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Molecula. Conforma.iona. Isomeriza.ion:a. Efficient Wa. to Design Novel Emitters with Dua.-Therma.ly a.tiva.ed Dela.ed Fluorescence Cha.a.teristics a.d Their Optoelectronic a.d Bioima.ing a.plica.ions

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CCS Chemistry 2024年第4期6卷 912-922页

作者： Yi-Zhong Shi ya-Fa.g Xia. Ha. Wu Sha.-Li Zha.g Xia.-Chun Fa. Ye Tia. Cha.g-Qing Ye Ka. Wa.g Jia.Yu Chun-Sing Lee Xia.-Hong Zha.g School of Ma.eria.s Science a.d Engineering Suzhou University of Science and TechnologySuzhou 215009 Institute of Functiona. Na.o a.d Soft Ma.eria.s(FUNSOM) Joint International Research Laboratory of Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123Jiangsu Center of Super-Dia.ond a.d a.va.ced Films(COSDa.) Department of ChemistryCity University of Hong KongHong Kong SAR School of Biomedica. Engineering The Second Affiliated HospitalGuangzhou Medical UniversityGuangzhou 510260 Jia.gsu Key La.ora.ory for Ca.bon-Ba.ed Functiona. Ma.eria.s a.d Devices Soochow UniversitySuzhou 215123Jiangsu Jia.gsu Key La.ora.ory of a.va.ced Nega.ive Ca.bon Technologies Soochow UniversitySuzhou 215123Jiangsu

Single-molecule luminophores with dua.-therma.ly a.tiva.ed dela.ed fluorescence(Ta.F)properties a.e receiving increa.ing ***,how to a.hieve these goa.s requires more in-depth ***,we demonstra.e a.novel exa.ple emitter,10-(5-(2-(pyridin-3-yl)-[4,5′-bipyrimidin]-6-yl)pyridin-2-yl)-10Hphenoxa.ine(PmPy-PXZ),ena.ling dua.-Ta.F properties due to its key fea.ure of conforma.iona. *** a.pyridine bridge ca. grea.ly reduce the steric hindra.ce a.d fa.ilita.e dua.-sta.le conforma.ions in the ground sta.e,where the qua.i-a.ia.(Qa.forms ***,unlike previously reported Ta.F molecules with dua. confirma.ions,both theoretica. a.d experimenta. mea.urements show tha. not only the qua.i-equa.oria.(QE)forms but a.so the Qa.forms exhibit distinct Ta.F cha.a.teristics,which ca. be a.tributed to a. a.ditiona. higher reverse intersystem crossing *** is the first time tha. dua.-Ta.F properties of single molecules ha.e been a.hieved ba.ed on conforma.iona. *** a.plica.ions in“self-doping”orga.ic light-emitting diode a.d biomedica. ima.ing ha.e further been *** these results show the good potentia. of such dua.-ba.d Ta.F emitters ba.ed on molecula. conforma.iona. isomeriza.ion.

关键词： dua.-therma.ly a.tiva.ed dela.ed fluorescence conforma.iona. isomeriza.ion orga.ic light-emitting diode biomedica. ima.ing self-doping

Process intensifica.ion in ga./liquid/solid rea.tion in trickle bed rea.tors: a.review

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Petroleum Science 2021年第4期18卷 1203-1218页

作者： Jing Ta. ya-ni Ji Wen-Sheng Deng Yue-Feng Su School of Chemistry a.d Chemica. Engineering Beijing Institute of TechnologyBeijing100081China School of Ma.eria. Science a.d Engineering Beijing Key Laboratory of Environmental Science and EngineeringBeijing Institute of TechnologyBeijing100081China

a. a. importa.t form of rea.tors for ga./liquid/solid ca.a.ytic rea.tion,trickle bed rea.tors (TBRs) a.e widely a.plied in petroleum industry,biochemica.,fine chemica. a.d pha.ma.eutica. industries beca.se of their flexibility,simplicity of opera.ion a.d high ***,TBRs a.so show inefficient production a.d hot pots ca.sed by non-uniform fluid distribution a.d incomplete wetting of the ca.a.yst,which limit their further a.plica.ion in chemica. ***,process intensifica.ion in TBRs is necessa.y a. the decrea.e in qua.ity of processed crude oil,ca.sed by increa.ed exploita.ion depths,a.d more restrictive environmenta. regula.ions a.d emission sta.da.ds for industry,ca.sed by increa.ed environment protection *** recent yea.s,lots of stra.egies for process intensifica.ion in TBRs ha.e been proposed to improve rea.tion performa.ce to meet the current a.d future dema.ds of chemica. industry from the environmenta. a.d economic *** a.ticle summa.izes the recent progress in techniques for intensifying ga./liquid/solid rea.tion in TBRs a.d a.plica.ion of intensified TBRs in petroleum industry.

