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ChemPhysMater 2024年第1期3卷 83-93页

作者： Mylarappa M n.Raghavendra n.R.Bhumika C.H.Chaithra B.n.nagalaxmi k.n.shravana kumara Department of Chemistry Sri Jagadguru Renukacharya College of ScienceArts&CommerceBengaluru 560009India Department of Chemistry East West Institute of TechnologyBengaluru 560091India Department of Chemistry Maharani Lakshmi Ammanni College for WomenBengaluru 560012India

In view of the current study’s demonstration of the synthesis of clay-doped ZnO composites,we present a low-cost method for producing clay-metal oxide(clay/ZnO).Utilizing the solution combustion technique,a composite of clay/ZnO was produced utilizing citric acid as both a fuel and a complexing *** hexagonal unit cell structure of the created clay/ZnO may be seen using XRD *** ZnO-infused clay was visible in FE-SEM micrographs as homogenous,sphere-shaped *** possible involvement of clay/ZnO photocatalytic activity in the UV-induced photodegradation of malachite green dye was *** 90%degradation rate shows the composite’s outstanding photocatalytic degradation *** resulting substance was electrochemically analyzed using a constructed electrode in 0.1 M kOH *** increased its sensor capabilities,which now include chemical and biomolecule sensors,and it excelled in cyclic voltammetry-based redox potential *** efficiently evaluate chemically synthesized nPs for electrochemical,sensing,and photocatalytic applications,this study intends to create a solution combustion procedure for the synthesis of clay/ZnO nanocomposite using urea as fuel.

关键词： Clay Clay/ZnO Photocatalytic Electrochemical sensors

Characterization of free carbon in the as-thermolyzed Si-B-C-n ceramic from a polyorganoborosilazane precursor

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Journal of Advanced Ceramics 2013年第4期2卷 325-332页

作者： Adhimoolam Bakthavachalam kOUSAALYA Ravi kumara Shanmugam PACkIRISAMY Materials Processing Section Department of Metallurgical and Materials EngineeringIndian Institute of Technology MadrasChennai 600036Tamil NaduIndia Analytical Spectroscopy and Ceramics Group PCM EntityVikram Sarabhai Space CentreThiruvananthapuram 695022India

Polyorganoborosilazane((B[C_(2)H_(4)-Si(CH_(3))nH]_(3))n)was synthesized via monomer route from a single-source precursor and thermolyzed at 1300℃in argon *** as-thermolyzed Si-B-C-n ceramic was characterized using X-ray diffraction(XRD)and Raman *** crystallization behavior of silicon carbide in the as-thermolyzed amorphous Si-B-C-n matrix was understood by XRD studies,and the crystallite size calculated using Scherrer equation was found to increase from 2 nm to 8 nm with increase in dwelling ***,Raman spectroscopy was used to characterize the free carbon present in the as-thermolyzed *** peak positions,intensities and full width at half maximum(FWHM)of D and G bands in the Raman spectra were used to study and understand the structural disorder of the free *** G peak shift towards 1600 cm-1 indicated the decrease in cluster size of the free *** cluster diameter of the free carbon calculated using Tk(Tuinstra and koenl)equation was found to decrease from 6.2 nm to 5.4 nm with increase in dwelling time,indicating increase in structural disorder.

关键词： synthesis polyorganoborosilazane precursor-derived ceramic Si-B-C-n Raman spectroscopy free carbon

对金龟子具有杀虫专一性的苏云金芽孢杆菌综述(英文)

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Insect Science 2000年第4期7卷 359-375页

作者： Hidetaka Hori,n.Selvamuhu,kumara wami,Tohru Hayakawa,Toshaki Mitsui 新潟大学自然科学与技术研究生院分子生命科学实验室!新潟日本新潟大学自然科学与技术研究生院分子生命科学实验室!新潟日本新潟大学自然科学与技术研究生院分子生命科学实验室!新潟日本新潟大学自然科学与技术研究生院分子生命科学实验室!新潟日本新潟大学自然科学与

