• Journal of the Korean Wood Science and Technology
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• 제27권3호
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• pp.99-116
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• 1999

목재 hollow core 형태의 프러쉬문은 가구과 목공품 산업에서 주요 제품으로 사용중 틀어짐과 좌굴은 매우 중요한 문제이다. 틀어짐은 도아 표면재 간의 물리적 및 기계적 성질의 차이에 기인된다고 알려져 있다. 본 연구는 수치적 모델덜을 사용해 틀어짐과 좌굴을 예측하는데 그 목적이 있다. 여러 환경조건에서 경질섬유판과 합판으로 만들어진 프러쉬문에 대한 각 모델들과 실측치간의 비교를 하였다. 문의 틀어짐과 좌굴을 예측하기 위해 3가지 연속체 모델, 즉 보, 판상 및 판상-좌굴 모델이 채택되었다. 틀어짐은 고습에서보다 저습에서 현저하게 훨씬 현저하게 발생되었으며, 포아송 비를 고려한 판상 모델은 저습에서 보 모델보다 더 정확하게 틀어짐을 예측할 수 있었다. 그러나 고습에서 좌굴이 문의 표면재에 발생하기 때문에 판상-좌굴 모델 이 모든 시험범위에서 가장 적절하였다.

• 설비공학논문집
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• 제23권10호
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• pp.656-661
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• 2011

The amount of water resources that can be used tend to be decreased gradually. In contrast, the rapidly increasing water consumption is a problem that need to be addressed. Renovation and equipment replacement to improve energy efficiency and to reduce expenditure for building usage is required. But the excessive initial investment cost and the prolonged of pay back period may be uneconomical choice. Water usage for cleaning the toilet bowl accounts for 27%of the total water usage. Water-saving valve that can select the amount of water for cleaning toilet bowl can be reduced expenditure. After installing water-saving valve, analysed the economic effects. Water-saving valves compared with flush valves, and researched the amount of water usage. Then analyzed for the economic effects. Water-saving valve was used 5.6 ${\ell}$/time for cleaning toilet bowl. In contrast, flush valve was consumed 8.4 ${\ell}$/time. Water-saving valve's water-saving rate was 33.3%. The initial payback period for Water-saving valve was 459.5 days. By a small investment in water saving valve, the economic benefits can be obtained.

• Archives of Pharmacal Research
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• 제17권5호
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• pp.360-363
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• 1994

Column--swtiching technique with a reversed-phase high performance liquid chromatographic method has been developed for the routine analysis of radioiodinated insulin and its degadation products in biological fluids. The diluted biological samples were loaded onto a precolumn packed with LiChrosorb RP-8 $(25-40{\;}{\mu}m)$ using 0.1% trifuoroacetic acid (TFA) in water as a washing solvent. After valve switching, the concentrated insulins were eluted in the back-flush mode and separated by a W-Porex $C_{18}$ column with a gradient of 0.1% TFA in water and 0.1% TFA in acetonitrile as the mobile phase. The method showed good precision, accuracy and speed with the detection limit of 20 pg/ml. Total analysis time per sample was about 40 min and the coefficients of variation were less than 8, 2%.

• Archives of Pharmacal Research
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• 제17권6호
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• pp.458-461
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• 1994

A new high-performance liquid chromatographic method with column switching has been onto a Bondapak phenyl/corsil $(37-50{\;}{\mu}m)$ precolumn and polar plasma components were washed with 0.06 M borate burffer. After valve switching, the concentrated drug were eluted in the back-flush mode and separated on a ${\mu}-Bondapak$ C18 column with acetonitrilke-phosphate buffer as the mobile phae. The method showed excellent precision, accuracy and speed with detection limit of $0.01{\;}{\mug}/ml^{-1}$. Total analysis time per smaple was less than 20 min and the coefficients of variation for intra and inter-assay were less than 5.635. This method has been successfully applied to plasma smaples from eats after oral administration of omeprazole.

