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Dimethylamine oxalate manipulating CsPbI_(3) perovskite film crystallization process for high efficiency carbon electrode based perovskite solar cells

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Journal of Energy Chemistry 2024年第6期93卷 221-228,I0006页

作者： Wenran Wang Xin Peng Jianxin Zhang Jiage Lin Rong Huang guizhi Zhang Huishi Guo Zhenxiao Pan Xinhua Zhong Huashang Rao Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou 510642GuangdongChina College of Chemistry and Civil Engineering Shaoguan UniversityShaoguan 512005GuangdongChina Guangdong Provincial Key Laboratory of Utilization and Conservation of Food and Medicinal Resources in Northern Region Shaoguan UniversityShaoguan 512005GuangdongChina

Crystallization process determines the quality of perovskite films and the performances of resultant perovskite solar cells(PSCs).Dimethylamine oxalate has been proven as a multifunctional modulator,and is explored as an efficient additive in manipulating the crystallization process of CsPbI_(3) perovskite *** one hand,oxalate serves as the precipitator that facilitates the nucleation process of *** larger size of intermediate is conductive to the larger size and smaller grain boundaries of resultant *** the other hand,in subsequent annealing process,the phase conversion and growth process of transient perovskite can be decelerated due to the strong interactions of oxalate with both dimethylamine cation(DMA^(+))and Pb^(2+).Due to the optimized crystallization kinetics,the morphology and quality of CsPbI_(3) perovskite films are comprehensively improved with lower defect concentrations,and charge recombination loss is effectively *** from the optimized crystal quality of perovskite films,the carbon electrode-based CsPbI_(3) PSCs exhibit a champion efficiency of 18.48%.This represents one of the highest levels among all hole transport layer-free inorganic perovskite solar cells.

关键词： Solar cells Perovskite CsPbI_(3) Carbon electrodes Oxalate

Coherent Mutually Pumped Phase Conjugation Induced with High-Efficiency by Self-Pumped Phase Conjugate Reflection

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Chinese Physics Letters 1995年第9期12卷 533-536页

作者： SUN Xiudong ZHANG Jingwen ZHOU Zhongxiang XU Kebin HONG Jing JIANG Quanzhong CHEN Huanchu ZHU guizhi Department of Applied Physics Harbin Institute of TechnologyHarbin 150001 Institute of Crystal Materials Shandong UniversityJinan 250100 Dalian Railway College Dalian 116022

A new scheme of coherent mutually pumped phase conjugate(MPPC)reflection that depends on the formation of self-pumped phase conjugate reflection of another beam has been demonstrated in a Cu:KNSBN *** dependences of the MPPC reflectivity on the intensity ratio of the two incident beams and on the incident position of the signal beam were *** obtain phase conjugate reflectivities of greater than 90%at 488nm.

关键词： pumped Efficiency conjugate

Effects of Nutrients on Biofouling Formation and Preponderant Bacteria Diversity in Recirculating Cooling Water System

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China Petroleum Processing & Petrochemical Technology 2010年第4期12卷 57-62页

作者： Ma Tao Liu Fang Zhang guizhi Zhao Chaocheng (College of Chemistry and Chemical Engineering,China University of Petroleum,Qingdao 266555) College of Chemistry and Chemical Engineering China University of Petroleum Qingdao 266555 China

A series of orthogonal array experiments were conducted using carbon source, ammonia nitrogen and total phosphorus （TP） as major influencing factors to investigate the effects of nutrients on biofouling formation and preponderant bacteria diversity in the recirculatiug cooling water system. Carbon source was demonstrated to be the most significant determinant affecting the biofouling formation. A minimum biofouling outcome was obtained when BOD2, NHa＋-N and TP were 25, 10, and 1 mg/L, respectively. Then the preponderant bacteria strains in biofouling mass under two typical culture conditions （negative and favorable） were identified applying both traditional biochemical methods and further molecular biology technology with phylogenetic affiliation analysis, which indicated that Enterobacteriaceae Enterobacter, Micrococcaceae Staphylococcus, Bacillaceae Bacillus, Enterobacteriaceae Proteus, Neisseriaceae Neisseria and Pseudomonadaceae Pseudomonas were dominant under negative condition, while Enterobacteriaceae Klebsiella, Enterobacteriaceae Enterobacter and Microbacterium - under favorable one.

