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催化学报 2014年第7期35卷 983-988页

作者： Zhou yang Wen-hua zhang Dalian Institute of Chemical Physics Chinese Academy of Sciences

这个观点介绍对 organolead 卤化物的简短描述基于 perovskite 的太阳能电池包括结构和 perovskite 的基本性质，太阳能电池的分类，和他们是的潜力的眼界双人脚踏车的 subcells 光电的设备和大规模适用性。

关键词：太阳能电池钙钛矿卤化物有机铅 TiO2薄膜球员功率转换效率太阳光

N_2O and NH_3 emissions from a bioreactor landfill operated under limited aerobic degradation conditions

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Journal of Environmental Sciences 2011年第6期23卷 1011-1019页

作者： Pinjing He Na yang Huili Gu hua zhang Liming Shao State Key Laboratory of Pollution Control and Resources Reuse Key Laboratory of Yangtze River Water Environment College of Environmental Science and Engineering Tongji University Shanghai 200092 China

The combination of leachate recirculation and aeration to landfill may be an efficient way for in-situ nitrogen ***,nitrogenous substances contained in the landfill layer are concomitantly transformed into N2O and NH3,leading to increased emissions into the *** the present study,the emissions of N2O and NH3 were measured under conditions of fresh or partially stabilized refuse with or without leachate recirculation or intermittent *** results showed that the largest N2O emission（12.4 mg-N/L of the column） was observed in the aerated column loaded with partially stabilized refuse and recycled with the leachate of low C/N ratio;while less than 0.33 mg-N/L of the column was produced in the other columns.N2O production was positively correlated with the prolonged aerobic time and negatively related with the C/N ratio in the recycled ***3 volatilization increased with enhanced gas flow and concentration of free ammonia in the leachate,and the highest cumulative volatilization quantity was 1.7 mg-N/L of the column.

关键词： municipal solid waste bioreactor landfill aeration N2O emission NH3 volatilization

Progress of Nb-containing catalysts for carbon dioxide reduction:a minireview

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Tungsten 2022年第4期4卷 284-295页

作者： Jun-Xian Gao Wen-Jie Tian hua-yang zhang School of Environment and Civil Engineering Jiangnan UniversityWuxi214122China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA5005Australia

Nb-containing catalysts have the potential to catalyze carbon dioxide(CO_(2))reduction due to their strong surface acidity and CO_(2)activation ***,they have not been widely used in the development and design of catalysts due to the theoretical/cost/safety *** advances have been continuously reported in the literature,demonstrating to some extent the promise of catalytic applications of Nb-containing catalysts in this *** this minireview,we discuss the structure-activity relationships of Nb-containing catalysts for photo-,electro-,and thermocatalytic reduction of CO_(2).The engineering strategies of Nb-containing catalysts for enhancing the conversion and selectivity of CO_(2)reduction are discussed,ranging from Nb doping,noble metal decoration,surface acidity adjustment,oxygen vacancy engineering,and heterojunction construction to Nb or Nb_(2)O_(5) particle *** theoretical calculation research for the possible reaction paths and product selectivity is also ***,the prospects for designing and optimizing Nb-containing catalysts are *** a deep understanding of catalytic activity and reaction mechanism,this minireview is expected to present the optimization of the Nb-containing catalysts for efficient and highly selective CO_(2)reduction.

关键词： Niobium Carbon dioxide reduction Photocatalysis Electrocatalysis Thermocatalysis

Research into a Feature Selection Method for Hyperspectral Imagery Using PSO and SVM

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Journal of China University of Mining and Technology 2007年第4期17卷 473-478页

作者： yang hua-chao zhang Shu-bi DENG Ka-zhong DU Pei-jun School of Environment ＆ Spatial Informatics China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China

Classification and recognition of hyperspectral remote sensing images is not the same as that of conventional multi-spectral remote sensing images. We propose,a novel feature selection and classification method for hyperspectral images by combining the global optimization ability of particle swarm optimization (PSO) algorithm and the superior classification performance of a support vector machine (SVM). Global optimal search performance of PSO is improved by using a chaotic optimization search technique. Granularity based grid search strategy is used to optimize the SVM model parameters. Parameter optimization and classification of the SVM are addressed using the training date corre-sponding to the feature subset. A false classification rate is adopted as a fitness function. Tests of feature selection and classification are carried out on a hyperspectral data set. Classification performances are also compared among different feature extraction methods commonly used today. Results indicate that this hybrid method has a higher classification accuracy and can effectively extract optimal bands. A feasible approach is provided for feature selection and classifica-tion of hyperspectral image data.

