维普中文期刊产品整合服务
8篇 您的检索式:作者名="ZHANG Zengzhi"
    题名 作者 年代 出处 被引量
1Recombinant osteopontin attenuates hyperoxia-induced acute lung injury through inhibiting nuclear factor kappa B and matrix metalloproteinases 2 and 9显示文摘Zhang Xiangfeng Liu Fen Zhu Guangfa Wang Zengzhi 2014Chinese Medical Journal2014,,23:4
2Preparation and characterization of carbon pillared clay material显示文摘Carbon pillared clay material was prepared from montmorillonite modified by C19H42BrN and C10H16ClN. SEM, FT-IR, XRD, N2 adsorption-desorption, thermal-gravimetric analysis and differential scanning calorimetry were employed to characterize the pore structure and test the effect of surfactant. The results show that organic modifier combines with montmorillonite particles by covalent bond and ion embedded. The microstructure of carbon pillared material looks like needle slice. The most probable pore size distribution is about 1.7 nm. The clay material slice mainly consists of two-dimensional aperture supported by a carbonization pillar. The high-temperature stability of carbon pillared clay is im- proved.ZHANG ZengZhi YANG ChunWei NIU JunJie 2009Science China(Technological Sciences)2009,52,1:2
3Comfort evaluation and position parameter optimization of the steering wheel in agricultural machinery based on a three-level evaluation index system显示文摘The aim of this study is to evaluate the comfort and optimize the position parameters of steering wheel.Taking the H point of driver as the reference point,three position parameters of steering wheel were determined,which were used as experimental factors.A comprehensive evaluation index system of the comfort was established.The comfort range and optimal levels of three parameters were determined by a single factor test,based on which a response surface optimization and validation test was carried out.The optimization and validation test results show that the expected comprehensive score of the comfort is 0.864,and the average relative error between the predicted and the measured value is 4.18%,indicating that the optimization results are reliable.The findings can provide reference for the comfort optimization design of steering wheel in agricultural devices.Qichao Wang Yujun Shang Zengzhi Qin Hongmei Xu Wei Jiang Hang Li Guozhong Zhang 2022International Journal of Agricultural and Biological Engineering2022,15,4:1
4Methane absorption and application of mixed organic aggregate prepared from Span80 and alkaline salt显示文摘The water-based materials for mine gas absorption and explosion suppression were prepared, in which the mixed organic aggregate of Span80 and alkaline salt can be used as methane absorbent. Methane was used as a model of mine gas, and the absorptions of methane with different complex materials were studied using head space gas chromatography. Then the state of aqueous material was characterized with laser light scattering instrument and the effects of different complex materials on explosion suppression were preliminarily studied in explosion chamber which can simulate mine gas explosion. The research results showed that complex material could absorb methane and there was some corre- lation between the mean diameter of organic aggregate in aqueous material and the absorption effect. Additionally, the aqueous material could suppress the methane explosion to some degree. The material can absorb mine gas in atomization condition, therefore, degrease mine gas concentration and influence the distribution of mine gas in the space, and then suppress the mine gas explosion to some extent.ZHANG ZengZhi GU Na CAO Lei SHU XinQian 2009Science China(Technological Sciences)2009,52,8:1
5Preparation and Water Retention Properties of Montmorillonite Modified by EL-10 Emulsifying Agent显示文摘Aiming at the problem of available water conservation in desertification ecological restoration, we prepared the water retention materials with montmorillonite(MMT) modified by Castor Oil Polyoxyethylene Ether(10)(EL-10) emulsifying vegetable waxes. The water retention property was studied in simulated desertification climate, and the materials were analyzed and characterized by UV-Vis, SEM, FTIR and XRD measurements. Moreover, a UV carbon arc lamp was used to test the resistance to aging. The experimental results show that the emulsion has good dispersity. Both the water retention property and the aging resistance performance of the modified clay were excellent. The lamellar structure and chemical composition of MMT had no obvious changes before and after modification. The surfaces of clay particles were coated uniformly with modified MMT, so the loose clay particles were cemented together by vegetable waxes. Meanwhile, the original big hydrophilic pores between the clay particles turned into capillary hydrophobic pores. So the clay particles formed a bonding layer which could inhibit water evaporation. Grass-planting experiment showed that reasonable mass ratio of vegetable waxes and EL-10 was 1:18. The materials not only had great water retention property but also maintained sound air permeability so that the germination rate of grass seed significantly increased from 8% to 52%.渠永平 zhang zengzhi li cuilan 2017Journal of Wuhan University of Technology(Materials Science)2017,32,4:1
