检索结果-南通市图书馆

物理 1989年第4期18卷 201-204,252页

作者： a.khurana 张宏

静脉注射纳米氧化铁无创性MRI检查监测巨噬细胞迁移至干细胞移植物的研究

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2012年第6期 580-580页

作者： a.khurana H.Nejadnik R.Gawande S.Lee S.Messing 魏璐郑晶晶 Department of Radiology Molecular Imaging Program at StanfordStanford University School of Medicine725 Welch RdRoom 1665StanfordCA 94305-5654

摘要目的发展适用于临床的成像技术,以监测膝关节关节炎病人巨噬细胞迁移至具有活性的和凋亡的基质相关干细胞移植物(MASI)的差别。材料与方法本研究得到动物保护与使用委员会批准。给6只无胸腺小鼠静脉注射纳米氧化铁(0.5mmolFe/kg),

关键词：巨噬细胞吞噬细胞 ADSC 基质干细胞 MRI 氧化铁静脉注射骨软骨缺损纳米

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

移植后MRI跟踪干细胞采集前标记的铁粒子

国际医学放射学杂志 2013年第6期 585-585页

作者： a.khurana F.Chapelin G.Beck O.D.Lenkov J.Donig H.Nejadnik 陶应伟 Department of Radiology and Molecular Imaging Program at Stanford

摘要目的确定静脉纳米氧化铁是否可以有效地在体内标记骨髓间充质干细胞(MSC),以及追踪干细胞移植。材料与方法该研究经过动物保护机构和使用委员会的批准。

关键词：体外标记氧化铁纳米间充质干细胞 MRI

PET/CT鉴别儿童正常胸腺与前纵隔淋巴瘤及复发

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

国际医学放射学杂志 2012年第2期 184-184页

作者： R.S.Gawande a.khurana S.Messing D.Zhang R.T.Castaeda R.E.Goldsby 谭艳 Department of Radiology Stanford University School of MedicineStanfordCalif Pediatric Radiology SectionLucile Packard Children's Hospital725 Welch RdStanfordCA 94305-565

目的评估正电子发射体层成像(PET)/CT在鉴别儿童正常胸腺与前纵隔淋巴瘤及复发的作用。方法该研究获得机构审查委员会批准并免除病人知情同意书,该研究遵循HIPAA。对75例小儿肿瘤病人的282次18F-氟脱氧葡萄

关键词：前纵隔淋巴瘤 PET/CT 胸腺淋巴组织儿童 CT

Synergistic Effect of Metal Nanoparticles on the Antimicrobial Activities of Antibiotics against Biorecycling Microbes

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2016年第6期32卷 524-532页

作者： Chandni khurana Purnima Sharma O.E Pandey Bhupendra Chudasama Laboratory of Nanomedicine School of Physics and Materials ScienceThapar UniversityPatiala 147004India Department of Applied Sciences Chandigarh UniversityMohali 160055India Department ofBiotechnology Thapar UniversityPatiala 147004India

Biorecycling microbes, which have critical functionalities in natural cycles, are essential to sustain eco-system of the earth. Any alterations in these cycles caused by the mutations of microbes could be a potential threat to life on earth. Antibiotics leached from pharmaceutical waste, animal food and agribusiness prod- ucts are accumulating in the environment. Metal nanoparticles are also accumulating in environment because of their extensive use as biocidal agent in domestic products. Interaction of antibiotics and metal nanoparticles with eco-ffiendly microorganisms has a potential to alter the ecosystem of the earth. In this article, we have studied the antibacterial activities of silver and copper nanoparticles and their for- mulations with antibiotics, tetracycline, and kanamycin against biorecycling microbes, Bacillus subtilis and Pseudomonas fluorescens. Strong synergistic effect of metal nanoparticles on the antimicrobial ac- tivities of commercial antibiotics has been observed. Antimicrobial activity of tetracycline improves by 286%-346% and 0%-28% when being tested in the presence of 250 ppm of silver and copper nanoparticles, respectively. For kanamycin, the improvement is 154%-289% for silver and 3%-20% for copper nanoparticles. Irrespective of the antibiotics and tested organisms, synergy is more prominent for silver nanoparticles even at their minimum active concentration （100 ppm）. This study demonstrates that the combination of metal nanoparticles with antibiotics could be more fatal to ecosystem than either the metal nanoparticles or the antibiotics alone.

关键词： Synergy Nanoparticles Antibiotics Biorecycling microbes Antibacterial activities

A new green approach for the synthesis of 12-aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives using task specific acidic ionic liquid[NMP]H_2PO_4

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2014年第10期25卷 1336-1340页

作者： Harjinder Singh Sudesh Kumari Jitender M.khurana Department of Chemistry University of Delhi

12-Aryl-8,9,10,12-tetrahydrobenzo[a]xanthene-11-one derivatives were synthesized by a convenient and environmentally benign procedure involving multicomponent condensation reactions of substituted aromatic aldehydes with 2,7-dihydroxynaphthalene/2-naphthols/2,6-dihydroxynaphthlene and cyclic 1,3-dicarbonyl compounds in task specific acidic ionic liquid[NMP]HPOat 80 ℃.This protocol has proved to be efficient in terms of good yields,operational simplicity,easy workup,recyclability of reaction medium/catalyst,and short reaction time.

