检索结果-南通市图书馆

Diagenesis,facies and palaeocurrent analysis of Upper Rewa Sandstone around Sagar,Central India

Journal of Palaeogeography 2023年第4期12卷 546-563页

作者： gaurav k.singh Ashish k.Rai Arvind k.singh Department of Applied Geology Dr.Harisingh Gour VishwavidyalayaSagar 470003Madhya PradeshIndia Geological Survey of India ShillongIndia

The stratigraphic surface represented by a major contact between the Archean Bundelkhand Granite and the extensive Proterozoic Vindhyan sediments is a regional basement cover *** crystalline—sedimentary interface reflects an intense weathering of continental crust during marine *** time-transgressive sand deposition events ***,Rewa and Bhander are mainly witnessed during the entire Vindhyan ***,the Upper Rewa Sandstone comprises one of these events in the Vindhyan *** progress has been made in interpreting these sandstones as a function of entirely marine process to a combination of tidal—fluvio—eolian *** the results have so far been attained on the basis of sedimentary facies,provenance,palaeocurrent analysis,and some of petrography.A distinct differentiation between marine and fluvial components of the Upper Rewa Sandstone still remains ***,we use diagenesis as a parameter for the first time along with facies and palaeocurrent analysis to acquire a clear comprehension of marine-and fluvial-dominated *** present study spans 27 square kilometer area covering 15 stratigraphic sections with a collection of 571directional data from the facies specific sedimentary structures,and 28 samples obtained for the thin section *** lower unit of the Upper Rewa Sandstone shows facies association typical of tidal environment,along with polymodal *** rocks are well sorted and dominantly lithified by authigenic *** development of a complex of syntaxial,passive pore fills,and grain replacive cements reflect normally pressured nature of the lower unit *** upper unit of the Upper Rewa Sandstone however,reveals a facies pattern resembling fluvial processes and unimodal palaeocurrent *** exhibit poor sorting,siliceous,and ferruginous matrix,and development of intense ***,pressure solution is a dominant mode of l

关键词： Palaeocurrent Diagenesis Facies Upper Rewa Sandstone Vindhyan Basin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Experimental and Finite Element Analysis of Corroded High-Pressure Pipeline Repaired by Laminated Composite

引用

Computer Modeling in Engineering & Sciences 2024年第8期140卷 1783-1806页

作者： Seyed Mohammad Reza Abtahi Saeid Ansari Sadrabadi Gholam Hosein Rahimi gaurav singh Hamid Abyar Daniele Amato Luigi Federico Faculty of Mechanical Engineering Tarbiat Modares UniversityTehran***Iran A.Leon Linton Department of Mechanical Robotics and Industrial EngineeringLawrence Technological UniversitySouthfieldMI48075USA Department of Mechanical Engineering Faculty of EngineeringMeybod UniversityYazd***Iran Department of Industrial Engineering University of SalernoVia Giovanni PaoloⅡFiscianoItaly Italian Aerospace Research Center(C.I.R.A.) Via MaioriseCapuaCE81043Italy

Repairs of corroded high-pressure pipelines are essential for fluids transportation under high *** of the methods used in their repairs is the use of layered *** composite used must have the necessary ***,the experiments and analytical solutions presented in this paper are performed according to the relevant standards and codes,including ASME PCC-2,ASME B31.8S,ASME B31.4,ISO 24817 and ASME *** addition,the experimental tests are replicated numerically using the finite element *** the strain gauges at different distances from the defect location,can reduce the nonlinear effects,deformation,and fluctuations due to the high *** direct relationship between the depth of an axial defect and the stress concentration is observed at the inner side edges of the *** reparation reduces the non-linearities related to the sharp variation of the geometry and a more reliable numerical simulation could be performed.

关键词： High-pressure pipeline composite repair ASME PCC-2 ISO 24817

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

knowledge‐based deep learning system for classifying Alzheimer's disease for multi‐task learning

引用

CAAI Transactions on Intelligence Technology 2024年第4期9卷 805-820页

作者： Amol Dattatray Dhaygude gaurav kumar Ameta Ihtiram Raza khan Pavitar Parkash singh Renato R.Maaliw III Natrayan Lakshmaiya Mohammad Shabaz Muhammad Attique khan Hany S.Hussein Hammam Alshazly Department of Data Science University of WashingtonSeattleWashingtonUSA Department of Computer Science&Engineering Parul Institute of TechnologyParul UniversityVadodaraGujaratIndia Department of Computer Science Jamia HamdardDelhiIndia Department of Management Lovely Professional UniversityPhagwaraIndia 5 College of Engineering Southern Luzon State UniversityLucbanQuezonPhilippines Department of Mechanical Engineering Saveetha School of EngineeringSIMATSChennaiTamil NaduIndia Model Institute of Engineering and Technology JammuJ&KIndia Department of Computer Science HITEC UniversityTaxilaPakistan Department of Computer Science and Mathematics Lebanese American UniversityBeirutLebanon Electrical Engineering Department College of EngineeringKing Khalid UniversityAbhaSaudi Arabia Electrical Engineering Department Aswan UniversityAswanEgypt Faculty of Computers and Information South Valley UniversityQenaEgypt

