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The Theory of Soil and Water Ecology is the Common Theoretical Basis in the Field of Ecological Environment
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作者 SUN Fazheng 《Journal of Landscape Research》 2022年第2期95-98,共4页
From the perspective of system concept and practical needs,the field of ecological environment needs new theories that can grasp the whole and command the overall situation.Soil and water ecology is the holistic view ... From the perspective of system concept and practical needs,the field of ecological environment needs new theories that can grasp the whole and command the overall situation.Soil and water ecology is the holistic view of nature of seeing both macrocosm and microcosm,is the largest common divisor of various types of ecosystems on the earth and will effectively integrate all ecological processes related to human beings,animals and plants.Starting from the principle of soil and water ecology,the paper resolved that:①the essence of landscape,forest,field,lake,grass,sand and ice is soil and water ecology and;②the fundamental reason of the ecological and environmental crises of climate change,global warming and loss of biodiversity lies in the change and destruction of the earth’s soil and water ecology.The theory of soil and water ecology is a major scientific issue related to the fundamental and overall situation of the ecological environment,is the golden key to understand and solve contemporary ecological and environmental issues and is the common theoretical basis in the field of ecological environment. 展开更多
关键词 Soil and water ecology theory of soil and water ecology Ecological environment theoretical basis
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Theoretical and Practical Basis for Progressive Multi-face Technology of Mine Development
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《Journal of Earth Science》 SCIE CAS CSCD 2000年第2期22-23,共2页
关键词 theoretical and Practical basis for Progressive Multi-face Technology of Mine Development
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Analysis of Theoretical Basis of Direct Subsidies for Grain Production
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作者 Shengping SHI Xiaorong LUO Hongjing LI 《Asian Agricultural Research》 2014年第1期24-26,共3页
Financial distribution to compensate grain production reflects governmental macro-control on grain production and supply. With the reference of agricultural basic theory,agricultural multi-function theory,economic ext... Financial distribution to compensate grain production reflects governmental macro-control on grain production and supply. With the reference of agricultural basic theory,agricultural multi-function theory,economic externality theory,public finance and other theories,this article points out that direct subsidies for grain production is reasonable and necessary with six main theoretical basis,namely fundamentality,multi-function,positive externality of grain production,particularity of grain supply and demand,grain safety being closely linked with national security and basic function of service-oriented government. 展开更多
关键词 DIRECT SUBSIDIES for GRAIN PRODUCTION theoretical
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Research Progress and Prospects of Total Factor Productivity in the Construction Industry 被引量:1
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作者 Chen WANG Shijie YU +2 位作者 Chenhao LIANG Lidan CAI Xiaohong XIONG 《Asian Agricultural Research》 2024年第7期39-41,共3页
The high-quality development of the construction industry fundamentally stems from the significant improvement of total factor productivity.Therefore,it is of crucial significance for promoting the development of the ... The high-quality development of the construction industry fundamentally stems from the significant improvement of total factor productivity.Therefore,it is of crucial significance for promoting the development of the construction industry to a higher level by scientifically and accurately measuring the total factor productivity of the construction industry and deeply analyzing the influencing factors behind it.Based on a comprehensive consideration of research methods and influencing factors,this paper systematically reviews the existing relevant literature on total factor productivity in the construction industry,aiming to reveal the current research development trend in this field and point out potential problems.This effort aims to provide a solid theoretical foundation and valuable reference for further in-depth research,and jointly promote the continuous progress and development of total factor productivity research in the construction industry. 展开更多
关键词 Construction industry Total factor productivity Research progress Influence factor theoretical basis
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On Lexicographical Translation in Bilingual Dictionaries and its Multi-disciplinary Theoretical Basis
