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| 1 | Early results of circularity and centration of capsulotomy prepared by three different methods显示文摘AIM:To compare the difference of capsulotomy produced by precision pulse capsulotomy(PPC),manual(M-CCC),and femtosecond laser assisted capsulotomy(FLAC)in relation to intraocular lens(IOL)centration,circularity and its effect on visual outcomes.METHODS:Prospective,non-randomized comparative study conducted at LV Prasad Eye Institute,Hyderabad,India.Sixty eyes of 52 patients were grouped into 3(FLAC,PPC and M-CCC)based on capsulotomy techniques used.Twenty consecutive eyes with uneventful phacoemulsification and with no comorbidities affecting the capsulotomy or visual outcome were included in each group.The main outcome measure was IOL centration in relation to capsulotomy and pupil.Secondary outcome measures were post-operative visual acuity,manifest refraction and aberration profile between groups.RESULTS:At 5 wk the visual,refractive outcomes and endothelial cell density were comparable between the 3 groups.The median circularity index of FLAC was statistically significantly different to M-CCC or PPC(1-10)groups(P<0.01)but PPC(11-20)was comparable to FLAC.Decentration of IOL center in relation to capsulotomy was seen only between the PPC(1-10)group and FLAC group(P=0.02).The IOL was well centered in relation to the pupil in all the groups(P=0.46).The quality of vision parameters like the higher order aberrations,spherical aberration,coma,trefoil,modular transfer function,and Strehl ratio were comparable between the groups.CONCLUSION:Our study shows that despite differences in the morphology of capsulotomy produced by PPC,M-CCC,FLAC a well-centered IOL can be achieved.The measured capsular morphology parameters do not affect visual outcomes. | Jagadesh C.Reddy Soumya Devta Kiran Kumar Vupparaboina Mohammad Hasnat Ali Pravin K.Vaddavalli | 2021 | International Journal of Ophthalmology(English edition)2021，14，1： | 4 |
| 2 | Effect of Low Level Subchronic Microwave Radiation on Rat Brain显示文摘Objective The present study was designed to investigate the effects of subchronic low level microwave radiation(MWR) on cognitive function,heat shock protein 70(HSP70) level and DNA damage in brain of Fischer rats.Methods Experiments were performed on male Fischer rats exposed to microwave radiation for 90 days at three different frequencies: 900,1800,and 2450 MHz.Animals were divided into 4 groups: Group I: Sham exposed,Group II: animals exposed to microwave radiation at 900 MHz and specific absorption rate(SAR) 5.953 × 10-4 W/kg,Group III: animals exposed to 1800 MHz at SAR 5.835 × 10-4 W/kg and Group IV: animals exposed to 2450 MHz at SAR 6.672 × 10-4 W/kg.All the animals were tested for cognitive function using elevated plus maze and Morris water maze at the end of the exposure period and subsequently sacrificed to collect brain tissues.HSP70 levels were estimated by ELISA and DNA damage was assessed using alkaline comet assay.Results Microwave exposure at 900-2450 MHz with SAR values as mentioned above lead to decline in cognitive function,increase in HSP70 level and DNA damage in brain.Conclusion The results of the present study suggest that low level microwave exposure at frequencies 900,1800,and 2450 MHz may lead to hazardous effects on brain. | Pravin Suryakantrao Deshmukh Kanu Megha Namita Nasare Basu Dev Banerjee Rafat Sultana Ahmed Mahesh Pandurang Abegaonkar Ashok Kumar Tripathi Pramod Kumari Mediratta | 2016 | Biomedical and Environmental Sciences2016，29，12： | 4 |
| 3 | Optimal site selection for a hospital using a fuzzy extended ELECTRE approach显示文摘About two thirds of the population in India lives in villages.There is an acute shortage of health centers in rural areas.Hospitals are not located uniformly across different regions of country.Rural areas are also not well connected with cities due to a lack of infrastructure.Therefore,the demand for super specialty hospitals is greater in rural areas.This paper has analyzed the health requirement in a prominent Indian state,Bihar,in terms of population density.The purpose of this study is to illustrate the hospital site-selection problem by using the fuzzy extended elimination and choice expressing reality(ELECTRE)approach.Different attributes considered for site selection in this paper are cost,proximity,population characteristics,availability of human resources,accessibility,environment,etc.The findings of the study will be of great value to the health ministry and policy makers in taking judicious decision s while selecting the site for a new hospital or health center. | Pravin Kumar Rajesh Kumar Singh Prerna Sinha | 2016 | Journal of Management Analytics2016，3，2： | 2 |
