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Crystalline-State Solvent:Metal-Organic Frameworks as a Platform for Intercepting Aggregation-Caused Quenching

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Chinese Journal of Chemistry 2022年第5期40卷 589-596页

作者： yan-Yuan Jia Jia-Cheng Yin Na Li Ying-Hui Zhang Rui feng Zhao-Quan Yao Xian-He Bu School of Materials Science and Engineering Tianjin Key Laboratory of Metal and Molecule-Based Material ChemistryNankai UniversityTianjin300350 China State Key Laboratory of Elemento-Organic Chemistry College of ChemistryNankai UniversityTianjin300071 China

The sequestration of organic luminescent molecules(OLMs)within cage-based metal-organic frameworks(MOFs)as a dispersion platform has been developed to impede aggregation-caused quenching(ACQ).The homogenous encapsulation of distinct luminescent guests of different sizes and emissive behaviors in the cage structure of a MOF resulted in high fluorescent quantum yields of 44.8%for DAPI@NKU-110(DAPI=4',6-diamidino-2-phenylindole),65.4%for TPPA@NKU-110(TPPA=tris(4-(pyridin-4-yl)phenyl)amine),31.3%for R6G@NKU-110(R6G=Rhodamine 6G),and 58.3%for PY@NKU-110(PY=Pyronin Y),attributable to the confinement effect caused by the rigid cages of *** significantly,a positive correlation of the encapsulated quantity of OLMs with their concentration in the in-situ solvothermal reaction was unveiled by spectral analysis and utilized to facilely fabricate a white-light-emitting crystal material TPPA+R6G@*** material features a large crystal size on the millimeter-scale,broadband white emission,ideal CIE coordinates(0.33,0.34),and a high quantum yield(49.1%)when excited at 365 ***,such a strategy can be easily generalized to an abundance of other cage-based MOFs and a plentiful volume of OLMs for the future development of colorful,high performance luminescent materials.

关键词： Metal-organic frameworks Cage compounds Fluorescence Color tunability In-situ encapsulation

Effects of the severity and timing of basal leaf removal on the amino acids profiles of Sauvignon Blanc grapes and wines

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Journal of Integrative Agriculture 2019年第9期18卷 2052-2062页

作者： YUE Xiao-feng JU yan-lun TANG Zi-zhu ZHAO Ya-meng JIAO Xu-liang ZHANG Zhen-wen College of Enology Northwest A&F UniversityYangling 712100P.R.China Sino-French Joint Venture Dynasty Winery Ltd. Tianjin 300402P.R.China Shaanxi Engineering Research Center for Viti-Viniculture Yangling 712100P.R.China

The effects of the severity and timing of leaf removal(LR)on the amino acids of Sauvignon Blanc grapes and wines were studied during the 2017 growing ***-performance liquid chromatography(HPLC)was used to analyze the amino acids profiles of grape berries and *** basal leaves were removed at three time points(40,56 and 72 days after flowering,named LR40,LR56 and LR72,respectively)at two severity levels(one at which the first,third,and fifth basal leaves of each shoot were removed(50%level);and another at which the first six basal leaves were removed(100%level)).The results showed that leaf removal had little impact on total soluble solids(°Brix),titratable acidity,pH or berry *** LR72-50%treated grapes had higher berry weight,titratable acidity and°Brix than those of the other *** highest concentrations of total amino acids and of total amino acids except proline were detected in LR72-50%treated grapes(2 952.58 and 2 764.36 mg L^-1,respectively);the lowest were detected in LR72-100%treated grapes(2 172.82 and 2 038.71 mg L^-1,respectively).LR72-50%treatment significantly promoted the synthesis of aspartic acid,serine,arginine,alanine,aminobutyric acid and proline at both severity levels for grapes,the concentrations of all of these amino acids were increased relative to the control *** LR72-50%,LR40-100%and LR72-100%treated wines had higher total amino acids concentrations and higher concentrations of some individual amino acids,such as arginine,alanine and serine,than did the control *** all the amino acids studied,glycine,tyrosine,cysteine,methionine and lysine were not significantly influenced by the timing or severity basal defoliation in grapes and *** present study reveals the effects of the timing and severity of leaf removal on the amino acids profiles of grapes and wines.

