|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect of sodium arsenite on spermatogenesis, plasma gonadotrophins and testosterone in rats显示文摘Aim:To investigate the effect of arsenic on spermatogenesis.Methods:Mature(4 months old)Wistar rats were intraperitoneally administered sodium arsenite at doses of 4,5 or 6mg·kg^-1·day^-1 for 26 days.Different varieties of germ cells at stage Ⅶ seminiferous epithelium cycle,namely,type A spermatogonia(ASg),preleptotene spermatocytes(pLSc),midpachytene spermatocytes(mPSc) and step 7 spermatids(7Sd) were quantitatively evaluated, along with radioimmunoassay of plasma follicle-stimulating hormone(FSH),lutuneizing hormone(LH),testosterone and assessment of the epididymal sperm count.Results:In the 5 and 6 mg/kg groups,there were significant dosedependent decreases in the accessory sex organ weights,epididymal sperm count and plasma concentrations of LH,FSH and testosterone with massive degeneration of all the germ cells at stage Ⅶ,The changes were insignificant in the 4 mg/kg group.Conclusion:Arsenite has a suppressive influence on spermatogenesis and gonadotrophin and testosterone release in rats. | Mahitosh Sarkar Gargi Ray Chaudhuri Aloke Chattopadhyay Narendra Mohan Biswas | 2003 | Asian Journal of Andrology2003，5，1： | 24 |
| 2 | 1971-2009年珠穆朗玛峰地区尼泊尔境内气候变化显示文摘利用珠穆朗玛峰南坡尼泊尔境内(科西河流域)的10个气象站1971-2009年月平均气温、月平均最高、最低气温和逐月降水资料,采用线性趋势、Sen斜率估计、Mann-Kendall等方法分析区域气候变化状况及其时空特征,并与珠穆朗玛峰北坡地区气候进行比较,分析了珠穆朗玛峰地区气候变化的特征与趋势。结果表明:(1)1971-2009年间,珠穆朗玛峰南坡年平均气温为20.0℃,线性升温率为0.25℃/10a,与北坡主要受年平均最低气温影响相反,增幅主要受年平均最高气温升高的影响,并且在1974年及1992年间出现两次显著增温,增温特别明显的月份为2月和9月;(2)该地区降水变化的局地性较强,近40年间年平均降水量为1729.01mm,年平均降水量以每年约4.27mm的线性增幅有所增加,但并不显著,且降水月变化和季变化特征均不明显;(3)由于珠穆朗玛峰南坡受到季风带来暖湿气流和喜马拉雅山阻挡的双重影响,珠峰南坡的年平均降水量远高于北坡;(4)珠穆朗玛峰南坡气温变暖的海拔依赖性并不明显,且南坡地区的变暖趋势并没有北坡变暖趋势明显。 | 祁威 张镱锂 高俊刚 杨续超 刘林山 Narendra Raj KHANAL | 2013 | 地理学报2013，68，1： | 21 |
| 3 | Polymorphism of -765G > C COX-2 is a risk factor for gastric adenocarcinoma and peptic ulcer disease in addition to H pylori infection:A study from northern India显示文摘AIM: To investigate -765G > C COX-2 polymorphism and H pylori infection in patients with gastric adenocarcinoma, peptic ulcer disease (PUD) and non- ulcer dyspepsia (NUD). METHODS: We enrolled 348 adult patients (62 gastric adenocarcinoma, 45 PUD and 241 NUD) undergoing upper gastrointestinal endoscopy at two referral centers between September, 2002 and May, 2007. H pylori infection was diagnosed when any of the four tests (RUT, culture, histopathology and PCR) were positive. Genotyping for -765G > C polymorphism of COX-2 was performed by PCR-RFLP analysis. RESULTS: Frequency of C carrier had significantassociation with gastric adenocarcinoma as compared to NUD [77.4% vs 29%, P < 0.001, odds ratio (OR) 8.20; 95% confidence interval (95% CI), 4.08-16.47] and PUD (77.4% vs 31.1%, P < 0.001; OR 8.04; 95% CI, 3.25-19.90). Risk of gastric adenocarcinoma was significantly higher in patients having C carrier with (OR 7.83; 95% CI 3.09-19.85) and without H pylori infection (OR 7.06; 95% CI, 2.61-19.09). Patients with C carrier and H pylori infection had significant risk for the development of PUD (P < 0.001; OR 5.65; 95% CI, 2.07-15.34). CONCLUSION: -765G > C COX-2 polymorphism with or without H pylori could be a marker for genetic susceptibility to gastric adenocarcinoma. COX-2 polymorphism in presence of H pylori infection might be useful in predicting the risk of PUD. | Ashish Saxena Kashi Nath Prasad Uday Chand Ghoshal Monty Roshan Bhagat Narendra Krishnani Nuzhat Husain | 2008 | World Journal of Gastroenterology2008，14，10： | 18 |
| 4 | Knights in Action: Lectin Receptor-Like Kinases in Plant Development and Stress Responses显示文摘像受体的 Kinase (RLK ) 是有在 Arabidopsis 的超过 600 基因的一个广阔蛋白质家庭并且 1100 在米饭。Lectin RLK (LecRLK ) 家庭被相信在糖类发信号以及压力感觉起关键作用。所有 LecRLKs 拥有三个领域:一个 N 终端 lectin 领域,一个中间的 transmembrane 领域,和一个 C 终端 kinase 领域。根据 lectin 域可变性, LecRLKs 是进三个子类的 subgrouped:L- , G- ,和 C 类型 LecRLKs。当 LecRLKs 上的以前的研究被基于倡导者的研究奉献给分类,比较结构的分析和表示分析时,大多数 LecRLKs 上的最近的研究在在植物调整关於生命/不能生活的应力和发展小径在这个基因家庭的潜力上放了特殊强调,因此做学习特别答应的 调停LecRLK 的规章的机制的前景。在这评论,我们详细关于一个历史、进化、结构的观点描述了 LecRLK 基因家庭。而且,我们在开发,压力条件,和神经质的反应在 LecRLKs 角色上放了强调。我们也讨论了前景在 LecRLK 基因家庭上由当前的知识提供了的令人激动的研究。LecRLK 基因家庭成员和他们的功能的差异的数量作为进一步的分析的有趣、相称的候选人标记这些基因,特别在庄稼改进的领域里。 | Neha Vaid Anca Macovei Narendra Tuteja | 2013 | Molecular Plant2013，6，5： | 18 |
