检索结果-南通市图书馆

Gas hydrate saturation from NGHP 02 LWD data in the Mahanadi Basin

Energy Geoscience 2024年第2期5卷 279-289页

作者： uma Shankar Pradeep Kumar Yadav Sneha Devi Udham Singh Yadav Department of Geophysics Institute of ScienceBHUVaranasi221005India Oil and Natural Gas Corporation Ltd. Gas Hydrate Research&Technology Centre(GHRTC)Panvel410221Navi MumbaiIndia

During the Indian National Gas Hydrate Program(NGHP)Expedition 02,Logging-while-drilling(LWD)logs were acquired at three sites(NGHP-02-11,NGHP-02-12,and NGHP-02-13)across the Mahanadi Basin in area *** applied rock physics theory to available sonic velocity logs to know the distribution of gas hydrate at site NGHP-02-11 and *** physics modeling using sonic velocity at well location shows that gas hydrate is distributed mainly within the depth intervals of 150-265 m and 100 -215 mbsf at site NGHP-02-11 and NGHP-02-13,respectively,with an average saturation of about 4%of the pore space and the maximum concentration of about 40%of the pore space at 250 m depth at site NGHP-02-11,and at site NGHP-02-13 an average saturation of about 2%of the pore space and the maximum concentration of about 20%of the pore space at 246 m depth,as gas hydrate is distributed mainly within 100-246 mbsf at this *** of gas hydrate estimated from the electrical resistivity method using density derived porosity and electrical resistivity logs from Archie's empirical formula shows high saturation compared to that from the sonic ***,estimates of hydrate saturation based on sonic P-wave velocity may differ significantly from that based on resistivity,because gas and hydrate have higher resistivity than conductive pore fluid and sonic P-wave velocity shows strong effect on gas hydrate as a small amount of gas reduces the velocity significantly while increasing velocity due to the presence of *** site NGHP-02-11,gas hydrate saturation is in the range of 15%e30%,in two zones between 150-180 and 245-265 *** NGHP-02-012 shows a gas hydrate saturation of 20%e30%in the zone between 100 and 207 *** NGHP-02-13 shows a gas hydrate saturation up to 30%in the zone between 215 and 246 *** observations from rock physics modeling and Archie’s approximation show the gas hydrate concentrations are relatively low(<4%of the pore space)at the sites of the

关键词： Mahanadi Basin Gas hydrate Sonic log Effective medium modeling Electrical resistivity log Archie’s analysis Gas hydrate saturation

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

Computational screening of disease associated mutations on NPC1 gene and its structural consequence in Niemann-Pick type-C1

引用

Frontiers in Biology 2014年第5期9卷 410-421页

作者： Naresh KANDAKATLA Geetha RAMAKRISHNAN Rajasekhar CHEKKAR Namachivayam balakrishnan Department of Chemistry Sathayabama University Jeppiaar Nagar Chennai-600119 India St. Joseph's College Bharathidasan University Tiruchirappalli 620002 India

Niemann-Pick disease type C1 （NPC1）, caused by mutations of NPC1 gene, is an inherited lysosomal lipid storage disorder. Loss of functional NPC1 causes the accumulation of free cholesterol （FC） in endocytic organelles that comprised the characteristics of late endosomes and/or lysosomes. In this study we analyzed the pathogenic effect of 103 nsSNPs reported in NPC1 using computational methods. Rl186C, S940L, R958Q and I1061T mutations were predicted as most deleterious and disease associated with NPC1 using SIFT, Polyphen 2.0, PANTHER, PhD-SNP, Pmut and MUTPred tools which were also endorsed with previous in vivo experimental studies. To understand the atomic arrangement in 3D space, the native and disease associated mutant （Rl186C, S940L, R958Q and I1061T） structures were modeled. Quantitative structural and flexibility analysis was conceded to observe the structural consequence of prioritized disease associated mutations （R1186C, S940L, R958Q and I1061T）. Accessible surface area （ASA）, free folding energy （FFE） and hydrogen bond （NH bond） showed more flexibility in 3D space in mutant structures. Based on the quantitative assessment and flexibility analysis of NPC1 variants, I1061T showed the most deleterious effect. Our analysis provides a clear clue to wet laboratory scientists to understand the structural and functional effect of NPCI gene upon mutation.

