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Benzoylformamides as new photocaged bases for photo-latent anion polymerization

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Chinese Chemical Letters 2015年第1期26卷 21-25页

作者： ming-Hui He Mei-Lin Su Zhao-Hui Yu Guang-xue Chen Zhao-Hua zeng Jian-Wen Yang State Key Laboratory of Pulp & Paper Engineering South China University of Technology Institute of Polymer Science DSAPM LabSchool of Chemistry and Chemical EngineeringSun Yat-Sen University

Benzoylfonnamide（BFA） derivatives are proposed as new photocagcd bases with good solubility in epoxy *** their structures were confirmed by ~1H NMR,^（13）C NMR,and elemental ***,we detail their thermal stability,solubility behavior,and photolysis ***,the model photo-latent anion polymerization（AP） of epoxide system in the presence of BFA-dBA（N,N-dibenzyl-2-oxo-2-phenylacetamide） as a photocaged base has been investigated,and excellent photopolymerization profile is obtained.

关键词： Anion polymerization Photocaged superbase Photopolymerization

COSMIC GPS observations of topographic gravity waves in the stratosphere around the Tibetan Plateau

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Science China Earth Sciences 2017年第1期60卷 188-197页

作者： zeng XuanYun xue XiangHui DOU XianKang LIANG Chen JIA mingJiao Chinese Academy of Sciences Key Laboratory of Geospace Environment School of Earth and Space Sciences University of Science and Technology of China Hefei 230026 China

Temperature profiles provided by the Constellation Observing System for Meteorology, Ionosphere and Climate （COSMIC） global positioning system （GPS） satellite constellation were used to study an eight-year series （2007 to 2015） of gravity wave （GW） potential energy in the stratosphere （18-30 kin） around the Tibetan Plateau （TP）. We found that with increasing altitude, the GW potential energy （Ep） values in the stratosphere caused by convection decreases. The importance of GWs that are stimulated by topography is enhanced in this area. In the TP, which was considered to lack strong topographical GW activity, clear activity existed in the spring and winter of all studied years. Based on the latitudinal zone of the TP, the distribution of GW potential energy is highly consistent with the elevation of the local topography. The activities of topographical GWs are strongly filtered as they propagate upward to the area of zero speed wind. The analysis indicates that in the TP, clear orographic GW excitation exists and propagates upward to the upper stratosphere, where it is greatly influenced by the wind.

关键词： Tibetan Plateau Gravity wave Stratosphere Topography Filtering of wind

Summary of technology for a comprehensive geophysical exploration of gold mine in North China Craton

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Science China Earth Sciences 2021年第9期64卷 1524-1536页

作者： Qingyun DI Guoqiang xue Da LEI Qingdong zeng Changmin FU Zhiguo AN CAS Engineering Laboratory for Deep Resources Equipment and Technology Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Key Laboratory of Shale Gas and Geoengineering Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing100049China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing100029China

The North China Craton is the oldest continental block,and has suffered from large-scale lithospheric thinning and destruction,which in turn led to gold deposits in northern *** decratonic gold deposits in the North China Craton became the most important gold deposits in China,and geophysical methods are key means to detect and discover gold deposits *** this paper,based on the geological and petrophysical characteristics of the North China Craton,the geological model of the decratonic gold deposits is transformed into a geophysical *** present,two methods of geophysical exploration of decratonic gold deposits are in use:rapid and efficient exploration on the scale of the ore concentration area,and large depth exploration on the scale of the deposit *** detail,the airborne electromagnetic,magnetic and gravity methods are used to detect the shallow(1,500 m)anomaly area on the scale of the ore concentration *** the ground-controlled source electromagnetic and ground magnetotelluric methods,explorations for targets at significant depth(5,000 m)are carried out in the mining ***,taking the Liaodong ore concentration area as an example,geophysical methods are used to discover two prospecting areas around the Jianshanzi Fault in the Qingchengzi ore concentration area,Baiyun-Xiaotongjiapuzi deep prospecting area,and Qingchengzi deep prospecting ***,three prospecting areas are delineated around the Jixingou Fault in the Wulong mining area,Wulong deep prospecting area,Weishagou deep prospecting area,and Chang’an deep prospecting *** anomalies in the ore concentration area and mining area are revealed by means of three-dimensional exploration methods,thereby providing technical support for the exploration of metal minerals such as decratonic gold deposits.

