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21篇 您的检索式:作者名="Daocheng"
    题名 作者 年代 出处 被引量
1Effect of cerium on structure,magnetism and magnetostriction of Fe_(81)Ga_(19) alloy显示文摘FeGa alloy is a new kind of magnetostrictive material, and rare-earth cerium can improve its magnetostrictive property.(Fe_(81)Ga_(19))_(100-x)Ce_x(x = 0, 0.3 at%, 0.7 at%, 1 at%) samples were prepared by doping cerium in Fe_(81)Ga_(19) alloy. Their microstructures and phases were studied, and valence electronic structures were investigated. Electromagnetic parameters, such as coercivity, saturation magnetization,remnant magnetization and saturation magnetostrictive coefficients(λ_s) of every sample were measured.Cerium atoms are distributed at grain boundaries, and the Ce-doped alloys remain the A2 structure of FeGa alloy. When x is 0.7, the value of saturation magnetism is 217.08 emu/g, which is the maximum in the Ce-doped samples. The equivalent half length of single bond is the maximum also, and reaches to0.11380 nm. At the same time, the number of covalent electrons is 3.5672, and is the minimum of the Cedoped samples. Its As is the largest in the four samples. The change of As results in the change of equivalent half length of single bond in Ce-doped alloy.Tingdong Zhou Yu Zhang Daocheng Luan Qing Cai 2018Journal of Rare Earths2018,36,7:5
2Inhibitory effect of a new gossypol derivative apogossypolone (ApoG2) on xenograft of human prostate cancer cell line PC-3显示文摘Objective: To investigate the inhibitory effect of apogossypolone (ApoG2) on prostate cancer cell line PC-3 in vivo, and explore its mechanism. Methods: The models of transplantation tumors in Balb/c nu/nu mice were established via subcutaneous injection of PC-3 cells and the tumor-transplanted mice were divided into 4 groups: control group and three ApoG2 treatment groups, with 10 mice in each group. Volumes of the tumor were estimated every 2 d and the morphology of tumor tissues was observed. Immunohistochemistry was employed to observe the expression of Bcl-2, PCNA, CD31, caspase-3 and caspase-8 in tumor tissues. Results: ApoG2 (2.5 mg/kg-10 mg/kg) given intraperitoneally once a day can obviously inhibit the growth of subcutaneous prostatic carcinoma implant. The tumor volume decreased obviously when the treatment dosage was bigger than 5.0 mg/kg (P<0.01). Meanwhile, ApoG2 decreased the expression of PCNA and CD31, and enhanced the expression of caspases-3, caspase-8 in tumor tissues. Conclusion: ApoG2 exert an inhibitory effect on prostatic carcinoma possibly by inducing apoptosis and inhibiting tumor angiogenesis.Zhang Xianqing Huang Xiaofeng Mu Shijie Chen Rui An Qunxing Xia Aijun Wu Daocheng 2009Journal of Medical Colleges of PLA(China)2009,24,5:2
3Synthesis of Monodisperse CexZr1-xO2 Nanocrystals and the Size-Dependent Enhancement of Their Properties显示文摘Monodisperse Ce1 ? x Zr x O2 nanocrystals 用一条简单二阶段的途径被综合了;调整使用的先锋的比率,盖住使用的代理人的数量,反应时间和温度在他们的作文,结构和尺寸上负担得起精确控制。氧存储能力的尺寸依赖者改进和氧存储和版本的动力学被观察。系统的研究被进行以便理解这些性质的尺寸依赖者改进。这个工作向重要卓见提供进合成和多部件 nanocrystals 的基本理解应用的一个大变化。Yuewei Zhang Jing Wen Jun Wang Daocheng Pan Meiqing Shen Yunfeng Lu 2011Nano Research2011,4,5:2
4Synthesis of Cu-In-S ternary nanocrystals with tunable structure and composition显示文摘Pan Daocheng An Lijia Sun Zhongming 0,,17:1
5Novel functionalized ternary copolymer fluorescent nanoparticles: synthesis, fluorescent characteristics and protein immobilization显示文摘Maolin Lu Daocheng Wu Na Guo 2009Journal of Materials Science: Materials in Medicine2009,,2:1
6Enhancing the Antitumor Effects of Adriamycin Nanoparticles by Pretreating Liver Cancer with Diethyldithiocarbamate 显示文摘 Wan Mingxi Mo Jian 2002J Chin Pharm Sci2002,11,3:1
7Controllable synthesis of highly luminescent and monodisperse CdS nanocrystals by a two-phase approach under mild conditions显示文摘PAN Daocheng JIANG Shichun AN Lijia 2004Adv Mater2004,16,:1
8Comparison study on the seismic deformation of the 1999 Chi-Chi earthquake and Long-term strain gradient change along the Chelurgpu fault in centrol Taiwan显示文摘Daocheng Sun 2000TAO2000,11,3:1
9Two-phase synthesis of shape-controlled colloidal zirconia nanocrystals and their characterization 显示文摘Zhao Nana Pan Daocheng Nie Wei 2006J AM Chem Soc2006,128,:1
10Rapid detection assay for the molecular imprinting of gossypol using a two-layer PMAA/SiO 2 bulk structure with a piezoelectric imprinting sensor显示文摘Chen Zhao Daocheng Wu 2013Sensors & Actuators: B Chemical2013,,:1
11An improved ultrasound - assisted extraction process of gossy- pol acetic acid from cottonseed soapstock 显示文摘JIA Guangfeng ZHAN Yonghua WU Daocheng 2009AIChE Jour- nal2009,55,3:1
12Synthesis of quaternary semiconductor nanocrystals with tunable band gaps显示文摘Pan Daocheng Wang Xiaolei Zhou Hong 2009Chem Mater2009,21,:1
