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항고혈압제 처치유무에 따른 고혈압환자 마취관리시 혈압 및 맥박수의 변화
박승우,김병권,백운이,박진웅,홍정길 대한마취과학회 1990 Korean Journal of Anesthesiology Vol.23 No.3
It has been reported that the number of patients with hypertension increases yearly, and this imposes many anesthetic problems during surgery. The etiology of essential hypertension is unknown, but it affects primarily the brain, heart and kidney. The main causes of mortality due to hypertension are cerebrovascular accident, congestive heart failure, myocardial infarction and uremia. For the better anesthetic management of patients wuth hypertension, it is essential to clearly understand the pathophysiologic changes and hemodynamic patterns of hypertension. Because of the controversy regarding the appropriateness of preoperative treatment of hypertension, this article will evaluate the effect of preoperative antihypertensive medication on blood pressure during anesthesia of hypertensive patients. Patients with hypertension were divided into two groups, one group consisting of ll patients, who received antihypertensive medication in the preoperative period, and the other group, consisting of 11 patients, who did not received antihypertensive medication for the control of high blood pressure preoperatively. Changes of arterial blood pressure during anesthesia were analyzed, and data were compared between the two groups. The results were as follows: The patient who receivecd antihypertensisve medication for preoperative anesthetic management showed the same arterial blood pressure fluctuation during general anesthesia, as the patients who had not received antihypertensive medication (p $lt; 0. 05). In the treated group, the blood pressure and heart rate changes during preinduction and intubation showed significant increase compared to the ward's values, but did not show a significant increase during operation annd recovery. In the nontreated group, the results showed similar changes with the treated group. It may be suggested from the above observation that the preoperative control of hypertension dose not affect the changes of blood pressure in the perioperative period.
박승우 한국농공학회 1986 한국농공학회논문집 Vol.28 No.1
This paper attempts to qualitatively characterize scour erosion processes near USGS constriction type-I structures with vertical embankments and abutments. The scour dimensions and rates of sand beds around the structure models were measured in a rectangular flume. The test results showed that scour took place at a rapid rate at initial stages, which were followed by a stage of slow and general scour with greater extends. The maximum scour depth was observed near upstream corner of embankments. Empirical relationships for scour dimensions were derived, that were based on the results from a dimensional analysis of scour processes.
小流域 水文模型의 開發과 應小流域 水文模型의 開發과 應用(I) -模型의 構成-
박승우,Park, Seung-Woo 한국농공학회 1984 한국농공학회논문집 Vol.26 No.2
A physically-based, distributed, parametric hydrologic model PARK 10 is described and its test results with three agricultural watersheds are presented. The model uses a rectangular grid system to depict hydrologic characteristics of a watershed, and thus, has potentials of identifying the effects of changes in land uses and/or other activities. The model is being tested with small watersheds in the pennisula.
박승우,정하우 한국농공학회 1974 한국농공학회논문집 Vol.16 No.2
This study was performed to estimate the daily water consumption for watering livestock and home use, and to organize the water systems in the rural districts of Korea. For these purposes, 560 farms and other 40 urban families were randomly chosen and investigated about their water systems and daily water consumption seasonally from July 20 to August 31, 1973, and other 82 livestock raisers' useful data for watering livestock helped the study to assess the consumption of livestock water and compare it to that of general farms which bred some domestic animals as their sidelines. The results of data showed that the daily consumption of water was varied with the difference of districts and seasons in which the investigations were conducted. The results were summarized as follows. 1. The mean consumption of water for home use was varied with the range of 30.2-48.7 lit./day in summer and 22.4-45.2 lit./day per a person, respectively, in the rural districts, which showed that the water consumption in summer was more than in autumn. 2. The mean consumption of livestock water in the general farms approached to about 15.8-37.1 lit./day per cattle, 3.87-16.45 lit./day per a pig, and 0.19-1.03 lit./day per chicken, but it was slightly reduced in autumn; 10.89-37.09 lit./day per cattle, 3.87-12.63 lit./day per a pig, and 0.06-0.94 lit./day per chicken. The ratio of livestock water consumption to home use amounted to the range of 10-25%. 3. The mean consumption of livestock water used at the livestock raisers amounted to 134 lit./day per dairy cow, 67.4 lit./day per cattle, 43.29 lit./day per a horse, 13.24 lit./day per a pig, 0.438 lit./day per a layer, and 0.177 lit./day per a broiler, which showed that the daily water consumption for larger livestock was about two times as much as the farms, but it was approximately of the same for small ones. 4. The factors affecting the amount of water consumption for home use were statistically analyzed to find the kind of water sources and the class of water systems by the factorial arrangement method to the fundamental experimental unit, Suwon area of 100 of families, in which the former was very significant while the latter was significant. However, the standard of living and their interactions were not significant. 5. Almost 83.24% of the sampled farms used some kinds of wells as their water sources, of which 32.06% was of hard water, and of which 11.l% or 2.6% contained much of iron or organice materials, respectively, examining them by a simple technique of sensibility, 6. The resulting chart of the farm water systems was summarized as Fig. IV-6. Observating the safe distance from contamination sources, the ratio of 42.4% of sampled farms whose water sources were wells, confronted highly to the danger of contamination to their water sources. And other dangerous sources of contamination such as toilets, stalls, and compost heaps were situated nearly to the water sources, and most of them were able to make their spoiled water infiltrated into the ground. Thereafter, it was recommended to develop some protecting methods and to install some suitable faculties to clean water.