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Decadal trends in precipitable water vapor over the Indus River Basin using ERA5 reanalysis data

Journal of Mountain Science 2023年第10期20卷 2928-2945页

作者： seema rani Jyotsna SINGH Subhash SINGH Purushottam TIWARI Suraj MAL Department of Geography Institute of ScienceBanaras Hindu UniversityUttar Pradesh 221005India Department of Geography Shaheed Bhagat Singh CollegeUniversity of DelhiNew Delhi 110017India Center for the Study of Regional Development Jawaharlal Nehru UniversityNew DelhiDelhi 11oo6zIndia

Precipitable Water Vapor(PWV)constitutes a pivotal parameter within the domains of atmospheric science,and remote sensing due to its profound influence on Earth’s climate dynamics and weather *** exerts a significant impact on atmospheric stability absorption and emission of radiation,thus engendering alterations in the Earth’s radiative *** such,precise quantification of PWV holds the potential to enhance weather prognostication and fortify preparedness against severe meteorological *** study aimed to elucidate the spatial and temporal changes in seasonal and annual PWV across the Indus River Basin and its sub-basins using ERA5 reanalysis *** present study used ERA5 PWV(entire atmospheric column),air temperature at 2 m(t2m)and 500 hPa(T_500hPa),evapotranspiration,and total cloud cover data from 1960 to *** Sen slope estimator and Mann-Kendall test were used for trend *** and multiple regression methods were used to understand the association of PWV with other *** findings have unveiled the highest increase in mean PWV during the monsoon(0.40 mm/decade),followed by premonsoon(0.37 mm/decade),post-monsoon(0.27 mm/decade),and winter(0.19 mm/decade)throughout the study ***,the mean PWV exhibited the most pronounced positive trend in the sub-basin Lower Indus(LI),followed by Panjnad(P),Kabul(K),and Upper Indus(UI)across all seasons,except *** PWV has also risen in the Indus basin and its sub-basins over the last six *** exhibits a consistent upward trend up to an elevation of 3500 m within the basin which is most pronounced during the monsoon season,followed by the *** escalating PWV within the basin is reasonably ascribed to increasing air temperatures,augmented evapotranspiration,and heightened cloud *** findings hold potential utility for pertinent authorities engaged in water resource management and planning.

关键词： Himalaya Precipitable Water Vapor Indus River Basin Atmosphere Climate Change ERA5 Reanalysis data

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Evaluating spatial and elevation-wise daytime/nighttime LST trends across the Indus River Basin

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Journal of Mountain Science 2023年第11期20卷 3154-3172页

作者： Suraj MAL Kavya AGRAWAL seema rani Pyarimohan MAHARANA Viswanathan Anantha Venkat RAMAN Center for the Study of Regional Development Jawaharlal Nehru UniversityNew Delhi 110067India. Department of Geography Shaheed Bhagat Singh CollegeUniversity of DelhiNew Delhi 110017India Seth Phool Chand Bagla(P.G.)College Hathras(Dr Bhimrao Ambedkar University) Uttar Pradesh 204101India4 Department of GeographyInstitute of ScienceBanaras Hindu UniversityVaranasiUttar Pradesh 221005India Department of Environmental Studies Delhi College of Arts and CommerceUniversity of DelhiNetaji NagarNew Delhi110023India

Land surface temperature(LST)is a crucial parameter for understanding the Earth's surface energy balance,which provides insights into climate dynamics and local environmental ***,the present study aims to evaluate the spatial and elevation-wise trends in the daytime,nighttime,and mean LST across the Indus River Basin(IRB)using MODIS 8-day product for the period between 2002 and *** elevation,cloud cover,and land cover type data are used for explaining the emerging LST *** Theil slope estimator and MannKendall significance test were used for estimating the seasonal and annual LST *** findings show warming in mean daytime(0.020-0.024℃/yr)(except winter and post-monsoon),nighttime(0.013-0.049℃/yr),and mean(0.001-0.042℃/yr)LST in all the seasons(highest in monsoon).The annual mean nighttime LST(0.025℃/yr)is rising significantly faster than the mean daytime LST(0.0016℃/yr),showing the presence of a“nighttime warming effect”,which possibly increases human discomfort,particularly during the warm pre-monsoon and humid monsoon ***-dependent warming(EDW)is predominant in mean daytime LST in two elevation zones,namely(i)0-3 km and(ii)above 4 km,in all seasons,except in *** contrast,EDW in mean nighttime LST is observed up to 3 km and above 6 km in the basin in all the seasons,excluding *** warming trend in LST may be attributed to rising atmospheric moisture,cloud cover,declining snow cover,and changes in land cover to non-vegetated ***,further investigations will involve exploring the underlying factors contributing to the observed anomalies in nighttime LST,considering variables such as regional energy balance and atmospheric *** research contributes to an understanding of the thermal dynamics in the mountain basin,aiding in climate studies,land management,and the development of effective adaptation strategies in the IRB.