| 5 | Ruptured hepatocellular carcinoma following chemoembolization:a western experience显示文摘BACKGROUND: Transcatheter arterial chemoembolization (TACE) is a recommended first line therapy for unresectable hepatocellular carcinoma (HCC). Serious complications such as neutropenic sepsis and hepatic decompensation are well known, but rupture of HCC following TACE is a rare and potentially fatal complication. The aim of this study was to identify the incidence of ruptured HCC following TACE and the associated risk factors. METHODS: A retrospective analysis was performed using our liver database with 'chemoembolization', 'ruptured HCC' covering the patients who received chemoembolization from January 1995 to December 2005. There were no exclusions. RESULTS: A total of 294 patients received chemoemboliza- tion in 530 sessions during the 10-year period. Of these, 2 ruptured following treatment (incidence 0.68%). The mean age was 65 years and the interval between the treatment and rupture was 2 and 24 days. The common factors were male sex, large tumor size (range 11-13 cm), and exophytic tumor growth. One patient died 2 days after rupture with hepatic decompensation while the second is alive after a 6-month follow up without tumor recurrence. CONCLUSIONS: Ruptured HCC following TACE is a rare but serious complication. Large tumor size, male sex, and exophytic growth of tumor may be predisposing factors for rupture. | Narendra Battula Parthi Srinivasan Mansoor Madanur Srinivas Prabhu Chava Oliver Priest Mohamed Rela Nigel Heaton | 2007 | Hepatobiliary & Pancreatic Diseases International2007，6，1： | 17 |
| 6 | Endoscopic incisional therapy for benign esophageal strictures: Technique and results显示文摘Benign esophageal strictures refractory to the conventional balloon or bougie dilatation may be subjected to various adjunctive modes of therapy, one of them being endoscopic incisional therapy(EIT). A proper delineation of the stricture anatomy is a prerequisite. A host of electrocautery and mechanical devices may be used, the most common being the use of needle knife, either standard or insulated tip. The technique entails radial incision and cutting off of the stenotic rim. Adjunctive therapies, to prevent re-stenosis, such as balloon dilatation, oral or intralesional steroids or argon plasma coagulation can be used. The common strictures where EIT has been successfully used are Schatzki's rings(SR) and anastomotic strictures(AS). Short segment strictures(< 1 cm) have been found to have the best outcome. When compared with routine balloon dilatation, EIT has equivalent results in treatment na?ve cases but better long term outcome in refractory cases. Anecdotal reports of its use in other types of strictures have been noted. Post procedure complications of EIT are mild and comparable to dilatation therapy. As of the current evidence, incisional therapy can be used for management of refractory AS and SR with relatively short stenosis(< 1 cm) with good safety profile and acceptable long term patency. | Jayanta Samanta Narendra Dhaka Saroj Kant Sinha Rakesh Kochhar | 2015 | World Journal of Gastrointestinal Endoscopy2015，7，19： | 14 |
| 7 | 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 |
| 8 | 科西河跨境流域水旱灾害与防治显示文摘科西河流域是恒河的一个重要支流,地跨中国、尼泊尔和印度3个国家,流域面积7.15万km2,流域具有世界上最大的高差(从海拔8 848 m的珠穆朗玛峰到海拔60 m的恒河平原),最为完整的气候、土壤和植被带谱。流域发育有罕见的多类型水旱灾害,主要有冰湖溃决、洪水、干旱、水土流失等。通过实地调查这一代表性跨界流域的水文、气象、地质、地貌、土壤植被和区域社会经济等基本特征并结合已有的研究资料,揭示流域冰湖溃决、洪水、干旱等水旱灾害的特征和时空发育规律。流域冰湖溃决灾害集中于科西河流域上级支流,灾害损失巨大,并由于溃决洪水的侵蚀,沿途链状滑坡泥石流灾害发育;洪水灾害主要集中于流域下游,在相对较高标准的防洪体系中,洪水灾害是自然因素和人为因素相结合产生的,并造成流域水土流失严重;干旱灾害范围大,年内持续时间长,并且由于人口增加和生态退化进一步严重化。最后,依据流域水旱灾害特点,提出一系列减灾策略与措施。 | 胡桂胜 陈宁生 Narendra Khanal 韩大为 | 2012 | 地球科学进展2012，27，8： | 9 |
