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23篇 您的检索式:作者名="Liangang"
    题名 作者 年代 出处 被引量
1Analyzing Industrial Structure Evolution of Old Industrial Cities Using Evolutionary Resilience Theory:A Case Study in Shenyang of China显示文摘The recession and revitalization of old industrial cities concerns urban industrial evolution and its characteristics. Based on the theory of evolutionary resilience, we developed an analytical framework for the industrial structure evolution of old industrial cities, and applied the framework to a case study in Shenyang. The following conclusions are drawn. First, since 1978, Shenyang's industrial growth capacity has shown fluctuation between ‘contraction-expansion'. As the secondary industry has a much stronger expansionary and contractionary capacity for growth, this results in lacking stability leading to industrial structure transformation. Second, since 1999, the orientation towards a high-end manufacturing industry in Shenyang has weakened, and the evolution of the new and old growth path is characterized by low-end orientation. Third, since 2007, Shenyang's industrial innovation output capacity has dropped sharply which has been significantly affected by scientific and technological personnel and enterprise-owed science and technology institutions and to a less extent by R&D expenditure. We applied the resilience theory to study the industrial evolution of an old industrial city, explored new study perspectives on industrial evolution and verified the applicability of the resilience theory. This paper provides a scientific reference for understanding the recent deceleration in economic growth in the Northeast old industrial base, and for exploring new paths toward revitalization.GUAN Haoming LIU Wenxin ZHANG Pingyu LO Kevin LI Jing LI Liangang 2018Chinese Geographical Science2018,28,3:12
2Carbon nanotube glycol nanofluids: Photo-thermal properties, thermal conductivities and rheological behavior显示文摘The efficiency and effectiveness of solar energy capture and storage are to a large extent functions of the heat transfer and storage capacity of the medium used. This paper investigates the potential of using carbon nanotube (CNT)-glycol nanosuspension as such a medium, prepared by freeze drying-ultrasonic dispersing after oxidation treatment with HNO 3 . The influences of the mass fraction of CNTs glycol nanofluids and temperatures on photo-thermal properties, thermal conductivities and rheological behavior were investigated. The results show that CNTs with oxidation treatment exhibited good dis- persing performance. Strong optical absorption of the CNTs glycol nanofluids was detected in the range of 200-2500 nm. At room temperature, 18% enhancement was found in the photo-thermal conversion efficiency of the 0.5% mass fraction CNTs glycol nanofluids in comparison to the basic fluids, without significant increase in viscosity. At 55 C, CNTs glycol nanofluids with 4.0% mass fraction exhibited much lower viscosity and 25.4% higher thermal conductivity in comparison to that of pure glycol at room temperature.Zhaoguo Meng Daxiong Wu Liangang Wang Haitao Zhu Qingling Li 2012Particuology2012,10,5:5
3Observations and analysis of environment and acoustic field changed by the passage of typhoon Damrey in the Yellow Sea in 2012显示文摘In order to investigate the environment and acoustic filed change induced by typhoon in shallow sea, we conducted two experiments just before and after the passage of typhoon Damrey, which is the strongest to affect the area north of the Yangtze River since 1949, in the Yellow sea in 2012. The data show that the temperature of the whole water column increases dramatically except the sea surface layer after the passage of Damrey while the salinity decreases obviously. The thermocline deepens and weakens, which leads to a change of internal wave activity. The transmission losses(TL) of the two experiments show that the environment change induced by typhoon can increase the TL as large as 8 d B at a distance of 9.2 km and depth of 15 m. The scintillation index(SI) of the sound intensity is simulated to estimate the change of the effect of internal wave activity on acoustic field showing that the SI decreases to a half after the typhoon's passage. The normal mode structures of the two experiments are also significantly different due to the thermocline changes. In addition, the signal arrives earlier after the typhoon's passage due to the water temperature increase.YANG GuangBing Lü LianGang YUAN YeLi JIANG Ying LIU ZongWei YANG ChunMei LIU HongNing CHEN Zhao 2015Science China Earth Sciences2015,58,12:3
4The Dimension Vectors of Indecomposable Modules of Cluster-tilted Algebras and the Fomin-Zelevinsky Denominators Conjecture显示文摘The main result of this paper is that any two non-isomorphic indecomposable modules of a cluster-tilted algebra of finite representation type have different dimension vectors. As an application to cluster algebras of Types A, D, E, we give a proof of the Fomin-Zelevinsky denominators conjecture for cluster variables, namely, different cluster variables have different denominators with respect to any given cluster.Shengfei GENG Liangang PENG 2012Acta Mathematica Sinica,English Series2012,28,3:3