Deep learning has recently become a viable approach for classifying Alzheimer's disease(AD)in medical ***,existing models struggle to efficiently extract features from medical images and may squander additional information resources for illness *** address these issues,a deep three‐dimensional convolutional neural network incorporating multi‐task learning and attention mechanisms is *** upgraded primary C3D network is utilised to create rougher low‐level feature *** introduces a new convolution block that focuses on the structural aspects of the magnetORCID:ic resonance imaging image and another block that extracts attention weights unique to certain pixel positions in the feature map and multiplies them with the feature map ***,several fully connected layers are used to achieve multi‐task learning,generating three outputs,including the primary classification *** other two outputs employ backpropagation during training to improve the primary classification *** findings show that the authors’proposed method outperforms current approaches for classifying AD,achieving enhanced classification accuracy and other in-dicators on the Alzheimer's disease Neuroimaging Initiative *** authors demonstrate promise for future disease classification studies.

关键词： classification deep learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Diuretic Activity of Ethanol Extract of Piper attenuatum Leaves Might Be Due to the Inhibition of Carbonic Anhydrase Enzyme:An in vivo and in silico Investigation

引用

Clinical Complementary Medicine and Pharmacology 2024年第1期4卷 62-68页

作者： Shikha Sharma gaurav kumar Nitin kumar Neeraj k.Sethiya Dheeraj Bisht Department of Pharmaceutical Sciences Lords UniversityAlwarRajasthan 301028India Navsahyadri Institute of Pharmacy NasrapurPuneMaharashtra 412213India Faculty of Pharmacy DIT UniversityMussoorie Diversion RoadDehradunUttarakhand 248009India Devsthali Vidyapeeth College of Pharmacy(Veer Madho singh Bhandari Uttarakhand Technical University Dehradun)LalpurRudrapurUttarakhand 263148India

Background:Ayurvedic system of medicine is well established for prevention and treatment of renal *** are vast number of medicinal plants mentioned in Ayurvedic system of medicine,including Piper attenuatum Buch.-*** Miq.,which has been known to exhibit diuretic ***:To investigate possible mechanism and diuretic activity of ethanol extract of *** ***:Present study reports an in vivo diuretic activity of ethanol extracts of *** ***-four Sprague-Dawley male rats were deprived from food and water for 20 h,followed by being divided into four groups to receive normal saline,Furosemide,and two doses of the ethanol extract,***,the ethanol extract were subjected for prelimnary phytochemical screening test,and analytical investigation was performed via high-performance thin-layer chromatography(HPTLC),followed by effectiveness exploration of putative bioactive compounds from *** against human carbonic anhydrase(hCA)enzyme using molecular docking ***:During phytochemicals screening,several groups of compounds such as amides,terpenoids,proteins,flavonoids,and glycosides have been ***,HPTLC reveals presence of carbohydrates,proteins,amino acids,steroids,alkaloids,flavonoids,tannins,glycosides,and *** diuretic action was revealed for both 200 mg/kg bw and 400 mg/kg bw of ethanol extract of *** ***,molecular docking analysis demonstrated greater binding affinity of compounds such as Cepharadione A,Nor-cepharadione B,Galbelgin,Crotepoxide,and Pipoxide chlorohydrin out of total 23 studied compounds against hCA isoforms(a key biomarker for diuretic)and score is comparable with standard drug ***:It was concluded from the present studies that ethanol extract of *** leaves exhibits signifi-cant diuretic *** activity may be correlated due to the presence of Cepharadione A,Norcepharadion

关键词： Piper attenuatum Diuretic activity Phytochemicals In silico and molecular docking

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Optimization of process for the production of bio-oil from eucalyptus wood

引用

燃料化学学报 2010年第2期38卷 162-167页

作者： gaurav kUMAR Achyut k PANDA R k.singh National Institute of Technology Rourkela Orissa PIN： 769008 India Jagannath Institute for Technology and Management Parlakhemundi Orissa India

The pyrolysis of eucalyptus wood was carried out in a batch reactor to optimize the yield of *** of various parameters like feed(particle) size,temperature,presence of catalyst and heating rate on the yield of bio-oil was *** optimum conditions for high yield of bio-oil are for the particle size 2 mm^5 mm(average l/d=12.84/2.03 mm) at 450 ℃ in high heating *** reaction kinetics and the quality of bio-oil produced are independent of the presence of different catalysts like mordenite,kaoline clay,fly ash and silica *** physical properties like odour,colour,PH,viscosity,heating value were *** FT-IR analysis of bio-oil indicates the presence of different functional groups such as monomeric alcohol,phenol,ketones,aldehydes,carboxylic acid,amines,and nitro *** composition of the bio-oil at different conditions was analyzed using GC-MS and found that the components are temperature dependent but independent of catalysts used.

