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Significant increase in HBV, HCV, HIV and syphilis infections among blood donors in West Bengal, Eastern India 2004-2005: Exploratory screening reveals high frequency of occult HBV infection

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World Journal of Gastroenterology 2007年第27期13卷 3730-3733页

作者： Prasun bhattacharya Partha kumar Chandra Sibnarayan Datta Arup Banerjee Subhashish Chakraborty Krishnan Rajendran Subir kumar Basu sujit kumar bhattacharya Runu Chakravarty Institute of Blood Transfusion Medicine and Immunohematology Kolkata India ICMR Virus Unit Kolkata India National Institute of Cholera and Enteric Diseases Kolkata India

AIM: To evaluate the prevalence of markers of hepatitis B virus (HBV) and hepatitis C virus (HCV) and human immunodeficiency virus (HIV) among blood donors in Kolkata, Eastern India for two consecutive years and to conduct a pilot study to explore the presence of HBV DNA among hepatitis B surface antigen (HBsAg) negative but anti-HBc positive blood donors. METHODS: Seroprevalence of HBsAg, anti-HCV and anti-HIV was studied among 113 051 and 106 695 voluntary blood donors screened in 2004 and 2005, respectively. Moreover, a pilot study on 1027 HBsAg negative donors was carried out for evaluating the presence of HBV DNA by PCR on HBsAg negative/anti- HBc positive donors. RESULTS: A statistically significant increase in the prevalence of HBV (1448 vs 1768, P < 0.001), HIV (262 vs 374, P < 0.001), HCV (314 vs 372, P = 0.003) and syphilis (772 vs 853, P = 0.001) infections was noted among blood donors of Kolkata West Bengal in 2005 as compared to 2004. Moreover, the exploratory study on 1027 HBsAg negative donors revealed that 188 (18.3%)of them were anti-HBc positive out of which 21% were positive for HBV DNA. CONCLUSION: The findings of this study underscore the significantly increasing endemicity of hepatitis viruses, syphilis and HIV among the voluntary blood donors of our community. The pilot study indicates a high rate of prevalence of HBV DNA among HBsAg negative/anti-HBc positive donors and thus emphasizes the need for a more sensitive and stringent screening algorithm for blood donations.

关键词： Hepatitis B virus Human immunodeficiency virus Hepatitis C virus Blood donation Occult HBV infection

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Marine Predators Algorithm with Deep Learning-Based Leukemia Cancer Classification on Medical Images

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Computer Modeling in Engineering & Sciences 2024年第10期141卷 893-916页

作者： Sonali Das Saroja kumar Rout sujit kumar Panda Pradyumna kumar Mohapatra Abdulaziz S.Almazyad Muhammed Basheer Jasser Guojiang Xiong Ali Wagdy Mohamed Department of Computer Science&Engineering Gandhi Institute for TechnologyBPUTBhubaneswar752054India Department of Information Technology Vardhaman College of Engineering(Autonomous)Hyderabad501218TelanganaIndia Department of Electronic&Communication Engineering Vedang Institute of TechnologyBhubaneswar752010India Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityRiyadh11543Saudi Arabia Department of Computing and Information Systems School of Engineering and TechnologySunway UniversityJalan UniversitiBandar SunwaySelangor Darul Ehsan47500Malaysia Research Centre for Human-Machine Collaboration(HUMAC) School of Engineering and TechnologySunway UniversityJalan UniversitiBandar SunwaySelangor Darul Ehsan47500Malaysia Guizhou Key Laboratory of Intelligent Technology in Power System College of Electrical EngineeringGuizhou UniversityGuiyang550025China Operations Research Department Faculty of Graduate Studies for Statistical ResearchCairo UniversityGiza12613Egypt Applied Science Research Center Applied Science Private UniversityAmman11931Jordan