关键词： Niemann-Pick disease type C 1 SNPs gene mutation

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

Vickers and Knoop Micro-hardness Behavior of Coarse-and Ultrafine-grained Titanium

引用

Journal of Materials Science & Technology 2010年第10期26卷 904-907页

作者： K.P.Sanosh A.balakrishnan L.Francis T.N.Kim Department of Information and Electronic Materials Engineering College of EngineeringPaichai University Laboratoire SIMAP GPM2 Grenoble-INPUJFCNRS 101 Rue de la PhysiqueBP46 38402 Saint Martin d'He' res CedexFrance University of Genova Department of Chemistry and Industrial Chemistry

The present study focuses on the relationship of hardness with grain size for commercially pure titanium （CpTi） and ultra fine grained titanium （UFG-Ti） produced by equal channel angular process （ECAP） of Cp-Ti）.Vickers and Knoop indentations of UFG-Ti at different loads was ～2.5 times harder than those of *** diffraction （XRD） analysis showed peak broadening in UFG-Ti due to reduced grain size and micro-lattice *** electron microscopy （SEM） revealed that ECAP had reduced the grain size of Cp-Ti by ～10 *** statistics showed UFG-Ti with lower dispersion in hardness values compare to Cp-Ti indicating a more uniform microstructure.

关键词： Vickers Knoop Hardness Ultrafine-grained Titanium

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

Antimicrobial activities of the tissue extracts of Babylonia spirata Linnaeus,1758 (Mollusca:Gastropoda) from Thazhanguda,southeast coast of India

引用

Asian Pacific Journal of Tropical Biomedicine 2012年第1期2卷 36-40页

作者： Periyasamy N Srinivasan M balakrishnan S Centre of Advanced Study in Marine Biology Faculty of Marine SciencesAnnamalai University

Objective:To investigate the antimicrobial activity of the tissue extracts of Babylonia spirata(***)against nine bacterial and three fungal ***:Crude extract of gastropod was tested for inhibition of bacterial and fungal *** assay was carried out by disc diffusion method and in vitro antifungal activity was determined against Czapex Dox *** antimicrobial activity was measured accordingly based on the inhibition zone around the disc impregnated with gastropod *** size of muscle protein was determined using sodium dodecyl sulfate polyacrylamide gel electrophoresis(SDS-PAGE).And fourier transform infrared spectroscopy(FT1R)spectro photometry analysis was also ***:The maximum inhibition zone(12 mm)was observed against Pseudomonas aeruginosa in the crude ethanol extract of *** and the minimum inhibition zone(2 mm)was noticed against Staphylococcus aureus in the crude methanol extract of *** extract of *** showed the highest activity against Vibrio parahaemolyticus,Staphylococcus aureus and Candida ***,acetone,methanol,chloroform and water extracts showed antimicrobial activity against almost all the bacteria and *** with water extracts,ethanol and methanol extracts showed higher activity against all *** molecular weight of protein of the gastropod sample ranged from 2-110 kDa on *** analysis revealed the presence of bioactive compounds signals at different ***:The research shows that the great medicinal value of the gastropod muscle of *** may be due to high quality of antimicrobial compounds.

关键词： Gastropod Babylonia spirata Antimicrobial activity SDS-PAGE FTIR Antibacterial activity Antifungal activity Inhibition zone Muscle protein Bioactive compound

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

Nutritional status and effect of seaweed chocolate on anemic adolescent girls

引用

Food Science and Human Wellness 2015年第1期4卷 28-34页

作者： A.Thahira Banua S.uma Mageswari Dept of Home Science Gandhigram Rural UniversityGandhigramIndia Dept of Food Service Management and Dietetics Avinashilingam UniversityCoimbatoreIndia

was carried out to study the nutritional status,develop a product incorporating seaweed and assess its impact on anemic adolescent *** hundred adolescent girls in the age group of 15–18 years were selected from a women’s college at Kilakarai,Tamil Nadu,India as the target group to find the prevalence of *** the 500 subjects 100 with a hemoglobin level of 7–9 g/dL(moderate anemia)were selected by purposive sampling technique for *** incorporated chocolate was formulated,standardized,tested for consumer acceptability and in vitro iron bioavailability and supplemented to the selected *** result of the study indicates that seaweed chocolate developed obtained the highest score for overall acceptability,56 mg of iron/100 g and 11.80 mg of bioavailable *** results were found to be promising as there was a significant increase in hemoglobin,TIBC,MCH,MCV,serum iron and serum ferritin levels in the selected *** are a less consumed natural resource but abundantly available in the coastal areas of India as they are rich source of nutrients and can be used as an effective therapeutic and nutrient adjunct.©2015 Beijing Academy of Food *** and hosting by Elsevier *** rights reserved.

