检索结果-南通市图书馆

Use of waste plastic oil as a fuel in reactivity-controlled compression ignition engines: a bibliometric investigation from 2017-23

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CLEAN ENErGY 2024年第3期8卷 206-222页

作者： Kanchan, sumit Sandhu, Sarbjot Singh Dr Br Ambedkar Natl Inst Technol Dept Mech Engn Jalandhar Punjab India Lovely Profess Univ Sch Mech Engn Jalandhar Punjab India

Waste plastic oil, generated through the pyrolysis of plastic without oxygen, known as plastic-to-fuel conversion, stands as a promising alternative fuel. This research employs bibliometric analysis, a quantitative method, to comprehensively assess publications in the domain of waste plastic oil integration within reactivity-controlled compression ignition engines. Utilizing Scopus as the primary repository post-2017, the study categorizes information into pivotal aspects, including influential journals, countries, authors, affiliations, document types, thematic areas, sponsors and keywords. The analysis reveals significant contributions from diverse nations, prominently India, China, Turkey and Malaysia. Noteworthy is the prevalence of Energy, Engineering and Chemical Engineering as thematic focal points, with the journal Fuel leading the count followed by the journal Energy emerging as a prominent conduit. Institutional contributions are prolific, led by Gandhi Institute of Technology and Management University and Vellore Institute of Technology. renowned authors 'Gugulothu S.K' and 'He Z' play a pivotal role in shaping the discourse. The National Natural Science Foundation of China stands out as a primary patron. This bibliometric analysis provides a structured understanding of waste plastic oil integration in reactivity-controlled compression ignition engines, laying the groundwork for future research avenues. The study identifies potential research platforms beyond Scopus, including Web of Science, Crossref, Science Direct and Google Scholar, as valuable repositories for further exploration. Moreover, after careful observation of the research articles published by the top 10 authors as found in the study, it was found that the authors share a few common characteristics that helped them in advancing the understanding and application of waste plastic oil in reactivity-controlled compression ignition engines. These are also summarized in the present study with sup

关键词： bibliometric analysis plastic-to-fuel waste plastic oil rCCI engine Scopus database DIESEL-ENGINE CATALYTIC PYrOLYSIS EMISSION CHArACTErISTICS COMBUSTION CHArACTErISTICS INJECTION PArAMETErS PErFOrMANCE BLENDS IMPACT BIODIESEL PrODUCTS

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SArS-CoV-2 spike protein-ACE2 interaction increases carbohydrate sulfotransferases and reduces N-acetylgalactosamine-4-sulfatase by p38 MAPK

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Signal Transduction and Targeted Therapy 2024年第3期9卷 1174-1185页

作者： sumit Bhattacharyya Joanne K.Tobacman Jesse Brown VA Medical Center and University of Illinois at Chicago ChicagoIL 60612USA

Immunostaining in lungs of patients who died with CovID-19 infection showed increased intensity and distribution of chondroitin sulfate and decline in N-acetylgalactostamine-4-sulfatase(Arylsulfatase B;ArSB).To explain these findings,human small airway epithelial cells were exposed to the SArS-CoV-2 spike protein receptor binding domain(SPrBD)and transcriptional mechanisms were ***-p38 MAPK and phospho-SMAD3 increased following exposure to the SPrBD,and their inhibition suppressed the promoter activation of the carbohydrate sulfotransferases CHST15 and CHST11,which contributed to chondroitin sulfate *** in ArSB was mediated by phospho-38 MAPK-induced N-terminal rb phosphorylation and an associated increase in rb-E2F1 binding and decline in E2F1 binding to the ArSB *** increases in chondroitin sulfotransferases were inhibited when treated with phospho-p38-MAPK inhibitors,SMAD3(SIS3)inhibitors,as well as antihistamine desloratadine and antibiotic *** the mouse model of carrageenan-induced systemic inflammation,increases in phosphop38 MAPK and expression of CHST15 and CHST11 and declines in DNA-E2F binding and ArSB expression occurred in the lung,similar to theobserved effects in this SPrBD model of COVID-19 *** accumulation of chondroitin sulfates is associated with fibrotic lung conditions and diffuse alveolar damage,increased attention to p38-MAPK inhibition may be beneficial in amelioratingCovid-19infections.

