• Title/Summary/Keyword: 무습성

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태 생굴(Ostrea circumpicta, Pilsbry 1904)의 보육낭 내 유생관찰

  • 강도형;최광식
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2003.05a
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    • pp.384-385
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    • 2003
  • 대부분의 해산무척추동물의 번식은 정자와 난을 해수중으로 내보내어 체외수정을 통해 부유유생의 시기를 거치는 반면 일부 저서성 무척추동물에서는 체내유생발생 또는 보육보호의 번식습성을 지닌 종들의 생태학적 연구가 보고되고 있다(Strathmann and Strathmann, 1982; Olive, 1985). 이와 같은 번식습성의 차이는 서로 다른 서식환경에 따른 번식전략의 적응기작이라고 보고되고 있다(Levin & B.idges, 1995). (중략)

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건강과 자연농업 제222호

  • Jeong, Jin-Yeong
    • THE HEALTH and ORGANIC FARMING
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    • no.222
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    • pp.1-12
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    • 2006
  • 병술년 새해엔 풍요와 행복이 충만하길/우리나라 고유의 기농산품을 개발하여 세계화에 진력하자/우리의 산야초/토양검정은 친환경적 토양관리의 첫단계/제4회 친환경 유기농박람회 개최/경주시협의회 정기총회 개최/화천군,친환경농업 활성화대책 포럼개최/천안염암대,자연순환형 유기농.축산업의 발전방향 위한 국제 심포지엄 개최/농림부.환경부공동 제2회 친환경농업대상 시상/무항생제 축산물의 생산기술과 전략/우리조상들이 연구한 물이야기/농림부,농업경영컨설팅 사업 대폭 개선/착각하고 있는 잘못된 웰빙/왜 홍콩으로 가야 했나?/식물을 깨워 저항성을 갖게 하자/엽채류 균핵병 방제/친환경 고품질 오이 다수확재배 하려면?/협회 무농약17호/우수농산물코너/1월중 협회 일정 안내/농산물 인증제도 대폭개선 소비자 혼란방지 위해 6종류에서 3종류로/해충의 습성을 이용한 퇴치/12월중 새식구 명단/협회소식/'줌마렐라'뜬다 유기농 먹고 요가 즐기고/친환경 농산물 생산매뉴얼 발간/모르고 먹은 음식,약을 독으로 만들 수 있어요/지표시비

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Ecological Characteristics for each of Plant Types in Peanut (Arachis hypogaea L.) II. Difference of Fruiting Habit for each of Plant Types (땅콩의 초형별 생태적 특성에 관한 연구 II. 땅콩의 초형별 결실습성 차이)

  • 이정일;박용환
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.29 no.3
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    • pp.291-297
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    • 1984
  • The peanut, unlike other plants, has three distinct steps in the reproductive process. These are the flowers, the peg and the fruit. This research was designed in the field to determine the difference of fruiting habit for each of plant types of peanut (Arachis hypogaea L.) in peanut culture limiting region. Eight cultivars representing four plant types, i.e., Virginia, Spanish, Valencia and Shinpung types. Number of pegs per plant produced in order of Spanish, Valencia, Virginia, Shinpung, Virginia type. The Virginia small seed type produced the most pods per plant. The shinpung type showed more percentage of matured pod than other types and early pot-set habit. Distribution of mature pods for each of branch positions to total mature pods occupied 63% on two cotyledonary branchs, 34% on 3rd to 5th branchs, 3% on over 6th branchs. Shinpung type was considered more favorable plant type than other types for breeding of early maturing high yielding variety because of early pot-set and high percentage of mature pod.

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Water Vapor Transport Properties of Nonwoven Batting Materials (부직포 충전재의 수분투파성)

  • Kim, Hui-Suk;Na, Mi-Hui;Kim, Eun-Ae
    • Journal of the Korean Society of Clothing and Textiles
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    • v.22 no.1
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    • pp.72-79
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    • 1998
  • Journal of the Korean Society of Clothing and Textiles Vol. 22, No. 1 (1998) p. 72∼79 The purpose of this study was to investigate the effects of geometrical structure and fiber type on the water vapor transport properties of nonwoven batting materials. Two types of fiber were used such as polyester and wool. Correlation between physical properties of nonwovens and water vapor transport rate was analyzed by Pearson Correlation. Steady and dynamic state water vapor transport properties were measured by absorption, evaporation and cobaltots chloride method respectively. The results were as follows: 1) In geometrical structure, thickness of nonwovens was effected on absorption and evaporation rate and air permeability was more influencing factor on water vapor transport rate than porosity. There were no decreasing of water vapor transport rate in hydrophilic fiber at high relative humudity. 2) The hydrophilicity of fiber affected steady and dynamic state water vapor permeabilities and wool nonwoven showed higher water vapor transport rate than polyester at high relative humidity. 3) Thickness showed higher correlation coefficient with water vapor transport rate than other physical properties of nonwovens.