关键词：热反应晶体结构生物能源

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Precision phenotyping of contrasting potato(Solanum tuberosum L.) varieties in a novel aeroponics system for improving nitrogen use efficiency: In search of key traits and genes

引用

Journal of Integrative Agriculture 2020年第1期19卷 51-61页

作者： Jagesh k.TIWARI Sapna DEVI Tanuja BUCkSETH Nilofer ALI Rajesh k.singh Rasna ZINTA Vijay k.DUA Swarup k.CHAkRABARTI Indian Council of Agricultural Research-Central Potato Research Institute

With increasing population, degrading soil health, limited arable land area, and high cost of nitrogen(N) fertilizers, improving nitrogen use efficiency(NUE) of potato is an inevitable approach to save the environment and achieve sufficient tuber yields with less N fertilizer supply. Recently, we have developed an aeroponics system to study NUE in potato using genomics, physiology, and breeding approaches. This study aims on precision phenotyping of plants of two distinct potato varieties(kufri gaurav, N efficient;kufri Jyoti, N inefficient) in the novel aeroponics system. Plants were grown in aeroponics under controlled conditions with low N(0.75 mmol L^-1NO3^-) and high N(7.5 mmol L^-1NO3^-) levels. Plant biomass, root traits, total chlorophyll content, and plant N were increased with increasing N supply, whereas higher NUE parameters namely NUE, agronomic NUE(Ag NUE), N uptake efficiency(NUp E), harvest index(HI), and N harvest index(NHI) were observed at low N. An NUE efficient cv. kufri gaurav showed higher tuber dry weight, fresh tuber yield, tuber number per plant, early start of tuber harvesting, root traits, stolon traits, NUE parameters, and higher amino acid(aspartic acid and asparagine) content at low N supply. Higher expression of nitrate reductase(NR), nitrite reductase(NIR), and asparagine synthetase(AS) genes was observed in the leaf tissues of kufri gaurav at high N. Thus, aeroponics-based precision phenotyping enables identification of NUE efficient genotypes based on key traits and genes involved in improving NUE in potato. Further, this study suggests that the potential of aeroponics can be utilized to investigate N biology in potato under different N regimes.

关键词： aeroponics precision phenotyping potato nitrogen use efficiency

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Estimating Fuel-Efficient Air Plane Trajectories Using Machine Lear

引用

Computers, Materials & Continua 2022年第3期70卷 6189-6204页

作者： Jaiteg singh gaurav Goyal Farman Ali Babar Shah Sangheon Pack Chitkara University Institute of Engineering&Technology Chitkara UniversityPunjab140401India Department of Software Sejong UniversitySeoul05006Korea College of Technological Innovation Zayed UniversityUAE School of Electrical Engineering Korea UniversitySeoulKorea

Airline industry has witnessed a tremendous growth in the recent *** of people choosing air travel as first choice to commute is continuously *** demanding and congested air routes are resulting in inadvertent delays,additional fuel consumption and high emission of greenhouse *** planning involves creation identification of cost-effective flight plans for optimal utilizationof fuel and *** situation warrants the need of an intelligent system for dynamic planning of optimized flight trajectories with least human intervention *** this paper,an algorithm for dynamic planning of optimized flight trajectories has been *** proposed algorithm divides the airspace into four dimensional cubes and calculate a dynamic score for each cube to cumulatively represent estimated weather,aerodynamic drag and air traffic within that virtual *** are several constraints like simultaneous flight separation rules,weather conditions like air temperature,pressure,humidity,wind speed and direction that pose a real challenge for calculating optimal flight *** validate the proposed methodology,a case analysis was undertaken within Indian *** flight routes were simulated for four different air routes within Indian *** experiment results observed a seven percent reduction in drag values on the predicted path,hence indicates reduction in carbon footprint and better fuel economy.

