남조류의 체외 대사부산물이 다른 조류의 광합성에 미치는 타감작용

김범철,허우명,황길순,안태석,심재형 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

The effect of cyanobacterial extracellular byproducts upon the aIgal photosynthesis was assessed to elucidate the allelopathic effect of algal blooms in eutrophic lake. Algal cultures were filtered with 0.2μm membrane filters to remove algal cells and sterilized. 0 to 30m1aliquots of filtrate were added to 25m1 culture suspensions of other algal species, and the (14)^C uptake rates wert measured. The filtrates of cyanobacterial cultures(Anabaena flos-aquae, Phormidium sp.) inhibited the photosynthesis of green algae(Selenastrum capricornutum and Scenedesmus brasiliensis), while the filtrate of Selenastrum capricornutum and Scenedesmuns brasiliensis did not inhibit Anabaena flos-aqiae. In the autoinhibition test Anabaena flos-aquae, Selenastrum capricornutum, and Scenedesmus brasiliensis showed positive, negative, and no effects, respectively.

소양호에서 인의 존개 형태별 분포에 관하여 : The Distribution of Phosphorus Fractions in Lake Soyang

김범철,허우명,황길순,김동섭,최광순 江原大學校 附設 環境硏究所 1996 環境硏究 Vol.13 No.-

The distribution of phosphorus in Lake Soyang from January 1985 to August 1992 was surveyed by the measurement of soluble reactive phosphorus(SRP), total dissolved phosphorus(DTP), and total phosphorus(TP) concentration. SRP concentration was in the range of 2~7㎎/㎥ in epilimnion, and 4~200㎎P/㎥ in hypolimnion. The vertical distribution pattern of SRP showed a large difference with the season. SRP concentration decereased during the growing season of phytoplankton in the epilimnion of Lake Soyang and increased in hypolimnion during the oxygen depletion. Higher concentration near the bottom implies they are diffused from the bottom sediment where organic particles are settled and degraded. SRP, DOP, POP and TP concentration was higher in the meralimnion of Lake Soyang in rainy season It might be related with storm runoff. General trend of TP variation is that the TP concentration of water column is increasing substantially from yeat to year. TP concentration in the surface water increased from 5㎎P/㎥ at 1985 to 20㎎P/㎥ at 1992.

미국 금융정책변경이 한국경제에 미치는 영향

成範鎔,金汶姬 홍익대학교 경영연구소 2001 경영연구 Vol.26 No.-

한강수계 인공호의 부영양화에 관한 비교 연구

김범철,안태석,조규송 江原大學校 附設 環境硏究所 1989 環境硏究 Vol.6 No.-

Trophic states were surveyed in reservoirs of the Han River. Trophic states were assessed from chlorophyll a concentration, Secchi sisc transparency, total phosphorus andprimary productivity in recent several years. Trophic state indices(TSI)sere calculated from the summer-time average of water quality data. TSIs were in the rage of mesotrophy to eutrophy, from 40 to 55. The highest TSI of all the frservoirs of the Han River was observed at the inlet of the south Han River in Lake Paldang. TSI varied with year because of such event as turbid flood inflow, water bloom, and descending water level. The correlation ceofficients between the six TSIs were high, but the probabilities of paired T-test were very low, which means significant differences in the absolute dimensions of the TSIs. The correlation between TSI (SD) and TSI (TP) was highest and TSI(Chl) showed lower correlation with TSI(SD) and TSI(TP)

The Hypolimnetic Anexie zone and the Metalimnetic Oxygen Minimum Layer in a Deep Reservoir, Lake Soyang

