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Ch.nese Ch.mical Letters 2007年第12期18卷 1431-1435页

作者： Ch.rkupally Sanjeeva reddy Adki Nagaraj Department of Ch.mistry Kakatiya UniversityWarangal 506009India

An efficient route for th. synth.sis of 5-（arylpropenylidine）-2,4,6-pyrimidinetrione 3 from an appropriate α,βunsaturated aromatic aldeh.des 1 and barbituric acid 2 under both.non-catalytic and solvent-free microwave irradiation conditions was described. In th.s way, a range of biologically important compounds 3 was obtained in good to excellent yields （86-98%） in a very sh.rt reaction time （30-80 s）.

关键词： Barbituric acid Knoevenagel condensation 5-(Arylpropenylidine)-2,4,6-pyrimidinetrione

Genetic variation for ph.tic acid content in mungbean(Vigna radiata L. Wilczek)

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Th. Crop Journal 2015年第2期3卷 157-162页

作者： Vinod Janardan Dh.le Kandali Srinivasalu reddy Nuclear Agriculture and Biotech.ology Division Bhabha Atomic Research Centre

Mungbean(Vigna radiata L. Wilczek) is a sh.rt-duration legume crop cultivated for seeds th.t are rich.in protein and carboh.drates. Mungbeans contain ph.tic acid(PA), an anti-nutritional factor th.t is th. main storage form of organic ph.sph.rus in seeds. It is a strong inh.bitor against th. absorption of nutrients including iron, zinc, calcium and magnesium in monogastric animals. Genotypes with.low ph.tic acid(lpa) in seed may sh.w increased assimilation of nutrients and be useful in breeding lpa cultivars. Th. present study was conducted to identify lpa sources, genetic variation, h.ritability, and association with.seed coat color, inorganic ph.sph.rus(IP), and seed size in 102 mungbean genotypes including released varieties, land races, mutants, and wild species grown in two seasons: summer 2011 and rabi 2012. PA and IP in dry seeds were estimated by modified colorimetric meth.d and Ch.n's modified meth.d,respectively. PA, IP, and 100-seed weigh. differed significantly in th. two seasons. PA content in102 genotypes ranged from 5.74 to 18.98 mg g-1and 5.85 to 20.02 mg g-1in summer 2011 and rabi 2012, respectively. h.gh.h.ritability was found for PA(0.87 and 0.86) and seed size(0.82 and0.83) but low h.ritability for IP(0.61 and 0.60). A negative correlation was found between PA and seed size(r =-0.183 and-0.267). Yellow and green seed coat genotypes contained significantly less PA th.n black seed coat genotypes. Cluster analysis revealed th. distinctness of wild species, land races and cultivated varieties on th. basis of PA content. Th. genotypes YBSM(6.001 mg g-1) and JL-781(6.179 mg g-1) sh.wed lowest PA. Th.se lpa sources can be used to develop h.gh.yielding mungbean cultivars with.low ph.tic acid.

关键词： Mungbean Ph.tic acid Inorganic ph.sph.rus Cluster analysis

Model Predictive Control of Resonant Systems Using Kautz Model

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International Journal of Automation and computing 2016年第5期13卷 501-515页

作者： Sh.mik Misra Rajasekh.ra reddy Prabirkumar Sah. Department of Ch.mical Engineering Indian Institute of Technology Guwahati

Th. scope of th.s paper broadly spans in two areas： system identification of resonant system and design of an efficient control sch.me suitable for resonant systems. Use of filters based on orth.gonal basis functions （OBF） h.ve been advocated for modelling of resonant process. Kautz filter h.s been identified as best suited OBF for th.s purpose. A state space based system identification tech.ique using Kautz filters, viz. Kautz model, h.s been demonstrated. Model based controllers are believed to be more efficient th.n classical controllers because explicit use of process model is essential with.th.se modelling tech.iques. Extensive literature search.concludes th.t very few reports are available wh.ch.explore use of th. model based control studies on resonant system. Two such.model based controllers are considered in th.s work, viz. model predictive controller and internal model controller. A model predictive control algorith. h.s been developed using th. Kautz model. Th. efficacy of th. model and th. controller h.s been verified by two case studies, viz. linear second order underdamped process and a mildly nonlinear magnetic ball suspension system. Comparative assessment of performances of th.se controllers in th.se case studies h.ve been carried out.

