高血压病Ⅲ期脑彩超、脑干听觉诱发电位和头部CT对比研究

目的：探索早期诊断和预防脑血管疾病的方法。方法：对50例高血压病Ⅲ的病人进行脑极超，脑干听[秀发电位和头部CT检查，并进行对比分析，结果：反应脑血流动力学改变的脑彩超最敏感，其次是反应脑动能改变的脑干听觉的诱发电位，而反应脑器质改变的头部CT敏感性较差，结论：脑彩超，脑干听觉诱发电位可作为早期诊断和预防脑血管病的客观指标。     

合成洗涤剂生产废水处理工程的设计与运行

介绍了混凝沉淀—生化处理—接触过滤—活性炭—吸附工艺处理合成洗涤剂生产废水的工程实践。根据实验 ,确定三氯化铁为主要混凝剂 ,p H值最佳范围为 5 .5～ 6 .0 ;工程调试表明 ,有效调节原水水质和强化混凝处理是保证后续生化处理系统稳定运行的前提。在进水 CODcr3 0 0～ 5 0 0 m g/L、L AS 5 0～ 15 0 mg/L时 ,经过处理后出水可达标排放 (CODcr≤ 10 0m g/L ,L AS≤ 5 mg/L )。     

心跳间隔增量序列的多尺度分析及临床应用

通过对心跳间隔序列、心跳间隔增量序列的多尺度熵和多尺度标准差分析, 发现心跳间隔序列的多尺度熵主要反映年龄对心脏活动水平的影响, 不足以作为区分充盈性心衰的诊断依据. 然而, 心跳间隔增量序列的多尺度熵分析却显示充盈性心衰和房颤患者心率变异性的复杂性较健康人有显著降低, 揭示两种疾病的心率变异性有着共同的潜在动力学性质. 提出了以心跳间隔增量序列在尺度4下的样本熵作为充盈性心衰和房颤的诊断依据并给出了参考值. 通过分析不同心功能分级对结果的影响, 发现即使是轻度心衰也能显著区别于健康人, 意味着该参数可以用于心衰的早期诊断.     

Method for tumor recognition with short dynamic PET images: theory and simulation study

A new method was provided in this paper to recognize tumor in PET images automatically and reduce the waiting time of patient. Based on the unsupervised clustering algorithm (ISODATA), this method diagnoses tumor with short dynamic PET images. The theoretical basis of this method is that the metabolic characteristics of different tissues, represented by time activity curve in the region of interest, are distinctive. The computer program was developed and validated using simulated dynamic PET data with small tumor in lung. Simulation study shows that, this method could recognize tumor with the short dynamic PET data in 10 min successfully, and this method was not sensitive to initial cluster center.     

美式箱变在城市道路照明工程中的应用

美式箱变体积小、重量轻、噪音低、安装使用简便、安全可靠、造型美观，适合城市道路照明负荷的要求，能够有效抑制高次谐波电流对城市电网的污染。     

科研工作应成为高校图书馆工作重要组成部分

提出了科研工作应成为高校图书馆工作重要组成部分的观点，结合南通师院图书馆实践，系统论述了高校图书馆开展科研工作的必要性，有利条件及其与业务工作的关系，并阐述了图书馆科研工作的管理机制及组织方法。     

桥式起重机运动模拟

在桥式起重机是应用最为广泛的起重机械，文章综合应用现代设计手段和方法，在桥架、起升机构、小车运行机构和大车运行机构的基础上，建立三维运动分析的数学模型，从而对整机和各部件的运动速度、加速度以及因运动引起的载荷进行分析，模拟各种运动规律和运动轨迹，从而实现起重机运行情况的模拟，为起重机的设计提供可靠的参考依据。     

Evaluation of genetic diversity and relationships within and between two breeds of duck based on microsatellite markers

The genetic diversity of two natural populations (M, N) of Beijing duck (Anas platyrhynchos) and 11 artificially selected lines of Beijing duck (A, B, E-L, O) from China Gold Star Duck Production Ltd., along with two Cherry Valley duck lines (C and D) from the British Cherry Valley Livestock Division, was evaluated using 18 microsatellite markers covering 16 linkage groups. A phylogenetic tree of the 15 populations of duck, formed of four main branches, was constructed from Nei’s D_A genetic distance. The mean genetic differentiation index (F_ST) in all loci, Nei’s standard genetic distance (Ds), and the genetic distance D_A between the Beijing duck and the Cherry Valley duck were 0.075, 0.143 and 0.142, respectively. These results demonstrated a high degree of genetic similarity between the two breeds and supported the hypothesis that the Cherry Valley duck was derived from the Beijing duck. The F_ST matrix of seven clusters of Beijing duck suggested that the efficiency of selection was not significant to some extent and should be supplemented by marker-assisted selection.     

巷道围岩应力分布影响因素的研究

通过有限元计算和光弹模拟方法对影响巷道自稳结构形状的因素进行了探计,分析了埋深、侧压秒数、巷道形状及裂隙等因素的变化对集中应力圈的作用,为合理选择巷道支护手段提供依据.     

导弹无线电引信半实物仿真系统设计

介绍了导弹无线电引信模拟仿真系统的现状,分析了导弹无线电引信目标散射模型,根据亮点法和面元法模型设计和实现了导弹无线电引信的半实物仿真系统,通过中频调制实现引信探测脉冲的变换,采用模块化方法设计亮点回波模拟器,满足系统的可扩充性和可维护性。采用仿真数据分布式存储,满足半实物仿真系统实时性要求。