• Journal of Nutrition and Health
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• 제29권6호
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• pp.590-593
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• 1996

This study was done to evaluate the effect of dietary calcium level (a diet which met 100% or twice the calcium level in AIN-76 diet) on preventing bone loss in ovariectomized rats. Forty Sprauge-Dawley female rats(body weight 200$\pm$5g)were divided into two groups. One group were ovariecotomized (Ovx) while the others received sham operation(Sham). Thereafter, each rat group was further divided into normal calcium diet(0.52%) and high calcium diet(1.04%) subgroups. All rats were fed on experimental diet and deionized water ad libitum for 8 weeks. The total body, spine and femur bone mineral densities and bone mineral contents were measured by Dual Energy X-ray Absorptiometry, Eight weeks following operation, ovariectomized rats fed a high calcium diet had a significantly higher total bone mineral content, total bone calcium content, spine bone mineral density, spine bone mineral content and femur bone mineral content than ovariectomized rats fed control calcium diet. The correlation between dietary calcium intake level and spine bone mineral density were positive, but there was no correlation between dietary calcium intake and femur bone mineral density. The findings from the present study demonstrated that bone loss due to ovarian hormonal deficiency can be partially prevented by a high calcium diet. Futhermore, these findings support the strategy of the use of a high calcium diet in the prevention of estrogen depleted bone loss(postmenopausal osteoporosis)

• 대한한의학원전학회지
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• 제33권1호
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• pp.1-16
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• 2020

Objectives : This study aims to organize the genealogy of the Ministerial Fire Theory in relation to Wangbing's Dragon Fire discourse through examining how Wang's Dragon Fire content first mentioned in the annotation of 『Suwen』 was included into the discourse of the Ministerial Fire Theory in explaining the concept of Ministerial Fire and its therapeutic application. Methods :First to examine the inclusion and application of the Dragon Fire concept into the Ministerial Fire Theory, Zhudanxi's theory and critiques on him were studied. Next the concept of Dragon Fire within the Ministerial Fire Theory was analyzed, followed by comparison between generations of doctors's therapeutic application of Ministerial Fire and Wangbing's Dragon Fire application. Conclusions & Results : Wangbing's dragon fire concept held an important position in discussing its characteristic as fire within water, which was adopted and differentiated by later doctors in aspects of pathology, deficiency and excessiveness, influenced by various theoretical elements of later periods. In the midst of expansion of the concept from combination of dragon fire and ministerial fire, the therapeutic aspect of it was maintained from Wangbing's original mentioning. This tendency manifested in either awkward combination of Wang's therapeutic methods and the new theory or modification of Wangbing's methods.

• 펄프종이기술
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• 제36권3호
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• pp.52-59
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• 2004

The greater Increase of the demand for environmental friendly materials especially for packaging industry leads to the larger interest in the reusable and recycable materials such as pulp mold. Although the pulp mold has great characteristics for packaging, some deficiency compared with other packaging material like EPS(Expandable Polystyrene) need to be overcome, for example, the relative higher cost. In this report, since the water drainage rate at the forming zone of a wet pulp mold process could have a great influence on the economical efficiency not only by increasing machine speed but also reducing the drying energy, the optimum ways for increasing drainage were investigated The mechanism of vacuum drainage In pulp mold forming was successfully evaluated by using RDA(Retention and Darinage Analyzer). Since the conditions of stock were greatly affected by the pulping time of low consistency pulper, the optimum pupling time was investigated with considerations of all stock preparation processes. The change of stock temperature and the addition of polyelectrolyte could improve the vacuum drainage rate. It was founded that the wire mesh types of mold former had a little influence on the retention because of the relatively mild vacuum drainage. However, the bigger size of dewatering hole showed better drainage rate and could reduce the plugging and con lamination of mold.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 추계학술대회논문집B
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• pp.776-781
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• 2001

