전류 비유 모델에 의한 초등학생의 전류 개념 변화 분석

유병길,강인석,김병철,남만희,박선희,소하연,윤희정,이영아,이하룡,전병문,정승호 부산교육대학교 과학교육연구소 2000 科學敎育硏究 Vol.25 No.-

There exists a major impediment to learning electricity which may illuminate why direct presentation of scientists' ideas is too aggressive a strategy. This impediment lies in thinking that electricity is used up and in envisaging the light bulb as a consumer. This view is based on a powerful idea which summarises much of our experience; it declares that 'things get used up', 'you cannot get something for nothing', and 'intuitive thinking'. To replace this view with scientific view, we made the analogy model. It is suggested that the analogy model is more effective in teaching electricity circuits than conventional teaching method.

가덕도 주민의 의생활 실태조사

박용희,서지영,민평경,이숙희 효성여자대학교 가정대학 학도호국단 1986 家政大論集 Vol.5 No.-

The purpose of this study was to investigate on the clothing life to 109 dwellersliving in Gadukdo. The clothing life was grouped into 4 factors;purchase, wearing, management, disposal. The results were as follows ; 1. 45.9% of the dwellers appropriated less than ten thousand won for a purchaseof clothes. The purchase behavior is irrational, 76.2% of the dwellers purchasedgarments under the necessity. 2. The reason of buying and wearing a ready- made clothes is not emotional Point of view but an economical price. 3. 81.7% of the dwellers were discontented with price and durability on ready-ma-de clothes. Purchasing ready-made clothes, they didn't concerned about indication ofquality . 4. 78.9% of the dwellers occasionally wore Korean costume on a holiday. 49.5%of the dwellers answered that they took no interest in fashion. 5. A supply rate of a washing machine is 7.3%, 80.7% of the dwellers usedlaundry soap because of their low price. 6. As a reason of disposal the clothing, it was worn-out. 35.8% of the dwellers saidso. Only 10.1% of the dwellers answered that the garments were behind the fashion. That showes a tendency to be opposite with city dwellers.

백서 적혈구에서 glutathione이 paraquat 독성에 미치는 영향

김명철,박재윤,채기영,천영욱,박평심,차종희 朝鮮大學校 附設 醫學硏究所 1991 The Medical Journal of Chosun University Vol.16 No.2

The participation of superoxide in initiating tissue damage from administration of a xenobiotics is best illustrated by paraquat intoxication, in which it is known that one electron reduction of paraquat leads to the formation of radicals which react with molecular oxygen to give superoxide. In the present study, the effects of paraquat on the level of glutathione and activities of superoxide dismutase(SOD), catalase, glutathione peroxidase, glutathione reductase and glutathione stransferase were investigated in rat liver and erythrocytes. The contents of glutathione in liver and blood were sinificantly decreased by paraquat administration, but the activities of enzymes were unaltered. Incubation of the buffered aerobic mixture of erythrocyte in the presence of 5mM glucose, Paraquat and/or N-ethylmaleimide(NEM) resulted in the formation of lipid peroxide, the activities of various enzyme and the levels of glutathione were determined. The malondialdehyde(MDA) contents as a indicator of lipid peroxidation was decreased and the levels of total glutathione were not changed but the levels of oxidized glutathione(GSSG) were in creased in paraquat treated erythrocytes. The activites of ezyme were decreased in paraquat treated erythrocytes but in reduced glutathione(GSH) treated erythrocyte, the enzymes activities were less decreased by paraquat. These results suggest that paraquat toxicity was probably somewhat reduced by GSH, but paraquat-induced injury were not increased by GSH depletion in erythrocytes.

The Effects of Different Anesthetic Methods on Neuronal Activity and Movement Symptoms of Parkinson's Disease

Park, Eunkyoung,Heo, Man Seung,Lim, Yong Hoon,Jang, Dong Pyo,Kim, Hee Chan,Park, Hee Pyoung,Kim, Dong Gyu,Jeon, Beom Seok,Kim, In Young,Paek, Sun Ha Korean Society for Precision Engineering 2015 International Journal of Precision Engineering and Vol.16 No.3

Deep brain stimulation (DBS) of the subthalamic nucleus (STN) is widely used in the treatment of Parkinson's disease. DBS surgery is usually performed with the patient under local anesthesia (LA). However, a number of patients do not tolerate LA due to anxiety or severe pain. These patients require surgery under sedation or general anesthesia. Unfortunately, anesthetic drugs interfere with the intraoperative microelectrode recordings. A debate regarding the usefulness of sedation or general anesthesia during DBS surgery is still in progress. In this study, we evaluated whether the differences in anesthetic methods affect STN single-unit activity and movement symptoms of Parkinson's disease. Eight patients underwent surgery to implant bilateral STN DBS electrodes. Our study compares STN single-unit activity under both LA and monitored anesthesia care (MAC) in the same patients as well as movement symptoms of Parkinson's disease. The primary results revealed no significant difference in the mean firing rate of STN single-unit activity under LA and MAC. However, there were differences in the spike characteristics and firing patterns of STN activity between the two anesthetic methods. These findings contribute valuable insight into the effects of different anesthetic methods on STN single-unit activity for precise electrode localization during DBS surgery.