关键词： Land surface temperature Elevation dependent warming Indus river basin South Asia

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Assessment of tumor markers CA 19-9,CEA,CA 125,and CA 242 for the early diagnosis and prognosis prediction of gallbladder cancer

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World Journal of Gastrointestinal Surgery 2022年第11期14卷 1272-1284页

作者： seema rani Sinha Prem Prakash Rakesh Kumar Singh Dinesh Kumar Sinha Biochemistry Indira Gandhi Institute of Medical SciencesPatna 800014India General Surgery Indira Gandhi Institute of Medical SciencesPatna 800014India Surgical Gastroenterology Indira Gandhi Institute of Medical SciencesPatna 800014India Radiation Oncology State Cancer InstituteIndira Gandhi Institute of Medical SciencesPatna 800014BiharIndia

BACKGROUND Gallbladder cancer(GBC)is one of the leading and aggressive cancers in this region of *** is very difficult to diagnose in the early stage,as it lacks typical early signs and symptoms;thus,the diagnosis is often in the advanced stage,which ultimately leads to a poor 5-year survival *** markers including carbohydrate antigen 19-9(CA 19-9),carcinoembryonic antigen(CEA),CA 125,CA 242,and alpha fetoprotein are used as indicators in the diagnosis and prognosis of *** To compare tumor marker levels between GBC and benign GB diseases(GBDs)and to assess the combined use of tumor markers to increase the diagnostic accuracy for *** Patients of either sex aged≥18 years,with suspected GBC(GB polyp,irregular thick GB wall,GB mass,porcelain GB)on the basis of radiological imaging were included in this *** wall thickness using ultrasonography and tumor markers CEA,CA 125,CA 19-9,and CA 242 in all patients were *** cases after surgical intervention were divided into two groups,GBC and benign GBD,according to histopathological examination *** cases were followed up and clinical findings,radiological findings,and levels of tumor markers were *** A total of 200 patients were included in this study,of whom 80 patients had GBC and 120 patients had benign *** median(interquartile range)age was 52.0(41.0-60.0)years and the majority of patients(132,66.0%)were *** markers including CA 19-9,CA 125,CEA,and CA 242 were significantly elevated in patients with GBC(P<0.001).There was a significant reduction in tumor markers at 3 and 6 mo from baseline(P<0.001).The mean survival of patients with normal and elevated levels of tumor markers CA 125,CA 19-9,and CEA was comparable;however lymph node metastasis and CA 242 expression level were independent prognostic *** Serum levels of tumor markers including CA 19-9,CA 125,CEA,and CA 242 were significantly associated with ***,no significant asso

关键词： Benign gallbladder Tumor markers Survival Benign lesions Sensitivity Specificity

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A Review and Analysis of Localization Techniques in Underwater Wireless Sensor Networks

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Computers, Materials & Continua 2023年第6期75卷 5697-5715页

作者： seema rani Anju Anupma Sangwan Krishna Kumar Kashif Nisar Tariq Rahim Soomro Ag.Asri Ag.Ibrahim Manoj Gupta Laxmi Chandand Sadiq Ali Khan Department of CSE Guru Jambheshwar University of Science&TechnologyHisar125001India Department of Hydro and Renewable Energy Indian Institute of Technology RoorkeeIndia College of Computer Science and Information Systems Institute of Business ManagementKorangi Creek RoadKarachi75190SindhPakistan Faculty of Computing and Informatics Universiti Malaysia SabahJalan UMSKota Kinabalu88400SabahMalaysia Department of Electronics and Communication Engineering JECRC UniversityJaipurRajasthanIndia Computer Science Department UBIT Karachi UniversityKarachi75270Pakistan

In recent years,there has been a rapid growth in Underwater Wireless Sensor Networks(UWSNs).The focus of research in this area is now on solving the problems associated with large-scale *** of the major issues in such a network is the localization of underwater *** is required for tracking objects and detecting the *** is also considered tagging of data where sensed contents are not found of any use without *** is useless for application until the position of sensed content is *** article’s major goal is to review and analyze underwater node localization to solve the localization issues in *** present paper describes various existing localization schemes and broadly categorizes these schemes as Centralized and Distributed localization schemes ***,a detailed subdivision of these localization schemes is ***,these localization schemes are compared from different *** detailed analysis of these schemes in terms of certain performance metrics has been discussed in this *** the end,the paper addresses several future directions for potential research in improving localization problems of UWSN.

