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| 1 | 生活在土地上的人们:20世纪全球人口和耕地的变化显示文摘本研究评述了20世纪全球耕地分布发生的主要变化。在20世纪,耕地基数大幅度减小,人均耕地从1900年的0.75hm^2/人下降到1990年的0.35hm^2/人。耕地流失的速度在不同的地方不一样:世界上超过一半的人口居住在发展中国家,他们丧失了人均耕地面积的2/3。耕地的分布在20世纪90年代变得更不均衡,世界上80%的人口依靠低于0.35hm^2的人均耕地面积而生存。发展中国家农业产量的增长速度勉强跟上人口的增长速度。总的来说,由于全球粮食生产系统对昂贵的技术和全球粮食贸易的依赖程度不断增加,它正变得越来越易受区域性破坏的影响。 | Navin Ramankutty Jonathan A.Foley Nicholas J.Olejniczak 谈明洪 | 2002 | AMBIO-人类环境杂志2002，31，3： | 15 |
| 2 | Pancreatic fluid collections: What is the ideal imaging technique?显示文摘Pancreatic fluid collections(PFCs) are seen in up to 50% of cases of acute pancreatitis. The Revised Atlanta classification categorized these collections on the basis of duration of disease and contents, whether liquid alone or a mixture of fluid and necrotic debris. Management of these different types of collections differs because of the variable quantity of debris; while patients with pseudocysts can be drained by straight-forward stent placement, walledoff necrosis requires multi-disciplinary approach. Differentiating these collections on the basis of clinical severity alone is not reliable, so imaging is primarily performed. Contrast-enhanced computed tomography is the commonly used modality for the diagnosis and assessment of proportion of solid contents in PFCs; however with certain limitations such as use of iodinated contrast material especially in renal failure patients and radiation exposure. Magnetic resonance imaging(MRI) performs better than computed tomography(CT) in characterization of pancreatic/peripancreatic fluid collections especially for quantification of solid debris and fat necrosis(seen as fat density globules), and is an alternative in those situations where CT is contraindicated. Also magnetic resonance cholangiopancreatography is highly sensitive for detecting pancreatic duct disruption and choledocholithiasis. Endoscopic ultrasound is an evolving technique with higher reproducibility for fluid-to-debris component estimation with the added advantage of being a single stage procedure for both diagnosis(solid debris delineation) and management(drainage of collection) in the same sitting. Recently role of diffusion weighted MRI and positron emission tomography/CT with ^(18)F-FDG labeled autologous leukocytes is also emerging for detection of infection noninvasively. Comparative studies between these imaging modalities are still limited. However we look forward to a time when this gap in literature will be fulfilled. | Narendra Dhaka Jayanta Samanta Suman Kochhar Navin Kalra Sreekanth Appasani Manish Manrai Rakesh Kochhar | 2015 | World Journal of Gastroenterology2015，21，48： | 13 |
