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A luminescence molecular switch via modulation of PET and ICT processes in DCM system

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Science China Chemistry 2017年第5期60卷 607-613页

作者： Jinfeng Yang Meng Li lihua kang Weihong Zhu Shanghai Key Laboratory of Functional Materials Chemistry Key Laboratory for Advanced Materials and Institute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan College of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832000China School of Environmental Science and Engineering North China Electric Power UniversityBaoding 071003China

A novel versatile dicyanomethylene-4H-pyran （DCM） based derivative bearing ferrocenyl group （DCM-N-Fc） is designed as modulator to construct ＂off-on＂ logic operation. The optical properties of DCM-N-Fc are characterized by absorption and steady-state fluorescence technique, showing that the fluorescence from DCM ehromophore via intramolecular charge transfer （ICT） is strongly quenched by photoinduced electron transfer （PET） process from ferrocene moiety. In contrast with the references （DCM-N and DCM-Fc）, the fluorescence of DCM-N-Fc can be triggered by oxidizing ferrocenyl unit either chemically or electrochemically, exhibiting a characteristic emission modulation at around 610 nm with an electrofluorochromic behavior. Furthermore, the free energy and the fluorescence lifetime in the PET path verify the thermodynamic feasibility. Cyclic voltammetry, absorption spectroscopy, time-resolved fluorescence as well as DFT calculation have been used to elaborate the manipulation via both PET and ICT processes.

关键词： dicyanomethylene-4H-pyran luminescence redox switch ferrocene

CLDASSD:Reconstructing Fine Textures of the Temperature Field Using Super-Resolution Technology

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Advances in Atmospheric Sciences 2022年第1期39卷 117-130页

作者： Ruian TIE Chunxiang SHI Gang WAN Xingjie HU lihua kang Lingling GE Institute of Aerospace Information Space Engineering UniversityBeijing 101400China National Meteorological Information Center China Meteorological AdministrationBeijing 100081China

Before 2008,the number of surface observation stations in China was ***,the surface observation data were too sparse to effectively support the High-resolution China Meteorological Administration’s Land Assimilation System(HRCLDAS)which ultimately inhibited the output of high-resolution and high-quality gridded *** paper proposes a statistical downscaling model based on a deep learning algorithm in super-resolution to research the above ***,we take temperature as an *** model is used to downscale the 0.0625°×0.0625°,2-m temperature data from the China Meteorological Administration’s Land Data Assimilation System(CLDAS)to 0.01°×0.01°,named *** performed quality control on the paired data from CLDAS and HRCLDAS,using data from 2018 and *** was trained on the data from 31 March 2018 to 28 February 2019,and then tested with the remaining ***,extensive experiments were conducted in the Beijing-Tianjin-Hebei region which features complex and diverse *** the HRCLDAS product and surface observation data as the"true values"and comparing them with the results of bilinear interpolation,especially in complex terrain such as mountains,the root mean square error(RMSE)of the CLDASSD output can be reduced by approximately 0.1℃,and its structural similarity(SSIM)was approximately 0.2 *** can estimate detailed textures,in terms of spatial distribution,with greater accuracy than bilinear interpolation and other sub-models and can perform the expected downscaling tasks.

关键词： statistical downscaling deep learning temperature field high-resolution reconstruction

An intelligent near-infrared light activatable nanosystem for accurate regulation of zinc signaling in living cells

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Nano Research 2017年第9期10卷 3068-3076页

作者： Wei Li Zhen Liu Zhaowei Chen lihua kang Yijia Guan Jinsong Ren Xiaogang Qu Laboratory of Chemical Biology and State Key Laboratory of Rare Earth Resources Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China University of Chinese Academy of Sciences Beijing 100039 China Stem Cell and Cancer Center First Affiliated Hospital Jilin University Changchun 13000 I China