13Reducing surficial and interfacial defects by thiocyanate ionic liquid additive and ammonium formate passivator for efficient and stable perovskite solar cells显示文摘Organic–inorganic metal halide perovskites have attained extensive attention owing to their outstanding photovoltaic performances,but the existence of numerous defects in crystalline perovskites is still a serious constraint for the further development of perovskite solar cells(PSCs).In particular,the rapid crystallization guided by anti-solvents leads to plenty of surficial and interfacial defects in perovskite films.Herein,we report the adoption of a pseudo-halide anion based ionic liquid additive,1-butyl-3-methylimidazolium thiocyanate(BMIMSCN)for growing ternary cation(CsFAMA,where FA=formamidinium and MA=methylammonium)perovskites with large-scale crystal grains and strong preferential orientation via the enhanced Ostwald ripening.Meanwhile,a novel halide-free passivator,benzylammonium formate(BAFa),was employed as a buffering layer on the perovskite films to suppress surface-dominated charge recombination.As a result,the cooperative effects of BMIMSCN additive and BAFa passivator lead to significant enhancements on fluorescence lifetime(from 79.41 to 201.01 ns),open-circuit voltage(from 1.13 to 1.19 V),photoelectric conversion efficiency(from 18.90%to 22.33%).Moreover,the BMIMSCN/BAFa-CsFAMA PSCs demonstrated greatly improved stability against moisture and heat.This work suggests a promising strategy to improve the quality of perovskite materials via reducing the surficial and interfacial defects by the synergistic effects of lattice doping and interface engineering.Mengfei Zhu Yuren Xia Lina Qin Kaiqiang Zhang Junchuan Liang Cheng Zhao Daocheng Hong Minghang Jiang Xinmei Song Jie Wei Pengbo Zhang Yuxi Tian Zhong Jin 2023Nano Research2023,16,5:1
14Synthesis of Cu-In-S ternary nanocrystals with tunable structure and composition 显示文摘Pan Daocheng An Lijia Sun Zhongming 2008J Am Chem Soc2008,130,:1
15The Spatial and Temporal Variability of Global Stratospheric GravityWaves and Their Activity during Sudden StratosphericWarming Revealed by COSMIC Measurements显示文摘This study investigates the spatial and temporal variability of global stratospheric gravity waves(GWs) and the characteristics of GW activity during sudden stratospheric warming(SSW) using the GPS radio occultation measurements from the COSMIC mission during September 2006 to May 2013. Corresponding to the COSMIC RO observational window and analysis method,GW potential energy(Ep) with vertical scales no shorter than ~2 km is resolved. It is found that the distributions of GW Ep over 20-30 km and 30-38 km show similar spatial and seasonal variations. The variations of GW Ep with altitude and latitude along the westerly wind are identified in different seasons over 60°-80°W. In the middle and high latitudes,seasonal cycles are distinct in the time-latitude and time-altitude distributions of GW activities,which show larger Ep in winters when westerly wind dominates and smaller Ep in summers when easterly wind dominates. The influence of quasi-biennial oscillation on GW activity is recognized in the tropics. GW Ep enhances closely following the occurrence of minor SSW events; while during major events, GW Ep may not enhance, and sometimes may even weaken,in the regions where reversals of zonal wind occur, probably caused by the filtering impact of the 0 ms^(-1) wind level on the GWs.Xiaohua XU Daocheng YU Jia LUO 2018Advances in Atmospheric Sciences2018,35,12:1
16LLC resonant con-verter with matrix transformer 显示文摘Daocheng Huang t Shu Ji F C Lee 2014IEEE Transactions onPower Electronics2014,29,8:1
17A vehicle-mounted dual-smog chamber:Characterization and its preliminary application to evolutionary simulation of photochemical processes in a quasi-realistic atmosphere显示文摘Smog chambers are the effective tools for studying formation mechanisms of air pollution.Simulations by traditional smog chambers differ to a large extent from real atmospheric conditions,including light,temperature and atmospheric composition.However,the existing parameters for mechanism interpretation are derived from the traditional smog chambers.To address the gap between the traditional laboratory simulations and the photochemistry in the real atmosphere,a vehicle-mounted indoor-outdoor dual-smog chamber(JNUVMDSC)was developed,which can be quickly transferred to the desired sites to simulate quasi-realistic atmosphere simultaneously in both chambers using“local air”.Multiple key parameters of the smog chamber were characterized in the study,demonstrating that JNUVMDSC meets the requirements of general atmospheric chemistry simulation studies.Additionally,the preliminary results for the photochemical simulations of quasi-realistic atmospheres in Pearl River Delta region and Nanling Mountains are consistent with literature reports on the photochemistry in this region.JNU-VMDSC provides a convenient and reliable experimental device and means to study the mechanism of atmospheric photochemical reactions to obtain near-real results,and will make a great contribution to the control of composite air pollution.Wenlu Wang Yang Xiao Shijie Han Yang Zhang Daocheng Gong Hao Wang Boguang Wang 2023Journal of Environmental Sciences2023,,10:0