Citrus Reticulata Peel Oil의 Local lymph node assay(LLNA)를 이용한 피부감작성평가

Hee Pyoung Park,Dong Hyun Kim 한국실험동물학회 2022 한국실험동물학회 학술발표대회 논문집 Vol.2022 No.1

Comparison of the Effects of Etomidate and Propofol on Redistribution Hypothermia during General Anesthesia

( Hee Pyoung Park ),( Jong Man Kang ),( Young Tae Jeon ),( In Yong Choi ),( Yong Seok Oh ),( Jung Won Hwang ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.50 No.6

Background: Redistribution hypothermia can be modified by the effects of induction anesthesia on the systemic vascular resistance. This study compared the effects of etomidate and propofol on redistribution hypothermia during general anesthesia. Methods: Forty patients were randomly allocated into one of two groups, based on the induction agent used: Group E (n = 20) received 0.2 mg/kg of etomidate and group P (n = 20) received 2.5 mg/kg propofol. After intubation, anesthesia was maintained with sevoflurane and 50% nitrous oxide in oxygen in both groups. The core and peripheral temperatures were measured, and the peripheral temperature gradients (forearm minus fingertip) were used as an index of an arteriovenous shunt. Results: The patients in both groups demonstrated intense vasoconstriction prior to the induction of anesthesia with similar skin-temperature gradients. After induction, group P showed more rapid and significant vasodilation than group E (P = 0.02). The difference in vasodilation between the two groups disappeared from 5 minutes after intubation. The pre-induction core temperatures were similar in both groups. After induction, the core temperatures in group P were consistently lower than those in group E (P < 0.01). The core temperatures during the first hour of anesthesia decreased by 1.5 ± 0.4℃ in group P but only by 0.9 ± 0.4℃ in group E. Conclusions: Propofol caused more rapid and aggravated redistribution hypothermia during surgery than etomidate due to the earlier arteriovenous shunt vasodilation. (Korean J Anesthesiol 2006; 50: S 19~24)

임상연구 : 측와위에서 수술 전 일측폐환기가 향후 수술 중 일측폐환기 시 동맥혈 산소화에 미치는 영향

박희평 ( Hee Pyoung Park ),전영태 ( Young Tae Jeon ),박상헌 ( Sang Hyun Park ),이석면 ( Seok Myeon Rhee ),오용석 ( Yong Seok Oh ),황정원 ( Jung Won Hwang ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.5

Background: There are a few reports with conflicting results regarding the potentiation of hypoxic pulmonary vasoconstriction (HPV) by repeated hypoxic challenges. The aim of this study was to determine if preoperative one lung ventilation (OLV) in the lateral position (LP) for a short time decreases the development of arterial hypoxemia and improves the level of arterial oxygenation via the potentiation of HPV in patients undergoing thoracic surgery with OLV. Methods: Forty patients were randomly divided into two groups according to presence or absence of preoperative OLV. Preoperative OLV in LP was achieved for 10 minutes with 100% O2 in group P (n = 20). Thereafter, the two lungs were again ventilated with 50% O2 until OLV with 100% O2 had been achieved. In group C (n = 20), the two lungs were continuously ventilated with 50% O2 until OLV with 100% O2 was achieved. The arterial blood samples were obtained 15 minutes after the two lung ventilation in the supine position (baseline) during preoperative OLV in LP, before pulmonary vein ligation, as well as before and after pulmonary artery ligation. The development of arterial hypoxemia (peripheral blood oxygen saturation in pulse oximetry < 95%) in patients undergoing thoracic surgery with OLV was also recorded. Results: Arterial hypoxemia during OLV was observed in 2 cases in group C and 3 cases in group P. There was a similar level of arterial oxygen tension during OLV between the two groups. Conclusions: This study showed that the preoperative OLV in LP for 10 minutes neither potentiated the HPV response during OLV nor decreased the frequency of arterial hypoxemia during OLV. (Korean J Anesthesiol 2006; 51: 568~72)