关键词： Benzo[a]xanthenes Ionic liquids Multicomponent reactions Green synthesis

Subcutaneous and breast metastasis from asymptomatic gallbladder carcinoma

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary & Pancreatic Diseases International 2009年第2期8卷 209-211页

作者： Pankaj Kumar Garg Nita.khurana Niladhar S Hadke Department of Surgery Maulana Azad Medical College and Lok Nayak Hospital Department of Pathology Maulana Azad Medical College and Lok Nayak Hospital

BACKGROUND:Though gallbladder carcinoma is asso- ciated with early lymphatic and hematogenous spread, the only common extra-abdominal site of metastasis is *** carcinoma metastasizing to breast and subcutaneous tissue is not known. METHOD:This report describes an interesting and unusual case of asymptomatic gallbladder carcinoma presenting with subcutaneous and breast metastasis. RESULTS:A 42-year-old woman presented with multiple subcutaneous nodules over the abdominal wall,anterior chest wall,back and in bilateral *** needle aspiration cytology(FNAC)of these nodules revealed metastatic *** patient was investigated for a primary *** ultrasound of the abdomen followed by a contrast-enhanced CT scan showed a growth in gallbladder,infiltrating the liver with multiple hepatic ***-guided FNAC from the growth in the gallbladder revealed *** was diagnosed as a case of metastatic adenocarcinoma of the gallbladder and palliative combination chemotherapy with gemcitabine and carboplatin was *** she developed jaundice and deteriorated dramatically in a short span of *** specific therapy could be started and she was given supportive *** died within three weeks of diagnosis due to hepatic encephalopathy. CONCLUSIONS:This report highlights an unusual metastasis of gallbladder carcinoma to the breast and subcutaneous tissue presenting as multiple lesions,which has never been reported in the English *** were unknown sites of metastasis for carcinoma of the ***,bilateral multiple metastatic lesions to breast are also very rare.

关键词： gallbladder carcinoma breast metastasis subcutaneous metastasis

One pot three component synthesis of spiro [indolo-3,10’-indeno[1,2-b]quinolin]-2,4,11’-triones as a new class of antifungal and antimicrobial agents

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2017年第1期28卷 136-142页

作者： Kalawati Meena Sudesh Kumari Jitender M.khurana Amita Malik Chetan Sharma Harsh Panwar Department of Chemistry University of Delhi Delhi 110007 India Dyal Singh College University of Delhi Lodhi Road Delhi 110003 India Department of Dairy Microbiology College of Dairy Science and Technology Guru Angad Dev Veterinary and Animal Science UniversityLudhiana 141004 India

A simple and efficient three component procedure has been developed for the synthesis of highly substituted spiro[indolo-3,100-indeno[1,2-b]quinolin]-2,4,11＇-triones by one pot three component condensation of enaminones, isatin and indane-1,3-dione in ethanol：water（1：1） in presence of ceric ammonium nitrate（CAN） as catalyst. This method provides several advantages such as lesser reaction time, high yield of products and operational simplicity. The antimicrobial activity of some of the compounds has been investigated against six microbial strains, some of the tested compounds showed good antimicrobial activity.

关键词： Multicomponent reactions Isatin Spirooxindole Heterocycles Antimicrobial activity

柴桂叶提取物介导的银纳米粒子的绿色合成及其在吡喃并吡唑衍生物合成中的应用（英文）

在线全文

学校读者我要写书评

暂无评论

催化学报 2015年第7期36卷 1042-1046页

作者： Sneha Yadav Jitender M.khurana Department of Chemistry University of Delhi

A novel, biochemical, and eco-friendly method has been developed for the synthesis of Ag nanoparticles using an aqueous leaf extract of readily accessible Cinnamomum tamala as reducing and stabilizing agents. These Ag nanoparticles were used to catalyze the synthesis of pyranopyrazoles. The green nature and ease of recovery and reusability of the catalyst, together with high yields of products, make this protocol attractive and useful.

关键词：绿色合成叶提取物银纳米粒子银纳米颗粒介导肉桂生态友好可重用性

Multicomponent domino process for the synthesis of some novel 5-(arylidene)-3-((1-aryl-1H-1,2,3-triazol-4-yl)methyl)-thiazolidine-2,4-diones using PEG-400 as an efficient reaction medium and their antimicrobial evaluation

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2015年第1期26卷 50-54页

作者： Jayant Sindhu Harjinder Singh J.M.khurana Chetan Sharma K.R.Aneja Department of Chemistry Delhi University Department of Microbiology Kurukshetra University

A series of novel thiazolidinedione-triazole hybrids were synthesized by one pot reaction between thiazolidine-2.4-dione,substituted aryl aldehydes,piopargyl bromide and substituted aryl azides using piperidine,CuSO4· 5H2O and sodium ascorbate as catalysts in PEG-400 as a highly efficient and green *** thiazolidinedione-triazole hybrids were subjected to in vitro antibacterial activity against four strains *** *** subtilis,Escherichia coli,Pseudomonas aeruginosa and antifungal activity against two fungal strains namely,Aspergillus niger and Aspergillus flavus.

关键词： Multicomponent AntibacterialAntifungal 1,2,3-Triazoles thiazolidine-2,4-diones