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The toxicity of an IGR class insecticide, Diflubenzuron on silkworm, Bombyx mori and abnormal symptoms (IGR계 농약 diflubenzuron의 독성과 누에이상증상)

  • Park, Kyung-Hun;Kim, Byung-Seok;Park, Yeon-Ki;Lee, Hee-Dong;Jeong, Mi-Hye;You, Are-Sun;Sohn, Bong-Hee;Kang, Pil-Don
    • The Korean Journal of Pesticide Science
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    • v.11 no.4
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    • pp.299-304
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    • 2007
  • Surveying, laboratory and field trial were performed to elucidate the causes of non-spinning syndrome of silkworm, Bombyx mori, abnormal symptoms of silkworm instars observed in certain sericultural fanning region. Mortality and growth of silkworm was still influenced by feeding the mulberry leaves sprayed with 10,000 fold diluted solution of standard spray of diflubenzuron WP (25%). Mortality and growth of silkworm fed with diflubenzuron-sprayed mulberry leaves with recommended spray solution were entirely affected even six weeks after spraying irrespective to the instars. Larval period of 5th instar and cocooning duration of silkworm was not affected in case 50m of buffer zone has maintained in near-by orchard field sprayed with diflubenzuron WP (25%). However, survival rate of pupae was not influenced in case 100 m of buffer zone has kept. Insect growth regulating insecticides were required to keep a certain distance of buffer zone when sprayed with water-diluted solution, 100 m from the application site at least in order to prevent contamination of the spraying drift by the chemicals.

Cultivation of Cauliflower Mushroom (Sparassis crispa) Using Coniferous Sawdust-based Media with Barley Flours (보릿가루가 첨가된 침엽수 톱밥을 이용한 꽃송이버섯 재배)

  • Park, Hyun;Lee, Bong-Hun;Oh, Deuk-Sil;Ka, Kang-Hyeon;Bak, Won-Chull;Lee, Hak-Ju
    • Journal of Korea Foresty Energy
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    • v.24 no.2
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    • pp.31-36
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    • 2005
  • Cauliflower mushroom (Sparassis crispa) is an edible mushroom that shows remarkably high contents of $1,3-{\beta}-D-glucan$ compared to other edible mushrooms. The mushroom is known to give high antitumor and immunologic activities, thus the mushroom is recently cultivated in Japan and Korea. However, cultivation methods are being kept in secret or under patents by some companies with complicated procedures. This study was conducted to solve the problem by providing a simple method for the cultivation of cauliflower mushroom. We could produce the mushroom using sawdust-based media of Larix leptolepis, Pinus densiflora and P. koraiensis with addition of barley flours and sugar. The ratio of the sawdust : barley flours : sugar used for this study was 80:20:3 in dry-weight base, and the water content was adjusted as 65%. The productivity was somewhat different among the species of sawdust media and the strains of Sparassis crispa for the cultivation, and the mushroom production reached up to 177g from 650g base(productivity : 27%). Thus, this medium is strongly recommended as a practical cultivation method for cauliflower mushroom. By the way, further study for the determination of adequate concentration of barley flour and the selection of proper strain for each sawdust species is needed.

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Comparison of Fruit Development and Quality Indices According to Blossom Thinning on Early-season 'Hanareum' and Mid-season 'Niitaka' Pears (조생종 '한아름' 및 중생종 '신고' 배의 적화처리에 따른 과실 비대 및 품질 비교)

