• 제목/요약/키워드: North Korean plant

검색결과 425건 처리시간 0.032초

온실 내 위치에 따른 온도 환경과 착색단고추 생육과의 관계 (Relation between Temperature and Growth of Sweet Pepper by Growing Areas in Greenhouse)

  • 박수민;김호철;구양규;김상욱;배종향
    • 원예과학기술지
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    • 제30권6호
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    • pp.680-685
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    • 2012
  • 본 연구는 착색단고추 재배온실 내의 위치에 따른 온도 환경 차이가 생육에 미치는 영향을 알아보고자 수행하였다. 지상부의 온도는 중앙부가 북측부보다 일평균 온도가 $1.6^{\circ}C$ 정도 높게 측정되었으며, 근권부의 온도도 중앙부에서 $2.2^{\circ}C$ 높았다. 착색단고추의 초장, 절간수, 경경 등은 온실 내 중앙부에서 북측부보다 유의하게 높았다. 정식12주 후 초장은 중앙부에서 153cm/plant로 북측 127.2cm/plant보다 길었으며, 절간수는 2개 더 많았고, 경경 또한 1.5mm/plant 더 두꺼웠다. 또한 순광합성속도도 중앙부에서 북측부보다 높게 나타났다. 수확된 상품과의 수량도 중앙에서 49.1개/5주로 북측의 40.5개/5주에 비해 20% 정도가 증대되었다. 온실내 위치에 따른 온도 환경 차이는 착색단고추의 생육 및 광합성률에 영향을 주어 생산량에 차이를 나타내는 것으로 판단된다.

한국 해양테러의 실태 및 대응방안 (The Korea's indiscretion in maritime-terrorism and the counter plan)

  • 박준석;박유덕;김기상
    • 한국재난정보학회 논문집
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    • 제3권2호
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    • pp.79-93
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    • 2007
  • With international urgence of terror situation, many methods of terror techniques and skills are appearing and more intense and threatening terror is braking out not only in the air(plane), but also in the sea(ship). Korea is surrounded by 3 sides of sea and is a proud maritime nation that should advance to foreign country through the sea because South Korea and North Korea are confronting. Korea depend on the maritime transportation, 99.7% of exporting, importing material resources. Therefore, acquisition of the marine safety has the great affect on national security and economical life. On the high tension of situation about threat and possibility of maritime terroism, the potential ways of the improvement policy for counter-tactics against big maritime terror are the following. First, we should construct clear and well-organized network for accurate information about maritime terrorism Second, we should have the information of all domestic, foreign passenger's ships Third, national important facilities such as atomic energy plant, thermo-electric power plant, shipyard need policies to manage all emergency situation Fourth, government authorities should improve tactic abilitities by competing with support and budget inside of nation as well as outside of nation. To develop big maritime terror of our country, we will have to hold cooperative training & tactics contest of big maritime terror by cooperating educational industry organization with similar institute, improve the ability of members of big terror and acquire tactics information by excavating and exchanging a new technique through tactics seminar and public hearing.

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한국의 지의류 분포에 관한 정량적 연구 (Quantitative Studies on the Distribution of Corticolous Lichens in Korea)

  • 김준민
    • Journal of Plant Biology
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    • 제17권4호
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    • pp.38-44
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    • 1974
  • The distribution of corticolous lichens had been investigated in the suburb of Seoul in which factories are located densely and Yeosu which located near sea and very few factories are seen in the neighbour. Ten cm point frame was located at random on the trunk of Pinus densiflora, Quercus serrata and Carpinus Tschonoskii from bottom at 0.5m intervals to 8m height of each trees. The occurrence of each species was represented as a percentage of total quadrat frequency and of density. The density of the corticolous lichens was 2.8%, 6.9% and 7.6% at Dongkooneung, Kongneung and Kwangneung apart 15km, 25km and 32km from center of Seoul respectively. In Yeosu district, the occurrence is fairly different from that of Seoul: it is 34.8% and 34.9% at Odongdo and Hoamsan which located within 3km and 5km from the center of Yeosu. The greater frequency of the lichens on the trunk was found at 1~2m height of trees and they were found mostly on the trunk faced south. However, Pertusaria trochophora species occurred more often on the trunk faced east, Graphis scripta on east and north, Parmelia pertusa and Parmelia tinctorum on west side of trunk. Parmelia pertusa increased with increasing height of trees, but Calicium trabinellum and Anzia japonica decreased. Cetraria collata occurred mostly on the middle of above two species. SO2 concentration in the air of Seoul was high enough to eliminate the lichens except Pertusaria trochophora and Graphis scripta.