关键词： hyperspectral remote sensing particle swarm optimization support vector machine feature extraction

Microstructure and texture evolution during recrystallization of low-carbon steel sheets

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Journal of Iron and Steel Research International 2017年第1期24卷 84-90页

作者： Dong-dong Zhuang Lei-gang Wang Yao huang Xiao-min Li hua-yang zhang De-wei Ren School of Material Science and Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina School of Material Science and Engineering Shandong UniversityJinan 250061ShandongChina Metallurgical Corporation of China Group Shanghai 201900China

Aluminum killed low-carbon steel sheets were cold rolled at different reduction ratios and annealed using different temperatures and holding *** Vickers hardness was *** results show that when cold rolling reduction ratios increase from 40% to 81%,recrystallization temperatures decrease from 602℃ to 572℃ during 4hisochronal annealing,as well recrystallization holding time decreases from 117 min to 5min during isothermal annealing at 610℃.All recrystallization temperatures and holding time can be calculated using the annealing experiment *** was examined through electron backscattered diffraction（EBSD）.The results show that as rolling direction preferentially grows,equiaxed grains grow into cake-type during ***-type grains are more beneficial to obtaining ideal〈111〉//ND（normal direcrtion）orientation texture.{111}orientation grains nucleate and grow up *** grains of{111}〈110〉orientations grow into new recrystallization grains of{111}〈123〉and{111}〈112〉during *** formation can be explained by directional nucleation.

关键词： Aluminum killed low-carbon steel sheet Recrystallization Annealing Vickers hardness Texture

Effects of the crude extract of Polygala tenuifolia Willd on human sperm in vitro

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第6期12卷 448-454页

作者： Yi QIU Lei-guang WANG Yi-fang JIA Dan-tong yang Mei-hua zhang Yan-ping zhang Li-hong zhang Ling GAI Key Laboratory for Improving Birth Outcome Technique Shandong Provincial Institute of Science and Technology for Family Planning Jinan 250002 China

The aim of the present study is to analyze sperm membrane changes and the spermicidal effect in treatment with the crude extract from Polygala tenuifo/ia Willd （PTW） in vitro. The root of PTW was extracted in distilled water. Normal human spermatozoa were used to assess the spermicidal activity （Sander-Cramer assay） of the extract from the PTW root. The hypo-osmotic swelling （HOS） test and the eosin Y （EY） staining were used to detect the integrity of sperm membrane and vitality. The sperm chromatin dispersion （SCD） test was performed to determine sperm DNA integrity. N-9 was used as a reference standard and semen added to physiological saline was used as the control. Semen samples were donated by 42 healthy fertile men. The crude extract from the root of PTW could immobilize and kill 100% spermatozoa within 20 s in vitro at the concentrations of 20.0 and 10.0 mg/ml; at the concentration of 5.0 mg/ml, spermatozoa were immobilized in （39.5±3.2） s. In the groups of the crude extract from the root of PTW and N-9 solution the rate of the normal HOS （tails swollen） and the white head （unstained） was 0%, and the rate of the abnormal HOS （tails unswollen） and red head （stained） was 100%. Sperm DNA fragmentation showed no change in exposure to the crude extract from the root of PTW and N-9 solution. The sperm revival test did not show any spermatozoa that recovered their motilities. The rapid spermicidal activity of the crude extract from the root of PTW in vitro may occur by the disruption of the sperm membrane integrity.

关键词： Polygala tenuifofia Willd Crude extract Spermicidal effect in vitro Sperm membrane DNA integrity

(Parallel) kinetic resolution of 3,3-disubstituted indolines via organocatalyzed reactions with azodicarboxylates

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Science China Chemistry 2024年第3期67卷 973-980页

作者： Qianwen Jiang Dekun zhang Mengyao Tang hua Liu Xiaoyu yang School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China

A novel kinetic resolution(KR) method has been developed for 3,3-disubstituted indolines, whose catalytic asymmetric synthesis remains a significant challenge in organic synthesis. The key to the success of this KR protocol lies in the utilization of chiral phosphoric acid-catalyzed triazane formation reaction with azodicarboxylates, which enables the enantioselective synthesis of various substituted indolines bearing C3-quaternary stereocenters with good to high enantioselectivities(with sfactors up to 70). Moreover, an intriguing parallel kinetic resolution(PKR) has been developed by combining triazane formation and dehydrogenation reactions using different azodicarboxylates. Experimental studies have provided insight into the mechanism of this PKR reaction, demonstrating stereoselectivity in both triazane formation and dehydrogenation steps, favoring the opposite enantiomers. The large-scale synthesis and diverse derivatizations of the products, particularly the imine groupcontaining 3H-indoles, demonstrate the value of these(P)KR methods.

