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Carbon Resources Conversion 2019年第3期2卷 175-181页

作者： atul sharma Akimitsu Matsumura Research Institute of Energy Frontier Non-conventional Carbon Resources GroupNational Institute of Advanced Industrial Science&Technology16-1OnogawaTsukubaJapan

Catalytic coal gasification is an efficient way to achieve high conversion rates at low *** loss due to the reaction between the inherent mineral matter in the coal and the catalyst is a major hurdle for its practical *** problem may be overcome by removing the mineral matter from the coal before *** demineralizing approaches,acid-washing and solvent-extraction methods are investigated for demineralizing the *** analysis,XRD analysis,NMR analysis,and N_(2)adsorption analysis were made to compare the demineralization efficiency,crystallographic carbon microstructure,chemical structure,and micro-porosity,***-extraction method was found be more efficient for *** was observed in the chemical structure and micro-porosity while crystallographic carbon-microstructure was found to be ***-catalytic and catalytic gasification reactivity of the chars obtained by the two methods was *** composition and gas evolution profiles were also obtained and found to be influenced by the degree of demineralization.

关键词： Coal Demineralization Acid washing Solvent extraction Catalytic gasification

Numerical Analysis of Phase Change and Container Materials for Thermal Energy Storage in the Storage Tank of Solar Water Heating System

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Journal of Thermal Science 2024年第2期33卷 408-421页

作者： SINGH Shailendra ANAND Abhishek SHUKLA Amritanshu sharma atul Non-Conventional Energy Laboratory Rajiv Gandhi Institute of Petroleum TechnologyJais Amethi229304India

This study evaluates the effectiveness of phase change materials(PCMs) inside a storage tank of warm water for solar water heating(SWH) system through the theoretical simulation based on the experimental model of *** et *** model is explained by five fundamental equations for the calculation of various parameters like the effectiveness of PCMs,the mass of hot water,total heat content,and duration of *** study simulated eleven PCMs to analyze their effectiveness like Sodium hydrogen phosphate dodecahydrate(SHPD),OM 37,N-Eicosane(NE),Lauric acid(LA),Paraffin wax(PW),OM 48,Paraffin wax C_(20-33)(PW-C20-33),Sodium acetate trihydrate(SAT),Palmitic acid(PA),Myristic acid(MA),and Stearic acid(SA).Among all PCMs,the SHPD has found the highest value of effectiveness factor of ***,it is the most recommended PCM for the storage tank of the SWH *** study also includes the melt fraction analysis of all enumerated PCMs corresponding to container materials of stainless steel,glass,aluminum mixed,tin,aluminum,and *** melt fraction analysis is performed by making a coding program in the FORTRAN programming *** the analysis,copper container material is found to have high melting rate for all PCMs so it is superior to other container materials.

关键词： theoretical model solar water heating system phase change material effectiveness factor melt fraction

Hydrodesulfurization of coal tar pitch using Pt/Al_(2)O_(3)and Pd/Al_(2)O_(3)catalysts under mild conditions

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Carbon Resources Conversion 2019年第3期2卷 213-216页

作者： Kazumasa Yazu atul sharma Research Institute of Energy Frontier National Institute of Advanced Industrial Science and Technology16-1 OnogawaTsukubaIbaraki 305-8569Japan

Hydrodesulfurization(HDS)of coal tar pitch(CTP)using Pt/Al_(2)O_(3)and Pd/Al_(2)O_(3)catalysts in tetrahydrofuran at 333 K and atmospheric pressure was *** HDS of dibenzothiophene(DBT)proceeded over both the Pt and Pd catalysts under the mild *** effects of polycyclic aromatic hydrocarbons on the HDS of DBT were examined:a naphthalene ring suppressed the HDS,while a benzene ring did *** underwent HDS as well as partial hydrogenation under the mild *** Pt catalyst was more active than the Pd catalyst in the HDS of *** sulfur content in CTP was reduced by over 50%through the HDS process.

