|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Shexiang Tongxin dropping pill(麝香通心滴丸)protects against sodium laurate-induced coronary microcirculatory dysfunction in rats显示文摘OBJECTIVE:To investigate the protective effects of Shexiang Tongxin dropping pill(麝香通心滴丸,STDP)in a rat model of coronary microcirculatory dysfunction(CMD).METHODS:Sprague-Dawley rats were allocated randomly into four groups:sham,CMD model,STDP,and nicorandil.After 4 weeks of treatment,CMD was induced by injection of sodium laurate(0.2 m L,2 g/L)into the left ventricle while obstructing the ascending aorta.Rats in the sham group underwent an identical surgical procedure but were administered physiological(0.9%)saline(0.2 m L).Twenty-four hours after surgery,blood samples were collected for biochemical analyses and enzyme-linked immunosorbent assays.Heart tissues were removed for histopathology staining;apoptosis and inflammatory cytokines were examined by Western blotting.RESULTS:The STDP group had a lower level of creatine kinase-myocardial band,lactate dehydrogenase,and cardiac troponin-I than that in the CMD model group.Infiltration of inflammatory cells,myocardial ischaemia,and microthrombosis were relieved in the STDP group compared with CMD model group.Levels of endothelin-1,nuclear factor-kappa B,tumour necrosis factor-α,interleukin-6,interleukin-1β,malondialdehyde,B-cell lymphoma(Bcl)-2-associated X protein,and caspase-3 were lower,and levels of nitric oxide,Bcl-2,and superoxide dismutase were higher,in the STDP group in comparison with the CMD model group.CONCLUSION:STDP pretreatment improved the CMD induced by sodium laurate via anti-inflammatory,anti-apoptosis,and anti-oxidant mechanisms. | LIU Huahua ZHAO Jingjing ZHU Yeke TANG Weiliang PENG Fang PAN Sunlei FU Guosheng | 2021 | Journal of Traditional Chinese Medicine2021，41，1： | 6 |
| 2 | Effect of impregnation strategy on catalytic hydrogenation behavior of PtCo catalysts supported on La2O2CO3 nanorods显示文摘Small Pt and Pt-Co nanoparticles(NPs) stabilized on La_2 O_2 CO_3 nanorods(LOC) were prepared by wet impregnation method,and probed in liquid-phase chemoselective hydrogenation of crotonaldehyde(CRAL) to crotyl alcohol(CROL).It is found that incorporation of Co atoms into Pt catalyst significantly improves the hydrogenation activity and desired selectivity to CROL as it destroys the Pt-lanthanum interfaces and results into the formation of Pt-Co particles.In addition,a close examination of catalyst surface and reactive performance suggests that the impregnation sequence of Pt and Co exerts great influence on the physicochemical property and the catalytic hydrogenation behavior of PtCo/LOC catalysts.As a result of the interaction between Pt and Co species,high alloying degree of Pt-Co NPs is obtained in the co-impregnated catalyst(Pt-Co/LOC),thus achieving the highest hydrogenation activity.The selective deposit of Co atoms onto the low-coordinated Pt sites leads to the smallest metal particle size and high dispersion of Pt-Co NPs over the Pt/Co/LOC,giving rise to the highest selectivity and yield to CROL. | Fengjun Hou Huahua Zhao Huanling Song Lingjun Chou Jun Zhao Jian Yang Liang Yan | 2018 | Journal of Rare Earths2018，36，9： | 4 |
| 3 | A missing link of the Proto-Tethys Ocean between the Qinling and Qilian orogens,China:Insights from geochronology and structural geology显示文摘The Qinling-Qilian connection zone(QQCZ)is a key area to reveal the relationship and to make a link of the North Qinling and the North Qilian orogens,China.Here we present U-Pb dating data of detrital zircons from four sedimentary/metasedimentary rocks in the QQCZ and the southwestern North China Block(NCB)and detailed regional structural data.Three episodes of fold deformation(D1,D2 and D3)are distinguished in the QQCZ,with the former two occurred during the early Paleozoic.The D1 deformation is mainly characterized by regionally penetrative schistosity and some residual rootless intrafolial folds due to the intensive superpositions by the subsequent D2 and D3 deformations.The D2 deformation characterized by tight folds,associated