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Study on the Application Test of Planting with Variable Rate Fertilization in the Field Based on DGPS Location

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Study on the Application Test of Planting with Variable Rate...

国际农业工程大会

作者： Xinzhong Wang associate Professorengineering College Heilongjiang August First Land Reclamation University Daqing 163319 China

＜正＞ With resort to the technology of the precision agriculture research center in Heilongjiang August First Land Reclamation University, Heilongjiang Land Reclamation General Bureau established in the year of 2002 the Precision Agriculture Sample Test base in the 2nd Brigade on the 5th Branch of Youyi Farm in Heilongjiang Province. From America Case Company a whole set of precision agriculture mechanical machinery has been introduced and the foundation of the correctly differential station of DGPS with regional independence makes it possible to carry out the Precision Agriculture Testing Sample. As a result, the first experimental effect has been obtained.

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Biomass Pyrolysis Liquefaction technology

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Biomass Pyrolysis Liquefaction Technology

国际农业工程大会

作者： Weiming Yi PhD. Professor East campus Shandong University of technology Zibo Shandong Province P. R. China. 255012 Xueyuan Bai Ms. Professor East campus Shandong University of technology Zibo Shandong Province P. R. China. 255012 Fang He PhD. associate Professor East campus Shandong University of technology Zibo Shandong Province P. R. China. 255012

＜正＞ Biomass pyrolysis liquefaction is a thermo chemical process that converts biomass into a liquid product: bio-oil. This paper reviews the new development of biomass pyrolysis liquefaction technologies since 1980’s. Several pyrolysis processes and technologies are introduced in details. These technologies include Waterloo Fast Pyrolysis Process （Canada）, Vacuum Pyrolysis, DynaMotive Pyrolysis System, Vortex Ablative Pyrolysis, Entrained Flow Pyrolysis, Rotating Cone Reactor and Hot Ceramic Ball Heated Down-flow Tuber Reactor developed by us （in China）.

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考虑多因素的低渗透岩石相对渗透率

新疆石油地质 2003年第2期24卷 152-154页

作者：邓英尔刘慈群庞宏伟成都理工大学油气藏地质及开发工程国家重点实验室中国科学院渗流流体力学研究所江汉油田研究院四川成都610059 河北廊坊065007 湖北潜江433124

相对渗透率是制定油气田开发方案的重要基础资料。通常用非稳态流方法测定和用JBN方法计算它,但未考虑非达西流及毛管力的影响,故只适合于中高渗透岩石达西渗流的情形,且要求非稳态相对渗透率实验驱替速度较高。针对水湿和油湿岩心两种... 详细信息

相对渗透率是制定油气田开发方案的重要基础资料。通常用非稳态流方法测定和用JBN方法计算它,但未考虑非达西流及毛管力的影响,故只适合于中高渗透岩石达西渗流的情形,且要求非稳态相对渗透率实验驱替速度较高。针对水湿和油湿岩心两种情形,分别导出了同时考虑启动压力梯度、毛管力及重力的相对渗透率公式,不受实验驱替速度较高的限制,解决了低渗透岩石非稳态相对渗透率的实验测定和计算方法问题。

关键词：低渗透储集层非达西流相对渗透率不稳定流动

THE CHEMISTRY OF NANOSCALE ORGANOIMIDO DERIVATIVES OF POLYOXOMETALATES

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THE CHEMISTRY OF NANOSCALE ORGANOIMIDO DERIVATIVES OF POLYOX...

Asia Conference on Nanoscience and Nanotechnology Abstracts Book

作者： PINGFAN WU QIANG Li YONGGE WEI YUAN WANG PING WANG HONGYOU GUOState Key Laboratory for Structural Chemistry of Unstable and Stable Species College of Chemistry and Molecular engineering Peking University Beijing 100871 ChinaDepartment of Bioengineering Hubei University of technology Wuhan 430068 China Department of Chemistry Beijing University of Chemical and technology Beijing 100029 China

＜正＞ Organoimido derivatives of polyoxometalates play very important roles in the supramolecular chemistry and chemistry of materials based on polyoxometalates because they are valuable building blocks for constructing novel nanostructured organic-inorganic hybrid materials with unique catalytic, photo and electronic properties. However, their synthetic chemistry has not been well-developed since the first work reported by Maatta et al. Three years ago, one of us, together with his coworkers at UMKC, developed an efficient and convenient reaction protocol to give the arylimido derivatives of hexamolybdate, [Mo6O19]2-, and pentatungstenmolybdate, [MoW5O19]2-, using a carbodiimide, i.e., DCC （N,N’-dicyclohexylcarbo- diimide） as the dehydrating agent, and also found that the derivatives with iodo and ethynyl groups could undergo carbon-carbon coupling reactions in the presence of Pd catalyst. In this paper, we will give a brief review on this work and introduce our recent progresses in the synthetic and crystal structural chemistry of nanoscale organoimido derivatives of polyoxometalates.