| 4 | Recent developments in self-powered smart chemical sensors for wearable electronics显示文摘The next generation of electronics technology is purely going to be based on wearable sensing systems. Wearable electronic sensors that can operate in a continuous and sustainable manner without the need of an external power sources, are essential for portable and mobile electronic applications. In this review article, the recent progress and advantages of wearable self-powered smart chemical sensors systems for wearable electronics are presented. An overview of various modes of energy conversion and storage technologies for self-powered devices is provided. Self-powered chemical sensors (SPCS) systems with integrated energy units are then discussed, separated as solar cell-based SPCS, triboelectric nano-generators based SPCS, piezoelectric nano-generators based SPCS, energy storage device based SPCS, and thermal energy-based SPCS. Finally, the outlook on future prospects of wearable chemical sensors in self-powered sensing systems is addressed. | Aaryashree Surjit Sahoo Pravin Walke Saroj Kumar Nayak Chandra Sekhar Rout Dattatray J.Late | 2021 | Nano Research2021，14，11： | 2 |
| 5 | Amine loaded zeolites for carbon dioxide capture: Amine loading and adsorption studies显示文摘 | Ravikrishna Chatti Amit K. Bansiwal Jayashri A. Thote Vivek Kumar Pravin Jadhav Satish K. Lokhande Rajesh B. Biniwale Nitin K. Labhsetwar Sadhana S. Rayalu | 2009 | Microporous and Mesoporous Materials2009，，1： | 2 |
| 6 | Efficiency measurement of fertilizer-manufacturing organizations usingFuzzy data envelopment analysis显示文摘The aim of the paper is to benchmark the performance of the Indian fertilizermanufacturing organizations based on the ranking of efficiencies using a fuzzy data envelopment analysis(FDEA).FDEA has been used to find the relative efficiency and ranking of the fertilizer-manufacturing organizations.The last few years’data have been converted into the fuzzy inputs and outputs as minimum,mean,and maximum values,respectively.The performance of the fertilizer manufacturing organizations is based on the output maximization model of DEA.The frontier organizations set the benchmark for the lagging organizations for further improvement in the performance.This method can also be used to incorporate the data of the several years for multiple inputs and outputs instead of consideration of data of only one year.The proposed approach in this study may help organizations to improve its efficiency to fulfill its goal. | Pravin Kumara Rajesh Kumar Singh Ravi Shankar | 2017 | Journal of Management Analytics2017，4，3： | 1 |
| 7 | mpaired flow-mediated vasodilatation in Asian Indians with erectile dysfunction显示文摘Endothelial 机能障碍是在冠的动脉疾病(CAD ) 和可勃起的机能障碍(编辑) 之间的要求的连接。臂的动脉调停流动的 vasodilatation (FMD ) 是为 endothelial 功能评价的一个非侵略的代理人标记。尽管有代表可观的全球 CAD 负担的亚洲印第安人,在这些病人的 FMD 和编辑上的数据正在缺乏。经历冠的 angiography 的 225 个病人, 72 %有的编辑(使用可勃起的功能(IIEF-5 ) 问询表的国际索引估计) ;编辑对中等在 61 % 严重;病人。编辑病人有严重、弥漫的 angiographic CAD,包含的很多冠的容器和更低的吝啬的臂的动脉 FMD 的更高的发生(6.40 % ± 4.60 %对 9.10 % ± 4.87 %, P< 0.001 ) 与 non-ED 病人相比。在 FMD 的进步减小与增加编辑的严厉被注意损害 FMD (≤ 5.5 %) 两次在编辑病人同样普通(52 %对 24 %没有编辑) 。有损害 FMD 的病人有更高的编辑流行(85 %对 62 %) 并且更低的吝啬的 IIEF-5 与正常 FMD 与那些相比得分。损害 FMD 是另外的风险因素的一个重要编辑预言者独立人士(机会比率, 2.33;95 %信心间隔:0.59-9.23;P=0.03 ) 。在 FMD 和编辑严厉之间的反的关联被观察(r=− 0.22;P=0.004 ) 。编辑在有 angiographically 记录的 CAD 的亚洲印第安人之中是普通的。有编辑的病人损害了独立于另外的风险因素的 FMD,建议那个 endothelial 机能障碍是内在的 pathophysiology。泌尿科医师和心脏病专家需要知道在编辑, CAD 和 endothelial 机能障碍之间的协会。 | Tanuj Bhatia Aditya Kapoor Jatinder Kumar Archana Sinha Priyadarshi Ranjan Sudeep Kumar Naveen Garg Satyendra-Tewari Aneesh Srivastava Rakesh Kapoor Pravin K Goel | 2013 | Asian Journal of Andrology2013，15，5： | 1 |
| 8 | KOH-based porous carbon from date palm seed:Preparation,characterization,and application to phenol adsorption显示文摘 | Suresh Kumar Reddy K Kannan Pravin Al Shoaibi Ahmed | 2014 | Water Science and Technology2014，70，10： | 1 |