关键词： Coal tar pitch Hydrodesulfurization Platinum Palladium Mild conditions

An approach for selection of solid waste treatment and disposal methods based on fuzzy analytical hierarchy process

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Waste Disposal and Sustainable Energy 2022年第4期4卷 311-322页

作者： Amarjeet Kumar atul sharma Nekram Rawal Department of Civil Engineering Motilal Nehru National Institute of Technology AllahabadAllahabad211004India

Solid waste management is a severe challenge in India due to massive and rapid growth in waste generation rates,environmental difficulties,and financial constraints for proper *** managed municipal solid waste(MSW)has substantial negative consequences for society,including financial and aesthetic harm,contamination of natural resources,environmental pollution,and severe health *** qualitative and quantitative factors are required to select the appropriate solid waste treatment and disposal ***-Criteria decision-making tools helped in analyzing solid waste in terms of qualitative and quantitative *** this paper,seven criteria and their sub-criteria are selected for ranking solid waste treatment and disposal technology using fuzzy-analytic hierarchy *** results showed that composting is the most suitable option for solid waste treatment and disposal technology,followed by refuse-derived *** incineration and sanitary landfills are the least preferred MSW management *** sensitivity analysis reveals a high consistency,robustness,and stability level.

关键词： Fuzzy-analytic hierarchy process Solid waste management Composting Refuse-derived fuel Incineration

Effect of binder amount on the development of coal-binder interface and its relationship with the strength of the carbonized coal-binder composite

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Carbon Resources Conversion 2018年第2期1卷 139-146页

作者： atul sharma Naoto Sakimoto Toshimasa Takanohashi Research Institute of Energy Frontier Non-conventional Carbon Resources GroupNational Institute of Advanced Industrial Science&Technology16-1OnogawaTsukubaJapan Japan Coal Energy Center 3-2-1 Nishi-shinbashiMinato-kuTokyoJapan

Production of high-strength carbonized coal composites from non-caking coals only with possible application as coke is presented.A binder and a non-caking coal were mixed in different ratios and carbonized at 1000C to produce coal-binder *** binders,one from coal origin and other from oil origin were *** of coal-binder mixing ratio and base coal particle size on the fracture strength of composites was *** of binder with the coal particles at coal-binder interface and development of connected carbon matrix were primarily responsible for the strength of the carbonized coal *** trend of change in fracture strength as a function of coal-binder fraction was similar for both the ***,for same coal-binder mixing ratio,binder type strongly affected the maximum strength *** strength was found to be primarily dependent on the coal-binder mixing ratio and base coal particle *** main finding of this study is that the irrespective of binder type,for a given base coal particle size there was only one coal-binder mixing ratio at which the maximum strength was *** binder fraction at which the highest strength observed was correlated to the carbon matrix connectivity index.

关键词： Carbonized coalcomposite Cokes Non-caking coals Binder

Experimental investigation into transient pressure pulses during pneumatic conveying of fine powders using Shannon entropy

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Particuology 2016年第6期14卷 143-153页

作者： Amit Goel Anu Mittal S.S. Mallick atul sharma Department of Mechanical Engineering Thapar University Patiala Punjab 147004 India

This paper presents the results of an ongoing investigation into transient pressure pulses using Shan- non entropy. Pressure fluctuations （produced by gas-solid two-phase flow during fluidized dense-phase conveying） are recorded by pressure transducers installed at strategic locations along a pipeline. This work validates previous work on identifying the flow mode from pressure signals （Mittal, Mallick, ＆ Wypych, 2014）. Two different powders, namely fly ash （median particle diameter 45 μm, particle den- sity 1950 kg/m3. loosely poured bulk density 950 kg/m3） and cement （median particle diameter 15 p,m, particle density 3060 kg/m3, loosely poured bulk density 1070 kg/m3）, are conveyed through different pipelines （51 mm I.D. × 70 m length and 63 mm I.D. × 24 m length）. The transient nature of pressure fluc- tuations （instead of steady-state behavior） is considered in investigating flow characteristics. Shannon entropy is found to increase along straight pipe sections for both solids and both pipelines. However, Shannon entropy decreases after a bend. A comparison of Shannon entropy among different ranges of superficial air velocity reveals that high Shannon entropy corresponds to very low velocities （i.e. 3-5 m/s） and very high velocities （i.e. 11-14 m/s） while low Shannon entropy corresponds to mid-range velocities （i.e. 6-8 m/s）.