• 한국도시환경학회지
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• 제18권4호
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• pp.523-530
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• 2018

오존층의 파괴물질인 CFCs의 대체물로써 $SF_6$의 사용량이 늘어나면서 대기 중의 $SF_6$의 농도가 높아지고 있다. $SF_6$은 지구온난화가스중의 하나로써 대기 중에서 3,200년 이상 머무를 뿐만 아니라 온난화지수도 매우 높아 무려 22,800이나 된다. 그러나, 대기 중에서의 $SF_6$ 농도는 낮은 수준이어서 검출한계이하인 경우가 많다. 본 연구에서는 이러한 극미량 $SF_6$ 농도를 정확하게 분석하기 위해서 $GC-{\mu}ECD$를 이용한 12가지 분석방법을 실험적으로 고찰하였다. 극미량 $SF_6$ 농도를 가장 정확하게 분석할 수 있는 방법은 Carboxen-1000 물질을 사용한 흡착관과 저온농축 고온탈착 방식의 농축장치에 역추출방식의 분석법을 사용할 경우가 최상의 효율을 나타냈다.

• 동의생리병리학회지
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• 제18권4호
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• pp.982-989
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• 2004

The following is the conclusion drawn from a review on the clinical cases cured by Jaeumkangwha-tang in perspective of Hyungsang medicine. Jaeumkangwha-tang originated from the modified Jibaiksamul-tang in 'Manbyunghuichun(萬病回春)' and applied to the diseases induced by flaming fire due to deficiency of Yin. In 'Donguibogam', there are two kinds of Jaeumkangwha-tang. One in the chapter of kidney is mainly prescribed to replenish the Jung of kidney and applicable to the cases with configuration and symptom of kidney along with fire. The other one in the chapter of fire is applied to the symptoms of flaming fire due to deficiency of Yin. The characteristics of the patients treated by Jaeumkangwha-tang from the viewpoint of Hyungsang medicine can be classified as follows : ① configuration: Dam type, Shin type, inverted triangular type(:天垂象), bird type, round eyes, thin lips, slender waist, thin leg, pretty face, sparkling eyes, prominent upper lip and upward eyes and nose. ② color : dark red complexion, red cheek bone, red lips and red glabella. ③ pulse : fine and fast pulse and pulsation on the Chuk(尺) in man and so forth. ④ symptoms: agility, talkativeness, pimpled face, crooked back, weakness to the heat of summer, light eating, timidity, blood-shot eyes, night sweat, cough, abundant phlegm, hemoptysis, bloody spittle, enervation, emaciation, back pain, flaccidity of lower limbs, involuntary emission, nocturnal emission, heat sensation in the chest palms and soles, anger, flush on cheek bone, red lips and dry mouth, reddish tongue, stiff excrement, scanty yellow urine, etc.

• 대한한방부인과학회지
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• 제23권2호
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• pp.116-123
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• 2010

Purpose: During Postpartum period many women complain multiple pain, cold hypersensitivity, hot flush, sweating and so on. We call the postpartum disease as San Hu Pung. We studied DITI Characters of women suffering from Postpartum disease. Methods: We studied 74 postpartum women visiting OOhospital from February 2006 to December 2009. The subjects were categorized in two groups, symptom group and no symptom group. We measured the temperatures of abdomen, upper and lower limb and back. We studied the difference of DITI between two groups by Student T-test using SPSS for windows(version 17.0). Results: The general characteristics were not different statistically. Temperatures of abdomen and back of two groups were not different statistically. Temperatures of both LR3 of symptom group were statistically higher than no symptom group. The difference of both PC8 and LU4, both LR3 and ST32 of symptom group were statistically higher than no symptom group. Conclusion: The results suggest that women suffering from Postpartum disease shows high temperatures on hand and foot. It seems that postpartum disease patients tend to have blood deficiency. DITI can be useful to diagnose San Hu Pung. More studies to diagnose San Hu Pung would be needed.

• 대한한방부인과학회지
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• 제26권4호
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• pp.213-222
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• 2013

Purpose: The purpose of this study is to evaluate the effects of Gyejigabuja-tang on a menopausal female patient complained of excessive sweating after bilateral salpingo-oophorectomy (BSO). Methods: We studied one menopausal female patient complained of excessive sweating who visited OO University Hospital from 10th July 2013 to 23th July 2013. We only treated her with Gyejigabuja-tang. The climacteric symptoms of the patient had been estimated with Numeric Rating Scale (NRS) and Menopause Rating Scale (MRS). Results: After treatment, climacteric symptoms were improved and the score of MRS was reduced from 20 to 10 during 12days. NRS score of sweating was reduced from 10 to 2. NRS scores of fatigue, hot flush, thirst, anorexia, dyspepsia, back pain and cramp of calves also reduced after treatment. Conclusions: This study suggests that Gyejigabuja-tang significantly reduced the climacteric symptoms of patient.

