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Expedited extraction of xylan from corncob by power ultrasound

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International Journal of Agricultural and Biological Engineering 2009年第4期2卷 76-83页

作者： Wade Yang vishnu K.Ajapur Kathiravan Krishnamurthy Hao Feng Ruijin Yang Taha M.Rababah Department of Food Science and Human Nutrition University of FloridaGainesvilleFL 32611USA Department of Food and Animal Sciences Alabama A&M UniversityNormalAL 35762USA Illinois Institute of Technology Summit-ArgoIL 60501USA Department of Food Science and Human Nutrition University of Illinois at Urbana-ChampaignUrbanaIL 61801USA School of Food Science and Technology Southern Yangtze UniversityWuxi 214036China Department of Food Science and Human Nutrition Jordan University of Science and TechnologyIrbid22110Jordan

Some lignocellulosic biomass like corncob contains a large amount of xylan,a valuable material for applications in food,chemical and pharmaceutical *** extraction of xylan is a time consuming process,requiring 12 to 24 hours to *** this study,the efficacy of power ultrasound for reducing the extraction time and increasing the xylan yield was *** acoustic energy densities(0.18 W/mL and 0.45 W/mL)of the power ultrasound were applied to corncob for 10,20,30,and 60 *** treated samples were steamed at 110,118 and 121℃for 30 *** 0.45 W/mL acoustic energy density and 121℃steaming temperature,ultrasonic treatment was able to extract 39%of xylan in 43 *** contrast,the conventional treatment was able to extract only 34%of xylan in 24 *** ultrasound assisted extraction reduced the processing time by 97%in addition to yield increase by 14.7%.Power ultrasound can be a potential technology for enhanced xylan extraction from corncob to result in significant processing time savings.

关键词： Power ultrasound sonication lignocellulusic biomass xylan extraction corncob steaming

High-performance carbon fiber/gold/copper composite wires for lightweight electrical cables

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Journal of Materials Science & Technology 2020年第7期42卷 46-53页

作者： Thang Q.Tran Jeremy Kong Yoong Lee Amutha Chinnappan Nguyen Huu Loc Long T.Tran Dongxiao Ji W.A.D.M.Jayathilaka vishnu Vijay Kumar Seeram Ramakrishna Department of Mechanical Engineering National University of Singapore9 Engineering Drive 1EA-07-05Singapore 117575Singapore Faculty of Mechanical Engineering Ho Chi Minh City University of TechnologyVNUHCM268 Ly Thuong KietDistrict 10Ho Chi Minh City 740400Viet Nam

In this study,we synthesized high-performance Carbon Fiber/Gold/Copper(CF/Au/Cu)composite wires by using a 2-step deposition method via sputtering and *** Au was sputtered on PANbased CFs as a pre-treatment,the wettability and surface reactivity of the CFs were improved,resulting in a homogeneous deposition of Cu on their *** different Cu electrodeposition time,the resulting CF/Au/Cu composite wires could possess a high strength of up to 3.27 GPa(~10 times stronger than copper wires)while their electrical conductivity could be as high as 4.4×10^5 S/cm(~75%of that for copper).More importantly,since the composite wires were lightweight(up to 70%lower than Cu mass density),they are a promising candidate to substitute conventional heavy metal wires in the future electrical applications.

关键词： Carbon fiber Copper composite wires Strength Electrical properties

A Universal Object Oriented Expert System Frame Work for Fault Diagnosis

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International Journal of Intelligence Science 2012年第3期2卷 63-70页

作者： Dattatraya vishnu Kodavade Shaila Dinakar Apte Computer Science & Engineering D. K. T. E. Society’s Textile & Engineering Institute Ichalkaranji INDIA Electronics Engineering Department of Electronics Engineering Rajarshi Shahu College of Engineering Pune INDIA

The paper presents a universal fault diagnostic expert system frame work. The frame work is characterized by two basic features. The first includes a fault diagnostic strategy which utilizes the fault classification and checks knowledge about unit under test. The degree of accuracy to which faults are located is improved by using fault classification knowledge. The second characteristic is object oriented inference mechanism using message passing. Object orientation in inference mechanism improved inference efficiency. The developed framework demonstrates its effectiveness and superiority compared to earlier approaches using case studies.

关键词： Knowledge Inference Object Microcontroller Heuristics Inheritance

Native and transplant kidney histopathological manifestations in association with COVID-19 infection: A systematic review

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World Journal of Transplantation 2021年第11期11卷 480-502页

作者： vishnu Jeyalan Joshua Storrar Henry H L Wu Arvind Ponnusamy Smeeta Sinha Philip A Kalra Rajkumar Chinnadurai Department of Renal Medicine Royal Preston HospitalPreston PR29HTUnited Kingdom Department of Renal Medicine Salford Care OrganisationNorthern Care Alliance NHS Foundation TrustSalford M68HDUnited Kingdom Faculty of Biology Medicine and HealthUniversity of ManchesterManchester M139PLUnited Kingdom