关键词： Model predictive control resonant systems Kautz model orth.normal basis function internal model control

ERCP wire systems: Th. long and th. sh.rt of it

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World Journal of Gastroenterology 2009年第1期15卷 55-60页

作者： Sh.lpa Ch.ndrupatla reddy Peter V Draganov Department of Medicine University of Florida College of MedicineJacksonville Florida 32610 United States Department of Gastroenterology Hepatology and Nutrition University of Florida1600 SW Archer Rd Room HD 602 PO Box 100214 Gainesville Florida 32610 United States

Guidewires are routinely used at th. time of endoscopic retrograde ch.langiopancreatograph. (ERCP) to gain and maintain access to th. desired duct and aid in th. advancement of various devices. Limitations of th. traditional long-wire systems h.ve led to th. introduction of th.ee proprietary sh.rt-wire systems. Th.se systems differ in many respects but sh.re two main principles: Th.y lock a sh.rter wire in position to allow advancement or removal of various devices with.ut displacement of th. wire and th.y all allow for ph.sician control of th. wire. In th.s compreh.nsive review, we describe th. key features of th. th.ee currently available sh.rt-wire systems: RX, Fusion and V systems. We also focus on th. potential benef its and drawbacks th.t accompany th. sh.rt-wire concept as a wh.le and each.specif ic system in particular. Alth.ugh.th. available data are limited, it appears th.t th. use of th. sh.rt-wire systems lead to reduced procedure, fluoroscopy and device exch.nge times, decreased sedation requirements, improved wire stability and increased endoscopist control of th. wire. Furth.rmore, th. ph.sician-controlled wire-guided cannulation h.s th. potential to decrease ampullary trauma and th. rate of post-ERCP pancreatitis. Th. sh.rt guidewire systems appear to be an improvement over th. traditional long-wire systems but furth.r studies directly comparing th. two approach.s are needed.

关键词： Endoscopic retrograde ch.langiopancreatograph. Guidewires V-system RX system Fusion system

Major geologic events of th. Cauvery Basin,India and th.ir correlation with.global signaturese——A review

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Journal of Palaeogeograph. 2017年第1期6卷 69-83页

作者： R.Nagendra A.Nallapa reddy Department of Geology Anna UniversityChennai600025India

Th. present review is aimed at correlating major geologic events of th. Cauvery Basin with.analogous global episodes. Th. Cauvery Basin came into existence due to Gondwana break up during Late Jurassic-Early Cretaceous by taph.ogenic rift process. Th. first marine transgression close to Aptian/Albian boundary at th. western margin of th. basin terminates th. syn-rift tectonic ph.se, wh.ch.is also precise in adjoining Krish.a-Godavari （KG） Basin. Two regional tectonic episodes are well documented in th. basin wh.ch.h.ve global significance viz. （1） A major basinal uplift during late Turonian caused by Marion h.t mantle plume resulted in widespread subaqueous volcanism in th. south.rn part of th. Cauvery Basin. Th.s uplift also ted to relative sea level （RSL） fall of about 100 m in Cauvery and KG Basins and an unconformity of a magnitude of 2.3 Ma. Th. RSL fatt closely correlates with.global sea level faU. Th.s volcanic episode also resulted in Madagascar detach.ent from India. （2） Th. reunion h.t mantle plume th.t ted to Deccan volcanism in central India resulted in E-SE tilt of th. Cauvery Basin during upper Maastrich.ian （CFI-CF3 zones）. Th.s tilt caused a sea level fall of about 80 m and lateral with.rawal of sea by about 50 km developing a major erosional unconformity ranging in magnitude of -1.8-30 My. Th. magnitude of RSL correlates wetl with.global sea level fall. Th.s sea level fall caused widespread development of canyon features in th. Cauvery Basin resulting in differential subaqueous erosion. Th. globally significant ocean anoxic events viz. OAE-Ib, OAE-1d, OAE-2 and OAE-3 are fairly discernible in th. Cauvery Basin. Th. new isotopic palaeotemperature data suggests th.t south.rn India and Madagascar were located apparently in middle latitudes with.n th. tropical-subtropical climatic zone during Atbian and early Maastrich.ian. Th. magnitude of h.atus across K-Pg boundary varying from 0 to 30 Ma is estimated based on ptanktic foraminifera for subsurface sec

关键词： Cauvery Basin Correlation Geologic events Global episodes

Solvent-free aerobic oxidation of eth.lbenzene over supported Ni catalysts using molecular oxygen at atmosph.ric pressure

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Journal of Natural Gas Ch.mistry 2008年第3期17卷 293-297页

作者： G.Raju P.Sh.va reddy J.Ash.k B.Mah.pal reddy A.Venugopal Catalysis & Ph.sical Ch.mistry Division Indian Institute of Chemical Technology

We investigated th. aerobic oxidation of eth.lbenzene in th. absence of solvent or any additive carried out over Ni on different types of supports namely SiO2, h.droxyapatite, SBA-15, and USY Zeolites. Th. oxidation of eth.lbenzene activities was measured in a round bottom flask immersed in oil bath.at known reaction temperature. Th. ph.sicoch.mical ch.racteristics of th. catalysts were examined by BET surface area, XRD, FT-IR and th. oxidation activities were correlated with.th. acidities of th. catalysts obtained by TPD of Nh.. It was observed th.t both.h.droxyapatite and USY （13% Na2O） supported Ni catalysts displayed h.gh.r eth.lbenzene conversion and 80% selectivity towards acetoph.none.

关键词： nickel SBA-15 zeolites h.droxyapatite eth.lbenzene oxidation TPD of Nh.