18Unveiling non-radiative center control in CsPbBr_(3) nanocrystals:A comprehensive comparative analysis of hot injection and ligandassisted reprecipitation approaches显示文摘Metal-halide perovskite nanocrystals(NCs)have gained significant attention in the field of optoelectronic and photonic devices due to their promising applications.Despite their exceptional optical properties,the impact of different synthetic strategies on the fundamental nature of NCs,such as nonradiative recombination centers,remains poorly understood.In this study,we investigated the photophysical properties of CsPbBr_(3) NCs synthesized using two distinct methods,hot injection and ligand-assisted reprecipitation,at the individual particle level.We observed different blinking behaviors under specific photoexcitation power densities and proposed,through intensity-lifetime analysis and Monte-Carlo simulations,that these different synthetic strategies can fabricate NCs with similar crystal structures but distinct surface quenchers with varying energy levels,which significantly affected the photo-induced blinking-down and blinking-up behaviors in individual NCs.Our findings indicate a practical and feasible approach for controlling defect engineering in perovskite NCs,with significant implications for their use in optoelectronic and other technological applications.Daocheng Hong Yuchen Zhang Shuhan Pan Hanyu Liu Wei Mao Wanli Zhang Yuhui Ye Zhihong Wei Xuxing Lu Xiaoyong Wang Zhenda Lu Yuxi Tian 2024Nano Research2024,17,5:0
19KINETICS OF GOLD ADSORPTION AND ELUTION WITH C410 RESIN显示文摘The kinetics of gold adsorption and elution with a new type of C410 resin was studied.The experimental results show that the adsorption and elution can be described by the Boyd diffusion equation for liquid films.The adsorption rate of gold decreases with increasing HC1 concentration.The diffusion coefficient of adsorption is K=4.83×1O^(-4)sec^(-1)and the apparent enthalpy of adsorption AH is 16.05 kj/mol.The distribution ratio of gold adsorption increases with the temperature.It is shown that the adsorption were of gold with C410 resin is a heat-absorbing reaction.The elution characteristics of gold with thiourea solution were also studied.Yu Daocheng Jing Youping Ke Jiajun 1992Transactions of Nonferrous Metals Society of China1992,2,4:0
20Antimony doped CsPbI_(2)Br for high-stability all-inorganic perovskite solar cells显示文摘All-inorganic perovskites,adopting cesium(Cs+)cation to completely replace the organic component of A-sites of hybrid organic–inorganic halide perovskites,have attracted much attention owing to the excellent thermal stability.However,all-inorganic iodine-based perovskites generally exhibit poor phase stability in ambient conditions.Herein,we propose an efficient strategy to introduce antimony(Sb^(3+))into the crystalline lattices of CsPbI_(2)Br perovskite,which can effectively regulate the growth of perovskite crystals to obtain a more stable perovskite phase.Due to the much smaller ionic radius and lower electronegativity of trivalent Sb^(3+)than those of Pb^(2+),the Sb^(3+)doping can decrease surface defects and suppress charge recombination,resulting in longer carrier lifetime and negligible hysteresis.As a result,the all-inorganic perovskite solar cells(PSCs)based on 0.25%Sb^(3+)doped CsPbI_(2)Br light absorber and screen-printable nanocarbon counter electrode achieved a power conversion efficiency of 11.06%,which is 16%higher than that of the control devices without Sb^(3+)doping.Moreover,the Sb^(3+)doped all-inorganic PSCs also exhibited greatly improved endurance against heat and moisture.Due to the use of low-cost and easy-to-process nanocarbon counter electrodes,the manufacturing process of the all-inorganic PSCs is very convenient and highly repeatable,and the manufacturing cost can be greatly reduced.This work offers a promising approach to constructing high-stability all-inorganic PSCs by introducing appropriate lattice doping.Mengfei Zhu Lina Qin Yuren Xia Junchuan Liang Yaoda Wang Daocheng Hong Yuxi Tian Zuoxiu Tie Zhong Jin 2024Nano Research2024,17,3:0
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