Accurate regulation of cellular zinc signaling is imperative to decipher underlying zinc functions and develop new therapeutic agents. However, the ability to modulate zinc in a spatiotemporal manner remains elusive. We herein report an intelligent spiropyran-upconversion (SP-UCNPs) based nanosystem that enables near-infrared (NIR) light-controlled zinc release at precise times and locations. The magnitude of zinc release can be simply manipulated by varying the duration of NIR irradiation. Moreover, the utilization of NIR light not only showed little damage to cells but also significantly improved penetration depth. By evaluating activity of a model protein, phosphatase 2A, we further validated zinc signaling activation. Importantly, our strategy may be broadly applicable to other types of metal ions, like the ubiquitous second messenger calcium. More importantly, our strategy can potentially enable the precise control of specific signaling pathways of metal ions while minimizing cellular damage, facilitating the advanced manipulation of cellular dynamics.

关键词： nanocarrier zinc upconversion spiropyran cellular manipulation

木麻黄根瘤内生菌——弗兰克氏菌对青枯病菌的抑制作用研究

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林业科学研究 1999年第1期12卷 42-46页

作者：康丽华中国林业科学研究院热带林业研究所

试验结果揭示了木麻黄弗兰克氏菌和木麻黄根瘤浸提液能抑制青枯菌生长，弗兰克氏菌Ｏｒ９３０２和９０２１菌株的抑菌效果比其它供试菌株高；粗枝木麻黄的根瘤浸提液抑菌效果较山地木麻黄和普通木麻黄的抑菌效果好。

关键词：木麻黄弗兰克氏菌抑菌效果青枯病菌微生物

Annealed Nanodiamonds with Varied sp2/sp3 Ratio as Metal-Free for Acetylene Hydrochlorination

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Annealed Nanodiamonds with Varied sp2/sp3 Ratio as Metal-Fre...

第十届全国催化剂制备科学与技术研讨会（成都）

作者： Fangjie Lu Jian Wang lihua kang Mingyuan Zhu School of Chemistry and Chemical Engineering of Shihezi University Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan

In this paper, we discussed the influence mechanism of annealed nanodiamonds with varied sp/sp Ratio as Metal-Free for acetylene hydrochlorination. Nano diamond powder was precursor;the nonmetal catalyst which had different sp/sp ratio was made through different heat treatment. The catalyst showed good catalytic activity and stability for acetylene hydrogenchloride.

关键词： acetylene hydrogenchloride carbon materials hybrid approach

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影响会计信息质量的因素分析

生产力研究 2007年第20期 134-135页

作者：亢丽华朱东星北京住总集团第三开发建设有限公司北京100037 北京联合大学师范学院北京100011

文章从会计信息的各个环节入手,通过考察会计信息的"生产"过程,来分析影响会计信息质量的因素,揭示出会计从业人员的专业水平和企业负责人对会计业务的干预等是影响会计信息质量的主要因素。从而提出完善会计内部控制、提高会计人员的... 详细信息

文章从会计信息的各个环节入手,通过考察会计信息的"生产"过程,来分析影响会计信息质量的因素,揭示出会计从业人员的专业水平和企业负责人对会计业务的干预等是影响会计信息质量的主要因素。从而提出完善会计内部控制、提高会计人员的素质以及建立权力约束机制等是提高会计信息质量的有效途径。

关键词：会计信息质量影响因素会计制度

H_2S为毒物对乙炔氢氯化反应中AuCl_3/AC催化剂催化活性的影响

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化工学报 2015年第9期66卷 3476-3482页

作者：代斌张春丽康丽华朱明远石河子大学化学化工学院新疆兵团化工绿色过程重点实验室新疆石河子832003

采用等体积浸渍法制备了1%AuCl3/AC催化剂,探究了硫化氢(H2S)为毒物对乙炔氢氯化反应中催化剂催化活性的影响及失活机理。催化活性测试结果表明,以H2S为毒物可导致乙炔氢氯化反应中的AuCl3/AC催化剂的失活,且是一个不可逆过程;程序升温... 详细信息

