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Search Results: 1 - 10 of 382297 matches for " 王海红 "
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客体表象-空间表象-言语认知风格及其测验的研究进展
The Research of Object Imagery-Spatial Imagery-Verbal Cognitive Style and Measurement’s Develpoment
 [PDF]

李力,
Advances in Psychology (AP) , 2011, DOI: 10.12677/ap.2011.13019
Abstract: 本文综述了个体表征信息偏好性方式这一风格类型在理论上和代表性的测验工具的发展演变。通过前人对两类典型的测验工具信效度方面的研究,指出了目前客体表象-空间表象-言语表征风格测验存在的问题以及未来的发展方向,为编制新的信效度更好的测验工具奠定了一定的理论基础。
This article summarizes the preference representation on style type of individual, describles the evolution of its theories, and also shows the representative test tools. Trough the Previous research of two kind of representative test tools on their validity and reliablity,we point out the existence questions and the future development direction of object imagery-spatial imagery-verbal cognitive style test, and establish the theore- tical basis of new better test tools.
顶空气相色谱法测定氯苯达诺原料药中的残留溶剂含量
Determination of Residual Solvent in Clofedanol by Gas Chromatography with Headspace Sampling
 [PDF]

,, 张智, 胡丽
Pharmacy Information (PI) , 2015, DOI: 10.12677/PI.2015.43004
Abstract:
目的:建立顶空气相色谱法检验氯苯达诺盐酸盐原料药中残留溶剂的方法。方法:采用6%氰丙基苯基-94%二甲基聚硅氧烷为固定液的毛细管柱(DB-624, 0.53 mm × 30 m, 3.0 μm),程序升温,初始温度40℃,保持3 min,以20℃/min的速率升温至240℃,保持3 min;氢火焰离子化检测器(FID),检测器温度250℃,进样口温度200℃,载气为氦气,流速5 mL/min,进样体积1 mL。分流比1:1。结果:5种有机溶剂(甲醇、乙醇、乙腈、苯、甲苯)进样浓度与峰面积呈良好线性关系,相关系数均大于0.9990,加样回收率在96.0%~103.0%之间。结论:此法准确可靠,灵敏度高,可用于氯苯达诺中残留溶剂的测定。
Objective: To establish a GC method for the determination of residual solvent in clofedanol. Methods: DB-624 chromatographic column (coated with 6% cyanopropylphenyl-94% dimethylpolysiloxane, length 30 m, I.D. 0.53 mm, film 3.0 μm) was adopted. The column temperature was programmed, kept at 40?C for 3 min, and then increased by 20?C/min to 240?C for 3 min. The temperature of FID detector was 250?C and the temperature of inlet was 200?C. The carrier gas was He at a flow rate of 5 mL/min. The injection volume was 1 mL. Results: The calibration curves of five solvents all showed good linearity in a detected concentration range (r > 0.9990); the range of average recovery was between 96.0% and 103.0%. Conclusion: The method was accurate, reliable and sensitive, and can be used for assay of residual organic solvent in clofedanol.
道路互通式立交方案综合评价实用方法
,
中国公路学报 , 2002,
Abstract: ?根据灰色系统的有关理论,提出了灰色关联分析法.通过计算最优方案和备选方案之间的灰色关联度,对立交方案进行综合评价和分析,并且结合实例进行了验证.
林木场景漫游系统的研究与实现
陈世,
中国图象图形学报 , 2009, DOI: 10.11834/jig.20090632
Abstract: 由于林木本身结构复杂,因此在模拟中几何模型的面片数多。如何在保证一定的视觉真实感的前提下,尽量简化场景模型,实现林木场景的快速绘制,一直是计算机图形学领域的热点问题。提出了一种适合包含大面积林木的自然场景漫游系统的实现方法,即利用3维建模软件3dsmax构建场景模型,然后基于虚拟开发工具OpenSceneGraph(OSG)实现场景的实时绘制和漫游。充分利用软件的特点和功能,实现了包含大面积林木的自然场景的漫游,同时还根据相交测试原理实现了漫游过程中的碰撞检测。实验结果表明,此系统具有较高的绘制速度,能满足包含大面积林木的自然场景实时漫游的要求,同时能达到一定的场景真实感。
基于路网规划的道路立体交叉交通量预测方法
,
交通运输工程学报 , 2003,
Abstract: 道路立体交叉远景交通量预测是道路立交规划和设计的重要环节,根据交叉口交通流特性和规划路网的路段交通量,构造了立体交叉远景交通量预测模型。此模型通过迭代计算预测立体交叉口进口和出口之间的转向交通量,同时对模型中参数的计算进行了讨论。通过某一实例对模型进行了验证,结果表明该模型误差较小。
饲用植酸酶热稳定性的研究*
,,陈惠
微生物学通报 , 2004,
Abstract: 植酸酶是一种能将植物性饲料中植酸(盐)降解为肌醇和无机磷酸盐的酶类。其作为单胃动物的饲料添加剂,对提高畜禽业生产效益及降低植酸磷对环境的污染有重要意义。针对目前饲用植酸酶存在的热稳定性不高的问题,介绍了国内外近年来的研究进展,并提出了解决的方法。
水平布置间冷塔环境风影响的性能研究
Analysis on the Performance of the Auxiliary Cooling Tower in the Horizontal Arrangement from the Environmental Wind
 [PDF]

