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Preparation of CaS:Eu^(2+) Phosphor by Microwave Heating Method and its Luminescence

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Chinese Chemical Letters 2000年第9期11卷 843-846页

作者： Peng Jun liu ying liang liu Department of Chemistry, Jinan University, Guangzhou 510632 Department of Chemistry, Hainan Normal College, Haikou 571158 Jinan Univ Dept Chem Guangzhou 510632 Peoples R China Hainan Normal Coll Dept Chem Haikou 571158 Peoples R China

This is the first report of using the microwave heating technique to synthesize calcium sulphide activated by europium whose structure is determined as the face-centered cubic by conventional X-ray powder diffraction method. The phosphor has maximum excitation peaks located at 280 urn and 560 urn and the maximum emission of the phosphor is 630 nm. When the concentration of Eu^(2+) in CaS increases from I .0 × 10^(-5) to l.0 × 10^(-2) mole per mole host, the body colour of the calcium sulphide activated with europium changes from white, through light-red to pink to deep-red. The phosphor obtains the longest afterglow at the concentration of 0.1% Eu^(2+)doped and is a kind of good material excited by sunlight.

关键词： Microwave radiation heating calcium sulphide europium luminescence.

Cell cycle exit and neuronal differentiation 1-engineered embryonic neural stem cells enhance neuronal differentiation and neurobehavioral recovery after experimental traumatic brain injury

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Neural Regeneration Research 2022年第1期17卷 130-136页

作者： Ren Wang Dian-Xu Yang ying-liang liu Jun Ding Yan Guo Wan-Hai Ding Heng-Li Tian Fang Yuan Department of Neurosurgery Shanghai Jiao Tong University Affiliated Sixth People’s HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghaiChina Department of Neurosurgery Shanghai Tenth People’s HospitalTongji UniversityShanghaiChina

Our previous study showed that cell cycle exit and neuronal differentiation 1(CEND1)may participate in neural stem cell cycle exit and oriented ***,whether CEND1-transfected neural stem cells can improve the prognosis of traumatic brain injury remained *** this study,we performed quantitative proteomic analysis and found that after traumatic brain injury,CEND1 expression was downregulated in mouse brain *** days after traumatic brain injury,we transplanted CEND1-transfected neural stem cells into the area surrounding the injury *** found that at 5 weeks after traumatic brain injury,transplantation of CEND1-transfected neural stem cells markedly alleviated brain atrophy and greatly improved neurological *** vivo and in vitro results indicate that CEND1 overexpression inhibited the proliferation of neural stem cells,but significantly promoted their neuronal ***,CEND1 overexpression reduced protein levels of Notch1 and cyclin D1,but increased levels of p21 in CEND1-transfected neural stem *** with CEND1-transfected neural stem cells was superior to similar treatment without CEND1 *** findings suggest that transplantation of CEND1-transfected neural stem cells is a promising cell therapy for traumatic brain *** study was approved by the Animal Ethics Committee of the School of Biomedical Engineering of Shanghai Jiao Tong University,China(approval No.2016034)on November 25,2016.

关键词： cell cycle exit and neuronal differentiation 1 cyclin D1 embryonic neural stem cells neuronal differentiation genetic engineering overexpression mice Notch1 p21 traumatic brain injury

High-capacity porous carbons prepared by KOH activation of activated carbon for supercapacitors

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Chinese Chemical Letters 2014年第6期25卷 865-868页

作者： Yong Xiao Chao Long Ming-Tao Zheng Han-Wu Dong Bing-Fu Lei Hao-Ran Zhang ying-liang liu Department of Applied Chemistry South China Agricultural University

High-performance supercapacitor electrode materials are prepared from the commercially available activated carbon （AC） through a facile and low-cost chemical activation method. The obtained results show that AC activated by KOH with an alkali/carbon ratio of 6/1 （ACK6） possesses a specific surface area of 3405 m^2/g, a large pore volume of 2.01 cm^3/g, and exhibits the highest initial specific capacitance of 335 F/g at the current density of 0.5 A/g in 6 mol/L KOH, and 85% coloumbic efficiency for 5000 cycles at 20 mV/s.

