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| 1 | Effect of nitrogen doping on structural and optical properties of ZnO nanoparticles显示文摘Infl uence of nitrogen doping on structural and optical properties of ZnO nanoparticles has been studied. Undoped and N doped ZnO nanoparticles were synthesized via chemical precipitation approach. The prepared samples were characterized through X-ray diffraction(XRD),Transmission electron microscopy(TEM) equipped with Energy dispersive X-ray(EDAX) spectroscopy, UV–visible spectroscopy, Fourier transform infrared(FTIR) spectroscopy and micro-Raman spectroscopy(m RS). Wurtzite phase of undoped as well as 0.5–10% N doped ZnO nanoparticles was con fi rmed through characteristic XRD patterns. The particle size expansion due to N incorporation in ZnO was further revealed by TEM and EDAX analysis where 11 nm size undoped and 18–22 nm size 0.5–10% N doped ZnO(N:ZnO) nanoparticles without any impurity were ascertained. Slight blue-shift in band gap energy, as observed in our case, symbolized weak quantum con fi nement of the prepared nanoparticles. The alterations in vibrational modes of ZnO due to N incorporation, remarkably H substituting at O site and subsequently causing the passivation in N:ZnO nanoparticles, were detected through FTIR analysis. Finally, the effect of the nano-size of crystallite and gradual prominence of N into ZnO lattice due to increase of N doping concentration in prepared nanoparticles was meticulously expatiated though m RS analysis. | Renu Kumari Anshuman Sahai Navendu Goswami | 2015 | Progress in Natural Science:Materials International2015，25，4： | 4 |
| 2 | Celiac plexus neurolysis in the management of unresectable pancreatic cancer:When and how?显示文摘Pancreatic cancer is the second most common abdominal cancer in North America with an estimated 20%resectability at diagnosis,and overall 5-year survival of 5%.Pain is common in pancreatic cancer patients with 70%-80%suffering substantial pain.Celiac plexus neurolysis(CPN)is a technique that can potentially improve pain control in pancreatic cancer while preventing further escalation of opioid consumption.CPN is performed by injecting absolute alcohol into the celiac plexus neural network of ganglia.This review sets out to explore the current status of CPN in non-resectable pancreatic cancer.We will examine:(1)the efficacy and safety of percutaneous-CPN and endoscopic ultrasound guided-CPN;(2)specific technique modifications including bilateral(vs central)injections and celiac ganglia neurolysis;and(3)the issue of CPN timing,early at pancreatic cancer diagnosis vs traditional late use as salvage therapy. | Jonathan M Wyse Yen-I Chen Anand V Sahai | 2014 | World Journal of Gastroenterology2014，20，9： | 4 |
| 3 | 肠道微生态失调与高血压的关系显示文摘新出现的证据表明,肠道菌群是维持生理动态平衡的关键,该研究旨在验证微生态失衡的肠道菌群与高血压相关这一假设,因为遗传、环境和膳食因素对肠道菌群和血压有很大影响。方法:从2种高血压模型大鼠和一个小队列患者人群的粪便样本中提取细菌DNA,用于细菌基因组的分析. | 刘莉 叶鹏 Yang T Santisteban MM Rodriguez V Li E Ahmari N Carvajal JM Zadeh M Gong M Qi Y Zubcevic J Sahay B Pepine CJ Raizada MK Mohamadzadeh M | 2015 | 中华高血压杂志2015，23，5： | 4 |
| 4 | 反思金融深化:新兴市场的稳定与发展显示文摘有深度和流动性良好的金融系统,加上有丰富的金融工具可抵御金融冲击,还可以增加一国金融的稳定性。但是金融发展或许存在一个边界,越过此边界进一步发展其收益或将下降。本文通过研究新兴市场发现:一、大部分新兴市场金融进一步发展仍然对经济的增长和稳定有利。二、金融发展对经济增长的促进作用是倒U型的,在越过高点之后金融深化对要素生产率的促进作用将下降。三、如果金融发展过快,快速深化的金融产业可能引发经济和金融动荡。四、提升金融稳定与金融发展之间没有太大冲突,更好的金融监管有助于提升金融稳定,促进金融发展。五、发展金融机构或金融市场不存在通用的顺序,尽管前者对经济的作用在下降而后者在上升。 | IMF课题组 Ratna Sahay Martin Cihak Papa N’Diaye Adolfo Barajas Ran Bi Diana Ayala Yuan Gao Annette Kyobe Lam Nguyen Christian Saborowski Katsiaryna Svirydzenka Seyed Reza Yousefi 胡妍斌 王辰 | 2015 | 新金融2015，0，10： | 2 |