| 9 | 世界公路桥梁检测方法研究显示文摘美国运输委员会的主要目标之一是提高我们国家的道路安全。针对这一目标,联邦、州和地方交通机构一致认为检测我们的近600000座桥梁是非常重要的。这些机构每年投入大量资金到桥梁检测方面的行动。确保质量,使得我们的桥梁检查计划维持在最高的水平,且资金的利用尽可能有效。通过美国桥梁检查计划收集的数据不仅用来确保我们的桥梁对公众来说是安全的,而且有助于构建编制桥梁养护、维修、复原和更换的基础。因此,确保高质量的数据收集是在检测过程中进行的,这是极其重要的。 | Harry Allen Capers Jr. Narendra Khambhati | 2009 | 公路2009，54，5： | 8 |
| 10 | Comparative prospective study between medial and lateral distal tibial locking compression plates for distal third tibial fractures显示文摘 | Sandeep Garg Vikram Khanna Mahaveer Prashad Goyal Narendra Joshi Amrut Borade Ishan Ghuse | 2017 | Chinese Journal of Traumatology2017，20，3： | 8 |
| 11 | Recent advances in catalytic combustion of AP-based composite solid propellants显示文摘Composite solid propellants(CSPs) have widely been used as main energy source for propelling the rockets in both space and military applications. Internal ballistic parameters of rockets like characteristic exhaust velocity, specific impulse, thrust, burning rate etc., are measured to assess and control the performance of rocket motors. The burn rate of solid propellants has been considered as most vital parameter for design of solid rocket motors to meet specific mission requirements. The burning rate of solid propellants can be tailored by using different constituents, extent of oxidizer loading and its particle size and more commonly by incorporating suitable combustion catalysts. Various metal oxides(MOs),complexes, metal powders and metal alloys have shown positive catalytic behaviour during the combustion of CSPs. These are usually solid-state catalysts that play multiple roles in combustion of CSPs such as reduction in activation energy, enhancement of rate of reaction, modification of sequences in reaction-phase, influence on condensed-phase combustion and participation in combustion process in gas-phase reactions. The application of nanoscale catalysts in CSPs has increased considerably in recent past due to their superior catalytic properties as compared to their bulk-sized counterparts. A large surface-to-volume ratio and quantum size effect of nanocatalysts are considered to be plausible reasons for improving the combustion characteristics of propellants. Several efforts have been made to produce nanoscale combustion catalysts for advanced propellant formulations to improve their energetics. The work done so far is largely scattered. In this review, an effort has been made to introduce various combustion catalysts having at least a metallic entity. Recent developments of nanoscale combustion catalysts with their specific merits are discussed. The combustion chemistry of a typical CSP is briefly discussed for providing a better understanding on role of combustion catalysts in burning rate enhancement. Available information on different types of combustion nanocatalysts is also presented with critical comments. | Narendra Yadav Prem Kumar Srivastava Mohan Varma | 2021 | Defence Technology(防务技术)2021，17，3： | 8 |
| 12 | Pseudoaneurysm following laparoscopic cholecystectomy显示文摘BACKGROUND:Laparoscopic cholecystectomy(LC)is the operation of choice for removal of the gallbladder. Unrecognized bile duct injuries present with biliary peritonitis and systemic sepsis.Bile has been shown to cause damage to the vascular wall and therefore delay the healing of injured arteries leading to pseudoaneurysm formation.Failure to deal with bile leak and secondary infection may result in pseudoaneurysm formation. This study was to report the incidence and outcomes of pseudoaneurysm in patients with bile leak following LC referred to our hospital. METHODS:A retrospective analysis of our prospectively maintained liver database using pseudoaneurysm, bile leak and bile duct injury following laparoscopic cholecystectomy from January 2000 to December 2005 was performed. RESULTS:A total of 86 cases were referred with bile duct injury and bile leak following LC and of these,4 patients (4.5%)developed