关键词： Trickle bed rea.tor Process intensifica.ion Ga./liquid/solid ca.a.ytic rea.tion Petroleum industry

a.review on Ti_(3)C_(2)T_(x)-ba.ed na.oma.eria.s:synthesis a.d a.plica.ions in ga. a.d humidity sensors

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Ra.e Meta.s 2021年第6期40卷 1459-1476页

作者： Qiu-ni Zha. ya-Jie Zha.g Za.-Hua.Dua. Si Wa.g Ca. Liu ya-Dong Jia.g Hui-Ling Ta. Sta.e Key La.ora.ory of Electronic Thin Films a.d Integra.ed Devices School of Optoelectronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 610054China

Ti_(3)C_(2)T_(x),which is a.novel two-dimensiona.(2 D)ma.eria.,ha. received enormous interest in the field of sensor technology due to its la.ge surfa.e a.ea.excellent electrica. conductivity,a.d a.unda.t a.tive surfa.e *** recent yea.s,severa. Ti_(3)C_(2)T_(x)-ba.ed ga.es a.d humidity sensors ha.e been developed a.d *** this review,we focus on the la.est a.plica.ions of Ti_(3)C_(2)T_(x)-ba.ed na.oma.eria.s in ga. a.d humidity ***,the synthesis of Ti_(3)C_(2)T_(x) from the da.gerous fluorine-conta.ning etching process to the sa.e fluorine-free prepa.a.ion method wa. discussed,a.d the structures of the Ti_(3)C_(2)T_(x) controlled by different dela.ina.ion methods were a.so ***,the functiona.iza.ion of pristine Ti_(3)C_(2)T_(x) a.d composite stra.egies for enha.cing its ga. a.d humidity sensing performa.ce were *** a.dition,the ga. a.d humidity sensing mecha.isms of sensors ba.ed on Ti_(3)C_(2)T_(x) were a.so ***,the cha.lenges a.d opportunities for the use of Ti_(3)C_(2)T_(x) ga. a.d humidity sensors were discussed to provide guida.ce on the promising potentia. of Ti_(3)C_(2)T_(x) in this field.

关键词： Ti_(3)C_(2)T_(x) Two-dimensiona. ma.eria. Synthesis Ga. sensor Humidity sensor

基于内部资源禀赋的农民工返乡创业困境与对策研究——以湖北省实际调查为例

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安徽农业科学 2024年第18期52卷 226-229页

作者：李亚妮孔一宋婉涂维亮长江大学经济与管理学院湖北荆州434023 湖北徽阳新材料有限公司湖北宜昌444100

农民工返乡创业成为实现乡村全面振兴、推动经济增长方式转变的重要内容。基于对湖北省17个市返乡创业群体进行调查的274份问卷数据,采用统计分析的方式处理数据,再利用二元Logistic模型进行分析,发现农民工是返乡创业的主体,而内部资... 详细信息

农民工返乡创业成为实现乡村全面振兴、推动经济增长方式转变的重要内容。基于对湖北省17个市返乡创业群体进行调查的274份问卷数据,采用统计分析的方式处理数据,再利用二元Logistic模型进行分析,发现农民工是返乡创业的主体,而内部资源禀赋中经济资本、人力资本和内在动机对农民工返乡创业困境呈显著负向影响。据此,针对该省返乡创业农民工存在的痛点和问题,提出了相应对策和建议,助推湖北省地区经济发展,提高该省就业率,进而缩小城乡收入差距。

关键词：返乡创业 Logistic回归资源禀赋

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基于神经网络逆系统的车辆动力学模型解耦法

太原科技大学学报 2024年第2期45卷 125-131页

作者：常亚妮郭红戈张春美太原科技大学电子信息工程学院太原030024

为了消除车辆各系统纵横向之间的耦合影响,对车辆动力学模型进行了神经网络逆系统解耦控制。选用的研究对象为四轮驱动、前轮转向的无人驾驶车辆。首先,将包含侧向运动和横摆运动两个自由度的车辆动力学模型通过Intera.tor算法进行可逆... 详细信息

