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Flaxseed Lignans Promoted the Growth of Skeletal Muscle in Male Rats and Its Possible Mechanism

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Agricultural Sciences in China 2009年第12期8卷 1511-1516页

作者： zhou wei WANG guo-jie HAN Zheng-kang Key Laboratory of Animal Physiology and Biochemistry Ministry of Agriculture/Nanjing Agricultural University Nanjing 210095 P. R. China

This study was aimed to determine whether flaxseed lignans could affect the growth of skeletal muscle in male animals and its possible mechanisms. The impact of flaxseed lignans on the skeletal muscle in male rats was determined in vivo. Flaxseed lignans （50 ppm） and daidzein （5 ppm） were added into the basal diets, respectively. The concentrations of serum lignans and daidzein were measured by high performance liquid chromatography （HPLC）, and the serum growth hormone and testosterone （T） levels were analyzed by radioimmunoassay （RIA）, and the expression of estrogen receptor β （ER β） in the soleus muscle and hypothalamus were determined by reverse-transcription polymerase chain reaction （RT-PCR）. Flaxseed lignans and daidzein could significantly improve the feed efficiency and facilitate the weight gain of the femoral muscle in male rats. The ratio of RNA to DNA in the muscles and serum T levels was remarkably increased, whereas, the urea nitrogen concentrations were significantly decreased by flaxseed lignan and/or its metabolites and daidzein. Meanwhile, the expression of ER β in soleus muscle and hypothalamus were both upgraded by the two phytoestrogens. Flaxseed lignan promoted the growth of male rats, and it might be by regulating serum T levels by binding to ER β in the hypothalamus. In turn, it depressed the catabolism of protein and promoted the hypertrophy of skeletal muscle ceils.

关键词： phytoestrogens flaxseed lignans daidzein mammalian lignans skeletal muscle growth

Selective hydrogenation of benzene to cyclohexene on Ru-based catalysts promoted with Mn and Zn

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Journal of Natural Gas Chemistry 2011年第1期20卷 53-59页

作者： Xiaoli zhou Haijie Sun wei guo Zhongyi Liu Shouchang Liu Department of Chemistry Zhengzhou University Zhengzhou 450001 Henan China

Ru-based catalysts promoted with Mn and Zn were prepared by a co-precipitation method. In liquid-phase hydrogenation of benzene, the Ru-Mn-Zn catalysts exhibited superior catalytic performance to the catalysts promoted with Zn or Mn alone. The optimum Mn/Zn molar ratio was determined to be 0.3. With the addition of 0.5 g NaOH, the Ru-Mn-Zn-0.3 catalyst, which was reduced at 150 ？ C, afforded a cyclohexene selectivity of 81.1% at a benzene conversion of 60.2% at 5 min and a maximum cyclohexene yield of 59.9% at 20 min. Based on characterizations, the excellent performance of Ru-Mn-Zn catalyst was ascribed to the suitable pore structure, the appropriate reducibility and the homogenous chemical environment of the catalyst.

关键词： benzene selective hydrogenation cyclohexene ruthenium manganese zinc

装配式玻璃钢复合材料路基边坡防排设施施工技术研究

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价值工程 2024年第4期43卷 137-139页

作者：周国伟杨澜徐肃函河南安罗高速公路有限公司信阳464200 华北水利水电大学郑州450045 河南中天交通设施研发有限公司郑州451472

为解决传统混凝土公路路基边坡结构施工缓慢、耐久性差、构件“粗笨厚重”的问题,以河南安罗高速公路为依托,结合玻璃钢复合材料,通过技术创新、施工工艺和结构设计等研究装配式路基边坡六棱块、拱形骨架和急流槽等构件在公路工程中的... 详细信息

为解决传统混凝土公路路基边坡结构施工缓慢、耐久性差、构件“粗笨厚重”的问题,以河南安罗高速公路为依托,结合玻璃钢复合材料,通过技术创新、施工工艺和结构设计等研究装配式路基边坡六棱块、拱形骨架和急流槽等构件在公路工程中的应用。研究成果可形成成套的公路路基边坡结构生产与新施工工艺,减少施工现场作业人员,有效提升工程品质,为玻璃钢复合材料小型预制构件在工程上的应用提供新方向。