In blood or bone marrow,leukemia is a form of cancer.A person with leukemia has an expansion of white blood cells(WBCs).It primarily affects children and rarely affects *** depends on the type of leukemia and the extent to which cancer has established throughout the *** leukemia in the initial stage is vital to providing timely patient *** image-analysis-related approaches grant safer,quicker,and less costly solutions while ignoring the difficulties of these invasive *** can be simple to generalize Computer vision(CV)-based and image-processing techniques and eradicate human *** researchers have implemented computer-aided diagnosticmethods andmachine learning(ML)for laboratory image analysis,hopefully overcoming the limitations of late leukemia detection and determining its *** study establishes a Marine Predators Algorithm with Deep Learning Leukemia Cancer Classification(MPADL-LCC)algorithm onMedical *** projectedMPADL-LCC system uses a bilateral filtering(BF)technique to pre-process medical *** MPADL-LCC system uses Faster SqueezeNet withMarine Predators Algorithm(MPA)as a hyperparameter optimizer for feature ***,the denoising autoencoder(DAE)methodology can be executed to accurately detect and classify leukemia *** hyperparameter tuning process using MPA helps enhance leukemia cancer classification *** results are compared with other recent approaches concerning various measurements and the MPADL-LCC algorithm exhibits the best results over other recent approaches.

关键词： Leukemia cancer medical imaging image classification deep learning marine predators algorithm

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Botulinum toxin type A for treating chronic low back pain:A double blinded randomized control study

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World Journal of Methodology 2024年第3期14卷 119-125页

作者： Mantu Jain Shahnawaz Khan Paulson Varghese sujit kumar Tripathy Manaswini Mangaraj Department of Orthopaedics All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia Department of Biochemistry All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia

BACKGROUND Low back pain(LBP)is a prevalent issue that orthopedic surgeons frequently address in the outpatient *** can arise from various causes,with stiffness in the paraspinal muscles being a notable *** administration of Botulinum toxin type A(BoNT-A)has been found to alleviate back pain by relaxing these stiff *** BoNT-A is approved for use in numerous conditions,a limited number of randomized clinical trials(RCTs)validate its efficacy specifically for treating *** To study the safety and the efficacy of BoNT-A in minimizing pain and improving functional outcomes in patients of chronic LBP(CLBP).METHODS In this RCT,adults aged 18-60 years with mechanical LBP persisting for at least six months were *** were allocated to either the Drug group,receiving 200 Ipsen Units(2 mL)of BoNT-A,or the Control group,which received a 2 mL *** a 2-month follow-up period,both groups were assessed using the Visual Analog Scale(VAS)for pain intensity and the Oswestry Disability Index(ODI)for disability at the start and conclusion of the study.A decrease in pain by 50%was deemed clinically *** The study followed 40 patients for two months,with 20 in each group.A clinically significant reduction in pain was observed in 36 *** was a statistically significant decrease in both VAS and ODI scores in the groups at the end of two ***,when comparing the mean score changes,only the reduction in ODI scores(15 in the placebo group vs 16.5 in the drug group,clinically insignificant)was statistically significant(P=0.012),whereas the change in mean VAS scores was not significant(P=0.45).CONCLUSION The study concludes that BoNT-A does not offer a short-term advantage over placebo in reducing pain or improving LBP scores in CLBP patients.

关键词： Botulinum toxin type A Chronic low back pain Randomized control study Double-blinded Pain management Therapeutic efficacy

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Analysis of causes for revision in unicompartmental knee arthroplasty

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World Journal of Clinical Cases 2024年第25期12卷 5642-5645页

作者： sujit kumar Tripathy Siddharth Satyakam Pradhan Shahnawaz Khan Hursch Patel Department of Orthopaedics All India Institute of Medical SciencesBhubaneswar 751019OdishaIndia Department of Orthopedics All India Institute of Medical SciencesBhubaneswar 751019India Department of Medicine Kansas City University of Medicine and BiosciencesKansas CityMO 64106United States

The study by Zhao et al identifies the factors leading to the failure of unicompartmental knee arthroplasty(UKA)in their *** factors include substandard suturing of the wound,the presence of osteophytes and intra-articular loose bodies causing impingement,premature loosening of the tibial component,choosing unsuitable patients for the procedure,dislocation of the movable insert,and damage to the anterior cruciate ligament and medial collateral *** findings suggest that employing the correct surgical techniques and indications is essential for successful outcomes in the UKA.