김범철,조규송 江原大學校 附設 環境硏究所 1989 環境硏究 Vol.6 No.-

소양호의 용존산소 수직분포를 1985년 7월부터 1989년 7월까지 1∼2개월 간격으로 조사하였다. 전반적으로 용존산소농도가 매년 감소하는 추세를 보이고 있으며, 특히 1988년에는 심층에 무산소층이 형성되어 순환기 직전에는 저층으로부터 15m 높이까지 확대되었다. 이는 1980년대초까지 빈영양호이었던 소양호가 부영양화되고 있음을 보여주는 것이며 무산소층에서는 저층으로부터 용출된 무기인산염과 암모니아의 농도가 매우 높아 앞으로 영양염용출 증가에 의해 소양호의 부영양화는 가속될 것으로 예상된다. 또한 최근 수년간 겨울기온이 높았던 것도 수직혼합을 감소시킴으로써 용존산소 감소에 기여했을 것으로 보인다. 매년여름 수심 10∼20m에서 중층 산소최저층이 나타나고 있는데 이것은 국내 대형 저수지에서의 전형적인 분포형태인 것으로 보인다. 산소최저층이 표층의 혼합층 바로 아래에 형성되고, 수심이 깊어지면서 다시 서서히 산소가 증가하는 것으로 볼때 형성원인은 표층의 수온이 높아 산소비율이 크고 표층의 혼합층까지만 산소가 공급되기 때문인 것으로 보인다. 또한 장마철에 중층으로 유입되는 유입수에 현탁물이 많이 포함되어 있으며 산소최저층은 새로이 형성되는 중간츠으이 상부와 수심이 일치하고 있고 항상 여름의 우기에 형성되는 것으로 보아 우기의 유입수와 관련이 있을 수도 있다. The seasonal and vertical dissolved oxygen distributions were surveyed from July 1985 to July 1989 in a warm monomictic dendritic-shape reservoir, Lake Soyang. DO content showed the general trend of decrease from year to year, implying the advance of eutro· phication. HypoUmnetic anoxic zone began to develop in 1988 reaching upto 15 m from the bottom, which is an epoch·making event in Lake Soyang, well-known as a clear oligotrophich lake until early 1980s. In anoxic zone phosphate and ammonia concentration were very high, and nitrate depleted, which is expected to accelerate eutrophication of Lake Soyang. Insufficient cooling of surface waters in warm winters of 1986 to 1988 seems to have enhanced the DO decrease by reducing the duration of turnover. Metalimnetic 00 minimum layer appearing every late summer at the depth 15∼20m is a remarkable feature of DO distribution which is thought to be the typical pattern in large Korean reservoirs. The mechanism of the formation of metalimnetic oxygen minimum is further to be studied. However, it seems to be caused by the higher rate of oxygen consumption in epilimnion due to high temperature and the oxygen supply limited to only surface mixed layer, since it is formed just below the mixed layer and dissolved oxygen increase gradually in deeper layer. The intermediate current of storm runoff laden with organic debris of terrestrial origin might be the alternative cause.

婚姻無效에 關한 硏究

鄭範錫 건국대학교 1974 樂圓誌 Vol.9 No.1

민법 제815조에는 무효혼을 규정하고 있다. 그러나 민법의 이 규정에 해당하지 않는 혼인중 과연 무효혼이 없는가를 살펴 볼 필요가 있다고 생각된다. 민법 제810조(중혼의 금지)에 의하면 「배우자 있는 자는 다시 혼인하지 못한다」라고 규정했고, 민법 제 816조(혼인취소의 사유)의 규정에 하면 이중혼은 취소할 수 있게 되어 있다. 다시 말하면 이중혼은 무효인 것이 아니고, 유효혼이며 다만 취소할 수 있을 따름인 것이다. 그러나 모든 이중혼을 이와 같이 취급하면 너무나 크게 선량한 풍속에 위반하고 형평의 관념에 배치된다

히스타민 및 항히스타민제가 L_(1210)백혈병세포계증식에 미치는 영향에 관한 실험적 연구

염범우,이대일,백승룡 고려대학교 의과대학 1986 고려대 의대 잡지 Vol.23 No.1

There is close relationship between growth of tumor cell and immunologic function of the host. And growth of tumor cell also partially depends on histamine which indirectly modulate degree of immunologic response of the host. However, there is no report on direct effect of histamine on the growth of tumor cell. Therefore, to evaluate direct effect of histamine on growth of tumor cell, histamine and Hz-receptor antagonist (cimetidine) were added in Fischer's culture media in concentration of 10^(-3)M , 10^(-4)M and 10^(-5)M and cultured L1:10 leukemic cell for 24,72 and 96 hours. The results are as followings; 1. Histamine iii high concentration(10^(-3)M) inhibited the proliferation of L_(1210) cell lines. 2. H2-receptor antagonist showed no inhibitory activity on the proliferation of L_(1210) leukemic cell lines a t each concentration and (10^(-3), 10^(-4) and 10^(-5)). 3. The combination of histamine and H2-receptor antagonist showed temporary inhibitory effect on the L(1210) leukemic cell lines at 24 hours culture. Above results suggest that histamine show inhibitory activity to growth of L_(1210) leukemic cell lines through H2-receptor.

