鱼种塘混养淡水鲳试验初报

本文阐述了淡水鲳首次在沈阳地区饲养成功的经验,经济效益明显.     

丹东市区旅游产业调查与投入产出分析

简述了丹东旅游资源的调查结果及影响旅游产业的各个因素 ,建立旅游产业的投入产出模型 ,并完整地描述了各因素之间的依赖制约关系和各自的作用 .提出了与现行管理指标相一致的模型转换方法 ,较好地适应了开发、管理、经营等多种的要求 .模型很好地体现了旅游产业的经营特点 ,它是一种适于计算机自动实现的投入产出模型 .为地方旅游产业的发展及地方经济的腾飞提供科学决策依据.     

降低PLC控制系统硬件费用的方法

主要阐述通过改进接线与编程相结合解决PLC输入／输出点不足的几种方法，从而降低PLC制系统硬件的费用。     

经腹贲门癌切除、纵膈内机械吻合的手术配合

目的：介绍经腹贲门癌切除，纵膈内机械吻合术治疗贲门癌的手术配合。方法：针对44例有糖尿病，高血压，心功能不全的贲门癌患者，采用经腹切除，纵膈内机械吻合术，根据手术配合经验，介绍了手术护士配合的详细步骤与方法，强调心理护理的重要性。结果：手术均获得成功，患者安全返回病房。结论：手术中护士的配合是重要的，尤其是使用吻合器的配合。     

C语言的汉字处理技术

本文讨论了汉字的输入，显示和输出函数，使用Ｃ语言，设计了汉字的输入，显示和输出函数，这些函数与西文软件兼容，可以用在西文软件的汉化方面。     

Gene product expression of cyclin D<Subscript>2</Subscript> and p16 during the transition from cardiac myocyte hyperplasia to hypertrophy

The current study was to investigate mRNA expression of cyclin D₂ and p16 during the transition from cardiac myocyte hyperplasia to hypertrophy. Cultured cardiac myocytes (CM) and fibroblasts (FC) obtained from 1-day-old Sparague-Dawley rats were used in this study. We have determined (1) hyperplasia by cell growth curve and fluorescence activated cell sorting (FACS); and (2) ultrastructure by electron microscope observation; and (3) expresions of cyclin D₂ mRNA and p16 mRNA by using in situ hybridization and image analysis. The results were shown (1) Results of cell growth curve and FACS analysis showed CM could proliferate in the first 3 cultured days (4 days in postnatal development). But the ability decreased quickly, concomitant with the differentiation. (2) The ultrastructure of CM showed the large amount of myofilaments and mitochondrion and FC showed moderate amount of rough endoplasmic reticulum. (3) The expression of cyclin D₂ mRNA in 3−, 4−, 5−day CM group was 0.89 times (p<0.05), 0.80 times (p<0.05) and 0.56 times (p<0.01) of that in 1-day group respectively. P16 mRNA in 2−, 3−, 4−, 5−day CM group were 1.63 times (p<0.01), 1.72 times (p<0.01), 1.99 times (p<0.01) and 2.84 times (p<0.01) of that in 1−day group respectively. It can be concluded that cultured neonatal rat cardiac myocytes could proliferate during the first 3 cultured days, but the ability of proliferation decreased, from the fourth day, concomitant with differentiation. Cyclin D₂ and p16 have the key roles during the transition from myocyte hyperplasia to hypertrophy. Biography: Zhang Yu-xia (1974-), female, Master, research direction: cardiovascular pathology.     

Cell-to-cell coupling studied by diffusional methods in myocardial cells

Summary The diffusion of large molecular substances from cell to cell in multicellular and enzymatically isolated cell pairs is described. Permeability of the gap junctional membrane to these molecules and the critical diffusing diameter of the myocardial gap junctional channel are discussed.     

基于伪输出的鲁棒PI型广义预测自校正控制器

本文提出了一种新型的广义预测自校正控制器。由于在控制器的设计中，所用输出序列为量测输出与基于辨识模型的输出综合而成的，并且控制器采用了ＰＩ型目标函数，因此该控制器对未建模动态具有较强的鲁棒性。     

Ventricular fibrillation threshold during acute ischemia in hypertrophied rat hearts

Summary Ventricular fibrillation threshold was significantly lower in hypertrophied hearts than in normal hearts. Ischemia produced by coronary occlusion reduced fibrillation threshold in both normal and hypertrophied hearts, but the maximum reduction in fibrillation theshold was observed earlier in hypertrophied hearts.     

通用阵列逻辑（GAL）的5种工作模式

通用阵列逻辑为数字系统的设计带来了根本的变革。为了胜ＧＡＬ替代一般的数字电路，提高设计质量，研究了ＧＡＬ的核心电路输出逻辑宏单元的５种工作模式，并指出了各种模式在使用中应注意的问题，使数字系统的设计更加简化和方便。