关键词： Unicompartmental knee arthroplasty Arthroplasty Knee Failure Conversion TKA

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Wind environment around the setback building models

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Building Simulation 2021年第5期14卷 1525-1541页

作者： Amlan kumar Bairagi sujit kumar Dalui Department of Civil Engineering Indian Institute of Engineering Science and TechnologyShibpurHowrahIndia

The irregular shape of buildings always tenders an enormous challenge to the *** wind velocity at the pedestrian level has a specific approach from a comfortable point of *** investigation highlighted the characteristic of the pedestrian level wind velocity for distinct types of asymmetrical setback *** passed study explored the pedestrian level effect for the axisymmetric models,while this study is based on the models that have symmetry about a single *** study investigates the pedestrian level flow fluctuation of setback models with single and double side setbacks at multiple *** double-side double setback buildings are efficient to reduce 28%-30%velocity in front of the building and 68%-70%velocity behind the *** it suggests that the double side double setback building is efficient to maintain the velocity at the pedestrian level,roof level,and backside of the *** setback building can easily control the frequency of fluctuating velocity at downstream flow for both along and across wind conditions.

关键词： amplification factor pedestrian level flow setback model velocity spectra wind environment computational fluid dynamics(CFD)

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Effects of side ratio for ‘Y’ plan shaped tall building under wind load

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Building Simulation 2021年第4期14卷 1221-1236页

作者： Prasenjit Sanyal sujit kumar Dalui Department of Civil Engineering Meghnad Saha Institute of TechnologyKolkataIndia Department of Civil Engineering IIESTShibpurHowrahIndia

Wind load and response are the major factors that govern the most critical condition for designing tall buildings. This study discusses the variability of wind load and pressure on a Y plan shaped tall building due to the change in the building side ratio. The length to width ratio is changed keeping the total plan area same. The numerical study is done by ANSYS CFX. Two turbulence models, k-epsilon and shear stress transport (SST), are used for doing the numerical simulation and the results are compared with the previous wind tunnel results in a similar flow condition. Sample points were selected based on Audze–Eglais Uniform Latin Hypercube (AELH) method and the analytical expressions of force, moment and torsional coefficients of Y plan shaped tall building are proposed. These expressions are fitted very well and the AELH method has given a great set of sample points that have significantly decreased the total computational time. The graphical representations of these expressions for various coefficients are presented and discussed. Then pressure distributions on three different models are compared and the pros and cons of higher and lower values of side ratios are discussed.

关键词： computational fluid dynamics AELH sampling method least square polynomial side ratio force coefficient moment coefficient

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Interaction behavior and load sharing pattern of piled raft using nonlinear regression and LM algorithm-based artificial neural network

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Frontiers of Structural and Civil Engineering 2021年第5期15卷 1181-1198页

作者： Plaban DEB sujit kumar PAL Department of Civil Engineering G H Raisoni College of Engineering&ManagementPune 412207India Department of Civil Engineering National Institute of TechnologyAgartala 799046India

In the recent era,piled raft foundation(PRF)has been considered an emergent technology for offshore and onshore *** previous studies,there is a lack of illustration regarding the load sharing and interaction behavior which are considered the main intents in the present *** element(FE)models are prepared with various design variables in a double-layer soil system,and the load sharing and interaction factors of piled rafts are *** obtained results are then checked statistically with nonlinear multiple regression(NMR)and artificial neural network(ANN)modeling,and some prediction models are *** models are prepared with Levenberg-Marquardt(LM)algorithm for load sharing and interaction factors through backpropagation *** factor of safety(FS)of PRF is also estimated using the proposed NMR and ANN models,which can be used for developing the design strategy of PRF.

