The Influence of Stasis and Acidity of the Antrum on the Acid Secret ion in Denervated Fundic Pouch and Antral Pouch Dogs .

In mongrel dogs with denervated total gastric pouch devided in two parts by a mucosal septum constructed at the junction of antral and fundic mucosa, the effect on acid output from fundic pouch in response to acidity and stasis of antral pouch perfusing with prepared stimulant solution of various pH was observed. The stimulant solution was prepared with O. 1% acetylcholine in saline. The pH of the solution was varied between 1. 0 and 8.0, using the stimulant mixture added with HCI or NaOH. When the stimulant solution of various pH was introduced into antral pouch for 3hr, 5hr, and 15hr period, the acid output from the fundic pouch was collected for 10hr or 15hr secretion , divided in 2 or 3 fractions of 5hr interval. By comparison of acid output (mEq) introduced each stimulant of various pH into antral pouch, optimal condition of pH was determined for release of gastrin from antrum. When the antral stasis was induced by the various pH solutions introduced into antral pouch for 5hrs or 15hrs, the amount(mEq) of acid output for 15hr period was compared in each case. Furthermore, in order to observe the phasic susceptibility of antral mucosa to various solutions, acid secretion for every 5hr interval was studied comparatively in case of the antral stasis for 15hrs. The results are as follows: 1. The antral phase of gastric secretion is most active at a pH of 6 and the optimal range of pH was 5 to 7. 2. The antral stasis with stimulant solution above level of pH 3 resulted in continuous secretion of acid. But the susceptibility of antral mucosa in response to each pH solution was almost constant in any fraction of 5hr intervals. 3. Acidification of the antrum below pH of 2 showed an inhibition of gastric acid secretion at the level of fasting

Joint stiffness controlling method for beam topology optimization with assembly consideration

학위논문(석사)--서울대학교 대학원 :기계항공공학부,2005.Maste

Clinical Observation on Total and Subtotal Thyroidectomy for Thyroid cancer Patients

We got following results by analyzing 36 cases of subtotal thyroidectomies and 26 cases of total thyroidectomies for thyroid cancers which were operated at the Department of General Surgery in Seoul National University Hospital for recent 2 years. 1. The frequency of In\llticentricity was 16% (in 8 of 51 cases) papillary ca., however, there was no case of multicentricity in follicular ca. (of 6 cases) and medullary ca. (of 1 case). But we can not conelude because of scanty samples in this case. 2. There was little difference in the frequency of postoperative hoarseness due to injury of recurrent laryngeal nerves between subtotal and total thyroid" ectomy (each 3% and 4%). 3. The frequency of permanent hypocalcemia due to injury of parathyroid glands was higher in total thyroidectomies than in subtotal thyroidectomies(each 996 and 0%). 4. A group which had reoperation because of recurrence after the first minor procedure has higher incidence of permanent hoarseness and hypocalcemia than a group which had thyroidectomy once (hoarse ness: each 4% and 22%; hypocalcemia: each 4% and 22%). Most of thyroid cancers were papillary ca. (80%), and multicentricity of it was high. The incidence of postoperative complications of reoperation because of recurrence after minor procedure (simple lobectomy) was higher than that of the first operation. This result suggests that more extensive procedures(subtotal or total thyroidectomy) are more desirable than the minor procedures in the treatment of thyroid cancer. We are going to support this conclusion by longterm comparative follow-up studies of recurrence rates and survival rates between minor procedure group and more extensive procedure- group

Prevalence of Gait Features in Healthy Adolescents and Adults

Forensic gait analysis is the identification of individuals by their gait style and walking characteristics. This study aimed to examine the prevalence of gait patterns in healthy adolescents and adults. Five hundred healthy participants (mean age, 36.9 years) were enrolled and divided into four age groups: 13-20, 21-35, 36-50, and ≥51 years. The gait of the participants was recorded in a gait analysis laboratory. Five specialists experienced in gait analysis selected several gait features. The prevalence of out-toe, in-toe, planovalgus, and turtleneck was 25.0%, 1.6%, 6.8%, and 4.2%, respectively. The prevalence of genu varum (10.4%) was higher than that of genu valgum (5.6%). Genu valgum and hindfoot valgus were more common in younger than in older subjects (P=0.018 and P=0.029, respectively). Genu varum was more prevalent in older subjects (P<0.001). The prevalence of out-toe was higher in males (P<0.001), whereas the in-toe and genu valgum were more common in females than in males (P=0.027 and P=0.038, respectively). We have documented the prevalence of several gait features in healthy adolescents and adults. These gait features can be used to enhance evidentiary competence in forensic gait analysis and thereby help improve the arrest rate of offenders.N