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Phylogenetic analyses reveals two unrecognized species of Sparganium (Typhaceae) in the Korean Peninsula

  • Gil, Hee-Young;Ha, Young-Ho;Choi, Kyoung Su;Chang, Kae Sun;Choi, Kyung
    • 한국자원식물학회:학술대회논문집
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    • 한국자원식물학회 2018년도 추계학술대회
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    • pp.42-42
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    • 2018
  • Two unrecognized species of Sparganium of Korea were found during the our field expeditions and phylogenetic analyses of specimens deposited in the Herbarium of Korea National Arboretum (KH). S. coreanum H. $L{\acute{e}}v$. was first reported as a new species based on the specimen (Taquet, 2150) collected from Jeju Island. It has been recognized as synonym or infraspecific taxa of S. stoloniferum and S. eurycarpum or even never recognized recently. However, phylogenetic tree showed that S. coreanum is monophyletic and has sister relationship with S. eurycarpum. Furthermore, additional distribution localities were also found by herbarium survey. Morphological characteristics and distribution information of S. coreanum will be discussed. Another Sparganium species found from Mt. Daeam is occurring either as floating or emergent. Although we could not identify this species since lack of any flowers or fruits for two year surveys, phylogenetic analyses results showed that this species belong to the clade of S. glomeratum, which is distributed in high elevation lakes and marshes of Europe, Asia, and North America. Additional survey of morphology and report will be needed.

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Alstroemeria plants and its biotechnological applications

  • Lim, Sung-Soo;Lee, Sang-Il;Kang, Se-Chan;Kim, Jong-Bo
    • Journal of Plant Biotechnology
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    • 제39권4호
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    • pp.219-224
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    • 2012
  • Alstroemeria plants are widely cultivated in many countries especially in Western Europe and North America and popularity has increased in recently due to its long-base life, large variety of colors and low energy requirement during cultivation period. So far, more than 60 species have been released on the commercial market in the world. To meet the demand of consumer and develop the elite Alstroemeria cultivars, conventional breeding including cross-hybridization and selection as well as mutation breeding were used. However, as other important ornamental plants such as lily, rose, carnation and orchids accepted the biotechnological methods, this newly-born approach should be applied and developed an optimized the genetic transformation system. Then, this biotechnological approach can be fused with the conventional breeding methods and thus can be contributed to the production of elite Alstroemeria plants containing agriculturally good genetic traits which are useful for the both farmers and consumers in the future. In this paper, we reviewed the botanical and genetical features of Alstroemeria plants and its biotechnological approaches in the last decades.

Biting of anthropophilic Culicoides fulvithorax (Diptera: Ceratopogonidae), a vector of Mansonella perstans in Nigeria

  • AGBOLADE Olufemi-Moses;AKINBOYE Dora Olufunmilola;OLATEJU Taiwo Monroof;AYANBIYI Oluwatoyin Adepeju;KULOYO Olukayode Olakunle;FENUGA Oluwalolami Oluwaseun
    • Parasites, Hosts and Diseases
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    • 제44권1호
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    • pp.67-72
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    • 2006
  • Anthropophilic Culicoides were investigated in a rural community endemic for Mansonella perstans in Ijebu North area of western Nigeria between December 2003 and October 2004. Three hundred and fifty-nine adults of Culicoides fulvithorax collected by human bait in the morning were dissected for Mansonella perstans larvae, and $1.95\%$of infection rate was found. Seasonal abundance of C. fulvithorax was investigated by monthly biting rates, and showed that higher prevalence was observed in rainy season, with peak in September. Culicoides prevalence was positively correlated with rainfall and relative humidity, but not temperature. Human perceptions on the behavior of these biting midges were determined by interviewing 854 self-selected villagers, of which $86.5\%$ of the interviewees confessed having experienced Culicoides bites. Between 76.5 and $99.1\%$ of the various age groups complained body reactions to Culicoides bites. Itching was the most frequent body reaction. No interviewees associated Culicoides with transmission of any parasitic infections. The results showed need to adequately control Culicoides in the community.

진달래나무의 입지선택에 관한 연구 (A study of the habitat preferences of the azalea, Rhododendron mucronulatum T.)

