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Simultaneous portal vein thrombosis and splenic vein thrombosis in a COVID-19 patient:A case report and review of literature

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World Journal of Clinical Cases 2024年第18期12卷 3561-3566页

作者： Binyamin Ravina Abramowitz Michael Coles Ayse Aytaman Bani chander-Roland Daniel Anthony DiLeo Department of Gastroenterology and Hepatology SUNY Downstate Health Sciences UniversityBrooklynNY 11203United States Department of Gastroenterology and Hepatology Brooklyn Campus of the Veterans Affairs New York Harbor Healthcare SystemBrooklynNY 11209United States

BACKGROUND It is well-described that the coronavirus disease 2019(COVID-19)infection is associated with an increased risk of thrombotic *** there have been many cases of pulmonary emboli and deep vein thrombosis in these patients,reports of COVID-19 associated portal vein thrombosis(PVT)have been *** present a unique case of concomitant PVT and splenic artery thrombosis in a COVID-19 *** SUMMARY A 77-year-old-male with no history of liver disease presented with three days of left-sided abdominal *** week earlier,the patient was diagnosed with mildly symptomatic COVID-19 and was treated with nirmatrelvir/*** exam revealed mild right and left lower quadrant tenderness,but was otherwise *** laboratory findings included white blood cell count 12.5 K/μL,total bilirubin 1.6 mg/dL,aminoaspartate transferase 40 U/L,and alanine aminotransferase 61 U/*** tomography of the abdomen and pelvis revealed acute PVT with thrombus extending from the distal portion of the main portal vein into the right and left *** noted was a thrombus within the distal portion of the splenic artery with resulting splenic *** workup including prothrombin gene analysis,factor V Leiden,cardiolipin antibody,and JAK2 mutation were all *** with enoxaparin was initiated,and the patient’s pain *** was discharged on *** It is quite uncommon for PVT to present simultaneously with an arterial thrombotic occlusion,as in the case of our *** thrombotic manifestations are classically linked to hypercoagulable states including malignancy and hereditary and autoimmune *** infections such as Epstein-Barr virus,cytomegalovirus,viral hepatitis,and COVID-19 have all been found to increase the risk of splanchnic venous occlusions,including *** our patient,prompt abdominal imaging led to early detection of thrombus,early treatment,and an exce

关键词： COVID-19 Thromboembolism Portal vein thrombosis Splenic artery thrombosis Anticoagulation Lovenox Thrombotic complication Case report

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Fusobacterium is toxic for head and neck squamous cell carcinoma and its presence may determine a better prognosis

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Cancer Communications 2024年第8期44卷 879-883页

作者： Anjali chander Jacopo Iacovacci Aize Pellon Radhika Kataria Anita Grigoriadis John Maher Cynthia Sears Gilad Bachrach Teresa Guerrero Urbano Mary Lei Imran Petkar Anthony Kong Tony Ng Ester Orlandi Nicola Alessandro Iacovelli Loris De Cecco Mara Serena Serafini David Moyes Tiziana Rancati Miguel Reis Ferreira Centre for Host-Microbiome Interactions King’s College LondonLondonUK Comprehensive Cancer Centre King’s College LondonLondonUK Department of Oncology Guys and St Thomas NHS Foundation TrustLondonUK Data Science Unit Fondazione IRCCS Istituto Nazionale dei TumoriMilanItaly Medicine Department Johns Hopkins University School of MedicineBaltimoreMarylandUSA Institute of Biomedical and Oral Research The Hebrew University-Hadassah School of Dental MedicineHadassah Ein Kerem CampusJerusalemIsrael Dipartimento di scienze Clinico-Chirurgiche Diagnostiche e PediatricheUniversitàdegli studi di PaviaPaviaItaly Radiation Oncology Department Fondazione IRCCS Istituto Nazionale dei TumoriMilanItaly Department of Medicine Weill Cornell MedicineNew YorkUSA

Head and neck squamous cell carcinoma(HNSCC)is a devastating *** morbid treatment,5-year survival rates remain poor(28%-67%)[1].There is a significant knowledge gap regarding how the microbiota may impact HNSCC treatment efficacy[2].We used microbiome data from two independent cohorts to test and validate the hypothesis that oral bacteria are associated with HNSCC prognosis and in vitro models to investigate mechanistic *** are detailed in Supplementary Materials.