| 5 | Purification and Characterization of Extracellular Laccase Secreted by Pleurotus sajor-caju MTCC 141显示文摘The effect of lignin containing natural substrates corn-cob, coir-dust, saw-dust, wheat straw and bagasse particles on the extracellular secretion of laccase in the liquid culture growth medium of Pleurotus sajor-caju MTCC 141 has been studied. The culture conditions for maximum secretion of laccase by Pleurotus sajor-caju MTCC 141 have been optimized. Homogeneous preparation of laccase from the culture filtrate of the fungus has been achieved using ammonium sulphate precipitation, anion exchange chromatography on DEAE and gel filtration chromatography on Sephadex G-100. The purified enzyme preparation gave a single protein band in SDS-PAGE analysis indicating a molecular weight of 90 kD. The enzymatic characteristics Km, kcat, pH and temperature optima of the purified laccase have been determined using 2, 6-dimethoxyphenol as the substrate and have been found to be 35 μmol/L, 0.30 min-1, 4.5 and 37oC respectively. The Km values for the other substrate like catechol, m-cresol, pyrogallol and syringaldazine have also been determined which were found to be 216 μmol/L, 380 μmol/L, 370 μmol/L and 260 μmol/L respectively. | R. Sahay R. S. S. Yadav K. D. S. Yadav | 2008 | 生物工程学报2008，24，12： | 2 |
| 6 | Anterior segment optical coherence tomography for identifying muscle status in strabismus surgery显示文摘Dear Sir,Anterior segment optical coherence tomography(AS-OCT)finds very few indications in the domain of strabismus surgery.Current applications remain restricted to determining limbus-muscle insertion distance and anterior segment changes after strabismus surgery.We discuss two cases of operated strabismus surgery where AS-OCT | Brijesh Takkar Pradeep Sharma Ashutosh Kummar Singh Pranita Sahay | 2016 | International Journal of Ophthalmology(English edition)2016，9，6： | 2 |
| 7 | Is Percutaneous Nephrolithotomy in Solitary Kidneys Safe?显示文摘 | Kathie Alexina Wong Arun Sahai Amit Patel Kay Thomas Matthew Bultitude Jonathan Glass | 2013 | Urology2013，，： | 2 |
| 8 | Fatal complication after endoscopic ultrasound-guided celiac plexus neurolysis显示文摘 | A. Gimeno-García A. Elwassief S. Paquin A. Sahai | 2012 | Endoscopy (S )2012，，02： | 2 |
| 9 | 认知无线电的主要限制显示文摘认知无线电指的是通信系统不是工作在一个固定的频段中,而是能自动搜寻一个合适的频段并在该频段上进行通信的体系结构。本文将从基本原理的角度探讨认知无线电系统为避免干扰其工作频段上可能存在的授权用户而要满足的基本要求。首先指出,为了能达到实际应用,认知无线电系统必须能够检测到无法解码的信号。接着说明如何权衡非授权用户的权限、可用空间和主营接收机干扰保护之间的关系。我们证明了在通常情况下,从一个已知零均值星座中检测微弱未知信号的最佳检测器是能量检测器(辐射计)。但是我们发现,已知的导频信号可以起到很大的帮助。因为仅仅在中等噪声不确定性的影响下,辐射计就会失去作用,因此我们又进一步强调对导频信号的需要。最后我们指出了包含不确定性噪声的量化分析,在低于一定的信噪比闽值时,任何检测器都绝对不可能检测到信号。 | Anant Sahai Niels Hoven Rahul Tandra 黄雅铮(译) 唐秀玲(审校) 楼财义(审校) | 2006 | 通信对抗2006，，4： | 2 |