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作者 Wei Xiangqing 《宏观语言学》 2007年第1期171-179,共9页
Traditionally, in the field of bilingual lexicography, the main task for lexicographers is to provide lexical equivalents in bilingual dictionaries by all possible means. And accordingly, how to provide appropriate or... Traditionally, in the field of bilingual lexicography, the main task for lexicographers is to provide lexical equivalents in bilingual dictionaries by all possible means. And accordingly, how to provide appropriate or satisfying translation equivalents in bilingual dictionaries is always the centre of attention in bilingual metalexicography. However, the history of bilingual lexicography shows that it has never been an easy task, because of linguistic and cultural anisomorphism. The usual compromise made by most lexicographers is to introduce partial or explanatory equivalents. This recourse means that most bilingual lexicographers, unfortunately, more than often, fail to meet the needs of foreign language learners. Certain misconceptions about the translation equivalents emerge among the language learners, which explains the awkward situation that besets bilingual exicographers. The present contribution aims at perceiving lexicographical translation as a dynamic process by which an adequate semantic system in the target language would be set up to serve as a functionally equivalent defining system. By doing this, bilingual lexicographers should establish a powerful target language semantic network, in which lexicographical sections like verbal illustrations, usage notes and etymologies, etc. would be considered together with the translation equivalents as an integrated whole. This is an attempt to describe the essential features of lexicographical translation and its multi-disciplinary theoretical basis, in the hope that future practice in bilingual lexicography might be improved. 展开更多
关键词 BILINGUAL dictionaries lexicographical TRANSLATION MULTI-DISCIPLINARY theoretical basis
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Correlation between the Change in the Number of Apis mellifera Worker Bees and Nectar Secretion of Nectariferous Plants
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作者 余玉生 张祖芸 +2 位作者 宋文菲 卢焕仙 王艳辉 《Agricultural Science & Technology》 CAS 2014年第1期116-118,136,共4页
[Objective] This study aimed to clarify the correlation between changes of Apis mel ifera and the nectar secretion characteristics of nectariferous plants. [Method] Considering the nectar secretion characteristics of ... [Objective] This study aimed to clarify the correlation between changes of Apis mel ifera and the nectar secretion characteristics of nectariferous plants. [Method] Considering the nectar secretion characteristics of major and auxiliary nec-tariferous plants, six Apis mel ifera colonies were selected for measure the number of eggs, larvae, pupae and adult bees from Jan. to Dec. in 2012; based on that, their annual change curves were also plotted. [Result] The results showed that there were three peaks of the total number of A. mel ifera workers throughout the year:the first occurred on May 15th, with bees developed into an ideal population for col-lecting pomegranate nectar, and the second and third peaks occurred on July 15th and Oct. 15th, respectively, with bees developed into an ideal population for col ect-ing E. ciliate (Thuab) Hyland. [Conclusion] Prevention of Varroa jacobsoni should be carried out with two or more types of acaricides at the late nectar flow stages of the two nectariferous plants(pomegranate and E. ciliate (Thuab) Hyland) when there was a nectar deficiency. Prevention of Tropilaelaps clareae should be timely per-formed with sublimed sulfur in conjunction with acaricides. This study provides a theoretical basis for the high-quality and high-yielding production of honey, as wel as for the product safety. 展开更多
关键词 Apis mellifera Number of worker bees Nectariferous plants CURVE theoretical basis
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Comparison of the Activity Differences in Two Terminal Oxidases between Upland Cotton and Sea-island Cotton 被引量:1
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作者 胡根海 王志伟 +3 位作者 张金宝 Gen-hai Zhi-wei Jin-bao 《Agricultural Science & Technology》 CAS 2010年第5期46-48,共3页