  • Lee, Ug-Yong;Kim, Yoon-Kyoung;Shin, Il-Sheob;Oh, Kwang-Suk;Jung, Ok-Kun;Chun, Jong-Pil
    • Horticultural Science & Technology
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    • v.33 no.4
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    • pp.486-491
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    • 2015
  • In this study, we evaluated the differences in fruit development and quality indices of fruits subjected to blossom thinning before full bloom in 'Hanareum' and 'Niitaka' pears (Pyrus pyrifolia Nakai). We carried out a thinning treatments at 5 days before full bloom, targeting the blossoms at the 1st and 2nd position (T1) or the blossoms at the 6th and 7th position (T2) from the basal part of the flower cluster in both cultivars. Blossom thinning treatments increased the average fruit weight of early-season Asian pear 'Hanareum' up to 10.5% (T1) and 11.0% (T2) at harvest time (110 days after full bloom). The mid-season 'Niitaka' pear showed increased fruit weight of up to 12.6% (T1) and 16.8% (T2) at harvest time (170 days after full bloom). Moreover, these treatments increased the production rate of bigger sized fruits in both cultivars. Removal of blooms also affected fruit quality indices; the bloom-thinned fruits showed higher soluble solids contents (about $1^{\circ}Brix$) and higher skin color redness ($a^*$) especially in 'Niitaka' pears when compared to the non-thinned controls. Overall, the treatments increased the fruit size and weight as well as fruit quality including soluble solids and skin color. Bloom thinning treatment targeting the 6th to 7th blossom from the basal part of the flower cluster may be recommended as the practical thinning method in Asian pear 'Hanareum' and 'Niitaka'.

Surgical Treatment for Type 11 Distal Clavicle Fracture using Mersilene tape and K-wire (Mersilene tape와 K-강선을 이용한 제 II형 원위부 쇄골 골절의 수술적 치료)

  • Byun, Jae-Yong;Kim, Bo-Hyun;Kang, Shin-Taek;Whang, Chan-Ha;Hong, Chang-Wha;Lee, Bum-Sung
    • Journal of Korean Orthopaedic Sports Medicine
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    • v.5 no.2
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    • pp.123-128
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    • 2006
  • Purpose: Surgical reconstruction is usually indicated for type II distal clavicle fracture due to high rate of nonunion and delayed union. We report the clinical outcome of a surgical technique for type II distal clavicle fracture using Mersilen tape and K-wire. Materials and Methods: From 1999 through 2003, this technique has been used on 11 patients with type II distal clavicle fracture. The procedure consist of fracture reduction with a Mersilene tape, repair of torn coracoclavicular ligament, and K-wire fixation of the fracture fragment. All patients with at least 12 months of complete postoperative follow-up were included for functional and radiographic evaluation. We used simple X-ray and UCLA scoring system and constant scoring system for evaluation at last follow up in OPD. Results: Solid union of the fracture could be achieved at 11 weeks after operation in all patients. All patients could return to the same level of preinjury activity. Good and excellent results were obtained in all patients according to UCLA system. Conclusion: This technique was simple procedure and allowed for stable fixation with early mobilization and early return to work and sports.

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An Investigation of Selection and Transfer Factors on the Admission of Rehabilitation Hospital (재활병원 입원 시 선택 및 전원 요인 조사)

  • Lee, Jae Hong;Kwon, Won An;Lee, Jin Hwan;Min, Dong Ki
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.6
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    • pp.2819-2827
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    • 2013
  • The purpose of his study was to analyze the environmental and the medical factors of prematurely discharged patients in a rehabilitation hospital. The subjects were 107 inpatients. The data were collected using self-report questionnaire and analyzed using the SPSS Win 19.0 program. In result, Firstly, general selection of hospitals was the 'Recommendation' 35.5%, Environmental dissatisfaction factors are Hospital facilities 37.4%. Hospital choice is the highest 'Acquaintances' 23.4%. Second, the lowest group about professionalism, kindness, and description of explanation on satisfaction in survey is group of care workers for the sick. The highest group is physical and occupational therapist. Third, the satisfaction regarding medical procedures of administrative work, waiting time and medical expenses is the highest normal. Hospital facilities in one of the highest factors in environmental dissatisfaction is can be considered as an element of patient departure because of not much number of nervous special hospitals. Medical dissatisfaction factors is the lowest satisfaction of care worker even if those spend much time. this is the focus leaving hospital. Therefore, factors care workers on service satisfaction and dissatisfaction in analysis and problem solving is considered that the need to find ways to improve the quality of service care workers.

