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77篇 您的检索式:作者名="Kumar Avinash"
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1Phacoemulsification versus small incision cataract surgery in patients with uveitis显示文摘AIM: To compare the safety and efficacy of phacoemulsification and small incision cataract surgery(SICS) in patients with uveitic cataract.·METHODS: In a prospective, randomized multi-centric study, consecutive patients with uveitic cataract were randomized to receive phacoemulsification or manual SICS by either of two surgeons well versed with both the techniques. A minimum inflammation free period of 3mo(defined as less than 5 cells per high power field in anterior chamber) was a pre-requisite for eligibility for surgery. Superior scleral tunnel incisions were used for both techniques. Improvement in visual acuity post-operatively was the primary outcome measure and the rate of post-operative complications and surgical time were secondary outcome measures, respectively. Means of groups were compared using t-tests. One way analysis of variance(ANOVA) was used when there were more than two groups. Chi-square tests were used for proportions. Kaplan Meyer survival analysis was done and means for survival time was estimated at 95%confidence interval(CI). A P value of <0.05 was considered statistically significant.·RESULTS: One hundred and twenty-six of 139 patients(90.6%) completed the 6-month follow-up. Seven patients were lost in follow up and another six excluded due to either follow-up less than six months(n=1) or inability implant an intraocular lens(IOL) because of insufficient capsular support following posterior capsule rupture(n=5). There was significant improvement in vision after both the procedures(paired t-test; P <0.001). On first postoperative day, uncorrected distance visual acuity(UDVA) was 20/63 or better in 31(47%)patients in Phaco group and 26(43.3%) patients in SICS group(P=0.384). The mean surgically inducedastigmatism(SIA) was 0.86 ±0.34 dioptres(D) in the phacoemulsification group and 1.16 ±0.28 D in SICS group. The difference between the groups was significant(t-test, P =0.002). At 6mo, corrected distance visual acuity(CDVA) was 20/60 or better in 60(90.9%) patients in Phaco group and 53(88.3%) in the manual SICS group(P =0.478). The mean surgical time was significantly shorter in the manual SICS group(10.8±2.9 versus 13.2±2.6min)(P <0.001). Oral prednisolone, 1 mg/kg body weight was given 7d prior to surgery, continued post-operatively and tapered according to the inflammatory response over 4-6wk in patients with previously documented macular edema, recurrent uveitis, chronic anterior uveitis and intermediate uveitis. Rate of complications like macular edema(Chi-square, P =0.459),persistent uveitis(Chi-square, P =0.289) and posterior capsule opacification(Chi-square, P =0.474) were comparable between both the groups.·CONCLUSION: Manual SICS and phacoemulsification do not differ significantly in complication rates and final CDVA outcomes. However, manual SICS is significantly faster. It may be the preferred technique in settings where surgical volume is high and access to phacoemulsification is limited, such as in eye camps. It may also be the appropriate technique for uveitic cataract under such circumstances.Rahul Bhargava Prachi Kumar Shiv Kumar Sharma Manoj Kumar Avinash Kaur 2015International Journal of Ophthalmology(English edition)2015,8,5:8
2Management of neglected cervical spine dislocation: a study of six cases显示文摘没有神经病学的赤字的六忽视的颈的脊骨脱臼的一个案例系列,它是管理了 operatively.MethodsThe 学习的 ObjectiveTo 报告从 2010 年 8 月被进行到 2011 年 12 月,案例从医药教育和研究的研究生研究所的门诊部被选择,印度。病人在 30 ~ 50 年的年龄组。所有病人经由前面、以后的 approaches.ResultsDuring 被操作立即的手术后的时期,五(83.33%) 病人们有正常神经病学的地位。有 C 5-C6 subluxation 的(16.67%)病人在在更低的手足的 2/5 和在在 C 6 level.ConclusionThere 下面的上面的手足的 3/5 的水平和马达功率是的 C 6下面与感觉损失开发了神经病学的赤字在对颈的脊骨的忽视的分散注意力的屈曲损害的颅骨拖拉的角色都没为更多推迟比 3 个星期。以后由前面的途径列在后面节省许多时间。如果两条途径将在一样的坐被做,其次地对乐器学没有需要。但是如果上演过程是 planed,以后的稳定被推荐,,有在神经病学的地位的恶化的风险。Vijay Goni Nirmal Raj Gopinathan Vibhu Krishnan Rajesh Kumar Avinash Kumar 2013Chinese Journal of Traumatology2013,16,4:6