关键词： prognosis squamous carcinoma

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LionRank: lion algorithm-based metasearch engines for re-ranking of webpages

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Science China(Information Sciences) 2018年第12期61卷 65-80页

作者： P.VIJAYA Satish chander Waljat College of Applied Sciences

Due to the rapid growth of the web, the process of collecting the relevant web pages based on the user query is one of the major challenging tasks in recent days. Hence, it is very complicated for the users to know the most relevant information even though various search engines are widely employed. To deal with users' trouble in identifying the relevant information from the web, we have proposed a meta-lion search engine to capture and analyze the ranking scores of various search engines and thereby, generate the re-ranked score results. Accordingly, LionRank, a lion algorithm-based meta-search engine is proposed for the re-ranking of the web pages. Here, different features like text based, factor based, rank based and classifier based features are used by the underlying search engines. In classifier based feature extraction,we have used the fuzzy integrated extended nearest neighbor(FENN) classifier to include the semantics in feature extraction. Moreover, an intelligent re-ranking process is proposed based on the lion algorithm to fuse the features scores optimally. Finally, the results of the proposed LionRank is analyzed with the web page database collected through four benchmark queries, and the quantitative performance are analyzed using precision, recall, and F-score. From the results, we proved that the proposed LionRank obtained the maximum F-score of 81% as compared with that of existing search engines like QuadRank, Outrank, Google,Yahoo, and Bing.

关键词： web technology meta-search engine feature extraction lion algorithm FENN classifier

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Plasma Spray Deposition of HA-TiO2 on β-phase Ti-35Nb-7Ta-5Zr Alloy for Hip Stem: Characterization of Bio-mechanical Properties, Wettability, and Wear Resistance

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Journal of Bionic Engineering 2020年第5期17卷 1029-1044页

作者： Harjit Singh chander Prakash Sunpreet Singh School of Mechanical Engineering Lovely Professional UniversityPhagwaraPunjab-144411India Mechanical Engineering National University of SingaporePincode-119244Singapore

In this work,a biomimetic coating of hydroxyapatite(HA)-and titania(TiO2)was deposited on low elastic β-phase Ti-35Nb-7Ta-5Zr(β-TNTZ)alloy by plasma spray deposition technique for orthopedic *** effect of TiO2 reinforcement on microstructure,mechanical properties,and bioactivity was *** morphology,coating thickness,elemental composition,and phase composition of the developed coatings were *** biomechanical behavior of the deposited coatings was investigated in terms of surface hardness,elastic modulus,and adhesion *** was found from the morphological investigation that the TiO2 reinforcement improves the microstructure and prevents the formation of defects in the *** biomimetic HA-TiO2 coated surface possessed pores,size ranging from 200 nm-600 nm that benefits the apatite growth and *** EDS spectrum,mapping,and XRD analysis show that the deposited layerβ-TCP,CaO,TTCP,TiO2 *** HA-TiO2 coating exhibits a very dense and thick layer of 100μm-125am that exhibits excellent adhesion strength to offer mechanical interlocking to prevent *** alloying of TiO2 improves the hardness from 1.67 GPa to 2.95 GPa that enhances the wear *** was found that HA-TiO2 coating exhibits better hydrophilic and biocompatible surface as compared to HA-coating.

关键词： β-phase Ti-35Nb-7Ta-5Zr alloy plasma spray porosities bio-ceramic coating nano-indentation hardness bond strength wettability

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Land use induced blurring of forest-grassland transition in north-west Himalaya-A case study using Moving Split Window boundary detection technique

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Journal of Mountain Science 2020年第12期17卷 3085-3096页

作者： Shevita PANDITA haris. chander DUTT Ecological Engineering Laboratory Department of BotanyUniversity of JammuJammu-180006India

Transition zone or ecotone is a unique community sandwiched between two communities/ecosystems/*** ecotones in Himalaya remained unexplored for many ecological aspects like biodiversity,phyto-sociology,boundary detection and even impact of change in land use pattern(anthropogenic activity).The most accepted and widespread technique called as Moving Split Window(MSW) technique is used for detection of vegetation and environmental boundaries at four different sites in the lesser stratum of north-west *** the four sites were at different distances from the nearest human inhabited *** activities like grazing,herb collection,wood collection *** common at proximal *** activities have led to the change in land use *** this study,we have tried to work out the impact of the change in land use pattern(human interference) on the vegetation and basic environmental parameters like soil pH,electrical conductivity and moisture on forestgrassland ecotone in north-west *** on mountain steepness was also collected and *** dissimilarity profile using the statistical tool Squared Euclidian Distance(SED) indicated that species turnover locations increase with the increase in distance of ecotones from human *** ecotones at distant locations from human villages are characterized with blunt as well as sharp peaks for vegetation data,however,conditions are reverse in case of the proximal *** study also reveals that as the distance between the ecotone and human settlements increases,the complex conditions like multiple vegetation boundaries prevails on the *** this regard,land use induced blurring of forest-grassland transition in north-west Himalaya is summed up in the study.