axial plane foliations and crenulation lineations indicates a stress field characterized by NNE-SSW-directed compression,which may be induced by the collision between the NCB and the southern blocks.The D3 deformation which might occur during the Mesozoic is marked by upright open folds and kink bands.The similarity of the detrital zircon age spectra of the Huluhe Group in the North Qilian Orogen and the Erlangping Group in the North Qinling Orogen suggests that the two groups have similar provenance,which may indicate that the North Qilian Orogen corresponded to the North Qinling Orogen in a regional tectonic framework.In addition,the remarkable age peak at^435 Ma of the detrital zircon age spectrum of the Duanjiaxia Formation in the southwestern NCB indicates that this formation obtained the provenance of the North Qilian and North Qinling orogens,which may be generated by the collage of the southwestern NCB and the QQCZ during the Late Ordovician-Early Silurian.Based on structural,detrital zircon and metamorphic data,we suggest that the North Qilian and North Qinling orogens underwent similar evolution during the early Paleozoic due to the closure of the North Qilian and the Kuanping oceans which located at the northern boundary of the Proto-Tethys Ocean. | Shujuan Zhao Sanzhong Li Huahua Cao Xiyao Li Xin Liu Shengyao Yu Xiaoyu Guo | 2020 | Geoscience Frontiers2020，11，5： | 2 |
| 4 | Synthesis and catalytic application in isobutane dehydrogenation of the mesoporous chromia/alumina catalysts based on a metal-organic framework显示文摘 | Huahua Zhao Huanling Song Lingjun Chou | 2013 | Microporous and Mesoporous Materials2013，，： | 1 |
| 5 | SJES14110700139313显示文摘 | Jun Zhao Huahua Dun | 2014 | Engineering Structures2014，，： | 1 |
| 6 | Isobutane dehydrogenation over the mesoporous Cr2O3/Al2O3 catalysts synthesized from a metal-organic framework MIL-101显示文摘 | ZHAO Huahua SONG Huanling XU Leilei | 2013 | Applied Catalysis A:General2013，456，： | 1 |
| 7 | Role of cerium dopants in MoVNbo multi-metal oxide catalysts for selective oxidation of ethane显示文摘The effect of Ce on the structure of MoVNbCeO multi-metal oxide catalysts and the performance of ethane selective oxidation was investigated.These multi-metal oxide catalysts with superior oxidizability exhibit high catalytic activity,and vanadium acts as the active center for ethane oxidation reaction.The improved catalytic activity is related to the increased V^(5+) content on the catalyst surface,which results from the enhanced transformation of the electrons between V and Ce.Moreover,Ce effectively promotes oxygen adsorption,activation,and mobility.And the presence of Ce can also prevent MoO_(3) formation and stabilize the Mo_(5)O_(14)-like structure.In addition,the catalyst with a moderate amount of Ce exhibits outstanding catalytic performance.Especially,the MVN-Ce catalyst with a Ce/V ratio of 0.1 exhibits the best performance:the total selectivity of the catalyst toward C_(2)H_(4) and CH_(3) COOH is the highest(72%) at the ethane conversion of 31%.Therefore,MoVNbCeO multi-metal oxides are promising candidates for selective oxidation. | Baohua Liu Liang Yan Huahua Zhao Jian Yang Jun Zhao Huanling Song Lingjun Chou | 2022 | Journal of Rare Earths2022，40，5： | 1 |
| 8 | A restoring force model for steel fiber reinforced concrete shear wails 显示文摘 | Zhao Jun Dun Huahua | 2014 | Engineering Struc- tures2014，75，： | 1 |
| 9 | Isobutane dehydrogenation over chromia alumina catalysts prepared from MIL-101: Insight into chromium species on activity and selectivity显示文摘Various mesoporous chromia alumina catalysts were prepared by five different methods based on a metal-organic framework MIL-101 and their catalytic performances over isobutane dehydrogenation were investigated. The highly dispersed chromium species were produced on catalyst KCr Al-I1 with largest specific surface area of 198 m2 g-1prepared with aluminium isopropoxide(Al(i-OC3H7)3) by ultrasonic impregnation method. However, the catalyst KCr Al-I2 synthesized by stirring impregnation possessed crystalline α-Cr2O3 phase, which was poorly