黄嘴白鹭的繁殖生物学

黄嘴白鹭的繁殖生物学ＴＨＥＢＲＥＥＤＩＮＧＢＩＯＬＯＧＹＯＦＴＨＥＣＨＩＮＥＳＥＥＧＲＥＴ关键词黄嘴白鹭繁殖生长率恒温能力发育食物组成ＫｅｙｗｏｒｄｓＣｈｉｎｅｓｅｅｇｒｅｔ,Ｂｒｅｅｄｉｎｇ,Ｇｒｏｗｔｈｒａｔｅ,Ｄｅｖｅｌｏｐｍｅｎｔｏｆｈｏｍｅ...     

防治前与防治后赤松毛虫幼虫空间分布型及抽样技术研究

防治前与防治后赤梧毛虫幼虫在松林的空间分布型均为聚集分布。用Iwao方法给出了防治前与防治后的理论抽样数。进行了防治前与防治后的序贯抽样分析。     

诱发肝癌过程中脂类和磷脂酶动态变化的相关性

研究了二乙基亚硝胺诱发大鼠肝癌过程１,２－甘油二酯（ＤＡＧ）,磷脂和磷脂酶的动态变化及其相互关系,高效薄层层析发现肝中ＤＡＧ在第８周出现第一高峰,以后维持高于正常的水平,１４周进一步增高,但以后下降,磷脂组分测定发现只有磷脂酰胆碱（ＰＣ）和肌醇磷脂类（ＰＩｓ）在诱癌过程中降低,有可能成为ＤＡＧ的来源,但ＰＣ可能是主要的,因ＰＩｓ减少的量远小于ＤＡＧ增加的量,进一步用酶偶联比色法测定ＰＣ专一性磷脂酶     

察北春小麦的春化试验

塞外草原区域,是个气候干旱、植物生长期短、农作物收量下稳定的地带(前察哈尔省察北地区).我们在前察北农场时期,为了稳定这个地区的农作物收量,除研究其耕作法外,在1952年特作了230.4平方米的春小麦春化处理实验,今将其试验的结果报告出来,以供实践生产的参考.     

Activation of Na+ /H+ exchange on rat preadipocyte plasma membrane and its role in cell proliferation and differentiation

An in vitro cultured rat perirenal preadipocyte (PA) was established as a model system to investigate the role of the intracellular pH (pHi) and of the Na~ /H~ exchanger during PA proliferation and differentiation, pH sensitive probe, 2' ,7'-bis-(2-carboxyethyl)-5(6)-carboxyfluorescein(BCECF), was employed to measure the pHi of PA and to determine the Na~ /H~ exchange activity. The results showed that there was Na~ /H~ exchange activity in the plasma membrane of PA, FCS stimulated DNA synthesis measured by ~3H-TdR incorporation, and the activation of Na~ /H~ exchanger resulted in phi increase (nearly 0.2 pH unit) within 2 min. Ethyl-isopropyl-amiloride (EIPA), a specific Na~ /H~ exchange inhibitor, inhibited Na~ /H~ exchange activity and DNA synthesis. In the absence of serum insulin did not stimulate DNA synthesis but did induce PA differentiation characterized by the appearance of adiposome in the cell and the enhancement of glycerol-3-phosphate dehydrogenase (G_3PDHase) activity. Meantime, insu     

观察导管和筛管的两种简便方法

采用将徒手切片煮沸透明的方法改进了两种观察导管和筛管的方法。     

保山地区碱性温泉中的高温菌

保山地区位于云南省西部,是全省温泉分布比较密集的地区之一。温泉作为地热资源已引起有关部门的重视,70年代已进行了地热资源的调查和开发利用研究。但是对于温泉中潜在的高温菌资源,尚未进行过系统考察、研究。现将我们对于保山地区pH8.0以上的高温温泉中的高温菌研究结果报告于后。