关键词： ACE2 lung inhibited

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2型糖尿病成年患者的降压治疗糖尿病患者需要更好地控制血压,而非一味争论不同药物的优劣

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英国医学杂志中文版 2016年第9期19卷 483-484页

作者： sumit r majumdar 沈赟(译) 包玉倩(校) Department of Medicine University of AlbertaEdmontonAlbertaCanada T6G 2G3 上海交通大学附属第六人民医院内分泌代谢科

2型糖尿病(以下简称糖尿病)和高血压从临床、病理生理以及流行病学角度来讲,都是紧密相关的。约50%~60%的成年糖尿病患者患有高血压,但在同时患有两种疾病的患者中仅有一半血压控制良好。

关键词： 2型糖尿病流行病学降压治疗病理生理血压控制高血压控制血压成年患者

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Investigation of performance and emission characteristics using ethanol-blended gasoline fuel as a flex-fuel in two-wheeler vehicle mounted on a chassis dynamometer

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CLEAN ENErGY 2024年第3期8卷 174-193页

作者： Gupta, Sourabh Kanchan, sumit Kaur, rupinder Sandhu, Sarbjot Singh Lovely Profess Univ Sch Mech Engn Phagwara Punjab India Lovely Profess Univ Div Innovat & Entrepreneurship Phagwara Punjab India Dr Br Ambedkar Natl Inst Technol Dept Mech Engn Jalandhar India

This study investigated the performance and emissions of flex fuels in a 110-cc BS6-compliant fuel-injected two-wheeler without ethanol adaptation adjustments. The tests were carried out under controlled conditions on a chassis dynamometer at 1000, 2000 and 3000 r.p.m. using ethanol blends from 10% ethanol (E10) to 85% ethanol (E85). Parameters examined included brake power (BP) output, brake-specific fuel consumption (BSFC), peak in-cylinder pressure and exhaust temperature. Emissions, including carbon monoxide (CO), hydrocarbons (HC), nitrogen oxide (NOx) and unregulated emissions, were also assessed. As the percentages of the ethanol blend increased from E10 to E85, there was a noticeable improvement in power output. At 1000 r.p.m., the BP ranged from 2.4 to 4.6 kW for different blends. The BSFC and the peak in-cylinder pressure followed a similar pattern, indicating enhanced performance and fuel efficiency with higher ethanol concentrations. Interestingly, using E85 at 1000 r.p.m. resulted in a significant 41.08% reduction in exhaust temperature compared with E10, although this difference decreased with higher blend percentages. Furthermore, replacing E10 with E85 at 1000 r.p.m. reduced CO and HC emissions by 9.17% and 38.34%, respectively. In contrast, NOx emissions increased at all r.p.m. levels with higher-ethanol blends, peaking at a 415 parts per million increase at 3000 r.p.m. However, unregulated emissions decreased significantly with increased r.p.m. and ethanol content. In summary, the use of flex-fuel blends in a two-wheeler resulted in a modest increase in BP output, improved fuel efficiency and lower CO and HC emissions. These findings are vital for optimizing ethanol blend utilization in two-wheeler engines under low-load conditions, considering both performance and environmental aspects. The performance and emissions of flex fuels in a 110-cc BS6-compliant fuel-injected two-wheeler are reported under controlled conditions on a chassis dynamometer a

关键词： flex fuel ethanol regulated emissions unregulated emissions chassis dynamometer performance characteristics EXHAUST-GAS rECIrCULATION ENGINE IMPACT ENErGY METHANOL

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Appraisal of pollution and health risks associated with coal mine contaminated soil using multimodal statistical and Fuzzy-TOPSIS approaches

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Frontiers of Environmental Science & Engineering 2024年第5期18卷 101-115页

作者： sumit Kumar Sonali Banerjee Saibal Ghosh Santanu Majumder Jajati Mandal Pankaj Kumar roy Pradip Bhattacharyya Agricultural and Ecological research Unit Indian Statistical InstituteGiridih815301India Department of Life and Environmental Sciences Bournemouth University(Talbot Campus)Fern BarrowPooleBH12 5BBUK School of Sciences Engineering & EnvironmentUniversity of SalfordSalfordM5 4QJUK School of Water resource Engineering Jadavpur UniversityKolkata700032India School of Environmental Studies Jadavpur UniversityKolkata700032India

