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Progress in breeding for resistance to Ug99 and other races of the stem rust fungus in CIMMYT wheat germplasm

Frontiers of Agricultural Science and Engineering 2019年第3期6卷 210-224页

作者： sridhar BHAVANI David PHODSON Julio HUERTA-ESPINO Mandeep SRANDHAWA Ravi PSINGH International Maize and Wheat Improvement Center Texcoco56237Mexico Campo Experimental Valle de México INIFAP Chapingo56230Mexico International Maize and Wheat Improvement Center ICRAF CampusNairobi00100Kenya

Races belonging to the Ug99(TTkSk) lineage of the wheat stem rust fungus, carrying complex virulence combinations, and their migration to countries in Africa,Middle East and Asia continue to pose a significant threat to global wheat *** rapid spread of additional races, e.g., TkTTF or the Digalu lineage, in several countries causing localized epidemics reminds us of the vulnerability of wheat germplasm to stem rust disease, a formidable foe referenced as early as biblical times.A global rust monitoring system reflecting increased surveillance efforts has identified 13 races within the Ug99 lineage in 13 countries and unrelated lineages are emerging, spreading and posing serious threats to wheat *** TkTTF has caused localized epidemics in Ethiopia and its variants have been recently implicated in stem rust outbreaks in *** research efforts have resulted in the identification of several new resistance genes and gene combinations for use in *** multiple adult plant resistance(APR) genes in high-yielding backgrounds and discovery of new quantitative trait loci conferring stem rust resistance has progressed in the recent years, enhancing the durability of *** gene stewardship and new generation breeding materials and cultivars that combine multiple race-specific or minor to intermediate effect APR genes,complemented by active surveillance and monitoring, have helped to limit major epidemics and increase grain yield potential in key target environments.

关键词： adult plant resistance black rust race-specific resistance Triticum aestivum

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MILLIMETER WAVE APERTURE COUPLED MICROSTRIP PATCH ANTENNA ARRAYS FED BY DIELECTRIC IMAGE LINE

MILLIMETER WAVE APERTURE COUPLED MICROSTRIP PATCH ANTENNA AR...

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1996年第四届毫米波和远红外科学与技术国际会议

作者： sridhar kanamaluru Department of Electrical Engineering Texas A＆M University College Station

＜正＞The large transmission losses in conventional microstrip feedlines that are used to feed aperture coupled microstrip patch antennas at millimeter wave frequencies can be avoided by using low loss transmission lines such as the dielectric image lines（DIL）.This paper presents the analysis of the aperture coupled microstrip patch antennas fed by dielectric image lines（ACMADIL）,design of antenna arrays of the new structure and the performance of the arrays.

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Mechanical behavior of organo-modified Indian bentonite nanoclay fiber-reinforced plastic nanocomposites

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Frontiers of Materials Science 2013年第4期7卷 396-404页

作者： N. RAGHAVENDRA H. N. NARASIMHA MURTHY M. kRISHNA k. R. VISHNU MAHESH R. sridhar S. FIRDOSH G. ANGADI S. C. SHARMA Center for Manufacturing and Research Technology Utilization R. V. College Campus Bangalore 560059 Karnataka India Department of Mechanical Engineering R. V. College of Engineering Bangalore 560059 Karnataka India Department of Chemistry ACS College of Engineering Bangalore 560074 Karnataka India Tumkur University Tumkur 572103 Karnataka India

The aim of the research was to examine the influence of organo-modified Indian bentonite （IB） nanoclay dispersed in vinyisster on the mechanical properties of nanoclaylvinylesterlglass nanocomposRes. Nanoclay was organically modified using cationic surfactant hexadecyltrimethylammonium bromide （HDTMA-Br） by cation exchange method and dispersed in vinylester using ultrasonication and twin screw extrusion. XRD of nanoclaylvinylester revealed exfoliaUon at 4 wt.% nanoclay indicating uniform dispersion in the polymer. DSC results showed improvement in glass transition temperature by 22.3% in 4 wt.% nanoclaylvinylester/glass when compared with that of vinylester/glass. Nanoclay/vinylester/glass with 4 wt,% nanoclay showed 29.23%, 23.84% and 60.87% improvement in ultimate tensile strength （UTS）, fiexural strength （FS） and interlaminar shear strength （ILSS） respectively when compared with those of vinylester! glass. The mode of tensile failure examined by SEM showed no agglomeration of nanoclay in 4 wt.% nanoclayNinylester/glass specimens.