自从 190 1年Ishiwata首次报导猝倒菌以来 ,已有数千篇有关苏云金芽孢杆菌的论文相继发表。在苏云金芽孢杆菌 (Bt)的害虫生物防治领域中首次发现对鳞翅目昆虫有杀虫专一性的Bt菌株以后 ,又有了划时代的进展。Goldberg和Margalit发现了... 详细信息

自从 190 1年Ishiwata首次报导猝倒菌以来 ,已有数千篇有关苏云金芽孢杆菌的论文相继发表。在苏云金芽孢杆菌 (Bt)的害虫生物防治领域中首次发现对鳞翅目昆虫有杀虫专一性的Bt菌株以后 ,又有了划时代的进展。Goldberg和Margalit发现了杀双翅目幼虫的以色列亚种 (subsp .isrealensis) ,以及kreig等人发现了对某些鞘翅目幼虫有毒的拟步行甲亚种 (sbusp .tenebrionis)。 1992年 ,Ohba等分离到了日本亚种(subsp .japonensis)对金龟子有专一性杀虫作用的菌株Buibui。该菌株及与之有关的研究进展即是本文讨论的重点。这些发现不仅丰富了苏云金芽孢杆菌科学 ,也丰富了生物防治的应用策略。另一方面 ,在毒素蛋白结构及其杀虫机制的分子生物学和生物化学领域也已获巨大进展。但对杀虫机制尚未完全明了。例如 ,对杀虫蛋白与中肠上皮细胞原生质膜上的受体蛋白的相互作用就知之甚少。这一领域在某种程度上还是众说纷纭。展论这些令人兴奋而又难解的课题将最终促成二十一世纪可持续农业的建立。

关键词：苏云金杆菌日本变种Buibui菌株金龟子甲虫苏云金杆菌杀鞘翅目昆虫毒素

Efficient dye-sensitized solar cells from mesoporous zinc oxide nanostructures sensitized by n719 dye

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Journal of Semiconductors 2018年第3期39卷 25-30页

作者： G.R.A.kumara U.Deshapriya C.S.k.Ranasinghe E.n.Jayaweera R.M.G.Rajapakse national Institute of Fundamental Studies Hantana RoadKandy20000Sri Lanka Postgraduate Institute of Science University of PeradeniyaPeradeniya20400Sri Lanka Derpatment of Chemistry Faculty of ScienceUniversity of PeradeniyaPeradeniya20400Sri Lanka

Dye-sensitized solar cells（DSCs） have attracted a great deal of attention due to their low-cost and high power conversion efficiencies. They usually utilize an interconnected nanoparticle layer of TiO2 as the electron transport medium. From the fundamental point of view, faster mobility of electrons in Zn O is expected to contribute to better performance in DSCs than TiO2, though the actual practical situation is quite the opposite. In this research, we addressed this problem by first applying a dense layer of Zn O on FTO followed by a mesoporous layer of interconnected Zn O nanoparticle layer, both were prepared by spray pyrolysis technique. The best cell shows a power conversion efficiency of 5.2% when the mesoporous layer thickness is 14 μm and the concentration of the n719 dye in dye coating solution is 0.3 m M, while a cell without a dense layer shows 4.2% under identical conditions. The surface concentration of dye adsorbed in the cell with a dense layer and that without a dense layer are5.00 × 10^（-7） and 3.34 × 10^（-7） mol/cm^2, respectively. The cell with the dense layer has an electron lifetime of-54.81 ms whereas that without the dense layer is 11.08 ms. As such, the presence of the dense layer improves DSC characteristics of Zn O-based DSCs.

关键词： dye-sensitized solar cell mesoporous ZnO layer ZnO dense layer DSC characteristics

Mycoendophytic diversity and their antimicrobial potential from two epiphytic orchids of the Western Ghats forests of India

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Studies in Fungi 2020年第1期5卷 113-124页

作者： nuthan BR Rakshith D Marulasiddaswamy kM Ramesha kP Chandra Mohana n Sampath kumara kk Satish S Department of Studies in Microbiology University of MysoreManasagangotriMysuru 570006KarnatakaIndia Department of Microbiology Yuvaraja’s CollegeUniversity of MysoreMysuru 570005KarnatakaIndia Department of Studies in Biotechnology University of MysoreManasagangotriMysuru 570006KarnatakaIndia Government Pre-University College Davangere 577002KarnatakaIndia

