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Dispersion of ZnO Nanocrytals in Co-solvent and Its Application in Photovoltaic Material

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Chemical Research in Chinese Universities 2011年第6期27卷 906-909页

作者： chen shao-jie ZHANG Qiu-yu ZHANG Jun-ping GU Jun-wei ZHOU Jian SHI You-qiang Key Laboratory of Space Materials Science and Technology Ministry of Education School of Science Northwestern Polytechnical University Xi＇an 710129 P. R. China

To overcome the aggregation of nanocrystals in a blend of inorganic material with conjugated polymers to prepare photovoltaic material, we used a co-solvent blend of CHCl3 with MeOH at a certain volume fraction to disperse inorganic nanocrystals. The results show that when the volume fraction of MeOH is 50%, ZnO nanocrystals with an average diameter of 30 nm disperse well in the co-solvent solution. Its application in photovoltaic material was investigated in this work, and the photoluminescence（PL） spectra show that when ZnO was 50%（volume fraction） in solution and 25%（volume fraction） in film, the fluorescence quenching reached the maximum values 83.34% and 64.4%, respectively, indicating that electron could transfer from conjugated polymer to electron-acceptor ZnO effectively.

关键词： ZnO nanocrystal Dispersion Co-solvent Photovoltaic material

Research on mine noise sources analysis based on least squares wave-let transform

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Journal of Coal Science & Engineering(China) 2010年第4期16卷 394-399页

作者： chenG Gen-yin YU Sheng-chen chen shao-jie WEI Zhi-yong ZHANG Xiao-chen College of Safety Engineering North China Institute of Science and Technology Beijing 101601 China College of Computer Science North China Institute of Science and Technology Beijing 101601 China Environment Noise and Vi-bration Control Technology Center Beijing Municipal Institute of Labour Protection Nanjing 210096 China

In order to determine the characteristics of noise source accurately, the noisedistribution at different frequencies was determined by taking the differences into accountbetween aerodynamic noises, mechanical noise, electrical noise in terms of in frequencyand *** a least squares wavelet with high precision and special effects forstrong interference zone (multi-source noise), which is applicable to strong noise analysisproduced by underground mine, and obtained distribution of noise in different frequencyand achieves good *** to the results of decomposition, the characteristicsof noise sources production can be more accurately determined, which lays a good foundationfor the follow-up focused and targeted noise control, and provides a new methodthat is greatly applicable for testing and analyzing noise control.

关键词： noise source noise control wavelet transform least squares wavelet

Stress evolution of deep surrounding rock under characteristics of bi-modulus and strength drop

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Journal of Central South University 2022年第2期29卷 680-692页

作者： chen shao-jie ZHAO Zeng-hui FENG Fan ZHANG Ming-zhong College of Energy and Mining Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Strata Intelligent Control and Green Mining Co-founded by Shandong Province and the Ministry of Science and Technology Shandong University of Science and TechnologyQingdao 266590China

Aiming at the circular chamber under uniform stress field in deep energy storage and mining,analytical solutions of stress and plastic zone of the surrounding rock under different far-field stress and internal pressure were derived based on bi-modulus theory and the elastic-brittle-ideal plastic constitutive *** trend of the elasticplastic stress and plastic region with different elastic constant ratios and residual strength coefficients were analyzed in *** revealed that when the internal pressure was small,the three-direction principal stress was compressive stress and the stress field distribution of the surrounding rock was not affected by the moduli *** obtained solution was consistent with the solution from the elastic-brittle plastic drop model under the equal modulus *** the other hand,when the internal pressure was large,the tangential stress was *** surrounding rock can be divided into three zones,i.e.,tensile plastic zone(TPZ),tensile elastic zone(TEZ)and compressive elastic zone(CEZ).The tensile and compressive dual modulus had significant influence on the demarcation point between TEZ and *** addition,the strength drop and the dual modulus characteristic had a coupling effect on the stress distribution in the surrounding *** related achievements further enrich the theory of deep rock mechanics.

