检索结果-南通市图书馆

Unleashing the potential of morphotropic phase boundary based hybrid triboelectric–piezoelectric nanogenerator

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materiomics 2024年第4期10卷 792-802页

作者： Sugato Hajra Aneeta Manjari Padhan Basanta kumar Panigrahi Phakkhananan Pakawanit Zvonko Jagličić Naratip Vittayakorn yogendra kumar Mishra Sanghoon Lee Hoe Joon Kim Department of Robotics and Mechatronics Engineering Daegu Gyeongbuk Institute of Science and TechnologyDaegu42988Republic of Korea Department of Electrical Engineering Siksha O Anusandhan UniversityBhubaneswar751030India Synchrotron Research and Applications Division Synchrotron Light Research InstituteNakhon Ratchasima30000Thailand Institute of Mathematics Physics and Mechanics&Faculty of Civil and Geodetic EngineeringUniversity of LjubljanaJadranska191000LjubljanaSlovenia Advanced Materials Research Unit Department of ChemistrySchool of ScienceKing Mongkut's Institute of Technology LadkrabangBangkok10520Thailand Mads Clausen Institute NanoSYDUniversity of Southern DenmarkAlsion 26400SønderborgDenmark Robotics and Mechatronics Research Center Daegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu42988Republic of Korea

Morphotropic phase boundary(MPB)-based ceramics are excellent for energy harvesting due to their enhanced physical properties at phase boundaries,broad operating temperature range,and ability to customize properties for efficient conversion of mechanical energy into electrical *** this work,Bi_(1–x)Na_(x)Fe_(1–x)Nb_(x)O_(3)(x=0.20,0.30,0.32 and 0.40,BNFNO abbreviation)based ceramics were synthesized using a solid-state route and blended with Polydimethylsiloxane(PDMS)to achieve flexible *** material characterization and energy harvesting were performed by designing a hybrid piezoelectric(PENG)-triboelectric(TENG)*** voltage and current of PENG,TENG,and hybrid bearing same device area(2 cm×2 cm)were recorded as 11 V/0.3μA;60 V/0.7μA;110 V/2.2μ*** strategies for enhancing the output performance of the hybrid device were evaluated,such as increased surface area(creating micro-roughness and porous morphology)and increasing electrode size and multi-layer hybrid device *** self-powered acceleration monitoring was demonstrated using the hybrid ***,the low-frequency-based wave energy is converted into electrical energy,confirming the usage of hybrid PENG-TENG devices as a base for battery-free sensors and blue energy harvesting.

关键词： Lead-free Acceleration Wave energy Morphotropic

Design of Digital Filters for Medical Images Using Optimized Learning Based Multi-Level Discrete Wavelet Cascaded Convolutional Neural Network

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Harbin Institute of Technology(New series) 2024年

作者： Vaibhav Jain Ashutosh Datar yogendra kumar Jain Department of Electronics and Instrumentation Engineering， Rajiv Gandhi Proudyogiki Vishwavidyalaya Department of Electronics Engineering， Samrat Ashok Technological Institute

In digital signal processing， image enhancement or image denoising are challenging task to preserve pixel quality. There are several approaches from conventional to deep learning that are used to resolve such issues. But they still face challenges in terms of computational requirements， overfitting and generalization issues， etc. To resolve such issues， optimization algorithms provide greater control and transparency in designing digital filters for image enhancement and denoising. Therefore， the paper presented a novel denoising approach for medical applications using an Optimized Learning-based Multi-level Discrete Wavelet Cascaded Convolutional Neural Network (OLMWCNN). In this approach， the optimal filter parameters are identified to preserve the image quality after denoising. The performance and efficiency of the OLMWCNN filter are evaluated， demonstrating significant progress in denoising medical images while overcoming the limitations of conventional methods.

关键词：

Systematic review with expert consensus on use of extracorporeal hemoadsorption in septic shock:An Indian perspective

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Critical Care Medicine 2024年第1期13卷 65-75页

作者： Yatin Mehta Abdul Samad Ansari Amit kumar Mandal Dipanjan Chatterjee Gauri Shankar Sharma Prachee Sathe Purvesh V Umraniya Rajib Paul Sachin Gupta Vinod Singh yogendra Pal Singh Institute of Critical Care and Anesthesiology Medanta The MedicityGurgaon 122001HaryanaIndia Department of Critical Care Nanavati Max Super Specialty HospitalMumbai 400065India Department of Pulmonology Sleep and Critical CareFortis HospitalMohaliPunjabMohali 160062PunjabIndia Department of Cardio-Puimonary Critical Care Medica Superspecialty HospitalKolkata 700099India Department of Critical Care Medicine Fortis HospitalNew Delhi 110070India Department of Critical Care Medicine D.Y.Patil Medical CollegeSant Tukaram NagarPimpri ColonyPimpri-ChinchwadPune 411018India Department of Critical Care Medicine Bhailal Amin General HospitalVadodara 390003GujaratIndia Department of Internal Medicine Apollo HospitalsJubilee HillsHyderabad 500033India Department of Anaesthesiology Narayana Superspeciality HospitalGurugram 122002India Department of Critical Care Medicine Institute of Critical Care MedicineHospital Name-Sir Ganga Ram HospitalNew Delhi 110001India Department of Critical Care Medicine Max Super Speciality HospitalDelhi 110092India