关键词： Underwater wireless sensor networks localization schemes node localization ranging algorithms estimation based prediction based

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Preparation and Characterization of SnO₂ Nanofibers via Electrospinning

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Advances in Nanoparticles 2016年第1期5卷 53-59页

作者： Rashmi rani seema Sharma Ferroelectric Research Laboratory Department of Physics A. N. College Patna India

Tin oxide (SnO2) nanofibers are successfully prepared by electrospinning homogeneous viscous solutions of tin acetate in polyvinylpyrrolidone (PVP). The electrospinning is carried out by applying a DC voltage to the tip of a syringe and maintaining the tip to collector distance (TCD), i.e. at DC electric field of 1.25 kV•cm–1. The electrospun nanofibers are calcined between 550℃ and 650℃ for 4 h. Both spun and heat treated nanofibers are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infra red spectroscopy (FTIR) etc. XRD analysis of calcined nanofibers confirms the formation of pure tin oxide. TEM study showed that fibers have a polycrystalline structure with multiple nano-grains.

关键词： Naonofibers TEM Electrospinning PVP

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Study of the structural and electrical behavior of Bi(Mg,Ti)O_(3)modified(Ba,Ca)TiO_(3)ceramics

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Journal of Advanced Dielectrics 2016年第4期6卷 72-80页

作者： Md.Kashif Shamim seema Sharma Arpana Singh Radheshyam Rai Rashmi rani Ferroelectric Research Laboratory Department of Physics A.N.CollegePatna 800013India School of Physics and Materials Science Shoolini University SolanHimachal PradeshIndia

The ability of BaTiO_(3)to form solid solutions with different dopants(both iso-and aliovalent)makes it versatile for various *** the present study,(Ba,Ca)TiO_(3)(BCT)is modified with Bi(MgTi)O_(3)(BMT)in search for new lead-free ferroelectric material and improve their *** this purpose,BCT acts as a main base material and BMT acts as a modifier to fabricate a multifunctional *** this study,we report the structural and electrical properties of lead free piezo-ceramics(1-x)(Ba_(0.8)Ca_(0.2))TiO_(3–x)Bi(Mg_(0.5)Ti_(0.5))O_(3)with x=0.2,0.4,0.5 prepared by solid-state sintering *** perovskite phase with tetragonal structure is obtained for all the compositions,which is reconfirmed by the Raman Spectroscopic *** study confirm the temperature stable behavior of the dielectric permittivity values above 300℃.The dielectric constant value decreases with increase in BMT doping *** Spectroscopic study confirms non-Debye type dielectric relaxation in the *** Nyquist plot and conductivity studies show the negative temperature coefficient of resistance behavior(NTCR)of the samples.

关键词： Perovskite Raman analysis non-Debye type XRD ferroelectrics.

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Green-synthesized gold nanoparticles from Plumeria alba flower extract to augment catalytic degradation of organic dyes and inhibit bacterial growth

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Particuology 2016年第1期14卷 78-86页

作者： rani Mata Aswathy Bhaskaran Sudha rani Sadras Department of Biochemistry and Molecular Biology School of Life Sciences Pondicherry University Pondicherry 605014 India

Bio-inspired eco-friendly gold nanoparticles were synthesized by a green method using aqueous Plume- ria alba flower extract （PAFE）. The use of 1% and 5% concentrations of PAFE resulted in two different sizes of P. alba gold nanoparticles, PAGNPsl and PAGNPs2, with surface plasmon resonance （SPR） peaks at 552 and 536 nm, respectively. Size-controlled formation of gold nanoparticles was indicated by the SPR shift observed with increasing concentration of PAFE. The accurate size and morphology of PAGNPs I and PAGNPs2 were determined by transmission electron microscope （TEM） analysis is found to be 28 ＋ 5.6 and 15.6 4-3.4 nm, respectively, and those are spherical in shape. The antibacterial activity of PAGNPsl and PAGNPs2 was tested against Escherichia coil; the small-sized PAGNPs2 exhibited better antibacterial activity with a 16-mm zone of inhibition at a concentration of 400 txg/mL. Furthermore, the catalytic activity of PAGNPsl and PAGNPs2 was analyzed on six hazardous dyes; PAGNPs2 exhibited more pro- nounced catalytic activity than PAGNPsl. Among all of the dyes, 4-nitrophenol was most rapidly degraded to 4-aminophenol by PAGNPs2 within 5 min. The mechanism of catalysis in the presence of PAGNPsl and PAGNPs2 can be described as an electron transfer process from donor NaBH4 to an acceptor. The facile green synthesis of such eco-friendly nanoparticles in bulk suggests this method has potential industrial applications.

