• Title/Summary/Keyword: diseases and insects

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A Research Study on The Residents' Awareness of Single Family House Garden -­Focused on Single Family House Garden at Il-san New Town­- (주택 정원에 대한 주민 의식 조사 -­일산 신도시 단독 주택 정원을 중심으로­-)

  • Kim, Dae-Hyun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.5 no.2
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    • pp.39-46
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    • 2002
  • Recently, housing consumers are demanding new types of residential housing and environmentally friendly housing. I think that the related issues and problems can be solved by introducing various types of independent housing. Garden is an important space for single family housing, providing calmness and restfulness etc. Furthermore, it provides a green space for our city. According to the result of this paper, I would like to suggest some important conclusions. 1) Residents in single family housing want sufficiently large garden space and they need good design of planting. 2) They are interested in gardening. They also want to have various ideas and information for gardening and need useful skills to prevent their garden from insects and diseases from the garden maintenance companies. 3) Generally, they want to design their garden for the usage of their relaxation and ornamental enjoyment.

Studies on the Components of Evodia daniellii $H_{EMSLEY}$ in Korea (한국산 오수유성분에 관한 연구)

  • Chung, Bo-Sup
    • Korean Journal of Pharmacognosy
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    • v.1 no.4
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    • pp.119-124
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    • 1970
  • Evodia daniellii $H_{EMSLEY}$, a plant belonging to Rutaceae, is cultivated in Korea and used as a folkmedicine for gastric inflammation, extermination of noxious insects, and headache. The seed oil of this plant also has been used in various diseases, for example, dermatitis, scabies and so forth. From the barks, fruit peels, and seed oil of Evodia daniellii $H_{EMSLEY}$, four crystalline compounds were isolated. Three compounds except one were characterized as methyl sinapate, bergapten, and evodiamine by m.p. determination, elemental analysis, UV, IR, NMR spectra and mass analysis. Even though methyl sinapate was a known synthetic compound, it was not yet reported as a natural product. From the seed oil, unsaponifiable fraction was separated and was analyzed. It was considered to be consisted with sterols, hydrocarbons and tocopherols.

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Antimicrobial effect of chitosan oligosaccharides, prepared under ultrafiltration membrane bioreactor, against Vibrio spp. causing fish diseases

  • Lee, Jehee;Jeon, You-Jin;Heo, Moon-Soo;Lee, Ki-Wan;Song, Choon-Bok;Yeo, In-Kyo;Yang, Byung-Gyoo;Kim, Se-Kwon
    • Proceedings of the Korean Society of Fisheries Technology Conference
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    • 2001.10a
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    • pp.151-152
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    • 2001
  • Chitin, a polymer of N-acetylglucosamine ($\beta$-1,4 linked 2-acetamido-D-glucose), is a cellulose-like biopolymer present richly in the exoskeleton of crustaceans and in cell walls of fungi, insects and yeast. Chitosan is derived from chitin by deacetylation, to different degrees, in the presence of alkali. [l]. Recent studies for chitin and chitosan have been concentrated in bioactivities such as antitumor activity, immuno-enhancing effects, enhancing protective effects against infection with some pathogens in mice, and antimicrobial activeity [2]. (omitted)

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Effects of different diets and temperatures on larval growth of the white-spotted flower chafer, Protaetia brevitarsis (Kolbe) (Coleoptera: Scarabaeidae)

  • Kim, Hong Geun;Park, Kwan-Ho;Lee, Seokhyun;Kwak, Kyu-Won;Choi, Ji-Young
    • International Journal of Industrial Entomology and Biomaterials
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    • v.31 no.2
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    • pp.75-78
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    • 2015
  • The white-spotted chafer, Protaetia brevitarsis (Coleoptera: Scarabaeidae), is an economically important insect in Korea. Traditionally, it has been regarded as a medicine for preventing liver-related diseases and suppressing liver cancer. Recently, this beetle was enlisted as a temporal food ingredient by Korean Ministry of Food and Drug Safety. Therefore, this beetle is focused as a one of the important insects that are commercially reared and sold in Korea. As the economic importance of this beetle is growing, the suitable rearing conditions are needed for more detailed investigation. In this study, we compared three temperature conditions and two food additives, rice chaff and soybean cake, for its effects on the body weight change of third instar larvae of P. brevitarsis. Temperature is a major environmental factor that has tremendous effects on rearing insects. In additions, rice chaff and soybean cake are byproducts of other agricultural activities. Therefore, it is easy to get, and the price is comparatively low. However, they still have meaningful amount of nutrients. With four different kinds of feed and three temperature conditions on the third instar larvae of beetles, the body weight change was tracked for 14 wk. We concluded that 27.5℃ is the optimal temperature to rear the third instar larvae among three temperatures (25, 27.5, and 30℃). Among four different feeds, conventional fermented oak saw dust with rice chaff and soybean cake was the best feed for larval weight gain during 14 wk. However, feed with soybean cake at 30 ℃ was the best condition for rearing P. brevitarsis larvae when temperatures and feeds were compared at the same time.

