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role of intestinal ultrasound in ulcerative colitis: A systematic review

World Journal of Meta-Analysis 2024年第3期12卷 42-67页

作者： Partha Pal Mohammad Abdul Mateen Kanapuram Pooja Nandhakumar rajadurai rajesh Gupta Manu Tandan Nageshwar reddy Duvvuru Department of Medical Gastroenterology Asian Institute of GastroenterologyHyderabad 500082India Department of Diagnostic radiology and Imaging Asian Institute of GastroenterologyHyderabad 500082India

BACKGrOUND Intestinal ultrasound(IUS)is an emerging,non-invasive,and highly sensitive diagnostic tool in inflammatory bowel disease(IBD),including ulcerative colitis(UC).Despite its potential,its adoption in clinical practice is limited due to a lack of standardization and *** To perform a comprehensive scoping review based on a systematic literature review on IUS in UC to inform current *** Ninety-nine original articles about ultrasonography in UC were identified among 7608 citations searching PubMed and EMBASE databases for systematic *** IUS can be useful as an initial diagnostic strategy in patients with suspected IBD/*** UC,IUS can predict endoscopic response,histologic healing,and steroid responsiveness in acute severe *** can predict response to biologics/small molecules(as early as 2 wk).IUS correlates well with ileocolonoscopy,but IUS could miss rectal,jejunal,and upper GI lesions in suspected IBD and colon polyps or extra-intestinal manifestations in known *** is useful in special situations(children,pregnancy,and postoperative Crohn's disease).Inter-observer agreement is acceptable and trained physicians have comparable diagnostic ***-of-care ultrasound impacted management in 40%-60%of ***-held IUS has excellent agreement with conventional *** IUS is a non-invasive,highly sensitive tool in the diagnosis and monitoring of UC,offering excellent patient ***-of-care ultrasound by IBD physicians can significantly impact clinical decision-making.

关键词： Ulcerative colitis Intestinal ultrasound Inflammatory bowel disease Diagnosis Monitoring

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Assessment of Heavy Metals Contamination of Topsoil and Street Dust around Cement Factory in Southern Jordan

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Journal of Environmental Protection 2024年第6期15卷 672-696页

作者： Omar Ali Al-Khashman Alia Omar Al-Khashman Navasingh rajesh Jesudoss Hynes Hani M. Alnawafleh Pitchumani Shenbaga Velu Department of Environmental Engineering Al-Hussein Bin Talal University Maan Jordan MD/Ministry of Health Amman Jordan Department of Mechanical Engineering Mepco Schlenk Engineering College Si-vakasi India Department of Mining and Mineral Engineering Al-Hussein Bin Talal University Maan Jordan Department of Mechanical Engineering PSR Engineering College Sivakasi India

Evaluation of assessment of the metal processes governing the metals distribution in soil and dust samples is very significant and protects the health of human and ecological system. recently, special attention has given to the assessment of metals pollution impact on soil and dust within industrial areas. This study aims to assess the metal contamination levels in the topsoil and street dust around the cement factory in Qadissiya area, southern Jordan. The levels of seven metals (namely Fe, Zn, Cu, Pb, Cr, Cd, and Mn) were analyzed using Flame Atomic Absorption Spec-trophotometer (FAAS) to monitor, evaluate, and to compare topsoil and road dust pollution values of metals of the different types of urban area. The physicochemical parameters which believed to affect the mobility of metals in the soil of the study area were determined such as pH, EC, TOM, CaCO3 and CEC. The levels of metal in soil samples are greater on the surface but decrease in the lower part as a result of the basic nature of soil. The mean values of the metals in soil can be arranged in the following order: Zn > Pb > Mn > Fe > Cu > Cr > Cd. The relatively high concentration of metals in the soil sample was attributed to anthropogenic activities such as traffic emissions, cement factory and agricultural activities. Correlation coefficient analysis and the spatial distribution of indices and the results of statistical analysis indicate three groups of metals: Fe and Mn result by natural origin, Zn, Pb, Cu and Zn result by anthropogenic origin (mainly motor vehicle traffic and abrasion of tires) while Cd is mixed origin. The higher content level values of metals of anthropogenic source in soil samples indicate that it is a source of contamination of air in the studied area. .

