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韩国开化期进化论的接受与文学思想 被引量:2
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作者 尹弘老 廉松心 《北华大学学报(社会科学版)》 2010年第1期80-87,共8页
19世纪末20世纪初,韩国处于开化期,为了民族的生存和国权的恢复,接受了进化论思想。作为维护国权的开化期思想,经历了从实学到新的基督教文化以及以进化论为旗帜的科学思想发展过程。传统的儒家思想和外来的基督教文化以及进化论的自然... 19世纪末20世纪初,韩国处于开化期,为了民族的生存和国权的恢复,接受了进化论思想。作为维护国权的开化期思想,经历了从实学到新的基督教文化以及以进化论为旗帜的科学思想发展过程。传统的儒家思想和外来的基督教文化以及进化论的自然科学思想,经过相互磨合期,共同形成了新的时代精神的基础。 展开更多
关键词 开化期 进化论 文学思想
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Analysis of Season Change in Jiyang from Meteorological Standpoint
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作者 刘树峰 苏轶 《Agricultural Science & Technology》 CAS 2012年第5期1073-1075,共3页
[Objective] The aim was to analyze changing characters of four seasons in Jiyang, providing references for farming and disaster prevention in the area. [Methed] Changing characters of initial time and lasting periods ... [Objective] The aim was to analyze changing characters of four seasons in Jiyang, providing references for farming and disaster prevention in the area. [Methed] Changing characters of initial time and lasting periods of four seasons in Jiyang for 30 years were analyzed from meteorological standpoint with weather information from 1981 to 2010 observed in surface meteorological observation in Jiyang. [Result] Recent 30 years, initial time of spring and winter in Jiyang were earlier than before, especially for spring. In contrast, initial time of summer and autumn were later, especially for autumn. In addition, periods of spring and winter declined and the latter changed more significantly. Meanwhile, periods of summer and autumn extended and rate of linear trend for summer period was 0.042 hou/year. [Conclusion] The research indicated that lasting days of summer extended significantly and of spring and winter shortened under the background of global warming. 展开更多
关键词 Four seasons Initial time Lasting period Changing trend
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Development and Application of Hydrocracking Catalysts RHC-1/RHC-5 for Maximizing High Quality Chemical Raw Materials Yield 被引量:6
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作者 Mao Yichao Nie Hong +3 位作者 Li Mingfeng Hu Zhihai Zhao Guangle Zhao Yang 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2018年第2期41-47,共7页
To adapt to the change in the demand of the oil refining market,two hydrocracking catalysts,RHC-1 and RHC-5,were developed to improve the quality of tail oil.The catalysts were designed based on the theory of selectiv... To adapt to the change in the demand of the oil refining market,two hydrocracking catalysts,RHC-1 and RHC-5,were developed to improve the quality of tail oil.The catalysts were designed based on the theory of selective ring-opening.By selecting more acidic molecular sieves,the problem of poor selectivity of conventional materials can be solved to properly match up to the hydrogenation performance of catalysts.Compared with the performance of previous catalysts,the quality of the tail oil achieved by the said catalysts is better,and the BMCI is reduced by 1—2 units.In the long cycle operation of the petroleum industry,the good quality of the tail oil has been verified and the adaptability of the process conditions is good.When the RHC-1 catalyst is used to process heavy feed under medium pressure,a BMCI value of about12 can be obtained along with a nearly 60%yield of tail oil.The total yield of chemical raw material(steaming cracking feed+catalytic reforming feed)can exceed 80%,and the hydrogen consumption has dropped by nearly 50%as compared to the conventional hydrocracking conversion rate.When processing a mixed CGO and VGO feed with the full conversion mode under a hydrogen pressure of 13.0 MPa,the RHC-5 catalyst can yield about 68.4%of heavy naphtha with a potential aromatic content of up to 50.6,while the total yield of chemical raw materials can reach more than 98%.The results of industrial application of these catalysts show that more than 30%of high quality tail oil can be obtained via processing of inferior quality feed,and its BMCI value can reach 10.7.The total yield of chemical raw materials can reach more than65%.The industrial operation process has implemented two operating cycles totaling 8 years. 展开更多
关键词 HYDROCRACKING CATALYST chemical raw material tail oil
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大豆的田间管理技术 被引量:1
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作者 高颖 《现代畜牧科技》 2017年第4期65-65,共1页
我国北方地区种植大豆产量高、品质好,大豆营养价值丰富,不但可以食用,并且还具有良好的饲用价值,其加工剩余产品用来喂猪、牛等家畜均可达到良好的饲喂效果。因此要加强大豆的种植技术,以提高产量和质量,现就大豆的田间管理技术加以简... 我国北方地区种植大豆产量高、品质好,大豆营养价值丰富,不但可以食用,并且还具有良好的饲用价值,其加工剩余产品用来喂猪、牛等家畜均可达到良好的饲喂效果。因此要加强大豆的种植技术,以提高产量和质量,现就大豆的田间管理技术加以简单介绍。 展开更多
关键词 大豆 饲用价值 营养物质 产量 田间管理 开化结荚 鼓粒
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Regional Innovation Policies for High-Technology Firms: The Importance of the Cluster Life Cycle
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作者 Paolo Calvosa 《Chinese Business Review》 2013年第5期344-362,共19页
The present work makes an in-depth analysis of an aspect not yet sufficiently examined by the studies into regional innovation systems, relating to why the policy makers must adopt regional innovation policies in acco... The present work makes an in-depth analysis of an aspect not yet sufficiently examined by the studies into regional innovation systems, relating to why the policy makers must adopt regional innovation policies in accordance with the development cycle of the active clusters in the territory. The analysis carried out in the course of the work contributes towards understanding the validity of an evolutionary-type development model for which the regional innovation policies for the growth of high-tech firms should dynamically change in relation to the various cluster stages. The development model proposed provides a framework for the policy makers in order to state more efficiently through time the regional innovation strategies. 展开更多