关键词： Airplane trajectory coefficient of drag four-dimensional trajectory prediction machine learning route planning stochastic processes

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bacopa monnieri extracts prevent hydrogen peroxide- induced oxidative damage in a cellular model of neuroblastoma IMR32 cells

引用

Chinese Journal of Natural Medicines 2017年第11期15卷 834-846页

作者： gaurav Bhatia Vikram Dhuna kshitija Dhuna Manpreet kaur Jatinder singh Department of Molecular Biology and Biochemistry Guru Nanak Dev University Amritsar-143005 Punjab India Department of Biotechnology DAV College Amritsar-143006 Punjab India Department of Human Genetics Guru Nanak Dev University Amritsar-143005 Punjab India

Neurodegenerative diseases are the consequences of imbalance between the production of oxidative stress and its nullification by cellular defense mechanisms. Hydrogen peroxide(H_2O_2), a precursor of deleterious reactive oxygen species, elicits oxidative stress, resulting in severe brain injuries. Bacopa monnieri is well known for its nerve relaxing and memory enhancing properties. The present study was designed to evaluate the protective effects of extracts from Bacopa monnieri against H_2O_2 induced oxidative stress using a cellular model, neuroblastoma IMR32 cell line. The protective potential of methanolic, ethanolic, and water extracts of B. monnieri(BM-MEx, BM-EEx, and BM-WEx) was evaluated using MTT assay. Although, all the B. monnieri extracts were found to protect cells against H_2O_2-mediated stress but BM-MEx showed significantly greater protection. UPLC analysis of BM-MEx revealed various polyphenols, including quercetin, catechin, umbelliferone, and caffeic acid predominance. Further, BM-MEx was found to possess considerable greater neuroprotective potential in comparison to the standard polyphenols such as quercetin, catechin, umbelliferone, and caffeic acid. The levels of antioxidant enzymes were significantly elevated after the pretreatment of BM-MEx and quercetin. The expression levels of oxidative stress markers, such as NF200, HSP70, and mortalin, were significantly alleviated after the pretreatment of BM-MEx as shown by immunofluorescence and RT-PCR. In conclusion, the present study demonstrated the protective effects of BM-MEx, suggesting that it could be a candidate for the development of neuropathological therapeutics.

关键词： Antioxidant enzymes Bacopa monnieri H2O2 IMR32 neuroblastoma NF200 HSP70 Mortalin

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Monitoring of lithium-ion cells using a microcontroller

引用

Clean Energy 2022年第1期6卷 89-96页

作者： gaurav Pratap singh Yash Lehri Lakshay Bhatia Yogesh Sehgal Department of Electrical and Electronics Department Bharati Vidyapeeth’s College of EngineeringNew DelhiIndia

Safe and efficient operation of batteries is always desired but batteries with a high energy density pose a threat to the system causing thermal breakdown,reduced performance and rapid *** reduce such vulnerabilities,an optimum environment with controlled parameters is *** parameters have been considered for analysis,*** of charge,current,voltage and *** module makes a detailed analysis of the above-mentioned parameters and suggests a microcontroller-based prototype that is capable of monitoring the external factors in real time and generating relevant warnings.

关键词： lithium ion battery-management system thermal runaway battery temperature battery current battery voltage microcontrollers

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A comprehensive review on bioactive peptides derived from milk and milkproducts of minor dairy species

引用

Food Production, Processing and Nutrition 2021年第1期3卷 11-31页

作者： Snigdha Guha Heena Sharma gaurav kr Deshwal Priyanka singh Rao Department of Food Science and Technology University of Nebraska-LincolnLincolnNE 68588-6205USA Food Technology Laboratory Dairy Technology DivisionNational Dairy Research Institute(ICAR-NDRI)KarnalHaryana 132001India Dairy Chemistry and Bacteriology Section Southern Regional Station-National Dairy Research InstituteBengaluru 560030India

Milk from different species has been exploited for the isolation of various functional ingredients for *** of the source,milk is considered as a complete food,as it provides essential nutrients required by the human *** and their fractions are valuable sources of bioactive peptides that might exert a health beneficial role in the human body such as immune-modulation,antioxidant activity,ACE-inhibitory activity,anti-neoplastic,anti-microbial,*** milk,bioactive peptides may either be present in their natural form or released from their parental proteins due to enzymatic *** increasing interest in bioactive peptides among researchers has lately augmented the exploration of minor dairy species such as sheep,goat,camel,mithun,mare,and *** to cow,milk from minor dairy species have also been proven to be healthier from infancy to older age owing to their higher digestibility and other nutritive ***,realizing the significance of milk from such species and incentivized interest towards the derivatization of bioactive peptides,the present review highlights the significant research achievements on bioactive peptides from milk and milk products of minor dairy species.

关键词： Milk protein Bioactive peptides Camel Goat Sheep Donkey

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：