BACKGROUND Septic shock is a severe form of sepsis characterised by deterioration in circulatory and cellular-metabolic *** standard therapy,the outcomes are *** adjuvant therapy,such as CytoSorb®extracorporeal haemoadsorption device,has been investigated and shown promising ***,there is a lack of some guidance to make clinical decisions on the use of CytoSorb®haemoadsorption as an adjuvant therapy in septic shock in Indian ***,this expert consensus was *** To formulate/establish specific consensus statements on the use of CytoSorb®haemoadsorption treatment based on the best available evidence and contextualised to the Indian *** We performed a comprehensive literature on CytoSorb®haemoadsorption in sepsis,septic shock in PubMed selecting papers published between January 2011 and March 20232021 in English *** statements for a consensus document were developed based on the summarised literature analysis and identification of knowledge *** a modified Delphi approach combining evidence appraisal and expert opinion,the following topics related to CytoSorb®in septic shock were addressed:need for adjuvant therapy,initiation timeline,need for Interleukin-6 levels,duration of therapy,change of adsorbers,safety,prerequisite condition,efficacy endpoints and management *** expert members from critical care,emergency medicine,and the intensive care participated and voted on nine statements and one open-ended *** Eleven expert members from critical care,emergency medicine,and the intensive care participated and voted on nine statements and one open-ended *** 11 experts in the consensus group(100%)participated in the first,second and third round of *** three iterative voting rounds and adapting two statements,consensus was achieved on nine statements out of nine *** consensus expert panel also recognised the necessity to form an associatio

关键词： Consensus CytoSorb Cytokine Hemoadsorption Refractory Sepsis Septic shock

Seismic safety evaluation methodology for masonry building and retrofitting using splint and bandage technique with wire mesh

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2022年第4期16卷 478-505页

作者： Pravin kumar Venkat Rao PADALU yogendra SINGH Earthquake Engineering Research Center International Institute of Information Technology Hyderabad(IIIT-H)Telangana 500032India Department of Earthquake Engineering Indian Institute of Technology Roorkee(IITR)Uttarakhand 247667India

The paper presents a seismic safety assessment of unreinforced masonry(URM)building using two *** first approach uses the‘Pier Analysis’method,based on the concept of equivalent lateral stiffness,where in-plane and out-of-plane actions are considered *** second approach is developed with the program SAP2000,where the linear response is evaluated using continuum‘finite element modelling’(FEM).Both methods are compared to evaluate the safety of wall piers and the differences in the outcomes under combined gravitational and lateral seismic *** analysis results showed that few wall elements are unsafe in in-plane and out-of-plane *** is also observed that the pier analysis method is conservative compared to FEM,but can be used as a simplified and quick tool in design offices for safety assessment,with reasonable *** safeguard the URM wall piers under lateral loads,a retrofitting technique is adopted by providing vertical and horizontal belts called splints and bandages,respectively,using welded wire mesh(WWM)*** study using the‘Pier Analysis’shows that the lateral load capacity of unsafe URM piers can be enhanced up to 3.67 times and made safe using the applied retrofitting ***,the retrofitting design methodology and recommendations for application procedures to on-site URM buildings are discussed in detail.

关键词： unreinforced masonry seismic in-plane and out-of-plane forces pier analysis finite element modelling splint and bandage technique with wire mesh

Torque teno virus:Its prevalence and isotypes in North India

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2008年第39期14卷 6044-6051页

作者： Mohammad Irshad Shiwani Singh Khushboo Irshad Sanjay kumar Agarwal yogendra kumar Joshi Clinical Biochemistry Division Department of Laboratory MedicineAll India Institute of Medical SciencesNew Delhi-110029India Department of Biochemistry All India Institute of Medical SciencesNew Delhi-110029India Department of Nephrology All India Institute of Medical SciencesNew Delhi-110029India Department of Gastroenterology and Human Nutrition All India Institute of Medical SciencesNew Delhi-110029India

