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Rare Metals 2024年第5期43卷 2241-2250页

作者： Pei-Sen Wang Zi-Tong Wang Ya-Ya Tan Peng Chen Xue-Cheng Zhang lu-nan Zhang Yong-Ge Wei lu-Bin Ni School of Chemistry and Chemical Engineering Yangzhou University State Key Laboratory of Natural and Biomimetic Drugs Peking University Key Lab of Organic Optoelectronics and Molecular Engineering of Ministry of Education Department of Chemistry Tsinghua University

An inorganicDorganic hybrid crystalline material (Si Mo12O40)[Cu（2,2'-bipy）2]2·2H2O （Complex 1,2,2'-bipy=2,2'-bipyridine） was synthesized for the first time by using 2,2'-bipy and transition metal copper to convert Waugh-type polyoxometalate[Mn Mo9O32]6-into a Keggin polyoxometalate structure[Si Mo12O40]4-under hydrothermal conditions in glass vials.Single crystal tests and a series of characterizations were carried out on Complex 1.The structure of Complex 1 is composed of[Si Mo12O40]4-and[CuII（2,2'-bipy）2]2+.The five-coordinated Cu is connected to two 2,2'-bipy through CuDN bonds,forming an approximately square structure.Astonishingly,Complex 1 exhibited good photocatalytic performance for methylene blue degradation and electrocatalytic nitrite reduction properties simultaneously.

关键词： Polyoxometalates Inorganic–organic hybrid materials Photocatalytic Electrocatalytic

Theoretical Investigation of the Mechanism of Rh(III)-catalyzed Annulation of 2-Biphenylboronic Acid with Activated Alkene

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Chemical Research in Chinese Universities 2023年第2期39卷 276-282页

作者： lu nan MIAO Chengxia LAN Xiaozheng College of Chemistry and Material Science Shandong Agricultural UniversityTaian271018P.R.China

The mechanism is investigated for Cp^(tBu)Rh(OH)_(2)-catalyzed annulation of 2-biphenylboronic acid with three activated alkenes using M06-2X functional.The reaction comprises transmetalation via two steps and following C-H activation producing reactive Rh-biphenyl complex with two Rh—Cσbonds.After the coordination/insertion of alkenes,respective fused or bridged cyclic products are yielded depending on different alkenes accompanied by the release of CptBuRh.The promotion of Cp^(tBu)Rh(OH)_(2) lies in the barrier decrease of transmetalation and C-H activation ready for coordination/insertion ensuring the smooth progress of common rate-limiting reductive elimination.The stereoselective transfer and ring rotation are specific for benzoquinone and cyclopropenone.The role of Rh(III)catalyst and release of Rh(I)is supported by Multiwfn analysis on frontier molecular orbital(FMO)of specific transiton states(TSs)and Mayer bond order(MBO)value of vital bonding,breaking.

关键词： Annulation Activated alkene Transmetalation Coordination/insertion M06-2X functional

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抖音短视频中的网络营销策略

山西财经大学学报 2024年第S1期46卷 142-144页

作者：鲁楠郑州商学院党委宣传部河南郑州451200

在当今互联网时代,网络对人们的学习、生活和工作都带来了强烈冲击。尤其是在市场营销方面,传统营销手段已经无法满足企业的需求,网络营销逐渐成为企业获取竞争优势的重要手段。作为网络营销的新兴领域,社交媒体营销在社会化媒体时代具... 详细信息

在当今互联网时代,网络对人们的学习、生活和工作都带来了强烈冲击。尤其是在市场营销方面,传统营销手段已经无法满足企业的需求,网络营销逐渐成为企业获取竞争优势的重要手段。作为网络营销的新兴领域,社交媒体营销在社会化媒体时代具有重要地位,其中最具代表性的平台之一就是抖音短视频。首先阐述抖音短视频及其网络营销的定义与特点,指出抖音短视频在网络营销中的优势,然后就抖音短视频中的网络营销策略和实际应用等方面进行探讨,旨在帮助企业更好地应用抖音短视频进行网络营销。

关键词：抖音短视频网络营销市场营销竞争优势

First-in-human Results of the Novel Transcatheter Mitral Valve Repair System for Severe Mitral Regurgitation

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Cardiology Discovery 2024年第2期4卷 148-159页

作者： Zhi-nan lu Yutong Ke Yingnan Bian Jing He Wenhui Wu Xinmin Liu Yang Li Ran Liu Taiyang luo Xunan Guo Guangyuan Song Interventional Center of vavular Heart Disease Beijing Anzhen HospitalCapital Medical UniversityBeijing 100029China Echocardiography Department Bejing Anzhen HospitalCapital Medical UniversityBeijing 100029China Research and Development Department Enlight MedicalShanghai 201209China

