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Green Synthesis, Characterization and Antibacterial Activity of ZnO Nanoparticles

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American Journal of Plant Sciences 2018年第6期9卷 1279-1291页

作者： Hrishikesh Upadhyaya Soumitra Shome Rajdeep Sarma Sujit tewari Mrinal Kanti Bhattacharya Sanjib Kumar Panda Department of Botany Cotton University Panbazar Guwahati Assam India Department of Botany and Biotechnology Karimganj College Karimganj Assam India Department of Physics Karimganj College Karimganj Assam India Department of Life Science and Bioinformatics Assam University Silchar Assam India

In the present study, mehendi extract (Lawsonia inermis) was used for phytosynthesis of ZnO nanoparticles using 0.1 M Zn(NO3)2 as precursor under alkaline condition using NaOH with vigorous stirring for 2 h. ZnO NPs obtained were characterized by UV-Vis spectroscopy, XRD, SEM and TEM that showed change in shape and size. Hexagonal particles were formed due to plant extract relative to the rod shaped particles in absence of plant extract. Further the antibacterial property of ZnO NP synthesized by green method was more effective than those synthesized in absence of plant extract. The antibacterial activity study of both the synthesized ZnO nanoparticles reveals that the nanoparticles synthesized using mehendi extract are more effective than the particle synthesized without mehendi extract. Thus, the use of leaf extract as capping agent would improve the antibacterial property of ZnO nanoparticle. However, bacteriocidal effect of these nanoparticles varies with respect to the organism tested.

关键词： Antibacterial Activity Green Synthesis ZnO Nanoparticles Lawsonia inermis

Natural products,PGC-1α,and Duchenne muscular dystrophy

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Acta Pharmaceutica Sinica B 2020年第5期10卷 734-745页

作者： Ipek Suntar[ Antoni Sureda Tarun Belwal Ana Sanches Silva Rosa Anna Vacca Devesh tewari Eduardo Sobarzo-Sánchez Seyed Fazel Nabavi Samira Shirooie Ahmad Reza Dehpour Suowen Xu Bahman Yousefi Maryam Majidinia Maria Daglia Giuseppe D’Antona Seyed Mohammad Nabavi Department of Pharmacognosy Faculty of PharmacyGazi UniversityEtilerAnkara 06330Turkey Research Group in Community Nutrition and Oxidative Stress Health Research Institute of the Balearic Islands(IdISBa)and CIBEROBN(Physiopathology of Obesity and Nutrition)University of Balearic IslandsPalmaBalearic Islands E-07122Spain G.B.Pant National Institute of Himalayan Environment and Sustainable Development AlmoraUttarakhand 263643India National Institute for Agricultural and Veterinary Research(INIAV) VairaoVila do CondePortugal Center for Study in Animal Science(CECA) ICETAUniversity of PortoPortoPortugal Institute of Biomembranes Bioenergetics and Molecular BiotechnologiesNational Council of ResearchBari 70126Italy Department of Pharmacognosy School of Pharmaceutical SciencesLovely Professional UniversityPhagwaraPunjab 144411India Laboratory of Pharmaceutical Chemistry Faculty of PharmacyUniversity of Santiago de CompostelaSantiagode Compostela 15782Spain Department of Organic Chemistry Faculty of PharmacyUniversity of Santiago de CompostelaSantiago de Compostela 15782Spain Applied Biotechnology Research Center Baqiyatallah University of Medical SciencesTehran ***Iran Pharmaceutical Sciences Research Center Health InstituteKermanshah University of Medical SciencesKermanshah ***Iran Department of Pharmacology Faculty of MedicineTehran University of Medical SciencesTehran ***Iran Experimental Medicine Research Center Tehran University of Medical SciencesTehran ***Iran The First Affiliated Hospital of USTC Division of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefei 230001China Molecular Medicine Research Center Tabriz University of Medical SciencesTabriz 516615731Iran Drug Applied Research Center Tabriz University of Medical SciencesTabriz 516615731Iran Solid Tumor Research Center Urmia University of Medical SciencesUrmia 571478334Iran Department of Pharmacy University of Naples FedericoⅡNaples 80138Italy International Research Center for Foo

Peroxisome proliferator-activated receptorγ(PPARγ)is a transcriptional coactivator that binds to a diverse range of transcription ***γcoactivator 1(PGC-1)coactivators possess an extensive range of biological effects in different tissues,and play a key part in the regulation of the oxidative metabolism,consequently modulating the production of reactive oxygen species,autophagy,and mitochondrial *** to these findings,a large body of studies,aiming to establish the role of PGC-1 in the neuromuscular system,has shown that PGC-1 could be a promising target for therapies targeting neuromuscular *** these,some evidence has shown that various signaling pathways linked to PGC-1αare deregulated in muscular dystrophy,leading to a reduced capacity for mitochondrial oxidative phosphorylation and increased reactive oxygen species(ROS)*** the light of these results,any intervention aimed at activating PGC-1 could contribute towards ameliorating the progression of muscular ***-1αis influenced by different patho-physiological/pharmacological *** products have been reported to display modulatory effects on PPARγactivation with fewer side effects in comparison to synthetic *** together,this review summarizes the current knowledge on Duchenne muscular dystrophy,focusing on the potential effects of natural compounds,acting as regulators of PGC-1α.