关键词： Indian bentonite (IB) ultrasonication twin-screw extrusion mechanical property

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Cloning, Expression, and Homology Modeling of GroEL Protein from Leptospira interrogans Serovar Autumnalis Strain N2

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Genomics, Proteomics & Bioinformatics 2011年第4期9卷 151-157页

作者： kalimuthusamy Natarajaseenivasan Santhanam Shanmughapriya sridhar Velineni Sergey C. Artiushin John F. Timoney Medical Microbiology Laboratory Department of Microbiology School of Life Sciences Bharathidasan University Gluck Equine Research Center University of Kentucky

Leptospirosis is an infectious bacterial disease caused by Leptospira species. In this study, we cloned and se- quenced the gene encoding the immunodominant protein GroEL from L. interrogans serovar Autumnalis strain N2, which was isolated from the urine of a patient during an outbreak of leptospirosis in Chennai, India. This groEL gene encodes a protein of 60 kDa with a high degree of homology （99% similarity） to those of other leptospiral serovars. Recombinant GroEL was overexpressed in Escherichia coli. lmmunoblot analysis indi- cated that the sera from confirmed leptospirosis patients showed strong reactivity with the recombinant GroEL while no reactivity was observed with the sera from seronegative control patient. In addition, the 3D structure of GroEL was constructed using chaperonin complex cpn60 from Thermus thermophilus as template and vali- dated. The results indicated a Z-score of -8.35, which is in good agreement with the expected value for a pro- tein. The superposition of the Ca traces of cpn60 structure and predicted structure of leptospiral GroEL indicates good agreement of secondary structure elements with an RMSD value of 1.5A. Further study is necessary to evaluate GroEL for serological diagnosis of leptospirosis and for its potential as a vaccine component.

关键词： GroEL expression homology modeling leptospirosis serodiagnosis

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Effect of geojute technique on density,diversity and carbon stock of plant species in landslide site of North West Himalaya

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Journal of Mountain Science 2018年第9期15卷 1961-1971页

作者： Harsh MEHTA Raj kUMAR M Ayub DAR GP JUYAL sridhar PATRA Sneha DOBHAL AC RATHORE Rajesh kAUSHAL Pk MISHRA ICAR-Indian Institute of Soil and Water Conservation 218Kaulagrh RoadDehradun-248195UttarakhandIndia ICAR-Central Soil Salinity Research Institute Karnal-132001HaryanaIndia United Nations University-Institute for Integrated Management of Material Fluxes and ofResources(UNU-FLORES) Ammonstrasse 74Dresden-01067Germany VCSG Uttarakhand University of Horticulture and Forestry College of ForestryRanichauri-249 199UttarakhandIndia

Mountainous regions of the globe experience landslides due to heavy rainfall and unplanned construction on slopes. Geojute is adopted globally as a landslide rehabilitation measure, but its impact on natural vegetation development is poorly understood. The present study was conducted to examine the impact of geojute application on vegetation restoration, ecology and carbon stock in a recently occurred landslide, during 2012. The results revealed that the geojute application improved the richness, diversity, density and basal area of plant species at the landslide site. Likewise, biomass production, carbon stock and carbon sequestration of plant species was observed significantly higher in geojute treatments compared to control(without geojute treatment). Moreover, significant improvement in soil moisture was recorded beneath the geojute treatments. Further, results showed that the geojute is highly effective in controlling soil erosion at the landslide site. The findings of this study revealed ecological and environmental benefits of geojute application in term of improvement in vegetation recovery processes, species diversity and carbon sequestration at the landslide site. The scientific outcome of this study can be helpful for planning the rehabilitation measures in landslide affected regions of the globe.

关键词：植物种类山崩地点密度存货碳西方北方

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Room-Temperature Humidity Sensing Using Graphene Oxide Thin Films

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Graphene 2016年第1期5卷 1-13页

作者： Gautam Naik.sridhar krishnaswamy Center for Quality Engineering Northwestern University Evanston USA

In this article, we report on a room-temperature humidity sensing device using graphene oxide (GO) thin films synthesized by chemical exfoliation. Changes in the device conductivity are measured for varying relative humidity in the experimental chamber. Experiments are carried out for relative humidity varying from 30% to 95%. We observe a difference in the results obtained for low relative humidity (50%), and propose a sensing mechanism to explain this difference. Although the sensor exhibits some hysteresis at high relative humidities, a method to “reset” the sensor is also proposed. The sensing device has high sensitivity and fast response time.

关键词： Graphene Thin Film Sensor Humidity Hysteresis

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裁员风起赛意传到华尔街

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商业周刊（中文版） 2022年第19期 20-21页

作者： sridhar Natarajan Hannah Levitt 王非(译) 不详

疫情过后,以高盛为首,华尔街大小投行的老板都开始裁员,并且可能减少奖金发放。摩根大通的高管曾经左右为难。2021年华尔街刮起跳槽风潮,但该行首席执行官杰米·戴蒙(Jamie Dimon)要求美国的员工定期回办公室工作。当时新冠病例仍在攀升... 详细信息

疫情过后,以高盛为首,华尔街大小投行的老板都开始裁员,并且可能减少奖金发放。摩根大通的高管曾经左右为难。2021年华尔街刮起跳槽风潮,但该行首席执行官杰米·戴蒙(Jamie Dimon)要求美国的员工定期回办公室工作。当时新冠病例仍在攀升,一些部门经理不愿强制要求员工回办公室,担心他们会辞职。很多部门已经备受员工辞职困扰,还在努力填补职位空缺。