BACKGROUND Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)can result in clinically significant multi-system disease including involvement in the *** underlying histopathological processes were unknown at the start of the *** case reports and series have been published describing the underlying renal histopathology from kidney biopsies,we have started to gain an insight into the renal manifestations of this novel *** To provide an overview of the current literature on the renal histopathological features and mechanistic insights described in association with coronavirus disease 2019(COVID-19)*** A systematic review was performed by conducting a literature search in the following websites-‘PubMed’,‘Web of Science’,‘Embase’and‘Medline-ProQuest’with the following search terms-“COVID-19 AND kidney biopsy”,“COVID-19 AND renal biopsy”,“SARS-CoV-2 AND kidney biopsy”and“SARS-CoV-2 AND renal biopsy”.We have included published data up until February 15,2021,which includes kidney biopsies(native,transplant and postmortem)from patients with *** on clinical presentation,histopathological features,management and outcome was extracted from the reported *** The total number of biopsies reported on here is 288,of which 189 are postmortem,84 native and 15 *** results are varied and show underlying pathologies ranging from collapsing glomerulopathy and acute tubular injury(ATI)to anti-nuclear cytoplasmic antibody associated vasculitis and pigment *** was variation in the specific treatment used for the various renal conditions,which included steroids,hydroxychloroquine,eculizumab,convalescent plasma,rituximab,anakinra,cyclophosphamide and renal replacement therapy,amongst *** pathological process which occurs in the kidney following COVID-19 infection and leads to the described biopsy findings has been hypothesized in some conditions but not others(for example,sepsis related hypoperf

关键词： COVID-19 Histopathology Kidney biopsy Transplant SARS-CoV-2

MHD flow of Boungiorno model nanofluid over a vertical plate with internal heat generation/absorption

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Propulsion and Power Research 2016年第3期5卷 211-222页

作者： B.Ganga S.Mohamed Yusuff Ansari N.vishnu Ganesh A.K.Abdul Hakeem Department of Mathematics Providence College for WomenCoonoor 643104India Department of Mathematics Jamal Mohamed CollegeTrichy 620020India Department of Mathematics Sri Ramakrishna Mission Vidyalaya College of Arts&ScienceCoimbatore 641020India

A mathematical analysis has been carried out to investigate the effect of internal heat generation/absorption on steady two-dimensional radiative magnetohydrodynamics(MHD)boundary-layer flow of a viscous,incompressible nanofluid over a vertical plate.A system of governing nonlinear PDEs is converted into a set of nonlinear ODEs by suitable similarity transformations and then solved analytically using HAM and numerically by the fourth order Runge–Kutta integration scheme with shooting *** effects of different controlling parameters on the dimensionless velocity,temperature and nanoparticle volume fraction profiles are discussed *** reduced Nusslet number and the local Sherwood number are *** is found that the nanosolid volume fraction profile decreases in the presence of heat generation and increases in the case of heat absorption and a reverse trend is observed in velocity *** excellent agreement is observed between present analytical and numerical ***,comparisons have been made with bench mark solutions for a special case and obtained a very good agreement.

关键词： Heat generation/absorption Homotopy analysis method Magnetohydrodynamics(MHD) Nanofluid Vertical plate

An Existence Theorem of Solutions for the System of Generalized Vector Quasi-Variational-Like Inequalities

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American Journal of Operations Research 2013年第3期3卷 329-336页

作者： Shamshad Husain Sanjeev Gupta vishnu Narayan Mishra Department of Applied Mathematics & Humanities Sardar Vallabhbhai National Institute of Technology Surat India Department of Applied Mathematics Faculty of Engineering & Technology Aligarh Muslim University Aligarh India

In this paper, we introduce and study the system of generalized vector quasi-variational-like inequalities in Hausdorff topological vector spaces, which include the system of vector quasi-variational-like inequalities, the system of vector variational-like inequalities, the system of vector quasi-variational inequalities, and several other systems as special cases. Moreover, a number of C-diagonal quasiconvexity properties are proposed for set-valued maps, which are natural generalizations of the g-diagonal quasiconvexity for real functions. Together with an application of continuous selection and fixed-point theorems, these conditions enable us to prove unified existence results of solutions for the system of generalized vector quasi-variational-like inequalities. The results of this paper can be seen as extensions and generalizations of several known results in the literature.

关键词： The System of Generalized Vector Quasi-Variational-Like Inequalities Fixed Point Theorem Open Lower Section Upper Semicontinuous C-Diagonal Quasiconvexity

Study on the Status of Metabolic Syndrome Components and Dyslipidemia among Initially Diagnosed Breast Cancer Patients and Breast Cancer Patients Pre and Post Chemotherapy

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Study on the Status of Metabolic Syndrome Components and Dys...

