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Convergence of Weak Galerkin Finite Element Method for Second Order Linear Wave Equation in Heterogeneous Media

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Numerical Mathematics(Theory,Methods and Applications) 2023年第2期16卷 323-347页

作者： Bhupen Deka Papri Roy Naresh kumar raman kumar Department of Mathematics Indian Institute of Technology GuwahatiGuwahati 781039India

Weak Galerkin finite element method is introduced for solving wave equation with interface on weak Galerkin finite element space(Pk(K),P_(k−1)(∂K),[P_(k−1)(K)]^(2)).Optimal order a priori error estimates for both space-discrete scheme and implicit fully discrete scheme are derived in L1(L2)*** method uses totally discontinuous functions in approximation space and allows the usage of finite element partitions consisting of general polygonal *** element algorithm presented here can contribute to a variety of hyperbolic problems where physical domain consists of heterogeneous media.

关键词： Wave equation heterogeneous medium finite element method weak Galerkin method semidiscrete and fully discrete schemes optimal error estimates

Solar photovoltaic fed dual input LED lighting system with constant illumination control

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Frontiers in Energy 2016年第4期10卷 473-478页

作者： Kinattingal SUNDARESWARAN Kevin Ark kumar Payyalore raman VENKATESWARAN Sankaran PALANI Department of Electrical and Electronics Engineering National Instituteof Technology Tiruchirappalli 620015 India Bharat Heavy Electricals Limited Tiruchirappalli 620014 India Sudharsan Engineering College Pudukkottai 622501 India

A dual input LED lighting scheme with constant illumination is proposed in this paper. The scheme employs a photovoltaic array as the first input and a battery as the second one. A microcontroller is programmed to operate a changeover switch as well as a DC-DC converter for uninterrupted and constant illumina- tion in work place. The scheme is suitable for conference halls, laboratories, clean rooms, marriage halls, theaters, etc. The complete modeling, design and experimentation of the proposed scheme are explained and the economic viability of the scheme is justified.

关键词： photovoltaic LED light dual input P&O algorithm

Global geoepidemiology of gastrointestinal surgery rates in Crohn’s disease

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1835-1844页

作者： Simcha Weissman Muhammad Aziz Ayrton Bangolo Vignesh K Nagesh Htat Aung Midhun Mathew Lino Garcia Shiva A Chandar Praveena Karamthoti Harinder Bawa Aseel Alshimari Yabets Kejela Nazish Mehdi Chrishanti A Joseph Athri Kodali Rohan kumar Priya goyal Sanya Satheesha Fnu Nivedita Nicole Tesoro Tanni Sethi Gurpreet Singh Areej Belal Alina Intisar Hirra Khalid Samuel Cornwell Suchith B Suresh Kareem Ahmed Karabo K Marole Om P Anand Rahat B Reshi Tej I Mehta Sameh Elias Joseph D Feuerstein Department of Medicine Hackensack Meridian Health Palisades Medical CenterNorth BergenNJ 07047United States Division of Gastroenterology and Hepatology University of Toledo Medical CenterToledoOH 43614United States Department of Medicine University of WashingtonSeattleWA 98195United States Department of Radiology Johns Hopkins University HospitalBaltimoreMD 21218United States Division of Gastroenterology Beth Israel Deaconess Medical CenterHarvard Medical SchoolBostonMA 02215United States

BACKGROUND Data regarding the worldwide gastrointestinal surgery rates in patients with Crohn’s disease(CD)remains *** To systematically review the global variation in the rates of surgery in *** A comprehensive search analysis was performed using multiple electronic databases from inception through July 1,2020,to identify all full text,randomized controlled trials and cohort studies pertaining to gastrointestinal surgery rates in adult patients with *** included continent based demographic data,CD surgery rates over time,as well as the geoepidemiologic variation in CD surgery *** analyses were conducted using *** Twenty-three studies spanning four continents were *** median proportion of persons with CD who underwent gastrointestinal surgery in studies from North America,Europe,Asia,and Oceania were 30%(range:1.7%-62.0%),40%(range:0.6%-74.0%),17%(range:16.0%-43.0%),and 38%*** clear association was found regarding the proportion of patients undergoing gastrointestinal surgery over time in North America(R^(2)=0.035)and Europe(R^(2)=0.100).A moderate,negative association was seen regarding the proportion of patients undergoing gastrointestinal surgery over time(R^(2)=0.520)in *** There appears to be significant inter-continental variation regarding surgery rates in *** evidencebased guidelines accounting for the geographic differences in managing patients with CD is ***,as a paucity of data on surgery rates in CD exists outside the North American and European continents,future studies,particularly in less studied locales,are warranted.

关键词： Gastrointestinal surgery Crohn’s disease Geoepidemiology Inflammatory bowel disease Prevalence

Perceived effectiveness of infection control practices in Laundry of a tertiary healthcare centre

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World Journal of Emergency Medicine 2019年第2期10卷 114-115页

作者： raman Sharma Ashok kumar Vipin Koushal Department of Hospital Administration PGIMER

Hospital management in modern milieu has become patient oriented and good patient outcome is a result of effective and effi cient medical care along with provisions of hygienic food,clean linen,safe environment,congenial atmosphere and good interpersonal relationship.^[1]Laundry is one such important support service which ensures prevention as well as containment of hospital infections and is also a determining factor for maintenance of good image of a hospital[2].

