影响精养鱼池水质的关键性因素及其调控

讨论了影响精养鱼池水质的关键性的因素，并结合养殖生产实践提出了具体的、有效的调控方法。     

Modifications du nombre d'unités formatrices de colonies spléniques par des bactéries induisant i'immunostimulation non spécifique

Zusammenfassung Das Verhalten hämopoietischer Stammzellen in Knochenmatk, Milz und peripherem Blut der Maus nach Injektion vonBrucella abortus, Corynebacterium granulosum oderBacillus-Calmette-Guérin wird beschrieben.     

Changes in plasma levels of metabolites during long-term fasting in the goose]

In fed geese, plasma levels of glucose and alanine were 1.9 g.l-1 and 560 mumol.l-1, respectively. During a long fast (40 days), plasma glucose and alanine were maintained at a high level (1.5-1.8 g.l-1 and 370-540 mumol.l-1, respectively). Plasma level of acetoacetate was very low (40 mumol.l-1); by contrast, plasma level of beta hydroxybutyrate reached very high values (20 mmol.l-1) after about 20 days of fasting, then it decreased. Plasma levels of lactate and pyruvate decreased along the course of the fast, from 2 500 to 2 000 mumol.l-1 and 220 to 170 mumol.l-1, respectively.     

Placing the activity rhythm in Araneus cornutus]

Araneus cornutus spiderling activities recorded from hatching to scattering show a particular distribution of the general motor activity over a 24-hour period. More motor activity is first observed during the light sequence, while at a nocturnal activity distribution appears after the 2nd nymphean ecdysis.     

Experimental study in rats to reduce carbon monoxide in the blood induced by cigarette smoke, by inhaling oxygen at atmospheric pressure]

When animals are exposed to cigarette smoke, the concentration of carbon monoxide in blood is rapidly increased, so that intensive inhalation tests cannot be carried out. A simple apparatus is described to expose Rats alternatively to cigarette smoke and to oxygen in order to reduce the concentration of carbon monoxide in the blood. This method makes it possible to increase the daily administration of smoke considerably; nevertheless, under such conditions, lung tumors were not observed.     

人口经济区域规划中的资源和经济发展分析模型

本文提出了人口经济区域规划中的资源和经济发展分析模型.此模型由两个模型组成,第一个是采用AHP 决策方法的区域发展战略决策模型,第二个是在第一个模型基础上,引入可能度、满意度概念的经济发展平衡优化模型.通过这两个模型的计算,农业可以为地区未来人口、经济规划提供资源经济分析基础.本文最后给出了勉县,发展分析的实例.     

Decrease in [3H]ouabain binding sites in heart and brain from spontaneously hypertensive rats

Summary A decrease in the number of binding sites (B_max) for [³H]ouabain was observed in the heart (37%) and the brain (22%) of spontaneously hypertensive rats (SHR) when compared with age-matched control Wistar Kyoto rats. No variation was detected in the affinity constant (K_D).