hepatic artery pseudoaneurysm(HAP) presenting with haemobilia in 3 and massive intra- abdominal bleed in 1.Selective visceral angiography confirmed pseudoaneurysm of the right hepatic artery in 2 cases,cystic artery stump in one and an intact but ectatic hepatic artery with surgical clips closely applied to the right hepatic artery at the origin of the cystic artery in the fourth case.Effective hemostasis was achieved in 3 patients with coil embolization and the fourth patient required emergency laparotomy for severe bleeding and hemodynamic instability due to a ruptured right hepatic artery.Of the 3 patients treated with coil embolization, 2 developed late strictures of the common hepatic duct. . (CHD)requiring hepatico-jejunostomy and one developed a stricture of left hepatic duct.All the 4 patients are alive at a median follow up of 17 months(range 1 to 65)with normal liver function tests. CONCLUSIONS:HAP is a rare and potentially life- threatening complication of LC.Biloma and subsequent infection are reported to be associated with pseudoaneurysm formation.Late duct stricture is common either due to unrecognized injury at LC or secondary to ischemia after embolization. | Mansoor Ahmed Madanur Narendra Battula Harsheet Sethi Rahul Deshpande Nigel Heaton Mohamed Rela | 2007 | Hepatobiliary & Pancreatic Diseases International2007，6，3： | 8 |
| 13 | Review of studies on land use and land cover change in Nepal显示文摘Land use and land cover(LULC) in Nepal has undergone constant change over the past few decades due to major changes caused by anthropogenic and natural factors and their impacts on the national and regional environment and climate.This comprehensive review of past and present studies of land use and land cover change(LUCC) in Nepal concentrates on cropland, grassland, forest, snow/glacier cover and urban areas. While most small area studies have gathered data from different sources and research over a short period, across large areas most historical studies have been based on aerial photographs such as the Land Resource Mapping Project in 1986. The recent trend in studies in Nepal is to focus on new concepts and techniques to analyze LULC status on the basis of satellite imagery, with the help of geographic information system and remote sensing tools. Studies based on historical documents, and historical and recent spatial data on LULC, have clearly shown an increase in cropland areas in Nepal,and present results indicating different rates and magnitudes. A decrease in forest and snow/glacier coverage is reported in most studies. Little information is available on grassland and urban areas from past research. The unprecedented rate of urbanization in Nepal has led to significant urban land changes over the past 30 years. Meanwhile, long term historical LUCC research in Nepal is required for extensive work on spatially explicit reconstructions on the basis of historical and primary data collection, including LULC archives and drivers for future change. | Basanta PAUDEL ZHANG Yi-li LI Shi-cheng LIU Lin-shan WU Xue Narendra Raj KHANAL | 2016 | Journal of Mountain Science2016，13，4： | 7 |
| 14 | Characterization of chickpea germplasm conserved in the Indian National Genebank and development of a core set using qualitative and quantitative trait data显示文摘Chickpea is the third most important pulse crop as a source of dietary protein. Ever-increasing demand in Asian countries calls for breeding superior desi-type varieties, in turn necessitating the availability of characterized germplasm to breeders. The Indian National Genebank,located at the National Bureau of Plant Genetic Resources, New Delhi, conserves 14,651 accessions of chickpea. The entire set was characterized in a single large-scale experiment.High variation was observed for eight quantitative and 12 qualitative agro-morphological traits. Allelic richness procedure was employed to assemble a core set comprising 1103 accessions, 70.0% of which were of Indian origin. Comparable