| 3 | Real-time three-dimensional myocardial contrast echocardiography in assessment of myocardial perfusion defects显示文摘Background Both real-time three-dimensional echocardi ography (RT3DE) and myocardial contrast echocardiography (MCE) are novel imaging techniques. The purpose of this study was to confirm the feasibility and accuracy of RT3DE combined with MCE for quantitative evaluation of myocardial perfusion defects. Methods Thirteen dogs underwent ligation of the left anterior descending artery (LAD, n=6) or distal branch of the left circumflex artery (LCX, n=7) under general anaesthesia. Three to four ml of a perfluoropropane (C 3F 8) microbubble contrast agent was injected intravenously to assess the resulting myocardial perfusion defects with a commercially available Philips SONOS-7500 ultrasound system. After removal of the dog hearts, Evans blue dye was injected via the left and righ t coronary arteries to stain the myocardium at risk. In vitro anatomic measurements of myocardial mass after removal of the animals’ hearts were used as control s. Results Left ventricular (LV) mass determined by RT3DE ranged 36.7-68.9 g [mean, (54.6±9.6) g] before coronary artery ligation, and correlated highly (r=0.99) with in vitro measurement of LV mass [range, 38.9-71.1 g; mean, (55.6±9.3) g]. There was no significant difference between RT3DE and in vitro measurements of LV mass [range, 36.7-68.9 g; mean, (51.3±12.5) g. Or range, 38.9-71. 1 g; mean, (53.7±12.3) g, respectively] and under-perfused mass [range, 0-21.4 g; mean, (12.0±6.9) g. Or range, 0-19.8 g; mean, (10.8±6.3) g, respectively] after th e LAD ligation (P>0.05). Likewise, no significant difference was present between RT3DE and in vitro measurements of LV mass [range, 50.1-65.4 g; mean, (57.5±5.9 ) g. Or range, 51.5-65.8 g; mean, (57.3±6.4) g, respectively] and under-perfused m ass [range, 0-25.6 g; mean, (13.3±9.6) g. Or range, 0-22.7 g; mean, (12.8±8.1 ) g, respectively] after the LCX ligation (P>0.05). For all the animals with coronary ligation, LV mass measured by RT3DE ranged 35.9-68.6 g [mean, (54.8±10.0) g] a nd there was no significant difference between RT3DE and in vitro measurements of LV mass and under-perfused mass (P>0.05, r=0.99). Further, the under-perfused mass derived from RT3DE [range, 0-25.6 g; mean, (12.7±8.2) g] correlate d strongly with the in vitro measurements [range, 0-22.7 g; mean, (11.9±7.2) g] ( r=0.96). Conclusion RT3DE with MCE is a rapid and accurate method for estimating LV myocardial mass and quantifying perfusion defects. | 陈立新 王新房 Navin C anda Andrew P Miller 谢明星 庄磊 杨娅 王静 黄润青 杨颖 费洪文 王良玉 | 2004 | Chinese Medical Journal2004，，3： | 8 |
| 4 | 酒精室间隔消融术与肥厚型心肌病显示文摘大多数的肥厚型心肌病患者左心症状是由于流出道梗阻所致,内科治疗能缓解其症状。少数患者内科治疗后,仍有症状,传统上,这些患者可接受室间隔切除术缓解流出道梗阻。由于手术仅限于几个有经验的中心,药物难治性的患者多采用经皮消融疗法解除梗阻、缓解症状。 | Carey Kimmelstiel Barath Krishnamurthy Andrew Weintraub Navin Kapur | 2009 | 中华心血管病杂志2009，37，12： | 8 |
| 5 | 实时三维经胸超声心动图测量缩流面积评价主动脉瓣反流显示文摘目的应用实时三维经胸超声心动图(3D-TTE)测量缩流面积(VCA)评价主动脉瓣反流。方法将56例主动脉瓣反流患者的三维测量的VCA以及二维经胸超声心动图(2D-TTE)测量的缩流宽度与主动脉根部造影和外科手术的主动脉瓣反流程度相比较。结果3D—TTE测得的VCA与主动脉根部造影和外科手术的主动脉瓣反流程度密切相关(r=0.95),无明显重叠。2D—TTE测得的缩流宽度亦与主动脉根部造影和手术的主动脉瓣反流程度有很好的相关性(r=0.92),但有较多的重叠。以主动脉根部造影和外科手术为主动脉瓣反流程度的标准,三维测得的1~4度主动脉瓣反流的相应VCA分别为≤0.19cm^2,0.2~0.39cm^2,0.4~0.59cm^2,≥0.6cm^2。结论实时3D—TTE彩色多普勒能准确评价主动脉瓣反流,且和主动脉根部造影有很好的相关性。 | 方理刚 Navin C.NANDA Ming Chon HSIUNG 程康安 朱文玲 | 2008 | 临床超声医学杂志2008，10，3： | 7 |