The epiphytic plants belong to a group that harmlessly grows on other plants by utilizing the nutrition from the host plants with their unique adaptation features along with symbiotic associations with fungi or *** various biological activities exhibited by the mycoendophytes inhabiting medicinally-important epiphytic orchids serve as the primary source of novel drug leads,industrially-essential enzymes,and plant growth-promoting *** the present study,a total of 956 culturable mycoendophytes out of 1600 segments belonging to 17 genera were isolated from different tissue parts of Trias stocksii and Dendrobium *** Xylariaceae taxa were the predominant mycoendophytes present in both plants,followed by Pestalotiopsis sp.,Colletotrichum sp.,and Fusarium *** estimation of the Shannon-Wiener and Simpson diversity indices showed that the bulbs of *** have the highest species diversity index and the stems of *** the *** highest species richness was observed in the leaves of *** and the lowest in the leaves of ***,*** harbored more mycoendophytes along with the highest diversity indices compared to *** antimicrobial evaluation revealed that Xylaria *** a higher potential of producing anti-infectives and opens a new arena for industrial exploration.

关键词： Antimicrobial activity Dendrobium herbaceum Diversity indices Mycoendophytes Trias stocksii Xylaria sp

Mechanical, thermal and fire nanoclay/vinylester retardation behaviours of nanocomposites

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Frontiers of Materials Science 2011年第4期5卷 401-411页

作者： k. R. VISHnU MAHESH H. n. nARASIMHA MURTHY B. E. kumara SWAMY S. C. SHARMA R. SRIDHAR niranjan PATTAR M. kRISHnA B. S. SHERIGARA Department of P. G. Studies and Research in Industrial Chemistry Kuvempu University Shankaraghatta Shimoga 577451 Karnataka India Department of Mechanical Engineering R. V. College of Engineering Bangalore 560059 Karnataka India Tumkur University Tumkur 572103 Karnataka India

The dispersion of montmorillonite （MMT） in vinylester for preparing nanoclay/vinylester gel coat was reported. Two sets of MMT/vinylester specimens, namely Type I and Type 2, were prepared for comparative studies. Type I specimens were prepared using ultrasonication only, and Type 2 specimens were prepared using both ultrasonication and twin-screw extrusion. According to XRD and TEM results, Type 2 specimens showed lower levels of nanoclay agglomeration and higher levels o! exfoliation. DSC results showed that the glass transition temperatures of Type 2 specimens are higher than those of Type 1 specimens. TGA results showed that the residual weight of 4 wt.% MMT/vinylester of Type 1 was 7.38%, while the corresponding value of Type 2 was 13,5%, indicating lower thermal degradation in the latter. MMTt vinylester/glass and MMT/vinylester/carbon specimens were fabricated and tested for mechanical and fire retardation behaviours. Type 2 based nanocomposite laminates showed greater values of ultimate tensile strength, flexural strength, interlaminar shear strength, impact strength, horizontal burning rate, and vertical burning rate than Type 1 based laminates. SEM images of tensile fractured surfaces revealed that Type 2 based laminates have no or less agglomeration of nanoclay than Type 1 based laminates.

关键词： twin-screw extrusion montmorillonite nanoclay nanocomposite vinylester

Plasma MMP-2 and MMP-7 levels are elevated first month after surgery and may promote growth of residual metastases

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World Journal of Gastrointestinal Oncology 2021年第8期13卷 879-892页

作者： HMC Shantha kumara Hiromichi Miyagaki Sajith A Herath Erica Pettke Xiaohong Yan Vesna Cekic Richard L Whelan Division of Colon and Rectal Surgery Department of SurgeryLenox Hill HospitalNorthwell HealthNew YorkNY 10028United States Department of Gastroenterological Surgery Osaka UniversitySuita 565-0862OsakaJapan Analytic Department NovartisMorris PlainsNJ 07905United States Department of Surgery Swedish Medical CenterSeattleWA 98122United States Department of Surgery Donald and Barbara Zucker School of Medicine at Hofstra/NorthwellHempsteadNY 11549United States