values of total variation explained by the first three principal components in the entire collection(51.1%) and the core(52.4%)together with conservation of nine pairwise r values among quantitative traits in the core collection and a coincidence rate around 99.7% indicated that the chickpea core was indeed an excellent representation of the entire chickpea collection in the National Genebank. The chickpea core exhibited greater diversity than the entire collection in agro-morphological traits, as assessed by higher variance and Shannon–Weaver diversity indices, indicating that the chickpea core maximized the phenotypic diversity available in the Indian chickpea germplasm. The chickpea core, comprising mainly indigenous desi genotypes, is expected to be an excellent resource for chickpea breeders. Information on the chickpea core can be accessed at http://gffzz905398e276204fc7h6fknqqkqouvc6op9.ffgz.tsg.suse.edu.cn/pgrportal. | Sunil Archak Rishi K.Tyagi P.N.Harer L.B.Mahase Neeta Singh Om P.Dahiya M.Abdul Nizar Mohar Singh Vrushali Tilekar Vikas Kumar Manoranjan Dutta Narendra P.Singh Kailash C.Bansal | 2016 | The Crop Journal2016，4，5： | 7 |
| 15 | Extraction and RP-HPLC determination of taxol in rat plasma, cell culture and quality control samples显示文摘A rapid,sensitive,selective and validated reverse phase high-performance liquid chromatography(RP-HPLC)method for the estimation of paclitaxel in micro-sample of rat plasma and in culture of cancer cells was performed in this study.The mobile phase consisted of an optimized mixture of methanol:water:trifluroacetic acid(80:20:0.1,v/v/v).Column elution at a flow rate of 1 mL/minute with UV detection at 225 nm at room temperature was used.The RP-HPLC method was successfully applied for the determination of paclitaxel in plasma samples and in culture of cancer cells with nano-quantity of estimation.The validation studies were performed in accordance with the International Conference on Harmonization(ICH)guidelines.The intra-and inter-day precision showed that the coefficients of variation ranged from 1.07%to 4.27%at different levels of concentrations.To the best of our knowledge,this study also reported for the first time the optimization of different solvents for effective extraction of paclitaxel wherein tert.-butyl methyl ether(TBME):diethyl ether(DEE)in 50:50 v/v composition was found most efficient with extraction efficiency ranging between 77.99%and 91.74%and between 76.14 and 93.66%in the plasma and cell culture,respectively.This proposed method was successfully applied to study the pharmacokinetics of paclitaxel and the influence of verapamil and all-trans retinoic acid(atRA)on paclitaxel pharmacokinetics in rat models.This proposed method might emerge as a valuable aid in the laboratory monitoring of paclitaxel in a variety of in vitro as well as in vivo scenarios. | Rakesh Kumar Tekade Antony D'Emanuele Abdelbary Elhissi Ashish Agrawal Anurekha Jain Basel Tawfiq Arafat Narendra Kumar Jain | 2013 | The Journal of Biomedical Research2013，27，5： | 5 |
| 16 | Climate change on the southern slope of Mt. Qomolangma (Everest) Region in Nepal since 1971显示文摘在在 1971 和 2009 之间的尼泊尔在科莫朗马山区域的南部的斜坡上从 10 个气象学的车站基于每月吝啬、最大、最小的空气温度和每月吝啬的 降水数据,在这个区域的气候的变化的空间、时间的特征用气候的线性趋势被分析,参议员斜坡估计和 Mann-Kendall 测试分析方法。这份报纸仅仅集中于南部的斜坡和尝试从北斜坡把结果与那些作比较在科莫朗马山区域澄清气候的变化的特征和趋势。结果显示出那:(1 ) 在 1971 和 2009 之间,在学习区域的年度吝啬的温度是 20. | 祁威 张镱锂 高俊刚 杨续超 刘林山 Narendra R.KHANAL | 2013 | Journal of Geographical Sciences2013，23，4： | 5 |