关键词：装配式路基施工技术玻璃钢

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Effects of Mo on the Microstructure and Hydrogen Sorption Properties of Ti-Mo Getters

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Chinese Journal of Aeronautics 2007年第2期20卷 172-176页

作者： zhou Hong-guo wei Xiu-ying MAO Chang-hui XIONG Yu-hua QIN Guang-rong Institute of the Advanced Electronic Materials Beijing General Research Institute for Non Ferrous Metal Beijing 100088 China

The effects of Mo on the microstructure evolution, porosity and hydrogen sorption properties of Ti-Mo getters are investigated in this work. The results show that the addition of Mo prolongs the densification process of Ti-Mo getters and results in a significant amount of sintered pores. With the Mo content increasing, the porosity of getters firstly increases reaching the maximum value as it attains about 7.5wt.%, and then drops. At the room temperature, the hydrogen sorption property of getters increases progressively with the Mo content increasing, but the tendency is not very clear before its content lies below 2.5wt.%. When the Mo content achieves about 7.5wt.%, the hydrogen sorption property proves to be the best. The discussion is made about the above mentioned phenomena inclusive of hydrogen sorption properties of getters under different activation conditions （from 500-750℃）.

关键词： Ti-Mo getter powder metallurgy microstructure hydrogen sorption property

Engineering vascularized organotypic tissues via module assembly

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International Journal of Extreme Manufacturing 2024年第1期6卷 155-175页

作者： Zhenzhen zhou Changru Liu Yuting guo Yuan Pang wei Sun Biomanufacturing Center Department of Mechanical EngineeringTsinghua UniversityHaidian DistrictBeijing 100084People’s Republic of China Biomanufacturing and Rapid Forming Technology Key Laboratory of Beijing Beijing 100084People’s Republic of China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationBeijing 100084People’s Republic of China Department of Mechanical Engineering Drexel UniversityPhiladelphiaPA 19104United States of America

Adequate vascularization is a critical determinant for the successful construction and clinical implementation of complex organotypic tissue models. Currently, low cell and vessel density and insufficient vascular maturation make vascularized organotypic tissue construction difficult,greatly limiting its use in tissue engineering and regenerative medicine. To address these limitations, recent studies have adopted pre-vascularized microtissue assembly for the rapid generation of functional tissue analogs with dense vascular networks and high cell density. In this article, we summarize the development of module assembly-based vascularized organotypic tissue construction and its application in tissue repair and regeneration, organ-scale tissue biomanufacturing, as well as advanced tissue modeling.

关键词： vascularized organotypic tissue module assembly regenerative medicine tissue engineering

In situ embedded bismuth nanoparticles among highly porous carbon fibers for efficient carbon dioxide reduction

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Rare Metals 2024年第9期43卷 4312-4320页

作者： wei-Jian guo Ao zhou Wen-Wen Cai Jin-Tao Zhang Key Laboratory for Colloid and Interface Chemistry(Ministry of Education) School of Chemistry and Chemical EngineeringShandong UniversityJinan 250100China

Electrocatalysis provides an optimal approach for the conversion of carbon dioxide(CO_(2))into high-value chemicals,thereby presenting a promising avenue toward achieve carbon ***,addressing the selectivity and stability challenges of metal catalysts in electrolytic reduction remains a daunting *** this study,the electrospinning method is employed to fabricate porous carbon nanofibers loaded with bismuth nanoparticles with the help of in situ *** porous carbon nanofibers as conductive support would facilitate the dispersion of bismuth active sites while inhibiting their aggregation and promoting the mass transfer,thus enhancing their electrocatalytic activity and ***,nitrogen doping induces electron delocalization in bismuth atoms through metal-support interactions,thus enabling efficient adsorption of intermediates for improving selectivity based on the theoretical ***,Bi@PCNF-500 exhibits the exceptional selectivity and stability across a wide range of potential ***,its faradaic efficiency(FE)of formate reaches 92.7%in H-cell and94.9%in flow cell,respectively,with good electrocatalytic *** in situ characterization and theoretical calculations elucidate the plausible reaction mechanism to obtain basic rules for designing efficient electrocatalyst.