关键词： Carbon materials Amorphous materials Electrical properties

Preparation of the Phosphors BaAl_2O_4:Eu, RE (RE=Dy, Ho) by Microwave Heating Technique and Observation of Long Phosphorescence

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Chinese Chemical Letters 1999年第8期10卷 709-712页

作者： ying liang liu Xiao Ming TANG Xi De CHEN Bing Fu LEI De Xiong FENG (Department of Chcmistry. Jinan University. Guangzhou 510632) Jinan Univ Dept Chem Guangzhou 510632 Peoples R China

The phosphors BaAl2O4: Eu2+. RE (RE=Dy. Ho) have been prepared by the microwave heating technique. The long-lasting phosphorescence in the phosphors of the barium aluminate activated with europium and other rare ear... 详细信息

关键词： Barium aluminate microwave heating technique europium(Ⅱ) Phosphorescence

A NEW KIND OF BLUE-EMITTING PHOSPHOR

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Chinese Chemical Letters 1994年第4期5卷 335-338页

作者： ying liang liu Yuan ying LI Yan Sheng YANG(Deportment of Chemistry, Zhongshan University, Guangzhou 510275)Chun Shan SHI(Laboratory of Rare Earth Chemistry and Physics,Changchun Institute of Apglied Chemistry, Academia Sinica, Changchun 130022)

In the system Na1.67-2xBaxMgo.67Al10.33O17Eu2 + with x equal to 0.50,emission wavelength of Eu2+ is 455um and relative brightness surpasses common blue phosphor BaMgAl10O17 Eu2+, and effective concentra -tion of Eu2+ in the new phosphor is less than that of BaMgAl10O17:Eu2+.It is possible to becone a new phosphor at trichrometric fluorescent powder of rare earthe through further study.

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Growth enhancement effect of BzATP on primary cultured astrocytes from rat brain

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Neuroscience Bulletin 2006年第3期22卷 151-158页

作者： Hua-Zheng liang ying liu Zhu-Rong YE Department of Pathology Shanghai Medical College Fudan University Shanghai 200032 China

Objective To explore whether BzATP could promote the growth of primary cultured astrocytes （AS） of rat and its possible mechanism, and whether TGF-β1 was involved in the event. Methods The primary cultured AS were derived from new born Sprague-Dawley rats. Glial fibrillary acidic protein （GFAP） immunofluorescent stain was used to check the purity of cultured AS. Morphometry was used to detect the changes of AS. The proliferation index of AS was detected by BrdU incorporation assay. Western blot was used to detect the changes of GFAP under different conditions. Changes of TGF-β1 gene transcription were detected by RT-PCR. ELISA was utilized to detect the variation of TGF-β1 protein in the supernate. Results The purity of primary cultured AS reached to 99%. BzATP promoted the hypertrophy of AS including the elongation of AS processes and the enlargement of cell bodies, BzATP also promoted the expression of GFAP in existence of Ca^2＋, but had no effect on cell proliferation. BzATP increased the transcription of TGF-β1 mRNA and the release of TGF-β1 protein in existence of Ca^2＋. TGF-β1 neutralizing antibody partially inhibited the expression of GFAP induced by BzATP, but had no effect on AS proliferation and cell morphology. Conclusion BzATP enhanced the hypertrophy of primary cultured AS, increased the expression of GFAP partially through TGF-β1. Mechanisms of the enhancement of AS growth induced by BzATP other than TGF-β1 pathway remains to be elucidated.

