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Synthesis of Skipped Aminodienes by a Ni-Catalyzed Ring-Opening/Cross-Coupling Reaction of Vinylaziridines with Multifunctional Organoboronic Acids

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Chinese Journal of Chemistry 2023年第22期41卷 3003-3011页

作者： Lu Zhang Qingfeng Du Yicong Luo yuanlin wang Feng Gao Yong Ye Wanbin Zhang Green Catalysis Center College of ChemistryZhengzhou University100 Kexue RoadZhengzhouHenan 450001China Frontiers Science Center for Transformative Molecules School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan RoadShanghai 200240China

Skipped dienes are of great importance but remain challenging to synthesize because of the presence of a sp hybrid carbon between the two alkenes.Herein,we have developed the first nickel-catalyzed regio-,(E)-stereo-and linear-selective ring-opening/cross-coupling reaction of vinylaziridines with organoboronic acids under mild conditions to construct various skipped aminodienes.The reaction exhibits wide functional-group compatibility,and could be adapted for the introduction of skipped aminodiene functionality into bioactive molecules.

关键词： DFT calculation Multifunctional organoboronic acids Ni-catalyzed Ring-opening Skipped aminodiene

Enhancing Data Forwarding Efficiency in SIoT with Multidimensional Social Relations

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Computers, Materials & Continua 2024年第1期78卷 1095-1113页

作者： Fang Xu Songhao Jiang Yi Ma Manzoor Ahmed Zenggang Xiong yuanlin Lyu School of Computer and Information Science Hubei Engineering UniversityXiaogan432000China School of Computer Science and Information Engineering Hubei UniversityWuhan430062China Artificial Intelligence Industrial Technology Research Institute Hubei Engineering UniversityXiaogan432000China

Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research focus.This paper proposes a data forwarding algorithm based on Multidimensional Social Relations(MSRR)in SIoT to solve this problem.The proposed algorithm separates message forwarding into intra-and cross-community forwarding by analyzing interest traits and social connections among nodes.Three new metrics are defined:the intensity of node social relationships,node activity,and community connectivity.Within the community,messages are sent by determining which node is most similar to the sender by weighing the strength of social connections and node activity.When a node performs cross-community forwarding,the message is forwarded to the most reasonable relay community by measuring the node activity and the connection between communities.The proposed algorithm was compared to three existing routing algorithms in simulation experiments.Results indicate that the proposed algorithmsubstantially improves message delivery efficiency while lessening network overhead and enhancing connectivity and coordination in the SIoT context.

关键词： SIoT data forwarding social attributes social relations community

Revisiting the Mg isotopic systematics of siliciclastic components of sediments and sedimentary rocks:A new geochemical proxy of continental weathering in Earth's history

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Science China Earth Sciences 2024年第2期67卷 620-633页

作者： Tianzheng HUANG Bing SHEN Kangjun HUANG Meng NING Chao LI Jinzhuang XUE yuanlin SUN Baoqi HUANG Key Laboratory of Orogenic Belt and Crustal Evolution MOESchool of Earth and Space SciencesPeking UniversityBeijing100871China State Key Laboratory of Continental Dynamics Shaanxi Key Laboratory of Early Life and EnvironmentsDepartment of GeologyNorthwest UniversityXi’an710069China Institute of Sedimentary Geology Chengdu University of TechnologyChengdu610059China Key Laboratory of Rhenium-Osmium Isotopic Geochemistry Chinese Academy of Geological SciencesBeijing100037China