[Objective] This study was to reveal the differences in two terminal oxdiases,so as to provide theoretical basis for the selection of upland and sea-land hybrid materials. [Methods] Using 7 shares of upland cotton cul... [Objective] This study was to reveal the differences in two terminal oxdiases,so as to provide theoretical basis for the selection of upland and sea-land hybrid materials. [Methods] Using 7 shares of upland cotton cultivars and 4 shares of sea-land cultivars as experimental materials,the change differences in AAO and PPO activities during whole growth period of the materials tested were studied. [Results] Two terminal oxdiases both in upland and sea-land cotton cultivars assumed similar change laws during whole growth period. AAO activity assumed a low-high trend,and there is a peak at the early stage. PPO activity presented two peaks,and that at the early stage was higher than at the late stage; the first peak is obviously higher than the second for sea-land cultivars,and two peaks are not remarkably different for upland cultivars. [Conclusion] The differences in AAO and PPO activities of sea-land and upland cotton cultivars observed on Jul.4th and Aug.6th,may provide guidance for the selection of upland and sea-land hybrids. 展开更多
关键词 Sea-land cotton Upland cotton Growth stage Terminal oxdase
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The Development and Application of 2BDQ-8 Rice Direct Sowing Machine 被引量:2
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作者 杨新春 Xin-chun 《Agricultural Science & Technology》 CAS 2010年第5期187-190,共4页
[Objective] The aim was to introduce the development and application of 2BDQ-8 rice direct sowing machine and provide a theoretical basis for rice mechanization production. [Method] 2BDQ-8 rice direct sowing machine w... [Objective] The aim was to introduce the development and application of 2BDQ-8 rice direct sowing machine and provide a theoretical basis for rice mechanization production. [Method] 2BDQ-8 rice direct sowing machine was used for the promotion test in field of several cities and counties in Jiangsu Province,and artificial rice planting and mechanization rice planting were compared to explore the production and economic situation. [Result] 2BDQ-8 rice direct sowing machine had advantages such as high efficiency and low cost,the rice direct sowing machine saved about 30% compared to the artificial rice planting and mechanization rice planting,and the overall efficiency was significant. [Conclusion] 2BDQ-8 rice sowing machine was a production technology that had low cost and high efficiency,which should be widely applied. 展开更多
关键词 2BDQ-8 rice direct sowing machine Bud seed Direct seeding
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The Belt and Road Initiative from Three Theoretical Perspectives 被引量:1
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作者 Fu Mengz 《Contemporary International Relations》 2019年第2期1-33,共33页
Efforts have generally been made from policy considerations to interpret reasons for the proposition of the Belt and Road Initiative and its global layout.Though they are of some significance,such a grand initiative c... Efforts have generally been made from policy considerations to interpret reasons for the proposition of the Belt and Road Initiative and its global layout.Though they are of some significance,such a grand initiative certainly has its own internal theoretical basis.This paper is in the opinion that the spillover effect of oversized economy,the extension of the value chain and its climbing effect,as well as channel suitability and location orientation constitute the endogenous driving forces of the Belt and Road Initiative.Each of the three theoretical perspectives has its own internal realistic basis,all of which may offer some reference that is conducive to understanding the practice and future development of the Belt and Road Initiative. 展开更多
关键词 the BELT and ROAD INITIATIVE ENDOGENOUS driving force theoretical basis in terconnection and interworki ng
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A Brief Analysis of the Non-commercial Forest Compensation System in China
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作者 章颖 《Agricultural Science & Technology》 CAS 2013年第5期809-812,共4页
The non-commercial forest is an important natural resource protecting the environment and contributing to the sustainable development of a nation. Due to its crucial positive external effects, it is inevitable policy ... The non-commercial forest is an important natural resource protecting the environment and contributing to the sustainable development of a nation. Due to its crucial positive external effects, it is inevitable policy that non-commercial forestry should be invested by government, thereby formulates the non-commercial forestry compensation system. This paper first discusses the theoretical basis of non-commercial forestry compensation system and the process of establishment of non-commercial forestry compensation system in China, and then analyzes the deficiency in the current compensation system. 展开更多
关键词 Non-commercial forest Compensation system theoretical basis Deftciencies
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Four Bases of Xi Jinping's Thoughts on the Government of China
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作者 Han Qingxiang Wu Lingwei 《Contemporary Social Sciences》 2017年第5期1-9,共9页