| 17 | Microstructure and surface texture driven improvement in in-vitro response of laser surface processed AZ31B magnesium alloy显示文摘The present work explored effects of laser surface melting on microstructure and surface topography evolution in AZ31B magnesium alloy.Thermokinetic effects experienced by the material during laser surface melting were simulated using a multiphysics finite element model.Microstructure and phase evolution were examined using scanning electron microscopy,X-ray diffraction,and electron back scatter diffraction.Surface topography was evaluated using white light interferometry.The interaction of surface melted samples with simulated body fluid was monitored by contact angle measurements and immersion studies up to 7 days.Laser surface melting led to formation of a refined microstructure with predominantly basal crystallographic texture.Concurrently,the amount ofβphase(Mg_(17)Al_(12))increased with an increase in the laser fluence.βphase preferentially decorated the cell boundaries.In terms of topography,the surface became progressively rougher with an increase in laser fluence.As a result,upon immersion in simulated body fluid,the laser surface melted samples showed an improved wettability,corrosion resistance,and precipitation of mineral having composition closer to the hydroxyapatite bone mineral compared to the untreated sample. | Tso-Chang Wu Sameehan SJoshi Yee-Hsien Ho Mangesh VPantawane Subhasis Sinha Narendra B.Dahotre | 2021 | Journal of Magnesium and Alloys2021，9，4： | 4 |
| 18 | Synthesis and characterization of high ceramic yield polycarbosilane precursor for SiC显示文摘The polycarbosilane(PCS)precursor for SiC with high molecular weight and medium molecular weight distribution was synthesized from polydimethylsilane at normal pressure.The chemical formula,the number average molecular weight,and the polydispersivity index of the synthesized PCS are SiC_(1.94)H_(5.01)O_(0.028),1135,and 1.66,respectively,which can be attributed to the higher reaction temperature used for polymerization.The polymer to ceramic conversion of PCS was completed at 900℃with a ceramic yield of 85%.The crystallization started at 1100℃,and at 1200℃,well resolved peaks ofβ-SiC were formed with small amount ofα-cristobalite.The X-ray diffraction(XRD)and transmission electron microscopy(TEM)studies indicated the presence of nanocrystallineβ-SiC. | Mangesh LODHE Narendra BABU A.SELVAM M.BALASUBRAMANIAN | 2015 | Journal of Advanced Ceramics2015，4，4： | 4 |
| 19 | An unusual cause of simultaneous bilateral spontaneous pneumothorax显示文摘INTRODUCTION Scrub typhus,a tropical febrile vector borne disease also known as'Tsutsugamushi disease',is caused by Orientia tsutsugamushi,a gram negative obligate intracellular slow growing bacteria.The infection is transmitted by the bite of larval stage(chiggers)mites belonging to the family Trombiculidae.The disease | Mohammed Ismail Nizami Narendra Kumar Narahari Goganti Kruparao Paramjyothi Ashima Sharma | 2017 | World Journal of Emergency Medicine2017，8，1： | 4 |
| 20 | Strength behaviour of sandstone subjected to polyaxial state of stress显示文摘The paper presents an experimental investigation on the strength behaviour of natural rock subjected to polyaxial state of stress. The polyaxial tests were conducted on cubical specimens of sandstone obtained from the Shivpuri district in Madhya Pradesh state of India, The specimens having nominal dimensions of100 mm x 100 mm x 100 mm were tested using a polyaxial testing machine. Twenty-five combinations of intermediate and minor principal stresses were applied and the specimens were loaded till failure occurs. It was observed that the intermediate principal stress has a substantial effect on the strength of the Shivpuri sandstone. A database of rock strength under various combinations of σ_2 and σ_3 was obtained for the Shivpuri sandstone. The database was used to study the predictability of five most commonly used strength criterion. Root mean square error(RMSE), average absolute relative error percentage(AAREP) and coefficient of accordance(COA) were used as indices for the measure of goodness of fit. It was observed that the least error in the prediction was shown by modified Mohr Coulomb criterion followed by modified Weibols and Cook criterion. A probability analysis of the error in prediction was also done. | Rukhaiyar Saurav Samadhiya Narendra Kumar | 2017 | International Journal of Mining Science and Technology2017，27，6： | 4 |
您所在的机构暂未开通此部分的功能，请联系管理员