检索结果-南通市图书馆

Insights into gastrointestinal manifestation of human immunodeficiency virus:A narrative review

在线全文

学校读者我要写书评

暂无评论

World Journal of Virology 2025年第1期14卷 51-62页

作者： Pratiksha Moliya Anmol singh Navdeep singh Vikash kumar Aalam Sohal Department of Transplant Hepatology University of Nebraska Medical CenterOmahaNE 69198United States Department of Medicine Tristar Centennial Medical CenterNashvilleTN 37203United States Department of Medicine Government Medical CollegeAmritsar 143001PunjabIndia Department of Gastroenterology and Hepatology Creighton University School of MedicinePhoenixAZ 85012United States

Human immunodeficiency virus(HIV)modifies CD4-positive cells,resulting in immunodeficiency and a wide range of gastrointestinal(GI)*** burden of HIV-related GI illnesses has significantly evolved with the widespread use of antiretroviral therapy(ART).While ART has effectively reduced the occurrence of opportunistic infections,it has led to an increase in therapy-related GI *** esophageal conditions in HIV patients include gastroesophageal reflux disease,idiopathic esophageal ulcers,herpes simplex virus,cytomegalovirus(CMV),and candidal ***’s sarcoma,a hallmark of acquired immunodeficiency syndrome,may affect the entire GI *** and peptic ulcer disease are also frequently seen in patients with ***,often linked to both opportunistic infections and ART,requires careful *** diarrhea,often a sign of colitis caused by bacterial infections such as Shigella or Clostridium difficile,is *** bowel lymphoma,although rare,is increasing in *** disorders,including proctitis,fissures,and anal squamous cell carcinoma,are particularly relevant in homosexual men,underlining the importance of timely *** review comprehensively explores the epidemiology,pathogenesis,and treatment considerations for the various GI disorders associated with HIV,highlighting the importance of accurate diagnosis and effective treatment to improve outcomes for HIV-infected patients.

关键词： Human immunodeficiency virus Opportunistic infections Antiretroviral treatment Gastrointestinal

Telemedicine and public health–pearls and pitfalls

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Methodology 2025年第2期15卷 177-179页

作者： Ranjeet kumar Sinha Sony Sinha Prateek Nishant Arvind kumar Morya Arshi singh Department of Community Medicine Patna Medical CollegePatna 800004BiharIndia Department of Ophthalmology-Vitreo-Retina Neuro-Ophthalmology and OculoplastyAll India Institute of Medical SciencesPatna 801507BiharIndia Department of Ophthalmology ESIC Medical CollegePatna 801103BiharIndia Department of Ophthalmology All India Institute of Medical SciencesHyderabad 508126TelanganaIndia Department of Ophthalmology Guru Nanak Eye CenterNew Delhi 110001India

We hereby comment on the interesting systematic review by Grewal et al where they have provided an overall picture of the current status of available tele-health programs in the United States with emphasis on the Amazon *** analysis is an appreciable effort in discovering the features available and features lacking in these tele-health *** concept of tele-health originated to curtail the need for physical attendance of patients at health clinics,and has been beneficial during the coronavirus disease 2019 *** implore that the pearls and pitfalls of these programs have to be understood by policymakers prior to forming a consensus regarding the availability,accessibility and affordability of these programs as methods of healthcare *** proliferation of tele-health programs in their current form may pose threats to patient and provider safety and medicolegal ***,patients and providers must work together to improve them to meet their expectations and enable them to provide the best care for the ailing public.

关键词： Telemedicine Remote Access Availability Accessibility Affordability Ethics Privacy Medicolegal liability

Comparative efficacy of hyperbaric bupivacaine vs hyperbaric ropivacaine in spinal anesthesia for cesarean section:A metaanalysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Methodology 2025年第2期15卷 154-165页

作者： Rishi Anand Deb Sanjay Nag Roushan Patel Prashant Sharma Vamsi Krishna Uppalapati Umesh kumar singh Department of Anaesthesiology Tata Main HospitalJamshedpur 831001JhārkhandIndia

