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| 1 | Photoreduction of CO_2 to methanol over Bi_2S_3/CdS photocatalyst under visible light irradiation显示文摘The Bi2S3,CdS and Bi2S3/CdS photocatalysts were prepared by direct reactions between their corresponding salt and thiourea in a hy- drothermal autoclave.The photocatalytic activities of these photocatalysts for reducing CO2 to CH3OH under visible light irradiation have been investigated.The results show that the photocatalytic activity and visible light response of Bi2S3 are higher than those of CdS.The Bi2S3 modification can enhance the photocatalytic activity and visible light response of CdS.The photocatalytic activity of Bi2S3/CdS hetero-junction photocatalyst was the highest and the highest yields of methanol was 613μmol/g when the weight proportion of Bi2S3 to CdS was 15%,which was about three times as large as that of CdS or two times of that of Bi2S3. | Xin Li Juntao Chen Huiling Li Jingtian Li Yitao Xu Yingju Liu Jiarong Zhou | 2011 | Journal of Natural Gas Chemistry2011，20，4： | 11 |
| 2 | Analyses of nitrobenzene, benzene and aniline in environmental water samples by headspace solid phase micro-extraction coupled with gas chromatography-mass spectrometry显示文摘A headspace solid phase microextrac- tion coupled with gas chromatography mass spec- trometry (HS-SPME/GC-MS) method was estab- lished for analyzing nitrobenzene, benzene and ani- line in environmental water samples simultaneously. Factors affecting extraction efficiency (SPME fiber selection, acidity, temperature, salt addition, extrac- tion time, headspace, etc) were verified. Under opti- mal extraction conditions, the detection limits are 0.50, 0.11 and 1.00 μg/L for nitrobenzene, benzene and aniline, respectively. The results indicate that this method is capable of making sensitive and accuracy analyses on nitrobenzene, benzene and aniline in environmental water samples. | CHEN Ming YIN Yongguang TAI Chao ZHANG Qinghua LIU Jiyan HU Jingtian JIANG Guibin | 2006 | Chinese Science Bulletin2006，51，13： | 8 |
| 3 | Mechanism and kinetics study on the ozonolysis reaction of 2,3,7,8-TCDD in the atmosphere显示文摘The ozonolysis of 2,3,7,8-tetra-chlorodibenzo-p-dioxin(2,3,7,8-TCDD) is an efcient degradation way in the atmosphere. The ozonolysis process and possible reactions path of Criegee Intermediates with NO and H2 O are introduced in detail at the method of MPWB1K/6-31+G(d,p)//MPWB1K/6-311+G(3df,2p) level. In ozonolysis, H2O is an important source of OH radical formation and initiated the subsequent degradation reaction. The Rice-Ramsperger-Kassel-Marcus(RRKM) theory was applied to calculate rate constants with the temperature ranging from 200 to 600 K. The rate constant of reaction between 2,3,7,8-TCDD and O3 is 4.80 × 10 20cm3/(mole·sec) at 298 K and 760 Torr. The atmospheric lifetime of the reaction species was estimated according to rate constants, which is helpful for the atmospheric model study on the degradation and risk assessment of dioxin. | Jing Bai Xiaomin Sun Chenxi Zhang Chen Gong Jingtian Hu Jianghua Zhang | 2014 | Journal of Environmental Sciences2014，26，1： | 6 |
| 4 | SOD1^(G93A) Induces a Unique PSAP-Dependent Mitochondrial Apoptosis Pathway via Bax-Bak Interaction显示文摘Amyotrophic lateral syndrome(ALS)is a progressive degenerative disorder characterized by motor neuron death and axon degeneration.Mitochondrial dysfunction plays a key role in the pathogenesis of ALS,the mechanism of which remains poorly understood.The B-cell lymphoma-2(Bcl-2)family of proteins that control and mediate mitochondrial function and apoptosis,including the pro-apoptotic members Bcl2-Associated X(Bax),are involved in ALS development.The death receptor 6(DR6)regulates motor neuron death in ALS,and DR6 antibodies can prevent axon degeneration and motor neuron damage by blocking DR6.Previous studies demonstrated that PSAP localized to mitochondria