检索结果-南通市图书馆

异戊橡胶IR 70门尼粘度标准物质不确定度的评定

在线全文

学校读者我要写书评

暂无评论

合成材料老化与应用 2017年第3期46卷 57-61页

作者：刘俊保黄世英李淑萍曹帅英中国石油兰州化工研究中心国家合成橡胶质量监督检验中心甘肃兰州730060

研制异戊橡胶IR 70门尼粘度标准物质,该标准物质的不确定度按照JJF 1059.1-2012规定分析不确定度各分量并进行评定。不确定度的来源主要为各定值实验室检测的分散性、样品的均匀性与稳定性、试验温度、试验时间、设备转速。经评定,异戊... 详细信息

研制异戊橡胶IR 70门尼粘度标准物质,该标准物质的不确定度按照JJF 1059.1-2012规定分析不确定度各分量并进行评定。不确定度的来源主要为各定值实验室检测的分散性、样品的均匀性与稳定性、试验温度、试验时间、设备转速。经评定,异戊橡胶IR 70门尼粘度标准物质的不确定度为1.0。

关键词：不确定度评定标准物质门尼粘度

Unraveling the mechanism of action of Shangxia liangji formula for treating insomnia:a metabolomics and network pharmacology approach

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2025年第2期10卷 16-29页

作者： Xia-Jie Quan Hao liang Yong-Hong Tang li Jiang Xiong-Ying Ji Feng-Ying Zhang ping Zhang Bo Ouyang Department of Information The Affiliated Nanhua HospitalHengyang Medical SchoolUniversity of South ChinaHengyang 421002China Department of Neurology The Affiliated Nanhua HospitalHengyang Medical SchoolUniversity of South ChinaHengyang 421002China Department of Gastroscopy The Affiliated Nanhua HospitalHengyang Medical SchoolUniversity of South ChinaHengyang 421002China Department of Traditional Chinese Medicine The Affiliated Nanhua HospitalHengyang Medical SchoolUniversity of South ChinaHengyang 421002China

Background:Insomnia is a prevalent clinical condition and Shangxia liangji formula(SXLJF)is a well-established method of ***,the specific mechanism of action of SXLJF remains ***:The mouse model of insomnia was established by intraperitoneal injection of ***-two mice were randomly divided into a negative control group,model group,SXLJF group(18.72 g/kg/day),and positive control group(diazepam,2 mg/kg)and treated with the corresponding drugs for 7 consecutive *** open field test and pentobarbital-induced sleeping test were ***-MS-based untargeted metabolomics and network pharmacology were applied to explore the potential targets of SXLJF for treating ***,key targets were validated using ***:Behavioral tests demonstrated that SXLJF reduced the total distance,average velocity,central distance,and sleep latency,and prolonged sleep *** and network pharmacology revealed potential targets,signaling pathways,metabolic pathways,and metabolites associated with the anti-insomnia effects of ***,tyrosine hydroxylase(TH)and tyrosine metabolism emerged as crucial metabolic pathways and targets,***-qPCR results supported the role of TH in the mechanism of SXLJF in treating ***:In conclusion,TH and tyrosine metabolism may represent significant targets and pathways for SXLJF in treating insomnia.

关键词： Shangxia liangji formula insomnia metabolomics network pharmacology tyrosine hydroxylase tyrosine metabolism

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

影响青少年身心健康的成因及对策

体育学刊 2001年第4期8卷 42-44页

作者：孙德瑞阎智力曹平大连海事大学体育部辽宁大连112205 辽宁师范大学体育学院辽宁大连116029 大连理工大学体教部辽宁大连116023

通过社会调查、访问和文献资料等多种研究方法 ,对影响青少年健康状况的体质、心理、道德和行为等方面的多种因素进行了分析与研究 ,阐述了影响青少年健康的成因及对策 ,为提高青少年的健康水平提供参考。

关键词：身心健康体质社会适应健康促进

Phosphatidylinositol 4-kinase β is required for the ciliogenesis of zebrafish otic vesicle