关键词： Muscular dystrophy Natural product Peroxisome proliferator-activated receptor Y coactivator la PPARγactivation Reactive oxygen species Mitochondrial oxidative phosphorylation

Ultrafast Nonlinear Optical and Optical Limiting Properties of Phthalocyanine Thin Films Studied Using Z-Scan

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Materials Sciences and Applications 2011年第5期2卷 299-306页

作者： Soma Venugopal Rao Puliparambil Thilakan Anusha Turaga Shuvan Prashant Debasis Swain Surya P. tewari 不详

We have investigated the nonlinear optical properties, optical limiting thresholds, and figures of merits for five different phthalocyanine thin films, achieved through doping in PMMA polymer, using the Z-scan technique at 800 nm with 2 ps laser pulse excitation. From the open-aperture Z-scan data we derived that these molecules exhibit strong two photon absorption (2PA) with the nonlinear coefficients in the range of 15 - 200 cm/GW. We have also estimated the sign and magnitude of real part of third order nonlinearity through the closed aperture data. Preliminary femtosecond pump-probe data suggests that the lifetimes of excited states are in the sub-100 ps regime for all the molecules in film form. Our studies provide concrete evidence that these phthalocyanines are prospective candidates for multi-photon imaging and optical limiting applications.

关键词： Z-Scan Phthalocyanines Thin Films Picosecond Figures of Merit

Molecular cloning,biochemical and biophysical studies of dihydrodipicolinate reductase of Pseudomonas aeruginosa PAO1

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Molecular cloning,biochemical and biophysical studies of dih...

机器人辅助腹腔镜根治前列腺切除术的外科学习曲线：一名外科医生500病例的经验

第十七届国际生物物理大会;第十二届中国生物物理大会

作者： Vivek Anand Ankur Gautam Dipti Sareen Tej P.Singh Rupinder tewari Department of Biotechnology Panjab universityChandigarhIndia Bioinformatics Centre Institute of Microbial TechnologyChandigarhIndia Department of Biochemistry Panjab UniversityChandigarhIndia Department of Biophysics All India Institute of Medical SciencesNew DelhiIndia Centre for Microbial Biotechnology Panjab UniversityChandigarhIndia

Dihydrodipicolinate reductase(DHDPR,E.C.1.***.1.26) is one of the key enzyme of the lysine biosynthetic pathway present in bacteria forming L-lysine and diaminopimelate(DAP).It is considered to be a potential drug target because bacteria immediately get lysed in the absence of DAP while it is absent in *** we have cloned,overexpressed and studied biochemical and biophysical properties of dihydrodipicolinate reductase (dapB) of Pseudomonas aeruginosa(Pa) *** was purified to homogeneity using nickel affinity

关键词： dihydrodipicolinate reductase

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Asian Journal of Andrology 2014年第5期16卷 728-734,I0009页

作者： Yen-Chuan OU Chun-Kuang Yang Kuangh-Si Chang John Wang Siu-Wan Hung Min-Che Tung Ashutosh K tewari Vipul R Patel Division of Urology Department of Surgery Taichung Veterans General Hospital Taichung Taiwan China School of Medicine National Yang-Ming University Taipei Taiwan China Department of Research Taichung Veterans General Hospital Taichung Taiwan China Department of Pathology Taichung Veterans General Hospital Taichung Taiwan China Department of Radiation Taichung Veterans General Hospital Taichung Taiwan China Division of Urology Department of Surgery Tungs' Taichung MetroHarbor Hospita Taichung Taiwan China New York Presbyterian Hospital Weill Cornell Medical College New York NY USA Global Robotics Institute Florida Hospital Orlando Florida USA

To analyze the learning curve for cancer control from an initial 250 cases （Group I） and subsequent 250 cases （Group II） of robotic-assisted laparoscopic radical prostatectomy （RALP） performed by a single surgeon. Five hundred consecutive patients with clinically localized prostate cancer received RALP and were evaluated. Surgical parameters and perioperative complications were compared between the groups, Positive surgical margin （PSM） and biochemical recurrence （BCR） were assessed as cancer control outcomes. Patients in Group II had significantly more advanced prostate cancer than those in Group I （22.2% vs 14.2%, respectively, with Gleason score 8-10, P = 0.033; 12.8% vs 5.6%, respectively, with clinical stage T3, P = 0.017）. The incidence of PSM in pT3 was decreased significantly from 49% in Group I to 32.6% in Group Ih A meaningful trend was noted for a decreasing PSM rate with each consecutive group of 50 cases, including pT3 and high-risk patients. Neurovascular bundle （NVB） preservation was significantly influenced by the PSM in high-risk patients （84.1% in the preservation group vs 43.9% in the nonpreservation group）. The 3-year, 5-year, and 7-year BCR-free survival rates were 79.2%, 75.3%, and 70.2%, respectively. In conclusion, the incidence of PSM in pT3 was decreased significantly after 250 cases. There was a trend in the surgical learning curve for decreasing PSM with each group of 50 cases. NVB preservation during RALP for the high-risk group is not suggested due to increasing PSM.