关键词： Cement Dust Heavy Metals Contamination risk Assessment Statistical Analysis Jordan

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磁性纳米铁对土壤理化性质及微生物群落和代谢的影响研究进展

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环境化学 2024年第6期43卷 1820-1831页

作者：何建荣魏晓贺刘煜莹苗欣宇欧阳少虎岳晴李鑫 ramasamy rajesh Kumar 天津理工大学环境科学与安全工程学院天津300384 南开大学环境科学与工程学院环境污染过程与基准教育部重点实验室天津市城市生态环境修复与污染防治重点实验室天津300071 天科院环境科技发展(天津)有限公司天津300450 Bharti大学印度491001

近年来,磁性纳米铁因其独特性能在生物医学、农业、工业、生命科学及环境保护领域广泛应用.随着磁性纳米铁的大范围应用,其对环境和人体健康将带来的潜在影响,已经引起科学界的广泛关注.本文系统总结了近年来磁性纳米铁的相关文献资料,... 详细信息

近年来,磁性纳米铁因其独特性能在生物医学、农业、工业、生命科学及环境保护领域广泛应用.随着磁性纳米铁的大范围应用,其对环境和人体健康将带来的潜在影响,已经引起科学界的广泛关注.本文系统总结了近年来磁性纳米铁的相关文献资料,探讨了磁性纳米铁的合成方法、表征及环境应用;我们重点强调了磁性纳米铁对土壤理化性质及微生物群落和代谢的潜在影响.最后展望了磁性纳米铁在未来的环境应用、发展及纳米毒理学亟待研究的重要问题.本文旨在更加全面地揭示磁性纳米铁的环境可持续性,为其安全使用和环境功能化应用提供一定的参考.

关键词：磁性纳米铁土壤环境影响微生物群落代谢

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均相和非均相催化微藻脂质提取和酯交换制备生物燃料的研究进展

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Chinese Journal of Catalysis 2024年第4期59卷 97-117页

作者： Vinoth Kumar Ponnumsamy Hussein E.Al-Hazmi Sutha Shobana Jeyaprakash Dharmaraja Dipak Ashok Jadhav rajesh Banu J Grzegorz Piechota Bartłomiej Igliński Vinod Kumar Amit Bhatnagar Kyu-Jung Chae Gopalakrishnan Kumar 高雄医科大学药物与应用化学系环境医学研究中心中国台湾高雄高雄医科大学医学研究部中国台湾高雄格但斯克理工大学土木与环境工程学院波兰纳鲁特维察格但斯克范朗大学工程与技术学院建筑绿色技术与可持续发展研究组越南胡志明市工程技术学院科学与人文系化学部印度泰米尔纳德邦韩国海洋大学海洋科学与工程学院环境工程系韩国釜山泰米尔纳德邦中央大学生命科学系印度泰米尔纳德邦 GPCHEM沼气研究与分析实验室波兰尼古拉斯哥白尼大学化学系波兰克兰菲尔德大学水与能源学院英国拉彭兰塔工业大学工程科学学院分离科学系芬兰韩国海洋大学海洋可再生能源工程专业韩国釜山延世大学土木与环境工程学院韩国首尔斯塔万格大学科学技术学院化学、生物科学与环境工程研究所挪威斯塔万格