关键词：首席执行官职位空缺投行高盛奖金发放华尔街裁员高管

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Nerve-sparing robot-assisted radical prostatectomy:Current perspectives

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Asian Journal of Urology 2021年第1期8卷 2-13页

作者： Anup kumar Vipul RPatel sridhar Panaiyadiyan kulthe Ramesh Seetharam Bhat Marcio Covas Moschovas Brusabhanu Nayak Department of Urology Robotics and Renal TransplantVardhman Mahaveer Medical College and Safdarjang HospitalNew DelhiIndia Department of Robotic Surgery AdventHealth Global Robotics InstituteCelebrationFLUSA Department of Urology All India Institute of Medical SciencesNew DelhiIndia

Robotic-assisted radical prostatectomy(RARP)is the current standard of care with long term cure in organ-confined *** introduction of nerve-sparing(NS)to standard RARP has shown positive results in terms of functional outcomes in addition to the oncological *** article reviews the current perspectives of NS-RARP in terms of applied anatomy of the prostatic fascial planes,the neurovascular bundle(NVB),various NS techniques and postoperative functional outcomes.A non-systematic review was done using PubMed,Embase and Medline databases to retrieve and analyse articles in English,with following keywords“prostate cancer”,“robotic radical prostatectomy”,“nerve-sparing”.The Delphi method was used with an expert panel of robotic surgeons in urology to analyse the potency outcomes of various published comparative and non-comparative *** literature has shown that NS-RARP involves various techniques and approaches while there is a lack of randomized studies to suggest the superiority of one over the *** such as preoperative risk assessments,baseline potency,surgical anatomy of individual patients and surgeons’expertise play a major role in the outcomes.A tailored approach for each patient is required for applying the NS approach during RARP.

关键词： Prostatectomy Robot-assisted radical prostatectomy Nerve-sparing

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Junker: An Intergenic Explorer for Bacterial Genomes

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Genomics, Proteomics & Bioinformatics 2011年第4期9卷 179-182页

作者： Jayavel sridhar Radhakrishnan Sabarinathan Shanmugam Siva Balan Ziauddin Ahamed Rafi Paramasamy Gunasekaran kanagaraj Sekar Centre of Excellence in Bioinformatics School of Biotechnology Madurai Kamaraj University UGC-Networking Resource Centre in Biological Sciences School of Biological Sciences Madurai Kamaraj University Bioinformatics Centre Indian Institute of Science

In the past few decades, scientists from all over the world have taken a keen interest in novel functional units such as small regulatory RNAs, small open reading frames, pseudogenes, transposons, integrase binding attB/attP sites, repeat elements within the bacterial intergenic regions （IGRs） and in the analysis of those ＂junk＂ regions for ge- nomic complexity. Here we have developed a web server, named Junker, to facilitate the in-depth analysis of IGRs for examining their length distribution, four-quadrant plots, GC percentage and repeat details. Upon selection of a particular bacterial genome, the physical genome map is displayed as a multiple loci with options to view any loci of interest in detail. In addition, an IGR statistics module has been created and implemented in the web server to analyze the length distribution of the IGRs and to understand the disordered grouping of IGRs across the genome by generating the four-quadrant plots. The proposed web server is freely available at the URL http：//***/junker/.

关键词： bacterial genome intergenic region web server statistics module

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Using Magnetic Nanoparticles to Eliminate Oscillations in Saccharomyces cerevisiae Fermentation Processes

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Journal of Sustainable Bioenergy Systems 2012年第3期2卷 27-32页

作者： Lakshmi N. sridhar Chemical Engineering Department University of Puerto Rico Mayaguez

This article provides computational evidence to show that functionalized magnetic nanoparticles can eliminate the wasteful oscillatory behavior in fermentation processes involving Saccharomyces cerevisiae. There has been a consi-derable amount of work demonstrating the existence of oscillations in fermentation processes. Recently Reference [1] computationally demonstrated very simple strategies to eliminate the oscillations in the fermentation process. In the case of the of the Saccharomyces cerevisiae fermentation process it was shown that the addition of a little bit of oxygen would be successful in eliminating the oscillation causing Hopf bifurcations. The work of [2,3] demonstrated that oxygen mass transfer could be enhanced by using functionalized magnetic nanoparticles. The aim of this work is to incorporate the model used by [3] regarding the enhancement of oxygen mass transfer in the cybernetic Jones kompala model [4] describing the dynamics of the Saccharomnyces cerevisiae fermentation process and demonstrate that using the functionalized magnetic nanoparticles can by altering the mass transfer coefficient actually succeed in eliminating the oscillatory behavior that plagues the Saccharomyces cerevisiae fermentation process. This occurs because the oscillation causing Hopf bifurcations are sensitive to the amount of input oxygen and increasing the oxygen mass transfer coefficient causes the disappearance of the Hopf bifurcation points.

关键词： Nanoparticles Fermentation Oscillations

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