关键词： amino acid grape leaf removal Sauvignon Blanc wine

Orbitally driven giant thermal conductance associated with abnormal strain dependence in hydrogenated graphene-like borophene

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npj Computational Materials 2019年第1期5卷 752-759页

作者： Jia He Dengfeng Li yan Ying Chunbao feng Junjie He Chengyong Zhong Hangbo Zhou Ping Zhou Gang Zhang School of Science Chongqing University of Posts and TelecommunicationsChongqing 400065China Institute of High Performance Computing A*STARSingapore 138632Singapore

Heat energy in solids is carried by phonons and ***,in most two-dimensional(2D)materials,the contribution from electrons to total thermal conduction is much lower than that for *** this work,through first-principles calculations combined with non-equilibrium Green’s function theory,we studied electron and phonon thermal conductance in recently synthesized 2D hydrogen *** hexagonal boron network with bridging hydrogen atoms is suggested to exhibit comparable lattice thermal conductance(4.07 nWK−1 nm−2)as graphene(4.1 nWK−1 nm−2),and similar electron thermal conductance(3.6 nWK−1 nm−2),which is almost ten times that of *** a result,total thermal conductance of 2D hydrogen boride is about two-fold of graphene,being the highest value in all known 2D ***,tensile strain along the armchair direction leads to an increase in carrier density,significantly increasing electron thermal *** increase in electron thermal conductance offsets the reduction in phonon thermal conductance,contributing to an abnormal increase in thermal *** demonstrate that the high electron density governs extraordinarily high thermal conductance in 2D hydrogen boride,distinctive among 2D materials.

关键词： strain thermal Orbital

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说话人感知的交叉注意力说话人提取网络

广东工业大学学报 2024年第3期41卷 91-101页

作者：李卓璋许柏炎蔡瑞初郝志峰广东工业大学计算机学院广东广州510006 汕头大学理学院广东汕头515063

目标说话人提取任务的目标是在一段混合音频中提取特定说话人的语音,任务设置上一般会给一段目标说话人注册音频作为辅助信息。现有的研究工作主要有以下不足:(1)说话人识别的辅助网络无法捕获学习注册音频中的关键信息;(2)缺乏混合音... 详细信息

目标说话人提取任务的目标是在一段混合音频中提取特定说话人的语音,任务设置上一般会给一段目标说话人注册音频作为辅助信息。现有的研究工作主要有以下不足:(1)说话人识别的辅助网络无法捕获学习注册音频中的关键信息;(2)缺乏混合音频嵌入和注册音频嵌入的交互学习机制。以上不足导致了现有研究工作在注册音频和目标音频之间存在较大差异时有说话人混淆问题。为了解决该问题,提出说话人感知的交叉注意力说话人提取网络(Speaker-aware Cross Attention Speaker Extraction Network,SACAN)。SACAN在说话人识别辅助网络引入基于注意力的说话人聚合模块,有效聚合目标说话人声音特性的关键信息和利用混合音频增强目标说话人嵌入。进一步地,SACAN通过交叉注意力构建交互学习机制促进说话人嵌入与混合音频嵌入融合学习,增强了模型的说话人感知能力。实验结果表明,SACAN相比基准方法在STOI和SI-SDRi分别提高了0.013 3、1.069 5 d B,并在说话人混淆相关评估和消融实验中验证了不同模块的有效性。

关键词：语音分离目标说话人提取说话人嵌入交叉注意力多任务学习

实时三维超声心动图联合血清NT-proBNP、MR-proADM、sST2对心力衰竭患者诊断及预后的评估价值

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现代生物医学进展 2024年第9期24卷 1741-1746页

作者：张丽燕陈洪茂付兴冯阿磊缪伟潍坊医学院医学影像学院山东潍坊261053 阳光融和医院超声科山东潍坊261000 阳光融和医院设备科山东潍坊261000 山东省立医院肿瘤科山东济南250021 潍坊市人民医院超声科山东潍坊261044

目的:探讨实时三维超声心动图(RT-3DE)联合血清N末端脑钠肽前体(NT-proBNP)、肾上腺髓质素前体中段肽(MR-proADM)、可溶性人基质裂解素2(sST2)对心力衰竭(HF)患者诊断及预后的评估价值。方法:选择2020年3月至2022年10月阳光融和医院收治... 详细信息

