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고석태,윤재경,유강준 朝鮮大學校 1997 藥學硏究誌 Vol.18 No.2
Vasopression which is antidiuretic hormone in human body produced the diuretic action in dog. This atudy was investigated in order to certify the diuretic action and to search out the mechanism of the action on the vasopression. Vasopressin, when given in a dose of 10.0mU/㎏, bolus+1.0mU/㎏/min intravenously, exhibited the increase of urine flow(Vol), renal plasma flow(RPF), osmolar clearance(Cosm) and amounts of sodium and potassium excreated in urine(E_Na, E_K), the decrease of reabosorption rate of sodium and potassium in renal tubules(R_Na, R_K), and then elevated the mean arterial pressure(MAP). Vasopressin given in a increased dose to 30.0 mU/㎏,bolus+1.0mU/㎏/min intravenously elicited the same aspect with that exhibited by a small dose in changes of Vol. and all reansl fuction and potentiated the change rates, whereas this time MAP did not change at all when compared with control value. Vasopressin, when adminstered into a renal artery, but increased slightly the Vol, glomeruler filtration rate(GFR). E_Na and E_K excepted the no change of R_Na and R_K in the control (not administered)kidney. Vasopressin. when infused into carotid artery, showed the increase of Vol. GFR,E_Na, E_K and no change of R_Na and R_K in a dose of 1/5 of intravenouse dose. Diuretic action of vasopressin administewred into carotid artery was not influenced by renal denervation. Above results suggest that vasopressin produces diuretic action by hemodynamic changes in dog. These hemodynamic changes may be mediated by central endogenous substances not associated with renal nerve.
Suk Young Yun,Yu Jung Nam,Yong Il Kwon,Byung Jin Choi 인간식물환경학회 2020 인간식물환경학회지 Vol.23 No.3
Background and objective: The concept of ‘money’ in the numbers and operations domain is a fundamentally necessary domain of economic life. This study was conducted to examine the effects of a horticulture-mathematics integration program on mathematical attitude and money calculating ability of high school students with intellectual disabilities. Methods: We analyzed the changes in the mathematical attitude and money calculating ability of students with mild intellectual disabilities in S special school in the city of D, Republic of Korea, with 12 students in the control group and 12 students in the experimental group, from August 27 to October 29, 2019. Results: The results of the comparison showed no statistically significant changes in the three items of mathematical attitude for the control group, while the experimental group, which took part in the horticulture-mathematics integration program, showed statistically significant differences across all three items, such as self-concept about the subject (p = .003), attitude toward the subject (p = .004), and study habit related to the subject (p = .012). The horticulture-mathematics integration program, which was developed by integrating horticultural activities and the mathematics curriculum, used plants and horticultural activities to provide students with positive experiences in mathematics. These included the sense of closeness, curiosity, interest, attention, and enjoyment, leading to positive changes in mathematical attitude. In terms of money calculating ability, both the control group and experimental group showed statistical differences across the three items, but the experimental group showed greater degrees of increase, 15.0 or more, in the scores compared to the control group. Conclusion: These results suggest that utilizing horticultural materials as a part of purchase learning programs with elements of money calculation chapters in the mathematics curriculum could lead to the improvement of students’ ability in money calculation. These positive changes are thought to be related to the high degrees of interest in horticulture among students, which led to active participation in the program and enabled the simple and repeated purchase activities in the program to generate positive changes in the money calculation ability of the students.