关键词： cancer control learning curve prostate cancer prostatectomy robotics surgical margin

Extending the Economic Life of the Ogallala Aquifer with Water Conservation Policies in the Texas Panhandle

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Journal of Water Resource and Protection 2017年第3期9卷 255-270页

作者： Lal K. Almas Bridget L. Guerrero David G. Lust Hina Fatima Rachna tewari Robert Taylor Department of Agricultural Sciences West Texas A & M University Canyon TX USA Fatima Jinnah Women University Rawalpindi Pakistan Department of Agriculture Geosciences and Natural Resources The University of Tennessee at Martin Martin TN USA Institutional Research & Effectiveness Clarendon College Clarendon TX USA

The continued decline in the availability of water from the Ogallala Aquifer in the Texas Panhandle has led to an increased interest in conservation policies designed to extend the life of the aquifer and sustain rural economies. Four counties were chosen for evaluation. This study evaluates the effectiveness of five policies in terms of changes in the saturated thickness, crop mix, water use per acre, and the net present value of farm profits over a 60-year planning horizon. The dynamic optimization models were developed using GAMS for the baseline as well as one for all five of the policy alternatives for each county. Results indicate that the policy scenarios of biotechnology adoption and a water use restriction will conserve the most water among the policies analyzed. In terms of economic returns, the biotechnology adoption policy by far provides the greatest benefit to producers due to yield increases that are estimated with current annual growth rates in new seed varieties. The water use restriction policy, on the other hand, has the lowest net present value of returns, indicating that conservation is accompanied with significant costs to producers. The irrigation adoption technology scenario is the next best policy in terms of net present value of returns (following biotechnology);however, it ranks last in terms of reducing aquifer depletion. It is important to note that while the models do not perfectly predict the factors being evaluated, it is the basis for comparison between the policy scenarios which are important. These comparisons will aid policy makers in determining the most effective strategy to conserve water while simultaneously considering the economic costs to producers. In addition, the results of this study can be applied to other areas facing similar conditions, either currently or in the future, throughout the Texas Panhandle.

关键词： Groundwater Conservation Irrigated Agriculture Ogallala Aquifer Texas Panhandle Water Management Policy

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亚麻配合力研究

中国麻作 1993年第1期15卷 47-48,F003页

作者： V.Singh O.P.Pachauri S.N.tewari 路颖吴广文

亚麻为人类创造出巨大贡献,在印度同世界上许多国家一样,亚麻也是重要的油料和纤维作物之一。随着各种遗传分析技术的发展,经济开发利用杂种优势导致产量的提高。然而对油麻两用的研究较少。因此本研究目的是对6个不同起源的油用型和纤... 详细信息

亚麻为人类创造出巨大贡献,在印度同世界上许多国家一样,亚麻也是重要的油料和纤维作物之一。随着各种遗传分析技术的发展,经济开发利用杂种优势导致产量的提高。然而对油麻两用的研究较少。因此本研究目的是对6个不同起源的油用型和纤用型亚麻进行配合力估份。

关键词：亚麻配合力

联合森林管理计划的经济学分析——印度古吉拉特邦Soliya村的案例研究

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林业与社会 1997年第3期5卷 17-19页

作者： D.D.tewari 赵文霞

联合森林管理(JFM)是国家和当地村社共同管理森林。在该计划下,土地的法人是政府或林业部门,但村社是森林资源的联合管理者,并被赋予了一定的用益权,分享林产品利益。JFM具有大量明显的生态、社会和经济效益,但村社最关心的是经济效益。... 详细信息

联合森林管理(JFM)是国家和当地村社共同管理森林。在该计划下,土地的法人是政府或林业部门,但村社是森林资源的联合管理者,并被赋予了一定的用益权,分享林产品利益。JFM具有大量明显的生态、社会和经济效益,但村社最关心的是经济效益。JFM活动的经济活力取决于:(1)造林计划的财政可行性;(2)村社与林业部门利益分享的比例;(3)村社成员间分享利益和成本的标准和法则。本文根据Soliya村的案例研究,分析和评价如何使JFM持续发展。

关键词：经济学分析森林管理林业部门管理模型利益分享人工林森林保护案例研究经济利益村社

Prospects of controlling Blackleg of Canola/Rapeseed with a bacterium

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Prospects of controlling Blackleg of Canola/Rapeseed with a ...