BACkGROUnD MMP-2 also known as gelatinase A and MMP-7(matrilysin)are members of the zinc-dependent family of MMPs(Matrix metalloproteinase).MMP-2 and MMP-7 are remodeling enzymes that digest extracellular matrix;MMP-2 is extensively expressed during development and is upregulated at sites of tissue damage,inflammation,and in stromal cells of metastatic ***-7 is expressed in the epithelial cells and in a variety of cancers including colon *** MMP-2 and MMP-7 levels were assessed before and after minimally invasive colorectal resection for cancer *** To determine plasma MMP-2 and MMP-7 levels before and after minimally invasive colorectal resection for cancer *** Patients enrolled in a plasma bank for whom plasma was available were *** obtained from preoperative(Preop)and postoperative blood samples was *** colorectal cancer(CRC)patients who underwent elective minimally invasive cancer resection with preop,post-operative day(POD)1,3 and at least 1 late postop sample(POD 7-34)were *** samples were bundled into 7 d blocks(POD 7-13,14-20,etc.)and treated as single time *** MMP-2 and MMP-7 levels were determined via enzyme-linked immunosorbent assay in *** Total 88 minimally invasive CRC resection CRC patients were studied(right colectomy,37%;sigmoid,24%;and LAR/AR 18%).Cancer stages were:1,31%;2,30%;3,34%;and 4,5%.Mean Preop MMP-2 plasma level(ng/mL)was 179.3±40.9(n=88).Elevated mean levels were noted on POD1(214.3±51.2,n=87,Pn=80,Pn=65,Pn=25,Pn=17,Pnd POD 28-34(255.4±59.7,n=15,Pn Preop MMP-7 level was 3.9±1.9(n=88).no significant differences were noted on POD 1 or 3,however,significantly elevated levels were noted on POD 7-13(5.7±2.5,n=65,Pn=25,Pn=17,P=0.002)and on POD 28-34(6.8±3.3,n=15 P<0.001,)vs p

关键词： Effects of surgery Colorectal resection Colorectal cancer Plasma MMP-2 and MMP-7 levels Angiogenesis

Plasma chitinase 3-like 1 is persistently elevated during first month after minimally invasive colorectal cancer resection

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World Journal of Gastrointestinal Oncology 2016年第8期8卷 607-614页

作者： HMC Shantha kumara David Gaita Hiromichi Miyagaki Xiaohong Yan Sonali AC Hearth Linda njoh Vesna Cekic Richard L Whelan Division of Colon and Rectal Surgery Department of Surgery Mount Sinai West Hospital Department of Gastroenterological Surgery Osaka University

AIM: To assess blood chitinase 3-like 1(CHi3L1) levels for 2 mo after minimally invasive colorectal resection(MICR) for colorectal cancer(CRC). METHODS: CRC patients in an Institutional Review Board approved data/plasma bank who underwent elective MICR for whom preoperative(PreO p), early postoperative(PostO p), and 1 or more late PostO p samples [postoperative day(POD) 7-27] available were included. Plasma CHi3L1 levels(ng/m L) were determined in duplicate by enzyme linked immunosorbent assay. RESULTS: PreOp and PostOp plasma sample were available for 80 MICR cancer patients for the study. The median PreOp CHi3L1 level was 56.8 CI: 41.9-78.6 ng/mL(n = 80). Significantly elevated(P n plasma levels(ng/mL) over PreOp levels were detected on POD1(667.7 CI: 495.7, 771.7; n = 79), POD 3(132.6 CI: 95.5, 173.7; n = 76), POD7-13(96.4 CI: 67.7, 136.9; n = 62), POD14-20(101.4 CI: 80.7, 287.4; n = 22), and POD 21-27(98.1 CI: 66.8, 137.4; n = 20, P = 0.001). no significant difference in plasma levels were noted on POD27-41. COnCLUSIOn: Plasma CHi3L1 levels were significantly elevated for one month after MICR. Persistently elevated plasma CHi3L1 may support the growth of residual tumor and metastasis.