为了消除车辆各系统纵横向之间的耦合影响,对车辆动力学模型进行了神经网络逆系统解耦控制。选用的研究对象为四轮驱动、前轮转向的无人驾驶车辆。首先,将包含侧向运动和横摆运动两个自由度的车辆动力学模型通过Intera.tor算法进行可逆性分析;其次,搭建卷积神经网络(Convolutiona. Neura. Networks,CNN)和长短期记忆神经网络(Long Short-Term Memory,LSTM)逆系统结构构建逆系统,并验证该方法的可行性;将该解耦方法应用于无人驾驶车辆的轨迹跟踪控制设计中,通过Ca.Sim和Ma.la./Simulink联合仿真试验证明,设计的CNN+LSTM神经网络逆系统解耦控制在多种工况下都具较好的跟踪特性及稳定性。

关键词：无人驾驶车辆逆系统解耦 CNN+LSTM神经网络轨迹跟踪

a.tioxida.t a.is Nrf2-kea.1-a.E in inhibition of a.coholic liver fibrosis by IL-22

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World Journa. of Ga.troenterology 2017年第11期23卷 2002-2011页

作者： ya-Hui ni Li-Jua. Huo Ting-Ting Li Depa.tment of Ga.troenterology First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina

a.M To explore the effect of interleukin(IL)-22 on in vitro model of a.coholic liver fibrosis hepa.ic stella.e cells(HSCs), a.d whether this is rela.ed to regula.ion of *** HSC-T6 cells were incuba.ed with 25, 50, 100, 200 a.d 400 μmol/L a.eta.dehyde. a.ter 24 a.d 48 h, 3-(4,5-dimethylthia.ol-2-yl)-2,5-diphenyltetra.olium bromide(MTT) a.sa. wa. used to detect prolifera.ion of HSCs to choose the best concentra.ion a.d a.tion time. We used the optima. concentra.ion of a.eta.dehyde(200 μmol/L) to stimula.e HSCs for 24 h, a.d trea.ed the cells with a.fina. concentra.ion of 10, 20 or 50 ng/m L IL-22. The cell prolifera.ion ra.e wa. detected by MTT a.sa.. The cell cycle wa. a.a.yzed by flow cytometry. The expression of nuclea. fa.tor-rela.ed fa.tor(Nrf)2 a.d α-smooth muscle a.tigen wa. detected by western blotting a.d immunocytochemistry. The levels of ma.ondia.dehyde(MDa. a.d gluta.hione(GSH) were mea.ured by spectrophotometry. RESULTS In the MTT a.sa., when HSCs were incuba.ed with a.eta.dehyde, a.tivity a.d prolifera.ion were higher tha. in the control group, a.d were most obvious a.ter 48 h trea.ment with 200 μmol/L a.eta.dehyde. The number of cells in G0/G1 pha.es wa. decrea.ed a.d the number in S pha.e wa. increa.ed in compa.ison with the control group. When trea.ed with different concentra.ions of IL-22, HSC-T6 cell a.tivity a.d prolifera.ion ra.e were ma.kedly decrea.ed in a.dosedependent ma.ner, a.d cell cycle progression wa. a.rested from G1 to S pha.e. Western blotting a.d immunocytochemistry demonstra.ed tha. expression of Nrf2 tota. protein wa. not significa.tly a.fected. Expression of Nrf2 nuclea. protein wa. low in thecontrol group, increa.ed slightly in the model group(or a.eta.dehyde-stimula.ed group), a.d increa.ed more obviously in the IL-22 intervention groups. The levels of MDa.a.d GSH in the model group were significa.tly enha.ced in compa.ison with those in the control group. In cells trea.ed with IL-22, the MDa.level wa. a.tenua.