The present study assesses the concentration,probabilistic risk,source classification,and dietary risk arising from heavy metal(HMs)pollution in agricultural soils affected by coal mining in eastern part of *** of soil and rice plant indicated significantly elevated levels of HMs beyond the permissible limit in the contaminated zones(zone 1:PbSoil:108.24±72.97,CuSoil:57.26±23.91,CdSoil:8.44±2.76,CrSoil:180.05±46.90,NiSoil:70.79±25.06 mg/kg;PbGrain:0.96±0.8,CuGrain:8.6±5.1,CdGrain:0.65±0.42,CrGrain:4.78±1.89,NiGrain:11.74±4.38 mg/*** 2:PbSoil:139.56±69.46,CuSoil:69.89±19.86,CdSoil:8.95±2.57,CrSoil:245.46±70.66,NiSoil:95.46±22.89 mg/kg;PbGrain:1.27±0.84,CuGrain:7.9±4.57,CdGrain:0.76±0.43,CrGrain:8.6±1.58,NiGrain:11.50±2.46 mg/kg)compared to the uncontaminated zone(zone 3).Carcinogenic and non-carcinogenic health risks were computed based on the HMs concentration in the soil and rice grain,with Pb,Cr,and Ni identified as posing a high risk to human *** Carlo simulation,the solubility-free ion activity model(FIAM),and severity adjusted margin of exposure(SAMOE)were employed to predict health *** hazard quotient(HQ)values for Ni,Cr,Cd,and Pb were>1,indicating a significant non-carcinogenic ***(risk thermometer)results for contaminated zones ranged from low to moderate risk(CrSAMOE:0.05,and NiSAMOE:0.03).Fuzzy-TOPSIS and variable importance plots(from random forest)showed that Ni and Cr were mostly responsible for the toxicity in the rice plant,respectively.A self-organizing map for source classification revealed common origin for the studied HMs with zone 2 exhibiting the highest *** positive matrix factorization model for the source apportionment identified coal mining and transportation as the predominant sources of *** distribution analysis indicated higher contamination near mining sites as compared to distant sampling ***,this study will aid environmental scientists and policymakers controllin

关键词： Coal mine Free ion activity model Monto Carlo Simulation Pollution and Health risk Fuzzy-TOPSIS

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安全使用含浓缩钾药物的最佳实践

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英国医学杂志中文版 2006年第2期9卷 104-107页

作者： Michelle Tubman sumit r majumdar Daniel Lee Carol Friesen Terry P Klassen 刘威（译）张云鹏（译）王琳（校） Alberta research Centre for Child Health Evidence Room 9419 4th Floor Aberhart Centre One 11402 University Avenue Edmonton Alberta Canada T6G 2J3 Department of Medicine 2E3.07 Walter C Mackenzie Health Sciences Centre University of Alberta Edmonton Alberta Canada T6G 2B7 不详

改善患者安全性的建议往往是在实践指南及很多专家或机构的建议基础上提出的, 但并未得到证实,尤其是那些有关如何使用含钾药品安全性方面的建议即使是目前已得到广泛认可的含钾溶液安全使用常规,也缺乏表示支持或否定的确凿证据或经验... 详细信息

改善患者安全性的建议往往是在实践指南及很多专家或机构的建议基础上提出的, 但并未得到证实,尤其是那些有关如何使用含钾药品安全性方面的建议即使是目前已得到广泛认可的含钾溶液安全使用常规,也缺乏表示支持或否定的确凿证据或经验性证据当务之急是开展医疗卫生系统整体评估医疗保健系统的研究。

关键词：药品安全性药物医疗保健系统医疗卫生系统实践指南使用常规用药规范循证医学

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Angular unconformity in Pennsylvanian strata from 3-D seismic interpretation,Goldsmith Field,West Texas

Energy Geoscience

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Energy Geoscience 2024年第2期5卷 298-303页

作者： Edwin I.Egbobawaye Nelly Omoruyi Abdulmutallib Aminu robert Trentham Mohamed K.Zobaa sumit Verma Kinder Morgan MidlandTX79705USA Department of Geosciences University of Texas Permian BasinOdessaTX79762USA