在线全文

学校读者我要写书评

暂无评论

Journal of Genetics and Genomics 2020年第10期47卷 627-636页

作者： Yufei Feng ping Yu Jingyu li Ying cao Jingjing Zhang Affiliated Hospital of Guangdong Medical University&Key Laboratory of Zebrafish Model for Development and Disease of Guangdong Medical University Zhanjiang 524001China Clinical and Translational Research Center Shanghai First Maternity and Infant HospitalSchool of Life Sciences and TechnologyTongji UniversityShanghai 200092China

The primary cilium,an important microtubule-based organelle,protrudes from nearly all the vertebrate *** motility of cilia is necessary for various developmental and physiological ***(PIs)and its metabolite,Ptd Ins(4,5)P2,have been revealed to contribute to cilia assembly and *** an important kinase of the PI pathway and signaling,phosphatidylinositol 4-kinaseβ(PI4 KB)is the one of the most extensively studied phosphatidylinositol 4-kinase ***,its potential roles in organ development remain to be *** investigate the developmental role of Pi4 kb,especially its function on zebrafish ciliogenesis,we generated pi4 kb deletion mutants using clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein 9 *** homozygous pi4 kb mutants exhibit an absence of primary cilia in the inner ear,neuromasts,and pronephric ducts accompanied by severe edema in the eyes and other ***,smaller otic vesicle,malformed semicircular canals,and the insensitivity on sound stimulation were characteristics of pi4 kb *** the protein level,both in vivo and in vitro analyses revealed that synthesis of Pi4 p was greatly reduced owing to the loss of Pi4 *** addition,the expression of the Pi4 kb-binding partner of neuronal calcium sensor-1,as well as the phosphorylation of phosphatidylinositol-4-phosphate downstream effecter of Akt,was significantly inhibited in pi4 kb *** together,our work uncovers a novel role of Pi4 kb in zebrafish inner ear development and the functional formation of hearing ability by determining hair cell ciliogenesis.

关键词： Ciliogenesis Pi4kb Hair cell Hearing loss Zebrafish

Experimental and CFD investigation of flow behavior and sand erosion pattern in a horizontal pipe bend under annular flow

在线全文

学校读者我要写书评

暂无评论

Particuology 2023年第4期75卷 11-25页

作者： Wenshan Peng li Ma ping Wang Xuewen cao Kun Xu Yichun Miao State Key Laboratory for Marine Corrosion and Protection Luoyang Ship Material Research Institute(LSMRI)Qingdao266237China School of Architecture and Engineering Qingdao Binhai UniversityQingdao266555China College of Pipeline and Civil Engineering China University of Petroleum(East China)Qingdao266580China Huizhou Xingsheng Petrochemical Storage Co. Ltd.Huizhou516081China

The internal erosion of pipelines in oil and gas storage and transportation engineering is highly *** gas velocity of annular flow entrained sand will cause damage to the pipelines,and may further result in thinning of the *** this damage lasts for a long time,it may cause pipeline leakage and cause huge economic losses and environmental *** this research,an experimental device for studying multiphase flow erosion is designed,including an erosion loop and an experimental elbow that can test the erosion *** annular flow state and pipe wall erosion morphology can also be tested by the *** computational fluid dynamics(CFD)method is combined with the experiment to further study the annular flow erosion mechanism in the *** relationship between gas-liquid-solid distribution and erosion profile was *** results show that the most eroded region occurs be-tween 22.5° and 45° in the axial angle direction and between 90° and 135° in the circumferential angle direction of the *** pits and deep scratches form on the surface of the sample after the sand collision.

关键词： Sand erosion Multiphase flow Elbow Experiment CFD numerical Simulation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2025年第6期13卷 24-29页

作者： Wen-Jin Yuan Yi-Juan Zheng Bing-Rong Zhang Yi-Jie lin You li Yan-Yan Qiu Xue-ping Yu Department of Infection Disease Clinical Medical Research Center for Bacterial and Fungal Infectious Diseases of Fujian provinceFujian Medical University Affiliated First Quanzhou HospitalQuanzhou 362000Fujian ProvinceChina

BACKGROUND Hydroxyurea,an antimetabolite,is frequently prescribed for various hemato-logical disorders,and its common side effects include gastrointestinal problems,cutaneous or mucosal lesions and pyrexia/*** SUMMARY This study reports the case of a 67-year-old woman who developed recurrent abdominal pain after 10 years of continuous hydroxyurea therapy for primary *** revealed an ileocecal *** discontinuing hydroxyurea therapy for 6 months,follow-up colonoscopy showed a significant reduction in the *** We consider cecal ulcers as a rare complication of hydroxyurea therapy which typically resolves upon stopping the drug.