采用等体积浸渍法制备了1%AuCl3/AC催化剂,探究了硫化氢(H2S)为毒物对乙炔氢氯化反应中催化剂催化活性的影响及失活机理。催化活性测试结果表明,以H2S为毒物可导致乙炔氢氯化反应中的AuCl3/AC催化剂的失活,且是一个不可逆过程;程序升温还原(TPR)和X射线光电子能谱(XPS)分析结果表明,H2S的加入可有效地加快Au3+还原为Au0;透射电镜能谱(TEM-EDX)观测分析形成的Au-S化合物也可导致催化剂失活,即随着H2S量的增大,更多的Au3+被还原为Au0,且形成的Au-S化合物覆盖在活性位点,使有效的活性组分降低进而导致AuCl3/AC催化剂失活。

关键词： H2S AuCl3/AC 催化失活机理乙炔氢氯化

植物促生菌对桉树幼苗生长及其氮素来源的影响

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热带作物学报 2016年第12期37卷 2256-2260页

作者：袁辉林康丽华海南省现代农业检验检测预警防控中心海南海口570203 中国林业科学研究院热带林业研究所广东广州510520

利用^(15)N稳定性同位素示踪法,研究施氮水平对接种或不接种植物促生菌的桉树幼苗生物量、N和P吸收量及其吸收氮素来源的影响。结果表明:随着施氮量的增加,桉树幼苗植株生物量、N和P吸收量均显著增加。接种PGPR SZ7-1植物促生菌能显著... 详细信息

利用^(15)N稳定性同位素示踪法,研究施氮水平对接种或不接种植物促生菌的桉树幼苗生物量、N和P吸收量及其吸收氮素来源的影响。结果表明:随着施氮量的增加,桉树幼苗植株生物量、N和P吸收量均显著增加。接种PGPR SZ7-1植物促生菌能显著促进桉树幼苗生物量的增加和养分量的吸收。未接种植物促生菌的桉树幼苗,其植株吸收氮素主要来源于土壤,其次是肥料;而接种PGPR SZ7-1植物促生菌的桉树幼苗,其植株吸收的氮素则主要来源于生物固氮。PGPR SZ7-1植物促生菌具有较好的固氮能力,固氮率达40%以上。结果还显示,随着施氮量的增加,接种植物促生菌的桉树幼苗生物固氮能力下降,植株氮素主要来源于土壤氮,其次为生物固氮和肥料氮。在较低的氮素水平下,接种植物促生菌能有效促进桉树植株的生长发育和养分吸收,是一种减少肥料施用、保护生态环境的农业措施之一。

关键词：桉树 PGPR SZ7-1 氮素 15N示踪

钢纤维增强十字形异形柱中节点的抗震性能试验

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世界地震工程 2012年第2期28卷 142-147页

作者：戎贤康丽华李艳艳河北工业大学土木工程学院天津300401 河北科技大学建筑工程学院河北石家庄050018

针对异形柱节点的薄弱特性,通过在节点处掺加钢纤维,对比了钢纤维增强的异形柱中节点和未掺加钢纤维的普通混凝土异形柱中节点的破坏特征、承载力、延性、滞回性能和刚度退化等抗震性能指标。结果表明:钢纤维增强的异形柱节点试件承载... 详细信息

针对异形柱节点的薄弱特性,通过在节点处掺加钢纤维,对比了钢纤维增强的异形柱中节点和未掺加钢纤维的普通混凝土异形柱中节点的破坏特征、承载力、延性、滞回性能和刚度退化等抗震性能指标。结果表明:钢纤维增强的异形柱节点试件承载力明显提高,节点核心区破坏程度明显较轻,加载后期,刚度保持效果有明显改善,说明钢纤维可以提高异形柱节点的抗震能力。

关键词：异形柱节点低周反复加载钢纤维抗震性能