AIM： To investigate the prevalence and genotype distribution of Torque teno virus （TTV） in patients with different liver diseases and chronic renal failure treated at a referral hospital in North India. METHODS： Whereas prevalence of TFV was based on amplification of conserved region of ORF2 of TTV genome, the genotyping of TFV was carried out using restriction fragment length polymorphism （RFLP） procedure on the N22 region of ORFI. RESULTS： TTV-DNA was detected in 137 of 513 （26.7%） patients with liver diseases and 38 of 65 （58.5%） patients with chronic renal failure. Trv was also detected in 2/7% of healthy controls. The sequence analysis of the PCR product from 10 randomly selected cases failed to show a significant sequence divergence when compared with that of the TRM1 isolate of TTV genotype 1. The results of genotyping in 55 randomly selected patients showed the presence of genotype 1 （G1） in 53 （96.4%） and genotype 2 （G2） in 2 cases （3.6%）, respectively. Other genotypes were not identified in this patient subgroup, suggesting that G1 is predominant in this area. The results of genotyping by RFLP were also supported by phylogenetic tree analysis, where G1 was found to be the major genotype. CONCLUSION： These results indicate that TTV is moderately present in Indian patients, with G1 to be the major genotype in North India. The pathogenicity and etiological role of TTV in different diseases is still a question mark and warrant further studies.

关键词： Torque teno virus Genotype Restriction fragment length polymorphism Torque Teno Hepatocellular carcinoma

Non-timber forest products and their contribution to healthcare and livelihood security among the Karbi tribe in Northeast India

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ecological Processes 2019年第1期8卷 492-512页

作者： Puranjoy Mipun Nazir Ahmad Bhat Dipankar Borah yogendra kumar Centre for Advanced Studies in Botany North-Eastern Hill UniversityShillongMeghalaya 793022India Department of Botany Rajiv Gandhi UniversityDoimukhArunachal Pradesh 791112India

Introduction:Non-timber forest products(NTFPs)have been an essential source for food,medicine,and handicraft products among the indigenous populations living in forested areas for *** research on the restoration of the importance of NTFPs and their value addition could potentially guide the development of new nutraceutical products in the *** present study aims to investigate the diversity of non-timber forest products of the Karbi Anglong District of Assam in Northeast ***:Multistage sampling technique was used for the study.A total of 70 respondents from 7 randomly selected villages were interviewed with a well-developed semi-structured questionnaire to explore the utilisation of *** analysis was done using four quantitative indices:(a)use report(UR),(b)use value(UV),(c)informant consensus factor(ICF),and(d)fidelity level(FL).Results:A total of 138 plant species belonging to 59 families distributed in 110 genera were recorded and identified as NTFPs of 1 type or the *** include 42%having ethnomedicinal use,33%as edible forest products,15%as household building materials and utensils,6%as spices and condiments,and 4%as herbal *** the medicinal plant species,Abroma augustum(L.)L.f.,Amaranthus spinosus L,and Geophila repens(L.)*** the highest ICF and ***:The present study confirms that NTFPs have played an essential role in the healthcare and livelihood of the indigenous people of the Karbi tribe throughout their generations and continue to do ***,the species with high value for both ICF and FL could be used for the development of new,cheap,effective,and eco-friendly herbal formulations for healthcare management leading to economic and social benefits to the indigenous ***,anthropogenic pressure and overexploitation of NTFPs may lead to the loss of this precious natural resource from this area.

关键词： East Karbi Anglong Ethnobotany Forest income NTFPs Wildlife sanctuary Quantitative study Medicinal plants

Comparative Studies of Different Organs of Nyctanthes arbortristis in Modulation of Cytokines in Murine Model of Arthritis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2007年第2期20卷 154-159页

作者： BRIJESH RATHORE BHOLANATH PAUL BHUSAN P CHAUDHURY ASHOK kumar SAXENA ANAND PRAKASH SAHU yogendra kumar GUPTA Immunobiology Laboratory Central Pathology Laboratory Preventive Toxicology Laboratory Industrial Toxicology Research Centre M. G. MargLucknow 226001India