| 6 | Socio-economic and Environmental Implications of the Hydroelectric Projects in Uttarakhand Himalaya, India显示文摘This paper deals with detailed analysis of the fiasco created by the Tehri High Dam in Uttarakhand, India, particularly in terms of resettlement and rehabilitation of the local inhabitants. Aspects pertaining to the environmental issues are also discussed. Currently, the river valleys in Uttarakhand state of India are the targets of increasing hydroelectric projects. Virtually all rivers are being exploited for generating environmental friendly power. Having being learned the hard lesson from Tehri Dam, it has been decided to opt for such schemes in which comparatively little submergence and tempering with the fragile eco-systems is involved.However, our observations suggest that even in such schemes if due care is not taken they may turn out to be a failure. | Naresh Rana S. P. Sati Y.P. Sundriyal Madan Mohan Doval Navin Juyal | 2007 | Journal of Mountain Science2007，4，4： | 3 |
| 7 | 标准通道与微通道经皮肾镜取石术结石清除效果及对机体血清炎性因子水平影响对比显示文摘目的:探究对比标准通道、微通道经皮肾镜取石术对肾结石患者结石清除效果及对机体血清炎性因子水平影响.方法:选取100例肾结石患者作为研究对象,分为参照组(50例)与研究组(50例),给予参照组微通道经皮肾镜取石术治疗,给予研究组标准通道经皮肾镜取石术治疗.对比两组患者清除效果与血清炎性因子,使用统计学进行分析.结果:研究组的肾盂结石清除有效率高于参照组,组间差异显著(P<0.05).研究组的肾盏结石、肾铸结石清除有效率,均低于参照组,组间差异显著(P<0.05).比对两组患者术后3天的C反应蛋白与降钙素原,研究组均低于参照组,组间差异呈P<0.05.结论:标准通道、微通道均可用于肾结石的治疗中,可根据疾病种类选择手术方式,同时标准通道有利于患者术后恢复. | 胡换春 Navin Shrestha 周乐 汪波 | 2019 | 医药前沿2019，9，4： | 2 |
| 8 | 输尿管镜气压弹道碎石术治疗泌尿系结石患者的临床观察显示文摘目的观察分析输尿管镜气压弹道碎石术治疗对泌尿系结石患者的效果。方法选取2018年2月~2019年2月收治的112例泌尿系结石患者,按照数字随机表法分为实验组(56例)和对照组(56例),实验组应用输尿管镜气压弹道碎石术,对照组应用钬激光碎石术。统计分析两组泌尿系结石患者的治疗效果、并发症(尿道口渗血、感染、肉眼血尿以及输尿管狭窄等)发生率、平均手术时间、平均双J管留置时间、平均住院时间。结果两组泌尿系结石患者在平均手术时间、平均双J管留置时间、平均住院时间等指标比较无统计学意义(P>0.05),实验组泌尿系结石患者的治疗效果显著高于对照组(P<0.05),实验组泌尿系结石患者的尿道口渗血、感染、肉眼血尿以及输尿管狭窄等并发症发生率显著低于对照组(P<0.05)。结论输尿管镜气压弹道碎石术治疗对泌尿系结石患者的效果显著,可显著降低并发症发生率。 | 周乐 胡换春 汪波 Navin Shrestha | 2020 | 航空航天医学杂志2020，31，4： | 2 |
| 9 | 实时三维经胸超声心动图评价主动脉瓣狭窄的价值显示文摘目的评价实时三维经胸超声心动图(3D-TTE)测量主动脉瓣面积以评估主动脉瓣狭窄的价值。方法22例主动脉瓣狭窄患者,3D-TTE测量其主动脉瓣瓣口面积(3D-AVA)。以心导管法获得的主动脉瓣瓣口面积(Cath-AVA)作为金标准,连续方程计算主动脉瓣瓣口面积(Cont-AVA),计算多普勒测量的跨瓣最大血流速度(Vmax)和最大跨瓣压差(PGmax)、平均跨瓣压差(PGmean)、Cont-AVA、3D-AVA与Cath-AVA相互间的相关性。结果3D-AVA、Cont-AVA、Vmax、PGmax、PGmean与Cath-AVA的相关系数分别为0.93,0.76,0.61,0.54,0.57;Cont-AVA与Cath-AVA相关系数均为0.76。结论3D-AVA能准确评价主动脉瓣狭窄,与Cont-AVA和Cath-AVA检查结果无差异。 | 方理刚 Navin C. Nanda 郭立琳 朱文玲 方全 | 2009 | 临床超声医学杂志2009，11，3： | 2 |
| 10 | Two‐ and Three‐Dimensional Speckle Tracking Echocardiography: Clinical Applications and Future Directions显示文摘 | Monodeep Biswas Selvin Sudhakar Navin C. Nanda Gerald Buckberg Manish Pradhan Asad Ullah Roomi Willem Gorissen Helene Houle | 2013 | Echocardiography2013，，1： | 2 |
| 11 | Biogeophysical effects of land use on climate: Model simulations of radiative forcing and large-scale temperature change显示文摘 | Richard A. Betts Peter D. Falloon Kees Klein Goldewijk Navin Ramankutty | 2006 | Agricultural and Forest Meteorology2006，，2： | 2 |