| 9 | Determination of hydrogen diffusivity in austenitic stainless steels by subscale microhardness profiling 显示文摘 | Pravin Kumar Balasubramaniam R | 1997 | Journal of Alloys and Compounds1997，255，： | 1 |
| 10 | Engineering the size of dark core of an optical vortex 显示文摘 | Ashok Kumar Pravin Vaity Yedhu Krishna | 2010 | Optics and Lasers in Engineering2010，48，： | 1 |
| 11 | Intracranial meningeal hemangiopericytoma: 10?years experience of a tertiary care Institute显示文摘 | Narendra Kumar Ritesh Kumar Rakesh Kapoor Sushmita Ghoshal Pramod Kumar Pravin Salunke B. Radotra Suresh Sharma | 2012 | Acta Neurochirurgica2012，，9： | 1 |
| 12 | In silico approach of azadirachtin binding with actins显示文摘 | PRAVIN KUMAR R MANOJ M N KUSH A | 2007 | Insect Biochemistry and Molecular Biology2007，37，6： | 1 |
| 13 | Evaluation of Central Corneal Thickness Measurement With RTVue Spectral Domain Optical Coherence Tomography in Normal Subjects显示文摘 | Harsha Laxmana Rao Addepalli Uday Kumar Anjul Kumar Swathi Chary Sirisha Senthil Pravin Krishna Vaddavalli Chandra Sekhar Garudadri | 2011 | Cornea2011，，2： | 1 |
| 14 | Evaluation of 1-Chloroacetophenone (CN) and Dibenz (b, f)-1, 4 oxazepine (CR) Induced Respiratory Tract Sensory Irritation Following a Simple Inhalation Exposure Method in Mice显示文摘Sensory irritation of the upper respiratory tract was induced in mice by inhalation of vapors, generated under thermal stress of two tear gases viz. 1-chloroacetophenone (CN) and dibenz (b, f)-1, 4 oxazepine (CR) following a simple exposure technique. A known quantity of the irritant was kept in an adapter fitted with glass exposure chamber, heated, and the vapor thus generated was purged into the chamber. The restrained mouse inhaled the vapor, and the resultant depression of respiratory rate was recorded on a polygraph. Fifty percent depression of the respiration rate and the corresponding air concentration of the irritant was determined by obtaining the linear curve fitting equation and putting the value of Y=50. It was concluded that inhalation of CR vapor was 2. 66 times more irritating than that of CN in mice. The employed exposure method also proved to be simple, sensitive, easy t0 operate,and may also prove useful in evaluating irritation of upper respiratory tract fOllowing the inhalation of vapors of various chemicals. | PRAVIN KUMAR AND A. S. SACHAN(Division of Pharmacology and Toxicology, Defence Research and Development Establishment, Jhansi Road,Gwalior-474002, India)(To whom all correspondence should be addressed.) | 1998 | Biomedical and Environmental Sciences1998，11，2： | 0 |
| 15 | Seismic safety evaluation methodology for masonry building and retrofitting using splint and bandage technique with wire mesh显示文摘The paper presents a seismic safety assessment of unreinforced masonry(URM)building using two approaches.The first approach uses the‘Pier Analysis’method,based on the concept of equivalent lateral stiffness,where in-plane and out-of-plane actions are considered independently.The second approach is developed with the program SAP2000,where the linear response is evaluated using continuum‘finite element modelling’(FEM).Both methods are compared to evaluate the safety of wall piers and the differences in the outcomes under combined gravitational and lateral seismic forces.The analysis results showed that few wall elements are unsafe in in-plane and out-of-plane tension.It is also observed that the pier analysis method is conservative compared to FEM,but can be used as a simplified and quick tool in design offices for safety assessment,with reasonable accuracy.To safeguard the URM wall piers under lateral loads,a retrofitting technique is adopted by providing vertical and horizontal belts called splints and bandages,respectively,using welded wire mesh(WWM)reinforcement.The study using the‘Pier Analysis’shows that the lateral load capacity of unsafe URM piers can be enhanced up to 3.67 times and made safe using the applied retrofitting technique.Further,the retrofitting design methodology and recommendations for application procedures to on-site URM buildings are discussed in detail. | Pravin Kumar Venkat Rao PADALU Yogendra SINGH | 2022 | Frontiers of Structural and Civil Engineering2022，16，4： | 0 |