关键词： recirculating cooling water biofouling numerical analysis polymerase chain reaction

Brain Functional Network Improved by Magnetic Stimulation at Acupoints during Mental Fatigue

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Journal of Biomedical Science and Engineering 2016年第10期9卷 65-70页

作者： Shuo yang Na Ai Yanyun Qiao Lei Wang Hongli Yu guizhi Xu Province-Ministry Joint Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin China

To investigate the effects of magnetic stimulation at acupoints on brain functional network during mental fatigue, magnetic stimulation was applied to stimulate SHENMEN (HT7), HEGU (LI4) and LAOGONG (PC8) acupoint in this paper. The brain functional networks of normal state, mental fatigue state and stimulated state were constructed and the characteristic parameters were comparatively studied based on the complex network theory. The results showed that the connection of the network was enhanced by stimulating the HT7, LI4 and PC8 acupoint. In conclusion, magnetic stimulation at acupoints can effectively relieve mental fatigue.

关键词： Magnetic Stimulation Acupoint Electroencephalograph (EEG) Mental Fatigue Brain Functional Network

Cu-clusters nodes of 2D metal-organic frameworks as a cost-effective noble-metal-free cocatalyst with high atom-utilization efficiency for efficient photocatalytic hydrogen evolution

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Chinese Chemical Letters 2022年第6期33卷 3049-3052页

作者： Guangmei Jiang Xingyan Liu Huilong Jian Peng Lu Jinwu Bai guizhi Zhang Wen Yun Siqi Li Youzhou He Chongqing Key Laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

Several 2D nanosheets of porphyrin MOFs with various transition-metal clusters as metal nodes were prepared via a simple solvothermal method to apply in the photocatalytic hydrogen evolution,in which the hydrogen production rate of the optimal NS-Cu was as high as 15.39 mmol g^(-1)h^(-1).A series of experimental technologies especially cyclic voltammetry(CV)and Mott-Schottky(M-S)had been adopted to investigate the charge-transfer property of photo-generated electron-hole pairs,it was found that the uniformly dispersed Cu-clusters nodes in the original 2D MOFs played a key role in the electron transfer process,that was,the photo-generated electron transferred from excited state eosin-Y to the Cu-clusters nodes for the efficient hydrogen *** excellent photocatalytic performance could be attributed to the reversible oxidation-–reduction process of Cu^(Ⅱ)/Cu^(Ⅰ),which had excellent electron-receiving and electron-outputting *** results provided a novel avenue to adapt the uniformly dispersed metal nodes in the original MOFs as cost-effective noble-metal-free cocatalysts with very high atomutilization efficiency to improve the photocatalytic hydrogen evolution performance in dye-sensitized system.

关键词： 2D nanosheets Photocatalytic hydrogen production Cu-clusters nodes Cu^(Ⅱ)/Cu^(Ⅰ) Cocatalysts

Self-assembled multifunctional DNA nanoflowers for the circumvention of multidrug resistance in targeted anticancer drug delivery

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Nano Research 2015年第11期8卷 3447-3460页

作者： Lei Mei guizhi Zhu Liping Qiu Cuichen Wu Huapei Chen Hao Liang Sena Cansiz Yifan Lv Xiaobing Zhang Weihong Tan Molecular Sciences and Biomedicine Laboratory State Key Laboratory for Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering College of Biology Collaborative Innovation Center for Chemistry and Molecular Medicine Hunan University Changsha 410082 China Departments of Chemistry Physiology and Functional Genomics Center for Research at the Bio/Nano Interface Shands Cancer Center UF Genetics Institute and McKnight Brain Institute University of Florida Gainesville FL 32611-7200 USA Laboratory of Molecular Imaging and Nanomedicine National Institute of Biomedical Imaging and Bioengineering National Institutes of Health Bethesda MD 20892 USA

Cancer chemotherapy has been limited by its side effects and multidrug resistance （MDR）, the latter of which is partially caused by drug efflux from cancer cells. Thus, targeted drug delivery systems that can circumvent MDR are needed. Here, we report multifunctional DNA nanoflowers （NFs） for targeted drug delivery to both chemosensitive and MDR cancer cells that circumvented MDR in both leukemia and breast cancer cell models. NFs are self-assembled via potential co-precipitation of DNA and magnesium pyrophosphate generated by rolling circle replication, during which NFs are incorporated using aptamers for specific cancer cell recognition, fluorophores for bioimaging, and doxorubicin （Dox）- binding DNA for drug delivery. NF sizes are tunable （down to N200 nm in diameter）, and the densely packed drug-binding motifs and porous intrastructures endow NFs with a high drug-loading capacity （71.4%, wt/wt）. Although the Dox- loaded NFs （NF-Dox） are stable at physiological pH, drug release is facilitated under acidic or basic conditions. NFs deliver Dox into target chemosensitive and MDR cancer cells, preventing drug efflux and enhancing drug retention in MDR cells. NF-Dox induces potent cytotoxicity in both target chemosensitive cells and MDR cells, but not in nontarget cells, thus concurrently circumventing MDR and reducing side effects. Overall, these NFs are promising tools for circumventing MDR in targeted cancer therapy.

