对临床路径的熟悉和掌... 详细信息

临床路径的推广和应用在国内大型教学医院已经逐步开展和实施,医疗工作以后将逐步以临床路径作为工作的指导,随着各种疾病临床路径的形成,在以后的工作中临床工作者将以临床路径作为诊治疾病的基础,因此,加强医学生对临床路径的熟悉和掌握,不但有利于临床路径的推广和应用,同时对学生掌握专业知识也有一定的帮助,

关键词：临床路径内科临床带教教学方法呼吸小儿临床工作者教学医院医疗工作

Appendicular tuberculosis presenting as enterocutaneous fistula over thigh—A rare case report with review of literature

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Journal of Tuberculosis Research 2013年第3期1卷 37-39页

作者： Vaibhav Pandey Ajay Narayan Gangopadhyay shiv Prasad Sharma Vijayndar kumar Department of Paediatric Surgery Institute of Medical Sciences Banaras Hindu University Varanasi India

Abdominal tuberculosis is a significant cause of morbidity and mortality in children in developing countries. Primary involvement of appendix is very rare. Presentation is usually non specific and diagnosis is made in most cases on histopathlogical examination following appendicectomy. This to our knowledge is the first case of appendicular tuberculosis presenting primarily as spontaneous enterocutaneous fistula over front of right thigh. Barium meal follow-through was diagnostic. Appendicectomy was performed followed by anti-tubercular treatment which was curative.

关键词： Tubercular Appendicitis Abdominal Tuberculosis Enterocutaneous Fistula

Ivabradine—The Final Crusader for Postoperative Junctional Ectopic Tachycardia, a Case Report with Literature Review

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World Journal of Cardiovascular Surgery 2019年第8期9卷 73-82页

作者： Manoj kumar Sahu Harsha Vardhan Niraghatam Nikhil Bansal Sarvesh Pal Singh Palleti Rajashekar shiv kumar Choudhary Department of Cardiothoracic and Vascular Surgery CN Centre All India Institute of Medical Sciences New Delhi India

Background: Junctional ectopic tachycardia (JET) is one troublesome supraventricular arrhythmia in postoperative pediatric cardiac surgical patients. Unless treated timely and effectively it may lead to morbidity and even mortality. Aim: To understand the role of Ivabradine in the treatment of JET in postoperative pediatric cardiac surgical patients. Case: We present a postoperative case of complete repair of Tetralogy of Fallot who was in normal sinus rhythm in the preoperative period and developed JET 4 hours later in postoperative period which was persistent despite measures to optimize the internal milieu of the body and conventional antiarrhythmics, that was successfully treated with Ivabradine at a dose of 0.05 mg/kg/12 hourly. Conclusion: Ivabradine can be used to successfully treat postoperative JET in cases ofrefractory to other antiarrhythmic drugs like Digoxin and Amiodarone.

关键词： Tetralogy of Fallot Junctional Ectopic Tachycardia Ivabradine

Gangrenous Amyand’s hernia in neonate: A great clinical masquerader

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Open Journal of Pediatrics 2013年第4期3卷 364-365页

作者： Vaibhav Pandey Ajar Narayan Gangopadhyay Dinesh kumar Gupta shiv Prasad Sharma Department of Paediatric Surgery Institute of Medical Sciences Banaras Hindu University Varanasi India

Amyand’s hernia [AH] is a rare condition with presence of vermiform appendix in an inguinal hernia sac [1]. It is a rare entity with very difficult preoperative diagnosis that does not affect management. We herein report a neonatal gangrenous AH masking all features of underlying bowel gangrene. In neonates, a great masquerader can mask all the features of underlying bowel gangrene and delay in diagnosis can be detrimental in context of outcome. A high index of suspicion of Amyand’s hernia with gangrene should be kept even if child presents with irreducible hernia without features of strangulation to prevent avoidable increase in morbidity and mortality.

