• 한국수자원학회논문집
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• 제36권2호
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• pp.237-249
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• 2003

우량계에 대한 바람의 영향은 우량의 감소와 강우자료의 일관성에 영향을 미치게 된다. 이러한 강우량을 보정하기 위해서는 강우의 감소율을 산정 할 수 있는 연구가 필요하다. 이러한, 강우의 감소에 대한 연구는 거의 수행되지 않았으며, 적절한 보정기법에 대한 연구는 미흡한 실정이다. 본 연구에서는 강우의 입자 크기에 따른 낙하속도를 산정 하였다. 이를 이용하여 강우의 입자크기에 따라 강우의 감소율을 보정할 수 있는 모형을 실험을 통하여 검토하였다. 실험결과 강우의 감소율은 강우의 강도와는 상관없고 강우의 입자크기에 따라 영향을 받는 것으로 나타났다. 본 연구에서 산정된 강우감소율은 실험결과와 잘 일치하고 있으며, 보정계수로 사용가능 한 것으로 판단된다.

• Journal of Plant Biology
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• 제37권3호
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• pp.309-316
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• 1994

To make regional comparisons of water status of pitch pine, the temporal changes of water status in pitch pine were investigated at different areas; urban Seoul (heavily polluted area), surburb of Seoul (lightly polluted area), and rural area (control). The effects of air pollutants, acid rain and chemical properties of soil on water deficit in pitch pine were also investiaged. Water content of needles growing at polluted areas were usually lower than that at unpolluted area. Water saturation deficit of needles growing at polluted areas were usually higher than that at unpolluted area especially in dry season. These results indicated that water in needles growing at polluted areas were usually more deficient than that at unpolluted area, and were more deficient in April than other months. At polluted areas, the older the needles were, the more quickly transpirated the water in the needle was. At unpolluted areas, however, water in old needles was not so quickly transpirated as those at polluted areas. Water potential of needles of pitch pine seedlings treated with simulated acid rain (SAR) of pH 3.5 decreased more quickly than that of needles treated with SAR of pH 5.6. Loss of water through epicuticular layer was greater in the following order: magnesium deficiency＋100 $\mu$M aluminium>100$\mu$M aluminium>magnesium deficiency>control. In addition to Mg deficiency and Al toxicity, growth decline of pitch pine widely occurring in polluated Seoul could to a large extent be due to cuticle degredation and abnormal vertical distribution of fine roots, which lead to water stress, particularly in dry seasons.

• Journal of Plant Biology
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• 제22권1_2호
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• pp.21-27
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• 1979

Sandy loam plots of pH 5.5, which was created by the reclamation of highlands in Yongin county, Kyeonggi province, was selected for the present experimental study. Sugar beet was cultured in these plots by treating them with calcium hydroxide and 3 replications to maintain pH 5.5, 6.4, 6.8, 7.2, and 7.6, respectively. The growth and yield of sugar beet were investigated and the results obtained showed a great deal of boron deficiency. The growth in its early stage was favorable in high pH plots, while no significant difference was observed in sugar content, root weight and sugar production at the time of harvest in each treated plot. The tendency of sugar accumulation appeared to be identical in terms of pattern in each treated plot; i.e. sugar was accumulated until early September but declined momentarily from the middle of September and then the sugar accumulation was resumed from the middle of October. The number of individuals in boron deficiency was larger in high pH plots and the condition of such boron deficiency was also severe. The result of analysis of boron contained in plant body revealed that the boron content of individuals caused boron deficiency by water culture and that occurred in the plots was small alike. The appearance of boron deficiency is characterized by the emergence of black stripes on the surface of the basal part of petiole, severe necrosis of young leaves in the area of growing point and severe wrinkles. Therefore it is felt necessary to pay particular attention to boron deficiency in the culture of sugar beet in our country.

