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轮胎彩色胎面胶料的磨耗行为(英文)

轮胎彩色胎面胶料的磨耗行为(英文)

Plasmid mediated antibiotic resistance of Vibrio cholerae Ol biotype E1 Tor serotype Ogawa associated with an outbreak in Kolkata,India

2004年国际橡胶会议

作者： Suprakash nayek Anil K.Bhowmick Samir K.pal Arup K. Chandra Rubber Technology Center Indian Institute of TechnologyKharagpur-721302India Rubber Technology Center Indian Institute of TechnologyKharagpur-721302India Mining Engineering Department Indian Institute of TechnologyKharagpur-721302India Apollo Tyres Limited Boroda-390006India

研究了不同法向负荷下轮胎彩色胎面胶在各种岩石路面上的磨耗。彩色胎面胶是用nR,SBR和白炭黑制作的。岩石具有不同硬度和化学成分。磨耗V随法向负荷n和摩擦功Fw增大而增大,其关系用下式表示:V=βnα和V=kFwn式中,α,β,k和n为常数,且...

研究了不同法向负荷下轮胎彩色胎面胶在各种岩石路面上的磨耗。彩色胎面胶是用nR,SBR和白炭黑制作的。岩石具有不同硬度和化学成分。磨耗V随法向负荷n和摩擦功Fw增大而增大,其关系用下式表示:V=βnα和V=kFwn式中,α,β,k和n为常数,且取决于岩石和胶料的性质。在白炭黑填充量达到一定限度（nR胶料60份,SBR胶料70份）前,磨耗速率下降,超过此限度则增大。在摩擦力和动态磨擦系数研究中也观察到类似趋势。在低法向负荷下,SBR胶料的磨耗速率比nR填充胶料低得多。磨耗率随法向负荷增大而增大。在相同试验条件下,SBR胶料的温升低于nR填充胶料,而且在一定时间范围内,温升随时间延长而增高。在硬岩石上温升较大,填充胶料的温升也较大。所有试验结果都借助动态摩擦系数、摩擦功以及磨耗引起的结构变化来解释,在同等条件下,SBR胶料的动态摩擦系数低于nR胶料,动态摩擦系数随温度升高而减小。特定橡胶胶料的动态摩擦系数取决于岩石的性质。在较低法向力下的磨耗过程中,nR填充胶料的质量增大,这可能是机械化学反应造成的。但是,SBR胶料的质量增大低于nR胶料。nR胶料的动态摩擦系数受到在胶料表面形成的焦油状油层的影响。nR胶料的碎渣是油状和结构化的,而SBR胶料的碎渣是粒状的。与nR胶料相比,SBR填充胶料磨耗表面具有比较突出的棱脊。

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Asian Pacific Journal of Tropical Medicine 2010年第8期3卷 637-641页

作者： Shyamapada Mandal Manisha DebMandal nishith Kumar pal Department of Microbiology Bacteriology and Serology UnitCalcutta School of Tropical MedicineC.R.AvenueKolkata-700 073India Department of Physiology and Biophysics KPC Medical College and Hospital1F Raja S C Mallick RoadJadavpurKolkata-700 032India

Objective:To determine the antibiotic resistance of Vibrio choleras(***) O1 biotype El Tor serotype Ogawa isolates involved in an outbreak of watery diarrhea in Kolkata,and to explore the role of plasmid in mediating antibiotic ***:Antibiotic susceptibility and minimum inhibitory concentration(MIC) values of antibiotics for the isolated *** 01 Ogawa(n=12) were determined by disk diffusion and agar dilution methods,respectively,using ampicillin(Am),chloramphenicol(C),trimethoprim(Tm),tetracycline(T).erythromycine(Er), nalidixic acid(nx).ciprofloxacin(Cp),amikacin(Ak) and cefotaxime(Cf).Plasmid curing of multidrug resistant(MDR) *** 01 Ogawa strains was done following ethidium bromide *** electrophoresis,the plasmid DnAs,extracted from the isolated MDR V. cholerae O1 Ogawa strains and their cured derivatives,were visualized and documented in ’gel doc’ ***:The outbreak causing *** O1 Ogawa isolates were MDR as determined by disk diffusion susceptibility test,and MIC *** isolates showed three different drug resistance patterns:AmTmTErnx(for 6 isolates).TmTErCp(for 5 isolates), and AmTninx(for one isolate),and showed uniform sensitivity to C,Ak and *** loss of plasmids with the concomitant loss of resistance to Am,Tm,T and Er of the isolates occurred following ethidium bromide ***:The current findings suggest that the V. cholerae O1 Ogawa associated with the cholera outbreak were MDR,and resistance to Am,Tm,T and Er among the isolates were plasmid mediated.

