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9篇 您的检索式:作者名="ZHENG Shijing"
    题名 作者 年代 出处 被引量
1Comparison of simple discectomy and instrumented posterior lumbar interbody fusion for treatment of lumbar disc herniation combined with Modic endplate changes显示文摘Cao Peng Chen Zhe Zheng Yuehuan Wang Yuren Jiang Leisheng Yang Yaoqi Zhuang Chengyu Liang Yu Zheng Tao Gong Yaocheng Zhang Xingkai Wu Wenjian Qiu Shijing 2014Chinese Medical Journal2014,,15:15
2Mechanism underlying the protective effect of Kaixin Jieyu Fang on vascular depression following cerebral white matter damage显示文摘The Chinese compound Kaixin Jieyu Fang can be used to treat vascular depression;however,the underlying mechanism remains unclear.This study established a rat model of chronic cerebral ischemia-caused white matter damage by ligation of the bilateral common carotid arteries.Rats received daily intragastric administration of a suspension of Kaixin Jieyu Fang powder.After 3,7and 21 days of treatment,the degree of white matter damage in the cerebral ischemia rat model was alleviated,Bcl-2 protein and mRNA expression in brain tissue increased,and Bax protein and mRNA expression decreased.These results indicate that Kaixin Jieyu Fang can alleviate cerebral white matter damage,and the underlying mechanism is associated with regulation of Bcl-2/Bax protein and mRNA expression,which is one of possible mechanism behind the protective effect of Kaixin Jieyu Fang against vascular depression.Ying Zhang Shijing Huang Yanyun Wang Junhua Pan Jun Zheng Xianhui Zhang Yuxia Chen Duojiao Li 2014Neural Regeneration Research2014,9,1:4
3Synthesis of a magnetic micro/nano Fe_xO_y-CeO_2 composite and its application for degradation of hexachlorobenzene显示文摘A micrometer-sized nanostructured,magnetic,ball-like FexOy-CeO2 composite was synthesized through an ethylene-glycol mediated process.The synthesized samples were characterized by scanning electron microscopy combined with energydisperse X-ray analysis,transmission electron microscopy and X-ray powder diffraction.In the synthesis system,polyethylene glycol (PEG) and urea were found to play significant roles in the formation of the micrometer-sized spherical architecture of the precursor.The details of morphology and particle size could be changed with the initial concentration of Fe(NO3)3-9H2O and Ce(NO3)3-6H2O as the reactants.The magnetic FexOy-CeO2 composite with a similar morphology was readily obtained by calcination from the precursor.The characterization of transmission electron microscopy showed the calcined ball-like architecture was a highly porous structure consisting of many nanoparticles.Because of the micrometer-sized nanostructure and the multi-components as well as the magnetism,the as-obtained FexOy-CeO2 composite showed better activity and potentially easy recovery for the harmless degradation of hexachlorobenzene (HCB).JIA ManKe,SU GuiJin,ZHENG MingHui,ZHANG Bing & LIN ShiJing State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China 2010Science China Chemistry2010,53,6:3
4Efficient catalytic removal of COS and H_(2)S over graphitized 2D micro-meso-macroporous carbons endowed with ample nitrogen sites synthesized via mechanochemical carbonization显示文摘Developing a suitable catalyst for the elimination of highly toxic carbonyl sulfide(COS)and hydrogen sulfide(H_(2)S) is of great significance in terms of industrial safety and environmental protection.We demonstrate here the facile synthesis of graphitized 2D micro-meso-macroporous carbons by one-step carbonization of a mixture of urea and glucose at 700–900℃.The as-synthesized graphitized catalysts,designated as 2DNHPC-x(x=urea/glucose mass ratio),are endowed with an ultra-high concentration(12.9–20.2 wt%)of stable and versatile nitrogen sites(e.g.pyrrole and pyridine)which are anchored on the surface via stable covalent bonding.As a result,the 2D-NHPC-x are active in catalytic hydrolysis of COS on pyrrolic N to H_(2)S,and the H_(2)S can be subsequently captured on pyridinic N and converted to elemental sulfur at ambient conditions over the same materials.Among the prepared catalysts,2D-NHPC-x can catalytically hydrolysize 91%of COS to H_(2)S at 30℃,whereas the conversion ratio over the common catalysts g-C_(3)N_(4)and Fe_(2)O_(3)are below 6.0%.Furthermore,these catalysts also exhibit H_(2)S conversion and sulfur selectivity of nearly 100%at 180℃with long-time durability,which is higher than those of the most reported carbonbased catalysts.In contrast,the H_(2)S capacities of activated carbon,ordered mesoporous carbons(OMC)and N-doped OMC are 3.9,1.5 and2.39 mmol g^(-1),respectively.Both the experimental and theoretical results are disclosed that 2D-NHPC-x are superior to the nitrogen-doped porous materials ever applied in simultaneous catalytic elimination of both COS and H_(2)S.Xun Kan Guanqing Zhang Yingying Luo Fujian Liu Yong Zheng Yihong Xiao Yanning Cao Chak-tong Au Shijing Liang Lilong Jiang 2022Green Energy & Environment2022,7,5:1