and was required for DR6-induced apoptosis.In this study,SOD1^(G93A) was transfected into the motor neuron cell line NSC-34 to serve as an ALS cell model in vitro.The data assessed the role of PSAP in SOD1^(G93A)induced apoptosis and demonstrated that the overexpression of SOD1^(G93A),but not wtSOD1,induced PARP cleavage,caspase-3 activation,cytochrome c release,and Bax translocation.PSAP,Bax,and Bak were necessary for SOD1^(G93A)induced apoptosis,as silencing PSAP inhibited SOD1^(G93A)-mediated cell death that was dependent on Bax-Bak interaction. | HAN NIU XIN CHEN XUEQI FU JINGTIAN ZHANG GUODONG LI YUXIANG WANG JIAYUE SONG XUETING MA CHEN HU XUEMIN XU FUQIANG ZHANG LINLIN ZENG | 2021 | BIOCELL2021，45，4： | 2 |
| 5 | Tfibological behaviours of carbon fibre reinforced PEEK sliding on silicon nitride lubricated with water显示文摘 | TANG Qunguo CHEN Jingtian LIU Liping | 2010 | Wear2010，269，8： | 1 |
| 6 | Theoretical study on the degradation reaction of octachlorinated dibenzo-p-dioxin with atomic oxygen o(3P) in dielectric barrier discharge reactor显示文摘Dielectric barrier discharges(DBD) have been used in the degradation of dioxins due to the large number of excimers and free radicals produced in discharge process. In this article,the density functional theory(DFT) is used to study the degradation mechanism of octachlorinated dibenzo-p-dioxin(OCDD) with the atomic oxygen O(3P) in DBD reactor. The reactants, intermediates, transition states and products are optimized at the MPWB1K/6 –31 + G(d,p) level. The vibrational frequencies have been calculated at the same level. The reaction pathways and mechanisms are analyzed in detail. The effect of removing the chlorine atom on environment also has been discussed. | Chen Gong Xiaomin Sun Chenxi Zhang Jingtian Hu Chuansong Qi | 2014 | Journal of Environmental Sciences2014，26，11： | 1 |
| 7 | Hydrogen sulfide inhibits beta-amyloid peptide-induced apoptosis in PC12 cells and the underlying mechanisms显示文摘BACKGROUND:Studies have demonstrated that hydrogen sulfide(H2S) levels are 55% lower in brains of Alzheimer's disease(AD) patients than in age-matched normal individuals,which suggests that H2S might be involved in some aspects of AD pathogenesis.OBJECTIVE:To observe the protective mechanisms of varied concentrations of H2S against β-amyloid-peptide(Aβ) induced apoptosis in pheochromoytoma(PC12) cells,and to analyze the pathway of action.DESIGN,TIME AND SETTING:A controlled,observational,in vitro experiment was performed at Neurophysiology Laboratory in Zhongshan Medical School,Sun Yat-sen University between July 2006 and May 2007.MATERIALS:PC12 cells were provided by the Animal Experimental Center of Medical School of Sun Yat-sen University.Glybenclamide,rhodamine123,and dihydrorhodamine123 were purchased from Sigma(USA).METHODS:PC12 cells were incubated at 37 ℃ in a 5% CO2-enriched incubator with RPMI-1640 medium,supplemented with 5% horse-serum and 10% fetal bovine serum.Cells in logarithmic growth curves received different treatment:The PC12 cells were maintains at 37 ℃ with the original medium,then incubated in Aβ25-35,sodium hydrosulfide(NaHS),glybenclamide,NaHS+ Aβ25-35,or pretreated with glybenclamide 30 minutes prior to administration of and Aβ25-35,respectively.MAIN OUTCOME MEASURES:(1) The survival rate of PC12 cells was detected by MTT assay and Hoechst staining.(2) The apoptosis rate of PC12 cells was detected utilizing flow cytometry with propidium iodide staining,and morphological changes of apoptotic cells were observed.(3) The mitochondrial membrane potential was detected by Rhodamine123-combined flow cytometry.