3Hepatic stem cells: A viable approach for the treatment of liver cirrhosis显示文摘Liver cirrhosis is characterized by distortion of liver architecture, necrosis of hepatocytes and regenerative nodules formation leading to cirrhosis. Various types of cell sources have been used for the management and treatment of decompensated liver cirrhosis.Knowledge of stem cells has offered a new dimension for regenerative therapy and has been considered as one of the potential adjuvant treatment modality in patients with end stage liver diseases(ESLD). Human fetal hepatic progenitor cells are less immunogenic than adult ones. They are highly propagative and challenging to cryopreservation. In our earlier studies we have demonstrated that fetuses at 10-18 wk of gestation age contain a large number of actively dividing hepatic stem and progenitor cells which possess bipotent nature having potential to differentiate into bile duct cells and mature hepatocytes. Hepatic stem cell therapy for the treatment of ESLD is in their early stage of the translation. The emerging technology of decellularization and recellularization might offer a significant platform for developing bioengineered personalized livers to come over the scarcity of desired number of donor organs for the treatment of ESLD. Despite these significant advancements long-term tracking of stem cells in human is the most important subject nowadays in order to answer several unsettles issues regarding the route of delivery, the choice of stem cell type(s), the cell number and the timepoint of cell delivery for the treatment in a chronic setting. Answering to these questions will further contribute to the development of safer, noninvasive, and repeatable imaging modalities that could discover better cell therapeutic approaches from bench to bedside. Combinatorial approach of decellularization and nanotechnology could pave a way towards the better understanding in determination of cell fate posttransplantation.Md Aejaz Habeeb Sandeep Kumar Vishwakarma Avinash Bardia Aleem Ahmed Khan 2015World Journal of Stem Cells2015,7,5:5
4An evaluation of the emission profile for two-wheelers at a traffic junction显示文摘Two-wheeler vehicles are an important mode of transportation in developing countries.However,the emissions from two-wheeler vehicles are significant.Urban two-wheeler vehicles with gasoline-fueled engines produce NO,and particulate matter emissions that affect urban air quality.During traffic light stops and programmed stops,for instance,pollutants are emitted and are dangerous to human health.In this experimental study,two-wheeler vehicles with different makes,technologies and engine capacities were tested for exhaust emissions including gravimetric and online measurements at different engine speeds and a no load condition at a si mutated traffic junction.Gravimetric measurements were performed by collecting the particulate mass(at two engine speeds:1500 and 2500 rpm) from a diluted engine-out exhaust on quartz filter paper.Next,these collected particulates were used to determine the presence of metals,as well as the benzene soluble organic fraction(BSOF).The total particulate mass,BSOF and trace elements were slightly higher at a higher engine speed(2500 rpm).Online measurements were performed by sampling the engine exhaust(at four engine speeds:1500.2000,2500,and 3000 rpm)and using online instruments to determine the particle number and size distribution,the particle-bound polyaromatic hydrocarbons(PAHs),the gaseous emissions and the smoke opacity.Engines with higher cubic capacity emitted a higher concentration of nano-particles.The particle-bound PAH concentration increased as the engine speed increased,but this concentration was notably low for the highest engine speed tested(3000 rpm).The regulated gaseous emissions increased as the engine speed increased for all vehicles.Avinash Kumar Agarwal Prakhar Bothra Tarun Gupta Pravesh Chandra Shukla 2015Particuology2015,13,1:4