Potentials for Organic Agriculture in Xinjang, China

  • Wang, Peiwu
    • Proceedings of the Korean Society of Organic Agriculture Conference
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    • 2001.10a
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    • pp.319-321
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    • 2001
  • In general, it is difficult to control weeds, diseases and insects with no chemical material in large scaled cultivation. Particularly, it is nearly impossible for a temperate country with a lot of rain such as Japan or Korea, to make organic agriculture on a large scale. Are there any possibilities to develop a large scaled organic agriculture in the world\ulcorner In Xinjang where is located in the central Asia, established Shihezi Agricultural and Environmental Institute for Arid Area of Central Asia three years ago in Shihezi, Xinjiang, China, for improving crop production in arid area. One of the main objectives is to establish organic agriculture in Xinjiang, with using suitable conditions for agriculture.

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Notes on the Nomenclature of some Microlepidoptera in Korea (I) (한국산 미소 나방류의 학명 변경에 관하여)

  • Park Kyu-Tek
    • Korean journal of applied entomology
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    • v.14 no.4 s.25
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    • pp.227-231
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    • 1975
  • The writer adopted the new correct scientific names of 46 Microlepidoptera previously incorrectly recorded in 'A List of Plant Diseases, Insect Pests and Weeds in Korea,' published by the Korean Society of Plant Protection in 1972 and 'Nomina Animaium Koreanorum Insects,' by the Zoological Society of Korea in 1968.

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Complete genome sequencing of Pseudomonas fluorescens NBC275, a biocontrol agent against fungal pathogens of plants and insects (식물 및 곤충의 곰팡이 병원균에 항균력을 가진 Pseudomonas fluorescens NBC275 균주의 유전체 염기서열)

  • Dutta, Swarnalee;Yu, Sang-Mi;Nagendran, Rajalingam;Jeong, Sang Chul;Lee, Yong Hoon
    • Korean Journal of Microbiology
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    • v.55 no.2
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    • pp.157-159
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    • 2019
  • Pseudomonas fluorescens NBC275 (Pf275) isolated from soil sample collected at riverside of Nakdonggang showed antagonistic activity against fungal pathogens of plants and insects. Here we present complete genome sequence of Pf275. The genome comprises of 6,610,362 bp with GC content of 60.9%, which includes 5,869 predicted protein-coding genes, 16 rRNAs, and 65 tRNAs. Genome analysis revealed gene clusters encoding antimicrobial secondary metabolites such as pyoverdine, 2, 4-diacetylphloroglucinol, and phenazine, which are known to play essential roles in biocontrol of diseases.

A Study on "Dongchunohji(洞天奧旨)" ("동천오지(洞天奧旨)"에 관한 소고(小考))

