检索结果-南通市图书馆

维普期刊数据库博看期刊

在线全文

学校读者我要写书评

暂无评论

水基完井液静态沉降稳定性影响因素研究

精细石油化工 2024年第1期41卷 56-59页

作者：杨兰平杜仕勇夏榆皓徐兴宇张太亮程鑫中国石油集团川庆钻探工程有限公司钻井液技术服务公司四川成都610051 西南石油大学化学化工学院四川成都610500

通过研究不同密度的水基完井液在不同温度下沉降1~15 d的流变性能、滤失性能和沉降稳定性,计算不同因素间的皮尔森系数绘制热力图,考察了不同因素对静态稳定分层指数(SSSI)的影响。实验结果表明:沉降15 d内,不同密度完井液的清液量与SSS... 详细信息

通过研究不同密度的水基完井液在不同温度下沉降1~15 d的流变性能、滤失性能和沉降稳定性,计算不同因素间的皮尔森系数绘制热力图,考察了不同因素对静态稳定分层指数(SSSI)的影响。实验结果表明:沉降15 d内,不同密度完井液的清液量与SSSI值的相关性系数均达到0.91;完井液密度、老化时间以及沉降温度与SSSI值的相关性系数分别为0.64、0.58和0.23,即沉降稳定性的影响因素由大到小排列的顺序为完井液密度—老化时间—沉降温度,但沉降温度、老化时间分别与密度呈现竞争关系。

关键词：水基完井液静态沉降稳定性 SSSI值皮尔森相关性系数热力图

Development of a High Temperature and High Pressure Oil-Based Drilling Fluid Emulsion Stability Tester

在线全文

学校读者我要写书评

暂无评论

Open Journal of yangtze Oil and Gas 2021年第2期6卷 25-35页

作者： Huaiyuan Long Wu Chen Dichen Tan lanping yang Shunyuan Zhang Song Wang yangtze University Jingzhou China China Petroleum Corporation Chuanqing Drilling Drilling Fluid Company Chengdu China China Petroleum Corporation Engineering Technology Research Institute Co. Ltd. Beijing China

When drilling deep wells and ultra-deep wells, the downhole high temperature and high pressure environment will affect the emulsion stability of oil-based drilling fluids. Moreover, neither the demulsification voltage method nor the centrifugal method currently used to evaluate the stability of oil-based drilling fluids can reflect the emulsification stability of drilling fluids under high temperature and high pressure on site. Therefore, a high-temperature and high-pressure oil-based drilling fluid emulsion stability evaluation instrument is studied, which is mainly composed of a high-temperature autoclave body, a test electrode, a temperature control system, a pressure control system, and a test system. The stability test results of the instrument show that the instrument can achieve stable testing and the test data has high reliability. This instrument is used to analyze the factors affecting the emulsion stability of oil-based drilling fluids. The experimental results show that under the same conditions, the higher the stirring speed, the better the emulsion stability of the drilling fluid;the longer the stirring time, the better the emulsion stability of the drilling fluid;the greater the oil-water ratio, the better the emulsion stability of the drilling fluid. And the test results of the emulsification stability of oil-based drilling fluids at high temperature and high pressure show that under the same pressure, as the temperature rises, the emulsion stability of oil-based drilling fluids is significantly reduced;at the same temperature, the With the increase in pressure, the emulsion stability of oil-based drilling fluids is in a downward trend, but the decline is not large. Relatively speaking, the influence of temperature on the emulsion stability of oil-based drilling fluids is greater than that of pressure.

关键词： Oil-Based Drilling Fluid Emulsification Demulsification Voltage Tester High Temperature and High Pressure

A preliminary study on life history of marine red alga Stylonema alsidii(Zandardini)Drew *** Zheng et Li

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

Journal of Oceanology and Limnology 2024年第3期42卷 915-922页

作者： Bingxin HUANG Yao ZHANG Yue CHU Youxuan GUO Junxia LIANG Jianan QIN lanping DING Tianjin Key Laboratory of Animal and Plant Resistance College of Life SciencesTianjin Normal UniversityTianjin 300387China