, 张喆, 杜弘, , 陈琦
Advances in Energy and Power Engineering (AEPE) , 2014, DOI: 10.12677/AEPE.2014.24007
Abstract:
本文针对2 ×600 MW核电机组空冷系统,研究其在环境风的各项因素变化时对间接空冷系统性能的影响。结果表明:虽然风向对间冷塔的影响相对直冷要减弱很多,但空冷系统对风速的敏感程度很大,风速增加散热能力降低,背压增加,风速的变化对间冷运行效果的影响非常直接,尤其空冷系统受不同风温和不同风速组合的影响更为敏感,风速风温增加散热性能降低相对更多,因此对于空冷系统来说,对环境风的影响进行分析研究具有重要的意义。
For the 2 × 600 MW air cooling system, the influence on the performance of auxiliary cooling system is studied when the factors in the environmental wind change. The result shows: the effect of the wind direction on the auxiliary cooling tower is less than the direct air-cooling tower. But the degree of sensitivity on the wind speed from the air cooling system is very big. With the wind speed increasing, the heat dissipation capability reduces, and the back pressure increases, so the changes of the wind speed have a direct influence on the operation effect of the auxiliary cooling tower. Especially the combination of the different wind speed and temperature also has a more sensitive effect on the air cooling system. With the increase of the wind speed and temperature, the heat dissipation capability reduces. So the analysis of the environmental wind has an important significance.
环境磷形态分析中的磷-31核磁共振技术
31-P Nuclear Magnetic Resonance (31P-NMR) in Environmental Phosphorus Analysis
 [PDF]

陆瑾, ,, 高博, 贾建丽
Hans Journal of Soil Science (HJSS) , 2013, DOI: 10.12677/HJSS.2013.13004
Abstract: 磷-31核磁共振(31P-NMR)技术因可以增强研究者对环境中磷素组分信息的认识而广受关注。本文综述了该技术在环境磷素形态表征方面的研究成果,对31P-NMR技术的原理、样品制备方法及分析流程进行了系统阐述。环境样品的制备过程(包括样品前处理方法、提取时间、提取剂比例、样品浓缩方法等)对检测结果的精密度和准确度具有显著影响。论文同时综述了该技术在土壤、湖泊、海洋及湿地磷循环等研究领域的研究成果,并对该技术未来的研究及应用重点进行了展望,旨在为环境磷形态分析中的核磁共振技术的发展应用以及标准化研究提供借鉴。
Due to its advantages in improving our knowledge about the P fractions in environmental samples, the 31-P nuclear magnetic resonance (31P-NMR) technology has received extensive attention. This paper summarized the current studies on the characterization of P fractions in sediments by using this technology, and described the technical principles, sample preparation method and analytical procedures of this technol- ogy. The preparation procedures of environmental samples have a significant influence on the accuracy and precision of testing results, including determination of sample pretreatment, extraction time, sample to ex- traction ratio and concentration method. The specific application fields of this technology were also summa- rized in this paper. 31P-NMR technology has been applied in the field of Soil, Lake, Ocean, Wetland, and has made a number of achievements. Some future research focuses were expected in this paper in order to pro- vide theoretic support for the development and application as well as standardization of 31P-NMR technology in the future.
基于DAC统计模型的卫星导航欺骗干扰检测
Detection of Spoofing of Satellite Navigation Receivers Based on Statistical Model of DAC
 [PDF]

张茴, 孙闽, , 沈雷, 邱雨, 甘一鸣
Hans Journal of Wireless Communications (HJWC) , 2014, DOI: 10.12677/HJWC.2014.45012
Abstract:
针对欺骗干扰信号常在时域、频域和空域与真实信号重叠,导致识别欺骗干扰难度较大的问题,本文假定真实发射机与欺骗干扰机射频前端器件除数模转换器(DAC)外均工作于理想状态,提出了一种基于DAC建模的欺骗干扰识别方法。首先,利用积分非线性(INL)和差分非线性(DNL)对DAC的非线性进行统计建模,提取特征向量;其次,基于似然比检测和欧氏距离法实现欺骗干扰识别;最后,通过仿真实验验证了方法的有效性。
Since real signals and spoofing signals are overlapped in time domain, frequency domain and time-frequency domain, it is not easy to distinguish them. In this paper, a new identification method based on the model of digital-to-analog converter (DAC) is proposed on a condition that the devices of transmitter and jammer are in desired state except the DAC. Firstly, the DAC is modeled with the integral non-linear (INL) and differential non-linear (DNL) to extract the parameter vector; secondly, the spoofing signals are identified by using a LRT detector and a na?ve method; lastly, the effectiveness of the proposed method is verified via simulation.
信阳茶区生态环境分析与评价
银峰,张继,
地理学报 , 1993, DOI: 10.11821/xb199305006
Abstract: 通过对信阳茶区与全国茶区生态环境对比分析,本文认为(1)温度是影响茶叶质量最关键的因素之一,北亚热带的温度条件是生产优质名茶的最佳条件之一;(2)信阳茶区地处北亚热带,区内水分条件优越,云雾条件良好,是优质茶叶的适生区;(3)信阳茶区的地貌类型以低山丘陵为主,宜茶地面积广阔,耕作强度小,发展茶叶生产的潜力较大;(4)信阳茶区茶树病虫害较少,农药使用量很少。因此,若经营得当,信阳茶区不仅会成为我国优质茶叶的产区,而且信阳茶叶也可在国内外市场上占据一定的优势。
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