关键词： Adolescent Iron deficiency Anemia Green seaweed Bioavailability

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

Evaluation of larvicidal activity of Pongamia pinnata extracts against three mosquito vectors

引用

Asian Pacific Journal of Tropical Biomedicine 2013年第11期3卷 853-858页

作者： Guna Ranjan Kolli balakrishnan Vijayan Raja Sundararajan GITAM Institute of Pharmacy GITAM University National Centre for Disease Control(Formely Southern India Branch NICD) Department of Pharmaceutical Biotechnology J.S.S College of Pharmacy

Objective:To evaluate the mosquito larvicidal activity of Pongamia pinnata(***)extracts against three mosquito ***:The methanol and hydroalcohol extracts of bark part of *** L were tested against fourth instar larvae of Culex quinqnefasciatus,Aedes aegypti and Anopheles *** mortality was observed 24 h and 48 h after treatment,data was subjected to probit analysis to determine lethal concentration(LC_(50)and LC_(90))to kill 50 and 90 percent of treated larvae of tested ***:The larval mortality was found in both methanol and hydroalcohol extracts of *** against Culex quinquefascialus,Aedes aegypti and Anopheles stephensi with LC_(50)values of 84.8,118.2 and 151.7 ppm;97.7,128.3 and 513 *** highest larval mortality was found in methanol extract of *** when comparable to the hydroalcohol ***:These results suggest that both methanol and hyrdoalcohol extracts have the potential to be used as an ideal ecofriendly approach for the control of disease *** could lead to isolation of novel natural larvicidal compounds.

关键词： Pongamia pinnata L. Larvicidal Mosquito vectors Culex quinquefasciatus Aedes aegypti Anopheles stephensi

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

Unexplained iron deficiency anemia:does Helicobacter pylori have a role to play?

引用

Gastroenterology Report 2018年第3期6卷 215-220,I0003页

作者： Savio John Juan Diego Baltodano Nilesh Mehta Katherine Mark uma Murthy Division of Gastroenterology and Hepatology State University of New York(SUNY)Upstate Medical UniversitySyracuseNew YorkNYUSA Department of Medicine SUNY Upstate Medical UniversitySyracuseNYUSA Department of Gastroenterology Syracuse VA Medical CenterSyracuseNYUSA

Background and aim:Testing for Helicobacter pylori(Hp)infection is recommended for work-up of unexplained iron deficiency anemia(IDA),although the evidence supporting this recommendation is *** aim of this study was to investigate the association between Hp infection and unexplained iron deficiency(ID)or IDA in the older adult population without significant upper gastrointestinal source of blood ***:Retrospective single-center cohort study;523 out of 1253 consecutive patients who underwent esophagogastroduodenoscopy with no significant upper and/or lower gastrointestinal source for blood loss or risk factors for *** were made between the Hp-positive and Hp-negative groups using Fisher exact test,chi-square test and Student’s *** and multiple logistic regression analyses were used to identify significant risk factors associated with ID and ***:One hundred and three subjects(19.7%)had Hp infection and 420(80.3%)were negative for ***-eight(22.1%)out of 307 subjects with available serum iron profile had unexplained ID and 28(5.4%)out of 510 subjects with available hemoglobin profile had unexplained *** association was found between ID/IDA and Hp infection in univariate and multiple logistic regression ***:We found no association between unexplained ID or IDA and Hp infection in older adult population without peptic ulcer disease or significant upper gastrointestinal source of blood loss.

关键词： Helicobacter pylori anemia iron deficiency

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

Gait Image Classification Using Deep Learning Models for Medical Diagnosis

引用

Computers, Materials & Continua 2023年第3期74卷 6039-6063页

作者： Pavitra Vasudevan R.Faerie Mattins S.Srivarshan Ashvath Narayanan Gayatri Wadhwani R.Parvathi R.maheswari School of Computer Science and Engineering Vellore Institute of TechnologyChennaiTamil NaduIndia centre for smart grid technologies scopevellore institute of technologychennaitamil naduindia

Gait refers to a person’s particular movements and stance while moving *** each person’s gait is unique and made up of a variety of tiny limb orientations and body positions,they all have common characteristics that help to define *** identifying such characteristics that are difficult to spot by the naked eye,can help in monitoring the elderly who require constant care and *** silhouettes is the easiest way to assess and make any necessary adjustments for a smooth *** also becomes an important aspect of decision-making while analyzing and monitoring the progress of a patient during medical *** images made publicly available by the Chinese Academy of Sciences(CASIA)Gait Database was used in this *** evaluating using the CASIA B and C datasets,this paper proposes a Convolutional Neural Network(CNN)and a CNN Long Short-TermMemory Network(CNN-LSTM)model for classifying the gait silhouette *** learningmodels such as MobileNetV2,InceptionV3,Visual Geometry Group(VGG)networks such as VGG16 and VGG19,Residual Networks(ResNet)like the ResNet9 and ResNet50,were used to compare the efficacy of the proposed *** proved to be the best by achieving the highest accuracy of 94.29%.This was followed by ResNet9 and CNN-LSTM,which arrived at 93.30%and 87.25%accuracy,respectively.

