• Korean Journal of Plant Resources
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• v.12 no.2
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• pp.145-151
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• 1999

This study was conducted to know the influence of transplanting dates on yield and chemical component of colored rice varieties at Taejon area in middle part in Korea. The late transplanting led to late heading in which the latest transplanting on June 18 headed on August 9 in Heugiinjubyeo and on August 24 in Heugnambyeo, respectively, which in the safe latest heading date at Taejon area. The highest yield was attained by middle of June transplanting in Heugjinjubyeo, while that for the Heugnambyeo was transplanting from end of May to beginning of June. The relative optical density(ROD) of the pigment measured at 530 nm was higher in Heugjinjubyeo than that of Heugnambyeo. The late transplanting increased the ROD in Heugnambyeo, while later than May 28 decreased the ROD in Heugjinjubyeo. There was a varietal difference in cation contents such as K, Ca, Mg and Fe. The Contents of the former three was not influenced by different transplanting dates, while the Fe content was increased by early transplanting.

• The Journal of Korean Philosophical History
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• no.39
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• pp.115-142
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• 2013

The purpose of this study was to explore the changes of values in Korea focused on the period from liberation in 1945 to industrialization in the late 1970s. Those periods classified into 'Transitional Era' and 'Industrial Era' based on historical events significantly influenced the changes of value system of Korean people or Korean society. In this study, not only main values and right people for society but also the way of changing value system in those periods were suggested by investigating factors of politics, economy and society. The results are as follows : First, main values and right people for society on each period were as follows : In Transitional Era, main values were manners and social norms, and right people for this period were practical intellectuals pursuing the principle of action-oriented truth-and- knowledge-seeking. In Industrial Era, on the other hand, main values were sincerity, diligence, self-help and collaboration, and right people for this period were skilled man having occupational ability which was essential for economic development. Second, lasting value in Transitional Era and Industrial Era was patriotism. The patriotism in early Transitional Era was appealed to nation and people because of the collapse of ruling system and the absence of leaders, however, the patriotism changed to loyalty towards a national leader or seniors after the formation of new ruling system by building nation and electing a leader. On the other hand, the patriotism of Industrial Era was distinctly defined purpose for carrying out national economic policy and overwhelming Democratic People's Republic of Korea with anti-communist spirit and unification will.

• Korea Petroleum Association Journal
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• s.288
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• pp.53-68
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• 2013

지난 호에 일제 강점기의 석유관련 법령의 변천을 소개한데 이어, 이번호에서는 미군정 및 한미석유협정시기의 석유관련 법령의 변천과정을 소개한다. 한미석유협정은 한미경제원조협정중 석유에 관한 내용의 이행을 위하여 1949.1.4 최초로 체결된 이후 1949.10.1, 1955.8.6, 1964.5.12의 3차례 체결되어 모두 4개의 협정시기로 다시 나눌 수 있는데, 이 시기의 석유제품 공급은 미국의 원조에 의존했다. 1964.4월부터 대한석유공사의 정제시설 준공으로 석유제품의 생산 및 공급이 대한석유공사법 및 대한석유공사에 의해 이루어지고, 1970.2월부터는 석유사업법이 시행되는데, 이 때까지의 변천내용을 정리하였다.

• Proceedings of the KAIS Fall Conference
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• 2011.05b
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• pp.858-860
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• 2011

고전주의에서 낭만주의로의 표현방식의 전환은 인간개성 표출에 대한 자유라는 측면에서 그 의미가 크다. 형식이 중요했던 시기는 감정보다 이성적인 면이 발전하게 되고, 인간감정이 우선되는 시기에는 기존형식이라는 틀이 무너지면서 방종에 가까운 표현 방식도 나타나게 된다. 문학이나 음악에서도 특정시기에 필연적으로 등장하게 되는 표현방식이 존재하게 된다. 이 연구에서는 19세기 미국의 낭만주의 문학을 대표하는 에드거 앨런 포우의 작품과 마일즈 데이비스의 20세기 중반 모달재즈의 태동에서 나타난 표현 양식의 변화에서 그 유사점을 찾고, 변화과정상 50년대 후반 모달재즈의 시기를 재즈 낭만주의로 간주한다.

• The Science & Technology
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• v.33 no.11 s.378
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• pp.36-37
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• 2000

포항공대 내에 자리한 벤처기업 제노마인은 지난해 '애기장대'라는 식물에서 계절에 따라 꽃피는 시기를 조절하는 새로운 유전자 자이켄티아를 세계 최초로 발견, 분리에 성공했다. 제노마인 대표인 남홍길 포항공대 교수는 '자이겐티아를 정상적인 식물체에 주입해 꽃피는 시기를 30% 앞당길 수 있는 연구결과가 나왔다"며 자이겐티아를 이용하면 "원하는 시기에 꽃이 피는 화훼류를 만들거나 일년중 특정시점에 수확이 가능한 농작물의 유전공학적 개발에 적용할 수 있다"고 말한다.