5Porous α-Fe_(2)O_(3)/SnO_(2) nanoflower with enhanced sulfur selectivity and stability for H_(2)S selective oxidation显示文摘Being abundant and active,Fe_(2)O_(3) is suitable for selective oxidation of H_(2)S.However,its practical application is limited due to the poor sulfur selectivity and rapid deactivation.Herein,we report a facile template-free hydrothermal method to fabricate porousα-Fe_(2)O_(3)/SnO_(2) composites with hierarchical nanoflower that can obviously improve the catalytic performance of Fe_(2)O_(3).It was disclosed that the synergistic effect betweenα-Fe_(2)O_(3) and SnO_(2) promotes the physico-chemical properties ofα-Fe_(2)O_(3)/SnO_(2) composites.Specifically,the electron transfer between the Fe^(2+)/Fe^(3+)and Sn^(2+)/Sn^(4+)redox couples enhances the reducibility ofα-Fe_(2)O_(3)/SnO_(2) composites.The number of oxygen vacancies is improved when the Fe cations incorporate into SnO_(2) structure,which facilitates the adsorption and activation of oxygen species.Additionally,the porous structure improves the accessibility of H_(2) S to active sites.Among the composites,Fe1 Sn1 exhibits complete H_(2) S conversion with 100%sulfur selectivity at 220℃,better than those of pureα-Fe_(2)O_(3) and SnO2.Moreover,Fe1 Sn1 catalyst shows high stability and water resistance.Xiaohai Zheng Jiaming Cai Wentao Zhao Shijing Liang Yong Zheng Yanning Cao Lijuan Shen Yihong Xiao Lilong Jiang 2021Chinese Chemical Letters2021,32,7:1
6Albumin-induced premature senescence in human renal proximal tubular cells and its relationship with intercellular fibrosis显示文摘The presence of senescent cells is associated with renal fibrosis.This study aims to investigate the effect of albumininduced premature senescence on tubulointerstitial fibrosis and its possible mechanism in vitro.Different concentrations of bovine serum albumim(BSA)with or without si-p21 are used to stimulate HK-2 cells for 72 h,and SA-β-gal activity,senescence-associated secretory phenotypes(SASPs),LaminB1 are used as markers of senescence.Immunofluorescence staining is performed to characterize the G2/M phase arrest between the control and BSA groups.Alterations in the DNA damage markerγ-H2AX,fibrogenesis,and associated proteins at the G2/M phase,such as p21,p-CDC25C and p-CDK1,are evaluated.Compared with those in the control group,the SA-β-gal activity,SASP,andγ-H2AX levels are increased in the BSA group,while the level of LaminB1 is decreased.Meanwhile,HK-2 cells blocked at the G2/M phase are significantly increased under the stimulation of BSA,and the levels of p21,p-CDC25C and p-CDK1,as well as fibrogenesis are also increased.When p21 expression is inhibited,the levels of p-CDC25C and p-CDK1 are decreased and the G2/M phase arrest is improved,which decreases the production of fibrogenesis.In conclusion,BSA induces renal tubular epithelial cell premature senescence,which regulates the G2/M phase through the CDC25C/CDK1 pathway,leading to tubulointerstitial fibrosis.Wen Lu Shijing Ren Wenhui Dong Xiaomin Li Zongji Zheng Yijie Jia Yaoming Xue 2022Acta Biochimica et Biophysica Sinica2022,54,7:1
7Synthesis of flower-like Co 3 O 4 –CeO 2 composite oxide and its application to catalytic degradation of 1,2,4-trichlorobenzene显示文摘Shijing Lin Guijin Su Minghui Zheng Dekun Ji Manke Jia Yexuan Liu 2012Applied Catalysis B: Environmental2012,,:1
8Oxygen vacancy defects engineering on Cu-doped Co_(3)O_(4) for promoting effective COS hydrolysis显示文摘The activation of H_(2)O is a key step of the COS hydrolysis,which may be tuned by oxygen vacancy defects in the catalysts.Herein,we have introduced Cu into Co_(3)O_(4) to regulate the oxygen vacancy defect content of the catalysts.In situ DRIFTS and XPS spectra reveal that COS and H_(2)O are adsorbed and activated by oxygen vacancy.The 10 at%Cu doped Co_(3)O_(4) sample(10Cu-Co_(3)O_(4))exhibits the optimal activity,100%of COS conversion at 70℃.The improved oxygen vacancies of CueCo_(3)O_(4) accelerate the activation of H_(2)O to form active -OH.COS binds with hydroxyl to form the intermediate HSCO^(-)_(2),and then the activated-OH on the oxygen vacancy reacts with HSCO^(-)_(2) to form HCO^(-)_(3).Meanwhile,the catalyst exhibits high catalytic stability because copper species(Cu+/Cu^(2+))redox cycle mitigate the sulfation of Co_(3)O_(4)(Co^(2+)/Co^(3+)).Our work offers a promising approach for the rational design of cobalt-related catalysts in the highly efficient hydrolysis COS process.Guanyu Mu Yan Zeng Yong Zheng Yanning Cao Fujian Liu Shijing Liang Yingying Zhan Lilong Jiang 2023Green Energy & Environment2023,8,3:0
9Saline Lacustrine Source Rocks and their Generated Gas Composition显示文摘Based on salinity,organic geochemical tests and gas generation simulations of mudstones,this paper has studied the effects of salinity on organic matter richness,types and thermal maturities and generatedLIU Chenglin ZHENG Shijing LI Haohan LIU Jun ZHANG Xuan 2014Acta Geologica Sinica(English Edition)2014,88,S1:0
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