Objective To study the modulation effect of pro- and anti-inflammatory cytokines following long term use of water soluble ethanol extracts from different organs of Nyctanthes arbortristis （NAT） in mouse model of arthritis. Methods Arthritis was induced in mice by two injections of Freund＇s complete adjuvant on days 0 and 12 in the sub-planter surface of the right hind paw. Results Injection of adjuvant resulted in a maximum primary edema of the footpad with erythema, and edema and distortion of joints of the right hind paw after 24-48 hours. Second injection of FCA led to the formation of secondary swellings persisting more than four weeks that spread onto the other hind limb but to a lesser extent. Histological analysis of the ankle on day 47 showed marked evidence of cartilage destruction in association with pannus formation and moderate bone resorption. Proinfiammatory cytokine levels in the inflamed joint homogenate were elevated on days 2, 14, and 47. Oral administration of leaf and fruit extracts in arthritic mice reduced joint homogenate levels of tumor necrosis factor-α, interleukin-1β, and interleukin-6 on days 2, 14, and 47 in comparison to untreated arthritic mice. Intedeukin-10 level was elevated in the inflamed joint on days 2, 14, and 47 in comparisons to untreated arthritic mice. Confusion Evidence of lesser inflammation of the footpad and joint and associated histological observation support the therapeutic benefit of leaf and fruit extracts from Nyctanthes arbortristis. This study helps in understanding the mechanism of anti-inflammatory action of Nyctanthes arbortristis in the light of pro- and anti-inflammatory cytokine balance.

关键词： Nyctanthes arbortristis Arthritis TNF-α IL- 1β IL-6 IL-10

Evaluation of cytotoxic and anti-tumor activity of partially purified serine protease isolate from the Indian earthworm Pheretima posthuma

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Asian Pacific Journal of Tropical Biomedicine 2013年第11期3卷 896-901页

作者： Mahendra kumar Verma Francies Xavier yogendra kumar Verma Kota Sobha Department of Biotechnology R.V.R.& J.C.College of Engineering Department of Microbiology All India Institute of Medical Sciences

Objective:To isolate,partially purify and evaluate the cytotoxic and antitumor activity of a serine protease from the chosen Indian earthworm Pheretima ***:Whole animal extract was prepared and purified its protein constituents by size and charge based chromatographic separation techniques using Sephadex G-50 and DEAE-Cellulose resin *** molecular weight of the protein isolate was determined and analyzed for its cytotoxic property against Vero cells in different dilutions(1:20 and 1:40)and anti-tumor activity by MTT assay(a colorimetric assay)using breast cancer cell line MCF-7,with tamoxifen as ***:One of the protein constituents after purification was characterized as serine protease by Caseinolytic plate diffusion *** molecular weight of this purified isolate was determined,by SDS-PAGE analysis with standard protein ladder,as of 15 *** performed tests suggested that the 15kDa fraction has potent cytotoxic activity and satisfactory antitumor activity as well in ***:Exact molecular mechanism of the cytotoxic and antitumor activities is yet to be explored and currently we are working on ultra-purification and biophysical characterization of this *** investigation into the mechanism(s)of cytotoxic and antitumor activities at molecular level would be useful in treatment of various classes of cancer and viral infections in future.

关键词： Earthworm fibrinolytic enzyme Cytotoxicity Antitumor activity Serine protease Minimum inhibitory concentration

Intracranial Abscesses: An Institutional Study

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Modern Neurosurgery 2020年第2期10卷 297-306页

作者： yogendra Singh Tarun kumar Gupta Gaurav Jaiswal Krishna Lodha Neurosurgery Department R.N.T Medical College Udaipur Rajasthan India

Background: Brain abscess is defined as a focal intracranial infection that is initiated as an area of cerebritis and evolves into a collection of pus surrounded by a vascularized capsule. These are complications of head trauma, neurosurgical operations, meningitis, and otogenic, mastoid, and paranasal air sinus infections. Management involves both medical and surgical treatment. Surgical management includes either aspiration or excision of lesions larger than 2.5 cm in diameter, depending on brain location. However, literature on surgical treatment is replete with several procedures which, on their own, may not determine outcome. Aim: Aim is to study the epidemiology, management and outcome of various treatment modalities of brain abscess in our institute. Material and Methods: We conducted a retrospective study of demographic data as well as indications, treatment modalities, and outcomes of various surgical procedures for evacuation of intracranial abscesses in patients admitted to our Neuro-intensive care unit at R.N.T. Medical College, Udaipur, Rajasthan, India from January 2013 to June 2019. Results: We carried out 53 procedures in 43 (30 male and 13 female) patients with various intracranial abscesses. Most abscesses [16, i.e. 37%] occurred in the second decade and second most common in the first decade [15, i.e. 34%]. In infants 4 (9%) cases of intracranial abscesses were present. None of the infants had features of congenital heart disease. The predisposing factors were mostly otolaryngologic (15) or posttraumatic (8). Most commonly abscesses were located in frontal 13 (30%) followed by cerebellar 9 (21%). Burr hole evacuation was done in 74% of cases. 3 patients (7% of cases) died. Prognosis appears to worsen with ventriculitis, multiple abscesses especially in infants, and immunosuppression. Conclusion: In conclusion, brain abscess still continues to be a formidable challenge, with prognosis that dramatically improved over the last decades due to advances

关键词： Brain Abscess Aspiration Cerebritis