关键词： interaction load sharing ratio piled raft nonlinear regression artificial neural network

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Synthesis and characterization of ZnO-Al_2O_3 oxides as energetic electro-catalytic material for glucose fuel cell

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燃料化学学报 2015年第8期43卷 1004-1010页

作者： sujit kumar Guchhait Subir Paul Metallurgical and Material Engineering Department Jadavpur University

One of the thrust areas of research is to find an alternative fuel to meet the increasing demand for *** is a good source of alternative fuel for clean energy and is easily available in abundance from both naturally occurring plants and industrial *** oxidation of glucose in fuel cell requires high electro-catalytic surface of the electrode to produce the clean electrical energy w ith minimum energy losses in the *** and Pt based alloys exhibit high electro-catalytic properties but they are *** energy synthesis at economically cheap price,non Pt based inexpensive high electro catalytic material is *** synthesized Zn O-Al2O3composite is found to exhibit high electro-catalytic properties for glucose *** Cyclic Voltammetry and Chronoamperometry curves reflect that the material is very much comparable to Pt as far as the maximum current and the steady state current delivered from the glucose oxidation are *** image confirms the mixed oxide *** images morphology show increased 3D surface areas at higher *** attributed high current delivered from electrochemical oxidation of glucose on this electrode surface.

关键词： glucose energy materials electro-catalyst cyclic voltammetry chronoamperometry polarization

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Stabilization of expansive soils using chemical additives: A review

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Journal of Rock Mechanics and Geotechnical Engineering 2022年第4期14卷 1319-1342页

作者： Dharmendra Barman sujit kumar Dash Department of Civil Engineering Indian Institute of Technology KharagpurKharagpur721302India

Volume instability of expansive soils due to moisture fluctuations is often disastrous,causing severe damages and distortions in the supported *** is,therefore,necessary to adequately improve the performance of such soils that they can favorably fulfil the post-construction stability *** can be achieved through chemical stabilization using additives such as lime,cement and fly *** this paper,suitability of such additives under various conditions and their mechanisms are reviewed in *** is observed that the stabilization process primarily involves hydration,cation exchange,flocculation and pozzolanic *** degree of stabilization is controlled by several factors such as additive type,additive content,soil type,soil mineralogy,curing period,curing temperature,delay in compaction,pH of soil matrix,and molding water content,including presence of nano-silica,organic matter and sulfate *** of nano-silica not only improves soil packing but also accelerates the pozzolanic ***,presence of deleterious compounds such as sulfate or organic matter can turn the treated soils unfavorable at times even worser than the unstabilized ones.

关键词： Expansive soil Cement Lime Fly ash Pozzolanic reactions Sulfate attack

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A Compact Quad-Band Sickle-Shaped Monopole Antenna for GSM 900/WiMax/WLAN Applications

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Computers, Materials & Continua 2022年第10期73卷 397-410页

作者： sujit Goswami sujit kumar Mandal Soumen Banerjee Department of Electronics and Communication Engineering National Institute of TechnologyDurgapur713213West BengalIndia Department of Electronics and Communication Engineering University of Engineering and ManagementNew TownKolkata700156West BengalIndia

In this paper a novel,compact,microstrip-fed,quad-band monopole antenna is presented for the application of Global System for Mobile communication(GSM 900),Worldwide Interoperability for Microwave Access(WiMAX)and Wireless Local Area Network(WLAN).The proposed antenna comprises of a sickle-shaped structure with four circular arc strips,and a modified rectangular ground *** four strips of the antenna are independently responsible for the four different resonant frequencies of the operating bands and can be tuned separately to control the radiation *** proposed quad-band antenna is designed to resonate at 940 MHz for GSM 900,2.5 and 3.5 GHz for WiMAX and 5.85 GHz for WLAN *** the four intended operating bands,the antenna exhibits impedance bandwidth of 60 MHz(905–965MHz),80 MHz(2.45–2.53 GHz),110 MHz(3.48–3.59 GHz)and 2.39 GHz(4.82–7.21 GHz),*** the resonance frequency of the four bands,the gain of the proposed antenna is obtained as 4.2,2.5,1.7 and 1.9 dBi,respectively.A prototype of the designed antenna is fabricated and a good agreement between simulated and measured results is ***,the proposed antenna shows good radiation characteristics and gains at all the four operating bands.

关键词： Antenna gain GSM 900 IEEE 802.11a monopole strips quad-band sickle-shaped WiMAX WLAN

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