dispersed. Two types of Cr-rich and Al-rich Crx Al2-xO3 solid solutions, designated as Cr Al-I and Cr Al-II phase, were formed over the catalysts KCr Al-I3(prepared by Al(i-OC3H7)3with nitric acid regulation), KCr Al-C4(prepared by aluminium chloride hexahydrate) and KCr Al-N5(prepared by aluminium nitrate nonahydrate). Catalytic evaluation results revealed that KCr Al-I1 exhibited the high isobutane conversion due to its highly dispersed chromium species. However, KCr Al-I3, KCr Al-C4 and KCr Al-N5 showed the higher isobutene selectivity(95.2%-96.4%) on account of the formation of chromia alumina solid solutions in the catalysts. Moreover, the solid solution over the chromia alumina catalysts could greatly suppress the coke formation. | Huahua Zhao Huanling Song Zhichao Miao Lingjun Chou | 2014 | Journal of Energy Chemistry2014，23，6： | 1 |
| 10 | Isobutane dehydrogenation over the mesoporous Cr203/Al:O3 catalysts synthesized from a metal-organic framework MIL-101 显示文摘 | Zhao Huahua Song Huanling Xu Leilei | 2013 | ApplCatal A2013，456，： | 1 |
| 11 | Modification of HDPE filling with pelagic clay显示文摘In order to improve the properties of HDPE, the authors used the method of suspended diffusion for purification the pelagic clay,used silane coupling agent to increase its organic activation, and prepared the composites of organic pelagic clay/HDPE by melting them in different conditions. The affections of process conditions and quantity of pelagic clay to the properties of composites were analyzed by testing their mechanical properties, thermo stability and barrier properties. According to test the structure of composites,it is indicated that pelagic clay has good compatibility with HDPE. The result shows that the pelagic clay can improve mechanical properties, thermo stability and barrier properties of HDPE properties effectively. | ZHAO Liang ZHANG Peiping ZHANG Dongli LIU Xuesong LU Huahua | 2010 | Global Geology2010，13，2： | 0 |
| 12 | Catalytic behavior of Mo-Bi-Fe-Co-K-M-O(M=Ce,Gd,CeGd)catalysts for selective oxidation of isobutene显示文摘The further improvement of methacrolein(MAL)selectivity from isobutene(IB)oxidation is crucial and challenging.In this study,based on the typical Mo-Bi-Fe-Co-K-O mixed metal oxide,the rare earth element Gd-doped,Ce-doped and CeGd co-doped catalysts were prepared by co-precipitation strategy to increase the selectivity of MAL from 47.9%to 49.8%,64.2% and 68.6%,respectively.In order to elucidate in-depth the promoting effect of Ce and/or Gd,various characterizations were utilized including X-ray diffraction patterns(XRD),Raman,X-ray fluorescence spectrometry(XRF),X-ray photoelectron spectroscopy(XPS),O_(2)-temperature programmed desorption(O_(2)-TPD),H2-temperature programmed reduction(H2-TPR),CO_(2)-temperature programmed desorption(CO_(2)-TPD),IB-temperature programmed desorption(i-C4-TPD)and in-situ IB-Fourier transform infrared spectroscopy(IB-FTIR).Both Ce and Gd finely regulate the bulk and surface structure of the catalyst,thus altering the redox ability,oxygen mobility and storage ability and basicity.Compared with Ce,Gd addition slightly regulates the variation of Co^(2+)/Co^(3+)redox couples,greatly enhances the interaction among the components on the catalyst,thus only increases the content of surface oxygen species and has little effect on their mobility.While Cecontaining catalyst performs stronger oxygen storage and migration ability,thus leading to the overproduction of surface Odefectspecies,which are proposed to be the active sites for the production of MAL and COx.The CeGd co-doped catalyst possesses the proper content of surface Odefectspecies,thus exhibits much higher MAL selectivity.Moreover,the promoting mechanism of Ce and/or Gd over IB oxidation is proposed.Therefore,this work is helpful for understanding the influence of rare earth elements on the structure of mixed metal oxides and the olefin selective oxidation reaction. | Qinghui Li Huahua Zhao Jian Yang Jun Zhao Liang Yan Huanling Song Lingjun Chou | 2024 | Journal of Rare Earths2024，42，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员