Stylonema alsidii(Zandardini)Drew *** Zheng et Li is a common species in the genus Stylonema,but there are limited reports on morphological taxonomy and a lack of studies on life history and the regulation of early *** early development,discoid formation,and erect thallus growth of Stylonema alsidii *** were observed under laboratory *** addition,the influence of main environmental factors such as temperature and light intensity on its development was briefly studied,and various stages of its life history were *** result shows:(1)there are two reproductive modes:asexual reproduction and sexual reproduction;(2)the morphology of this species varies in different degrees under laboratory culture conditions;(3)sexual reproduction and asexual reproduction can coexist under suitable *** pathways of life history were inferred from experimental *** sporophytes form mature gametophytes by producing initially isolated or initially attached monospore,and mature gametophytes form mature sporophytes by fertilization of eggs and *** sexual and asexual reproduction processes of Stylonema alsidii *** were reported for the first time,and this is also the first report on sexual reproduction in the genus Stylonema.

关键词： Stylonema alsidii(Zandardini)Drew f.ramosum Zheng et Li life history environmental factor asexual reproduction sexual reproduction

Gut liver brain axis in diseases:the implications for therapeutic interventions

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第1期9卷 79-104页

作者： Mengyao Yan Shuli Man Benyue Sun Long Ma lanping Guo Luqi Huang Wenyuan Gao State Key Laboratory of Food Nutrition and Safety Key Laboratory of Industrial MicrobiologyMinistry of EducationTianjin Key Laboratory of Industry MicrobiologyNational and Local United Engineering Lab of Metabolic Control Fermentation TechnologyChina International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal ChemistryCollege of BiotechnologyTianjin University of Science&Technology300457 TianjinChina National Resource Center for Chinese Materia Medica China Academy of Chinese Medical Sciences100700 BeijingChina Tianjin Key Laboratory for Modern Drug Delivery&High-Efficiency School of Pharmaceutical Science and TechnologyTianjin UniversityWeijin Road300072 TianjinChina

Gut-liver-brain axis is a three-way highway of information interaction system among the gastrointestinal tract,liver,and nervous *** the past few decades,breakthrough progress has been made in the gut liver brain axis,mainly through understanding its formation mechanism and increasing treatment *** this review,we discuss various complex networks including barrier permeability,gut hormones,gut microbial metabolites,vagus nerve,neurotransmitters,immunity,brain toxic metabolites,β-amyloid(Aβ)metabolism,and epigenetic regulation in the gut-liver-brain *** therapies containing antibiotics,probiotics,prebiotics,synbiotics,fecal microbiota transplantation(FMT),polyphenols,low FODMAP diet and nanotechnology application regulate the gut liver brain ***,some special treatments targeting gut-liver axis include farnesoid X receptor(FXR)agonists,takeda G protein-coupled receptor 5(TGR5)agonists,glucagon-like peptide-1(GLP-1)receptor antagonists and fibroblast growth factor 19(FGF19)*** gut-brain axis embraces cognitive behavioral therapy(CBT),antidepressants and tryptophan metabolism-related *** liver-brain axis contains epigenetic regulation and Aβmetabolism-related *** the future,a better understanding of gut-liver-brain axis interactions will promote the development of novel preventative strategies and the discovery of precise therapeutic targets in multiple diseases.

关键词： metabolism therapeutic immunity

Effects and mechanisms of Panax notoginseng-steamed chicken on uterine involution in mice

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

Food Science and Human Wellness 2024年

作者： Zhuowen Chen Yue Dang lanping Guo Yuan Qu Yuan Liu Xiaoyan yang Xiuming Cui Chengxiao Wang Ye yang School of Life Science and Technology， Kunming University of Science and Technology Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province China Academy of Chinese Medical Sciences

Panax notoginseng-steamed chicken (PNSC) is a common medicinal diet in China. In this study， we conducted comprehensive analysis to determine the effect of PNSC on uterine involution in postpartum mice and human umbilical vein endothelial cells. The role of the PI3K/AKT/mTOR pathway in this process was explored. Results showed that PNSC promoted the recovery of endometrial hyperplasia and uterine index in postpartum mice. In vitro and in vivo experiments indicated that PNSC activated PI3K/AKT/mTOR signaling pathway， promoted the proliferation of human umbilical vein endothelial cells (HUVEC)， up-regulated the expression of VEGF， and its binding to VEGFR2. Moreover， it increased the expression of PCNA， MMP9， and CyclinD1 in the nucleus. Moreover， it up-regulated the secretion of hormones， such as prolactin (PRL)， progesterone (P)， as well as the level of vascular endothelial growth factor (VEGF) in mice， and down-regulated the secretion of endothelin-1 hormones (ET-1)， thereby promoting uterine involution. In conclusion， this study demonstrates that PNSC can regulate angiogenesis to promote uterine involution by activating the PI3K/AKT/mTOR pathway.