关键词： Hydroxyurea Ulcer Abdominal pain Thrombocythemia Colonoscopy Case report

Microstructure of Fe-Based Alloy Composite Coatings Reinforced by Ti(C_(0.3)N_(0.7)) Particles Through Laser Cladding Technology

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 Iron and Steel Research International 2013年第8期20卷 78-82页

作者： QI Yong-tian cao Zhao-xia SHENG li-ying cao Run-ping Inner Mongolia Baotou Vocational and Technical College

Fe-based alloy layer reinforced by Ti（C,N） particles was produced on the surface of cast steel. X ray dif fraction （XRD） was used for phase identification in the composite coating. The microstructure of laser cladding layer was analyzed by means of optical microscope （OM）, electron probe microscope analyzer （EPMA）, scanning electron microscope （SEM） and transmission electron microscope （TEM）. The results show that Ti（C0.3 N0.7 ） particle is in-troduced by an in situ metallurgical reaction of TiN particle and graphite powder in the process of laser cladding. The shape of lots of Ti（C0.3 N0.7） particle is irregular. The sizes of Ti（C0. 3N0. 7） particles range from 0. 1 to 6.0 μm, and they are dispersed evenly in the matrix, which is fine dendritic or cellular crystal. A new kind of phase named Ti（C0.3 N0. 7 ） parti-cles are tightly bonded with α-Fe microstructure, and there is a clean and smooth phase interface between ceramic re-inforcement phase and the matrix.

关键词： Ti(C0.3 N0.7 ) particle TiN laser cladding microstructure

3D SLOPE STABIliTY ANALYSIS WITH KINEMATICAL ELEMENT TECHNIQUE

在线全文

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 1999年第2期9卷 218-222页

作者： cao, ping Gussmann, Peter Central South Univ of Technology Changsha China

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅａｎａｌｙｔｉｃａｌｏｂｊｅｃｔｏｆｓｌｏｐｅｓｔａｂｉｌｉｔｙｉｓｔｏｄｅｔｅｒｍｉｎｅｔｈｅｆａｃｔｏｒｏｆｓａｆｅｔｙ（Ｆｓ）ａｇａｉｎｓｔｓｌｉｄｉｎｇ，ｔｈｅｌｉｍｉｔｅｑ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅａｎａｌｙｔｉｃａｌｏｂｊｅｃｔｏｆｓｌｏｐｅｓｔａｂｉｌｉｔｙｉｓｔｏｄｅｔｅｒｍｉｎｅｔｈｅｆａｃｔｏｒｏｆｓａｆｅｔｙ（Ｆｓ）ａｇａｉｎｓｔｓｌｉｄｉｎｇ，ｔｈｅｌｉｍｉｔｅｑｕｉｌｉｂｒｉｕｍａｎａｌｙｓｉｓ...

关键词： kinematical element methodstability analysisthree dimensional slope

Thermal Entanglement in the Spin-S Heisenberg XYZ Model

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2014年第4期31卷 5-8页

作者： li Hu li Da-Chuang WANG Xian-ping YANG Ming cao Zhuo-liang School of Physics Material Science Anhui University Hefei 230039 School of Electronic and Information Engineering Hefei Normal University Hefei 230601 Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics University of Science and Technology of China Hefei 230026 Department of Physics Fuyang Teachers College Fuyang 236041

The thermal entanglement in the spin-S Heisenberg XYZ model is studied in detail by using the entanglement measure of negativity. The effects of spin on the thermal entanglement, the threshold temperature, the critical uniform external magnetic field, the nonuniform external magnetic field and the＇, entanglement extremum are discussed, respectively. It is shown that with increasing spin, the entanglement will increase, and then decrease slowly. In addition, we find that entanglement will approach a constant Nc with the increase of DM interaction, the constant increases with the increase of spin, and both the threshold temperature Tc and critical uniform external magnetic field Bc will increase with the increasing spin. Thus high-spin system can inhibit the influence of the external environment better.

关键词： SPIN-spin interactions HEISENBERG model MAGNETIC fields QUANTUM dots BOLTZMANN'S equation