关键词： deep surrounding rock bi-modulus strength drop stress evolution

Renal denervation for ＂resistant ventricular tachycardia＂： a potential treatment option？

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Chinese Medical Journal 2013年第21期126卷 4199-4200页

作者： chen shao-jie chen Wei-jie Su Li Ling Zhi-yu Liu Zeng-zhang Yin Yue-hui Chongqing Med Univ Clin Inst 2 Affiliated Hosp 2 Dept CardiolChongqing Arrhythmia Diag & Therapeu Chongqing 400010 Peoples R China

To the editor： Recent evidence shows that renal sympathetic denervation can perform a promising role in attenuating the over-activity of sympathetic nerve system and treat related diseases A 42 years old male patien... 详细信息

关键词： Renal denervation resistant ventricular tachycardia a potential treatment option

AE waveform characteristics of rock mass under uniaxial loading based on Hilbert-Huang transform

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Journal of Central South University 2021年第6期28卷 1843-1856页

作者： LI Xue-long chen shao-jie LIU Shu-min LI Zhong-hui Mine Disaster Prevention and Control-Ministry of State Key Laboratory Breeding Base Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China College of Energy and Mining Engineering Shandong University of Science and TechnologyQingdao 266590China State Key Laboratory of Coal Mine Disaster Dynamics and Control College of Resource and Safety EngineeringChongqing UniversityChongqing 400030China

Acoustic Emission(AE)waveforms contain information on microscopic structural features that can be related with damage of coal rock *** this paper,the Hilbert-Huang transform(HHT)method is used to obtain detailed structural characteristics of coal rock masses associated with damage,at different loading stages,from the analyses of the characteristics of AE *** results show that the HHT method can be used to decompose the target waveform into multiple intrinsic mode function(IMF)components,with the energy mainly concentrated in the c1−c4 IMF components,where the c1 component has the highest frequency and the largest amount of *** the loading continues,the proportion of energy occupied by the low-frequency IMF component shows an increasing *** the initial compaction stage,the Hilbert marginal spectrum is mainly concentrated in the low frequency range of 0−40 *** plastic deformation stage is associated to energy accumulation in the frequency range of 0−25 kHz and 200−350 kHz,while the instability damage stage is mainly concentrated in the frequency range of 0−25 *** 20 kHz,the instability damage reaches its maximum *** is a relatively clear instantaneous energy peak at each stage,albeit being more distinct at the beginning and at the end of the compaction *** the effective duration of the waveform is short,its resulting energy is small,and so there is a relatively high value from the instantaneous energy *** waveform lasts a relatively long time after the peak that coincides with failure,which is the period where the waveform reaches its maximum energy *** Hilbert three-dimensional energy spectrum is generally zero in the region where the real energy is *** addition,its energy spectrum is intermittent rather than *** is therefore consistent with the characteristics of the several dynamic ranges mentioned above,and it indicates more clearly the low-frequency energy concentration in the critical sta

关键词： acoustic emission waveform Hilbert-Huang transform coal rock

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煤岩全应力应变过程渗透性特征试验研究

岩土力学 2007年第2期28卷 381-385页

作者：杨永杰宋扬陈绍杰山东科技大学矿山灾害预防控制省部共建教育部重点实验室青岛266510

在MTS815岩石伺服试验机上进行了煤岩全应力-应变过程中的渗透性试验,揭示了煤岩在变形破坏过程中的渗透率变化规律。试验结果表明,应变-渗透率曲线与应力-应变曲线变化趋势基本一致,但表现出相对“滞后”的特点,表明渗透率的变化与其... 详细信息

在MTS815岩石伺服试验机上进行了煤岩全应力-应变过程中的渗透性试验,揭示了煤岩在变形破坏过程中的渗透率变化规律。试验结果表明,应变-渗透率曲线与应力-应变曲线变化趋势基本一致,但表现出相对“滞后”的特点,表明渗透率的变化与其损伤演化过程密切相关,同时煤体通过其内部裂隙的渗透需要一定的时间过程。同其他沉积岩石相比,煤岩微结构及微组分复杂多样,不同煤岩类型其渗透率相差很大。同时,由于煤岩微孔隙裂隙相对较发育,其渗透率受有效围压的影响更明显。

关键词：煤岩全应力-应变过程渗透率围压

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三轴压缩煤岩强度及变形特征的试验研究

煤炭学报 2006年第2期31卷 150-153页

作者：杨永杰宋扬陈绍杰山东科技大学资源与环境工程学院山东青岛266510

在MTS815岩石伺服试验机上对鲍店煤矿3煤进行了常规三轴压缩试验,并对试验结果进行了分析.结果表明:煤岩由于含有大量的微孔隙裂隙,在围压作用下,孔隙裂隙被压密闭合,弹性模量随之增大,但并非呈线性关系.在常规三轴压缩条件下,煤样三轴... 详细信息

在MTS815岩石伺服试验机上对鲍店煤矿3煤进行了常规三轴压缩试验,并对试验结果进行了分析.结果表明:煤岩由于含有大量的微孔隙裂隙,在围压作用下,孔隙裂隙被压密闭合,弹性模量随之增大,但并非呈线性关系.在常规三轴压缩条件下,煤样三轴压缩强度与围压之间呈线性关系(不包括单轴压缩情况),在实验的围压范围内,煤岩破坏符合Coulomb强度准则,但由于煤样具有明显的非均质特性,其内部含有大量的随机裂隙等缺陷,且煤样黏聚力较低,煤样沿随机裂隙破裂偏离θ=45°+/2的可能性很大.

