潮流计算中的数学方法——牛顿—拉夫逊法

本文介绍了一种解非线性代数方程组的数学方法——牛顿-拉夫逊法,并将其应用于电力系统潮流计算中。采用本文方法的计算结果表明该教学方法在电力系统潮流问题中是收敛的;同时计算结果与电力专业软件的计算结果保持了一致,从而验证了结果的正确性。     

关于参数方程中参数的选取

一条曲线是具有某些特征的点的轨迹,在直角坐标系(或极坐标系)中,当一点的坐标(x,y)(或!,")都是同一个变数t的函数时,如果对于t的每一个允许值,方程所确定的点都在某一条曲线上,同时这条曲线上的任意一点的坐标都可以由t的某一个允许值通过方程得到。那么这个方程就叫做曲线的参数方程。     

脱氮原理的几种新发现

本文对脱氮原理的几种新发现进行了阐述,对各种新原理进行了比较说明。     

Finding finer functions for partially characterized proteins by protein-protein interaction networks

Based on high-throughput data, numerous algorithms have been designed to find functions of novel proteins. However, the effectiveness of such algorithms is currently limited by some fundamental factors, including (1) the low a-priori probability of novel proteins participating in a detailed function; (2) the huge false data present in high-throughput datasets; (3) the incomplete data coverage of functional classes; (4) the abundant but heterogeneous negative samples for training the algorithms; and (5) the lack of detailed functional knowledge for training algorithms. Here, for partially characterized proteins, we suggest an approach to finding their finer functions based on protein interaction sub-networks or gene expression patterns, defined in function-specific subspaces. The proposed approach can lessen the above-mentioned problems by properly defining the prediction range and functionally filtering the noisy data, and thus can efficiently find proteins’ novel functions. For thousands of yeast and human proteins partially characterized, it is able to reliably find their finer functions (e.g., the translational functions) with more than 90% precision. The predicted finer functions are highly valuable both for guiding the follow-up wet-lab validation and for providing the necessary data for training algorithms to learn other proteins.     

薄抹灰外墙外保温体系各构造层对体系质量的影响分析

本文通过对影响薄抹灰外墙外保温系统各构造层的产品质量因素及性能分析,指出薄抹灰外墙外保温系统各构造层材料生产及施工过程应控制的因素,确保薄抹灰外墙外保温系统达到质量要求。     

腰麻-硬膜外联合麻醉在剖宫产术的应用

目的：观测评价腰麻—硬膜外联合麻醉（CSEA）在剖宫产术中的效果。方法：初产妇80例,头位单胎,年龄（26.5±2.8）岁,体重（61.7±8.3）kg,孕期（39.15±1.9）周。随机分硬膜外（EA）组和腰麻—硬膜外联合麻醉（CSEA）组。分别观测麻醉后3、5、10、15、20、25min平均动脉压（MAP）,麻醉诱导到胎儿娩出时间（I-D）,子宫切开至胎儿取出时间（U—D）,硬膜外局麻用药量,麻醉效果评价。结果：CSEA组与EA组比较,I-D、U-D短,硬膜外用药量少。麻醉效果CSEA组优占97%,良为3%,差为0,明显高于EA组。结论：CSEA用于剖宫产术效果优于单纯EA。     

大尺寸充气体黑洞中激光等离子体相互作用

本文是根据Ｒ．Ｅ特内、Ｒ．Ｌ考夫曼等人之作编译而成。大尺寸充气体黑洞具有类似于国家点火装置（ＮＩＦ），所预期的等离子体条件，可用来测量受激布里渊散射（ＳＢＳ）。上述等离子体是热的（３ｋｅＶ），电子密度高，处于似稳态，而在大于２ｍｍ长度上是均匀的。另外，还介绍了类似的ＮＩＦ照射条件，低ＳＢＳ背光的观测。     

论疏水相互作用的生物学意义

本文用热力学和非平衡态热力学观点探讨了疏水相互作用的本质及特征，进而阐明其重要的生物学意义：维系生命系统结构、驱动有序化过程．     

吲哚化合物的光化学——Ⅲ.薄层层析—光度法对2—苯基吲哚敏化光氧化反应体系的定量分析研究

本文为2—苯基吲哚(1)的光氧化反应体系建立了一种薄层层析—紫外分光光度定量分离分析方法。该法灵敏、简便准确度和精密度均好。