  • Kim, Ki-Wook;Park, Hyun-Guk
    • Journal of Korean Medical classics
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    • v.22 no.2
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    • pp.85-99
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    • 2009
  • This book was completed in the 33rd year of Gang-hui-gapsul(康熙 甲戌) in the Cheong(淸) dynasty(1694), and was first inscribed in the 55th year of Geonryung(乾隆). In this first edition named 'Daechudangbon(大雅堂本)', his descendant Jinbonghui(陳鳳輝) wrote the postscript. There are also other editions such as 'Ga-gyeong-ganchwihyeondangbon(嘉慶間聚賢堂本)', 'Wimundanggeonsangbon(緯文堂巾箱本)' and 'Guangseo-ganseonseongdangbon(光緒間善成堂本)' Second, this book was called "Oe-gwabirok(外科秘錄)" and used the pen name 'Gibaekchunsasojeon(岐伯天師所傳)'. There are 16 volumes in total. The beginning of volume one, is a drawing of the 14 meridians. Volumes 1$\sim$4 are on the symptoms and treatment of abscesses and sores and ulcers[癰疽瘡瘍]. Volumes 5$\sim$13 are on surgery, dermatology and 156 diseases such as wounds by contusion, sharp objects and insects and beasts[跌撲, 金刃, 蟲獸傷]. Volumes 14$\sim$16 list the internal treatments, external medicine, acupuncture and moxibustion and surgery of sores and ulcers. Third, the book stressed early detection and treatment of diseases, emphasized inner resolving[內消] being cautious about using medicine, and further deepened the syndrome differentiation and treatment[辨證施治] of sores and ulcers[瘡瘍] by dividing fire toxin(火毒) into Eumhwa and Yanghwa(陰火/陽火). Also, it established the cause of sores and ulcers development as the deficiency of Gi(氣) and blood[血] and focused especially on the liver and kidney's involvement in the process. It also asserted that the pathogen[邪] is the tip[標], so one should eliminate and reinforce[攻補] to balance it out. The sore and ulcer surgery[瘡瘍外科] part is mostly based on detoxifying[解毒] and resolving[消散]. Although the meridians were mentioned, they were not emphasized, while moxibustion treatment of sores and ulcers[瘡瘍] were thoroughly analyzed. Also, of all 550 formulas in this book, 90% are experience-based which frequently use Geum-eunhwa(金銀花), Pogong-yeong(蒲公英) and Jahwajijeong(紫花地丁). The usages are unique, and the formulas have good adaptability. The symptoms of the diseases are explained first, followed by according main and sub treatments.

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Development and evaluation of a model for management of plant pests in organic cucumber cultivation

  • Ko, S.J.;Kang, B.R.;Kim, D.I.;Choi, D.S.;Kim, S.G.;Kim, H.K.;Kim, H.J.;Choi, K.J.;Kim, Y.C.
    • Korean Journal of Organic Agriculture
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    • v.19 no.spc
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    • pp.263-266
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    • 2011
  • Crop protection strategies in organic horticulture aim to prevent insect pest and plant disease problems through utilization of non-chemical based control means. In order to develop a model for management of plant diseases and insects in organic cucumber cultivation, we compared efficacies between chemical pesticide spraying system and biological control means in semi-forcing and retarding cucumber cultivation during 2005 and 2006. Conventional chemical spray program using various chemical pesticides was applied 5 - 10 days intervals, while two different non-chemical pesticide application programs using two formulated biopesticides Topseed$^{TM}$ and Q-fect$^{TM}$, Suncho$^{TM}$, and Sangsungje$^{TM}$ (biocontrol agents 1) and using egg-yolk and cooking oil(EYCO), Bordeaux mixture, Suncho$^{TM}$, and Sangsungje$^{TM}$ (biocontrol agents 2) were applied 5 - 7 days intervals during entire cucumber cultivation period. Efficacy of both biocontrol agents programs was effective to comparable to conventional chemical pesitice spray program to control plant diseases such as powdery mildew and downy mildew as well as insect pests such as aphids and thrips which are known as major threats in cucumber organic cultivation. In this study, we established and evaluated an effective and economic crop protection strategy using various biological resources can be used to control plant diseases and pests simultaneously in organic cucumber cultivation field.

Multi-Tasking U-net Based Paprika Disease Diagnosis (Multi-Tasking U-net 기반 파프리카 병해충 진단)

  • Kim, Seo Jeong;Kim, Hyong Suk
    • Smart Media Journal
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    • v.9 no.1
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    • pp.16-22
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    • 2020
  • In this study, a neural network method performing both Detection and Classification of diseases and insects in paprika is proposed with Multi-Tasking U-net. Paprika on farms does not have a wide variety of diseases in this study, only two classes such as powdery mildew and mite, which occur relatively frequently are made as the targets. Aiming to this, a U-net is used as a backbone network, and the last layers of the encoder and the decoder of the U-net are utilized for classification and segmentation, respectively. As the result, the encoder of the U-net is shared for both of detection and classification. The training data are composed of 680 normal leaves, 450 mite-damaged leaves, and 370 powdery mildews. The test data are 130 normal leaves, 100 mite-damaged leaves, and 90 powdery mildews. Its test results shows 89% of recognition accuracy.