Optimum Level of Nitrogen Fertilizer Based on Content of Nitrate Nitrogen for Growing Chinese Cabbage in Green House (시설조건(施設條件)의 배추 재배(栽培) 토양(土壤)에서 질산태질소(窒酸態窒素) 검정(檢定)에 의한 질소실비량(窒素施肥量) 결정(決定))

  • Park, Hyo-Taek;Hong, Soon-Dal
    • Korean Journal of Soil Science and Fertilizer
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    • v.33 no.6
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    • pp.384-392
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    • 2000
  • To establish N fertilizer recommended scheme for the Chinese cabbage cultivation in green house based on the soil test of nitrate nitrogen, relationship among the content of soil nitrate and fertilizer effects and fertilizer N use efficiency were investigated from nine soils which differed amount of nitrate nitrogen from $14mg\;kg^{-1}$ to$226mg\;kg^{-1}$. The amount of nitrate nitrogen in soil showed a positive correlation with the dry weight of chinese cabbage in the plot of no fertilization. When the fertilizer effects were calculated by difference between the plots of fertilization and no fertilization in the dry weight and the amount of N uptake, a negative correlation was obtained between the amount of nitrate nitrogen in soils and the fertilizer effects. There was also a negative correlation between the amount of nitrate nitrogen in soils and fertilizer use efficiency. Recommendation of application rate of nitrogen fertilizer based on content of $NO_3-N$ in soils was evaluated by the regression equation among the content of soil nitrate, fertilizer effects and fertilizer N use efficiency. Incase the content of $NO_3-N$ nitrogen in soil is more than $200mg\;kg^{-1}$, No N fertilization is recommended; However, The standard N fertilization($320kg\;ha^{-1}$) is recommended for the soils with less than $50mg\;kg^{-1}$. For the soils ranged from $50mg\;kg^{-1}$ to $200mg\;kg^{-1}$ in the amount of nitrate nitrogen, an equation has been developed in order to calculate the recommended amount of fertilizer N.

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The Moderating Effect of Service Type on the Customer Delight-Behavioral Intention Relationships (서비스 유형의 조절 효과에 따른 기업의 고객감동과 행동 의도의 관계)

  • Kim, MiJeong;Yoon, Ju Ok
    • Journal of Service Research and Studies
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    • v.9 no.4
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    • pp.81-95
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    • 2019
  • The concept of customer satisfaction is very important issue in the service firms. All service firms should delight theirs customers? Which service contexts creating customer delight results in better positive performance? This study is to examine the moderating effect of service type on the customer delight-behavioral intention relationship. Data from consumers across two distinct service contexts (retail banks and upscale restaurants) were obtained. Using the multiple moderating regression analysis, the proposed hypotheses in this study were tested. The results reveal that customer delight had a greater positive impact on both revisit and referral intention in the hedonic service than the utilitarian service. This study suggests specific service contexts where customer delight strategies generate better desirable results. The customer delight strategy is able to be applied in both hedonic and utilitarian services, but it is more effective to lead customer loyalty in the hedonic service than utilitarian services. Service firms need a strategic approach to customer satisfaction strategies. This study provide strategic implications for service firms to efficiently manage and allocate resources, and can help them in making decisions about establishing and implementing customer satisfaction strategies.