Improvising th. Self-h.aling Capabilities of Concrete Using Different Pozzolanic Materials and Crystalline Admixtures

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Journal of Wuh.n University of Tech.ology(Materials Science) 2022年第3期37卷 429-439页

作者： A Ravith.ja T Ch.ndra Sekh.ra reddy C Sash.dh.r SVR Engineering College AyyalurNandyalKurnoolAndhra PradeshIndia Civil Engineering G Pulla Reddy Engineering CollegeKurnoolAPIndia Jawah.rlal Neh.u Tech.ological University AnantapurIndia

To analyse th. self-h.aling capacities in terms of mech.nical performance of th. pozzolanic materials,such.as,fly ash.metakaolin and silica fume and crystalline ***-cracked concrete cubes with.about 0.05 mm width.were exposed to four different environmental conditions at different exposure times in order to determine th. effect of temperature and water availability on th. self-h.aling *** th. exposure,th. control and tested concrete cubes were evaluated for regained strength.void reduction,corrosion inh.bition,damp proofing,relative impermeability and *** samples with.SF10CA h.ve better cementitious filling and low percentage of voids and water absorption.

关键词： crystalline admixtures pozzolanic materials self-h.aling

NLDA non-linear regression model for preserving data privacy in wireless sensor networks

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Digital Communications and Networks 2020年第1期6卷 101-107页

作者： A.L.Sreenivasulu P.Ch.nna reddy Dept.of CSE JNTU AnantapurAndhra PradeshIndia

Recently,th. application of Wireless Sensor Networks(WSNs)h.s been increasing *** requires privacy preserving data aggregation protocols to secure th. data from *** privacy of th. sensor data is a ch.llenging *** paper presents a non-linear regression-based data aggregation protocol for preserving privacy of th. sensor *** proposed protocol uses non-linear regression functions to represent th. sensor data collected from th. sensor *** of sending th. complete data to th. cluster h.ad,th. sensor nodes only send th. coefficients of th. non-linear *** will reduce th. communication overh.ad of th. *** data aggregation is performed on th. masked coefficients and th. sink node is able to retrieve th. approximated results over th. aggregated *** analysis of experiment results sh.ws th.t th. proposed protocol is able to minimize communication overh.ad,enh.nce data aggregation accuracy,and preserve data privacy.

关键词： Sensor nodes Data accuracy Wireless sensor networks Data aggregation Privacy preserving

A Fast and h.gh.y Efficient Protocol for Reductive Amination of Aromatic Aldeh.des Using NaBh. and Isoxazole Amines in an Ionic Liquid Medium

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Ch.nese Journal of Ch.mistry 2011年第4期29卷 769-772页

作者： Eligeti, Rajanarendar Atth.nuri, Siva Rami reddy Samala, Raju Sh.ik, Firoz Pash. Govardh.n reddy Department of Ch.mistry Kakatiya University Warangal 506009 Andhra Pradesh India

Reductive amination of aromatic aldeh.des using NaBh. and isoxazole amines is carried out in a Bronsted acidic ionic liquid 1 -meth.limidazolium tetrafluoroborate [（h.Im）BF4]. Th. ionic liquid plays dual roles of solvent as well as catalyst for th. efficixcellent yields with.ut any undesired side product formation. Th. newly synth.sized compoundsent transformation of aromatic aldeh.des to h.terocyclic substituted amines in e （3, 6 and 7） were ch.racterized by IR, 1h.NMR and mass spectral tech.iques.

关键词： ionic liquid green ch.mistry reductive amination 1-meth.limidazolium tetrafluoroborate isoxazole amine

CFD modeling of pressure drop and drag coefficient in fixed beds:Wall effects

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Particuology 2010年第1期8卷 37-43页

作者： Rupesh.K.reddy Jyesh.h.raj B.Josh. Department of Ch.mical Engineering Institute of Chemical TechnologyMatungaMumabiIndia

Simulations of fixed beds h.ving column to particle diameter ratio （D/dp） of 3, 5 and 10 were performed in th. creeping, transition and turbulent flow regimes, wh.re Reynolds number （dpVLρL/μL） was varied from 0.1 to 10,000. Th. deviations from Ergun＇s equation due to th. wall effects, wh.ch.are important in D/dp 〈 15 beds were well explained by th. CFD simulations. Th.s, an increase in th. pressure drop was observed due to th. wall friction in th. creeping flow, wh.reas, in turbulent regime a decrease in th. pressure drop was observed due to th. ch.nneling near th. wall. It was observed th.t, with.an increase in th. D/dp ratio, th. effect of wall on drag coefficient decreases and drag coefficient nearly approach.s to Ergun＇s equation. Th. predicted drag coefficient values were in agreement with.th. experimental results reported in th. literature, in creeping flow regime, wh.reas in turbulent flow th. difference was with.n 10-15%.

关键词： Computational fluid dynamics Fixed bed Wall effects Pressure drop Drag coefficient