关键词： Cholera Outbreak V.cholerae O1 Ogawa Zone diameter of inhibition Minimum inhibitory concentration Multidrug resistant R-plasmid

Anti-bacterial Properties of Transition Metal Complexes of Copper Metal Ion:A Mini Review

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Journal of Metallic Material Research 2022年第2期5卷 27-38页

作者： Abhay nanda Srivastva nisha Saxena netra pal Singh Jayant Kumar Department of Chemistry Nitishwar MahavidyalayaB.R.A.Bihar UniversityMuzarrafpur842002India University Department of Chemistry B.R.A.Bihar UniversityMuzaffarpur842001India Department of Chemistry M.R.M.CollegeL.N.Mithila UniversityDarbhanga846004India Department of Chemistry D.D.U.Gorakhpur UniversityGorakhpur273009India Graduate Student Department of ZoologyNitishwar MahavidyalayaB.R.A.Bihar UniversityMuzarrafpur842002India

Bacterial infections are a major cause for impulsive deaths in human *** infections of the respiratory,gastrointestinal and central nervous system account for the majority of cases of sudden *** available drugs are getting ineffective by each passing day as the mutation is very fast in these pathogenic microbes resulting in drug *** growing resistance of bacteria necessitates the development of new and effective compounds of desired characteristics that could bar the rapid development of bacterial cell inside of the host *** with cellular resistance for clinical antibiotics,co-bacterial infections during microbial attacks(***,fungus,protozoans etc.)also demand for some novel antibacterial drugs having high efficacy and minimal side effects on human *** antibiotics should also be compatible with remedies ongoing for core microbial ***,in demand of search for effective antibacterial moieties,the scope of transition metal complexes as drug gives a good signal against the pathogenic bacteria by inhibiting their *** action of metal complexes on bacterial cell may be due to impremiablity,enzymatic interruptions,ribosomal interactions,disturbance in the path of protein synthesis,denaturing of genetic materials *** the *** in complexes may interrupt the lipophilisity through the bacterial cell *** of metal ions in organic moieties behaving as ligand delocalizeπ-electrons upon the entire chelate ring and this chelation results in overlapping of ligand orbital and partial sharing of(+)ve charge of metal ion with donor *** structural modifications in metal and organic lone pair donor species are the supposed reasons for their enhanced antimicrobial activities against pathogenic *** present review focuses on the impact of recently synthesized,well characterized mono and binuclear transition metal complexes of Cu ions that have the potential to be the drug of th

关键词： Ligands Coordination compounds Antimicrobial activity Drug resistance

Alteration in Biochemical Response in Sesamum indicum upon Different Plant-Pathogen Interactions

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Journal of Agricultural Science and Technology(B) 2011年第1期1卷 68-75页

作者： A. Sharma S, Sharma n. Joshi P. Sharma Department of Bioscience ＆ Biotechnology Banasthali University Banasthali 304022 India

Sesamum, an important oil yielding crop suffers a huge loss in its yield due to attack of large number of fungal pathogens. In semi-arid regions Sesamum is mainly affected by two major plant-pathogenic fungus viz. Macrophomina phaseolina and Fusarium oxysporum. The aim of the study was to analyze the metabolic alterations in Sesamum after infection with both pathogens. This accomplished by individually by （the word estimating is not quantitative） the levels of total phenolic compounds and the activities of phenylalanine ammonia lyase （pal） of one week old plants. The pal showed high activity in infected plants, revealing the active phase in the synthesis of secondary metabolites in the Sesamum plant after infection. As a consequence, in infected plants the contents of polyphenols along with salicylic acid （SA） considerably exceeded when compared to control plants. This in vivo study of M. phaseolina and F. oxysporum infection reveals the differences of resistance levels in sesame against these two pathogens. These results provide important information regarding the plant-pathogen interactions and also forfor Sesamum improvement programs seeking the adaptation to diverse range of fungal attack along with adverse environmental factors.