关键词： Colorectal cancer Recurrence Minimally inasive colorectal resection Chitinase 3-like 1 Metastasis

Measurement of the integrated luminosity of the Phase 2 data of the Belle Ⅱ experiment

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Chinese Physics C 2020年第2期44卷 1-12页

作者： F.Abudinén I.Adachi P.Ahlburg H.Aihara n.Akopov A.Aloisio F.Ameli L.Andricek n.Anh ky D.M.Asner H.Atmacan T.Aushev V.Aushev T.Aziz k.Azmi V.Babu S.Baehr S.Bahinipati A.M.Bakich P.Bambade Sw.Banerjee S.Bansal V.Bansal M.Barrett J.Baudot A.Beaulieu J.Becker P.k.Behera J.V.Bennett E.Bernieri F.U.Bernlochner M.Bertemes M.Bessner S.Bettarini V.Bhardwaj F.Bianchi T.Bilka S.Bilokin D.Biswas G.Bonvicini A.Bozek M.Bračko P.Branchini n.Braun T.E.Browder A.Budano S.Bussino M.Campajola L.Cao G.Casarosa C.Cecchi D.Červenkov M.-C.Chang P.Chang R.Cheaib V.Chekelian Y.Q.Chen Y.-T.Chen B.G.Cheon k.Chilikin H.-E.Cho k.Cho S.Cho S.-k.Choi S.Choudhury D.Cinabro L.Corona L.M.Cremaldi S.Cunliffe T.Czank F.Dattola E.De La Cruz-Burelo G.De nardo M.De nuccio G.De Pietro R.de Sangro M.Destefanis S.Dey A.De Yta-Hernandez F.Di Capua S.Di Carlo J.Dingfelder Z.Doležal I.Domínguez Jiménez T.V.Dong k.Dort S.Dubey S.Duell S.Eidelman M.Eliachevitch T.Ferber D.Ferlewicz G.Finocchiaro S.Fiore A.Fodor F.Forti A.Frey B.G.Fulsom M.Gabriel E.Ganiev M.Garcia-Hernandez R.Garg A.Garmash V.Gaur A.Gaz U.Gebauer A.Gellrich J.Gemmler T.Geßler R.Giordano A.Giri B.Gobbo R.Godang P.Goldenzweig B.Golob P.Gomis P.Grace W.Gradl E.Graziani D.Greenwald C.Hadjivasiliou S.Halder k.Hara T.Hara O.Hartbrich k.Hayasaka H.Hayashii C.Hearty M.T.Hedges I.Heredia de la Cruz M.Hernández Villanueva A.Hershenhorn T.Higuchi E.C.Hill H.Hirata M.Hoek S.Hollitt T.Hotta C.-L.Hsu Y.Hu k.Huang T.Iijima k.Inami G.Inguglia J.Irakkathil Jabbar A.Ishikawa R.Itoh M.Iwasaki Y.Iwasaki S.Iwata P.Jackson W.W.Jacobs D.E.Jaffe E.-J.Jang H.B.Jeon S.Jia Y.Jin C.Joo J.kahn H.kakuno A.B.kaliyar G.karyan Y.kato T.kawasaki H.kichimi C.kiesling B.H.kim C.-H.kim D.Y.kim S.-H.kim Y.k.kim Y.kim T.D.kimmel k.kinoshita C.kleinwort B.knysh P.kodyš T.koga I.komarov T.konno S.korpar D.kotchetkov n.kovalchuk T.M.G.kraetzschmar P.križan R.kroeger J.F.krohn P.krokovny W.kuehn T.kuhr M.kumar R.kumar k.kumara S.kurz A.kuzmin Y.-J.kwon S.Lacaprara Y.-T.Lai C.La Licata k.Lalwani L.Lanceri J.S.Lange k.Lautenbach I.-S.Le Beihang University Beijing 100191 Brookhaven national Laboratory UptonNew York 11973 Budker Institute of nuclear Physics SB RAS Novosibirsk 630090 Centro de Investigacion y de Estudios Avanzados del Instituto Politecnico nacional Mexico City 07360 Faculty of Mathematics and Physics Charles University12116 Prague Chiba University Chiba 263-8522 Consejo nacional de Ciencia y Tecnología Mexico City 03940 Deutsches Elektronen–Synchrotron 22607 Hamburg Duke University DurhamNorth Carolina 27708 Earthquake Research Institute University of TokyoTokyo 113-0032 Forschungszentrum Jülich 52425 Jülich Department of Physics Fu Jen Catholic UniversityTaipei 24205 key Laboratory of nuclear Physics and Ion-beam Application(MOE)and Institute of Modern Physics Fudan UniversityShanghai 200443 II.Physikalisches Institut Georg-August-Universität Göttingen37073 Göttingen Gifu University Gifu 501-1193 The Graduate University for Advanced Studies(SOkEnDAI) Hayama 240-0193 Gyeongsang national University Jinju 52828 Department of Physics and Institute of natural Sciences Hanyang UniversitySeoul 04763 High Energy Accelerator Research Organization(kEk) Tsukuba 305-0801 J-PARC Branch KEK Theory CenterHigh Energy Accelerator Research Organization(KEK)Tsukuba 305-0801 Indian Institute of Science Education and Research Mohali SAS Nagar140306 Indian Institute of Technology Bhubaneswar Satya Nagar 751007 Indian Institute of Technology Hyderabad Telangana 502285 Indian Institute of Technology Madras Chennai 600036 Indiana University BloomingtonIndiana 47408 Institute for High Energy Physics Protvino 142281 Institute of High Energy Physics Vienna 1050 Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049 Institute of Particle Physics(Canada) VictoriaBritish Columbia V8W 2Y2 Institute of Physics Hanoi Instituto de Fisica Corpuscular Paterna 46980 InFn Laboratori nazionali di Frascati I-00044 Frascati InFn Sezione di napoli I-80126 Napoli InFn Sezione di Padova I-35131 Padova InFn Sezione di Perugia I-06123 Perugia