To enhance thermal efficiency of thermal facility through recovery of low and medium temperature waste heat, 1MW organic Rankine cycle system was designed and developed. The exhaust gases of $175^{\circ}C$ at two 100MW power plants in pohang steel works were selected as the representative of low and medium temperature waste heat in industrial process for the heat source of the organic Rankine cycle system. HCFC-123, a kind of harmless refrigerant, was chosen as the working fluid for Rankine cycle. The organic Rankine cycle system with selected exhaust gases and working fluid was designed and constructed. From the operation, it was confirmed that the organic Rankine cycle system is available for low and medium temperature waste heat recovery in industrial process. The optimum operating manuals, such as heat-up of hot water, turbine start-up, and the process of electric power generation, were derived. However, electric power generated was not 1MW as designed but only 670kW. It is due to deficiency of pump capacity for supply of HCFC-123. So it is necessary to increase the pump capacity or to decrease the pressure loss in pipe for more improved HCFC-123 supply.

• Journal of Plant Biology
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• 제34권1호
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• pp.9-18
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• 1991

본 연구는 자연상태에서 자란 12종의 왜소개체에 있어 목부구조의 변이에 대한 왜소생장의 영향을 검토하였다. 통수요소 및 섬유의 길이와 접선직경이 정상개체보다 왜소개체에서 더 짧고 좁게 나타났다. 방사조직의 높이도 정상개체보다 왜소개체에서 낮았다. 동일 연륜의 방사폭과 연륜내 세포수는 정상개체보다 왜소개체에서 좁고 적었다. 송백류에서 춘재에 대한 추재의 비는 정상개체보다 왜소개체에서 높게 나타났다. 피자식물의 도관요소의 mesomorphy 정도는 정상개체보다 왜소개체에서 낮았다. 이와 같이 왜소생장은 수분결핍과 같은 환경요인에 의해 극도로 느린 생장을 한 결과로 해석된다.

• 한국환경농학회지
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• 제26권4호
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• pp.294-299
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• 2007

Natural gypsum has been used as a soil amendment in the United States. However, flue gas desulfurization (FGD)-gypsum has not traditionally been used for agricultural purpose although it has potential benefit as a soil amendment. To expand use of FGD-gypsum for agricultural purpose, the effect of FGD-gypsum on soil chemical properties was investigated in the field scales. Application rates for this study were 0 (control), 1.1, and 2.2 Mg ha-1 of FGD-gypsum. After two year application, the soil samples were taken to 110 cm depth and sub-sampled at 10 cm intervals. The heavy metal contents in FGD-gypsum were lower than ceiling levels allowed by regulations for land-applied biosolids. Soil pH was not largely affected by FGD-gypsum application. Although degree of calcium (Ca) saturation in surface horizons increases only slightly with respect to the control, there is a clear decrease in exchangeable aluminum (Al). FGD-gypsum clearly increases the soil electrical conductivity (EC) with increasing application rate. Water-soluble Ca and sulfate is increased with FGD-gypsum application and these ions moved to a depth of at least 80 cm after only 2 years. We conclude that surface application of FGD-gypsum can mitigate toxicity of Al and deficiency of Ca in subsoil of acid soil.

• 생물환경조절학회지
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• 제10권2호
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• pp.101-105
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• 2001

팽연화왕겨 배지는 펄라이트와 수분특성이 달라서 펄라이트는 과채류 재배용 스티로폼베드에서 재배할 경우 1일 1.5~2.0L씩의 급액량을 1일 16회로 분할하여 급액한 처리에서 가장 좋은 생육을 보였으나 팽연화왕겨는 1일 16~24회로 분할 급액할 경우 높은 수량성을 보였다. 또한 토마토 재배시 정식 후 25일간 급액 EC를 높여줌으로써 우수한 생육 및 수량을 얻을 수 있었으며 초기 부숙이 급속히 진행되는 과정에서 발생되는 NO$_3$의 부족을 보완할 수 있을 것으로 판단된다.