关键词： Fusarium oxysporum Macrophomina phaseolina phenylalanine ammonia lyase polyphenols salicylic acid Seasamum

Surgical management and outcomes of severe gastrointestinal injuries due to corrosive ingestion

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World Journal of Gastrointestinal Surgery 2012年第5期4卷 121-125页

作者： Amit Javed Sujoy pal Elan Kumaran Krishnan Peush Sahni Tushar Kanti Chattopadhyay Department of Gastrointestinal Surgery and Liver Transplantation All India Institute of Medical Sciences

AIM:To report our experience in the surgical management of severe injuries of the gastrointestinal tract due to corrosive ***:A retrospective review of patients who underwent emergency surgery for severe gastrointestinal injuries following corrosive ingestion between 1983 and 2010 was carried *** was extracted from a prospectively maintained esophageal disease *** corrosive injuries were defined as full thickness necrosis with perforation of the esophagus or the stomach(with or without involvement of the adjacent viscera) with resultant mediastinitis or ***:Between 1983 and 2010,209 patients with corrosive injury of the esophagus were *** these,13(6.2%) patients underwent emergency surgery for severe corrosive *** median age of the patients was 22 years and the median interval between ingestion of the corrosive substance and surgery was 24 *** surgical procedures done included esophagogastrectomy alone(n = 6),esophagogastrectomy withduodenectomy(n = 4),esophagogastrectomy with pancreaticoduodenectomy(n = 1),esophagogastrectomy with splenectomy(n = 1) and distal gastrectomy with duodenectomy(n = 1).Two patients died in the postoperative period and one after discharge awaiting the second *** factors significantly predictive of mortality following such an injury included renal failure at the time of initial presentation,presence of metabolic acidosis,delay of more than 24 h between corrosive ingestion and surgery,and corrosive induced adjacent organ injury(pancreatic)(P nd 0.015 respectively).Ten patients underwent subsequent surgery for restoration of the alimentary tract continuity with a colonic pull-up(n = 8) and gastrojejunostomy(n = 1).In one patient,the attempted colon pull-up failed due to extensive scarring of the *** median follow up(following restoration of continuity of the gastrointestinal tract) was 36.5 *** patient developed dysphagia due to a strictur

关键词： Caustics Esophagus Esophageal stenosis Dysphagia

A Proposed Geoheritage Inventory System: Case Study of Isalo national Park, Madagascar

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Journal of Geoscience and Environment Protection 2016年第5期4卷 163-172页

作者： Hasina n. Randrianaly Andrea Di Cencio Aroniaina Rajaonarivo Tsilavo Raharimahefa Département de paléontologie et d’Anthropologie Biologique Faculté des Sciences Université d’Antananarivo Antananarivo Madagascar Geology & paleontology Technical Studio San Casciano Val di Pesa (FI) Italy Isalo national Parks Ihorombe Madagascar Deparment of Geology University of Regina Regina Canada

Geological heritage inventory procedures and templates have been principally emerged from European countries. Each of these countries has developed its proper method of inventory based on its natural heritage, recognized on local and/or regional scales. natural sites were mainly identified and characterized in a particular geological context, which is usually very unique, valuable and impressive;resulting in the protection of the sites. Madagascar is known internationally as a beautifully landscaped island, but the impressive sites were not cataloged. We carried out a series of field inventory of potential geological sites within the Isalo national Park in southern Madagascar. We invented several inventory sheets in order to record the most detailed information about the sites identified within the park. This is to aid in organizing the park and to establish a sustainable base for the creation of a geopark, and also they help us to build a database for geosites and their classifications. This article suggests a prototype model for inventorying intangible geosites, paleosites and geomorphosites. Our inventory sheets help to identify and to promote geological importance of any sites, not only for academia but also for other sectors such as tourism and conservation.