关键词： astrocyte BzATP Ca^2+ TGF-β1

Rayleigh波在饱和半空间中圆形洞室周围的散射

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岩土力学 2017年第8期38卷 2411-2424页

作者：徐颖梁建文刘中宪天津大学建筑工程学院天津300072 天津大学天津市土木工程结构及新材料重点实验室天津300072 天津城建大学天津市软土特性与工程环境重点实验室天津300384

基于Biot的两相介质理论,采用间接边界积分方程法,求解了Rayleigh波在饱和半空间中圆形洞室周围的二维散射问题,分析了入射波频率、孔隙率、边界渗透条件和洞室埋深等参数对地表位移幅值、洞室表面和地表孔隙水压力的影响。研究结果表明... 详细信息

基于Biot的两相介质理论,采用间接边界积分方程法,求解了Rayleigh波在饱和半空间中圆形洞室周围的二维散射问题,分析了入射波频率、孔隙率、边界渗透条件和洞室埋深等参数对地表位移幅值、洞室表面和地表孔隙水压力的影响。研究结果表明,由于圆形洞室的存在,饱和半空间地表位移幅值和地表孔隙水压被明显放大:在透水条件下,水平和竖向位移最大值分别比自由场放大了10.1倍和11.2倍;在不透水条件下,水平和竖向位移最大值分别比自由场放大了12.0倍和9.6倍,地表孔隙水压力放大了2.1~3.0倍。地表位移和孔隙水压力最大值均出现在入射波近端洞室边界附近。随着Rayleigh波入射频率的增大和洞室埋深的增加,地表位移幅值的放大作用有所减小。在相同孔隙率条件下,当入射频率为1.0时,洞室表面孔隙水压力最大;当入射频率为2.0时,洞室表面孔隙水压力最小,洞室表面最大孔隙水压力出现在洞室顶部。

关键词：饱和半空间圆形洞室散射 Rayleigh波间接边界积分方程法

Flexible molecules dedicate to release strain of inverted inorganic perovskite solar cell

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Journal of Energy Chemistry 2025年第1期100卷 87-93页

作者： Hongrui Sun Sanlong Wang Pengyang Wang Yali liu Shanshan Qi Biao Shi ying Zhao Xiaodan Zhang Institute of Photoelectronic Thin Film Devices and Technology Renewable Energy Conversion and Storage Center State Key Laboratory of Photovoltaic Materials and CellsNankai University Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin Haihe Laboratory of Sustainable Chemical Transformations Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)

The tensile strain in inorganic perovskite films induced by thermal annealing is one of the primary factors contributing to the inefficiency and instability of inorganic perovskite solar cells （IPSCs）,which reduces the defect formation ***,a flexible molecule 5-maleimidovaleric acid （5-MVA） was introduced as a strain buffer to release the residual strain of *** anhydride and carboxyl groups in 5-MVA interact strongly with the uncoordinated Pb2+through Lewis acid-base reaction,thus tightly“pull”the perovskite *** in-between soft carbon chain increased the structural flexibility of CsPbI2.85Br0.15perovskite materials,which effectively relieved the intrinsic internal strain of CsPbI2.85Br0.15,resisted the corrosion of external strain,and also reduced the formation of defects such as VIand *** addition,the introduction of 5-MVA improved crystal quality,passivated residual defects,and narrowed energy level ***,power conversion efficiency （PCE） of NiOxbased inverted IPSCs increased from 19.25% to 20.82% with the open-circuit voltage enhanced from 1.164 V to 1.230 *** release of strain also improved the stability of CsPbI2.85Br0.15perovskite films and devices.

关键词： Inverted inorganic perovskite solar cells Flexible molecules Strain release Crystallization Energy barrier High PCE

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公路网布局优化设计的正交枚举法

土木工程学报 2003年第7期36卷 14-17页

作者：陈艳艳梁颖刘小明北京工业大学

在公路总建设投资约束下,以路网综合效益最优为目标,进行满足路网交通需求的布局优化设计。为避免传统方法求解大系统优化问题存在的“组合爆炸”问题,采用正交枚举法作为路网优化的工具,使得计算工作量大大减少,并得到了合理的公路网... 详细信息

在公路总建设投资约束下,以路网综合效益最优为目标,进行满足路网交通需求的布局优化设计。为避免传统方法求解大系统优化问题存在的“组合爆炸”问题,采用正交枚举法作为路网优化的工具,使得计算工作量大大减少,并得到了合理的公路网布局优化决策方案。

关键词：正交枚举法公路网布局优化设计综合效益