Objective:To evaluate the feasibility,safety,and effectiveness of a novel edge-to-edge mitral valve repair system(the NovoClasp system)in patients with severe mitral regurgitation.Methods:In this prospective,single-arm,first-in-human study conducted at Beijing Anzhen Hospital,data were collected from patients undergoing transcatheter edge-to-edge repair using the NovoClasp system.The study candidates were patients exhibiting a mitral regurgitation severity of 3+or more and were at high-risk or contraindicated for surgical intervention.Technical success and device success according to the Mitral Valve Academic Research Consortium definitions were used as primary outcomes.Other safety and efficacy outcomes were prospectively assessed at device implantation,discharge,and 30 d,6 months,and 12 months post-procedure.Results:Between October 1,2021,and January 31,2022,11 patients were treated for moderate-to-severe(grade 3+)or severe(grade 4+)mitral regurgitation using the NovoClasp system.All patients had a baseline New York Heart Association functional class oflll-lIV,with 7/11 exhibiting complex mitral valve disease.All patients achieved the primary endpoints of technical and device success,with a post-operative 30-d mitral regurgitation grade reduction to 2+or lower,which was maintained at 12 months.One patient had minor bleeding and hematoma at the access site before discharge,and 2 patients were readmitted due to fast atrial fibrillation within 12 months post-discharge.No additional cases of death,adverse cerebral or cardiovascular events,or device-related complications was observed during the follow-up.Conclusion:This study suggested the potential feasibility and safety of the NovoClasp system,showing a promising technical and device success rate,along with a decrease in mitral regurgitation severity.A further pivotal study is needed to assess the procedural and long-term outcomes.

关键词： Mitral valve insufficiency Transcatheter edge-to-edge repair Feasibility Safety

Graph Theory Based N-1 Transmission Contingency Selection and Its Application in Security-constrained Unit Commitment

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Journal of Modern Power Systems and Clean Energy 2021年第6期9卷 1458-1467页

作者： lu nan Yikui Liu Lei Wu Tianqi Liu Chuan He College of Electrical Engineering Sichuan University the Department of Electrical and Computer Engineering Stevens Institute of Technology Department of Electrical and Computer Engineering Stevens Institute of Technology

Contingency analysis is an important building block in the stability and reliability analysis of power grid operations. However, due to the large number of transmission lines,in practice only a limited number of contingencies could be evaluated. This paper proposes a graph theory based N-1 contingency selection method to effectively identify the most critical contingencies, which can be used in security-constrained unit commitment(SCUC) problems to derive secure and economic operation decisions of the power grid. Specifically, the power flow transferring path identification algorithm and the vulnerability index are put forward to rank individual contingencies according to potential transmission line overloads. Effectiveness of the proposed N-1 contingency selection method is quantified by applying the corresponding SCUC solution to the full N-1 security evaluation, i. e., quantifying total post-contingency generation-load imbalance in all N-1 contingencies. Numerical results on several benchmark IEEE systems, including5-bus, 24-bus, and 118-bus systems, show effectiveness of the proposed method. Compared with existing contingency selection methods which usually resort to full power flow calculations,the proposed method relies on power gird topology to effectively identify critical contingencies for facilitating the optimal scheduling of SCUC problems.

关键词： Concentric relaxation contingency analysis graph theory security-constrained unit commitment(SCUC) shortest path vulnerability index

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油气开发项目经济评价中间产物的价值研究

天然气技术与经济 2024年第2期18卷 45-50页

作者：鲁楠中油(新疆)石油工程有限公司设计分公司新疆克拉玛依834000

为了解决油气开发项目地面工程无法独立开展经济评价的问题,采用内部转移定价相关理论并结合经济评价方法确定了油气开发项目“中间产物”的定价方法。研究结果表明:(1)利用油气开发项目上游中间产物作为下游成本进行经济评价的方法是... 详细信息

为了解决油气开发项目地面工程无法独立开展经济评价的问题,采用内部转移定价相关理论并结合经济评价方法确定了油气开发项目“中间产物”的定价方法。研究结果表明:(1)利用油气开发项目上游中间产物作为下游成本进行经济评价的方法是可行的,对于系统工程中各阶段独立评价具有一定的指导意义;(2)油气开发项目使用中间产品进行经济评价应选取合适的中间产品,可选择“井口采出液价”或“井口油价”等,并充分考虑各成本费用和一定的风险系数进行不断地修正,保证项目经济评价结论客观可靠,以便为投资者决策提供依据;(3)计算中间产物价格并进行系统各阶段独立评价不仅适用于油田项目,在所有生产性工业项目中均适用,利用资金的时间价值理论,针对多系统项目分别对各系统中间产品进行量化,应用于各系统独立经济评价,满足经济评价效益与费用相一致的原则。

关键词：油气开发项目地面工程经济评价中间产物井口气价内部转移定价

Promoting China-Singapore Cooperation Through Talent Exchange

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China Report ASEAN 2023年第6期8卷 48-50页

作者： Huang Jiangqin lu nan Feng Chen 不详

Exclusive interview with Tony Du Zhi Qiang,president of Singapore Tian Fu Association.In recent years,southwest China’s Sichuan Province has accelerated its transition from an inland hinterland to a frontier of openingup.Major national strategies such as the Chengdu-Chongqing Twin City Economic Circle and the New International Land-Sea Trade Corridor converge and overlap in Sichuan,providing new opportunities for overseas Chinese to invest in new businesses there.Today,Singapore is the second largest source of foreign direct investment(FDI)in Sichuan.Statistics showed that by the end of 2022,Singapore had set up 737 foreigninvested enterprises(institutions)in Sichuan,with a total FDI of US$4.18 billion.