Awareness about past diagnosis and treatment history: nationwide survey of childhood cancer survivors and their parents

Ahn, Eunmi,Park, Hyeon Jin,Baek, Hee Jo,Hwang, Pyoung Han,Lee, Young Ho,Park, Byung-Kiu,Kim, Young So,Shim, Hye-Young,Shin, Dongwook,Yang, Hyung Kook,Park, Jong Hyock,Park, Kyung Duk Foundation of Clinical Oncology 2017 Japanese journal of clinical oncology Vol.47 No.10

양파 농축액이 고지혈증 성인 남자의 체성분, 혈장 전해질 및 지질 성분에 미치는 영향

황금희 ( Kum Hee Hwang ),정난희 ( Lan Hee Jung ),조남철 ( Nam Chul Cho ),유영균 ( Young Kyun Yoo ),박평심 ( Pyoung Sim Park ),노영희 ( Young Hee Noh ),서희숙 ( Hee Suk Seo ),노인옥 ( In Ok Noh ) 한국식품영양학회 2003 韓國食品營養學會誌 Vol.16 No.1

It is known as that onion is antioxidation effect, antibiotic effect, blood pressure decreasing effect and reducing serum cholesterol levels. This research about effect that onion concentrate gets blood cholesterol levels and body composition. Subject was 17 adult men of hyperlipidemia. Age distribution of investigation subjects were average 49.4 years old by 40 ~ 56 years old, and average height and weight were 167.6 cm and 75.5 kg each, BMI was 26.9 kg/㎡, and BMR was 1,460.6±87.5kcal, and AMC was 25.0±1.05cm, and BCM was 41.0±2.79cm. In the meantime, the body muscle was 53.7±3.7kg, and fat mass was 18.7±3.8kg, and intracellular fluid was 26.6±1.8kg, and extracellular fluid was 12.8±0.9kg. The % body fat was 24.6±3.8% , and fat distribution was 0.9±0.0%, and the obesity degree was 125.4±8.2%. Vegetables, seaweeds, fruits and juices increased by change of dietary life and greasy foods, instants, breads, rices etc. decreased or there was no change, fast foods and eggs were no change. Also, subject previewed that guidance about stress, smoking, drinking and beverage intake need. If compared the nutrient intake amount with before onion concentrate allowance, it was similar level almost without significant. Energy, calcium and riboflavin are lower than the RDA for koreans. After 3 months, the levels of plasma total cholesterol, triglycerides had decreased significantly : 15.0%, 31.2% respectively. And the HDL-cholesterol and LDL-cholesterol levels also showed a marked reduction of 6.8%, 8.7% respectively. Plasma lipid level change by onion concentrate supplement would can know that case of triglyceride more greatly than plasma cholesterol. The pH and Na^+ level of plasma were low significant since 8 weeks after, and K^+ level increase significant. While Ca^++ level was low significant after 1 month , there was no change since 2 months after, but nCa^++ level was low significantly. Plasma Mg^++ level was no change and nMg^++ level was low significant after intake.

개흉술을 받은 환자에서 정주용자가조절통증의 효과

박희평,오용석 대한정맥마취학회 2002 정맥마취 Vol.6 No.1

Background: Pain is the most important factor responsible for ineffective ventilation and cough in patients undergoing thoracotomy. Intravenous patient-controlled analgesia (PCA) is widely used for postoperative pain control. Opoid contained PCA is likely to increase the incidence of postoperative nausea and vomiting (PONV). We studied the effect of PCA on patients with thoracotomy. Method: After consciousness was recovered from anesthetic emergence, PCA was connected to 85 patients in postanesthetic recovery room or intensive care unit. The PCA regimen was composed of ketorolac, fentanyl and morphine, and the doses of drugs was adjusted according to patient's age and sex. The PCA was set at basal rate 0.5 ml/hr, bolus dose 1 ml, lockout time 10 min. The incidence and severity of nausea, vomiting, sedation, pain and other side effects were assessed at 1, 4, 8, 12, 18, 24, 36, 48, 60 and 72 hr postoperatively. Result: The highest VAS score was 5.7 on 1hr postoperatively. As time went by, VAS score decreased to 3.1. PONV occurred in 31 patients. The incidence of PONV is higher in female than in male (P < 0.01). Sedation occurred in 40 patients, and drowsy state is most common. Both pruritus and urinary retention occurred in 12 patients respectively. Respiratory depression below 8 breaths/min was not observed in all subjects. Conclusion: The use of PCA on patients undergoing thoracotomy represented satisfactory pain relief except immediate postoperative period. Side effects, such as PONV and sedation, were successfully treated by supportive care and temporary hold of infusion of PCA.