The Mg isotopic compositions of siliciclastic components(δ^(26)Mg_(sili))of sediments and sedimentary rocks have been commonly used to constrain the intensity of continental weathering,based on observations of,(1)an upward enrichment of26Mg in modern weathering profiles,(2)preferential uptake of26Mg in soil clays,and(3)general positive correlations between weathering intensities andδ^(26)Mg_(sili)values.However,not all weathering profiles display an upward increase ofδ^(26)Mg_(sili),and not all soil clays enrich in26Mg,complicating the interpretations ofδ^(26)Mg_(sili)data of sediments and sedimentary rocks.To further explore the controls ofδ^(26)Mg_(sili)of sediments and sedimentary rocks,here we measuredδ^(26)Mg_(sili),mineralogical compositions and major element compositions of deep sea sediments from South China Sea(SCS)and carbonate rock samples from two late Paleozoic sections in South China.Carbonate samples show decreasing trends of both normalized Mg concentration(Mgnorm)andδ^(26)Mg_(sili)values with the increase of weathering intensity,while SCS sediments samples do not show any correlation between Mgnormorδ^(26)Mg_(sili)values and weathering intensity.A three-stages weathering model is developed to explain the observed Mgnorm andδ^(26)Mg_(sili)data.In the new model,weathering can be divided into three stages,(1)the preliminary weathering stage characterized by dissolution of primary minerals and formation of secondary clay minerals in saprolite,(2)the transitional stage with massive vermiculite and chlorite formation on the bottom of soil,and(3)the advanced stage showing dissolution of vermiculite and chlorite in the top of soil.The new model explains anδ^(26)Mg_(sili)increase and Mgnormdecrease with an increase weathering intensity in preliminary weathering stage and decrease of Mgnormandδ^(26)Mg_(sili)with increase weathering intensity in advanced weathering stage.The revised weathering model warrants the application of Mg isotope in the study of continental weathering in deep time.

关键词： Clay mineral Chemical weathering CIA Soil Weathering model

LncRNA PCGEM1 facilitates cervical cancer progression via miR-642a-5p/KIF5B axis

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Oncology Research 2024年第7期32卷 1221-1229页

作者： yuanlin LIU YAN LIU YAN wang QIANG wang YAN YAN DANDAN ZHANG HUIQIN LIU Department of Obstetrics and Gynecology Shanghai First Maternity and Infant HospitalSchool of MedicineTongji UniversityShanghai200092China Department of Obstetrics and Gynecology The Second People’s Hospital of Nantong CityNantong226002China Department of Obstetrics and Gynecology Affiliated Hospital of Nantong UniversityNantong226002China

At present,the role of many long non-coding RNAs(lncRNAs)as tumor suppressors in the formation and development of cervical cancer(CC)has been studied.However,lncRNA prostate cancer gene expression marker 1(PCGEM1),whose high expression not only aggravates ovarian cancer but also can induce tumorigenesis and endometrial cancer progression,has not been studied in CC.The objective of this study was to investigate the expression and the underlying role of PCGEM1 in CC.The relative expression of PCGEM1 in CC cells was detected by real-time PCR.After the suppression of PCGEM1 expression by shRNA,the changes in the proliferation,migration,and invasion capacities were detected via CCK-8 assay,EdU assay,and colony formation assay wound healing assay.Transwell assay and the changes in expressions of epithelial-to-mesenchymal transition(EMT)markers were determined by western blot and immunoﬂuorescence.The interplay among PCGEM1,miR-642a-5p,and kinesin family member 5B(KIF5B)was conﬁrmed by bioinformatics analyses and luciferase reporter assay.Results showed that PCGEM1 expressions were up-regulated within CC cells.Cell viabilities,migration,and invasion were remarkably reduced after the suppression of PCGEM1 expression by shRNA in Hela and SiHa cells.N-cadherin was silenced,but E-cadherin expression was elevated by sh-PCGEM1.Moreover,by sponging miR-642a-5p in CC,PCGEM1 was veriﬁed as a competitive endogenous RNA(ceRNA)that modulates KIF5B levels.MiR-642a-5p down-regulation partially rescued sh-PCGEM1’s inhibitory effects on cell proliferation,migration,invasion,and EMT process.In conclusion,the PCGEM1/miR-642a-5p/KIF5B signaling axis might be a novel therapeutic target in CC.This study provides a research basis and new direction for targeted therapy of CC.

关键词： Cervical cancer PCGEM1 KIF5B MiR-642a-5p tumorigenesis

Distributional Chaoticity of the Minimal Subshift of Shift Operators

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Journal of Applied Mathematics and Physics 2024年第5期12卷 1647-1660页

作者： yuanlin Chen Tianxiu Lu Jiazheng Zhao College of Mathematics and Statistics Sichuan University of Science and Engineering Zigong China Key Laboratory of Bridge Non-destruction Detecting and the Engineering Computing Zigong China

This paper focus on the chaotic properties of minimal subshift of shift operators. It is proved that the minimal subshift of shift operators is uniformly distributional chaotic, distributional chaotic in a sequence, d... 详细信息

