行走在物业职场中的女人们

如花一样的娇容,如水一样的柔情. 爱烹调美味佳肴,也爱在职场上纵横驰骋;喜欢逛街,也喜欢游走于社区的阡陌小径;爱照顾家人,享受和孩子在一起的时刻,乐于享受天伦之乐,也心装公司员工、心怀社区业主,时刻为小区大事小情挂念     

Tracking the gatekeeper gene in the stages of carcinogenesis in the bladder

From Dragon's Blood, a resin produced by plants of the genus Daemonorops (Palmae), six new A-type flavanoid deoxyproanthocyanidins have been isolated. Their structure and stereochemistry, established by chemical degradation and extensive NMR analysis, is consistent with a mechanism of formation common to other constituents of the resin, which involves oxidation of a 6-methylflavan to a quinonemethide, followed by coupling with another flavan moiety.     

清代岭南与岭外词人交流考论

清代岭南词人与岭外有着不断的词学交流,这对岭南词有积极的影响。首先,词学交流促进了清代岭南词人的成长与岭南词的发展。另外,这种交流有助于清岭南词人与岭南词地位的提升。再者,词学交流还对岭南词风的嬗变有重大的影响。     

Changes in the ultra-fine structure of capillaries of the embryonic brain in the presence of schizophrenia in the mother

The report is concerned with a study of fine structures of brain capillaries in 9 embryos received during medical abortions from schizophrenic mothers. The authors established some traits in the ultrastructure of endothelial cells in most of the studied cases--an increase of the surface of endothelial cells at the expense of a tortuosity of their plasmatic membranes and a formation of growths, vacuolization of the cytoplasma. There were also some changes in the structure of basal membranes. In 2 cases there were also peculiar pathological changes in the vascular endothelium: granules of an unknown nature in the endothelial cells and a focal lysis of the plasmatic membranes of endothelial cells.     

Errors in the surgery of the testicle in children

The study was made of labyrinthine changes induced by lasix dehydration. Changes indicative of Meniere's disease were identified at comparison of the findings obtained by audiological lasix test, caloric optokinetic reactions. Four types of the nystagmic response in the bithermal lasix-test were determined. These reactions are helpful for more precise staging of the disease.     

不同除草剂在直播冬油菜田的除草效果研究

[目的]验证不同除草剂的除草效果,为直播冬油菜田的杂草防除提供借鉴.[方法]使用不同剂量25%胺苯磺隆可湿性粉剂和10.8%高效氟吡甲禾灵乳油在直播冬油菜田间进行单用和混用除草试验.[结果] 25%胺苯磺隆可湿性粉剂在冬油菜4～5叶期使用可以有效防除田间的阔叶杂草;25% 胺苯磺隆可湿性粉剂18.0～22.5 g/hm<'2>+400 ml/hm<'2>的10.8%高效氟吡甲采灵乳油可以有效防除油菜田间的阔叶和禾本科杂草,总防效达90%以上,且可以比人工除草节省成本1 100元、hm<'2>.[结论] 25%胺苯磺隆与10.8%高效氟吡甲未灵乳油混用可以更好地防除冬油菜田间杂草.     

Change in peroxidation and in the phospholipid content in the brain in hyperoxia and the protective action of urea

The rate of lipid peroxidation (by content of the lipid peroxide transformation end product--malonic dialdehyde) in homogenates of rat brain was studied as affected by hyperoxia and with a protective effect of urea in experiments in vivo and in vitro. In both cases an increase is observed in the malonic aldehyde yield with the effect of oxygen under higher pressure. Urea in physiological concentrations lowers the yield under the effect of hyperoxia in vitro. In experiments in vivo introduction of urea also evokes a decrease in the rate of peroxidation. It is established that hyperoxia and urea affect mainly the ascorbate-dependent system of peroxidation. The compositon of phospholipids in the rat brain was studied under the effect of hyperoxia and urea. No changes were found in the number of fractions under the effect of 6at oxygen, only quantitative changes are observed. With introduction of urea before hyperoxia there occurs a normalization in the phospholipid composition. The authors suppose the protective effect of urea to be due to its influence on membranes.     