关键词： Decratonic gold deposits in the North China Craton Liaodong area Integrated geophysics Mining area scale Deposit area scale

Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells

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Chinese Journal of Polymer Science 2022年第12期40卷 1604-1612,I0008页

作者： Lei Zhu Quan-zeng Zhang Hong Ding ming Zhang Xiao-Nan xue Wen-Kai Zhong Zi-Chun Zhou Jin-Qiu Xu Wei Feng Ye-Cheng Zou Yong-ming Zhang Feng Liu Frontiers Science Center for Transformative Molecules In-situ Center for Physical Scienceand Center of Hydrogen ScienceSchool of Chemistry and Chemical EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future Hydrogen Energy Materials Company Zibo 256401China

The manipulation of the morphology of the active layers is crucial for improving the performance of organic photovoltaic(OPV)devices. In particular, the development of non-fullerene acceptors(NFAs) has led to a large number of new materials with more complex interactions. Therefore, the investigation on the morphology control mechanism is the key aspect in providing guidance for material design and device optimization. In this study, the film morphology optimization using 1,8-diiodooctane(DIO) additive and a ternary fullerene acceptor strategy have been carried out based on the PCE10:ITIC blends. It is seen that suitable amount of DIO helps to increase the crystallization of the blended thin film. However, excessive DIO elevates the crystallization-induced phase separation and the domain size can exceed the exciton diffusion length, leading to efficiency drop. The addition of fullerene acceptor can improve the carrier transport of the blends, and its presence could retard the excessive phase separation induced by DIO additive. Under the joint optimization of the solvent additive and PCBM acceptor,the film morphology achieves a balance between crystallization and phase separation scales, the exciton diffusion and carrier transport are also optimized, and the short-circuit current(JSC) and fill factor(FF) of the device can be improved significantly.

关键词： Organic solar cells Morphology Solvent additive Crystallization-induced phase separation

Activated Drp1 regulates p62-mediated autophagic flux and aggravates inflammation in cerebral ischemia-reperfusion via the ROS-RIP1/RIP3-exosome axis

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Military Medical Research 2022年第6期9卷 668-685页

作者： xue zeng Yun-Dong Zhang Rui-Yan Ma Yuan-Jing Chen Xin-ming Xiang Dong-Yao Hou xue-Han Li He Huang Tao Li Chen-Yang Duan Department of Anaesthesiology the Second Affiliated Hospital of Chongqing Medical UniversityChongqing 400010China Department of Neurology the Third Affliated Hospital of Chongqing Medical UniversityChongqing 401120China Department of Cardiovascular Surgery Xinqiao HospitalArmy Medical UniversityChongqing 400037China State Key Laboratory of Trauma Burns and Combined InjuryDepartment of Shock and TransfusionDaping HospitalArmy Medical UniversityChongqing 400042China

Background: Cerebral ischemia-reperfusion injury(CIRI) refers to a secondary brain injury that can occur when the blood supply to the ischemic brain tissue is restored. However, the mechanism underlying such injury remains ***: The 150 male C57 mice underwent middle cerebral artery occlusion(MCAO) for 1 h and reperfusion for 24 h,Among them, 50 MCAO mice were further treated with Mitochondrial division inhibitor 1(Mdivi-1) and 50 MCAO mice were further treated with N-acetylcysteine(NAC). SH-SY5Y cells were cultured in a low-glucose culture medium for 4 h under hypoxic conditions and then transferred to normal conditions for 12 h. Then, cerebral blood flow, mitochondrial structure, mitochondrial DNA(mtDNA) copy number, intracellular and mitochondrial reactive oxygen species(ROS),autophagic flux, aggresome and exosome expression profiles, cardiac tissue structure, mitochondrial length and cristae density, mtDNA and ROS content, as well as the expression of Drp1-Ser616/Drp1, RIP1/RIP3, LC3 II/I, TNF-α,IL-1β, etc., were detected under normal or Drp1 interference ***: The mtDNA content, ROS levels, and Drp1-Ser616/Drp1 were elevated by 2.2, 1.7 and 2.7 times after CIRI(P0.05), it increased the packaging and extracellular secretion of exosomes containing p62 by 4–5 times, which could be decreased by Mdivi-1, Drp1 shRNA, and Nec-1(P<0.05). Furthermore, TNF-α and IL-1βincreased in CIRI-

关键词： Cerebral ischemia-reperfusion(CIRI) Oxygen-glucose deprivation/reoxygenation(OGD/R) Drp1 p62 LC3 II/I Reactive oxygen species(ROS) RIP1/RIP3 Autophagy Exosome Inflammatory

Exploring the oxidation behaviors of the Ti-V-Cr-Mo high-entropy MAX at 800°C for its self-lubricity

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Journal of Materials Science & Technology 2024年第20期187卷 49-62页

作者： Cheng-Feng Du Yaqing xue Hongwei Liang Chuanchao Wang Qingyan zeng Jinjin Wang Lili xue Hong Yu State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710072China

Given the unique nanolaminate structure,the MAX phase ceramics which are composed of alternatively stacked two-dimensional(2D)metal(M)carbides(X)and main group(A)atomic layers have shown promising properties at elevated ***,an excellent self-lubricating performance of a high-entropy(HE)(TiVCrMo)_(3)AlC_(2)MAX is demonstrated at 800℃ in the ***,the formation mechanism of a self-lubricative tribofilm is still waiting for *** this work,the HE(TiVCrMo)_(3)AlC_(2)MAX is synthesized and its oxidation behaviors are systematically evaluated at 800℃ in the air.A two-stage parabolic oxidation behavior is detected,which can be mainly ascribed to the volatilization of MoO_(3)species coupled with the thickening of the compound oxide ***,the HE com-position results in chemically complex phases including Rutile and vacancy-ordered TiO species in the oxide scale,which contribute to a higher ion diffusion rate for mass ***,the continued volatilization of MoO_(3)is beneficial for the enhanced lubricity and anti-wear performance of the(TiVCrMo)_(3)AlC_(2)MAX at 800℃.