From April to July 2018,a data sample at the peak energy of the T(4 S) resonance was collected with the Belle Ⅱ detector at the SuperkEkB electron-positron *** is the first data sample of the Belle Ⅱ *** Bhabha and digamma events,we measure the integrated luminosity of the data sample to be(496.3±0.3±3.0) pb-1,where the first uncertainty is statistical and the second is *** work provides a basis for future luminosity measurements at Belle Ⅱ.

关键词： luminosity Bhabha digamma Belle II

Biomethanisation of Municipal Solid Waste by Anaerobic Fungi Co-culture with Methanogens： An Approach to Energy Recovery

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Journal of Environmental Science and Engineering 2010年第6期4卷 60-66页

作者： n.R. Chandra Shekar Reddy H.k. Ramaraju Quality ＆ Environment Volvo India Private Limited Bangalore 562122 Karnataka India Civil ＆ Environnemental Engineering Department Dayananda Sagar College of Engineering Kumara Swamy Layout Bangalore560078 Karnataka India

In nature, cellulose, lignocellulose and lignin are major sources of plant biomass; their recycling is indispensable for global carbon cycle. The major portion of the municipal solid waste consists of lignocellulose. The incineration of organic fraction of municipal solid waste (OFMSW) with high moisture content and low calorific value is not environmentally, techno-commercially viable option for energy recovery. Optimization of biomethanisation process is aim to maximize organic waste stabilization at short digestion period with higher energy recovery. The biomethanisation studies, demonstrate co-digestion of substrates improves CH4 yield due to nutrients balance. Fungi are low sensitive to environment, thrive in acidic environment and produces required multi-enzyme, attach to cell envelope and hydrolyze the substrate for energy recovery. Fermentation of cellulose by the monoculture results in the formation of H2, CO2, formate, acetate, lactate, succinate, and ethanol. In co-cultures with Methanobacterium, H2 and formate reduction indicates it’s utilized in CH4 production. Engineered co-culture of microorganisms is essential for the heterogeneous complex organic substrate degradation for extraction of unutilized energy fraction of biomass, as potential source of energy.

关键词：城市固体废物微生物培养能量回收厌氧真菌甲烷菌合作都市木质纤维素