关键词： asymmetric organocatalysis kinetic resolution 3 3-disubstituted indolines azodicarboxylate triazanes

Multifunctional phase change film with high recyclability, adjustable thermal responsiveness, and intrinsic self-healing ability for thermal energy storage

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Journal of Energy Chemistry 2024年第10期97卷 216-227页

作者： Bo yang Xuelai zhang Jun Ji Weisan hua Miaomiao Jiang Institute of Cool Thermal Storage Technology Shanghai Maritime University

Phase change materials(PCMs) present promising potential for guaranteeing safety in thermal management ***,most reported PCMs have a single application in energy storage for thermal management systems,which does not meet the growing demand for multi-functional *** this paper,the flexible material and hydrogen-bonding function are innovatively combined to design and prepare a novel multi-functional flexible phase change film(PPL).The 0.2PPL-2 film exhibits solid-solid phase change behavior with energy storage density of 131.8 J/g at the transition temperature of42.1℃,thermal cycling stability(500 cycles),wide-temperature range flexibility(0-60℃) and selfhealing ***,the PPL film can be recycled up to 98.5% by intrinsic ***,the PPL film can be tailored to the desired colors and configurations and can be cleverly assembled on several thermal management systems at ambient temperature through its flexibility combined with shape-memory *** interestingly,the transmittance of PPL will be altered when the ambient temperature changes(60℃),conveying a clear thermal ***,the thermal energy storage performance of the PPL film is successfully tested by human thermotherapy and electronic device temperature control *** proposed functional integration strategy provides innovative ideas to design PCMs for multifunctionality,and makes significant contributions in green chemistry,highefficiency thermal management,and energy sustainability.

关键词： Energy storage Multifunctional material Phase change film Recyclability Self-healing

A selective HK2 degrader suppresses SW480 cancer cell growth by degrading HK2

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Chinese Chemical Letters 2024年第8期35卷 201-204页

作者： yang Liu Yan Liu Kaiyin yang Zhiruo zhang Wenbo zhang Bingyou yang hua Li Lixia Chen Wuya College of Innovation Key Laboratory of Structure-Based Drug Design&DiscoveryMinistry of EducationShenyang Pharmaceutical UniversityShenyang 110016China Key Laboratory of Basic and Application Research of Beiyao Ministry of EducationHeilongjiang University of Chinese MedicineHarbin 150006China Institute of Structural Pharmacology&TCM Chemical Biology College of PharmacyFujian University of Traditional Chinese MedicineFuzhou 350122China Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation School of PharmacyTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China

Hexokinase 2(HK2)is the rate-limiting enzyme in the first step of glycolysis,catalyzing glucose to glucose-6-phosphate,and overexpressed in most cancer ***2 also binds to voltage-dependent anion channel(VDAC)to stabilize the mitochondrial outer membrane,which inhibits cancer cell ***,HK2 has become a potential target for cancer *** targeting chimeras(PROTACs)are hetero-bifunctional molecules that recruit an E3 ubiquitin ligase to a given substrate protein resulting in its targeted *** potent and specific PROTACs targeting dissimilar targets have been *** this study,an HK2 PROTAC,4H-5P-M,was developed and induced the degradation of HK2 relying on the ubiquitin-proteasome *** was found that 4H-5P-M as an effective HK2 degrader induced HK2 degradation in a dose-and time-dependent manner and suppressed the growth of SW480 cells.4H-5P-M selectively induced HK2 degradation at a lower concentration than other hexokinase ***,it could suppress glycolysis and accelerate the apoptosis of cancer ***,it provided a new insight into the development of anti-tumor drugs.

关键词： HK2 PROTACs Degrader Anti-tumor SW480

Nickel-Catalyzed Regio-and Stereoselective Defluorinative Arylation of gem-Difluorinated Cyclopropanes

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Chinese Journal of Chemistry 2024年第8期42卷 823-828页

作者： Shutao Qi Yunkai hua Liangkai Pan Junfeng yang Junliang zhang Department of Chemistry Fudan University2005 Songhu RoadShanghai200438 China Fudan zhangjiang Institute Shanghai201203 China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiangHenan 453007China

Comprehensive Summary,Herein,we report nickel-catalyzed cross-coupling of gem-difluorinated cyclopropanes with boronic acids,providing the corresponding arylated 2-fluoroallylic *** approach used commercially available phosphine ligand Xantphos to obtain monofluorinated alkenes with high regioselectivity and *** studies proposed a Ni(II)-fluoroallyl pathway and excluded the radical pathway.

关键词： Nickel Monofluoroolefin Cyclopropane Regioselectivity Stereoselectivity C-C coupling Cross-coupling Synthetic methods