| 10 | Multi-institutional retrospective analysis of FOLFIRI in patients with advanced biliary tract cancers显示文摘BACKGROUND Gemcitabine plus platinum is the standard of care first-line treatment for advanced biliary tract cancers(BTC).There is no established second-line therapy,and retrospective reviews report median progression-free survival(PFS)less than 3 mo on second-line therapy.5-Fluorouracil plus irinotecan(FOLFIRI)is a commonly used regimen in patients with BTC who have progressed on gemcitabine plus platinum,though there is a paucity of data regarding its efficacy in this population.AIM To assess the efficacy of FOLFIRI in patients with biliary tract cancers.METHODS We retrospectively identified patients with advanced BTC who were treated with FOLFIRI at MD Anderson,University of Michigan and Mayo Clinic in Jacksonville.Data were collected on patient demographics,BTC subtype,response per RECIST v1.1,progression and survival.RESULTS Ninety-eight patients were included of which 74(75%)had metastatic and 24(25%)had locally advanced disease at the time of treatment with FOLFIRI.The median age was 60(range,22-86)years.The number of patients with extrahepatic cholangiocarcinoma,gall bladder cancer and intrahepatic cholangiocarcinoma were 10,17 and 71,respectively.FOLFIRI was used as 1st,2nd,3rd or 4th–Nth lines in 8,50,36 and 4 patients,respectively.Median duration on FOLFIRI in the entire cohort was 2.2(range,0.5-8.4)mo.The median PFS and overall survival were 2.4(95%confidence interval(CI):1.7-3.1)and 6.6(95%CI:4.7-8.4)mo,respectively.Median PFS for patients treated with FOLFIRI in 1st,2nd,3rd or 4th–Nth lines were 3.1,2.5,2.3 and 1.5 mo,respectively.Eighteen patients received concurrent bevacizumab(n=13)or EGFR-targeted therapy(n=5)with FOLFIRI,with a median PFS of 2.7 mo(95%CI:1.7-5.1).CONCLUSION In this largest multi-institution retrospective review of 98 patients with BTC treated with FOLFIRI,efficacy appears to be modest with outcomes similar to other cytotoxic chemotherapy regimens. | Jonathan D Mizrahi Valerie Gunchick Kabir Mody Lianchun Xiao Phanikeerthi Surapaneni Rachna T Shroff Vaibhav Sahai | 2020 | World Journal of Gastrointestinal Oncology2020，12，1： | 2 |
| 11 | SNR walls for signal detection显示文摘 | Tandra R Sahai A | 2008 | IEEE Journal of Selected Topics in Signal Processing2008，2，1： | 1 |
| 12 | The nuclear factor HMGB1 mediates hepatic injury after murine liver ischemia reperfusion显示文摘 | Tsung A Sahai R Tanaka H | 2005 | J Exp Med2005，201，7： | 1 |
| 13 | Al-doped ZnO thin films as methanol sensors 显示文摘 | SAHAY P P NATH R K | 2008 | Sens Aetuat B2008，134，2： | 1 |
| 14 | Chromoendoscopywith methylene blue and associated DNA damage inBarrett's esophagus显示文摘 | Olliver JR Wild CP Sahay P | 2003 | Lancet2003，362，9381： | 1 |
| 15 | Phenolic constituents of Rhus semialata leaves显示文摘 | Bagchi A Sahai M Ray AB | 1985 | Planta Medica1985，5，： | 1 |
| 16 | Dry eye:prevalence and attributable risk factors in a hospital-based population 显示文摘 | Sahai A Malik P | 2005 | Indian J Ophthalmol2005，53，2： | 1 |
| 17 | Acute pancreatitis and bacterial translocation显示文摘 | Cicalese L Sahai A Sileri P | 2001 | Dig Dis Sci2001，46，： | 1 |
| 18 | A Model of Surface Site Types on Oxide and Silicate Minerals Based on Crystal Chemistry: Implications for Site Types and Densities, Multi- Site Adsorption, Surface Infrared Spectroscopy, and Dissolution Kinetics显示文摘 | Koretsky C M Sverjensky D A Sahai N | 1998 | Am J Sci1998，298，5： | 1 |
| 19 | Smurfl regulates tumor cell plasticity and motility through degradation of RhoA leading to localized inhibition of contractility 显示文摘 | Sahai E Garcia-Medina R Pouvssequr J | 2007 | J Cell Biol2007，176，1： | 1 |
| 20 | Sprayed ZnO thin films for ethanol sensors显示文摘 | Sahay P P Tewari S | 2005 | Materials Science2005，40，18： | 1 |
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