首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.
MSMSNET a "hit"     
The results of treatment of 47 patients with an acute pancreatitis including 40 with necrotic pancreatitis are adduced. Of 34 (72.3%) patients operated there were 4 with pancreatic gland oedema. Laparoscopic intervention in 24-48 hours after the illness beginning was conducted in 21 (44.7%) patients, in concomitance with peritoneal dialysis--in 11, laparoscopic cholecystectomy--in 6. In 20 patients the abortive course of necrotic pancreatitis and the laparotomy conduction avoidance were achieved. Postoperative lethality was 8.8%.  相似文献   

2.
3.
4.
谈“说课”     
就说课表述的内容及其优点与缺点进行了探讨。  相似文献   

5.
Comments on the article by J. T. Todd and E. K. Morris (see record 1993-11918-001) on mythology and folklore in behavior analysis. Discussion focuses on how, in the past, many of the proponents of behavior analysis failed to recognize the significance of species behavioral differences. Research is detailed that shows how the position has gradually changed over the years. The vast majority of behavior analysts now accept the idea for instinctive behavior, although by perhaps another name. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   

6.
A gas-liquid chromatographic method for the estimation of 2-phenylethylamine in rat brain tissue is described. The procedure involves initial separation of the amine from homogenates with ion-exchange chromatography, subsequent acetylation of the eluate and extraction of the N-acetylated amine with ethyl acetate. The N-acetyl-2-phenylethylamine derivative is then converted to the pentafluoropropionyl derivative and quantitated with electron capture detection. Difficulties involved with alternative separative procedures and derivative formation are discussed.  相似文献   

7.
Ionization chambers are frequently moved from one environment to another, sometimes with significant differences in temperature between the chamber and measurement phantom. To obtain reliable ionization data, the temperature of the air in the chamber must be allowed to equilibrate with the measuring phantom. The air temperature inside a thimble of a Farmer-type ion chamber was measured as a function of time for various phantom materials (air, water, and plastic). Equilibration rates for the various conditions are presented. Heat-diffusion theory is presented to explain the characteristics of the measured data. Waiting times for temperature equilibration down to 10% of the initial temperature difference ranges from 1 to 18 min, depending on the phantom material and use of bare or covered thimble. Radiation measurements confirm the temperature data.  相似文献   

8.
9.
After seeing multiple providers for various complaints, a patient becomes frustrated with the healthcare system. She is diagnosed with acromegaly secondary to pituitary tumor when she transfers to another healthcare system.  相似文献   

10.
11.
The significance of the conscious ego in the interpretive process has increasingly come under scrutiny. It is becoming clearer that the analyst's view of the conscious ego orients his interpretive approach, and subtly sets the goals of the analysis. At various times Freud championed the analytic importance of the conscious ego, and alternately rejected its significance. Hartmann's view of the ego stimulated research into a developmental line of the ego, while investigations of the ego in clinical psychoanalysis lagged far behind. The importance of the conscious ego in understanding resistances and levels of communication are explored.  相似文献   

12.
13.
14.
吴荪甫是茅盾在<子夜>里塑造的一个民族资产阶级经典形象.这个人物有振兴民族工业的强大愿望,有科学经营管理现代企业的主体素质.但在当时的政治经济环境下,他的理想注定失败,他无法抗拒历史的必然法则为他安排的悲剧命运.他的爱国心与反动性均以其个人理想为中心点.  相似文献   

15.
Macrodistrophia Lipomatosa is a congenital malformation of rare finding and unknown pathogenic mechanism. The pathology is mainly characterized by the interest of lower extremities and peculiar macroscopic feature is the presence of hyperthrophic fibro-adipose tissue. In our experience the localization to the upper extremities and the presence of uncommon clinical signs show the importance of instrumental investigation: MRI and CT for an accurate examination and to exclude other types of localized gygantism.  相似文献   

16.
17.
18.
The objectives of the present study were to optimize the protocol of mouse immunization with Paracoccidioides brasiliensis antigens (Rifkind's protocol) and to test the modulation effect of cyclophosphamide (Cy) on the delayed hypersensitivity response (DHR) of immunized animals. Experiments were carried out using one to four immunizing doses of either crude particulate P. brasiliensis antigen or yeast-cell antigen, followed by DHR test four or seven days after the last immunizing dose. The data demonstrated that an immunizing dose already elicited response; higher DHR indices were obtained with two or three immunizing doses; there were no differences between DHR indices of animals challenged four or seven days after the last dose. Overall the inoculation of two or three doses of the yeast-cell antigen, which is easier to prepare, and DHR test at day 4 simplify the original Rifkind's immunization protocol and shorten the duration of the experiments. The modulation effect of Cy on DHR was assayed with administration of 2.5, 20 and 100 mg/kg weight at seven day intervals starting from day 4 prior to the first immunizing dose. Only the treatment with 2.5 mg Cy increased the DHR indices. Treatment with 100 mg Cy inhibited the DHR, whereas 20 mg Cy did not affect the DHR indices. Results suggest an immunostimulating effect of low dose of Cy on the DHR of mice immunized with P. brasiliensis antigens.  相似文献   

19.
Bassett and Howley contend that the 1996 J. B. Wolffe lecture is erroneous because: 1) A. V. Hill did establish the existence of the "plateau phenomenon," 2) the maximum oxygen consumption (VO2max) is limited by the development of anaerobiosis in the active muscle, and 3) endurance performance is also determined by skeletal muscle anaerobiosis because the VO2max is the best predictor of athletic ability. As a result, 4) cardiovascular and not skeletal muscle factors determine endurance performance. They further contend that Hill's "scientific hunches were correct," requiring "only relatively minor refinements" in the past 70 yr. But the evidence presented in this rebuttal shows that Hill neither sought nor believed in either the "plateau phenomenon" or the concept of the individual maximum oxygen consumption. These twin concepts were created by Taylor et al. (97) in 1955 and erroneously attributed to Hill. Rather Hill believed that there was a universal human VO2max of 4 L x min(-1). His error resulted from his incorrect belief that the real VO2 unmeasurable because it includes a large "anaerobic component," rose exponentially at running speeds greater than 13.2 km x h(-1). But Hill and his colleagues were indeed the first to realize the danger that a plateau in cardiac output (CO) and hence in VO2 would pose for the heart itself. For unlike skeletal muscle, the pumping capacity of the heart is both dependent on, but also the determinant of, its own blood supply. Thus, if the CO reaches a peak causing the "plateau phenomenon," the immediate cause of that peak will have been a plateau in myocardial oxygen delivery, causing a developing myocardial ischemia. The ischemia must worsen as exercise continues beyond the supposed VO2 "plateau." To accommodate this dilemma, Hill and his colleagues proposed a governor "either in the heart muscle or in the nervous system" necessary to prevent myocardial ischemia developing during maximal exercise. This governor would cause maximal exercise to terminate before the development of a plateau in either coronary flow, CO, or VO2, or the onset of skeletal muscle anaerobiosis. Accordingly, a new physiological model is proposed in which skeletal muscle recruitment is regulated by a central "governor" specifically to prevent the development of a progressive myocardial ischemia that would precede the development of skeletal muscle anaerobiosis during maximum exercise. As a result cardiovascular function "limits" maximum exercise capacity, probably as a result of a limiting myocardial oxygen delivery. The model is compatible with all the published findings of cardiovascular function during exercise in hypobaric hypoxia, in which there is a greater likelihood that myocardial hypoxia will develop.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号