目的:探讨实时三维超声心动图(RT-3DE)联合血清N末端脑钠肽前体(NT-proBNP)、肾上腺髓质素前体中段肽(MR-proADM)、可溶性人基质裂解素2(sST2)对心力衰竭(HF)患者诊断及预后的评估价值。方法:选择2020年3月至2022年10月阳光融和医院收治的112例HF患者(HF组),另选择同期体检健康的50例志愿者(对照组)。所有受试者均接受RT-3DE检查,同时检测血清NT-proBNP、MR-proADM、sST2水平。对比两组RT-3DE参数和血清NT-proBNP、MR-proADM、sST2水平。HF患者出院后随访6个月,统计患者预后情况;根据预后将患者分为预后不良组(37例)和预后良好组(75例)。受试者工作特征(ROC)曲线分析RT-3DE参数联合血清NT-proBNP、MR-proADM、sST2诊断HF的临床价值及对预后不良的预测价值。结果:HF组左室收缩末期容积(LVESV)、左室舒张末期容积(LVEDV)、左室舒张末期容积指数(LVEDVI)、收缩末期容积指数(LVESVI)、血清NT-proBNP、MR-proADM、sST2水平高于对照组(P<0.05),左室射血分数(LVEF)低于对照组(P<0.05)。RT-3DE参数联合血清NT-proBNP、MR-proADM、sST2诊断HF的曲线下面积(AUC)为0.902,高于各指标单独诊断。预后不良组LVESV、LVEDV、LVEDVI、LVESVI、血清NT-proBNP、MR-proADM、sST2水平高于预后良好组(P<0.05),LVEF低于预后良好组(P<0.05)。RT-3DE参数联合NT-proBNP、MR-proADM、sST2预测HF预后不良的AUC为0.937,高于各指标单独预测。结论:HF患者LVESV、LVEDV、LVEDVI、LVESVI、血清NT-proBNP、MR-proADM、sST2水平增高,LVEF降低,联合RT-3DE参数和血清NT-proBNP、MR-proADM、sST2可提高对HF诊断和预后预测的效能。

关键词：实时三维超声心动图 NT-proBNP MR-proADM s ST2 心力衰竭诊断预后

Anti-depressant effects of Jieyu Anshen granule in chronic unpredictable mild stress-treated rats after ischemic stroke

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中国药理学与毒理学杂志 2018年第4期32卷 266-267页

作者： Yuan DU yan-qin SONG Lei-ming ZHANG feng-hua FU Key Laboratory of Molecular Pharmacology and Drug Evaluation School of Pharmacy YantaiUniversity Yantai 264005 China yantai Center for Food and Drug Control Yantai 264000 China

OBJECTIVE To explore the effects and underlying mechanism of Jieyu Anshen granule(JY) in chronic unpredictable mild stress(CUMS)-treated rats after ischemic *** A rat model of post-stroke depression(PSD) was developed by additional CUMS procedures after middle *** artery occlusion(MCAO).Sprague-Dawley rats were given 1 g·kg^(-1) and 3 g·kg^(-1) of JY by gastrogavage for 4 ***(10 mg·kg^(-1)) served as a reference *** tests including sucrose preference test,forced swim test and open-field test were performed to evaluate the antidepressant *** of norepinephrine(NE),dopamine(DA) and 5-hydroxytryptamine(5-HT) in rat brain were *** anti-inflammatory activity was evaluated by measuring TNF-α and IL-1β in *** adrenocorticotropic hormone(ACTH) and corticosterone(CORT) were estimated as indices of hypothalamic-pituitary-adrenal(HPA) axis *** blot analysis was used to evaluate *** expression of the 5-HT1 A receptor(5-HT_(1A)R) and brain-derived neurotrophic factor(BDNF).RESULTS PSD rats exhibited decreased sucrose consumption and motor activity,increased immobility time(P<0.01).JY treatment reversed the depressive behaviors in PSD rats(P<0.05,P<0.01).*** with JY resulted in significantly increased levels of NE,DA and 5-HT in the hippocampus and prefrontal cortex(P<0.05,P<0.01),and increased expression of 5-HT_(1A)R and BDNF in the hippocampus(P<0.01).JY treatment significantly down-regulated the levels of TNF-α and IL-1β in hippocampus and prefrontal cortex(P<0.05).Treatment with JY also resulted in significantly decreased ACTH and CORT in serum which had been increased(P<0.05).CONCLUSION These findings suggest that JY *** could ameliorate PSD,and the effects are likely ascribed to inhibiting HPA axis hyperfunction and inflammatory,up-regulating the levels of neurotransmitters(NE,DA and 5-HT),and the expression of hippocampal 5-HT_(1A)R and BDNF.

关键词：郁安神颗粒脑卒中治疗方法临床分析

Monitoring Zenithal Total Delays over the three different climatic zones from IGS GPS final products:A comparison between the use of the VMF1 and GMF mapping functions

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Geodesy and Geodynamics 2019年第2期10卷 93-99页

作者： Benachour Labib Jianguo yan Jean-Pierre Barriot Fangzhao Zhang Peng feng State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University Geodesy Observatory of Tahiti University of French Polynesia