关键词 regional innovation system cluster life cycle high-technology firms regional innovation policy evolutionary economic geography approach
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Energy Crisis in Nigerian University System: Implications of Self Auto-generation for Human Capital Development
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作者 Stephen Chijioke Nwanya 《Journal of Energy and Power Engineering》 2014年第12期2017-2026,共10页
Energy requirements for tertiary educational purpose is burgeoning, a reflection of its criticality to human asset formation and to use self auto-generation by petrol or diesel generators as the energy supply source i... Energy requirements for tertiary educational purpose is burgeoning, a reflection of its criticality to human asset formation and to use self auto-generation by petrol or diesel generators as the energy supply source is an unsustainable practice. The situation is worrisome in view of the noise pollution and nuisance that constitutes to the learning environment. This paper, therefore, determines the quantity of self generated energy supply, its intensity, the associated CO2 emissions and their possible implications for human capital development. A survey of generating sets was conducted using the University of Nigeria Nsukka as a representative of Nigerian universities. A walk-through-approach was adopted in gathering data and two metrics-life cycle cost and cost of electricity from auto-generation were used to determine the economic implications of the self generation. The results show that self auto-generation contributed installed energy capacity of amount 19 MVA, 20 MVA, 34 MVA, 11 MVA and 22 MVA to run human capital development activities, respectively for academic sessions from July 2006 to November 2010. The study helps us understand that reforms in educational sector are not effective as long as energy insecurity is a dominant factor. 展开更多
关键词 Self-generation energy impact human asset university.
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关于《独学韩语大成》命令句中出现的朝鲜语阶称及其日语对译样态的研究
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作者 金熙晶 《中国朝鲜语文》 2019年第6期53-61,共9页
朝鲜语阶称体现着人与人在交谈活动中表现的语言礼仪,揭示着说话者与听者的上下尊卑关系,是朝鲜语特有的语法范畴。因此在要求对方做出某种行为时,阶称的正确使用显得极为重要。在开化期刊行的朝鲜语学习书《独学韩语大成》呈现着现代... 朝鲜语阶称体现着人与人在交谈活动中表现的语言礼仪,揭示着说话者与听者的上下尊卑关系,是朝鲜语特有的语法范畴。因此在要求对方做出某种行为时,阶称的正确使用显得极为重要。在开化期刊行的朝鲜语学习书《独学韩语大成》呈现着现代朝鲜语形成时期的语言特征,文献中出现的朝鲜语阶称亦与今时有着不同的使用样态。本文以《独学韩语大成》中出现的命令句为统计对象,对文献中出现的朝鲜语阶称及其日语对译样态进行了考察研究。 展开更多
关键词 独学韩语大成 开化期 朝鲜语学习书 阶称 命令句:日语对译
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Exploitation of symmetry in periodic Self-Consistent-Field ab initio calculations: application to large three-dimensional compounds
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作者 DE LA PIERRE Marco ORLANDO Roberto +2 位作者 FERRABONE Matteo ZICOVICH-WILSON Claudio M. DOVESI Roberto 《Science China Chemistry》 SCIE EI CAS 2014年第10期1418-1426,共9页
Symmetry can dramatically reduce the computational cost (running time and memory allocation) of Self-Consistent-Field ab initio calculations for crystalline systems. Crucial for running time is use of symmetry in th... Symmetry can dramatically reduce the computational cost (running time and memory allocation) of Self-Consistent-Field ab initio calculations for crystalline systems. Crucial for running time is use of symmetry in the evaluation of one- and two-electron integrals, diagonalization of the Fock matrix at selected points in reciprocal space, reconstruction of the density matrix. As regards memory allocation, full square matrices (overlap, Fock and density) in the Atomic Orbital (AO) basis are avoided and a direct transformation from the packed AO to the SACO (Symmetry Adapted Crystalline Orbital) basis is per- formed, so that the largest matrix to be handled has the size of the largest sub-block in the latter basis. We here illustrate the effectiveness of this scheme, following recent advancements in the CRYSTAL code, concerning memory allocation and direct basis set transformation. Quantitative examples are given for large unit cell systems, such as zeolites (all-silica faujasite and silicalite MF1) and garnets (pyrope). It is shown that the full SCF of 3D systems containing up to 576 atoms and 11136 Atomic Orbitals in the cell can be run with a hybrid functional on a single core PC with 500 MB RAM in about 8 h. 展开更多
关键词 point symmetry Symmetry Adapted Crystalline Orbitals Fock matrix density matrix CPU time memory allocation quantum-mechanical calculations CRYSTAL code
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New Exact Solutions and Dynamics in(3+1)-Dimensional Gross–Pitaevskii Equation with Repulsive Harmonic Potential 被引量:1
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作者 王晓丽 武振华 《Communications in Theoretical Physics》 SCIE CAS CSCD 2014年第5期583-589,共7页
Using an improved homogeneous balance principle and an F-expansion technique, we construct the new exact periodic traveling wave solutions to the(3+1)-dimensional Gross–Pitaevskii equation with repulsive harmonic pot... Using an improved homogeneous balance principle and an F-expansion technique, we construct the new exact periodic traveling wave solutions to the(3+1)-dimensional Gross–Pitaevskii equation with repulsive harmonic potential. In the limit cases, the solitary wave solutions are obtained as well. We also investigate the dynamical evolution of the solitons with a time-dependent complicated potential. 展开更多
关键词 Gross-Pitaevskii equation exact solution solitory wave periodic wave F-expansion
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