关键词：

A Study on the Chemical Compositions of the Jasminum Sambac (L. ) Aiton in Various Farming Seasons During the Blossom Period in Fuzhou Region

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

福建分析测试 1998年第1期7卷 785-792页

作者： Guo Youjia, Dai Liang, yang lanping and Ren Qing (Fujian Institute of Reserch on the Structure of Matter, Academia sinica, Fuzhou, 350002)

The chemical compositions of the head space,essential oil and absolute of jasmin flowers in different farming seasons during the blossom period in Fuzhou were reported in this paper.

关键词： chemical compesitions jasmin flower farming seasons blossom period GC/MS GC Fuzhou

GAS-PHASE ION-MOLECULAR REACTION OF HEXANUCLEAR RUTHENIUM CARBONYL COMPOUND WITH TRIPHENYL-PHOSPHINE

在线全文

学校读者我要写书评

暂无评论

福建分析测试 1998年第4期7卷 933-936页

作者： lanping yang, Qi Peng, Zhoubin Lin (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Academia Sinica, Fuzhou 350002)

Hexanuclear ruthenium cluster compound Ru6C （CO）17 has interesting activity in the gase-phase. The ion-molecular reaction of Ru6C （CO）17 with triphcnylphosphine was investigated by EI-MS. The experimental results showed that Ru6C （CO）17 could undergo the ligand substitution by PPh2 or PPh3 to initially yield monosubstituted product [Ru6C（CO）16PPh2]+ or [Ru6C （CO）16PPh3]+.

关键词： ruthenium carbonly cluster ion-molecular reaction EI-MS

Effect of gas components on the postdischarge temporal behavior of OH and O of a non-equilibrium atmospheric pressure plasma driven by nanosecond voltage pulses

在线全文

学校读者我要写书评

暂无评论

Plasma Science and Technology 2024年第5期26卷 72-81页

作者：王兰萍聂兰兰卢新培 State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074People’s Republic of China

OH radicals and O atoms are two of the most important reactive species of non-equilibrium atmospheric pressure plasma(NAPP),which plays an important role in applications such as plasma ***,experimental studies on how the gas content affects the postdischarge temporal evolutions of OH and O in the noble gas ns-NAPP are very *** this work,the effect of the percentages of O_(2),N_(2),and H_(2)O on the amounts of OH and O productions and their post-discharge temporal behaviors in ns-NAPP is investigated by laser-induced fluorescence(LIF)*** results show that the productions of OH and O increase and then decrease with the increase of O_(2)*** OH and O densities reach their maximum when about 0.8%O_(2)is *** increase of the O_(2)concentration results in a decrease of the initial densities of both OH and O,and leads to their faster *** increase of N_(2)percentage also results in the increase and then decrease of the OH and O densities,but the change is ***,when the H_(2)O concentration is increased from 100 to 3000 ppm,the initial OH density increases slightly,but the OH density decays much faster,while the initial density of O decreases with the increase of the H_(2)O *** analysis,it is found that OH and O are mainly produced through electron collisional dissociation.O(^(1)D)is critical for OH generation.O_(3)accelerates the consumption processes of OH and O at high O_(2)*** addition of H_(2)O in the NAPP considerably enhances the electronegativity,while it decreases the overall plasma reactivity,accelerates the decay of OH,and reduces the O atom density.

关键词： O atom OH radical post-discharge temporal behavior laser-induced fluorescence

在线全文

学校读者我要写书评

暂无评论

基于二维条码识别的物流分拣生产线的开发

山东冶金 2017年第5期39卷 60-61页

作者：杨兰萍山东鑫峰工程设计有限公司山东济南250014

本系统应用成熟的PLC系统和二维条码技术,结合云服务等先进技术,实现了新、老技术的融合,提高了分拣生产线的自动化水平。该控制系统调试阶段表明,系统能每天分拣10万件物品。

关键词：二维条码云服务分拣自动化