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건강과 자연농업-제224호

  • Jeong, Jin-Yeong
    • THE HEALTH and ORGANIC FARMING
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    • no.224
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    • pp.1-12
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    • 2006
  • 유기농업연수교육에 등록자 대거운집/유기농학박사 학위수여/우리의 산야초/토양검정은 친환경적 토양관리의 첫단계/"등대영농" 유통센터 개장/제주도지부 2006년도 정기총회/AC닐슨, 전세계 38개국 소비자들을 대상으로 유기농관련 온라인 설문조사 실시/제2차 친환경 농업 육성목표와 방향/회원 영농실태 조사 실시/두가지 비료로 유기농작물의 고품질 다수확 생산을 체계적으로 보다 쉽게 하는 방법/강원도, 4,231억 투입 농업 경쟁력 확보/식물세균병은 왜 난치병인가?/미생물을 이용한 토양병해방제/질산성질소제거/협회무농약12호/3월중 협회 일정 안내/북한 핀텍(PIINTEC)/해충의 습성을 이용한 퇴치/2월중 새식구 명단/협회소식/친환경농산물 직거래장터 활성화/친환경 수산물 연구회 창립/"친환경축산 직불제,분뇨처리 지원과 연계해야"/유기 및 일반 농산물의 품질 비교에 관한 연구/천적동물

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여성사이트의 현황 분석 및 이용 실태에 관한 연구 - 대구지역 거주자를 중심으로 -

  • 유상진;이헌성
    • Proceedings of the Korea Association of Information Systems Conference
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    • 2000.11a
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    • pp.9-16
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    • 2000
  • 여성네티즌들은 남성네티즌과는 다른 성향을 보인다. 그들은 결속력과 전파력이 강하고 익숙한 사이트에서 정보를 찾으려는 습성이 잇다. 그리고 한국의 경우 경제권을 대체로 여성이 쥐고 있기 때문에, 전자상거래의 타켓 또한 남성에서 여성으로 변하고 있는 실정이다. 이에 본 연구자는 Web 비즈니스에 있어서 중요성이 증대되고 있는 여성사이트에 대하여 실증분석 하고자 하였으며, 이를 위해 먼저 기존의 여성사이트들이 어떠한 형태로 이루어져 있는지를 살펴보았다. 또한 일반 사이트들과의 차별성을 두기 위해 시도하고 있는 기능들이나 서비스 등에는 어떠한 것들이 있는지를 알아보았다. 그리고 설문조사를 통하여 10대와 20대들의 여성사이트에 대하여 갖는 성향이나 특성 그리고 이용실태에 관하여 살펴보았으며 그 결과에 따른 여성사이트 활성화 전략을 제시하였다. 마지막으로 설문조사결과는 다음과 같이 나타났다. 첫째, 응답자중 33%만이 여성사이트를 방문해본 경험이 있으며, 그들 중 무응답자를 제외한 33.7%만이 컨텐츠 내용에 만족스러워 하는 것으로 나타났다. 둘째, 성별에 따라 여성사이트 방문경험의 유무는 관련이 없는 것으로 분석된 반면, 관심있는 컨텐츠 분야에 있어서는 차이가 있는 것으로 나타났다. 셋째, 인터넷 사용시간에 따라 여성사이트의 방문경험에 차이가 있는 것으로 나타났다.

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Studies on Flowering Habits and Kernel Yields of Peanuts (Arachis hypogaea L.) (비닐피복재배 땅콩의 개화습성과 수량성에 관한 연구)

  • Byeong-Han Choi;;Jung-Il Lee
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.24 no.4
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    • pp.71-82
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    • 1979
  • Transparent vinyl-mulching cultivation plots heavy-fertilized (6-14-20 kg $10a^{-1}\; of\; N-P_2O_5-K_2O)$ in growing peanuts produced 315-344Kg $10a^{-1}$ of quality kernels through improvement of the low temperature conditions of underground environment during the early growing stage and kernel-filling stage. The yields of which were 82-99 percent higher than that of conventional cultivation plot. The vinyl-mulching cultivation techniques accelerated emergence, young seedling growth, flowering, pod bearing and kernel filling of peanuts in Korea.