• Nutrition Research and Practice
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• 제3권2호
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• pp.122-127
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• 2009

Folate is generally considered as a safe water-soluble vitamin for supplementation. However, we do not have enough information to confirm the potential effects and safety of folate supplementation and the interaction with vitamin $B_{12}$ deficiency. It has been hypothesized that a greater methyl group supply could lead to compensation for vitamin $B_{12}$ deficiency. On this basis, the present study was conducted to examine the effects of high-dose folic acid (FA) supplementation on biomarkers involved in the methionine cycle in vitamin $B_{12}$-deficient rats. Sprague-Dawley rats were fed diets containing either 0 or $100{\mu}g$ (daily dietary requirement) vitamin $B_{12}/kg$ diet with either 2 mg (daily dietary requirement) or 100 mg FA/kg diet for six weeks. Vitamin $B_{12}$-deficiency resulted in increased plasma homocysteine (p<0.01), which was normalized by dietary supplementation of high-dose FA (p<0.01). However, FA supplementation and vitamin $B_{12}$ deficiency did not alter hepatic and brain S-adenosylmethionine (SAM) and S-adenosylhomocysteine (SAH) concentrations and hepatic DNA methylation. These results indicated that supplementation of high-dose FA improved homocysteinemia in vitamin $B_{12}$-deficiency but did not change SAM and SAH, the main biomarkers of methylating reaction.

• 대한한의학원전학회지
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• 제20권3호
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• pp.49-56
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• 2007

The "Somun Jogyongron(素問 調經論)" describes excess and deficiency syndromes. The study suggests that excess syndrome(實證) is caused by vigorous pathogenic fire(火邪)(the spirit(神)), pathogenic dryness(燥邪)(Gi(氣)), pathogenic wind(風邪)(blood(血)), pathogenic dampness(濕邪)(physique(形)) or pathogenic coldness(寒邪)(will(志)). When pathogenic fire is dominant within the body, Gi and blood becomes excessive and come out of the body, but the body cannot take them back, leading to the symptom in which the patient cannot stop laughing. When pathogenic dryness prevails, the lung(肺) cannot function properly. This means that the convergence(收斂) function of the clearing the lung and descending Gi(肅降) is deteriorated, and the patient shows symptoms of dyspnea and cough. Strong pathogenic wind increases the ascencling Gi in the liver(肝氣) and fuel angry emotion when the patient becomes upset. When pathogenic dampness is dominant, spleen(脾) function drops due to lumping effects, and the patient will experience abdominal distention(腹脹), which will disturb urination and defecation. When pathogenic coldness prevails, abdominal distention occurs due to condensating effects, and Yang Gj(陽氣) in the kidney(腎) is disturbed, leading to digestion disorders and eventually water-grain dysentery. Deficiency syndrome is caused by the lack of essential Gi(精氣) in the five viscera(五藏). Deficiency of sprit means the lack of Gi in the heart(心氣), so the patient becomes vulnerable to sadness. Deficiency of Gi means the lack of Gi in the lung(肺氣), so the patient may have breathing disorders. Deficiency of blood means the lack of Gi in the Liver(肝氣), so the patient can be easily scared. Deficiency of physique means the lack of Gi in the spleen(脾氣), making it difficult to use arms and legs. Deficiency of will means the lack of Gi in the kidney(腎氣), so Gowl syndrome(厥證) can ensue.

• 한방안이비인후피부과학회지
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• 제7권1호
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• pp.15-34
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• 1994

This is a literature Study on ophthalmologic disease remedies of the four famous physicians in Jin Yuan period. The results were as follows: 1. Yu Wan So regarded the cause of ophthalmologic disease as the wind and heat(風熱), the blood deficiency(血少), or the deficiency of vital function and essence ,of the kidney(腎氣虛). For each treatment he used the method to remove wind and heat(除風散熱), the tranquillizing and tonifying method to nourish the heart and to relieve mental strain due to dificiency of vital essence(養血安神). the method to nourish Yin in the kidney(補腎水). The important nature of the these medicines is bitter and cold. 2. Jang Jong Jeung regarded the cause of ophthalmologic disease as the blood excess(血太過). or the blood deficiency(血不及). or the fire and heat(火熱). For each treatment he used the method to extract blood(出血療法). the method to nourish the liver and the kidney(補肝腎療法). or the method of vomiting and diarrhea(吐不法). The medicines are usuallly classified into external treatment medicines(外用藥). medicines to disintegrate mass(破積聚藥). purgating medicines(攻下藥). 3. Lee Dong Won regarded the cause of ophthalmologic disease as the spleen and the stomach weakness(脾胃虛弱), excessive fire in the heart(心火太盛). For each treatment he used the method to tranquillize the spleen and the stomach (調理脾胃). the tranquillizing and tonifying method to nourish the heart and to relieve mental strain due to deficiency of vital essence(養血安神). 4. Ju Dan Gye regarded the cause of ophthalmologic disease as the wind and heat(風熱). the blood deficiency(血少). the mental exhaustion(神勞). the kidney weakness(腎弱). For each treatment he used the method to remove wind and heat(除風散熱), the method to nourish blood and yin water(養血補水), the method to relieve mental strain and to remove spiritual heat(安腎瀉神火). the method to nourish yin water(養陰水). These drugs are usually classified into the medicines to remove endogenous heat(淸熱藥). the medicines to nourish yin(補陰藥).