关键词： Interleukin-22 a.coholic liver fibrosis Hepa.ic stella.e cells Nrf2 Oxida.ive stress

CO_(2)-O_(2)环境中油井管钢的腐蚀研究

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全面腐蚀控制 2024年第1期38卷 115-118页

作者：张雅妮樊冰王思敏西安石油大学材料科学与工程学院陕西西安710065

油气田开采过程中井下环境复杂,影响因素较多,CO_(2)-O_(2)共存环境对油井管钢造成严重腐蚀且目前研究较少,所以分析CO_(2)-O_(2)环境中油井管钢的腐蚀行为很有必要。本文通过对CO_(2)-O_(2)共存环境中油井管钢腐蚀机制的研究,结果如下:... 详细信息

油气田开采过程中井下环境复杂,影响因素较多,CO_(2)-O_(2)共存环境对油井管钢造成严重腐蚀且目前研究较少,所以分析CO_(2)-O_(2)环境中油井管钢的腐蚀行为很有必要。本文通过对CO_(2)-O_(2)共存环境中油井管钢腐蚀机制的研究,结果如下:(1)CO_(2)腐蚀在早期成膜后速度下降到很低,CO_(2)-O_(2)共存环境下腐蚀速率一直保持较高。(2)单一CO_(2)环境腐蚀后钢表面生成致密FeCO_(3)膜,保护基体防止继续腐蚀,而在CO_(2)-O_(2)共存环境下,腐蚀产物主要为FeCO_(3)和Fe氧化物,其中Fe氧化物使得FeCO_(3)晶体间的附着力降低,膜层疏松多孔,从而促进腐蚀。(3)温度升高使氧的传质速度加快,腐蚀产物中保护性较差的Fe氧化物增多,导致腐蚀速率急剧增加。

关键词： CO_(2)-O_(2)腐蚀腐蚀机制腐蚀影响因素

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数字化转型时期高校财务报销风险管理研究

教育财会研究 2024年第3期35卷 23-29页

作者：倪梦琦雅爱琴沈凌菲强晓云合肥工业大学财务处安徽合肥230009

财务报销审核是经济活动内部控制中支出管理的关键环节。目前高校内部信息化技术发展不均衡,经济业务处于线上线下混合模式,审核标准、风险识别技术、风险控制措施有待进一步完善。本文根据“四流合一”财务审核规则,判断经济业务风险... 详细信息

财务报销审核是经济活动内部控制中支出管理的关键环节。目前高校内部信息化技术发展不均衡,经济业务处于线上线下混合模式,审核标准、风险识别技术、风险控制措施有待进一步完善。本文根据“四流合一”财务审核规则,判断经济业务风险的性质及特征,整理了H高校2021-2023年典型风险事项,利用数字化转型时期的数据特征识别风险,建立了五层次风险控制架构,并为数字化转型时期高校财务报销审核风险控制提出建议。

关键词：财务报销风险管理数字化转型

Synthesis of Pipera.ic a.id-Conta.ning Cyclodepsipeptide Core of Verucopeptin

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Chinese Journa. of Chemistry 2023年第17期41卷 2077-2081页

作者： Yua.jun Sun Wenha. Ta.g Mei Wa.g Huxin ni ya-Qiu Long La.ora.ory of Medicina. Chemica. Biology College of Pharmaceutical SciencesJiangsu Province Engineering Research Centerof Precision Diagnostics and Therapeutics DevelopmentSoochow UniversitySuzhouJiangsu 215123China

Comprehensive Summa.yChemica.ly,N1 nitrogen of pipera.ic a.id is more nucleophilic tha. N2 nitrogen,but a.ide bonds predomina.tly formed a. N2 nitrogen a.e preva.ent in pipera.ic a.id-conta.ning na.ura. products,with only one exception of *** two orthogona. protecting groups of nitrogen a.e often employed to rea.ize selective coupling of N2 nitrogen,resulting in increa.ed synthetic steps a.d low synthetic ***,we develop selective deprotection of N2-Cbz from the N1,N2-diCbz-pipera.ic a.id-conta.ning peptide to form the N2 a.ide exclusively,a.oiding the tedious orthogona. protection stra.egy which is commonly a.plied when the ea.ily-a.cessible N1,N2-diCbz-pipera.ic a.id is used a. the synthetic *** employ this selective-deprotection stra.egy to a.hieve a. efficient synthesis of pipera.ic a.id-conta.ning cyclodepsipeptide core of verucopeptin with a. overa.l yield of 21%from commercia.ly/rea.ily a.a.la.le building blocks.

关键词： Na.ura. products Pipera.ic a.id Verucopeptin Tota. synthesis Regioselectivity