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co-Condensation Synthesis of Salicylaldimine Calcium Complex Containing Mesoporous Silica Nanoparticles as Carriers for Drug Release

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Chemical Research in Chinese Universities 2014年第4期30卷 531-537页

作者： TANG Duihai zhang Weiran WANG Yifan MIAO Jing QIAO Zhen'an HUO qisheng zhang Lirong State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China

A series of functional mesoporous silica nanoparticles（MSNs） was synthesized by a one-step simple synthesis approach involving co-condensation of tetraethoxysilane（TEOS） and salicylaldimine ligand（Sal-Si） in the presence of cetyltrimethylammonium chloride（CTAC） under basic *** target MSNs with different sizes （50,100 and 200 nm,respectively） were ***,the Ca^2＋ cations were also introduced into *** prepared nanoparticles were characterized by means of infrared（IR） spectra,thermogravimetric analysis（TGA）,inductively coupled plasma（ICP）,CHN elemental analysis,nitrogen adsorption-desorption,scanning electron microscope（SEM） and transmission electron microscope（TEM）.Ibuprofen（IBU） which contains carboxyl groups was selected as a model *** results of drug loading and release reveal that the loading capacities and release behaviors of the model drug are highly dependent on the Ca^2＋ cations in *** release of IBU from the MSNs functionalized by Ca^2＋ cations is found to be effectively controlled when compared to the release from the MSNs without the functionalization of Ca^2＋ cations,which is due to the ionic interaction between carboxyl groups in IBU and Ca^2＋ cations in MSNs.

关键词： Mesoporous silica nanoparticle co-Condensation method Release of ibuprofen Calcium ion

Degradation Mechanisms in Blue Organic Light-Emitting Diodes

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CCS Chemistry 2020年第4期2卷 1278-1296页

作者： Dan Wang Cong Cheng Taiju Tsuboi qisheng zhang MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027

An organic light-emitting diode(OLED)is required to exhibit long-time operation without degradation as an inorganic *** long operation time has been demonstrated for green-and red-emitting ***,a blue device that is important for full-color display and lighting exhibits a much shorter operational lifetime than the other color *** short lifetime is mainly attributed to the molecular dissociation and the defects and radical species formation through various unimolecular and bimolecular processes,including direct photolysis,exciton–exciton interaction,and exciton–polaron interaction,and so on.

关键词： fluorescent organic light-emitting diodes phosphorescent organic light-emitting diodes thermally activated delayed fluorescence device degradation operational lifetime molecular dissociation

Tuning the Excited State of Tetradentate Pd(ll) and Pt(ll) Complexes through Benzannulated N-Heteroaromatic Ring and Central Metal

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Chinese Journal of Chemistry 2022年第2期40卷 223-234页

作者： Guijie Hua Guo Xiaoli Fang Yun-Fang Yang Yulu Sun Weiwei Lou qisheng zhang Yuanbin She College of Chemical Engineering Zhejiang University of TechnologyHangzhouZhejiang 310014China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhouZhejiang 310027China

A series of tetra de ntate Pd(ll)and Pt(ll)complexes containing fused 5/6/6 metallocycles with phe nyl/V-heteroaromatic ben-zo[d]imidazole(pbiz),benzo[d]oxazole(pboz)or benzo[d]thiazole(pbthz)-containing ligands was *** studies by experiments and theoret:ical calculations reveal that both the central metal and the benzannulated A/-heteroaromatic ring have sig-n ificant in flue nee on the electrochemical,photophysical and excited-state properties of the Pd(ll)and Pt(ll)*** identical condition,compared to pb/z-based Pd(ll)and Pt(ll)complexes,the corresponding metal complexes with pboz and pbthz-containing ligand show significant red-shift emission spectra.

关键词： Semiconductors Luminescence Platinum and Palladium Energy conversion OLED

Methods for estimating rotational components of seismic ground motion and their numerical comparisons

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Earthquake Science 2020年第4期33卷 201-208页

作者： Chang Chen Yun Wang Yongxiang Wei Shuilong Li qisheng zhang MWMC Research Group School of Geophysics and Information TechnologyChina University of GeoscienceBeijing 100083China Fujian Earthquake Agency Fuzhou 530001China

Rotational components play an important role in natural earthquake research,engineering seismic investigation,building monitoring,seismic exploration and other *** researches mainly focus on three translational components,but less on rotational *** the precision of rotational sensing techniques has increased,many scholars have paid more attention to the seismic rotational *** the rotational observations are not very popular before and now,approximately converting the translational components into rotational components is utilized in rotation *** on numerical six-component seismic data with the finite difference method,we compare three different conversion methods,the travelling-wave,frequency-domain and the difference method,to analyze their characteristics and feasibilities when they are applied to estimate rotational components with translational observations.