  • 남영우
    • Journal of Plant Biology
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    • 제13권3호
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    • pp.25-31
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    • 1970
  • The ratio of occurrence of azalea (Rhododendron mucromultum T.) was determined on the north and south facing slopes on a mountain in Koyang county, Kyungi Province. Data was actually recorded at the eight aspects facing N, NE, E, SE, S, SW, W and NW on the mountain. In each of the eight aspects, six 10m transect tapes were placed in parallel directly down the slope, each 1m apart, and fifty 1$m^2$ quadrats were constructed between them. Frequency of the azalea in each of these quadrats was determined by counting the central stumps of the bushes Soil samples were also taken from pits dug in each plot to use for determination of the following: Soil pH, soil moisture loss on ignition, total nitrogen, and available phosphorus. The occurrence rate of azalea on the northern slop e was found to be for higher on the northern slope than on the southern slope. The abundance of azalea on the northern slope was found to be partially correlated with soil moisture(r=0.93; 0.01>p) and the amount of humus in the soil (r=0.04;0.01>p). The content of total nitrogen, soil PH, and available phosphorus in the soil, however, were found to have no evident relationship with the abundance of azalea. The conditions for growth in the species of azalea Rhododendron mucronulatum T'. were generally found to be more favorable on the northern slope.

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A Potent Medicinal Plant: Polygala Tenuifolia

  • Anvi, RANA
    • 식품보건융합연구
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    • 제9권1호
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    • pp.1-9
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    • 2023
  • Polygala Tenuifolia, also described as Yuan Zhi, is a conventional botanic plant found in Korea and China. It's most well- known promise is to improve cognition and guard against mental disorders, cure sputum, anxiety, and sleeplessness, and keep the central nervous system health. The pharmacological aspects of Polygala Tenuifolia's genesis and component compounds reveal the neuroprotective potential in connection to Alzheimer's disease. It contains three herbs: Bokshin, Sukchangpo, and Wongi. P. Tenuifolia's primary ingredients are Xanthone glycosides, Triterpenoid saponins, and Oligosaccharides. Polygalasaponins and Etrahydrocolumbamine are the major components, and they've been widely used for more than a century to relieve mood and psychological illnesses, particularly in North Asian countries such as Korea, China, Japan, and Taiwan. P. Tenuifolia extract eliminates allergic illnesses such as eczema and contact dermatitis by modulating Protein kinase-A and Mitogen-protein kinase-38. In vitro and in vivo studies linking P. tenuifolia root ingredients to a variety of pharmacological effects pertinent to AD show that this species' isolates may function through polyvalency. In great health, people can take up to 250-300 mg per day. It was given in peer-reviewed studies at dosages of 100-150 mg many times each day. There is minimal evidence that it improves verbal memory in experimental animals.

한국산 가는나방 아과에 관하여 (나비목, 가는나방과) (Some Korean species of the subfamily Lithocolletinae (Gracillariidae, Lepidoptera))

  • ;;박규택
    • 한국응용곤충학회지
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    • 제22권3호
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    • pp.213-227
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    • 1983
  • Thirteen species distributed over 3 genera of the subfamily Lithocolletinae are reported from Korea. Of them 8 species are new to the Korean fauna. Two genera, Hyloconis and Chrysaster, are recorded from the Asian continent for the first time. Fore wings of all the species and male and female genitalia of some ones are illustrated. Besides these Korean species, one North American species, Argyromiges ostensackenella Fitcher, 1859, is newly transferred to the genus Chrysoster.

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A Survey of Bioenergy Resources Potential and the Prospect of Cooperation in Yanbian Korean Autonomous Prefecture

  • Kim, Zin-Oh;Oh, Sang-Myon;Lee, Yong-Woo
    • 환경위생공학
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    • 제23권1호
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    • pp.1-15
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    • 2008
  • Yanbian Korean Autonomous Prefecture(YKAP) possesses the potential to become the first testing ground for the North-East Asian Energy Cooperation in renewable energy sector. We found that production of biodiesel from rapeseed and CHP (Combined Heat and Power Plant) project utilizing abundant forest resources are the two main bioenergy development projects which may have further development potential considering the resource endowments and the focus of Chinese governments' current rural development policy. Provision of stable and transparent investment environments and the development of a close cooperation mechanism between Korea and China government are the prerequisite conditions for investments in the sector. Other international institutional agreements, such as CDM, shall be fully utilized for biomass CHP projects.