Since the 18th CPC National Congress, the CPC Central Committee, led by General Secretary Xi Jinping, has unswervingly adhered to the continuing development of socialism with Chinese characteristics. Through courageou... Since the 18th CPC National Congress, the CPC Central Committee, led by General Secretary Xi Jinping, has unswervingly adhered to the continuing development of socialism with Chinese characteristics. Through courageous practice and excellent innovation, the CPC Central Committee has shaped a series of new ideas, thoughts and strategies of state governing, which serve as scientific guidelines for the actions and theories on further deepening the Reform and Opening-up and accelerating the modernization of socialism in China. Compared with "new ideas and new strategies," the "new thoughts" are more extensive, inclusive and thorough. In fact, "new thoughts" include "new ideas" and "new strategies" and are demonstrated by the latter two. Presenting the new CPC Central Committee's achievements in both practical and theoretical innovations with Xi Jinping's governing thought as the guide can further promote and deepen the essence of General Secretary Xi Jinping's series of key speeches. Xi Jinping's governing thought has its historical basis, realistic basis, theoretical basis and political basis. 展开更多
关键词 Xi Jinping’s governing thought historical basis realistic basis theoretical basis political basis
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The Public Law Construction of Government Agencies’Obligations to Disclose When Handling Personal Information in the Digital Age
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作者 喻文光 郑子璇 SHEN Jinjun(Translated) 《The Journal of Human Rights》 2022年第3期439-461,共23页
The protection of personal information plays an extremely important role in the construction of digital government.The duty to inform is a prerequisite core obligation that the government should fulfill in processing ... The protection of personal information plays an extremely important role in the construction of digital government.The duty to inform is a prerequisite core obligation that the government should fulfill in processing personal information,a concrete expression of the right to self-determination of personal information,and a prerequisite for the right to protection of personal information that works as a fundamental right to defense the intrusion from the government,as well as a procedural regulatory tool to restrain the government’s information power and prevent the risk of infringement.As the rules on the processing of personal information and the duty to inform have both the nature of public law,the government’s processing of personal information is also public law in nature,especially because of the constitutional value and power control function of the duty to inform,the construction of a system for the duty to inform cannot be copied from the rules applicable to private subjects,but should be tailored to the public law characteristics of the government’s processing of personal information,overcoming the shortcomings of the current rough and fragmented legislation,and set up a systematic regulation based on the public law in term of the legal subject,procedure,content,consequences of obligation violations and legal protection. 展开更多
关键词 protection of personal information government’s processing of personal information duty to inform theoretical basis system construction
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The Diversification of Higher Education Talent-cultivating model in China
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作者 Yang Xingfang (Huazhong University of Science and Technology, Wuhan Hubei 430074) 《交通高教研究》 2002年第2期17-20,共4页
This thesis is focused on the theme of reforming higher educational talent-cultivating models of our country and improving the quality of talents. In this thesis the logic, theoretical basis and realistic certainty of... This thesis is focused on the theme of reforming higher educational talent-cultivating models of our country and improving the quality of talents. In this thesis the logic, theoretical basis and realistic certainty of the diversification ofhigher education talent-cultivating model are revealed, and on the logic and theoretical basis, the practical strategy of the diversification of talentcultivating models is pointed out at the last. 展开更多
关键词 中国 高等教育 人才培养模式 人才质量 多元化 发展战略
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The Principle of Square Hole Machining and It's Tooling Structure Design
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作者 Jinxia NIU 《International Journal of Technology Management》 2015年第2期7-8,共2页