关键词： Plumeria alba flower extract Gold nanoparticles Size control Antibacterial Catalytic efficiency

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Influence of Sintering Temperature on Densification, Structure and Microstructure of Li and Sb Co-Modified (K,Na)NbO<sub>3</sub>-Based Ceramics

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Materials Sciences and Applications 2011年第10期2卷 1416-1420页

作者： Rashmi rani seema Sharma 不详

Polycrystalline samples of Lead free (K0.5Na0.5)1-x(Li)x(Sb)x(Nb)1-xO3 ceramics with nominal compositions (x = 0.040 to 0.060) have been prepared by high temperature solid state reaction technique. X-ray diffraction (XRD) pattern shows that the crystal structure transforms from orthorhombic to tetragonal as Li and Sb content increases. Normal sintering process yield compounds with density ~98.2% of the theoretical value. Densification of the Li and Sb co-doped KNN ceramics might be explained by the liquid-phase sintering. This may be attributed to the low melting temperature of Li compounds that appears to promote the formation of a liquid phase during sintering.

关键词： KNN Perovskite XRD SEM

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An Optimized Framework for Surgical Team Selection

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Computers, Materials & Continua 2021年第11期69卷 2563-2582页

作者： Hemant Petwal Rinkle rani Department of Computer Science and Engineering Thapar Institute of Engineering and TechnologyPatiala147004India

In the healthcare system,a surgical team is a unit of experienced personnel who provide medical care to surgical patients during *** a surgical team is challenging for a multispecialty hospital as the performance of its members affects the efficiency and reliability of the hospital’s patient *** effectiveness of a surgical team depends not only on its individual members but also on the coordination among *** this paper,we addressed the challenges of surgical team selection faced by a multispecialty hospital and proposed a decision-making framework for selecting the optimal list of surgical teams for a given *** proposed framework focused on improving the existing surgical history management system by arranging surgery-bound patients into optimal subgroups based on similar characteristics and selecting an optimal list of surgical teams for a new surgical patient based on the patient’s *** this end,two population-based meta-heuristic algorithms for clustering of mixed datasets and multi-objective optimization were *** proposed algorithms were tested using different datasets and benchmark ***,the proposed framework was validated through a case study of a real postoperative surgical dataset obtained from the orthopedic surgery department of a multispecialty hospital in *** results revealed that the proposed framework was efficient in arranging patients in optimal groups as well as selecting optimal surgical teams for a given patient.

关键词： Multi-objective optimization artificial electric field algorithm mixed dataset clustering surgical team strength Pareto

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Improving Throughput of Transmission Control Protocol Using Cross LayerApproach

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Computer Systems Science & Engineering 2022年第12期43卷 1231-1239页

作者： Jansi rani Sella Veluswami Sri Sivasubramaniya Nadar College of Engineering Chennai603103India

Most of the internet users connect through wireless networks. Majorpart of internet traffic is carried by Transmission Control Protocol (TCP). It hassome design constraints while operated across wireless networks. TCP is the traditional predominant protocol designed for wired networks. To control congestionin the network, TCP used acknowledgment to delivery of packets by the end *** wired network, packet loss signals congestion in the network. But rather inwireless networks, loss is mainly because of the wireless characteristics such asfading, signal strength etc. When a packet travels across wired and wireless networks, TCP congestion control theory faces problem during handshake betweenthem. This paper focuses on finding this misinterpretation of the losses using crosslayer approach. This paper focuses on increasing bandwidth usage by improvingTCP throughput in wireless environments using cross layer approach and hencenamed the proposed system as CRLTCP. TCP misinterprets wireless loss as congestion loss and unnecessarily reduces congestion window size. Using the signalstrength and frame error rate, the type of loss is identified and accordingly theresponse of TCP is modified. The results show that there is a significant improvement in the throughput of proposed TCP upon which bandwidth usage isincreased.

关键词： Bandwidth wireless networks transmission control protocol throughput

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