(4) The intracellular reactive oxygen species content was detected by dihydrorhodamine123-combined flow cytometry.RESULTS:Aβ25-35 induced significantly decreased viability and increased percentage of apoptosis in PC12 cells,as well as dissipated mitochondrial membrane potential expression and an overproduction of reactive oxygen species.When PC12 cells were co-treated with NaHS and Aβ25-35,the decreased cell viability induced by 20 μmol/L Aβ25-35 was concentration-dependently blocked by NaHS(50,100,and 200 μmol/L).NaHS(100 μmol/L) obviously reduced the percentage of apoptotic PC12 cells induced by 20 μmol/L Aβ25-35.In addition,100 μmol/L NaHS inhibited mitochondrial membrane potential dissipation and reactive oxygen species overproduction.When the ATP-sensitive K channel(KATP) inhibitor,glybenclamide,was administered 30 minutes prior to NaHS and Aβ25-35 treatment,the NaHS-dependent cellular protection was partly blocked.This resulted in reduced PC12 cell viability and increased the percentage of apoptosis,as well as significantly blocked mitochondrial membrane potential preservation and inhibited reactive oxygen species overproduction due to NaHS treatment.CONCLUSION:NaHS protected PC12 cells against Aβ25-35-induced damage.NaHS-dependent cellular protection was associated with mitochondrial membrane potential preservation and inhibition of reactive oxygen species overproduction.The KATP channel inhibitor,glybenclamide,significantly blocked the cellular protective effects of NaHS,indicating that KATP channel activation plays an important role in NaHS-induced protection of PC12 cells to Aβ25-35-induced damage. | Xiuqin Chen Jingtian Li Jinhui Zou Bailing Li Meng Wang | 2008 | Neural Regeneration Research2008，3，9： | 1 |
| 8 | Tfibological behaviours of carbon fibre reinforced PEEK sliding on silicon nitride lubricated with water显示文摘 | TANG Qunguo CHEN Jingtian LIU Liping | 2010 | Wear2010，269，7： | 1 |
| 9 | Cultural Practices for Edible Roses in the Open Field in Tropical Areas显示文摘The edible rose was planted on trial in Hainan under the tropical oceanic climate environment according to its botanic characteristics and growth habit.A set of cultural practices suitable for the edible rose planted in Hainan was summarized,including land selection,land preparation,variety selection,planting requirements,field management,pruning,flowering regulation,and control of pests and diseases. | Yilei ZHANG Huiqiu XU Hailiang ZHANG Shiyang HONG Jingtian LI Taihao CHEN Jingpin LIANG Guangying ZHAO | 2018 | Agricultural Biotechnology2018，7，1： | 0 |
| 10 | Study of Memory Bias in Coronary Heart Disease with Depressive Mood显示文摘 | Yuping Song Huihui Li Jingtian Li Yuri Wang Xiaoli Chen | 2013 | 心理学研究评论(中英文版)2013，2，2： | 0 |
| 11 | Occurrence Characteristics,Prevention and Control of Pests and Diseases of Tropical Outdoor Cultivated Rosa chinensis显示文摘According to the hazards and occurrence characteristics of major diseases of Rosa chinensis,such as powdery mildew,branch canker and black spot,and major pests such as mites,aphids,thrips and Lepidoptera,prevention and control of the diseases and pests should be based on pruning,garden cleaning,water and fertilizer management,and chemical control can be applied as the supplement. Suitable prevention and control measures should be adopted for preventing the diseases and pests scientifically. | Lin Hengmi Xu Huiqiu Zhang Hailiang Qiao Shunfa Hong Shiyang Zhang Yilei Li Jingtian Chen Xingyu | 2014 | Plant Diseases and Pests2014，5，6： | 0 |
| 12 | Extraction of uranium (VI) from nitric acid with N-decanoylpyrrolidine (DPOD) in toluene显示文摘The extraction behaviors of uranium (VI) from nitric acid by N-decanoylpyrrolidine (DPOD) in toluene has been studied at varying concentrations of nitric acid, extractant, salting out agent LiNO3 and at different temperatures. The mechanism of extraction is discussed in the light of the results obtained. | HAN Jingtian SUN Guoxin BAO Borong (Shanghai Institute of Nuclear Research, the Chinese Academy of Sciences, Shanghai 201800) CHEN Shufeng SHEN Yunxiu (Binzhou Medical College, Binzhou 256603) | 1999 | Nuclear Science and Techniques1999，10，1： | 0 |
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