基于混沌振子的微弱信号检测方法研究

分析了During方程的基本形式以及During振子的混沌运动，阐述了基于相平面变化进行微弱信号检测的工作原理，并推导出系统发生间歇混沌现象的频差条件和相位差对于系统特性的影响。试验证明：该振子对与参考信号频差较小的周期小信号具有敏感性，对白噪声和与参考信号频差较大的干扰信号具有免疫力。     

试论政府运行机制创新中的薄弱环节及其成因

本文认为，而对当今中国改革与发展的历史性转变，政府运行机制创新中的决策机制创新滞后、协调机制创新弱化、监督约束机制创新乏力和应急处理机制创新迟缓等问题十分突出。而国家公务员思想观念和政府运行机制创新制度化的滞后，以及公共行政体制改革的不到位则是其主因。     

大米胶稠度近红外光谱分析数学模型的建立

胶稠度是评价大米蒸煮食用品质的重要指标之一。研究了运用近红外光谱分析技术检测大米胶稠度的测试原理，对60个样品的光谱数据用偏最小二乘法(PLS)建立了测定大米胶稠度的数学模型，其回判结果与化学分析值之间的相关系数为0.95，建模标准差为0.66；用41个样品对建立的数学模型进行了交叉验证，其检测结果与用标准化学分析方法测得结果的相关系数达0.92，预测标准差为0.78。试验证明，可以利用近红外光谱分析技术对大米胶稠度进行快速检测。     

蛋白质合成抑制剂对萌发玉米超弱光子辐射的影响

为了揭示种子萌发过程中超弱光子辐射机理,分别采用蛋白质合成的转录抑制剂放线菌素D(actinomyin D,AMD)和翻译抑制剂环己亚胺酮(cycloheximide,CHM)处理萌发玉米种子,研究了玉米萌发过程中鲜质量的变化以及自发光子辐射和外界光诱导的延迟光子辐射的变化。结果表明,50μg/m L的AMD部分抑制了萌发玉米鲜质量的增长,100μg/m L的CHM完全抑制了萌发玉米鲜质量的增长,萌发玉米自发光子辐射强度的增长与种子鲜质量的增长呈现正相关(相关系数r分别为0.95492、0.93218和0.96235)。研究还发现,在玉米萌发过程中,AMD和CHM对延迟光子辐射的增长有不同的抑制作用,CHM部分抑制了延迟光子辐射的初始光子数、相干时间和积分强度的增大,AMD则使初始光子数、相干时间和积分强度不再增加。研究结果为揭示种子萌发过程中超弱光子辐射的机理及其技术开发提供参考。     

Histomorphological studies of the perinatal pig: comparison of five mortality groups with unaffected pigs

The results of a histological examination of organs obtained from 5 clinically and morphologically identified and described mortality groups of pigs dying during the perinatal period (0–60 h of age) were compared with the results obtained from the same examination of unaffected, apparently normal pigs (0.4–60 h of age). The histomorphological pictures were judged blind according to a scale of 1 to 4, where 1 = none or insignificant, and 4 = a high degree of a specific organ characteristic. The results for each organ characteristic were analysed statistically.     

低温弱光对CMS三系辣椒幼苗形态指标与冷害指数的影响

以辣椒CMS三系的不育系、恢复系与相应杂交一代幼苗为材料,研究了辣椒幼苗对低温弱光及其恢复过程的响应。结果表明:低温弱光胁迫下,辣椒幼苗植株生长减缓或停止,外部形态出现部分变化。低温弱光处理10天后,与对照相比各试验材料株高增加缓慢,基本停止生长,但恢复系表现出较好的低温弱光耐受性。从外部形态与冷害指数综合来看,杂交种与恢复系受害程度明显较轻。     

Combined with the Decorating Kindergarten Electrical Design

As kindergarten class decorate enhancement, to the requirement of the electrical design more and more is also high. This paper is based on the present of the more common kindergarten, respectively from the design and high voltage electricity design two aspects and so on many small point to electrical design in this paper.     

HPAM/Cr3+弱凝胶调驱体系的室内研究

在室内研制了一种可供较高温度、高矿化度油藏深部调剖用的HPAM/Cr3 弱凝胶调驱体系.考察了聚合物浓度、交联剂浓度、稳定剂浓度、温度、矿化度以及pH值对成胶性能的影响.确定了HPAM/Cr3 弱凝胶体系的最佳形成条件:HPAM聚合物1200mg/L;铬交联剂J(以Cr3 计)浓度40mg/L;稳定剂W浓度40mg/L;体系pH值6～8;最佳使用温度70℃.HPAM/Cr3 弱凝胶体系可实现成胶时间可控,凝胶强度可调.     

Statistical comparison of a new rheological method for defining changes in mash consistency during mashing with the established Rapid Visco Analyser

The determination of mash consistency proved to be difficult but is of great importance particularly with regard to process and quality control. Therefore, the aim of this study was to develop a new rheological method for precisely determining changes in mash consistency occurring during the mashing process. For that purpose, five mashes with various levels of unmalted oats (0–40%) have been analyzed using a Physica MCR rheometer equipped with a paddle-shaped rotor enabling mash particles to be kept in suspension throughout the rheological measurement. For validating this new method, a statistical comparison with the established Rapid Visco Analyser (RVA) has been carried out. For this purpose, the mash consistency curves have been described by regression functions with the aim to determine characteristic curve points mathematically correct. As a result, the start and end point of starch gelatinization/liquefaction have been well-defined. By calculating the coefficients of determination, good to very good linear correlations between respective curve values and adjunct levels have been found for both methods (MCR and RVA). By calculating the repeatability, however, it has been revealed that the precision of the MCR method is significantly better than that of the RVA method.