科学与技术

Cloning is the process that an offspring which has the same genomes with matriline is procreated by using agamogenesis technology. And Cloning technology is an important technology in life science.

克隆是利用生物技术由无性生殖产生与原个体有完全相同基因组之后代的过程，它是现代生命科学的一项重要技术。

Base on the techniques of the Simulation Modeling and analysis, and computer graphics, this paper research the theory and method o...

本文综合运用油藏数值模拟技术、仿真数值分析方法及计算机图形学等科学理论，进行了油气藏开发动态过程仿真技术与方法研究。

In the light of cost index and pollution degree, the characteristics of kinds of pulp are analyzed in detail, and the GP pulp which is low cost, high-yield, no-pollution is chosen as the material of tableware. Based on material element analyzed, shaping technology is designed, the to and for single plane shaping equipment which is high shaping quality, high production efficiency and is easy to automatize is chosen. All kinds of measure are taken to solve the problems which are inequality in the shaping process of GP pulp, and dosage which matches with GP pulp is chosen. Some ways of fixing shape and heat up are analyzed, the technology of saving energy of heat pressing to fix shape being composed of oil heat and only one fixed shape in the mold is applied, with which it is high production efficiency, low cost to fix shape effectively, which saves energy 30 percent. In order to make the production line meet with material of GP pulp, measure are taken to solve the problem of pulp adhered to netlike molding which can lead to carry material difficult, the structure of fully automatic equipment is renovated, the loaded beam is optimizationally designed to make equipment structure compactand improve location precision and products quality. According to technologic flow and actual characteristic, Omron PLC is chosen as the core of the control system, proximity switch as detect unit take the place of touch switch, software is designed reasonably according to time order figure, hardware is simplified, the reliability of system is advanced, the stability of system is assured to make production order. Intelligence neuron PID system is studied theoretically which is made up of both neuron with self-organizing and self-learning function and ordinary PID with the characteristic of the simple structure and high stability, which can automatically tune the parameter with the change of system parameter, remain perfect performance.

按成本指标和污染程度分析各浆料的特点，选择低成本、高得率、无污染的磨石机械浆为原料，在原料组分分析的基础上，设计成型工艺，选择成型质量好、生产率高、易实现自动化的往复式单板成型机，采取各种措施解决GP浆成型不均匀的问题及选择与机械浆相匹配的助剂；分析几种定型方式和加热方式，采用定型效果好、生产率高、成本低的油加热与模内一次性定型相结合的热压定型节能技术，节能30％；为了使生产线适应磨石机械浆原料，采取相应措施解决由于粘网造成物料转移困难，对全自动设备结构进行改进设计，着重对物料传送系统的关键部件——承载梁的进行优化设计，使设备更加紧凑合理，提高设备的定位精度和产品质量；根据生产线工艺流程和现场特点，选用OMRON CPM1A型PLC为主核心，接近开关作为检测元件，替代有触点开关，选用可编程终端代替常规面板按扭，并按照时序图科学合理地设计软件，有效地简化系统硬件构成，提高系统的可靠性，保证系统的稳定性，从而使生产更加通畅有序；从理论上探索将神经元应具有的自组织、自学习要求与PID控制结构简单、稳定性好的全自动纸浆模塑餐具生产线的研究特点结合起来，构成神经元自适应PID控制器，当参数的变化时，系统能自行参数整定，保持优良的工作性能指标，满足实际需求。

LLNL pursues major research programs in energy and environment, bioscience and biotechnology, and basic science and advanced technology.

LLNL奉行的重大研究项目，能源与环境，生命科学和生物技术，基础科学和先进技术。

To oversee all the details yourself in person; to be at once pilot and captain, and owner and underwriter; to buy and sell and keep the accounts; to read every letter received, and write or read every letter sent; to superintend the discharge of imports night and day; to be upon many parts of the coast almost at the same time -- often the richest freight will be discharged upon a Jersey shore;-- to be your own telegraph, unweariedly sweeping the horizon, speaking all passing vessels bound coastwise; to keep up a steady despatch of commodities, for the supply of such a distant and exorbitant market; to keep yourself informed of the state of the markets, prospects of war and peace everywhere, and anticipate the tendencies of trade and civilization -- taking advantage of the results of all exploring expeditions, using new passages and all improvements in navigation;-- charts to be studied, the position of reefs and new lights and buoys to be ascertained, and ever, and ever, the logarithmic tables to be corrected, for by the error of some calculator the vessel often splits upon a rock that should have reached a friendly pier -- there is the untold fate of La Perouse;-- universal science to be kept pace with, studying the lives of all great discoverers and navigators, great adventurers and merchants, from Hanno and the Phoenicians down to our day; in fine, account of stock to be taken from time to time, to know how you stand.