5Emission profiling of diesel and gasoline cars at a city traffic junction显示文摘In congested urban roads,cars must stop at intersections because of city traffic lights.As a result,pedestrians and traffic police personnel are exposed to pollutants emanating from the tailpipe of various vehicles at such city traffic junctions.In this study,various gasoline- and diesel-fueled cars complying with different emission standards were tested for their emissions in simulated city traffic junction conditions.The engine exhaust from these cars was subjected to physicochemical characterization at different engine speeds under no-load conditions.These engine conditions were chosen because the cars idle at different engine speeds at a city traffic junction.Gravimetric and real-time measurements were performed for the tailpipe exhaust sampled from these vehicles.Exhaust particles were collected on 47 mm diameter quartz filter papers and subjected to gravimetric analysis for determining the total particulate mass(TPM)and trace metals while the engines were operated at two different engine idling speeds,1500 rpm(representing low idling) and 2500 rpm(representing high idling).At similar engine operating conditions,TPM and trace metals were lower for the exhaust from gasoline engines compared to the exhaust from diesel engines.Real-time measurements were performed for particle-bound poly-aromatic hydrocarbons(PAHs),particle number and size distribution,regulated gaseous emissions and smoke opacity of the exhaust at four different engine speeds,1500,2000,2500,and 3000 rpm.Particle-bound PAHs showed a decreasing trend for the vehicles that complied with stricter vehicular emission standards.Higher particle peak number concentrations were observed for diesel exhausts compared to the results for gasoline exhaust.Regulated gaseous emissions were also compared.Avinash Kumar Agarwal Tarun Gupta Prakhar Bothra Pravesh Chandra Shukla 2015Particuology2015,13,1:4
6Enhanced thermoelectric performance in p-type ZrCoSb based half-Heusler alloys employing nanostructuring and compositional modulation显示文摘ZrCoSb based half-Heusler(HH)alloys have been widely studied as a p-type thermoelectric(TE)material for power generation applications in the mid-temperature regime.However,their intrinsically high thermal conductivity has been found to be detrimental for the improvement in their thermoelectric figure-of-merit(ZT),which presently is far below unity.In the current work,a state-of-the-art ZT~1.1 at 873 K was realized in an optimized composition of nanostructured Zr1-xHfxCoSb_(0.9)Sn_(0.1) HH alloys by employing compositional modulation i.e.grain-by-grain compositional variations,which leads to a substantial increase in its power factor coupled with a concurrent decrease in its thermal conductivity.Significant reduction in the phonon mean-free-path is observed on Hf substitution,which is comparable to the average crystallite size(~25 nm),thus leading to a very low thermal conductivity of~2.2Wm^(-1)K^(-1) at 873 K,which is amongst the lowest reported in HH alloys.The TE device characteristics,estimated using cumulative temperature dependence model for quantitative evaluation of TE performance,yielded an output power density of~10 Wcm2 with a leg efficiency of~10%in the optimized composition of nanostructured Zr_(1-x)Hf_(x)CoSb_(0.9)Sn_(0.1) HH alloys,which is comparable to the reported efficiencies of other state-of-the-art TE materials.Nagendra S.Chauhan Sivaiah Bathula Avinash Vishwakarma Ruchi Bhardwaj Kishor Kumar Johari Bhasker Gahtori Ajay Dhar 2019Journal of Materiomics2019,5,1:3