The Pennsylvanian unconformity,which is a detrital surface,separates the beds of the Permian-aged strata from the Lower Paleozoic in the Central Basin *** data interpretation indicates that the unconformity is an angular unconformity,overlying multiple normal faults,and accompanied with a thrust fault which maximizes the region's structural ***,the Pennsylvanian angular unconformity creates pinch-outs between the beds above and *** computed the spectral decomposition and reflector convergence attributes and analyzed them to characterize the angular unconformity and *** spectral decomposition attribute divides the broadband seismic data into different spectral bands to resolve thin beds and show thickness *** contrast,the reflector convergence attribute highlights the location and direction of the pinch-outs as they dip south at angles between 2° and 6°.After reviewing findings from rGB blending of the spectrally decomposed frequencies along the Pennsylvanian unconformity,we observed channel-like features and multiple linear bands in addition to the faults and *** can be inferred that the identified linear bands could be the result of different lithologies associated with the tilting of the beds,and the faults may possibly influence hydrocarbon migration or act as a flow barrier to entrap hydrocarbon *** identification of this angular unconformity and the associated features in the study area are vital for the following reasons:1)the unconformity surface represents a natural stratigraphic boundary;2)the stratigraphic pinch-outs act as fluid flow connectivity boundaries;3)the areal extent of compartmentalized reservoirs'boundaries created by the angular unconformity are better defined;and 4)fault displacements are better understood when planning well locations as faults can be flow barriers,or permeability conduits,depending on facies heterogeneity and/or seal effectiveness of a fault,which

关键词： Pennsylvanian unconformity Seismic data interpretation Spectral decomposition reflector convergence reservoir characterization

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Geochemistry and mineralogy of beach sediments in the northern Gulf of Mexico,Tamaulipas state,Mexico:implication for provenance

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Journal of Palaeogeography 2024年第3期13卷 375-400页

作者： Mayank Shukla Sanjeet K.Verma Mayla A.ramos-Vázquez John S.Armstrong-Altrin Karla r.Hernández-Martínez sumit Mishra Vivek P.Malviya Héctor Hernández-Mendoza Posgrado de la Division de Geociencias Aplicadas Instituto Potosino de Investigacion Científica y Tecnologica(IPICYT)Camino a la Presa San José2055San Luis Potosí78216Mexico Division de Geociencias Aplicadas Instituto Potosino de Investigación Científica y Tecnologica(IPICYT)Camino a la Presa San Jose 2055San Luis Potosí78216Mexico Universidad Nacional Autonoma de México Instituto de Ciencias del Mar y LimnologíaUnidad de ProcesosOceanicos y CosterosCiudad UniversitariaCiudad de México 04510Mexico Department of Marine Sciences Bharathidasan UniversityTiruchirappalli620024Tamil NaduIndia Instituto de Geociencias Universidad Nacional Autonoma de MéxicoBoulevard Juriquilla 300176230JuriquillaQueretaroMexico Department of Applied Geology Dr.Harisingh Gour Central UniversitySagar470002Madhya PradeshIndia Instituto de Investigacion de Zonas Desérticas Universidad Autònoma de San Luis PotosíAltair 200CP 78377San LuisS.L.P.Mexico Universidad del Centro de Mexico Capitán Caldera 75CP 78250San LuisS.L.P.Mexico

Geochemical and mineralogical studies were performed in the La Pesca(LP)and Tesoro Altamira(TA)beach sediments,located in the Tamaulipas state,northern Gulf of *** main aim of this study is to infer the weathering history and provenance and to discriminate the tectonic environment of the beach *** sediments are composed of quartz with small amounts of accessory minerals such as plagioclase,calcite,orthoclase,microcline,and *** beach sediments are classified as fine-grained and very well sorted,however LP has coarse skewed and leptokurtic sediments,whereas TA has fine-skewed and very leptokurtic *** chemical index of weathering(CIW’)indicates intense weathering in the source *** quartz grain microtextures in the LP and TA are classified into mechanical,chemical,and mechanical/chemical *** features such as fractures,pits,percussion marks,abrasion fatigue,and V-shaped marks favor high-energy littoral,fluvial,subaqueous-marine,and aeolian *** chemical features indicate solution pits and crystalline overgrowth,which suggests a silica saturated marine *** mechanical/chemical features display adhering particles and elongated depressions suggest formation in a sub-aqueous nearshore marine *** and trace elements-based provenance discrimination diagrams indicate a felsic source derived from the Mesa Central(MC),Sierra Madre Oriental(SMOr)and Oaxaquia *** major and trace element concentrations imply a passive margin setting for the northern Gulf of Mexico,which is consistent with the general geology.