关键词： CNN CNN-LSTM transfer learning CASIA datasets gait analysis

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

Petrogenesis of 3.15 Ga old Banasandra komatiites from the Dharwar craton, India： Implications for early mantle heterogeneity

引用

Geoscience Frontiers 2017年第3期8卷 467-481页

作者： J.M.Maya Rajneesh Bhutani S.balakrishnan S.Rajee Sandhya Department of Earth Sciences Pondicherry University

Spinifex-textured, magnesian （MgO 〉25 wt.%） komatiites from Mesoarchean Banasandra greenstone belt of the Sargur Group in the Dharwar craton, India were analysed for major and trace elements and 147,146Sm-143,142Nd systematics to constrain age, petrogenesis and to understand the evolution of Archean mantle. Major and trace element ratios such as CaOJAl203, Al2O3JTiO2, GdJYb, LaJNb and NbJY suggest aluminium undepleted to enriched compositional range for these komatiites. The depth of melting is estimated to be varying from 120 to 240 km and trace-element modelling indicates that the mantle source would have undergone multiple episodes of melting prior to the generation of magmas parental to these komatiites. Ten samples of these komatiites together with the published results of four samples from the same belt yield 147Sm-143Nd isochron age of ca. 3.14 Ga with an initial ENd（t） value of ＋3.5. High precision measurements of 142Nd/144Nd ratios were carried out for six komatiite samples along with standards AMES and La Jolla. All results are within uncertainties of the terrestrial samples. The absence of 142Nd/144Nd anomaly indicates that the source of these komatiites formed after the extinction of 146Sm, i.e. 4.3 Ga ago. In order to evolve to the high eNd（t） value of ＋3.5 by 3.14 Ga the time-integrated ratio of 147Sm/144Nd should be 0.2178 at the minimum. This is higher than the ratios estimated, so far, for mantle during that time. These results indicate at least two events of mantle differentiation starting with the chondritic composition of the mantle. The first event occurred very early at ~ 4.53 Ga to create a global early depleted reservoir with superchondritic Sm/Nd ratio, The source of Isua greenstone rocks with positive ~42Nd anomaly was depleted during a second differentiation within the life time of 146Sm, i.e. prior to 4.46 Ga. The source mantle of the Banasandra komatiite was a result of a differentiation event that occurred after the extinction of the 14

关键词： Komatiite Dharwar craton Early mantle differentiation 142Nd/144Nd Sm-Nd geochronology

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

Genome tuning through HLA and KIR gene clusters impact susceptibility to dengue

Infectious Medicine

引用

Infectious Medicine 2023年第3期2卷 167-177页

作者： Neha Sharma Gaurav Sharma uma Kanga Devinder Toor Department of Biosciences School of Basic and Applied SciencesGalgotias UniversityGreater Noida 203201India Department of Translational and Regenerative Medicine Postgraduate Institute of Medical Education and ResearchChandigarh 160012India Department of Transplant Immunology and Immunogenetics All India Institute of Medical SciencesNew Delhi 110029India Amity University Uttar Pradesh Amity Institute of Virology and ImmunologyAmity UniversityNoida 201301India

Dengue is amongst the most prevalent viral diseases which globally affects millions of individuals annually and renders billions at risk,particularly in tropical and sub-tropical *** estimated 100-400 mil-lion infections each year and reported 4.2 million active cases in 2019 *** infection is caused by arthropod-transmitted dengue virus which is known to have 5 serotypes(DENV1-5).Most of the cases show mild clinical symptoms;though others may develop severe forms viz;dengue hemorrhagic fever and dengue shock *** limited literature suggests the population-specific genetic influence on susceptibility and the clinical course of dengue;the genetic propensity of dengue is largely unknown in most *** this context,the human leukocyte antigen(HLA)system represents the most polymorphic region of the human genome and is crucial for the initiation of an appropriate immune *** most of the genome-wide association studies,the HLA complex is the most significantly linked genetic region with susceptibility or protection towards vari-ous infectious and noninfectious *** immunoglobulin-like receptors represent another highly variable system present on the surface of natural killer(NK)cells which regulate the activity of NK cells through inter-actions with their cognate HLA *** is conceivable that the interaction of HLA-Killer immunoglobulin-like receptors systems influences the host susceptibility towards dengue infection as well the disease *** we attempt to review these parameters in dengue infection and disease *** detailed investigations are warranted towards the identification of novel susceptibility markers and targeted therapeutic interventions.

关键词： DENV Human leukocyte antigen Killer immunoglobulin receptor Pathogenesis and genetic susceptibility

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：