关键词： Ecotone Moving Split Window Squared Euclidean Distance Transect Dissimilarity function Environment variables

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Hybrid Offset Slider Crank Mechanism for Anthropomorphic Flexion in Prosthetic Hands

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Journal of Bionic Engineering 2023年第1期20卷 308-322页

作者： Banibrata Datta Sekar Anup chander Srikanth Vasamsetti CSIR-CSIO Sector-30CChandigarh160030India

The underactuated fingers used in prosthetic hands account for a large part of design consideration in anthropomorphic prosthetic hand *** are considerable numbers of designs available for underactuated prosthetic fingers in literature but,emulating the anthropomorphic flexion movement is still a challenge due to the complex nature of the *** address this challenge,a hybrid mechanism using both linkage-based mechanism and tendon-driven actuation has been proposed in this *** presented mechanism includes a novel offset slider-crank-based finger that has been designed using a combination of different lengths of cranks and connecting *** prototypes of both the new mechanism and the conventional tendon-driven mechanism are constructed and compared experimentally based on interphalangeal joint angle trajectory during *** angles achieved through the new hybrid mechanism are compared with the conventional tendon-driven mechanism and the Root Mean Square Error(RMSE)values have been calculated by comparing to the anthropomorphic flexion angles of the published *** RMSE values calculated for three interphalangeal joints of the hybrid mechanism are found to be less than their counter-parts of the conventional tendon-driven *** addition to achieving resemblance to anthropomorphic flexion angles,the mechanism is designed within the anthropometric human finger dimensions.

关键词： Anthropomorphism Hybrid mechanism Prosthetic-Slider-crank.Underactuated

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On investigating the soda-lime shot blasting of AZ31 alloy:Effects on surface roughness,material removal rate,corrosion resistance,and bioactivity

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Journal of Magnesium and Alloys 2021年第4期9卷 1278-1290页

作者： Gurmider Singh Sunpreet Singh chander Prakash Seeram Ramakrishna SIMAP University of Grenoble AlpesFrance Department of Mechanical Engineering National University of SingaporeSingapore School of Mechanical Engineering Lovely Professional UniversityPhagwaraPunjab 144411India

In the present study,a novel method of surface finish improvement is proposed using shot blasting of soda lime(SBSL)beads on the Mg-AZ31 *** effect of the soda blasting process parameters,such as blast pressure,stand-off distance,and blast duration,have been studied in-response of material removal rate(MRR)and surface roughness(SR)and corresponding statistical models have been *** multi-objective optimization has also been performed to obtain parameters for maximum MRR and minimum *** corrosion behavior of the treated specimens has been performed to study their in-vitro biodegradability in simulated body fluid(SBF)for 1,3,7,10,15,and 21 *** wettability study of the SBSL treated samples has been investigated using sessile drop ***,cell adhesion test has also been performed to study the biocompatibility characteristics of the SBSL treated samples using Huh7 liver cell *** on obtained quantitative data as well as scanning electron microscopy analysis of treated samples,the SBSL treatment of the AZ31 alloy has been found highly useful in producing biocompatibility surfaces along with desirable morphological features.

关键词： AZ31 Soda-lime Surface roughness Material removal rate Corrosion Wettability Biocompatibility

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Performance comparison of mono and polycrystalline silicon solar photovoltaic modules under tropical wet and dry climatic conditions in east-central India

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Clean Energy 2022年第1期6卷 165-177页

作者： Niranjan Singh Baghel Nikhil chander Department of Electrical Engineering and Computer Science Indian Institute of Technology BhilaiGEC CampusSejbaharRaipur-492015ChhattisgarhIndia