关键词： MAX High-entropy High-temperature oxidation Kinetics Oxide scale

A deep kernel method for lithofacies identification using conventional well logs

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Petroleum Science 2023年第3期20卷 1411-1428页

作者： Shao-Qun Dong Zhao-Hui Zhong xue-Hui Cui Lian-Bo zeng Xu Yang Jian-jun Liu Yan-ming Sun jing-Ru Hao State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China Collge of Science China University of PetroleumBeijing102249China College of Geoscience China University of PetroleumBeijing102249China

How to fit a properly nonlinear classification model from conventional well logs to lithofacies is a key problem for machine learning *** methods(e.g.,KFD,SVM,MSVM)are effective attempts to solve this issue due to abilities of handling nonlinear features by kernel *** mining of log features indicating lithofacies still needs to be improved for kernel ***,this work employs deep neural networks to enhance the kernel principal component analysis(KPCA)method and proposes a deep kernel method(DKM)for lithofacies identification using well *** includes a feature extractor and a *** feature extractor consists of a series of KPCA models arranged according to residual network structure.A gradient-free optimization method is introduced to automatically optimize parameters and structure in DKM,which can avoid complex tuning of parameters in *** test the validation of the proposed DKM for lithofacies identification,an open-sourced dataset with seven con-ventional logs(GR,CAL,AC,DEN,CNL,LLD,and LLS)and lithofacies labels from the Daniudi Gas Field in China is *** are eight lithofacies,namely clastic rocks(pebbly,coarse,medium,and fine sand-stone,siltstone,mudstone),coal,and carbonate *** comparisons between DKM and three commonly used kernel methods(KFD,SVM,MSVM)show that(1)DKM(85.7%)outperforms SVM(77%),KFD(79.5%),and MSVM(82.8%)in accuracy of lithofacies identification;(2)DKM is about twice faster than the multi-kernel method(MSVM)with good *** blind well test in Well D13 indicates that compared with the other three methods DKM improves about 24%in accuracy,35%in precision,41%in recall,and 40%in F1 score,*** general,DKM is an effective method for complex lithofacies *** work also discussed the optimal structure and classifier for *** re-sults show that(m_(1),m_(2),O)is the optimal model structure and linear svM is the optimal classifier.(m_(1),m_(2),O)means there

关键词： Lithofacies identification Deepkernel method Well logs Residual unit Kernel principal component analysis Gradient-free optimization

Research of electromagnetic field in different length left-handed material slab

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核聚变与等离子体物理 2007年第3期27卷 256-259页

作者： LIN Zhen MA xue-ying LIANG Chang-hong zeng Hao National Key Laboratory of Antennas and Microwave Technology Xidian University Xi＇an 710071 Southwestern Institute of Physics Chengdu 610041

Finite-difference time-domain(FDTD) method is used to simulate the propagation of electromagnetic wave in left-handed material slab(LHMs) with cold plasma model The effects of optical propagation in the left-handed material compared to convex lens are *** wider the LHMs is,the stronger electric field of focusing image in left-handed material slab is confirmed by the simulation with various slab ***,the outer image point location would slightly moves to the LHMs side when the length of LHMs is reduced.

关键词：电磁场有限差异时间域低温等离子体模型聚焦图像左手材料平板

Synaptonemal complex protein 2 （SYCP2） mediates the association of the centromere with the synaptonemal complex

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Protein & Cell 2017年第7期8卷 538-543页

作者： Feng, Jianrong Fu, Shijuan Cao, Xuan Wu, Hao Lu, Jing zeng, ming Liu, Lin Yang, xue Shen, Yuequan Nankai Univ State Key Lab Med Chem Biol Tianjin 300071 Peoples R China Nankai Univ Coll Life Sci Tianjin 300071 Peoples R China Synerget Innovat Ctr Chem Sci & Engn Tianjin 300071 Peoples R China

Dear Editor,In neady all diploid eukaryotes, meiosis is the key phase in sexual reproduction. The typical process is completed by a round of DNA replication followed by two consecutive rounds of chromosome cell division （Ma et al., 2014; Page and Hawley, 2004）. Homologous chromosome pairing and seg- regation occur in the first round of meiosis and is unique to mitosis. The second round of meiosis bears a similarity to the separation of sister chromatids.

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