作者： vishnu Prasad Adhikari 重庆医科大学

学位级别：硕士

BACKGROUND AND PURPOSE The prevalence of risk factors contributing to metabolic syndrome（Met S）is increasing,and numerous components of Met S are associated with increased primary breast cancer（BC）***,less is known about the relationship of metabolic syndrome to BC *** this paper,we will study the status of blood lipid among breast cancer patients and normal cohorts and also the breast cancer patients before and after undergoing *** the incidence of metabolic syndrome and its components among normal populace and breast cancer group were comparatively *** *** clinical data of 1054 cases of initially diagnosed breast cancer patients and 2484 cases of normal women（as controls）with the reports of their blood lipid levels were collected from the Electronic Medical Records in the Breast Cancer Center of Chongqing and Medical Examination Center of the First Affiliated Hospital of Chongqing Medical University,from July 2015 to October *** data were comparatively analysed and stratified according to their *** the status of lipidemia among 446 breast cancer patients were comparatively analyzed before and after undergoing *** obtained age,sex,pathological diagnosis,menstrual status,and the status of various lipid components in those subejects from our medical record *** clinical data of 605 initially diagnosed breast cancer patients and 3212 general population with the reports of their metabolic components were collected for comparitive analysis from Chongqing Breast Cancer Center of Chongqing and Medical Centre of the First Affiliated Hospital of Chongqing Medical *** this study we calculated the stauts of BMI and metabolic components and stratified them according to their age between breast cancer group and normal population *** the end,the metabolic components were also stratified according to the number of components present in those *** *** total incidence of dyslipidemi

关键词：乳腺癌化疗前后代谢综合征血脂异常胆固醇血症甘油三酯血症

Green synthesis of titanium dioxide nanoparticles using Psidium guajava extract and its antibacterial and antioxidant properties

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Asian Pacific Journal of Tropical Medicine 2014年第12期7卷 968-976页

作者： Thirunavukkarasu Santhoshkumar Abdul Abdul Rahuman Chidambaram Jayaseelan Govindasamy Rajakumar Sampath Marimuthu Arivarasan vishnu Kirthi Kanayairam Velayutham John Thomas Jayachandran Venkatesan Se-Kwon Kim Unit of Nanotechnology and Bioactive Natural Products Post Graduate and Research Department of ZoologyC.Abdul Hakeem CollegeMelvisharam-632509Vellore DistrictTamil NaduIndia Centre for Nanobiotechnology VIT UniversityVellore 632014.Tamil NaduIndia Department of Chemistry Pukyong National UniversityBusan-608737Republic of Korea

Objective:To determine the efficacies of antibacterial and antioxidant activities of aqueous leaf extract of Psidium guajava mediated biosynthesis of titanium dioxide nanoparticles(TiO_2,NPs).Methods:Synthesized TiO_2 NPs were tested by disc diffusion method against against human pathogenic *** total antioxidant activity and phenolic content(Folin—Ciocalteau method) of synthesized TiO_2 NTs and aqueous plant extract were *** scavenging radicals were estimated hv DPPH *** synthesized TiO_2 NPs were characterized by XRD,*** and EDX,Results:FTIR spectra of synthesized TiO_2 NPs exhibited prominent peaks at 3410 cm^(-1)(alkynes),1 578 cm^(-1).1 451 cm^(-1)(alkanes),and 1 123 cm^(-1)(C-O absorption).The morphological characterization of synthesized TiO_2 NPs was analysed by FESEM which showed spherical shape and clusters with an average size of 32.58 *** maximum zone of inhibition was observed in the synthesized TiO_2 NPs(20 μg/mL) against Staphylococcus aureus(25 mm) and Escherichia coli(23 mm).The synthesized TiO_2 NPs showed more antibacterial activity than the standard antibiotic disk,tetracycline which drastically reduces the chances for the development of antibiotics resistance of bacterial *** plant aqueous extract and synthesized TiO_2NPs were found to possess maximum antioxidant activity when compared with ascorbic *** content of phenolic compounds(mg/g) in Leaf aqueous extract and synthesized TiO_2 NPs were found to be 85.4 and 18.3 mgTA/g,***:Green synthesized TiO_2 NPs provides a promising approach can satisfy the requirement of large-scale industrial production hearing the advantage of low—cost,eco—friendly and reproducible.

关键词： TiO2 nanoparticles Psidium guajava FTIR Electron microscopy Antibacterial activity Antioxidant activity

Novel Analytical Approach of Non Conventional Mapping Scheme with Discrete Hartley Transform in OFDM System

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American Journal of Operations Research 2014年第5期4卷 281-292页

作者： Shilpi Gupta Upena Dalal vishnu Narayan Mishra Applied Mathematics & Humanities Department Sardar Vallabhbhai National Institute of Technology Surat India L. 1627 Awadh Puri Colony Beniganj Faizabad Uttar Pradesh India Electronics Engineering Department Sardar Vallabhbhai National Institute of Technology Surat India

The system performance has been analyzed for π/4 DQPSK mapping scheme, which is differential in nature and hence adding additional advantage. Performance evaluation with random data as well as some images has been taken. Channel modeling has been performed in multipath fading environment. For elaboration of the concept mathematical modeling has been implemented using computer simulation. In this paper, an attempt is made to know the capabilities of DHT-OFDM with non conventional mapping technique π/4 DQPSK.

关键词： DHT-OFDM FFT-OFDM Rayleigh π/4 DQPSK BER