In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method: planetary wheel method, and analyze the principle of tooling structure and pro... In order to meet the rapid needs of processing square hole in mechanical equipment, the paper expounds the square hole processing method: planetary wheel method, and analyze the principle of tooling structure and process with computer graphics parameters design. The results that, as long as the appropriate parameters, using the above method not only can punch the square hole, can also be processed triangle, the five angle and hexagonal regular polygon holes. The square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel. 展开更多
关键词 Abstract: In order to meet the rapid needs of processing square hole in mechanical equipment the paper expounds the square hole processing method: planetary wheel method and analyze the principle of tooling structure and process with computer graphics parameters design. the results that as long as the appropriate parameters using the above method not only can punch the square hole can also be processed triangle the five angle and hexagonal regular polygon holes. the square hole processing method can provide theoretical basis and engineering reliable reference for related engineering and technical personnel. Keywords: Square hole processing Planet wheel Lelo triangle Square hole drilling
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A Probe on the Three Main Theoretical Basis of Self-Access Language Learning
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作者 喻贤莉 冯源 《当代文化与教育研究》 2007年第6期34-36,共3页
关键词 语言习得 人本心理学 建构主义 认知心理学 教育心理学
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Coupling Effect of Water and Phosphate on Economic Traits of Sugarcane 被引量:3
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作者 陆国盈 蒋明明 +4 位作者 韩世健 裴铁雄 汤雪莲 秦洪波 Guo-ying Ming-ming Shi-jian Tie-xiong Xue-lian Hong-bo 《Agricultural Science & Technology》 CAS 2010年第5期62-65,120,共5页
[Objective] The aim was to study the coupling effect of water and phosphate on economic traits of sugarcane. [Method] Taking sugarcane variety ROC22 as tested material,coupling effects of different levels of water sup... [Objective] The aim was to study the coupling effect of water and phosphate on economic traits of sugarcane. [Method] Taking sugarcane variety ROC22 as tested material,coupling effects of different levels of water supply quantity and different levels of phosphorus fertilizer on the yield and quality of sugarcane were studied. Among them,water supply quantity had 3 levels,that was,the water supply quantity per 10 days from the early tillering stage of sugarcane to the end of elongation was 199.5 m3/hm2 (A1),400.5 m3/hm2 (A2) and 600.0 m3/hm2 (A3),respectively; Phosphorus fertilizer as basic fertilizer had 4 levels:P2O5 0 kg/hm2 (B1),120 kg/hm2 (B2),240 kg/hm2 (B3) and 360 kg/hm2 (B4). [Result] Treatment A3B2 in water-fertilizer coupling was more suitable to improve economic traits of sugarcane. [Conclusion] The research results provide theoretical basis for the efficient utilization of water and phosphorus fertilizer in production of Guangxi sugarcane and the cultivation of high-yield and high-glucose sugarcane. 展开更多
关键词 Sugarcane Water Phosphorus fertilizer Water-phosphate coupling Economic traits
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6 Kinds of Isozymes after Long-term Subculture of Emmenopterys henryi Oliv. 被引量:5
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作者 杜景川 景丹龙 +1 位作者 陈发菊 李凤兰 《Agricultural Science & Technology》 CAS 2010年第5期22-27,共6页
[Objective] The aim was to study the changes of zymography in 6 kinds of isozymes after long-term subculture of Emmenopterys henryi Oliv.. [Method] Non-denaturing polyacrylamide gel electrophoresis was used to analyze... [Objective] The aim was to study the changes of zymography in 6 kinds of isozymes after long-term subculture of Emmenopterys henryi Oliv.. [Method] Non-denaturing polyacrylamide gel electrophoresis was used to analyze isozyme patterns such as esterase (EST),acid phosphatase (ACP),ATP enzyme (ATPase),amylase (AMY),superoxide dismutase (SOD) and peroxidase (POD) in long-term subculture callus of Emmenopterys henryi Oliv. [Result] The research showed that there were differences among the 6 kinds of isozymes in embryogenic callus and non-embryogenic callus of Emmenopterys henryi Oliv.,and both levels could be taken as the basis for identification,the EST,ACP,and POD of non-embryogenic callus were significantly higher than embryogenic callus. The browning of non-embryogenic callus was non-level in the AMY,SOD and POD isozymes when was compared with normal non-embryogenic callus,while the EST,ACP and ATPase isozymes decreased; When the browning of embryogenic callus was contrasted with normal embryogenic callus,EST isozyme increased and the other 5 kinds of enzymes decreased. [Conclusion] The study provided theoretical basis for research morphological difference and browning of long-term tissue culture of Emmenopterys henryi Oliv.. 展开更多
关键词 Emmenopterys henryi Oliv. Callus Long-term subculture Isozyme Browning