• 대한한의학회지
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• 제21권1호
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• pp.99-102
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• 2000

Central diabetes insipidus(CDI) results from deficient vasopressin(antidiuretic hormone) secretion and causes polydipsia and polyuria. Its etiologic diagnosis is confirmed with an increase of urine osmolality by administering desmopressin(DDAVP) after water restriction. Because cm is caused by deficiency of vasopressin, up to now, desmopressin, a synthetic analog of vasopressin, has been the drug of choice in the treatment of CDI. However, under such treatment, CDI patients suffer from the continual administration of DDAVP throughout one's life and high cost of the treatment We administrated oriental herb medicine on a cm patient in a state of discontinuance of DDAVP. Prior to the study, brain sella MRI was scanned to exclude germinoma. In addition, urine analysis, serum and urinary osmolality, daily urinary volume, serum electrolyte levels were measured. Chungsimyunjatang was administered for 15 days, and urine analysis, urine osmolality, daily urinary volume, serum Na were measured several times again during the therapy, As a result, urinary frequency increased, serum Na slightly elevated, but specific gravity of urine, urinary osmolality severely decreased and daily urinary volume substantially increased. However, the frequency of DDAVP treatment was reduced from four times per day to once or twice a day with the continual administration of the Chungsimyunja-tang for two months after the discharge.

• 한국의사학회지
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• 제17권1호
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• pp.143-161
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• 2004

In Dongeuibogam "東醫寶鑑", Qian Yi(錢乙)'s had been reorganized in more elaborated ways, comprising Ju dan Gae(朱丹溪)'s 'Yang is always sufficient and Yin is always deficient theory(陽有餘陰不足論) and Li Dong Yuan(李東垣)'s 'Theory of the Spleen and Stomach(脾胃論)'. In organizing the contents, 5 Organs(五臟) were mostly concerned especially 'the Heart, the Fire (心火) and the Kidney, the Water(腎水)' as the axis and 'the Spleen and Stomach(脾胃)' as the center of 5 Organs. Based on this concept, the patterns of disharmonies were categorized and the table of content was organized. In this book, 'Deficiency-Excess and Nourishing-Draining(虛實補瀉)'is the basic treatment rule and the concept of 'Yin and Yang(陰陽)' and 'Exterior and Interior(表裏)' is considered to help tell the prognosis. This book has importance of systemizing Qian Yi(錢乙)'s , which was previously mentioned in Hyangyakjipseongbang("鄕藥集成方"),Euibangyoochui("醫方類聚"), Euirimchyalyo("醫林撮要"), by comprising the theories of Jin Yuan Si Da J ia -the four great masters of the Jin Yuan Dynasties(金元四大家).

• Journal of Medicine and Life Science
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• 제16권1호
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• pp.34-38
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• 2019

Hypogonadism is a clinical syndrome that results in hormone deficiency and can be classified as 1) primary caused by the gonadal failure and 2) secondary by the hypothalamus-pituitary gland dysfunction and/or cardiometabolic complications. Recently the presence of thyroid hormone receptors in different testicular cell types was demonstrated, and thus thyroid dysfunctions would be another cause of secondary hypogonadism. Thus, we investigated the effects of perinatal hypothyroidism on hypogonadism in male Sprague-Dawley rats. Perinatal hypothyroidism was induced by daily administration of 0.05% 6-propyl-2-thiouracil (PTU) by tap water from gestation day 15, which were compared with negative control (PTU (-)) group. At postnatal day 28, hypothyroid pups were divided into 2 groups: PTU (+) group - continued PTU treatment and PTU (+/-) group - stopped PTU until postnatal day 49. Body weights, dehydrotesosterone (DHT), and testosterone levels were checked 2 and 3 weeks after grouping. Body weights were significantly decreased in PTU(+) and PTU(+/-) groups compared with PTU (-) group at postnatal day 28. 3 weeks later, PTU (+/-) group significantly gained weight compared with PTU (+) group. DHT and testosterone levels significantly decreased with PTU treatment, but increased 3 weeks after stopping PTU administration. Perinatal PTU-induced hypothyroid hypogonadism was sustained for 2 weeks after stopping PTU administration, but restored gonadal hormone levels 3 weeks after stopping PTU. These results suggest that researchers should design an experiment on hypothyroid hypogonadism based on the estimated period.