7Effect of Exhaust Gas Recirculation (EGR) on performance, emissions, deposits and durability of a constant speed compression ignition engine显示文摘Deepak Agarwal Shrawan Kumar Singh Avinash Kumar Agarwal 2011Applied Energy2011,,8:2
8Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines显示文摘Avinash Kumar Agarwal 2006Progress in Energy and Combustion Science2006,,3:2
9The role of 18 F-fluoride PET-CT in the detection of bone metastases in patients with breast, lung and prostate carcinoma: a comparison with FDG PET/CT and 99m Tc-MDP bone scan显示文摘Nishikant Avinash Damle Chandrasekhar Bal G. P. Bandopadhyaya Lalit Kumar Praveen Kumar Arun Malhotra Sneh Lata 2013Japanese Journal of Radiology2013,,:1
10Combustion characteristics of diesel HCCI engine: An experimental investigation using external mixture formation technique显示文摘Akhilendra Pratap Singh Avinash Kumar Agarwal 2012Applied Energy2012,,:1
11Time resolved numerical modeling of oil jet cooling of a medium duty diesel engine piston 显示文摘Avinash Kumar Agarwal Sandeep Kumar Goyal Dhananjay Kumar Srivastava 2011International Communications in Heat and Mass Transfer2011,,3:1
12Particulate emission characterization of a biodiesel vs diesel - fuelled compression ignition transport engine: A comparative study 显示文摘Dipankar Dwivedi Avinash Kumar Agarwalb Mukesh Sharma 2006Atmospheric Environment2006,40,:1
13Long-term and non-invasive in vivo tracking of DiD dye-labeled human hepatic progenitors in chronic liver disease models显示文摘BACKGROUND Chronic liver diseases(CLD)are the major public health burden due to the continuous increasing rate of global morbidity and mortality.The inherent limitations of organ transplantation have led to the development of stem cell-based therapy as a supportive and promising therapeutic option.However,identifying the fate of transplanted cells in vivo represents a crucial obstacle.AIM To evaluate the potential applicability of DiD dye as a cell labeling agent for longterm,and non-invasive in vivo tracking of transplanted cells in the liver.METHODS Magnetically sorted,epithelial cell adhesion molecule positive(1×106 cells/mL)fetal hepatic progenitor cells were labeled with DiD dye and transplanted into the livers of CLD-severe combined immunodeficiency(SCID)mice.Near-infrared(NIR)imaging was performed for in vivo tracking of the DiD-labeled transplanted cells along with colocalization of hepatic markers for up to 80 d.The existence of human cells within mouse livers was identified using Alu polymerase chain reaction and sequencing.RESULTS NIR fluorescence imaging of CLD-SCID mice showed a positive fluorescence signal of DiD at days 7,15,30,45,60,and 80 post-transplantation.Furthermore,positive staining of cytokeratin,c-Met,and albumin colocalizing with DiD fluorescence clearly demonstrated that the fluorescent signal of hepatic markers emerged from the DiD-labeled transplanted cells.Recovery of liver function was also observed with serum levels of glutamic-oxaloacetic transaminase,glutamate-pyruvate transaminase,and bilirubin.The detection of human-specific Alu sequence from the transplanted mouse livers provided evidence for the survival of transplanted cells at day 80.CONCLUSION DiD-labeling is promising for long-term and non-invasive in vivo cell tracking,and understanding the regenerative mechanisms incurred by the transplanted cells.Chaturvedula Tripura Srinivas Gunda Sandeep Kumar Vishwakarma Avinash Raj Thatipalli Jedy Jose Mahesh Kumar Jerald Aleem Ahmed Khan Gopal Pande 2022World Journal of Hepatology2022,14,10:1
14Char- acterization of a new Bacillus cereus ATUAVP1846 strain pro ducing penicillin V acylase, and optimization of fermentation pa- rameters显示文摘Avinash Vellore Sunder Atul Kumar Neha Naik 2012Annals of Microbiology2012,62,3:1