5Characteristics and distributions of humic acids in two soil profiles of the southwest China Karst area显示文摘Characteristics and distributions of humic acid(HA) and soil organic matter(SOM) in a yellow soil profile and a limestone soil profile of the southwest China Karst area were systematically investigated to reveal their evolutions in different soils of the study area. The results showed that characteristics and distribution of SOM along the two soil profiles were notably different. Total organic carbon(TOC) contents of soil samples decreased just slightly along the limestone soil profile but sharply along the yellow soil profile. TOCs of the limestone soils were significantly higher than those of the corresponding yellow soils, and C/N ratios of SOMs showed a similar variation trend to that of TOCs, indicating that SOM can be better conserved in the limestone soil than in the yellow soil. The soil humic acids were exhaustively extracted and further fractionated according to their apparent molecular weights using ultrafiltration techniques to explore underlying conservation mechanisms. The result showed that C/N ratios of HAs from different limestone soil layers were relatively stable and that large molecular HA fractions predominated the bulk HA of the top soil, indicating that HA in the limestone profile was protected while bio and chemical degradations were retarded. Combined with organic elements contents and mineral contents of two soils, weconcluded that high calcium contents in limestone soils may play a key role in SOM conservation by forming complexation compounds with HAs or/and enclosing SOMs with hypergene CaCO_3 precipitation.Liangang Ma Baohua Xiao Xinyue Di Weilin Huang Shijie Wang 2016Acta Geochimica2016,35,1:2
6Mathematical simulation on coupled flow, heat, and solute transport in slab continuous casting process显示文摘Hongliang Yang Xingzhong Zhang Kaiwen Deng Wencai Li Yong Gan Liangang Zhao 1998Metallurgical and Materials Transactions B1998,,6:1
7Screening for a^(177)Lu-labeled CA19–9 monoclonal antibody via PET imaging for colorectal cancer therapy显示文摘Carbohydrate antigen 19–9(CA19–9)with multi epitopes relatively high expresses on colorectal cancer(CRC)cells,making it an attractive target for developing radioimmunotherapy(RIT)for CRC.The lutetium-177(^(177)Lu)labeled monoclonal antibodies(mA bs)can selectively bind the corresponding antigens and release targeted cytotoxic radiation,which could induce cell apoptosis and reduce the drug-induced resistance.Here,a series of CA19–9 m Abs were labeled with zirconium-89(^(89)Zr),and one with high tumor uptake was screened via PET imaging,which has potential application for the diagnosis of CRC.Then the screened m Ab(C003)labeled with^(177)Lu was utilized for CA19–9 targeted RIT,which presents a significant suppression effect on the growth of colo205 xenografts than immunotherapy alone.Meanwhile,the side effects of ^(177)Lu-DOTA-C003 are limited according to the results of in vivo study.Both89Zr-DFO-C003for CRC immune-PET imaging and ^(177)Lu-DOTA-C003 for RIT against CRC exhibit good potential in clinical applications.Jing Wang Liangang Zhuo Peng Zhao Wei Liao Hongyuan Wei Yuchuan Yang Shuming Peng Xia Yang 2022Chinese Chemical Letters2022,33,7:1
8Mathematical Simulation on Coupled Flow, Heat and Solute Transport in Slab Continuous Casting Process 显示文摘Hongliang YANG Liangang ZHAO Xingzhong ZHANG 1998Metallurgical and Materials Transactions B1998,29,12:1
9Mathematical simulation on coupled flow, heat, and solute transport in slab continuous casting process显示文摘Hongliang Yang Xingzhong Zhang Kaiwen Deng Wencai Li Yong Gan Liangang Zhao 1998Metallurgical and Materials Transactions B1998,,6:1
10Triangulated categories and Kac-Moody algebras显示文摘Liangang Peng Jie Xiao 2000Inventiones mathematicae2000,,3:1
11Sweet spot evaluation and exploration practice of lacustrine shale oil of the second member of Kongdian Formation in Cangdong sag, Bohai Bay Basin显示文摘Based on core,thin section,X-ray diffraction,rock pyrolysis,CT scanning,nuclear magnetic resonance and oil testing data,the macro and micro components,sedimentary structure characteristics,of Paleogene Kong 2 Member in Cangdong sag of Huanghua depression and evaluation standard and method of shale oil reservoir were studied to sort out the best shale sections for shale oil horizontal wells.According to the dominant rock type,rhythmic structure and logging curve characteristics,four types of shale lithofacies were identified,namely,thin-layered dolomitic shale,lamellar mixed shale,lamellar felsic shale,and bedded dolomitic shale,and the Kong 21 sub-member was divided into four quasi-sequences,PS1 to PS4.The PS1 shale has a porosity higher than 6%,clay content of less than 20%,and S1 of less than 4 mg/g;the PS2 shale