关键词： aptamer rolling circle replication self-assembly DNA nanotechnology multidrug resistance targeted cancer therapy

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乌帕替尼治疗20甲营养不良一例

中国麻风皮肤病杂志 2025年第1期41卷 66-68页

作者：吴恺悦刘鑫洲陈学超周桂芝刘国艳山东第一医科大学附属皮肤病医院山东济南250022 山东省皮肤病性病防治研究所山东济南250022

20甲营养不良(twenty-nail dystrophy,TND)是一种病因不明的甲损害,累及所有指/趾甲,可能由遗传因素及免疫系统异常而诱发。本病目前尚缺乏标准的治疗方案,传统治疗往往起效慢,不良反应明显。本文报道JAK-STAT抑制剂乌帕替尼治疗TND有... 详细信息

20甲营养不良(twenty-nail dystrophy,TND)是一种病因不明的甲损害,累及所有指/趾甲,可能由遗传因素及免疫系统异常而诱发。本病目前尚缺乏标准的治疗方案,传统治疗往往起效慢,不良反应明显。本文报道JAK-STAT抑制剂乌帕替尼治疗TND有效一例,患者口服乌帕替尼片15 mg/d,6个月后甲全部新生,减量至15 mg/2d;治疗8个月后,所有甲基本恢复正常。

关键词： 20甲营养不良乌帕替尼 JAK抑制剂

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不同肉色薄皮甜瓜糖积累变化规律

北方园艺 2016年第20期 22-27页

作者：李响王玲聂鑫韩墨张萌靳亚忠 yang Sheng ZHANG guizhi 黑龙江八一农垦大学农学院黑龙江大庆163319 College of Agronomy Heilongjiang Bayi Agricultural University

以黑龙江八一农垦大学农学院甜瓜育种课题组自行培育的黄肉H86、清白肉Q94、白肉B99、橘黄肉J149和绿色肉L168这不同肉色自交系品种为试材,测定了不同发育时期果实中的蔗糖、葡萄糖、果糖含量以及蔗糖合成酶(SS)、蔗糖磷酸合成酶(SPS)... 详细信息

以黑龙江八一农垦大学农学院甜瓜育种课题组自行培育的黄肉H86、清白肉Q94、白肉B99、橘黄肉J149和绿色肉L168这不同肉色自交系品种为试材,测定了不同发育时期果实中的蔗糖、葡萄糖、果糖含量以及蔗糖合成酶(SS)、蔗糖磷酸合成酶(SPS)、酸性转化酶(AI)及中性转化酶(NI)等糖代谢相关酶的活性变化,并对甜瓜果实糖积累的生理机制进行了系统分析。结果表明:H86果实蔗糖合成酶活性与蔗糖积累量紧密相关,30d蔗糖含量到达峰值,属蔗糖积累型;Q94果实内高水平的酸性转化酶活性对葡萄糖、果糖积累以及促进果实形态的构建有着重要意义,属还原糖积累类型;B99整个发育期蔗糖合成酶活性、蔗糖磷酸合成酶活性、酸性转化酶活性和中性转化酶活性一直保持较高水平,在花后25d活性均处于首位,属蔗糖积累类型;B99幼果期葡萄糖含量较高,蔗糖积累量在果实整个的生长发育期内都保持上升趋势直至成熟,果糖积累量与蔗糖合成酶活性及中性转化酶活性相关,该自交系品种属于蔗糖积累类型;J149果实内葡萄糖和果糖均在花后25d时开始积累直至成熟,成熟时葡萄糖含量居于首位,果糖合成升高与中性转化酶活性上升有关,属还原性糖积累型;L168成熟果实内蔗糖含量居于首位,果实内酸性转化酶活性和中性转化酶活性的变化对甜瓜果实品质形成有着重要的意义,属于蔗糖积累型。

关键词：果肉颜色薄皮甜瓜糖及糖相关酶

Design of Transformer Magnetic Bias Protection Device in High Power Electronic Equipments

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Journal of Electrical Engineering 2014年第2期2卷 75-81页

作者： Xi Lei guizhi Xu Zhanfeng Deng Power Electronics Department State Grid Smart Grid Research Institute Beijing 102200 China

As the power electronics technology is widely used in the power system, it may also bring the DC component to the transformer operation, resulting in DC bias and may cause great harm to the transformer. In this article, the device to protect transformer from DC magnetic bias is designed. On the basis of load DC current, a magnetic bias protection device is developed by combination of current sensor, electric information collection circuit, signal filtering circuit, signal modulating circuits, fault feature judging circuit, automatic range tracking circuit, intelligent logic synthesis unit and implementation output circuit. By operating in temperature-rise test equipment in the high power electronic lab, the device is proved with reliability, high sensitivity and worthy of promotion and application.

关键词： Power electronic device transformer magnetic bias protection design.