关键词： Porous carbon nanofiber N-doping Electron delocalization Carbon dioxide reduction

Synthesis and Structural Characterization of a New One-dimensional Infinite Chain of Silver(I) Complex with Triphenylphosphine

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Chinese Journal of Structural Chemistry 2004年第6期23卷 547-550页

作者： LIUBing zhouguo-wei FUMing-Lai CAILi-Zhen guoguo-Cong HUANGJin-Shun StateKeyLaboratoryofStructuralChemistry FujianInstituteofResearchontheStructureofMatterTheChineseAcademyofSciencesFuzhouFujian350002China GraduateSchooloftheChineseAcademyofSciences Beijing100039China

The reaction of triphenylphosphine with AgNO3 yielded an unusual nitrate anion bridging one-dimensional infinite chain [Ag(PPh3)NO3] in which the silver(I) atom is three-coordinated by one P atom of triphenylphosphine and two O atoms of two bridging nitrate anions to form a scalene triangle. The complex [Ag(PPh3)NO3] crystallizes in the monoclinic system, space group P21/c with a = 10.281(2), b = 18.596(5), c = 9.180(2) , = 90.60(1), V = 1755.1(7) 3, Z = 4, Mr = 432.15, Dc = 1.635 g/cm3, F(000) = 864 and = 1.254 mm-1. The final R = 0.0606 and wR = 0.1400 for 2188 observed reflections with I > 2(I) out of 3057 unique ones (Rint = 0.0539). IR and elemental analysis of the complex are characterized.

关键词： silver triphenylphosphine infinite chain organic hybrid crystal structure

Coefficients of earth pressure at rest in thick and deep soils

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Mining Science and Technology 2009年第2期19卷 252-255页

作者： TIAN Qiu-hong XU Zhi-wei zhou guo-qing ZHAO Xiao-dong HU Kun State Key Laboratory for Geomechanics ＆ Deep Underground Engineering School of Architecture and Civil Engineering China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

The effect of test methods and stress paths on the experimental value of the coefficient of earth pressure at rest, K0, was investigated under high pressures. The results indicate that the rigid pressure chamber and flexible lateral confining pressure medium method gives a stress ratio at the initial stage that is not the real K0. Moreover, K0 increases during the loading process becoming greater at high pressures. In the unloading process, however, K0 increases only at the initial stage but decreases thereafter. In addition, the incremental magnitude definition, K0=dσ3/dσ1, gives higher values than the total magnitude definition, K0=σ3/σ1, under loading. This is also true during initial stages of unloading. The experiment results also indicate that earth pressure at rest in deep and thick soils can be estimated by a power function of axial and confining pressures. It is necessary to choose the appropriate Kn to avoid some accidents.

关键词： experimental research earth pressure at rest loading and unloading paths thick and deep soils

Cardiac infiltration of diffuse large B-cell lymphoma manifesting as sustained ventricular tachycardia:a case report

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Journal of Geriatric Cardiology 2024年第2期21卷 242-245页

作者： wei CHEN Kun HUANG wei-wei guo Fan zhou De-Ning LIAO Department of Cardiology Shanghai Jingan District Zhabei Central HospitalShanghaiChina Department of Cardiology Shanghai Changzheng HospitalShanghaiChina Department of Hematology Shanghai Jingan District Zhabei Central HospitalShanghaiChina

Cardiac tumors are ***,cardiac metastases can occur in up to 10%of patients with *** cardiac neoplasms,metastases are much more common than primary cardiac tumors.[1]Metastatic cardiac neoplasms most frequently metast... 详细信息

关键词： neoplasms sustained cardiac