The International GNSS Service(IGS) final products(ephemeris and clocks-correction) have made the GNSS an indispensable low-cost tool for scientific research, for example sub-daily atmospheric water vapor monitoring. In this study, we investigate if there is a systematic difference coming from the choice between the Vienna Mapping Function 1(VMF1) and the Global Mapping Function(GMF) for the modeling of Zenith Total Delay(ZTD) estimates, as well as the Integrated Precipitable Water Vapor(IPWV) estimates that are deduced from them. As ZTD estimates cannot be fully separated from coordinate estimates, we also investigated the coordinate repeatability between subsequent *** this purpose, we monitored twelve GNSS stations on a global scale, for each of the three climatic zones(polar, mid-latitudes and tropical), with four stations on each zone. We used an automated processing based on the Bernese GNSS Software Version 5.2 by applying the Precise Point Positioning(PPP)approach, L3 Ionosphere-free linear combination, 7 cutoff elevation angle and 2 h sampling. We noticed an excellent agreement with the ZTD estimates and coordinate repeatability for all the stations w.r.t to CODE(the Center for Orbit Determination in Europe) and USNO(US Naval Observatory) products, except for the Antarctic station(Davis) which shows systematic biases for the GMF related results. As a final step, we investigated the effect of using two mapping functions(VMF1 and GMF) to estimate the IPWV,w.r.t the IPWV estimates provided by the Integrated Global Radiosonde Archive(IGRA). The GPS-derived IPWV estimates are very close to the radiosonde-derived IPWV estimates, except for one station in the tropics(Tahiti).

关键词： International GNSS Service (IGS) Vienna Mapping Function 1 (VMF1) Global Mapping Function (GMF) Precise Point Positioning (PPP) Zenith Total Delay (ZTD) Zenith Wet Delay (ZWD) Integrated Precipitable Water Vapor (IPWV)

The CatMath: an online predictive platform for thermal + electrocatalysis

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Frontiers of Chemical Science and Engineering 2023年第12期17卷 2156-2160页

作者： Heng Liu Hao Zheng Zhenhe Jia Binghui Zhou yan Liu Xuelu Chen Yajun feng Li Wei Weijie yang Hao Li Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan Department of Power Engineering School of EnergyPower and Mechanical EngineeringNorth China Electric Power UniversityBaoding 071003China School of Chemical and Biomolecule Engineering The University of SydneySydney NSW 2006Australia

The catalytic volcano activity models are the quantified and visualized tools of the Sabatier principle for heterogeneous catalysis, which can depict the intrinsic activity optima and trends of a catalytic reaction as a function of the reaction descriptors, i.e., the bonding strengths of key reaction species. These models can be derived by microkinetic modeling and/or free energy changes in combination with the scaling relations among the reaction intermediates. Herein, we introduce the CatMath—an online platform for generating a variety of common and industrially important thermal + electrocatalysis. With the CatMath, users can request the volcano models for available reactions and analyze their materials of interests as potential catalysts. Besides, the CatMath provides the function of the online generation of Surface Pourbaix Diagram for surface state analysis under electrocatalytic conditions, which is an essential step before analyzing the activity of an electrocatalytic surface. All the model generation and analysis processes are realized by cloud computing via a user-friendly interface.

关键词： CatMath catalysis volcano activity plots Surface Pourbaix Diagrams online platform

武汉藏龙岛国家湿地公园生态服务功能价值评估

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湖北大学学报（自然科学版） 2024年第4期46卷 513-521页

作者：闫金伦刘浩李兆华封瑛陈红兵湖北大学资源环境学院湖北武汉430062 武汉市生态环境科技中心湖北武汉430022

武汉藏龙岛国家湿地公园是武汉市重要国家湿地公园。以藏龙岛国家湿地公园作为研究对象,运用市场价值法、替代工程法、成果参照法、影子工程法以及碳税法等方法,对藏龙岛国家湿地公园生态服务功能价值开展评估。研究结果表明,园区内生... 详细信息

武汉藏龙岛国家湿地公园是武汉市重要国家湿地公园。以藏龙岛国家湿地公园作为研究对象,运用市场价值法、替代工程法、成果参照法、影子工程法以及碳税法等方法,对藏龙岛国家湿地公园生态服务功能价值开展评估。研究结果表明,园区内生态服务总价值为1 436.91万元/a。单位面积生态系统服务价值为46 091.74元/(hm^(2)·a)。其中降解污染、水源涵养、生物多样性、栖息地保育、大气平衡、旅游休闲、气候调节、文教科研等方面的生态服务价值依次递减,其中降解污染与涵养水源的生态服务功能价值相对较高,降解污染的功能价值为886.67万元/a,占比61.71%;涵养水源的功能价值占比22.13%,为318.00万元/a。其二者为藏龙岛国家湿地公园主导服务。精确评估藏龙岛国家湿地公园的生态服务价值,并以此为基础实现量化,对于推动区域生态环境保护和可持续发展具有重要的现实意义。

关键词：藏龙岛国家湿地公园生态服务功能价值评估