关键词： Hospital management modern milieu oriented

Morphological phylogeny among 15 accessions of bamboos growing in Kokrajhar district of the Bodoland Territorial Area Districts,Assam

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Journal of Forestry Research 2018年第5期29卷 1379-1386页

作者： Anusriti Basumatary Sushil kumar Middha Talambedu Usha Samik Bhattacharya Birendra kumar Brahma Arvind kumar goyal Centre for Bamboo Studies and Department of Biotechnology Bodoland University DBT-BIF Centre Department of BiotechnologyPG Research CentreMaharani Lakshmi Ammanni College for Women Department of Biochemistry Maharani Lakshmi Ammanni College for Women Department of Molecular Ecology Max Planck Institute of Chemical Ecology

Bamboo is nature＇s wonderful gift historically associated with the rural population of the Bodoland Territorial Area ***,indiscriminate use of the resource and the ambiguity in the identification of bamboos in the absence of flowering characters pose a potential risk to the bamboo ***,we considered revising the taxonomic positions and phylogenetic relationships among 15 tropical bamboo species using 35 key morphological descriptors（MD） to assess the reliability of vegetative characters in identifying *** phylogenetic tree constructed from the similarity matrix,derived from an unweighted pair group method of analysis（UPGMA） of the 35 MDs,marginally deviated from the conventional taxonomic positions of the bamboo *** the two varieties,one forma of Bambusa vulgaris（***,***,***） and two species of the genus Dendrocalamus（*** and ***）clustered together in a single clade,and *** was distantly placed from their *** discrepancy with the conventional classification might have ensued since only vegetative characters such as culm anatomy,culm sheath,leaf,and leaf sheath were considered in the present *** the phylogenetic relationship among the 15 tropical bamboos（computed from exhaustive MDs）grossly corroborate the conventional taxonomic grouping,a molecular-marker-based multidisciplinary approach should resolve the remaining conflicts in bamboo identification.

关键词： Bamboo Bodoland Culm Culm-sheath Leaf-sheath Phylogenetic relationship conflict

YFa and analogs:Investigation of opioid receptors in smooth muscle contraction

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World Journal of Gastroenterology 2011年第40期17卷 4523-4531页

作者： Krishan kumar Ritika goyal Annu Mudgal Anita Mohan Santosh Pasha Peptide Synthesis Laboratory Institute of Genomics and Integrative Biology Delhi 110007 India University School of Basic and Applied Sciences GGSIP University Sector-16 C Dwarka Delhi 110075 India Department of Chemistry Motilal Nehru College University of Delhi Delhi 110021 India

AIM:To study the pharmacological profile and inhibition of smooth muscle contraction by YFa and its analogs in conjunction with their receptor selectivity. METHODS:The effects of YFa and its analogs (D-Ala2) YFa, Y (D-Ala2) GFMKKKFMRF amide and Des-Phe-YGGFMKKKFMR amide in guinea pig ileum (GPI) and mouse vas deferens (MVD) motility were studied using an isolated tissue organ bath system, and morphine and DynA (1-13) served as controls. Acetylcholine was used for muscle stimulation. The observations were validated by specific antagonist pretreatment experiments using naloxonazine, naltrindole and norbinaltor-phimine norBNI. RESULTS:YFa did not demonstrate significant inhibition of GPI muscle contraction as compared with mor-phine (15% vs 62%, P = 0.0002), but moderate inhibition of MVD muscle contraction, indicating the role of κ opioid receptors in the contraction. A moderate inhibition of GPI muscles by (Des-Phe) YFa revealed the role of anti-opiate receptors in the smooth muscle contraction. (D-Ala-2) YFa showed significant inhibition of smooth muscle contraction, indicating the involvement of mainly δ receptors in MVD contraction. These results were supported by specific antagonist pretreatment assays. CONCLUSION:YFa revealed its side-effect-free analgesic properties with regard to arrest of gastroin-testinal transit. The study provides evidences for the involvement of κ and anti-opioid receptors in smooth muscle contraction.