关键词： rotational components travelling-wave method frequency-domain method difference method

Fiercer Competition in the Toluene Market

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China Chemical Reporter 2008年第12期19卷 18-18页

作者： zhang qisheng

Drastic capacity expansion Sources of toluene in China include cata-lytic reforming products in refineries(80%),cracked gasoline in ethylene units(16%),coal tar and others (4%).Sinopec and CNPC are the *** the completion of new and expansion aro-matic units,the toluene sector in China has developed rapidly in recent years and output is constantly *** total capacity of toluene in China reached 2.039 million t/a,and output was 1.218 million tons in *** and expansion of toluene units in refining and ethylene units in China are also *** new toluene capacity

关键词： constantly completion CNPC planned sector refining

Observation and research of deep underground multi-physical fields—Huainan–848 m deep experiment

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Science China Earth Sciences 2023年第1期66卷 54-70页

作者： Yun WANG Yaxin YANG Heping SUN Chengliang XIE qisheng zhang Xiaoming CUI Chang CHEN Yongsheng HE Qiangqiang MIAO Chaomin MU Lianghui GUO Jiwen TENG School of Geophysics and Information Technology China University of GeosciencesBeijing 100083China School of Geophysics and Measurement-control Technology East China University of TechnologyNanchang 330013China Innovation Academy for Precision Measurement Science and Technology Chinese Academy of SciencesWuhan 430077China Institution of Engineering Protection IDEAMSPLALuoyang 471023China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China Institute of Geochemistry Chinese Academy of SciencesGuiyang 550081China

Compared with the surface,the deep environment has the advantages of allowing“super-quiet and ultra-clean”-geophysical field observation with low vibration noise and little electromagnetic interference,which are conducive to the realization of long-term and high-precision observation of multi-physical fields,thus enabling the solution of a series of geoscience *** the Panyidong Coal Mine,where there are extensive underground tunnels at the depth of 848 m below sea level,we carried out the first deep-underground geophysical observations,including radioactivity,gravity,magnetic,magnetotelluric,background vibration and six-component seismic *** concluded from these measurements that(1)the background of deep subsurface gravity noise in the long-period frequency band less than 2 Hz is nearly two orders of magnitude weaker than that in the surface observation environment;(2)the underground electric field is obviously weaker than the surface electric field,and the relatively high frequency of the underground field,greater than 1 Hz,is more than two orders of magnitude weaker than that of the surface electric field;the east-west magnetic field underground is approximately the same as that at the surface;the relatively high-frequency north-south magnetic field underground,below 10 Hz,is at least one order of magnitude lower than that at the surface,showing that the underground has a clean electromagnetic environment;(3)in addition to the highfrequency and single-frequency noises introduced by underground human activities,the deep underground space has a significantly lower background vibration noise than the surface,which is very beneficial to the detection of weak earthquake and gravity signals;and(4)the underground roadway support system built with ferromagnetic material interferes the geomagnetic *** also found that for deep observation in the“ultra-quiet and ultra-clean”environment,the existing geophysical equipment and observation technology hav

关键词： Multi-physical fields Radioactivity Gravity Geomagnetic Electromagnetic Earthquake Observations deep underground

Demand for High-Sulfur Petroleum Coke Will Decrease

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China Chemical Reporter 2009年第7期20卷 14-15页

作者： zhang qisheng,the Marketing Center of Sinopec Tianjin Petrochemical Limited

Petroleum coke is a kind of black or dark greypowder by-product of delayed coking *** to the sulfur content level,domesticpetroleum coke products can be categorizedas low sulfur coke (sulfur content is notmore than 3%... 详细信息

关键词： Petroleum sulfur Shandong Sulfur Henan Tianjin ann

Recapitulation of SARS-CoV-2 infection and cholangiocyte damage with human liver ductal organoids

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Protein & Cell 2020年第10期11卷 771-775页

作者： Bing Zhao Chao Ni Li Yang Jinsong Wei Jianqing Liang Xinhua Lin Ran Gao Xiaoyue Wang Junbo Liang Yuyan Wang Wei Xu Youhua Xie Zhenghong Yuan Rong zhang Ting Lv qisheng zhang State Key Laboratory of Genetic Engineering School of Life Sciences Zhongshan Hospital Fudan University Shanghai 200438 China State Key Laboratory of Medical Molecular Biology Institute of Basic Medical Sciences Peking Union Medical College Chinese Academy of Medical Sciences Beijing 100005 China Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS) School of Basic Medical Sciences Shanghai Medical College Fudan University Shanghai 200032 China Institute of Antibiotics Huashan Hospital Fudan University Shanghai 200040 China Sino Organoid Lifesciences Ltd. Shanghai 201900 China

Dear Editor,The emerging pandemic of coronavirus,SARS-CoV-2(pre-viously named 2019-nCoV),has posed significant threats to global public health(Wu et al,2020).The dominant symp-toms of coronavirus disease 2019(COVID-19)are fever and cough(Chen et al.,2020;Huang et al.,2020).However,a proportion of patients showed multi-organ damage and dysfunction(Chen et al.,2020;Huang et al.,2020;Zhu et al.,2020).Of note,liver damage is emerging as a co existed symptom reported in patients with COVID-19.A recent epi-demiologic study in Shanghai(China)reported that 75 out of 148(50.7%)COVID-19 patients had liver function abnor-mality,indicated by key liver function parameters above the normal range,including alanine aminotransferase(ALT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)or total bilrubin(TBIL)(Fan et al.,2020).

关键词： damage al. liver

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拟糖蛋白合成研究进展

有机化学 2003年第5期23卷 425-431页

作者：张健张其胜田庚元中国科学院上海有机化学研究所上海200032 上海市第一人民医院分院消化科上海200081

拟糖蛋白因为其很多方面的生物活性和它可以通过合成大量获得 ,而引起了化学家和生物学家极大的关注 .就拟糖蛋白的应用及各种合成方法作一简要的评述 .

关键词：拟糖蛋白合成抗原糖缀合物物理化学性质生物活性