• 여성건강간호학회지
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• 제3권2호
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• pp.268-281
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• 1997

This study was done for the purpose of analysing the relationship between menopausal syndrome and depression in the pre and post menopausal women's group. Data were collected by a questionnaire from November, 1995 to December, 1996. The subject were 244 midlife women(94 subjects were in pre-menopausal period, 150 subject were in post-menopausal period). The instruments used for this study were the menopausal syndrome scale by Neugarton and depression scale by Zung. Data were analyzed with the SPSS/PC using frequency, t-test, and Pearson correlation coefficients. The results of this study were as follows ; 1. The most serious menopausal symptom in the midlife women was 'back pain and joint pain'. 2. The item of 'Hot flush'(t=-2.78, p<0.01), 'sweating'(t=-2.31, p<0.05) and 'nervousness'(t=-2.13, p<0.05) as menopausal syndromes were statistically significant in the two groups ; Post menopausal group were higher then premenopausal group. 3. Postmenopausal group were a little higher then premenopausal group as depression level. It was none statistically significant in the two groups. 4. The relationship between menopausal syndromes and the level of depression was statistically significant in the group of post-menopausal group(r=0.2083, p<0.01).

• 대한치과보철학회지
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• 제36권1호
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• pp.64-80
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• 1998

The risk of cross-contamination in dental clinic is very high. Those who are engaged in dental clinic are exposed to various microorganisms in saliva and blood of patient. Potential possibility of cross-contamination of patient to patient, patient to dentist, dentist to laboratory technician always exist, which is important in the view of public health. It is well known that microorganisms may cause cross-contamination by suck-back of microorganisms into the water supply line or air supply line of dental unit and sprayed back into the next patient's oral cavity. The majority of microorganisms coming from dental unit are water microorganisms from the main water supply which have colonized the tube within the units and multiplied in the relatively warm and stagnant conditions. The purpose of this study is to measure the extent of microbial contamination of dental unit and ultrasonic scaler, to evaluate that dental unit water supply is suitable for drinking water, and to assess the effect of flushing on reduction of microbial contamination of dental unit and ultrasonic scaler. In the first experiment, water samples(50ml) from 20 dental units and 10 ultrasonic scalers in Seoul National Univ. Hosp. were tested for the presence of coliform. The samples were filtered by membrane filtration technique.(Microfil system, Millipore Co. U. S. A.) The filter was then placed onto MacConkey agar plate and the plates with filter on it were incubated aerobically at $37^{\circ}C$ for 5 days. The colors and shapes of colonies were examined if those were coliform. To verify the presence of coliform, the colonies were inoculated into phenol red lactose broth and incubated aerobically at $37^{\circ}C$ for 2 days. The fomation of gas was observed. In the second experiment, water samples from 20 handpieces, 10 ultrasonic scalers and 30 A/W syringes after 0, 2, 4, 6 min. flushing respectively were taken. $200{\mu}l$ water samples were spreaded on Brain Heart Infusion agar plate and the plates were incubated aerobically at $37^{\circ}C$ for 5 days. The number of colony was counted. The results obtained were summarized as follows 1. The water from dental unit and ultrasonic scaler was not suitable for drinking water. 2. No coliform was founded in dental unit and ultrasonic scaler water supply. 3. The number of colony of dental unit and ultrasonic scaler was highest in the group of o min. flushing(p<0.05). 4. There was no statistically significant difference in the extent of microbial contamination among handpiece, ultrasonic scaler and A/W syringe (p>0.05). 5. The number of colony was lowest in the group of 4 min. flushing, but there was no statistically significant difference among 2, 4, 6 min. flushing groups.(p>0.05) 6. It is recommended to flush dental unit water line for 4 min. after use on each patient.