关键词：三轴压缩试验煤岩强度变形特征围压

Effect of IL-18 on peripheral blood mononuclear cells of chronic hepatitis B and hepatitis B virus DNA released by HepG2.2.15 cell lines

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Hepatobiliary & Pancreatic Diseases International 2004年第2期3卷 230-234页

作者： Ying Sun, Huan-Yong chen and shao-jie Xin Harbin, China Department of Infectious Diseases, First Clinical Col- lege, Harbin Medical University, Harbin 150001 , China Department of Infectious Diseases First Clinical College Harbin Medical University Harbin 150001 China.

BACKGROUND: Interleukin-18 (IL-18), a pro-inflamma- tory cytokine that induces interferon-γ (IFN-γ) production in T cells and natural killer cells, plays a critical role in the T-lymphocyte helper type 1 ( Th1) response. This study was designed to explore the effect of IL-18 on peripheral blood mononuclear cells ( PBMCs) derived from chronic hepatitis B (CHB) and on hepatitis B virus (HBV) DNA released by HepG2.2.15 cell lines, which were transfected with hepatitis B virus gene in vitro. METHODS: PBMCs isolated from 25 healthy people and 25 patients with CHB were stimulated with HBcAg and IL-18 of various concentrations for 72 hours. The levels of IFN-γ in the supernatants of cultured PBMCs were determined by ELISA. After the stimulation of IL-18 of various concentra- tions, PBMCs derived from one patient were co-cultured for 96 hours with HepG2. 2. 15 cells which had been cul- tured for 24 hours, and then the supernatants were collected by centrifugation and used for HBV DNA quantitative as- say. RESULTS: When PBMCs were stimulated by HBcAg and IL-18 at various concentrations, the levels of IFN-γ in the supernatants of CHB groups were much higher than those in normal control groups, at 0.2 ng/ml: t =11.70, P0.05). The content of HBV DNA in the superna- tant of co-cultivation of HepG2. 2. 15 cells and PBMCs without stimulated materials was higher than that stimula-ted by HBcAg and EL-18 at various concentrations of HBc- Ag and IL-18 together with IL-12/IFN-α1lb. CONCLUSION: DL-18 can induce IFN-γ secretion and pro- bably play a key role in the modulation of both innate and ada

关键词： interleukin-18 chronic hepatitis B peripheral blood mononuclear cells HepG2.2.15 cells interferon-γ HBV DNA

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煤岩蠕变模型与破坏特征试验研究

岩土力学 2009年第9期30卷 2595-2598,2622页

作者：陈绍杰郭惟嘉杨永杰山东科技大学矿山灾害预防控制省部共建教育部重点实验室青岛266510

在MTS岩石伺服试验机上对山东某矿3煤进行了短时流变试验,并对试验结果进行了分析。结果表明:该煤岩蠕变门槛系数为0.915、流变系数为0.383;煤岩流变破坏呈现空间不均匀性,整体以塑性破坏为主,但存在剪切主导破坏面;煤岩流变过程中有微... 详细信息

在MTS岩石伺服试验机上对山东某矿3煤进行了短时流变试验,并对试验结果进行了分析。结果表明:该煤岩蠕变门槛系数为0.915、流变系数为0.383;煤岩流变破坏呈现空间不均匀性,整体以塑性破坏为主,但存在剪切主导破坏面;煤岩流变过程中有微破裂破坏即损伤存在,并且这种损伤在较低的应力水平就有所发生,大量微破坏的积累与贯通导致了煤岩试件破坏;煤岩蠕变过程中不仅存在损伤软化,而且存在蠕变硬化,蠕变的过程取决于这两种机制竞争的综合结果;可以用3次多项式经验蠕变模型较好地描述该煤岩的蠕变特性,西原模型可以较好地描述该煤岩的初始蠕变和等速蠕变阶段,但不能描述加速蠕变阶段。

关键词：煤岩短时蠕变试验破坏特征微破裂蠕变模型