关键词： Hernia Gangrenous Appendix Strangulation Inguinal Appendicitis

Competition between axial anomaly and ferromagnetic ordering in Bi_(2-x)Fe_(x)Se_(3-x)S_(x) topological insulator:A study of magnetic and magnetotransport properties

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Journal of Materiomics 2022年第3期8卷 669-677页

作者： Rahul Singh shiv kumar A.Jain Mahima Singh Labanya Ghosh A.Singh Soma Banik A.Lakhani S.Patil E.F.Schwier K.Shimada S.M.Yusuf Sandip Chatterjee Solid State Physics Division Bhabha Atomic Research CenterTrombayMumbai400085India Hiroshima Synchrotron Radiation Center HiroshimaJapan Homi Bhabha National Institute AnushaktinagarMumbai400094India Department of Physics Indian Institute of Technology(BHU)Varanasi221005India Synchrotrons Utilization Section Raja Ramanna Centre for Advanced TechnologyIndore452013India UGC-DAE Consortium for Scientific Research IndoreMadhya Pradesh452017India Department of CMP&MS Tata Institute of Fundamental ResearchMumbai400005India

The topological insulators Bi_(2-x)Fe_(x)Se_(3-x)S_(x) have been investigated by the dc-magnetization,magnetotransport and angle resolved photoemission spectroscopy(ARPES)*** doping of Fe and S,a negative giant magneto-resistance(MR)is observed for parallel electric and magnetic fields(H||E).The MR behavior at lower magnetic field can be explained with the semi-classical theory whereas the MR behavior at higher field has been attributed to the axial ***,the system reached to the quantum limit at low magnetic field(~4.5T).The magnetic ordering can be explained with the presence of both the RKKY(surface)and van-Vleck(bulk)*** ARPES study reveals that a surface gap is suppressed when the magnetic ordering changes from ferromagnetic to anti-ferromagnetic *** ARPES study and the appearance of quantum oscillations(SdH)in the resistivity pattern reveal that the topological surface property is preserved with the co-doping of Fe and S.

关键词： Spintronics Magnetoresistance Magnetism Topological insulators RKKY interaction ARPES study

单壁纳米碳管联合吡柔比星对膀胱肿瘤抑制效应研究

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重庆医学 2012年第21期41卷 2134-2135,2138页

作者：易正金陈刚张尧 shiv kumar Yadav 何云锋攀枝花钢铁公司职工总医院泌尿外科四川攀枝花617023 重庆医科大学附属第一医院泌尿外科 400016 重庆医科大学 400016

目的探讨修饰的单壁纳米碳管联合吡柔比星(SWNT-THP)复合物对膀胱肿瘤抑制效应。方法用磷酸支链乙二醇修饰单壁纳米碳管,构建SWNT-THP复合物。通过流式细胞术探讨SWNT-THP复合物对膀胱癌细胞株(BIU-87细胞)抑制作用,同时研究该复合物对... 详细信息

目的探讨修饰的单壁纳米碳管联合吡柔比星(SWNT-THP)复合物对膀胱肿瘤抑制效应。方法用磷酸支链乙二醇修饰单壁纳米碳管,构建SWNT-THP复合物。通过流式细胞术探讨SWNT-THP复合物对膀胱癌细胞株(BIU-87细胞)抑制作用,同时研究该复合物对膀胱肿瘤的治疗效果及不良反应。结果 SWNT-THP复合物能够有效地增强THP的抗肿瘤效应(P<0.05)。同时能有效减少THP的不良反应。结论 SWNT为基础的药物载体能够有效提高化疗药物的治疗效果,减少不良反应。在膀胱肿瘤靶向药物输送中将发挥重要的作用。

关键词：单壁纳米碳管吡柔比星膀胱肿瘤肿瘤抑制

Quantum Entanglement in Coupled Lossy Waveguides Using SU(2) and SU(1, 1) Thermo-Algebras

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Journal of Modern Physics 2015年第11期6卷 1554-1571页

作者： Naveen kumar Mogurampally K. V. S. shiv Chaitanya Bindu A. Bambah School of Physics University of Hyderabad Hyderabad India Department of Physics BITS-Pilani Hyderabad Campus Hyderabad India

In this paper, the master equation for the coupled lossy waveguides is solved using the thermofield dynamics (TFD) formalism. This formalism allows the use of the underlying symmetry algebras SU(2) and SU(1, 1), associated with the Hamiltonian of the coupled lossy waveguides, to compute entanglement and decoherence as a function of time for various input states such as NOON states and thermal states.

关键词： Coupled Waveguides Thermofield Dynamics Master Equation Lie Algebras Entanglement Decoherence