has well-developed laminar structure,larger pore and throat size,better connectivity of pores and throats,high contents of TOC and movable hydrocarbon,S1 of over 4 mg/g,clay content of less than 20%,and porosity of more than 4%;PS3 shale has S1 value higher than 6 mg/g and clay content of 20%-30%,and porosity of less than 4%;and PS4 shale has lower TOC content and low oil content.Shale oil reservoir classification criterion based on five parameters,free hydrocarbon content S1,shale rhythmic structure,clay content,TOC and porosity,was established.The evaluation method of shale oil sweet spot by using the weighted five parameters,and the evaluation index EI were proposed.Through comprehensive analysis,it is concluded that PS2 is best in quality and thus the dual geological and engineering sweet spot of shale oil,PS3 and PS1 come next,the former is more geologic sweet spot,the latter more engineering sweet spot,and PS4 is the poorest.Several vertical and horizontal wells drilled in the PS2 and PS3 sweet spots obtained high oil production.Among them,Well 1701 H has produced stably for 623 days,with cumulative production of over 10000 tons,showing bright exploration prospects of Kong 2 Member shale oil.HAN Wenzhong ZHAO Xianzheng JIN Fengming PU Xiugang CHEN Shiyue MU Liangang ZHANG Wei SHI Zhannan WANG Hu 2021Petroleum Exploration and Development2021,48,4:1
12Mathematical simulation on coupled flow,heat and solute transport in slab continuous casting process显示文摘Hongliang YANG Liangang ZHAO and Xingzhong ZHANG 1998Metallurgical and materials transactions B1998,29,12:1
13Triangulated categories and Kac-Moody algebras显示文摘Liangang Peng Jie Xiao 2000Inventiones mathematicae2000,,3:1
14The variations of zooplankton biomass and their migration associated with the Yellow Sea Warm Current显示文摘Lv Liangang Wang Xiao Wang Huiwu etal 2013Continental Shelf Research2013,64,:1
15Chemical constituents from Pueraria lobata 显示文摘Si Jianyong Chang Qi Shen Liangang 2006J Chin Pharm Sci2006,15,4:1
16Catalytic gas-phase fluorination of 1,1,2,3 -tetrachloropropene to 2-ehloro-3,3,3-trifluoropropene o- ver the fluorinated Cr2 03 -based catalysts显示文摘Mao Wei Kou Liangang Wang Bo 2015Applied Catalysis A :General2015,491,:1
17Triangulated categories and Kac-Moody algebras显示文摘Liangang Peng Jie Xiao 2000Inventiones mathematicae2000,,3:1
18A-π-D-π-A Type Small Molecules Using Ethynylene Linkages for Organic Solar Cells with High Open-circuit Voltages显示文摘在一个结合的分子介绍 ethynylene 连接能加深 HOMO 水平,减少位的限制并且更好去除 π 电子等等,它为器官的太阳能电池是有益的。而且,由 Sonogashira 反应介绍乙炔连接的典型方法能避免有毒的 stannyl 的用法中介和潜在地危险的 lithiation 反应。在这研究,二简单小分子 BEDPP 和 NEDPP 被设计并且综合,在哪个分别地,二个 diketopyrrolopyrrole 单位相称性地经由乙炔连接被连接到苯和萘核心。并且 BHJ (体积异质接面) 太阳能电池基于没有使用溶剂添加剂并且没有为活跃的层处理以后的任何东西的 BEDPP 和 NEDPP 提供我们有直到 0.90 和 0.98 V 的显著地高的开的电路电压的 1.48% 和 2.31% 的电源变换效率分别地。Ke Gao Liangang Xiao Yuanyuan Kan Lisheng Li Yajing Yan Huadong Huang Junbiao Peng Yong cao Xiaobin Peng 2016Chinese Journal of Chemistry2016,34,4:0
19Leader-follower Optimal Selection Method for Distributed Control System in Active Distribution Networks显示文摘Aiming at the shortcomings of a traditional centralized control in an active distribution network(AND),this paper proposes a leader-follower distributed group cooperative control strategy to realize multiple operation and control tasks for an ADN.The distributed information exchange protocols of the distributed generation(DG)group devoted to node voltage regulation or exchange power control are developed using a DG power utilization ratio as the consensus variable.On these bases,this study further investigates the leader optimal selection method for a DG group to improve the response speed of the distributed control system.Furthermore,a single or multiple leader selection model is established to minimize the constraints of the one-step convergence factor and the number of leaders to improve the response speed of the distributed control system.The simulation results of the IEEE 33 bus standard test system show the effectiveness of the proposed distributed control strategy.In addition,the response speed of a DG control group can be improved effectively when the single or multiple leaders are selected optimally.Jian Le Liangang Zhao Cao Wang Qian Zhou Yang Wang 2024CSEE Journal of Power and Energy Systems2024,10,1:0
20Views on “Principle of limitation of physical quantities and cyclic universe”显示文摘This paper presents an analysis of a paper entitled 'Principle of limitation of physical quantities and cyclic universe' and proposes different results for some formulae from that report.In addition,this paper shows that the principle of limits coupling may lead to an approximation of current theories(i.e.,quantum theory and relativistic theory),which have interesting correlations with the Plank formula and the special theory of relativity.LI LianGang Department of Physics,School of Sciences,Tianjin University,Tianjin 300072,China 2010Science China(Physics,Mechanics & Astronomy)2010,53,9:0
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