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多级计算机集成的数字控制系统及数控加工程序信息的传递和编辑

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南京理工大学学报(自然科学版) 1982年第3期 99-112页

作者：邓子琼 R.Hoffman Lecture East China engineering Institute Nanjing PRC 加拿大麦吉尔大学(McGill University) 副教授

本文介绍一个两级计算机集成数字控制系统的软件工作原理,即阐述在已经事先将数控加工程序存储于中型计算机磁盘中后,系统软件如何将这些数控加工程序传递给下一级微处理计算机,以及在这些数控加工程序到达微处理机后,若对其中的某些部... 详细信息

本文介绍一个两级计算机集成数字控制系统的软件工作原理,即阐述在已经事先将数控加工程序存储于中型计算机磁盘中后,系统软件如何将这些数控加工程序传递给下一级微处理计算机,以及在这些数控加工程序到达微处理机后,若对其中的某些部分需要加以修改,系统软件又如何对这些数控加工程序进行修改编辑等。

关键词：数控加工记忆微处理程序段计算机数字控制系统

USB接口在数字超声探伤PC机外置盒中的应用

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沈阳工业大学学报 2004年第3期26卷 303-305页

作者：钱骁傅元沈阳工业大学信息科学与工程学院辽宁沈阳110023

以USB接口在数字超声探伤PC机外置盒中的应用为实例,简单介绍了USB技术,并着重介绍了如何结合USB协议规范利用USB控制器PDIUSBD12来进行USB的硬件、软件设计.

关键词： USB接口数字超声探伤外置盒

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On the Organizational Dynamics of the Genetic Code

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Genomics,Proteomics & Bioinformatics 2011年第Z1期 21-29页

作者： Zhang Zhang1 and Jun Yu1,2* 1Plant Stress Genomics Research Center, Division of Chemical and Life Sciences and engineering, King Abdullah University of Science and technology, Thuwal 23955-6900, Saudi Arabia 2CAS Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 100029, China.

The organization of the canonical genetic code needs to be thoroughly illuminated. Here we reorder the four nucleotides-adenine, thymine, guanine and cytosine-according to their emergence in evolution, and apply the organizational rules to devising an algebraic representation for the canonical genetic code. Under a framework of the devised code, we quantify codon and amino acid usages from a large collection of 917 prokaryotic genome sequences, and associate the usages with its intrinsic structure and classification schemes as well as amino acid physicochemical properties. Our results show that the algebraic representation of the code is structurally equivalent to a content-centric organization of the code and that codon and amino acid usages under different classification schemes were correlated closely with GC content, implying a set of rules governing composition dynamics across a wide variety of prokaryotic genome sequences. These results also indicate that codons and amino acids are not randomly allocated in the code, where the six-fold degenerate codons and their amino acids have important balancing roles for error minimization. Therefore, the content-centric code is of great usefulness in deciphering its hitherto unknown regularities as well as the dynamics of nucleotide, codon, and amino acid compositions.

关键词： genetic code codon GC content purine content organizational dynamics compositional dynamics

The Distributed Gateway Interworking with SIP/H.323

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The Journal of China Universities of Posts and Telecommunications 2001年第1期8卷 7-14页

作者： XU Zhan qi 1,\ CAO Xi ren 2,\ LI Bo 2,\ FANG Qiang 3 Foundation item: This work was supported by HK contract CRC98/01.EG03. Biography:\ XU Zhan qi(1962-), male, associate professor, National Key Lab on ISN, Xidian University, interested in the r National Key Lab on ISN Xidian University Xian 710071P.R. China HK University of Science & technology Hong Kong P.R.China Department of Telecommunication engineering Xi'an University of Posts & Telecommunications Xi'an 710061 P.R. China

The brief description and comparison are given to the following two signaling protocol standards that are currently used in Internet: ITU T Recommendation H .323 and IETF Session Initiation Protocol ( SIP ). After the introduction to the latest Distributed Gateway ( DG ) architecture and its internal protocol Media Gateway Control Protocol ( MGCP ), we describe a framework for DG interworking with H.323/SIP . Other topics, such as address translation, relocation of signaling transport protocol architecture and adding components to DG for interworking with H.323/SIP , are also addressed.

关键词： internet telephony H.323 SIP MGCP signaling gateway

维普期刊数据库

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1984年我国采矿科技发展情况述评

有色金属工程 1985年第1期 10-19页

作者： Mining Department, Northeast Institute of technology 东北工学院采矿系

文章从矿山地质、露天开采、地下开采、井巷工程、爆破工作、岩石力学、岩石破碎、矿井通风与安全技术等方面,比较全面的对1984年我国采矿科学技术发展情况进行了介绍和评述,并在此基础上就近期的发展方向做了初步预测。此文是由本刊... 详细信息

文章从矿山地质、露天开采、地下开采、井巷工程、爆破工作、岩石力学、岩石破碎、矿井通风与安全技术等方面,比较全面的对1984年我国采矿科学技术发展情况进行了介绍和评述,并在此基础上就近期的发展方向做了初步预测。此文是由本刊编辑部特邀东北工学院采矿系各专业教研室富有经验的教授、副教授、技术专家集体讨论撰写的。

关键词：矿山爆破钎头露天矿山乳化炸药乳胶炸药矿山地质矿物学机械化作业线机械化生产线液压凿岩机计算机爆破工作非电导爆管井巷工程矿业工程留矿采矿法留矿法天井钻机反井钻机掘进机械矿山通风