BACKGROUND Intrathecal bupivacaine is the traditional anesthetic drug used in spinal anesthesia for caesarean sections(CSs),but ropivacaine has emerged as a potential *** meta-analysis compares the efficacy and safety of intrathecal hyper-baric bupivacaine vs hyperbaric ropivacaine for cesarean *** To systematically evaluate and compare the efficacy and safety of intrathecal hyperbaric bupivacaine and hyperbaric ropivacaine for spinal anesthesia in *** A thorough search of electronic databases was carried out to find pertinent randomized controlled trials(RCTs)comparing intrathecal hyperbaric ropi-vacaine and hyperbaric bupivacaine during ***,Cochrane database,Google Scholar,and Scopus were searched,and papers from January 2000 to January 2024 were deemed eligible and filtered using predetermined inclusion and exclusion *** were assessed for methodological quality,and data were extracted for time to adequate anesthesia(sensory and motor blockade),duration of sensory and motor block,hemodynamic changes and side effect *** standardized mean difference with 95%CI was used for continuous *** variables were assessed using the Mantel-Haenszel test and the random effect model to compute the odds *** Total 8 RCTs were selected from a pool of 119 search results for *** meta-analysis evaluated pooled effect sizes and assessed heterogeneity among the *** primary objective was to compare key outcomes to identify any significant variances in efficacy and safety profiles between two local *** analysis revealed that the difference in the onset of sensory blockade between the two local anesthetics was statistically insignificant(P=0.1586).However,the onset of motor blockade appeared to be faster with bupivacaine(P=0.03589).Additionally,the regression of sensory and motor blockade occurred earlier in the ropivacaine ***,the duration of the first analgesic

关键词： Ropivacaine Bupivacaine Anesthesia Spinal Cesarean section Meta-analysis

Isolated intramedullary tuberculoma of the dorsal cord:a rare clinico-radiological entity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Medicine 2010年第12期3卷 1004-1005页

作者： sumeet Bhargava Rajul Rastogi Gaurav Jindal Amrit kumar singh Vaibhav Rastogi Yash Diagnostic Center Yash Hospital and Research CenterCivil LinesKanth RoadMoradabad(UP)-244001India Neuron Advanced Neurosurgery CenterMoradabodUPIndia Yash Diagnostic Center Yash Hospital and Research CenterCivil LinesKanth RoadMoradabad(UP) -244001India

Tuberculous infection manifesting as an isolated intramedullary tuberculoma of the spinal cord is distinctly *** report a case of a 35 year old woman presenting with an insidious onset of myelopathy,where MRI showed c... 详细信息

关键词： Intramedullary tuberculoma MRI Dorsal cord

Fractionally Delayed Kalman Filter

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2020年第1期7卷 169-177页

作者： Abhinoy kumar singh Discipline of Electrical Engineering Indian Institute of Technology Indore

The conventional Kalman filter is based on the assumption of non-delayed measurements. Several modifications appear to address this problem, but they are constrained by two crucial assumptions: 1) the delay is an integer multiple of the sampling interval, and 2) a stochastic model representing the relationship between delayed measurements and a sequence of possible non-delayed measurements is known. Practical problems often fail to satisfy these assumptions, leading to poor estimation accuracy and frequent track-failure. This paper introduces a new variant of the Kalman filter, which is free from the stochastic model requirement and addresses the problem of fractional *** proposed algorithm fixes the maximum delay(problem specific), which can be tuned by the practitioners for varying delay possibilities. A sequence of hypothetically defined intermediate instants characterizes fractional delays while maximum likelihood based delay identification could preclude the stochastic model requirement. Fractional delay realization could help in improving estimation accuracy. Moreover, precluding the need of a stochastic model could enhance the practical applicability. A comparative analysis with ordinary Kalman filter shows the high estimation accuracy of the proposed method in the presence of delay.

关键词： Gaussian likelihood Kalman filter optimal Kalman gain randomly delayed measurements

Major Development Under Gaussian Filtering Since Unscented Kalman Filter

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2020年第5期7卷 1308-1325页

作者： Abhinoy kumar singh IEEE Department of Electrical Engineering Indian Institute of Technology Indore

Filtering is a recursive estimation of hidden states of a dynamic system from noisy *** problems appear in several branches of science and technology,ranging from target tracking to biomedical monitoring.A commonly practiced approach of filtering with nonlinear systems is Gaussian *** early Gaussian filters used a derivative-based implementation,and suffered from several drawbacks,such as the smoothness requirements of system models and poor stability.A derivative-free numerical approximation-based Gaussian filter,named the unscented Kalman filter(UKF),was introduced in the nineties,which offered several advantages over the derivativebased Gaussian *** the proposition of UKF,derivativefree Gaussian filtering has been a highly active research *** paper reviews significant developments made under Gaussian filtering since the proposition of *** review is particularly focused on three categories of developments:i)advancing the numerical approximation methods;ii)modifying the conventional Gaussian approach to further improve the filtering performance;and iii)constrained filtering to address the problem of discrete-time formulation of process *** review highlights the computational aspect of recent developments in all three *** performance of various filters are analyzed by simulating them with real-life target tracking problems.