关键词： Opioid receptor Guinea pig ileum Mousevas deferens Smooth muscle contraction Gastrointestinal motility

Recent advances in assessment of soil erosion vulnerability in a watershed

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International Soil and Water Conservation Research 2021年第3期9卷 305-318页

作者： Shachi Pandey Parmanand kumar Miodrag Zlatic raman Nautiyal Vijender Pal Panwar Forest Ecology and Climate Change Division Forest Research InstituteDehradunIndia Faculty of Forestry Belgrade UniversityBelgradeSerbia Indian Council of Forestry Research and Education India

Soil erosion is one of the most critical hazards adversely affecting both environment and *** of the annual soil erosion rate provides information on soil erosion risk zones indicating the areas with high,severe and low *** and prediction of soil erosion has a long history of more than seven *** becomes imperative to be familiar with the quantum of studies conducted and methods employed across the world to assess vulnerability of ecosystems to soil erosion to plan strategies for their *** are several methods based on various factors like land use,soil quality,topography *** to assess the susceptibility of a region to soil *** time the gap in understanding of such models and their use around the world has *** models for assessing soil erosion exist but there is a lack of knowledge on spatial distribution of the methods being *** papers related to assessment of soil erosion vulnerability published during the past three decades(1991—2019)were *** 160 studies were reviewed to understand advances in the methods used to assess soil erosion vulnerability worldwide,identification of the most popular methods and proportion of studies conducted in the fragile region of *** results show that 18 different methods have mainly been used to assess soil erosion risk in different *** methods include statistical,physical,process based and empirical *** use of few physical methods like ANSWERS and SHE has decreased with time while that of physical and process methods like RUSLE,SWAT,WEPP and PESERA has increased with *** review highlighted that various models being used worldwide are based on their suitability to the *** also brings to attention that few models like PESERA,EUROSEM and WEPP are mostly being used concentrated in a particular *** like PESERA and EPM are mostly used in European region and may be encouraged to estimate soil er

关键词： Soil erosion vulnerability RUSLE MCDM

Emergence of non-albicans Candida species and antifungal resistance in intensive care unit patients

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Asian Pacific Journal of Tropical Biomedicine 2016年第5期6卷 455-460页

作者： Ravinder Kaur Megh Singh Dhakad Ritu goyal Rakesh kumar Department of Microbiology Lady Hardinge Medical College and Associated Hospitals Department of Microbiology Maulana Azad Medical College and Associated Lok Nayak Hospitals Department of Obstetrics and Gynaecology Maulana Azad Medical College and Associated Lok Nayak Hospitals Department of Anaesthesiology Maulana Azad Medical College and Associated Lok Nayak Hospitals

Objective: To evaluate the epidemiology of candidiasis and the antifungal susceptibility profile of Candida species isolated from the intensive care unit(ICU) ***: The study used a qualitative descriptive design. Relevant samples depending on organ system involvement from 100 ICU patients were collected and *** and speciation of the isolates was conducted by the biochemical *** susceptibility testing was carried out as per CLSI-M27-A3 ***: Ninety Candida isolates were isolated from the different clinical samples: urine(43.3%), tracheal aspirate(31.1%), urinary catheter(12.2%), endotracheal tube(7.8%),abdominal drains(3.3%), sputum(2.2%). The incidence of candidiasis caused by nonalbicans Candida(NAC) species(63.3%) was higher than Candida albicans(36.7%).The various NAC species were isolated as: Candida tropicalis(41.1%), Candida glabrata(10%), Candida parapsilosis(6.7%), Candida krusei(3.3%) and Candida kefyr(2.2%). The overall isolation rate of Candida species from samples was 53.3%. Antifungal susceptibility indicated that 37.8% and 7.8% of the Candida isolates were resistant to fluconazole and amphotericin B, ***: Predominance of NAC species in ICU patients along with the increasing resistance being recorded to fluconazole which has a major bearing on the morbidity and management of these patients and needs to be further worked upon.

关键词： Antifungal resistance Candida species Colonization Intensive care unit patients

Fusion of Region Extraction and Cross-Entropy SVM Models for Wheat Rust Diseases Classification

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Computers, Materials & Continua 2023年第11期77卷 2097-2121页

作者： Deepak kumar Vinay Kukreja Ayush Dogra Bhawna goyal Talal Taha Ali Department of Computer Science&Engineering Chitkara University Institute of Engineering and TechnologyChitkara UniversityPunjab140401India Department of Electronics&Communication Engineering Chandigarh UniversityPunjab140413India Department of Dental Industry Techniques Al-Noor University CollegeNineveh41018Iraq

Wheat rust diseases are one of the major types of fungal diseases that cause substantial yield quality losses of 15%–20%every *** wheat rust diseases are identified either through experienced evaluators or computerassisted *** experienced evaluators take time to identify the disease which is highly laborious and too *** wheat rust diseases are predicted at the development stages,then fungicides are sprayed earlier which helps to increase wheat yield *** solve the experienced evaluator issues,a combined region extraction and cross-entropy support vector machine(CE-SVM)model is proposed for wheat rust disease *** the proposed system,a total of 2300 secondary source images were augmented through flipping,cropping,and rotation *** augmented images are preprocessed by histogram *** a result,preprocessed images have been applied to region extraction convolutional neural networks(RCNN);Fast-RCNN,Faster-RCNN,and Mask-RCNN models for wheat plant patch *** layers of region extraction models construct a feature vector that is later passed to the CE-SVM *** a result,the Gaussian kernel function in CE-SVM achieves high F1-score(88.43%)and accuracy(93.60%)for wheat stripe rust disease classification.

关键词： Wheat rust diseases agricultural region extraction models intercropping image processing feature extraction precision agriculture