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Studies on the Ecological Characteristics for the Plant Types in Peanut (Arachis hypogaea L.) I. Differences of Flowering Habit for the Botanical Types (땅콩의 초형별 생태적 특성에 관한 연구 -제 1 보 초형별 개화습성의 차이-)

  • Lee, J.I.;Park, Y.H.;Park, Y.K.
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.29 no.2
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    • pp.191-197
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    • 1984
  • This study was conducted to investigate the flowering habit for the botanical types of peanut (Arachis hypogaea. L) in cultural limiting region. Eight peanut varieties pertaining to virginia, Spanish, Valencia, Shinpung type were used in this study. Shinpung type, a new erect type was developed at Crop Experiment Station, ORD. Appearance of the first flower of peanut plants is observed at a relatively early growing stage. Number of days to first flower were 41 days under vinyl-mulching while non-mulching culture took 55 days. Number of days to first flower were delayed in order of Valencia, Spanish, Shinpung, Virginia type. Flowering durations were distinguished among botanical types and days of those were Virginia 85-93, Spanish 101-105, Valencia 106-113, Shinpung 82-88 days, respectively. The Spanish and Valencia types produced more flowers than Virginia and Shinpung types. The maximum flowering stage of Shinpung and Virginia types reached early and ceased by one cycle, while Spanish and Valencia types came late and showed maximum stage through the early and late stage during the growth stage. By vinyl-mulching, the maximum flowering stage was shortened by 20 days than that of non-mulching. Distribution of flowers for each of branch positions to total flowers occupied 52-53% in two cotyledonary branchs, 23-27% in 3rd to 5th branchs, 20-25% in over. 6th branchs. Shinpung type was considered more favorable botanical type than the other types for the breeding of early maturing high yielding variety because of shortening of days to first flower, flowering duration and distribution of lower branch of effective flowers.

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Control Methods of Spot Damage by Fruit Sucking Pests on Yuzu (Citrus junos) fruit (유자과실의 흡즙충류에 의한 반점피해 방제에 관하여)

  • 최덕수;김은식;김동관;김규진
    • Korean journal of applied entomology
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    • v.40 no.1
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    • pp.77-82
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    • 2001
  • Flying behavior during nighttime and control methods of fruit sucking pests were investigated in yuzu (Citrus junos) groves at Koheung area from August to November in 1999. Among the 3 kind of bulbs with different color (white, blue and yellow), white bulb attracted the most number of fruit sucking pests . The 93 percent of the moths was attracted from sunset to 24 o\`clock. Main flying time of hemipteriods in early, mid, and late October were from 22 to 04 o\`clock, sunset to 02 o\`clock and sunset to 24 o\`clock, respectively. Their flying time become earlier as the night temperature declines. For control of fruit sucking pests, attraction liquid traps, light traps (100 W) and illumination light bulb were set up in the yuzu groves (1,000 $\m^2$) from the 1 st October to the 3rd November. Attraction liquid was composed of a raw rice wine 2,000 ml+black sugar 100 g+vinegar 100 ml. When established at 3 sites per 1,000 $\m^2$ orchard, attraction liquid trap reduced the number of sucking spots on yuzu fruit to 64% and its attracting effect maintained for 3 weeks after setting-up. Three light traps per 1,000 m2 which turned on from sunset to 02 o\`clock reduced the number of sucking spots by 60% .

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Diet of The Wild boar (Sus scrofa) in Agricultural Land of Geochang, Gyeongnam Province, Korea (경남 거창 농경지 멧돼지(Sus scrofa)의 식이물 분석)

  • Lee, Seong-Min;Lee, Woo-Shin
    • Journal of Korean Society of Forest Science
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    • v.103 no.2
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    • pp.307-312
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    • 2014
  • Wild boar have increased in recent years in Korea where damage to agricultural crops is considered as a social issue. The ecological studies on wild boar are essential for the effective management in the future. During May and December 2012, We collected 79 wild boar stomach samples from culling program implementation to reduce agricultural damage in Geochang County and analyzed stomach contents to figure out wild boar diet habit and which crop was preferred. There was seasonal variation in the diet. Plant foods represented up to 93.5% of the diet and were consumed more frequently than animal foods. Invertebrates occurred with high frequency but were underestimated in dry weight because they are rapidly digested. Agricultural crops consumed comprised mainly chestnuts(33%), rice(33%), and apples(24%). Agricultural crops are also a potentially important food resources for wild boar. The frequency of occurrence of earthworms was 50% of diet. Earthworm consumption generally increased in summer, and then decreased in winter. Our results show that wild boar can be considered an omnivore whose diet consists of plant and animal foods. To reduce wild boar agricultural damages, We have to focus on the prevention effort to rice paddy adjacent to chestnut forest and to apple orchard.