关键词： Bayesian framework cubature rule-based filtering Gaussian filters Gaussian sum and square-root filtering nonlinear filtering quadrature rule-based filtering unscented transformation

Derated Mode of Power Generation in PV System Using Modified Perturb and Observe MPPT Algorithm

在线全文

学校读者我要写书评

暂无评论

Journal of Modern Power Systems and Clean Energy 2021年第5期9卷 1183-1192页

作者： Vinit kumar Mukesh singh Thapar Institute of Engineering and Technology PatialaPunjabIndia

In a grid-integrated photovoltaic system(GIPVS),there exist issues such as surplus active power and inadequate performance of maximum power point tracking(MPPT).A surplus active power causes the overvoltage problem at the point of common coupling in low-or medium-voltage grid during the peak hours of power ***,the inadequate performance of the MPPT algorithm results in power loss due to high settling time during the sudden change of ***,to solve the surplus power problem,the curtailment of active power is suggested with improved MPPT algorithm under variable irradiance *** this paper,a derated power generation mode(DPGM)control strategy is presented for the curtailment of active ***,a drift-free(named as modified)perturb and observe(P&O)technique is also proposed to improve the performance of the MPPT ***,the DPGM control scheme with the intermediate boost converter shaves the surplus active power during the peak hours of power ***,the modified MPPT algorithm deals with the fluctuation of irradiance during non-peak ***,the proposed control scheme delivers in a more efficient system during the peak hours of power *** addition,it reduces the power loss and settling time during the change of irradiance for non-peak *** on the proposed control scheme,a 30 kW system has been simulated in MATLAB/Simulink using Simpower tools under different environmental conditions.

关键词： Derated power generation mode(DPGM) gridintegrated photovoltaic system intermediate boost converter modified perturb and observe voltage source inverter

Investigation of structural, morphological and electrochemical properties of mesoporous La2CuCoO6 rods fabricated by facile hydrothermal route

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2020年第7期27卷 987-995页

作者： Jashandeep singh Ashok kumar Department of Physics National Institute of Technology KurukhsetraHaryana 136119India Department of Applied Sciences National Institute of Technical Teachers Training and ResearchChandigarh 160019India

This work introduces the facile hydrothermal synthesis of double perovskite La2CuCoO6.X-ray diffraction pattern confirmed the formation of a monoclinic phase with P121/c1 *** electron microscopy results revealed that the self-assembled porous rods were composed of nanocrystallite *** estimated specific surface area of these mesoporous rods with an average pore diameter of 6 nm was^41 m^2·g^–*** presence of ions with oxidation states of La^3+,Cu^2+,and Co^2+/Co^3+on the surface of the mesoporous La2CuCoO6 rods was confirmed by X-ray photoelectron spectroscopic *** cyclicvoltammetry and chronopotentiometry,the electrode fabricated from the mesoporous La2CuCoO6 rods were found to exhibit pseudocapacitive behavior with a specific capacitance of 259.4 F·g^–1 at a current density of 0.5 A·g^–***^89%retention in specific capacitance was achieved after 1000 charge/discharge cycles at a constant current density of4 A·g^–1.

关键词： rare earth double perovskites oxide materials hydrothermal electrochemical

Multi-Objective Optimization of Fused Deposition Modeling for Mechanical Properties of Biopolymer Parts Using the Grey-Taguchi Method

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2023年第1期36卷 51-64页

作者： Kapil kumar Hari singh Department of Mechanical Engineering National Institute of TechnologyKurukshetra136119India

The urgent need to develop customized functional products only possible by 3D printing had realized when faced with the unavailability of medical devices like surgical instruments during the coronavirus-19 disease and the ondemand necessity to perform surgery during space *** have recently been the most appropriate option for fabricating surgical instruments via 3D printing in terms of cheaper and faster *** all 3D printing techniques,fused deposition modelling(FDM)is a low-cost and more rapid printing *** article proposes the fabrication of surgical instruments,namely,forceps and hemostat using the fused deposition modeling(FDM)*** mechanical properties are the only indicator to judge the quality of the functional *** mechanical properties of FDM-processed parts depend on various process *** parameters are layer height,infill pattern,top/bottom pattern,number of top/bottom layers,infill density,flow,number of shells,printing temperature,build plate temperature,printing speed,and fan *** strength and modulus of elasticity are chosen as evaluation indexes to ascertain the mechanical properties of polylactic acid(PLA)parts printed by *** experiments have performed through Taguchi’s L27orthogonal array(OA).Variance analysis(ANOVA)ascertains the significance of the process parameters and their percent contributions to the evaluation ***,as a multiobjective optimization technique,grey relational analysis(GRA)obtains an optimal set of FDM process parameters to fabricate the best parts with comprehensive mechanical *** electron microscopy(SEM)examines the types of defects and strong bonding between *** proposed research ensures the successful fabrication of functional surgical tools with substantial ultimate tensile strength(42.6 MPa)and modulus of elasticity(3274 MPa).

关键词： Fused deposition modeling Mechanical properties Taguchi method ANOVA Grey relational analysis SEM