This work focuses on the performance comparison of monocrystalline and polycrystalline Si solar photovoltaic(SPV)modules under tropical wet and dry climatic conditions in east-central India(21.16°N 81.65°E,Raipur,Chhattisgarh).This study would help to select the SPV module for system installation in the east-central part of the *** comparative analysis,we used performance ratio(PR)and efficiency as figures of *** plane-of-array(POA)irradiance was used to determine the efficiency of the *** decomposition and transposition models calculated the POA values from the measured global horizontal *** data were analysed systematically for 6 months in the non-rainy season,from October 2020 to March *** attention was given to solar irradiance,ambient temperature and module temperature-the parameters that affect the performance of PV *** month of October showed the highest variation in irradiance and *** highest average module temperatures(51-52℃)were observed in October-November,while the lowest average module temperatures(34℃ for mono-Si and 36℃ for poly-Si)were observed in *** highest value of average monthly POA irradiance(568 W/m^(2))was observed in February and the lowest(483 W/m^(2))in *** results showed that the monocrystalline SPV module performed better than the polycrystalline module under all weather *** maximum observed values of mono-Si and poly-Si panel PRs were 0.89 and 0.86,respectively,in December.

关键词： solar photovoltaic performance climatic conditions global horizontal irradiance plane-of-array

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Environmental variables vis-a-vis distribution of herbaceous tracheophytes on northern sub-slopes in Western Himalayan ecotone

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Ecological Processes 2019年第1期8卷 551-559页

作者： Shevita Pandita Vinod Kumar haris. chander Dutt Department of Botany University of JammuJammuJammu and Kashmir 180006India Department of Botany DAV UniversityJalandhar 144012India Assistant Professor Department of BotanyGovt College for women Gandhi NagarJammu 180003India

Background:In the northern hemisphere,the north face of the mountains has a high diversity of species which is attributed to the moist and shady conditions at the north *** environmental variables may also influence the species diversity on the northern faces of the mountain and therefore needs to be studied in *** northern slopes represent three different sub-slopes—north,north east,and north *** the current investigation of Pir-Panjal and Dauladhar ranges in Bhadarwah valley,fine-scale studies on the relationship between vegetation and four variables(soil pH,moisture content,electrical conductivity,and steepness)were *** study determined the role of these variables on the vegetation of three different *** sampling was done at the confluence of two communities(forest and grassland)at three sites on the northern sub-slopes of the lesser stratum in western ***:The result revealed that rich herbaceous diversity prevails on the lesser Himalayan stratum(Bhadarwah valley).As many as 65.8%species differ from site to site,whereas species commonality among the sites is *** role of environmental variables on the species composition at different sub-slopes of the north mountain face is deduced through canonical correspondence analysis(CCA).Conclusions:The availability of solar light increases air and soil temperature on the north east–facing *** the environmental variables(soil pH,moisture,electrical conductivity,and mountain steepness)are insignificant at pure north face for the species ***,it can be concluded that some other environmental variables may influence the species composition which are needed to be further investigated.

关键词： North face Environmental variables Species heterogeneity Treeline ecotone Species turnover,Canonical correspondence analysis

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Displacement Field due to Nonuniform Slip along a Long Dip-Slip Fault in Two Welded Half-Spaces

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Journal of Earth Science 2012年第6期23卷 864-872页

作者： Sunita Rani Neeru Bala Ram chander Verma Department of Mathematics Guru Jambheshwar University of Science and TechnologyHisar 125001India

The solution of static deformation of two homogeneous, isotropic, and perfectly elastic half-spaces in welded contact due to a long dip-slip fault with uniform slip is well known. The aim of the present article is to obtain the static deformation of two homogeneous, isotropic, and perfectly elastic half-spaces in welded contact due to nonuniform slip along a long dip-slip fault. The fault is vertical and lies entirely in the lower half-space, extending up to the interface. Four slip profiles are considered： lin- ear, parabolic, elliptic, and cubic. Closed-form expressions for the elastic residual field have been ob- tained for the different slip profiles. The displacement field due to four nonuniform slip profiles is com- pared with the displacement field due to uniform slip. For comparison, we have assumed the source potency for different slip profiles to be the same, which is achieved by taking the fault slip at the inter- face constant and varying the fault width. It is found that the displacement field varies significantly at the fault width rather than at the interface. Moreover, uniform slip along the fault makes the edges singular. This singularity at the lower edge is not present in the case of nonuniform slip along a long dip-slip fault.

关键词： nonuniform slip two welded half-spaces dip-slip fault displacement field.

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