15Effect of Exhaust Gas Recirculation (EGR) on performance, emissions, deposits and durability of a constant speed compression ignition engine显示文摘Deepak Agarwal Shrawan Kumar Singh Avinash Kumar Agarwal 2011Applied Energy2011,,8:1
16Performance and emissions characteristics of Jatropha oil ( preheated and blends) in a direct injection compression ignition engine 显示文摘Deepak Agarwal Avinash Kumar Agarwal 2007Applied Thermal Engineering2007,27,13:1
17Transient analysis following tripping of a primary circulating pump for 500-MWe PHWR power plant 显示文摘Gaikwad Avinash J Rajash Kumar Vhora S F 2003Nuclear Science2003,50,4:1
18Performance and emissions characteristics of jatropha oil (preheated and blends) in a direct injection compression ignition engine显示文摘Deepak Agarwal Avinash Kumar Agarwal 2007Applied Thermal Engineering2007,27,13:1
19Distal femoral physeal crush injury with metaphyseal comminution - A report of two cases and a new perspective to physeal injury显示文摘一根长骨头的 physis 可以变得如果它创伤地沿着它的长轴被装载,在 metaphysis 和 epiphysis 之间夹了并且压碎。如此的 physeal 损害可以导致象尖畸形和生长限制一样的复杂并发症并且因此,如此的损害的管理要求与远侧的大腿骨的 physeal 压碎损害的足够的计划和专心的 execution.Two 病人用戒指 fixator 被对待以便一枚戒指有电线通过大腿骨的柄通过 epiphysis 和其它。在桌子图象 intensifier 上,压碎的 physis 的控制分心被做带类似于相反的手足的 physis 的高度。病人们被跟随在上面为超过二年临床上并且放射学地。没有操作手足的临床或放射学的尖畸形。MRI 扫描戒指 fixator 获得的二颗 patients.The 分心在也没有 physeal 酒吧形成显示出未经触动的 physes 显得规定了宽大呼吸空间到压缩 physis 并且生长潜力可能被过程重获。然而,二年是后续的相对短的持续时间和更长的持续时间的进一步的后续并且在病人的更大的数字被需要计量我们使用的技术的实际有效性。Prateek Behera Nirmal Raj Gopinathan Avinash Kumar Balaji Saibaba Pebam Sudesh Rakesh John 2017Chinese Journal of Traumatology2017,20,6:1
20Basin Geomorphology and Drainage Morphometry Parameters Used as Indicators for Groundwater Prospect: Insight from Geographical Information System(GIS) Technique显示文摘Influence of structural and lithological controls of various drainage patterns and their stream orientations(for 2nd, 3rd and 4th order steams) were identified to evaluate the direction and controlling factors of drainage network. To investigate the prospect of groundwater, hydrogeomorphological features of river basin viz. Mulki-Pavanje were identified and mapped. To evaluate the characteristics of the basin, different morphometric parameters(linear, areal and relief) were computed in sub-basin wise(SB-I to-VII). The linear parameters suggest drainage network is controlled by geomorphology. The form factor(Ff), elongation ratio(Re) and circularity ratio(Rc) suggest that the basin is in an elongated shape. The drainage density(Dd) indicates resistant/permeable strata under medium-dense vegetation with moderate relief. The areal parameters of the sub-basins(except SBI and Ⅲ) indicates moderate ground-slopes associated with moderately permeable rocks, which promote moderate run-off and infiltration. Drainage texture(T) of the whole basin indicates coarse texture while the SB-I, and Ⅲ showing an intermediate texture. The relief parameters namely ruggedness number(Rn) infers low basin relief and poor drainage density. To identify the most deficit/surplus zones of groundwater suitable weightages were assigned to the hydrogeomorphological units and morphometric parameters. The study reveal that the basin manifest that SB-Ⅲ shall be most deficit zone of groundwater, whereas SB-VII, VI and V are found to show increase in groundwater potentiality. Groundwater prospect area in this basin is estimated to be 7% area under poor, 44% area under moderate and 49% area under good to excellent. This paper demonstrated the potential application of geographical information system(GIS) techniques to evaluate the groundwater prospect in absence of traditional groundwater monitoring data.Kumar Avinash B Deepika K S Jayappa 2014Journal of Earth Science2014,25,6:1
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