关键词： Chongqing invested Singapore

BRI Opportunities for Overseas Chinese Businesses--An interview with Dr.Derek Goh Bak Heng,President of Teochew Poit Ip Huay Kuan

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China Report ASEAN 2023年第4期8卷 53-55页

作者： Huang Jiangqin lu nan Feng Chen 不详

This year marks the 10th anniversary of the Belt and Road Initiative(BRI).Countries along the route have been responding enthusiastically to the BRI since it was proposed by China,and many overseas Chinese people have acted as bridges for cooperation.The Teochew people or Chaoshan people,native to the historical Chaoshan region in south China’s Guangdong Province,represent around 20 percent of the entire Chinese population in Singapore.Established in Singapore in 1929,Teochew Poit Ip Huay Kuan(TPIHK,meaning Chaoshan eight districts association)has a membership of more than 6,000 Singaporeans who have traced their origins to the eight Chaoshan districts including Chao’an,Jieyang,Chenghai。

关键词： district interview membership

Land Use Change and Anthropogenic Driving Forces:A Case Study in Yanhe River Basin

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Chinese Geographical Science 2011年第5期21卷 587-599页

作者： SU Changhong FU Bojie lu Yihe lu nan ZENG Yuan HE Anna Halina LAMPARSKI State Key Laboratory of Urban and Regional Ecology Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China ENV Australia Pry Ltd 113 Hamersley Road Subiaco Perth 6008 Australia

Human activities alter land use patterns and affect landscape sustainability. It is therefore very important to investigate the relationship between land use change and human activities. This study focuses on the detection of changing land use patterns in the Yanhe River Basin in northern Loess Plateau of China between 1995 and 2008. Landscape metrics were used to analyze the changing land use patterns and to explore the related anthropogenic driving forces. Results show that:1) Totally, 186 590 ha of croplands were converted into alternate land-use types (equivalent to 61.7% of the original cropland area). The majority of cropland areas were found to be converted into grassland and woodland areas (accounting for 55.9% and 4.9% respectively of the original cropland areas). 2) Both cropland and woodland demonstrated an increasing fragmentation tendency while grasslands showed a decreasing fragmentation tendency. 3) Multiple driving forces of land use change were thought to act together to changes in landscape metrics in the Yanhe River Basin. The anthropogenic driving forces were analyzed from four perspectives:ecological conservation policy, labor force transfer, industrial development, and rural settlement. The policy of the GfG (Grain for Green) project was the main driving factor which expedited the conversion from cropland to woodland and grassland. Industrial development was also found to affect land use change through the direct impact of economic activities such as oil exploration and agricultural production, or through indirect impacts such as the industrial structures readjustment. Labor force transfer from rural to urban areas was found to follow the industrial structure readjustment and further drove land use change from cropland to off-farm land use. Establishment of new tile-roofed houses instead of cave-type dwellings in rural settlements has helped to aggregate the original scattered land-use type of construction.

关键词：土地利用方式延河流域驱动力产业结构调整农村居民点案例土地利用格局土地利用模式

论泰戈尔与郭沫若泛神论思想的相似性及其美学意义

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嘉应学院学报 2024年第2期42卷 56-59页

作者：卢赛男广东文艺职业学院广州510515

泰戈尔的诗歌中充满着人与自然相融合的人文情怀,泛神论思想在泰戈尔的诗歌中影响深远。郭沫若是中国“五四”时期深受泛神论影响而出现的一位浪漫主义诗人,其诗歌代表了“五四”一代人的精神面貌,呼喊出了时代的最强音。笔者将试从泰... 详细信息

泰戈尔的诗歌中充满着人与自然相融合的人文情怀,泛神论思想在泰戈尔的诗歌中影响深远。郭沫若是中国“五四”时期深受泛神论影响而出现的一位浪漫主义诗人,其诗歌代表了“五四”一代人的精神面貌,呼喊出了时代的最强音。笔者将试从泰戈尔和郭沫若泛神论思想的形成历程,泛神论思想在他们诗歌中与自然的融合以及与人的融合三个方面来论述泰戈尔与郭沫若诗歌中泛神论思想的相似性及其美学意义。

关键词：泰戈尔郭沫若诗歌泛神论思想相似性