• Journal of the Korean Geographical Society
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• v.15
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• pp.57-73
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• 1977

이 글에서는 다음의 내용을 다루었다. 1. 한국도시성장단계의 시대구분, (1) 도시성장의 이론적 배경, (2) 도시성장요인의 지표변화, (3) 도시인구지표의 변화상, (4) 도시성장단계의 시대구분 2. 한국도시의 지리적 변천과정, (1) 제1시기(1789-1930), (2) 제2시기(1930-1945), (3) 제3시기(1945-1960), (4) 제4시기(1960-1975)

• Journal of the Korean Society of Food Science and Nutrition
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• v.38 no.6
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• pp.721-726
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• 2009

The objectives of this study were to analyze mineral contents of three rice varieties (Josangheugchal, Heugjinjubyeo and Dongjinchalbyeo) under three different cultural practices: five transplanting time (May 15, May 25, June 4, June 14, and June 24), five harvest times (30, 40, 50, 60, and 70 days) and N-fertilization levels (0.0, 4.5, 9.0, 13.5, and 18.0 kg/10a). Mineral contents of Josangheugchal were increased by late transplanting time with increased nitrogen level; however, it was not significantly different by harvest time. Heugjinjubyeo did not show significant difference in three cultivations. Mineral contents of Dongjinchalbyeo increased at the transplanting time of May 25 and June 14 and according to late harvest time. Also mineral contents of Dongjinchalbyeo that did not show significant difference except for calcium according to different nitrogen levels.

• Parasites, Hosts and Diseases
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• v.27 no.4
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• pp.231-248
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• 1989

The growth and development of the metacercariae of F. seoulensis cultivated in vitro or on the chick chorioallantois were assessed by comparison with the optimum process of maturation in albino rats and new born chickens. The process of maturation was divided for convenience into six stages: Stage 1 ; cell multiplication, Stage 2; body shaping, Stage 3; separation of genital anlagen, Stage :1 organogeny, Stage 5; gametogony, and Stage 6: oviposition. In Hank's and Tyrode's .solutions, the metacercariae were alive up to 200 days or more at $4^{\circ}C$ without any development. The in vivo maturation process in rats or chicks was as follows: stage 1 from 6 hours; stage 2 from 24 hours; stage 3 from 48 to 72 hours; stage 4 from 3 to 4 days; stage 5 from 4 to 5 days; and stage 6 from 5 to 8 days. Despite unsuccessful infection of the metacercariae to 12 day old chicks, fully mature worms of stage 5 or 6 were recovered from new born chicks (1 to 2 days old), The metacercariae of F. seoulensis grown in vitro were up to stage 3 and no further maturation was observed. Of various media employed, the medium NCTC 109 (Gibco) or NCTC 135(Gibco) supplemented with 20% egg yolk or 20% whole egg macerate or 0.5% yeast was basically required for the earlier development of the fluke. It took 16.1 days(in average) to reach the stage 3 after cultivation. The metacercariae cultivated on the chorioallantoic membranes of 6∼13 day old chick embryo at 37∼38℃ showed their full development up to stage 5 or 6. However, the worms were in general remarkably retarded, compared with those grown in rats or chickens. In the experiments of worm transplant, although the transfer was failed from in vitro culture to in vivo of rats(Per os), the transplants from in vitro culture to the chorioallantois and from the choriollantois to in vivo of rat host were successful with or without development of the transferred worms. In the present study, it was observed that the metacercariae of F, seoulensis can be maintained in vitro media with poor development as well as fully matured in 1 to 2 day-old chicks or on the chorioallantois at a very low rate.

• (The)Study of the Eastern Classic
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• no.41
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• pp.407-444
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• 2010

So far, we morphologically considered which satirized society in the enlightenment period. For this, we first looked into the feature of expletive and then analyzed it centering around Declension. At last, we conclude this subject with argument of the creation time of from the morphological analysis result. Begining with the conclusion, I thought that the origin opinion of the creation time of is right. In priority research focusing on people who major in literature, the creation time of is about 1901 to 1907, and it coincide with the result from morphological consideration of this article. First, at the feature of expletive, the advent of '~ 할 말이면' the expression of the conditional mood helped to estimate the creation time of . Prior literature of the creation time of (around 1910), '~ 작시면' is the corresponding conditional mood expression. but in the new-style fiction around , it change to '~ 말이면' and thereafter '~ 것 갓흐면' or '~' which seems similar to present korean. I analized the record for the feature of expletive. By dividing up with merce miswrite and miswrite from ignorance, we can assume that the Scripter of is not the fictionist. At the feature of declension, the full use of the nominative case marker '-가' was recordable. '-가' had already appeared in early modern korean, but until 1883 '-ㅣ' almost replaced it. However, around period, we could know that '-ㅣ' barely used and mostly use '-가'. From this, I estimated the creation time of is at least after 1883. In conclusion, I want to suggest an opinion that 1900 is proper sectioning time when we divide history of korean to Modern and Present korean based on the discussion of this article.

• Journal of the Korean association of regional geographers
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• v.15 no.3
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• pp.337-350
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• 2009

The phenological change of plants is an indication of local and regional climate change. An increase in temperature due to global warming is manifest in the change of phytophenological events. In this study, trends in the plant phenology and its correlation with air temperature in South Korea were examined using observational data for 18 phenological phases. The spring phenological phases, such as sprouting and flowering, occurred earlier (from 0.7 to 2.7 days per 10-year) during 1945 ${\sim}$2007. while the autumn phases, such as full autumn tinting, moved later (from 3.7 to 4.2 days per 10-year) during 1989 ${\sim}$2007. The correlation between the plant phenology in spring with the air temperature from February to March is relatively high. The warming in the early spring (February March) by $1^{\circ}C$. causes an advance in the spring plant phenology of 3.8 days. The plant phenology in autumn also correlates with the average temperature in October. The autumn plant phenology for a $1^{\circ}C$ increase in October temperature occurs about 3.1 days later.