关键词： Shift Operators Subshift Distributional Chaoticity

Experimental and numerical study on microcrack detection using contact nonlinear acoustics

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Frontiers of Structural and Civil Engineering 2009年第2期3卷 137-141页

作者： Xiaojia CHEN yuanlin wang School of Transportation Wuhan University of TechnologyWuhan 430063China

This paper introduces a non-classical nonlinear acoustic theory for microcrack detection in materials,comparing contact nonlinearity with material nonlinearity.The paper's main work concentrates on the experimental and numerical verification of the effectivity of contact nonlinear acoustic detection by using the contact nonlinear parameter fl',which can be represented by the ratio of the second-harmonic amplitude to the square of the firstharmonic amplitude.Both experiments and numerical tests are performed.The results show that fl'is sensitive to the initiation of microcracks and varies with the development of the microcracks.The numerical test illustrates the decline offl'when microcracks penetrate each other.

关键词： microcrack detection contact nonlinearity numerical analysis

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“中兴”想象:同治金陵雅集活动的现实关切

江海学刊 2024年第3期 245-254,256页

作者：朱德印郭院林扬州大学文学院

同治年间,金陵开展了丰富的雅集活动,接续了战前的风雅传统,是重建地方文化和想象“盛世”的重要方式。雅集诗歌除了表现诗酒之乐外,更重要的是还关切现实,想象和期待“中兴”,表达对国家恢复承平盛世的普遍愿望和政治立场。这种思想情... 详细信息

同治年间,金陵开展了丰富的雅集活动,接续了战前的风雅传统,是重建地方文化和想象“盛世”的重要方式。雅集诗歌除了表现诗酒之乐外,更重要的是还关切现实,想象和期待“中兴”,表达对国家恢复承平盛世的普遍愿望和政治立场。这种思想情感层面的群体认同,对于战后江南地区“务期于正”的恢复有着重要的推动作用。雅集活动以诗酒弦歌彰显升平,抒写“雅颂”之声,涤荡兵戈沴气,推动社会风气趋于雅正祥和。但随着曾国藩逝世,当初雅集的文人星散各地,短暂的“中兴”想象也就宣告终结。

关键词：同治“中兴” 金陵 “名贤寿”雅集时代回应

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人工智能语境下的皮革制品设计路径研究

皮革科学与工程 2024年第2期34卷 91-98页

作者：曾钦宇孟凯宁王媛麟西华大学四川成都611730

以当下人工智能发展趋势为出发点,构建皮革制品设计路径,提升皮革制品的设计质量和效率。首先,通过对传统皮革制品设计要素进行整合,以提炼出人工智能语境下的皮革制品设计要素。其次,通过构建人工智能语境下的皮革制品设计制作流程,明... 详细信息

以当下人工智能发展趋势为出发点,构建皮革制品设计路径,提升皮革制品的设计质量和效率。首先,通过对传统皮革制品设计要素进行整合,以提炼出人工智能语境下的皮革制品设计要素。其次,通过构建人工智能语境下的皮革制品设计制作流程,明确人工智能在皮革制品设计中的应用方式、应用范围。最后,进一步提出人工智能语境下的皮革制品设计路径,为皮革制品设计行业提供有效的参考,同时也有助于皮革制品设计的发展。此外,该路径也可以帮助扩大皮革制品设计范围、增强创新能力、提升共创能力。

关键词：皮革制品人工智能设计路径产品设计

深耕优势题材领域,于变局中重寻内容优化之道——2023年度中国优秀电视剧创作述评

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电影评介 2024年第6期 101-107页

作者：孙蓓李元临南京传媒学院电竞学院南京传媒学院

自《中华人民共和国国民经济和社会发展第十四个五年(2021-2025年)规划和2035年远景目标纲要》①(或简称“十四五”纲要)提出以来,中国文化领域产生了许多新变化与新现象,电视剧创作环境与行业生态也经历了一系列的挑战和变化,包括追求... 详细信息

自《中华人民共和国国民经济和社会发展第十四个五年(2021-2025年)规划和2035年远景目标纲要》①(或简称“十四五”纲要)提出以来,中国文化领域产生了许多新变化与新现象,电视剧创作环境与行业生态也经历了一系列的挑战和变化,包括追求短期回报的跨界资本退潮。

关键词：内容优化题材领域电视剧创作行业生态国民经济和社会发展