• 산업기술연구
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• 제18권
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• pp.425-430
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• 1998

The Asan Bay area Korea is situated in an unbalance or water supply and demand relating to the Ansung, Sapkyo, Dangjin and Youmwha rivers and their estuary reservoirs. The multi-reservoir operation was studied by the Hierarchical Operation Model for Multi-reservoir System(HOMMS) assuming that these four estuary reservoirs were linked to each other in order. The result of this study shows that storage capacity deficiency in 2011 was estimated as 8 MCM in the Sapkyo and 31 MCMin Dae Ho estuary reservoir, respectively. In case of linking four reservoirs, the water deficiency will not occurs in all the reservoirs even if additional agricultural water of 78 MCM/yr was supplied. Total additional water demand for agricultural, municipal and industrial uses was estimated as 321.9 MCM/yr while additional supply by linking the reservoirs was estimated as 160.4 MCM/yr. 50% of additional demand. The remaining 161.5MCM/yr would be supplied transferring other watershed.

• 동의생리병리학회지
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• 제19권3호
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• pp.573-579
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• 2005

The followings are the conclusions drawn from the clinical cases of apoplexy; The main cause of apoplexy is the deficiency of both Jung and Ki. dam typed persons are stricken with paralyses because of the insufficiency of the kidney water. On the other hand, bangkwang typed persons' apoplexy comes from the deficiency of Ki and dump-phlegm. The prevention of apoplexy is very important so that porpe medical care should be taken at the appearance of premonitory symptoms like vertigo, dim sight tinnitus, stiff neck, numbness and others. It appears very reasonable both clinically and pathologically that Li dongyuen classified the apoplexy in to three groups : the first group is apoplexy involving meridians ; the second. involving Bu ; the third, involving Jang. The accurate diagnosis of apoplexy regulates com prehension consideration of four factors configuration color, pulse and symptoms and distinction from the similar diseases. Apoplexy is the up wand floating of Yaug in deficiency due to the deficiency of genuine Yim. In its early stages it should be treated by eliminating the excess in the upper pant. In the lower pant becomes the fundamental treatment.

• 대한토목학회논문집
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• 제31권3B호
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• pp.253-264
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• 2011

일반적으로 가뭄은 기상학적 가뭄, 농업적 가뭄, 수문학적 가뭄, 사회경제학적 가뭄으로 구분하여 정의한 후 정성적 혹은 정량적 평가를 수행한다. 이중 기상학적 가뭄, 농업적 가뭄, 수문학적 가뭄에 관련한 연구는 활발히 진행되고 있으나, 상대적으로 사회경제학적 가뭄평가와 관련한 연구는 미미한 실정이다. 본 연구에서는 우리나라에서 적용가능한 사회경제학적 가뭄을 정의하고 가뭄평가를 수행하였다. 사회경제학적 가뭄을 평가하기 위해서 우리나라의 인구증가와 산업발전을 반영하는 용수수요 현황과 수자원 공급시설의 개발에 따른 가용 수자원의 증가를 반영하는 용수공급 현황을 상대적으로 비교할 수 있는 용수과부족지수(WEDI)를 제안하였다. 본 연구에서 제안된 용수과부족지수의 타당성을 검토하기 위해 기존의 가뭄지수(SPI, PDSI)와 실제 가뭄발생(2001년 봄가뭄)과 비교 분석을 수행하였다. 용수과부족지수를 경상도에 적용하여 용수수요량 대비 용수공급량을 비교 분석한 결과 상대적으로 용수가 부족한 지역과 여유있는 지역을 구분할 수 있었다.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.15-15
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• 1999

No Abstract, See Full Text