A Comparative Study on Space Organization of Kindergarten in Korea and Japan (한국과 일본 유치원의 공간구성 실태 비교)

  • Park, Sung-Chul;Song, Byung-Joon;Cho, Jin-Il
    • The Journal of Sustainable Design and Educational Environment Research
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    • v.15 no.1
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    • pp.19-29
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    • 2016
  • This study aims to find a direction for desirable space organization in future Korean kindergartens by analyzing the current status of space organization in Japanese kindergartens. This study includes comparisons and analyses of Korean and Japanese curricula, facility standards on the national level and standards of national subsidy, current numbers of kindergarteners and preschoolers, and changes in kindergarten facilities over the last 5 years. Six kindergartens each in Korea and Japan, which were constructed after 2011 or are recommended as being good in space organization and kindergarten planning, are selected. The contents of space organization analysis are 'entry and placement, outdoor space', 'space program,' and 'plan design and organization of unit space'. In conclusion, in terms of space organization, Korean and Japanese kindergartens are very similar to each other. However, Japanese kindergartens have more outdoor space about $9.75m^2$ and lot area about $11.89m^2$ than Korean kindergartens. The extra space was used to educate students in various contents regarding social network and physical activity. Furthermore, in Japan, special spaces such as "atelier classes" and "PTA" were used for various types of education. Based on the results of the study will be developed, such as specific models and guidelines for the improvement of facilities Korea kindergarten.

Application Profile for Multi-Cultural Content Based on KS X 7006 Metadata for Learning Resources (다문화 구성원을 위한 학습자원 메타데이터 응용표준 프로파일)

  • Cho, Yong-Sang;Woo, Ji-Ryung;Noh, KyooSung
    • Journal of Digital Convergence
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    • v.15 no.4
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    • pp.91-105
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    • 2017
  • Korea is rapidly becoming a multicultural society in recent years, and the number of multicultural families in 2015 exceeds 3.5% and 800,000. Also, as international marriage rate exceeds 10% by 2016, the number of multicultural families is expected to steadily increase. This study is a design of a metadata application profile as part of the foundation for providing learning resources and content tailored to the needs and preferences of married immigrant women and multicultural family members who need to adapt to Korean society. In order to verify the necessity of the research, we conducted an in-depth interview by screening consumer groups, and analyzed the relevant international and Korean national standards as de-jure standards for the design of metadata standard profiles. Then, we analyzed the contents characteristics for multicultural members, and organized the necessary metadata elements into profiles. We defined the mandatory/optional conditions to reflect the needs of content providers. This study is meaningful in that the study analyzes the educational needs of married immigrant women and presents the necessary metadata standards to develop and service effective educational content, such as korean-to-korean conversion system, personalized learning contents recommendation service, and learning management system.

Survey on Pesticide Use by Ginseng Growers at Gangwon Farmland in Korea (강원도 인삼재배지 농약 사용 실태)

  • Kang, Hye-Soon;Park, Dong-Sik;Hwang, Yun-Kab;Kim, Song-Mun
    • The Korean Journal of Pesticide Science
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    • v.11 no.3
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    • pp.210-215
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    • 2007
  • This study aims to investigate if the properly use of pesticide in Ginseng farmland at Gangwon-do, Korea. Questionnaire included 36 questions such as control method for plant diseases, pests and weeds and pattern of pesticide use was answered by 271 Ginseng farmers lived in 4 cities and 8 counties at Gangwon-do. Ginseng farmers have noxious plant diseases, insects and weeds such as leaf spot, anthracnose, snail, stem-mining fly, horseweed and hairy crabgrass. To control of these, 35% of farmers relied on various type of pesticides and 31.5% of farmers used pesticides mingling with natural enemy, microorganism and organic materials. Farmers selected the pesticide based on the their own experiences or by recommendation of market dealers and neighbors, resulting in the use of inappropriate pesticides in the Ginseng farmland(78.8 % ). They followed standard dosage of the pesticide from Handbook of Pesticide Application(96.3%). They, however, used the same pesticides from 2 to 5 years(44.1 %). This consecutive use of pesticide could be induced resistance. This survey resulted that study for pesticide resistance and systematic educational program for proper use and selection of pesticide to Gingseng farmers should be conducted in farmland at Gangwon-do, Korea.