| 16 | Epidemiological perspective of drug resistant extrapulmonary tuberculosis显示文摘Tuberculosis(TB) remains one of the leading infectious diseases causing significant morbidity and mortality worldwide. Although, pulmonary TB is the most common presentation and is the main transmissible form of the disease, extrapulmonary TBalso significantly contributes to the burden of disease and can cause severe complications and disabilities. At present, the most serious issue with TB control programme is emergence of multi and extensively drug resistant Mycobacterium tuberculosis strain worldwide. As the number of drug resistant pulmonary TB is increasing around the world, the number of drug resistant TB with extrapulmonary manifestations are also on rise. However, there is surprisingly scant information in medical literatures on prevalence and impact of extrapulmonary drug-resistant TB. Here, we appraise the recent epidemiological studies that underpin the status and impact of drug resistance in TB cases with extrapulmonary manifestations. | Pravin Kumar Singh Amita Jain | 2015 | World Journal of Clinical Infectious Diseases2015，5，4： | 0 |
| 17 | Changes in post-keratoplasty astigmatism after suture removal:refraction vs tomography vs aberrometry显示文摘AIM:To analyse the changes in magnitude and orientation of astigmatism after suture removal(SR)in keratoplasty eyes as measured by refraction,tomography,and aberrometry.METHODS:Twenty-six eyes of 25 patients after optical keratoplasty requiring SR to reduce the astigmatism during the follow-up period were prospectively included.Eyes with poor quality topography scans or if there were no sutures in the steepest semi meridian were excluded.Corrected distance visual acuity(CDVA),manifest refraction,corneal tomography and aberrometr y were per formed on all patients before and after SR.RESULTS:The mean age of the patients was 40.8±14.4 y.Penetrating keratoplasty was performed in 23 eyes(89%)and deep anterior lamellar keratoplasty was done in 3 eyes(11%).There was a statistically significant reduction in the magnitude of refractive,tomographic and aberrometry astigmatism after SR(P<0.001)at 2 h after suture removal.The mean net reduction of the astigmatism was greater as measured by corneal tomography compared to refractive astigmatism(P<0.05).There was no statistically significant change in refractive astigmatism between 2 h and 2 mo after SR(P=0.55).Vector calculations demonstrated a greater amount of undercorrection in the tomography group and the rotational error was more towards counterclockwise direction.Mean monocular log MAR CDVA improved from 0.57 D to 0.49 D after SR(P=0.002).CONCLUSION:The net reduction in the magnitude of astigmatism after SR is greater in the tomography and aberrometry groups.With one episode of SR,there is no difference in the aberration profile. | Suraj Kumar Chaurasiya Jagadesh C.Reddy Pravin K.Vaddavalli Christopher J.Rapuano | 2021 | International Journal of Ophthalmology(English edition)2021，14，11： | 0 |
| 18 | Measurement Analysis in Electrochemical Discharge Machining (ECDM) Process: A Literature Review显示文摘 | Pravin Pawar Raj Ballav Amaresh Kumar | 2015 | Journal of Chemistry and Chemical Engineering2015，9，2： | 0 |
| 19 | Altered Host Resistance to Listeria monocytogenes In Mice Exposed to 1-Chloroacetophenone (CN) Vapours显示文摘Short term repeated exposure of 1-chloroacetophenone(CN)vapours at a concentration of 0.153mg per litre for 15 minutes daily on 10 consecuitve days in Swiss albino male mice resulted in increased mortality to Listeria monocytogenes.Significantly elevated bacterial growth was observed in the spleen and liver of the CN exposed animals.The increasd bacterial count in these organs was evident within 4-6 days post challenge as compared to vehicle exposed infected and unexposed infected animals.Increased susceptibility of infection has been considered to be the function of immune alteration due to cumulative short term effects of Cn vapour inhalation.This may be attributed to immunotoxic effects of Cn on Tcells mediated macrophage functions. | PRADEEP KUMAR PRAVIN KUMAR K.ZACHARIAH G.P.RAI R.VIJAYRAGHAVAN | 1992 | Biomedical and Environmental Sciences1992，5，2： | 0 |
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