关键词： Inventory Sheets Geoheritage Geosites paleosites Geomorphosites Park national Isalo Park Madagascar

TERTIARY BLOCK ROTATIOnS AnD PYRRHOTITE/ MAGnETITE GEOTHERMOMETRY In THE TETHYAn HIMALAYA(SHIAR KHOLA,CEnTRAL n.pal)

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地学前缘 2000年第S1期7卷 58-59页

作者： E.Schill\+1,E.Appel\+1,P.Gautam\+2[WT5,5”BX](1.Institut für Geologie und pal ontologie,Universitet Tübingen,Sigwartstrasse 10,72076 Tübingen, Germany 2.Central Department of Geology,Tribhuvan University,Kirtipur,Kathmandu,n.pal)

In Mesozoic carbonates of the Tethyan Himalayas two characteristic remanent magnetisations(ChRM\-1 and ChRM\-2)were identified by their unblocking *** ChRM\-1 is carried by pyrrhotite(unblocking spectra:270～340℃),acquired as a secondary thermoremanent magnetisation (TRM) during exhumation and *** ChRM\-2 is carried by magnetite (unblocking spectra:430～580℃).A primary origin is indicated by calcite twin geothermometry and remanences consistent with the expected *** an E—W profile of 10km length the ratio of remanence intensity of pyrrhotite to magnetite ( R PYR/MAG )changes systematically (from 0 38 to 1 00,Fig.1).It is known that pyrrhotite is formed in marly carbonates during low\|grade metamorphism (Rochette 1987).This occurs at the expense of *** the ratio R PYR/MAG is related to metamorphic temperatures and can be used as a geothermometer for temperatures≤300℃ in low\|grade metamorphic carbonates where other methods are *** remanence directions were used to estimate the amount of block rotation around vertical and horizontal axes(*** et al.1985,Appel et al.1991 & 1995).In the Shiar area the pyrrhotite remanence directions follow a small\|circle distribution with a best fit parallel to the n—S direction(Fig.2).

关键词： palaeomagnetism Tethyan Himalayas block rotation geoghermormetry

Six end-stage renal disease patients benefited from first non-simultaneous single center 6-way kidney exchange transplantation in India

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World Journal of nephrology 2016年第6期5卷 531-537页

作者： Vivek B Kute Himanshu V Patel Umesh T Varyani Pankaj R Shah Pranjal R Modi Veena R Shah Sayyed J Rizvi Bipin C pal Priya S Shah Pavan S Wakhare Vijay A Ghodela Saiprasad G Shinde Varsha B Trivedi Minaxi H Patel Hargovind L Trivedi Department of nephrology and Clinical Transplantation Institute of Kidney Diseases and Research Center Dr HL Trivedi Institute of Trans-plantation Sciences Department of Urology and Transplantation Dr HL Trivedi Institute of Trans-plantation Sciences Department of Anesthesia Dr HL Trivedi Institute of Transplantation Sciences Department of Pathology and laboratory medicine Dr HL Trivedi Institute of Transplantation Sciences

AIM To avoid desensitization protocols and ABO incompatible kidney transplantation(KT) due to high costs and increased risk of infections from intense *** We present institutional ethical review board- approved study of single center 6-way kidney exchange transplantation. The participants comprised ABO incompatibility(n = 1); positive cross-match and/or presence of donor specific antibody(n = 5). The average time required from registration in kidney paired donation(KPD) registry to find suitable donors was 45 d and time required to perform transplants after legal permission was 2 mo. RESULTS Graft and patient survival were 100%, and 100%, respectively. One patient had biopsy-proven acute borderline T cell rejection(Banff update 2013, type 3). Mean serum creatinine was 0.8 mg/dL at 9 mo followup. The waiting time in KPD was short as compared to deceased donor KT. COnCLUSIOn We report first non-simultaneous, single center, 6-way kidney exchange transplantation from India. Our experience will encourage other centers in India to undertake this practice.

关键词： Kidney transplantation/methods Kidney paired donation Living donors/supply and distribution Donor selection/methods

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湖北房县几种中新世哺乳动物化石

古脊椎动物与古人类 1979年第3期 189-199页

作者：阎德发中国科学院古脊椎动物与古人类研究所

本文记述了在湖北房县发现的,属晚中新世的五种哺乳动物化石,其中有一新属,两新种。柱齿犀在晚中新世就已十分特化。安琪马、利齿猪和角羊曾见于内蒙通古尔晚中新世哺乳动物群。湖北房县的哺乳动物化石地点的时代当为晚中新世。

关键词：中新世第三纪化石前臼齿原尖哺乳动物齿冠安琪马板齿犀颊齿古人类研究所前附尖齿列房县湖北