6The effect of surface-free energy and microstructure on the condensation mechanism of water vapor显示文摘Obtaining high-water-yield drinking water in arid areas without consuming energy is still a global challenge.Since water vapor is ubiquitous,atmospheric water harvesting technologies are undoubtedly one of the most promising candidates.A typical water condensation process is analyzed in this paper(nucleation,self-growth,coalescence and sliding).The mechanisms of interactions between adsorbate and water vapor are discussed.The effect of surface-free energy and microstructure on water vapor condensation is described.Finally,the main problems in developing more efficient,high-water-mass and high-cycle-stability atmospheric water collectors are summarized,and the future development trend has been prospected.Shangsheng Zhang Shuman Xu Yang Liu Ruicheng Lei Tianli Guo Yao Yao Shangyu Gao Jun Ding Zengzhi Zhang 2023Progress in Natural Science:Materials International2023,33,1:0
7Core-shell-embedded Mesoporous Silica Capsules for Atmospheric Water Harvesting显示文摘A one-step ultrasonic mechanical method was used to synthesize a kind of atmospheric water harvesting material with high water harvesting performance in a wide relative humidity(RH)range,especially at low RH(RH<40%),namely,mesoporous silica capsule(MSC)with core-shell structure.Transmission electron microscopy(TEM),nitrogen adsorption and other characterization techniques were used to study the formation process of nano-microspheres.A new mechanism of self-adaptive concentration gradient regulation of silicon migration and recombination core-shell structure was proposed to explain the formation of a cavity in the MSC system.The core-shell design can enhance the specific surface area and pore volume while maintaining the monodispersity and mesoporous size.To study the water harvesting performance of MSC,solid silica nanoparticles(SSN)and mesoporous silica nanoparticles(MSN)were prepared.In a small atmospheric water collection test(25℃,40%RH),the water vapour adsorption and desorption kinetics of MSC,SSN,MSN and a commercial silica gel(CSG)were compared and analyzed.The results show that the MSC with mesoporous channels and core-shell structure can provide about 0.324 gwater/gadsorbent,79%higher than the CSG(0.181 gwater/gadsorbent).It is 25.1%higher than that of 0.259 gwater/gadsorbentof un-hollowed MSN and 980%higher than that of0.03 gwater/gadsorbentof un-hollowed SSN.The material has a large specific surface area and pore volume,simple preparation method and low cost,which provides a feasible idea for realising atmospheric water collection in arid and semi-arid regions.ZHANG Shangsheng XU Shuman LEI Ruicheng PAN Yuliang MA Tao ZHANG Zheng LIU Chunsheng ZHANG Zengzhi 2023Journal of Wuhan University of Technology(Materials Science)2023,38,5:0
8Serum Resistin Levels in Adult Patients with Nonalcoholic Fatty Liver Disease:A Systematic Review and Meta-analysis显示文摘Background and Aims:Previous studies reported that serum resistin levels were remarkably changed in patients with nonalcoholic fatty liver disease(NAFLD)but the conclusions were inconsistent.The aim of this study was to investigate accurate serum resistin levels in adult patients with NAFLD.Methods:A complete literature research was conducted in the PubMed,Embase,and Cochrane Library databases,and all the available studies up to 7 May 2020 were reviewed.The pooled standardized mean difference(SMD)values were calculated to investigate the serum resistin levels in patients with NAFLD and healthy controls.Results:A total of 28 studies were included to investigate the serum resistin levels in patients with NAFLD.Patients with NAFLD had higher serum resistin levels than controls(SMD=0.522,95%confidence interval[CI]:0.004–1.040,I2=95.9%).Patients with nonalcoholic steatohepatitis(NASH)had lower serum resistin levels than the healthy controls(SMD=−0.44,95%CI:−0.83–0.55,I2=74.5%).In addition,no significant difference of serum resistin levels was observed between patients with NAFL and healthy controls(SMD=−0.34,95%CI:−0.91–0.23,I2=79.6%)and between patients with NAFL and NASH(SMD=0.15,95%CI:−0.06–0.36,I2=0.00%).Furthermore,subgroup and sensitivity analyses suggested that heterogeneity did not affect the results of meta-analysis.Conclusions:This meta-analysis investigated the serum resistin levels in adult patients with NAFLD comprehensively.Patients with NAFLD had higher serum resistin levels and patients with NASH had lower serum resistin levels than healthy controls.Serum resistin could serve as a potential biomarker to predict the development risk of NAFLD.Dongli Han Jie Chen Shousheng Liu Zengzhi Zhang Zhenzhen Zhao Wenwen Jin Yongning Xin 2021Journal of Clinical and Translational Hepatology2021,9,4:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费