关键词： Transient pressure fluctuations Fluidized dense phase Shannon entropy Flow pattern Solid loading ratio Superficial air velocity

Energy loss at bends in the pneumatic conveying of fly ash

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Particuology 2015年第4期13卷 65-73页

作者： Naveen Tripathi atul sharma S.S.Mallick P.W.Wypych Department of Mechanical Engineering Thapar University Faculty of Engineering and Information Sciences University of Wollongong

An accurate estimation of the total pressure drop of a pipeline is important to the reliable design of a pneumatic conveying system. The present paper presents results from an investigation into the modelling of the pressure drop at a bend in the pneumatic conveying of fly ash. Seven existing bend models were used （in conjunction with solids friction models for horizontal and vertical straight pipes, and initial acceleration losses） to predict the total pipeline pressure drop in conveying fly ash （median particle diameter： 30 }zm; particle density： 2300 kg/m^3; loose-poured bulk density： 700 kg/m3） in three test rigs （pipelines with dimensions of 69 mm inner diameter （I.D.） × 168 m length; 105 mm I.D. × 168 m length; 69 mm I.D. × 554 m length）. A comparison of the pneumatic conveying characteristics （PCC） predicted using the seven bend models and experimental results shows that the predicted total pipeline PCC and trends depend on the choice of bend model. While some models predict trends that agree with the experimental results, other models predicted greater bend pressure drops for the dense phase of fly ash than for the dilute phase. Models of Pan, R. （1992）. Improving scale-up procedures for the design of pneumatic conveying systems. Doctoral dissertation, University of Wollongong, Australia, Pan, R., ＆ Wypych, P.W. （1998）. Dilute and dense phase pneumatic conveying of fly ash. In Proceedings of the sixth International Conference on Bulk Materials Storage and Transportation （pp. 183-189）, Wollongong, NSW, Australia and Chambers, A.J., ＆ Marcus, R.D. （1986）. Pneumatic conveying calculations. In Proceedings of the second International Conference on Bulk Materials Storage and Transportation （pp. 49-52）, Wollongong, Australia reliably predicted the bend losses for systems conveying fly ash over a large range of air flows.

关键词： Pneumatic conveying Fluidised dense phase Bend Pressure drop Bend model

Reducing shoulder dislocation without anaesthesia or assistant:Validation of a new reduction manoeuvre

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Chinese Journal of Traumatology 2019年第5期22卷 274-277页

作者： Rashid Anjum Subodh Pathak atul Rai sharma Jatin Aggarwal Aryan sharma Vineet Pruthi Anil Kumar Chaudhary MM Institute of Medical Sciences&Research Ambala13320乙India

Purpose:Shoulder dislocation comprises 60%of all major joint dislocations worldwide and a number of reduction techniques are described in the literature w让h varying degrees of *** description of a large number of techniques speaks for itself that no method is effective all the times and one should be acquainted with more than one *** ideal method of reduction should be simple,easily reproducible,relatively painless that can be performed unassisted without sedation or anaesthesia w让h minimal or no further *** report our results of using a novel method of anterior shoulder reduction described recently in the literature that claims to fulfil most of the characteristics of an ideal method if not ***:This prospective study was conducted in a tertiary care *** the cases of primary anterior shoulder dislocation presenting within three days of injury without any associated fracture or spine trauma with or without greater tuberosity fracture were *** reduction was done using a novel method by orthopaedic residents in all *** need for a second reduction attempt or anaesthesia was considered a treatment *** taken for reduction,pain felt during reduction and complications if any were ***:There were 47(77.04%)males and 14(22.95%)females with a mean age of(37.04±12.63)*** new technique was effective in locating a shoulder dislocation on the first attempt in 58 of the 61 dislocated shoulders(95.08%).The remaining three shoulders were reduced on second attempt by the same ***,pre-medication or anaesthesia was not used in any *** average time taken for the shoulder reductio n was(130.5±25.8)sec onds and con fide nee interval(95%)124-137 *** complications were not seen in any of the ***:This relatively painless technique of shoulder reduction is easy to acquire and practice in emergency *** advantages of this manoeuvre and its associated safety

关键词： Shoulder dislocation External rotation manoeuvre Prakash's manoeuvre

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Cytokine- and chemokine-induced inflammatory colorectal tumor microenvironment: Emerging avenue for targeted therapy

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Cancer Communications 2022年第8期42卷 689-715页