Spiral structures in the wall of the hepatic venous system in the dog

Unique spiral structures, located in the wall of the hepatic venous system in the dog, were examined in the central veins and the hepatic venous branches, utilizing microvascular corrosion casting and freeze-fracture technique in scanning electron microscopy and transmission electron microscopy of tissue sections. The whole hepatic venous system was divided into 4 portions: the central, sublobular, collecting and branches of the hepatic veins. The central vein was spindle-shaped with several compressions. Removing the endothelial cells of the central vein, pathways of venous sinusoids were like a labyrinth. In the sublobular veins, spiral structures distinctly appeared as the diameter increased. Beneath the endothelial cells in the constricted portions, smooth muscle bundles were found. The spiral structures gradually became irregular in the collecting veins and discontinuous to form shallow constrictions in cast thicker branches of the intrahepatic veins. A single, fine spindle of the central vein was formed by the arrangement of liver cells. The spiral structures of the sublobular vein were formed by smooth muscle bundles. Irregularity of the spiral structures in the collecting veins was caused by smooth muscle bundles anastomosing with adjacent ones. Disappearance of the spiral structure in cast thicker branches of the intrahepatic veins was due to absence of muscle bundles.     

Postmaturity in the rat: glucose metabolism in the fetus and the neonate

The present study was designed to investigate glucose metabolism in the postmature fetus and newborn. In the fetus, the decreased hepatic glycogen content together with the decrease by the same percentage of total hepatic glycogen radioactivity from directly injected [6-3H]glucose demonstrate that fetal glycogenolysis occurs during prolonged gestation. Moreover, fetal glycogen synthesis as tested by in vivo [6-3H]glucose incorporation experiments is inhibited. In vivo experiments with [14C]lactate are consistent with gluconeogenesis, being inactive in the postmature fetus as well as in the normal-term fetus. During the first hr after delivery, our in vivo data about conversion of [14C]lactate to glucose show that the gluconeogenic pathway is not functioning in spite of very high phosphoenolpyruvate carboxykinase activity in the postmature. By 3 hr postpartum, the phosphoenolpyruvate carboxykinase activity, the blood lactate level, the percentage of conversion, and the rate of gluconeogenesis are very elevated in the postmatures as compared to the term neonates. By 6 hr postpartum, despite maintained phosphoenolpyruvate carboxykinase activity, gluconeogenic rate becomes very weak in postmatures kept fasting. This is the time characterized by a profound hypoglycemia. In contrast, fed postmature neonates exhibit normal blood glucose levels by 6 and 12 hr postpartum as a result of sustained rate of gluconeogenesis.     

Variations in the relationship of the major vessels of the left coronary groove in the dog

The anatomic relationship of the 2 major vessels of the left coronary groove was studied in 140 dogs. Five basic patterns of disposition were observed: 1) circumflex artery superficial from its origin to the caudodorsal cardiac margin, coronary vein deep and not visible (22%); 2) coronary vein superficial from the ventral interventricular septum to the caudodorsal cardiac margin, circumflex artery deep and not visible (15%); 3) circumflex artery and coronary vein both superficial and running parallel with each other along the groove (8%); 4) coronary vein crossing circumflex artery at some point along the groove (44%); and 5) circumflex artery crossing coronary vein at some point along the groove (11%). These variations were found to influence certain experimental modifications of the left circumflex blood flow in the dog.     

Fighting the odds in the UK

Caroline Richmond reports on miscellaneous winners and losers from the health care scene in the United Kingdom. The winners include a young patient who is holding her own against formidable medical odds after receiving heroic treatment for leukemia, and the country's osteopaths, who have won the right to compile a statutory register. The losers are the venerable St. Bartholomew's Hospital, which appears to have lost its battle to stay open, and a 32-year-old man who almost made it to medical school by posing as a teenager.