| 12 | Self nano-emulsifying drug delivery system for Embelin:Design,characterization and in-vitro studies显示文摘CThe objective of the present study was to prepare solid self-nanoemulsifying drug delivery system(S-SNEDDS)containing Capryol-90 as oil phase for the delivery of Embelin,a poorly water soluble herbal active ingredient.Box-Behnken experimental design was employed to optimise the formulation variables,X1(amount of oil;Capryol 90),X2(amount of surfactant;Acrysol EL 135)and X3(amount of co-surfactant;PEG 400).Systems were appraised for visual characteristics for self emulsifying time,globule size and drug release.Optimised liquid formulations were formulated into free flowing granules(S-SNEDDS)by adsorption on the porous materials like Aerosil 200 and Neusilin and thereby compressed into tablet.In vitro dissolution studies of SNEDDS revealed increased in the dissolution rate of the drug.FT-IR data revealed no physicochemical interaction between drug and excipients.Solid state characterization of S-SNEDDS by DSC and Powder XRD confirmed reduction in drug crystallinity which further supports the results of dissolution studies.TEM analysis exhibited spherical globules.Further,the accelerated stability studies for 6 months revealed that S-SNEDDS of Embelin are found to be stable without any significant change in physicochemical properties.Thus,the present studies demonstrated dissolution enhancement potential of porous carrier based S-SNEDDS for poorly water soluble herbal active ingredient,Embelin. | Komal Parmar Jayvadan Patel Navin Sheth | 2015 | Asian Journal of Pharmaceutical Sciences2015，10，5： | 2 |
| 13 | The AIMS65 score compared with the Glasgow-Blatchford score in predicting outcomes in upper GI bleeding显示文摘 | Brian H. Hyett Marwan S. Abougergi Joseph P. Charpentier Navin L. Kumar Suzana Brozovic Brian L. Claggett Anne C. Travis John R. Saltzman | 2012 | Gastrointestinal Endoscopy2012，，： | 2 |
| 14 | A fast block motion estima-tion algorithm using dynamic pattern search显示文摘 | Purwar Ravindra Rajpal Navin | 2013 | Signal Im-age and Video Processing2013，7，1： | 1 |
| 15 | Effect of coupling agent on abrasive wear behaviour of chopped jute fibre-reinforced polypropylene composites显示文摘 | Navin Chand U.K. Dwivedi | 2006 | Wear2006，，10： | 1 |
| 16 | Multiple sclerosing hemangiomas of the lung显示文摘 | Soumil VJ Navin B Sangeeta D Na J | 2004 | Asian Cardiovasc Thorac Ann2004，12，4： | 1 |
| 17 | A costbenefit Analysis model of product design for recyclability and its application 显示文摘 | Chen Rosy Wei Dundee Navin Chandra Prinz Fritz B | 1994 | IEEE Transactions on Components Packaging and Manufacturing Technology--Part A1994，14，4： | 1 |
| 18 | EMD-Based filtering (EMDF) of low-frequency noise for speech enhancement显示文摘 | Navin C John J S | 2012 | IEEE Transactions on Audio Speech and Language Pro- gressing2012，20，4： | 1 |
| 19 | On efficient cascade implementation of narrow band decimator filter for∑-△ modulators 显示文摘 | Naviner L Naviner J F | 2000 | IEEE Midwest Symp Circ and Syst2000，47，1： | 1 |
| 20 | Electrical characterization of PVA-based nanocomposite electrolyte nanofibre mats doped with a multiwalled carbon nanotube显示文摘 | S. L. Agrawal Neelesh Rai T. S. Natarajan Navin Chand | 2013 | Ionics2013，，1： | 1 |
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