亲自照顾一切大小事务；兼任领航员与船长，业主与保险商；买进卖出又记账；收到的信件每封都读过，发出的信件每封都亲自撰写或审阅；日夜监督进口货的卸落；几乎在海岸上的许多地方，你都同时出现了似的；——那装货最多的船总是在泽西岸上卸落的；——自己还兼电报员，不知疲倦地发通讯到远方去，和所有驰向海岸的船只联络；稳当地售出货物，供给远方的一个无餍足的市场，既要熟悉行情，你还要明了各处的战争与和平的情况，预测贸易和文明的趋向；——利用所有探险的成果，走最新的航道，利用一切航海技术上的进步；——再要研究海图，确定珊瑚礁和新的灯塔、浮标的位置，而航海图表是永远地改而又改，因为若计算上有了一点错误，船只会冲撞在一块岩石上而至于粉碎的，不然它早该到达了一个友好的码头了——，此外，还有拉·贝鲁斯的未知的命运；——还得步步跟上宇宙科学，要研究一切伟大的发现者、航海家、探险家和商人，从迦太探险家饭能和腓尼基人直到现在所有这些人的一生，最后，时刻要记录栈房中的货物，你才知道自己处于什么位置上。

With the computer's development and popularization, digitizer is replacing simulation device gradually. The computer measure and control technology plays a more and more important role in the process of production and scientific research.

随着计算机技术的发展与普及，数字设备正越来越多地取代模拟设备，在生产过程控制和科学研究等广泛的领域中，计算机测控技术正发挥着越来越重要的作用。

According to actual condition, a model of wall thickness of rotary kiln is established. The constant coefficients in the model, including thermal conductivity, heat transfer coefficient, Fourier coefficient and contact resistance, are closely calculated. A formula of contact resistance is draw from a great deal of data of surface and inner temperature of rotary kiln. The wall thickness of rotary kiln is simulated by MATLAB. The simulation result is transmitted from MATLAB to DELPHI through a group of interface functions compiled by VC++. The basic graphs-circle and line are analyzed by the means of the technique of Visualization in Scientific Computing and the Bresenham arithmetic, and are realized the visualization of the wall thickness. The contents of communication between master computer and slaver computer are designed and the error control technique, the idea of multi-thread and the embedded assembly language are applied to realize the temperature data transmission and graph transmission, which largely improved the speed of transmission and the reliability and stability of system.

建立了符合现场实际的回转窑壁厚数学模型；结合现场采用红外测温仪测量所得的温度数据和回转窑的实际结构数据，确定出适合该模型的定常系数(包括导热系数、换热系数、傅立叶系数、接触热阻等)，并得出与回转窑工况的相近的接触热阻公式ln=T~(0.5154)-36.7868；利用MATLAB软件仿真出回转窑壁厚，并将运算结果通过在VC++的编译环境下编译出MATLAB和DELPHI的接口函数传输到该监测系统中，实现了温度数据的转换和交换；运用科学计算可视化技术和Bresenham扫描转换算法对基本图形——圆和直线进行分析，从而实现了仿真后的壁厚数据可视化；在研究异步串行通信方式的基础上，设计了该系统上下位机功能和通信内容，并运用差错控制技术、多线程思想以及嵌入式汇编语言实现了温度数据和图形数据在上下位机之间的远程传输，提高了数据传输的速率和系统的可靠性、稳定性。

In this paper the key points discussed were that, under the condition of a sharp hypsography of desert areas of Ordos basin, we used some new geophysical methods in the investigation of surface structure to obtain high accurate surface structure data and provide reliable scientific foundation for data acquisition and process; we dealt with the optimum coupling of surface geophones and the digital realization technique in desert areas, dug into a method of high frequency compensation according to attenuations by absorption near surface, adopted data processing and correction technique, solved high frequency attenuation and geophone coupling, eliminated the influences of sharply transverse fluctuation of hypsography in desert area on the seismic data, enhanced the fidelity and SNR of seismic section, and finally picked up more geologic information on the seismic profile and improved the precision of the lateral prediction for the reservoir beds.

本文旨在研究鄂尔多斯盆地沙漠区地表变化比较大的情况下，在表层结构调查中通过应用一些地球物理新方法，以获取高精度的表层结构数据，为资料采集和数据处理提供更科学的依据；研究在沙漠区地表检波器最佳耦合的方式与数字实现技术，研究通过近地表的吸收衰减规律进行高频补偿的方法，采用数据处理校正技术，解决高频吸收及检波器耦合，消除沙漠区表层横向剧烈变化对地震资料的影响，提高地震剖面的保真度和信噪比，从而使更多的地质信息能够从地震剖面中反映出来，提高储层横向预测的精度。

The journal publishes original research articles, research reports, technical notes, scientific commentaries, news, views and review articles on genetics, evolution and molecular biology, including animal genetics, ethics, genetics of microorganisms, plant genetics, human and medical genetics, population and quantitative genetics, mutation and mutagensis, bioinformatics and evolutionary genomics, cytogenetics, and immunogenetics.

杂志刊载原始研究文章，研究报告，技术札记，科学评注，新闻，观点和评论文章，内容涉及遗传学，进化和分子生物学，包括动物遗传学，道德规范，微生物遗传学，植物遗传学，人类与医学遗传学，种群与数量遗传学，突变与突变发生，生物信息学和进化基因组学，细胞遗传学，和免疫基因组学。

Most of them can be employed as engineers in the fields of the research and development, process, equipment design, manufacture and management of i norganic nonmetallic materials.

培养能在无机非金属材料结构研究与分析、材料的制备和加工成型等领域从事科学研究、技术开发、工艺和设备设计、生产及经营管理的工程技术人才。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。