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化... 详细信息

随着化石燃料燃烧导致的二氧化碳排放不断加剧气候变化,且化石燃料储量日益减少,寻求可再生能源已成为一项紧迫的任务.其中,藻类衍生可持续燃料因具有成本优势和可运输性,在解决全球能源危机方面展现出广阔前景,备受关注.利用化学转化技术从微藻中提取脂质,并通过酯交换反应可以将其转化为脂肪酸甲酯,是生产绿色生物燃料的有效途径.这一过程涉及游离脂肪酸、磷脂和甘油三酯的提取,并且生产过程能耗低,成为满足日益增长的能源需求的一种理想解决方案.本文综述了微藻脂质提取和酯交换制备生物燃料的相关研究进展.首先,介绍了微藻脂质的提取方法,包括溶剂提取法、索氏提取法、布利格和戴耶法、超临界二氧化碳提取以及离子液体溶剂法等,并分析了各方法的优缺点.随后,重点阐述了酯交换技术在微藻脂质转化中的应用,包括酸碱催化、酶催化以及原位酯交换反应等,并探讨了这些技术的反应机理、催化剂选择、反应器设计以及生物油生产工艺等方面的研究进展.通过综述上述研究进展,为微藻脂质的生产和应用提供了理论指导.研究表明,通过优化催化剂种类、反应条件以及提取方法,可以有效提高微藻脂质的转化效率和生物油品质.同时,本文也指出了当前微藻脂质生产中面临的挑战,如微藻栽培和生长条件优化、高效转化技术的开发等.随着可持续能源日益受到重视,微藻脂质作为一种可再生能源具有巨大的发展潜力.未来研究应进一步关注微藻的规模化栽培、生长条件优化以及高效转化技术的研发,以提高微藻脂质的产量和品质.同时,应进一步推动和实现微藻生物燃料的实际应用,从而为应对气候变化和能源危机提供有效的解决方案.

关键词：微藻脂质提取酯交换催化酶催化原位技术

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An Advanced Dynamic Scheduling for Achieving Optimal resource Allocation

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Computer Systems Science & Engineering 2023年第1期44卷 281-295页

作者： r.Prabhu S.rajesh Department of Computer Science and Engineering AAA College of Engineering and TechnologySivakasiTamilnaduIndia Department of Information Technology Mepco Schlenk Engineering College SivakasiTamilnadu India

Cloud computing distributes task-parallel among the various *** with self-service supported and on-demand service have rapid *** these applications,cloud computing allocates the resources dynami-cally via the internet according to user *** resource allocation is vital for fulfilling user *** contrast,improper resource allocations result to load imbalance,which leads to severe service *** cloud resources implement internet-connected devices using the protocols for storing,communi-cating,and *** extensive needs and lack of optimal resource allo-cating scheme make cloud computing more *** paper proposes an NMDS(Network Manager based Dynamic Scheduling)for achieving a prominent resource allocation scheme for the *** proposed system mainly focuses on dimensionality problems,where the conventional methods fail to address *** proposed system introduced three–threshold mode of task based on its size STT,MTT,LTT(small,medium,large task thresholding).Along with it,task mer-ging enables minimum energy consumption and response *** proposed NMDS is compared with the existing Energy-efficient Dynamic Scheduling scheme(EDS)and Decentralized Virtual Machine Migration(DVM).With a Network Manager-based Dynamic Scheduling,the proposed model achieves excellence in resource allocation compared to the other existing *** obtained results shows the proposed system effectively allocate the resources and achieves about 94%of energy efficient than the other *** evaluation metrics taken for comparison are energy consumption,mean response time,percentage of resource utilization,and migration.

关键词： Cloud computing resource allocation load balance dynamic scheduling dimensionality reduction

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NiCo_2O_4 Nano-/Microstructures as High-Performance Biosensors: A review

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Nano-Micro Letters 2020年第9期12卷 258-309页

作者： rajesh Kumar Department of Chemistry Jagdish Chandra DAV College Dasuya Distt. Hoshiarpur 144205 Punjab India