韓國의 工業化와 農地制度

鄭範錫,金炳台 건국대학교 1974 學術誌 Vol.17 No.1

1 The history of human life is the process of pursing the condition of better life, under which technology has improved and social institution changed. Any social institution which is not adaptable to, or detrimental to, technological improvement is bound to be reformed or discarded. Good eoamples can be seen in land reforms which several countries carried out in the wake of World war II. The primary cause of the Land Reform in Korea was to get rid of the feudal factors which had checked agricultural development. It was undertaken to keep step with improving industrial society, to make the most effective use of natural resources, to promote the public welfare and help contribute to the welfare of the people. Since the Reform introduced about 20 years age. the industry has developed to a higher level, while agriculture has made slow progress. As a result, the gap between agriculture and industry has grown evenmore, which is now an obstacle to the industrial development. Therefore, the peasant's land-owner-ship system breeded from the Land reform has shown its limit to the agricultural development. 2 In Korea, the land Reform in 1950 eliminated a parasitic large-landowner ship-system. As a result, a total of 767,320 hectares of farm land was the tenant farmers were put in place of the landed through the compensatory purchase and distribution, that is, because of the distribution of 567,320 ha farm lands to 1,646,180 houses did the tenant farmers disappear. Not long after the farm lands were distributed, however, the heavy burden of repayment, the continued low grain price policy, and the resulting penury of farmers which was the Land Reform and, moreover, even mire aggravated during the Korean War in 1950 forced them to resell the dstributed lands to become another tenant farmers. The farmers who thus again turned landless now account for about 26.5% of the total farmers, while about 20% of the total farm land area, or 460,000 hectares, are put under tenant system, though it may not be defined as "feudalistic." Moreover, once they became free from the tenant system, they also became free from any protection as well. Thus, they got poorer than before the Land Reform, and the fertility of soil decreased even more. The average size of farm household dicreased to 0.92ha compared with 1.08 at the end of 1945. The new land ownership system, thus, became an important factor deterrent to both the growth of productivity and the improvement of technology in the agricultural fetor, resulting in a wider gap between the industrial and agricultural fetors. 3 All of these considerations stress the urgent need to introduce a new reform with regard to the landownership system. Basically, such a reform should be related to the reassesment of the principle of self-supporting, independent farmers. More urgent problem, however, is to check the resurrection of tenant farmers, by means of introducing new laws. And pending such a legislation, some counter-measures must be made to protect the deprived farmers. And the judicial bodies are required to produce new cases. Such cases might be to recognize the vested rights of the farmers over the land they cultivate on lease. Though the depriviation of poor farmers are basically due to the shortfalls of the Law, such judicial decisions might be of much help in improving the present situation until a new law is enacted. Eventually, however, the marginal tams should be consolidated in to cooperative farms in order to do away with their penury and to male them better adapt to the industrial development. In short, the new land reform law should include the following; (1) A cooperative, or a farmers, corporation(which is to be operated by the farmers themselves) shall be entitled to the farm management, (at present, a cooperative, prohibited from engaging in management, there is no law permitting a farmers corporation.) (2) Such a corporation shall be allowed to have its own farm-land and at the same time be exempted from the present limitation to the size of farmland. (3) The individual farm lands in vested in the corporation shall not be transferee to others without the consent of the corporate body, who will be given the priority in purchasing them. (4) The State shall finance the farming of such a corporation, as well as its purchasing of farmlands. (5) The Corperation may not refuse the buying of the farm land should any individual farmer so request. (6) If a member of the cooperation ,rants to quit the membership and to restore his own land instead of receiving the price for it, the corporation shall return has such land to him if its management is not seriously interrupted by that; but if it is, the corporation shall purchase a similar land and return it to him. (7) The lands invested in the Cooperation shall be capitalized; the rent shall act as dividends the members of the corporation be guaranteed to be paid a 20% share dividend of an average out put; it being fixed permanrtly. (8) The Cooperation shall have the right to mortage the lands of its members. (9) The allotment in profit shall be shared in such order as; the first, the rent of land; the second, capital; and the third, labour. (10) All kinds of the tenancy shall be prohibited, and the today's landlords and tenant farmers, be welcomed to join the Cooperative management. (11) A Farm Land Committee shall be reorganized and strengthened; the landlords shall be prohibited from selling off their lands, while those who are not farmers from obtaining the lands. Finally, there is one thing we must be careful. The Cooperation mustbe promoted, but not enforced, by the Government; it must be a voluntary body of farmers.

소양호의 DOC와 POC의 분포

김범철,최광순,김철구,이유희,김동섭,박제철 江原大學校 附設 環境硏究所 1998 環境硏究 Vol.15 No.-

Seasonal and vertical distributions of dissolved and particulate organic carbon were investigated from May 1995 to March 1997 in n deep mesotrophic reservoir, Lake Soyang, POC contentrations at the dam site ranged from 0.1 to 1.8 mgC/L and DOC concentrations ranged from 1.4 to 4.9 mgC/L. POC concentrations in the surface layer were higher in the season of cyanobacterial bloom, July to September. High POC was observed at the depth of 30 to 60m after storm runoff in summer monsoon season. Turbid storm runoff formed intermediate current laden with much particulate materials from terrestrial sources. The vertical and seasonal variation of DOC was smaller than POC. Higher DOC was observed near the lake bottom which implies sedimentation and degradation of much organic detritus at the bottom. The ratio of DOC : POC varied from 2 to 60, and the ratio was lowest in September 1995 when algal density was highest. DOC : POC ratio of the main inflowing river, the Soyang River, varied from 1 to 10, and the ratio was low in storm runoff when the POC concentration was high.

常虛先生의 片貌

鄭範錫 건국대학교 1976 學術誌 Vol.20 No.1