作者： Ajaz A.Bhat Sabah Nisar Mayank Singh Bazella Ashraf Tariq Masoodi Chandra P.Prasad atul sharma Selma Maacha Thasni Karedath Sheema Hashem Syed Besina Yasin Puneet Bagga Ravinder Reddy Michael P.Frennaux Shahab Uddin Punita Dhawan Mohammad Haris Muzafar A.Macha Laboratory of Molecular and Metabolic Imaging Cancer Research DepartmentSidra MedicineDoha 26999Qatar Department of Medical Oncology Dr.B.R.Ambedkar Institute Rotary Cancer HospitalAll India Institute of Medical Sciences(AIIMS)New Delhi 110029India Department of Biotechnology School of Life SciencesCentral University of KashmirGanderbalJammu&Kashmir 191201India Division of Translational Medicine Research BranchSidra MedicineDoha 26999Qatar Genomics Core Facility QBRIQatar FoundationDoha 34110Qatar Department of Pathology Sher-I-Kashmir Institute of Medical SciencesSrinagarJammu&Kashmir 190011India Department of Diagnostic Imaging St.Jude Children’s Research HospitalMemphisTN 38105USA Center for Advanced Metabolic Imaging in Precision Medicine Department of RadiologyPerelman School of Medicine at the University of PennsylvaniaPhiladelphiaPA 19104USA Academic Health System Hamad Medical CorporationDoha 3050Qatar Translational Research Institute Hamad Medical CorporationDoha 3050Qatar Department of Biochemistry and Molecular Biology University of Nebraska Medical CenterOmahaNE 68198USA Laboratory Animal Research Center Qatar UniversityDoha 2713Qatar Watson-Crick Centre for Molecular Medicine Islamic University of Science and TechnologyAwantiporaJammu&Kashmir 192122India

Colorectal cancer(CRC)is a predominant life-threatening cancer,with liver and peritoneal metastases as the primary causes of *** inflammation,a known CRC risk factor,nurtures a local inflammatory environment enriched with tumor cells,endothelial cells,immune cells,cancer-associated fibroblasts,immunosuppressive cells,and secretory growth *** complex interactions of aberrantly expressed cytokines,chemokines,growth factors,and matrix-remodeling enzymes promote CRC pathogenesis and evoke systemic responses that affect disease *** evidence suggests that these cytokines and chemokines play a role in the progression of CRC through immunosuppression and modulation of the tumor microenvironment,which is partly achieved by the recruitment of immunosuppressive *** cells impart features such as cancer stem cell-like properties,drug resistance,invasion,and formation of the premetastatic niche in distant organs,promoting metastasis and aggressive CRC growth.A deeper understanding of the cytokineand chemokine-mediated signaling networks that link tumor progression and metastasis will provide insights into the mechanistic details of disease aggressiveness and facilitate the development of novel therapeutics for ***,we summarized the current knowledge of cytokine-and chemokine-mediated crosstalk in the inflammatory tumor microenvironment,which drives immunosuppression,resistance to therapeutics,and metastasis during CRC *** also outlined the potential of this crosstalk as a novel therapeutic target for *** major cytokine/chemokine pathways involved in cancer immunotherapy are also discussed in this review.

关键词： chemokine colorectal cancer cytokine drug resistance epithelial-mesenchymal transition immunosuppression immunotherapy inflammation metastasis tumor microenvironment

Recovery of the injured neural system through gene delivery to surviving neurons in Parkinson’s disease

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Neural Regeneration Research 2025年第10期20卷 2855-2861页

作者： Chanchal sharma Sehwan Kim Hyemi Eo Sang Ryong Kim School of Life Science Kyungpook National UniversityDaeguKorea BK21 FOUR KNU Creative BioResearch Group Kyungpook National University DaeguKorea Brain Science and Engineering Institute Kyungpook National UniversityDaeguKorea

A critical unaddressed problem in Parkinson’s disease is the lack of therapy that slows or hampers *** medications effectively manage symptoms,they offer no long-term benefit because they fail to address the underlying neuronal *** highlights that the elusive goals of halting progression and restoring damaged neurons limit the long-term impact of current *** clinical trials using gene therapy have demonstrated the safety of various vector delivery systems,dosages,and transgenes expressed in the central nervous system,signifying tangible and substantial progress in applying gene therapy as a promising Parkinson’s disease ***,at diagnosis,many dopamine neurons remain in the substantia nigra,offering a potential window for recovery and *** propose that modulating these surviving dopamine neurons and axons in the substantia nigra and striatum using gene therapy offers a potentially more impactful therapeutic approach for future ***,innovative gene therapies that focus on preserving the remaining elements may have significant potential for enhancing long-term outcomes and the quality of life for patients with Parkinson’s *** this review,we provide a perspective on how gene therapy can protect vulnerable elements in the substantia nigra and striatum,offering a novel approach to addressing Parkinson’s disease at its core.

关键词： adeno-associated virus gene therapy neuroprotection neurorestoration neurotrophic factor nigrostriatal dopamine pathway pro-survival protein