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Physiological and Biochemical Response of Artificial Wetland Plant under Electric Field 被引量:6
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作者 卢守波 宋新山 +2 位作者 张涛 王道源 严登华 《Agricultural Science & Technology》 CAS 2010年第5期121-124,共4页
By measuring wetland plants chlorophyll content,malondialdehyde(MDA) content and superoxide dismutase(SOD) enzyme activity,the changes of wetland plant physiological characeristics under different power strength were ... By measuring wetland plants chlorophyll content,malondialdehyde(MDA) content and superoxide dismutase(SOD) enzyme activity,the changes of wetland plant physiological characeristics under different power strength were studied,and the mechanism of electric field on plant physiological characteristics was analyzed to provide a theoretical basis for the pollutant removal ability strengthening of artificial wetland under electricfield.The results showed that compared with the control plants,low-intensity-voltage(1 V and 3 V) had no significant effect on the normal physiological and biochemical indexes of the plants,and the growth trend was better than the control group;with the voltage increasing,plant chlorophyll content,MDA content and SOD activity were greatly affected,indicating that plants were under strong oxidative stress,and the growth was damaged.Therefore,a suitable electric field could enhance the sewage treatment effect of constructed wetland. 展开更多
关键词 Electric field Artificial wetland plant Physiological and biochemical indexes Response
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Distribution Characteristics and Shielding Effects of Ion Clouds 被引量:1
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作者 Hui YANG Zhongqiu SHI +3 位作者 Renhong GUO Yixian QIU Qiaobin WEI Yu HUANG 《Meteorological and Environmental Research》 CAS 2023年第2期42-44,49,共4页
The latest research shows that the ions generated by the corona discharge of lightning rod have dual functions of attracting and shielding lightning discharge. After the lightning rod is installed at a certain height ... The latest research shows that the ions generated by the corona discharge of lightning rod have dual functions of attracting and shielding lightning discharge. After the lightning rod is installed at a certain height on the ground,the lightning rod tip reaches the corona threshold to ionize the surrounding air and generate positive and negative ions under the action of the electric field at the end of the lightning downward leader. Constrained by Coulomb’s Law,its positive ions( opposite charges attract each other) form an upward leader( streamer),which moves towards the end of the lightning downward leader and is connected to the downward leader,establishing a discharge channel to attract lightning to the needle tip and discharge the current to the ground,and playing a role in attracting lightning. Its negative ions are repelled by the electric field at the end of the lightning downward leader( repelled by isotropic charges) and influenced by the wind,and diffuse in the downwind area to form an ion cloud,inhibiting the growth of corona at the tip of ground objects,and playing a role in shielding lightning. In this paper,Franklin’s understanding of the role of lightning rod and Yang Shaojie’s new definition of the working principle of lightning rod are briefly introduced. The formation mechanism,distribution characteristics,shielding effect,and impact on lightning strike point distribution of ion clouds are analyzed. Additionally,the important role of shielding effects of ion clouds in regional lightning protection is introduced,which provides a theoretical basis for the correct understanding and use of lightning rod. 展开更多
关键词 Lightning rod Ion clouds Distribution characteristics Regional lightning protection theoretical basis
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ODD AND EVEN SYMMETRY OF ATMOSPHERIC CIRCULATION—THEORETICAL BASIS AND CLIMATIC CHARACTERISTICS
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作者 管兆勇 徐建军 王盘兴 《Acta meteorologica Sinica》 SCIE 1994年第2期187-194,共8页
Analysis is done of the distribution of odd and even symmetric components of circulations on a global basis in terms of observations and technique for the odd/even symmetry,indicating that climatic features of the com... Analysis is done of the distribution of odd and even symmetric components of circulations on a global basis in terms of observations and technique for the odd/even symmetry,indicating that climatic features of the component patterns and their temporal evolution are able to reveal their influence of land-sea discrepancy in the Northern and Southern Hemispheres,the time scale of atmospheric response to radiation heating,circulation waveform structure and seasonal adjustment of global circulation. 展开更多
关键词 atmospheric circulation SYMMETRY theoretical basis climatic characteristics
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