中国猪屎豆属的分类问题

猪屎豆属(野百合属)根据A.Engler的分类属豆科(Legumino-sae)蝶形花亚科(Subfam.Papilionoideae)染料木族(Trib.Genisteae)猪屎豆亚族(Subtrib.Crotalarinae)的成员。本属与该族的黄雀儿属(Priotropis)、罗顿豆属(Lotononis)近缘(详见下),建于1753年,其命名模式为Crotalaria lotifolia Linn.)。     

ON THE SITE OF SULFATION IN THE CHONDROCYTE

As observed autoradiographically in the cartilage of embryonic rats, radiosulfate is bound and concentrated only in vesicles of the juxtanuclear Golgi apparatus of secreting chondrocytes within 3 minutes of its presentation. From this area, vacuoles migrate peripherally and lodge in the subcortex; their sulfated contents are thence discharged via stomata to the extracellular matrix. The label, apparently often associated with microvesicles at 10 and 20 minutes, is subsequently localized in the dense contents of the larger vacuoles. Bound radiosulfate is not detectable in other organelles. It is concluded that the vesicular component of the Golgi apparatus is the actual site of sulfation. Intracellular hyaluronidase-sensitive metachromatic granules are found chiefly at the cell periphery or mantle, rarely juxtanuclear in the main Golgi zone.     

杨氏鱼(Youngolepis)吻部网状骨质管的研究

本文描述了我国云南曲靖早泥盆世总鳍鱼——杨氏鱼(Youngolepis sp.)吻部网状骨质小管管壁电镜结构、元素成分、整个系统的分支状况以及它与膜质骨、侧线系统的关系,推测其功能是为吻部神经和血管提供通道.文中认为杨氏鱼与肺鱼共同具有 rostral tubuli 这一特征;将杨氏鱼吻部神经分支与骨鳞鱼、孔鳞鱼、肺鱼及两栖类进行了比较,指出杨氏鱼的眼浅支分支进入鼻囊这一特点.     

穗醛栗叶片中黄酮类物质的研究

本试验以小浆果类果树穗醋栗（黑、红、白）的叶片为试材,利用分光光度法。测定了三种穗醋栗叶（鲜样、干样）中总黄酮的含量及不同提取次数下总黄酮的浸提率,确定了最佳提取次数。结果表明：白穗醋栗叶片中总黄酮含量最高,鲜样785．10mg/100g,干样189.01mg/100g;红穗醋栗叶片次之,鲜样393.22mg／100g,干样1597.73mg／100g;黑穗醋栗叶片中总黄酮含量相对较少,鲜样151.59mg/100g,干样265.03mg/100g。三种穗醋栗叶片浸提三次,总黄酮的浸提率可达到97％以上。此外,利用定性试验（颜色反应）并和标准品芦丁的试验做比较,初步确定三种穗醋栗叶片所含的黄酮类化合物主要是黄酮和黄酮醇两类。     

呼吸对心电图中QRS波形的影响

通过对20例健康男性Frank导联心电图在不同呼吸阶段的QRS波波形平均和振幅统计,观察到处于不同呼吸阶段的QRS波的振幅有差别。其中QRS波振幅在呼气中期最高在呼气中期最低,根据呼吸运动时肺容积及肺内压变化的规律,认为是由于胸腔压力和心室舒容积的改变,而不是心脏与电极间的相对位置的改变造成了QRS波振幅的变化。     

NOTE ON THE NATURE OF THE CURRENT OF INJURY IN TISSUES

Leading off from two places on the same cell (of Nitella) with 0.001 M KCl we observe that a cut produces only a temporary negative current of injury. If we lead off with 0.001 M KCl from any cell to a neighboring cell we find that when sap comes out from the cut cell and reaches the neighboring intact cell a lasting negative "current of injury" is produced. This depends on the fact that the intact cell is in contact with sap at one point and with 0.001 M KCl at the other (this applies also to tissues composed of small cells). If we employ 0.1 M KCl in place of 0.001 M the current of injury with a single cell is positive (and is more lasting when a neighboring cell is present). Divergent results obtained with tissues and single cells may be due in part to these factors.