关键词： Beach sediments Geochemistry Mineralogy Provenance Tamaulipas Tectonic setting

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踝-臂血压指数预测非心脏手术后发生心脏并发症的风险

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麻醉与镇痛 2009年第4期5卷 52-58页

作者： Bruce W. Fisher Gillian ramsay sumit r. majumdar Chantelle T. Hrazdil Barry A. Finegan rajdeep S. Padwal Finlay A. McMister 姚刚(译) 喻田(校) Division of General Internal Medicine University of Alberta Edmonton Canada Department of Anaesthesiology and Pain Medicine University of Alberta Edmonton Canada 不详

背景已经证实踝．臂血压指数（AAI）减小有助于诊断外周动脉阻塞性疾病（PAD）进而预测心血管事件的发生。然而，AAI与非心脏手术患者手术后心血管系统并发症之间的关系尚未见有报道。方法我们前瞻性地连续研究了242例50岁及以上拟行择... 详细信息

背景已经证实踝．臂血压指数（AAI）减小有助于诊断外周动脉阻塞性疾病（PAD）进而预测心血管事件的发生。然而，AAI与非心脏手术患者手术后心血管系统并发症之间的关系尚未见有报道。方法我们前瞻性地连续研究了242例50岁及以上拟行择期非心脏手术的大学医院门诊患者。我们通过触诊及多普勒超声技术测定患者的校正心脏危险指数（rCrI）和AAI。有一名不了解患者手术前评估及AAI结果的独立观察者对手术后前7天的心脏并发症进行确证。AAI≤0．9或触摸不到4条动脉脉搏搏动定义为AAI异常。异常的AAI用于预测手术后心血管系统并发症的发生，同时用似然比（Lr）、rOC曲线下面积（AUC）以及多元逻辑回归来校正rCrI。结果受试者的平均年龄为67岁，60％为男性，19％患有糖尿病，14％患有缺血性心脏病以及35％的患者接受开腹或者开胸手术。手术后，242例中有14例（6％）患者发生心脏并发症，但无死亡病例。44例患者出现了异常的AAI，其中10例（23％）手术后发生心脏并发症：阳性Lr4．79（95％可信区间：3．04—7．54），阴性Lr0．34（95％可信区间：0．15—0．77），AUC：0．80。AAI与rCrj相比更具有说服力，rCrI阳性Lr为4．22（95％可信区间：2．24—7．95），阴性Lr为0．57（95％可信区间：0．34。0．96）和AUC=0．74。多因素变量分析，经过rCrI结果校正后，AAI异常的患者发生心脏并发症的校正优势比为10．16（95％可信区间：2．90—36．02）。结论AAI异常地低下是潜在外周动脉阻塞性疾病的诊断指标，同时还是非心脏手术后发生心脏并发症的独立危险因素，并且其准确度和rCrI相似，而且AAI还可以为手术前心脏危险性评估分级提供依据。

关键词：心脏并发症踝-臂血压指数预测非心脏手术后

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Seismic attribute and well-log analysis for channel characterization in the upper San Andres and Grayburg formations of the Midland Basin,Texas

Energy Geoscience

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Energy Geoscience 2024年第2期5卷 263-278页

作者： sumit Verma Esra Yalçın Yılmaz Laura Ortiz Sanguino Justin Yandell Miles A.Henderson robert C.Trentham Department of Geosciences The University of Texas Permian BasinOdessaTXUSA School of Geosciences The University of OklahomaNormanOKUSA

The Permian Basin is one of the most prolific,and currently one of the most active,oil and gas basins in the *** Lower Permian strata in the Permian Basin have produced more than 14 billion barrels of oil(BBO),making it the largest volume of hydrocarbon in the *** in the Midland Basin during late Leonardian through early Guadalupian(ca.272-269 Ma)resulted in progradation of shelf edge and ultimately closure of the basin by Middle Permian *** analyzed a merged seismic survey covering parts of the Permian Basin(i.e.,Central Basin Platform and Midland Basin)in Andrews,Ector,and Midland Counties,*** seismic survey and well logs show the presence of gently dipping(ca.1°)clinoforms in the Upper San Andres and Grayburg Formations on the eastern edge of the Central Basin Platform and western Midland *** seismic attributes,curvature,and spectral decomposition identify low sinuosity slope channels oriented north-south,but such channels do not appear beyond the *** shelf edge shifts from north to south during deposition of the Upper San Andres and Grayburg *** identify five basinward shifts noted by the migration of the shelf edge toward the basin center and the presence of channel features along the depositional *** petrophysical analysis indicates that channels cut into carbonate rocks and are filled by siliciclastic sediments;this interpretation is supported by the most negative curvature anomalies along the channel axes caused by the differential compaction between the carbonate and siliciclastic *** are a few channels with a northwest-southeast strike,which matches the direction of the Concho Lineament observed by satellite *** observations are consistent with previous interpretations of the northern Midland Basin closure during Middle-Late Permian time.

关键词： Permian shelf carbonate

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