Non-enzymatic biosensors based on mixed transition metal oxides are deemed as the most promising devices due to their high sensitivity,selectivity,wide concentration range,low detection limits,and excellent *** NiCo2O4 mixed oxides have drawn considerable attention recently due to their outstanding advantages including large specific surface area,high permeability,short electron,and ion diffusion *** of the rapid development of non-enzyme biosensors,the current state of methods for synthesis of pure and composite/hybrid NiCo2P4 materials and their subsequent electrochemical biosensing applications are systematically and comprehensively reviewed *** analysis reveals better electrochemical sensing of bioanalytes by one-dimensional and two-dimensional NiCo2O4 nano-/microstructures than other *** biosensing efficiency of NiCo2O4 as compared to corresponding individual metal oxides,*** and Co3O4,is attributed to the close intrinsic-state redox couples of Ni3+/Ni2+(0.58 V/0.49 V) and Co3+/Co2+(0.53 V/0.51 V).Biosensing performance of NiCo2O4 is also significantly improved by making the composites of NiCo2O4 with conducting carbonaceous materials like graphene,reduced graphene oxide,carbon nanotubes(single and multi-walled),carbon nanofibers;conducting polymers like polypyrrole(PPy),polyaniline(PANI);metal oxides NiO,Co3O4,SnO2,MnO2;and metals like Au,Pd,*** factors affecting the morphologies and biosensing parameters of the nano-/microstructured NiCo2O4 are also ***,some drawbacks and future perspectives related to this promising field are outlined.

关键词： Nano-/micro-structured Spinel NiCo2O4 Synthetic methods Modified electrodes Electrochemical biosensors

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role of inter-particle collision on solids acceleration in riser

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Particuology 2010年第1期8卷 13-18页

作者： rajesh Patel Department of Mechanical Engineering New Jersey Institute of Technology

Collision among particles plays a significant role in governing the structure of gas-solids flow in a riser, especially in the dense and acceleration region. The inter-particle collision is the major cause not only for the kinetic energy dissipation （in terms of additional pressure drop beyond the solids hold-up） but also for the control of solids acceleration （in terms of a balancing force to prevent a free acceleration of solids）. A neglect of the balancing force of inter-particle collision against the hydrodynamic force in the solids momentum equation would simply overestimate the solids acceleration or concentration while underestimate the axial gradient of pressure along the riser by a large margin, typically by up to two orders of magnitude. This paper aims to illustrate the importance of the collision on the characteristic of the gas-solids riser flow. Our analysis shows that the collision force should be of the same order of magnitude as that of the drag force in the dense and acceleration region, which can be far beyond that of gravitational force on solids. A simple formulation of the collision force is therefore proposed to bear a similar format of drag force, with regard to the dependence upon local solids *** the inclusion of the proposed correlation of collision force in the solids momentum equation, our model would be able to yield reasonable phase distributions of gas-solid flows, which can be validated, in a bulk range, against available measurements of solids volume fraction and axial gradient of pressure.

关键词： Gas-solids flow Fluidization Solid acceleration Energy dissipation

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Transition from radiatively inefficient to cooling dominated phase in two temperature accretion disks around black holes

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research in Astronomy and Astrophysics 2009年第12期9卷 1331-1342页

作者： Monika Sinha S.r.rajesh Banibrata Mukhopadhyay Astronomy and Astrophysics Program Department of PhysicsIndian Institute of Science

We investigate the transition of a radiatively inefficient phase of a viscous two temperature accreting flow to a cooling dominated phase and vice versa around black holes. Based on a global sub-Keplerian accretion disk model in steady state, including explicit cooling processes self-consistently, we show that general advective accretion flow passes through various phases during its infall towards a black hole. Bremsstrahlung, syn- chrotron and inverse Comptonization of soft photons are considered as possible cooling mechanisms. Hence the flow governs a much lower electron temperature ～10^8 - 10^9.5 K compared to the hot protons of temperature ～10^10.2 - 10^11.8 K in the range of the accretion rate in Eddington units 0.01≤M≤ 100. Therefore, the solutions may potentially explain the hard X-rays and the γ-rays emitted from AGNs and X-ray binaries. We finally compare the solutions for two different regimes of viscosity and conclude that a weakly viscous flow is expected to be cooling dominated compared to its highly viscous counterpart which is radiatively inefficient. The flow is successfully able to reproduce the observed luminosities of the under-fed AGNs and quasars （e.g. Sgr A＊）, ultra-luminous X-ray sources （e.g. SS433）, as well as the highly luminous AGNs and ultra-luminous quasars （e.g. PKS 0743-67） at different combinations of the mass accretion rate and ratio of specific heats.

关键词： accretion accretion disk -- black hole physics -- hydrodynamics -- radia-tive transfer

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Potential application of graphene oxide and Aspergillus niger spores with high adsorption capacity for recovery of europium from red phosphor,compact fluorescent lamp and simulated radioactive waste

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Journal of rare Earths 2023年第1期41卷 157-166页

作者： B.Arunraj Vidya rajesh N.rajesh Department of Chemistry Birla Institute of Technology and Science-PilaniHyderabad CampusShameerpetHyderabad 500078India Department of Biological Sciences Birla Insttute of Technology and Science-PilaniHyderabad CampusShameerpetHyderabad 500078India

The recovery of rare earth elements(rEEs) is a global challenge and the mining of rare earths has serious environmental implications due to the toxic waste released post ***,the rising demand for rare earths and their far reaching electronic applications necessitates an effective strategy to recover the rEEs from more viable *** this work,the graphene oxide-Aspergillus niger spores(*** spores) blend was utilized for adsorptive recovery of a precious rare earth Eu(Ⅲ) and the adsorption variables like pH of the medium,adsorbent dosage,sorption kinetics,thermodynamics,and isotherm were optimized for the developed bioso *** adsorption process suits the Langmuir isotherm model with a maximum adsorption capacity of 147.3 mg/*** pseudo-second-order kinetics is a perfect fit to describe the adsorption *** results obtained through the Van’t Hoff plot show negative free energy change(ΔG^(0)) which implies the spontaneity of the adsorption *** negative standard enthalpy change(ΔH^(0)) values show that the nature of the adsorption process is *** analytical characterizations including Fourier transform infrared spectroscopy(FTIr),raman,X-ray diffraction(XrD),X-ray photoelectron spectroscopy(XPS),Brunauer-Emmett-Teller(BET),thermal gravimetric analysis(TGA),and scanning electron microscopy-energy dispersive X-ray spectroscopy(SEM-EDX) were employed to study the *** features of *** spores biosorbent were applied to recover Eu(Ⅲ) from real samples such as fluorescent lamp phosphor,red phosphor powder,and a simulated radioactive waste solution.

关键词： Europium Graphene oxide Aspergillus niger Phosphor radioactive waste rare earths

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A review on the current research on microwave processing techniques applied to graphene-based supercapacitor electrodes:An emerging approach beyond conventional heating

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Journal of Energy Chemistry 2022年第11期31卷 252-282,I0008页

作者： rajesh Kumar Sumanta Sahoo Ednan Joanni rajesh Kumar Singh Department of Mechanical Engineering Indian Institute of TechnologyKanpur 208016Uttar PradeshIndia School of Chemical Engineering Yeungnam UniversityGyeongsanGyeongbuk 38541Republic of Korea Centre for Information Technology renato Archer(CTI) Campinas 13069-901Brazil School of Physical and Material Sciences Central University of Himachal Pradesh(CUHP)KangraDharamshala 176215HPIndia

The various methods for microwave processing of materials exhibit numerous advantages,such as short processing times,high yield,expanded reaction conditions,high reproducibility,and high purity of ***-assisted synthesis strategies have been widely adopted for the preparation of highperformance graphene-based materials for supercapacitor *** oxides,mixed metal oxides,metal hydroxides,layered double hydroxides,carbon nanotubes and conducting polymers are some of the main materials which have been added to graphene derivatives for advanced composite/hybrid *** review article first provides a brief introduction and an overview of microwave heating and its advantages for processing graphene-based electrode *** that,a systematic survey of recently published research on microwave irradiation-assisted processing is presented,focusing on:(i)transformation of graphite/graphite oxide into graphene/graphene oxide by exfoliation and reduction;(ii)formation of graphene derivatives in various liquid and gaseous media;(iii)modification of graphene derivatives with various metal oxides/hydroxides,carbon nanotubes,and conducting polymers for use in *** challenges and future perspectives for microwave-assisted processing of graphene-based materials for cutting-edge supercapacitor electrode applications are also summarized in the conclusion.

关键词： Microwave irradiation Graphene derivatives reduction/Exfoliation Supercapacitor Energy

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