Effect of Plant Growth Regulators on Clonal Production through Basal Stem Explant Cultures of a Phalaenopsis Hybrid

Jo,Man-Hyun,Ham,In-ki,Park,Sang-kyu,Seo,Gwan-Seok,Han,Gyu-Heung,Woo,In-Shik 한국자원식물학회 2003 Plant Resources Vol.6 No.2

This study was conducted to develop the clonal propagation technique through in vitro culture using basal stem explants in Phalaenopsis hybrid grown in vitro. The highest frequency of protocorm-like body (PLB) formation was obtained when basal stem explants were cultured on VW medium containing 30g/L sucrose, 500 mg/L activated charcoal, 150 ml/L coconut water, 1 mg/L NAA, 5 mg/L 2iP and 2.5g/L gel rite. PLBs transferred to Hyponex medium were regenerated to plantlets. Plantlets transferred to plastic pots containing spagnum moss were developed and successfully acclimatized under greenhouse. The flower was bloomingly opened in plants regenerated from basal stem explants. The flower was not different from both mother plant and plant induced through clonal propagation of Phalaenopsis hybrid.

Fabrication of functional ZnO nano-structures for optical devices by UV nanoimprint lithography

Han?Byeol Jo,Kyeong?Jae Byeon,Heon Lee 한국표면공학회 2012 한국표면공학회 학술발표회 초록집 Vol.2012 No.11

Effect of In-row Plant Spacing on Growth and Yield of Korean Native Allium wakegi Araki

Jo,Man-Hyun,Ham,In-Ki,Park,Sang-Kyu,Seo,Gwan-Seok,Han,Gyu-Heung,Woo,In-Shik 한국자원식물학회 2003 Plant Resources Vol.6 No.2

Allium wakegi Araki was grown at plant spacings of 5, 10, 15, and 20 cm to determine the effect of planting density on the growth and yield. Allium wakegi Araki plants grown at the 5 cm plant spacing had the lowest bulb diameter and bulb weight, while plants at the lowest density (20 cm spacing) had the highest bulb diameter, bulb number, bulb weight and fresh weight. In general, plants grown at narrower spacings produced significantly smaller bulb diameter and bulb weight, but resulted in the highest yields and plants per hectare and lower fresh weights per plant.

永郎 詩語의 계량적 고찰

조창규,한유석 대한언어학회 2001 언어학 Vol.9 No.2

Jo. Changgyoo & Han, Yuseok 2001. A Statistical study on Youngrng's Poetic Diction, the Linguistic association of Korea Journal A 9(2), 139-158. This study airs to investigate the features of Kim, Ycungrang's poetic diction by way of statistical method The corpus is consist of B5 poem, And the size of the corpus is 471D words and 11,969 syllables. The results I get are as follows, (1) The Local color of the poems of Kim, Youngrang is caused by Kangjin dialect which form B,3 percent rather than wads which are related to nature. (2) Youngang use the more adjectives and adverbs as compared with other poets. The effects of this are descriptive, (Doug-shin University)

Clonal Propagation through Leaf Sheath Culture of Phalaenopsis

Jo,Man-Hyun,Ham,In-Ki,Lee,Mi-Ae,Han,Gyu-Heung,Woo,In-Shik 한국자원식물학회 2002 Plant Resources Vol.5 No.3

This study was conducted to develop the clonal propagation technique through in vitro culture using by leaf sheath explants of Phalaenopsis grown in vitro. The highest frequency of protocorm-like body (PLB) formation was obtained when explants of leaf sheath were cultured on VW medium containing 30g/L sucrose, 500 mg/L activated charcoal, 150 mVL coconut water, 1 mg/L NAA, 1 mg/L 2ip and 2.5 g/L gelrite. The PLB formation rate of VW medium was highest followed by modified Hyponex medium, and lowest in MS medium. Plantlets induced from PLBs transferred to plastic pots including spagnum moss were well developed.

자립생활센터의 중증장애인 고용과 고용지원 서비스 실태

조한진,전정식 한국장애인고용촉진공단 고용개발원 2007 장애와 고용 Vol.17 No.1

본 연구는 중증장애인의 고용 확대를 위해 자립생활센터가 하고 있는 일을 조사하고, 이것이 중증장애인 고용과 관련하여 시사하는 바를 분석해 보고자 하였다. 이를 위하여, 본 연구는 자립생활센터의 중증장애인 고용 실태와 장애인 고용지원 서비스의 실태에 초점을 두었다. 조사는 20개의 자립생활센터에 대한 전자우편 설문과 직접 면접을 통하여 2006년 7월부터 8월까지 2개월 동안 진행되었다. 연구 결과에 따르면, 자립생활센터는 장애인, 특히 중증장애인의 고용에 있어 적극성을 보였다. 자립생활센터에 고용된 중증장애인들의 근속기간도 길게 유지되는 것으로 나타났다. 자립생활센터의 중증장애인들은 근로자로서의 신분을 지니면서 다양한 내용의 직무를 수행하고 있었다. 또한 자립생활센터는 장애인에게 취업 전 지도 및 교육 서비스를 비롯한 고용지원 서비스를 제공하고 있었다. 이에 자립생활센터의 중증장애인 고용과 고용지원을 촉진하기 위한 방안을 제시하였다. This study intended to examine what independent living centers (ILCs) were doing to increase the employment of people with severe disabilities and intended to analyze what the roles of ILCs suggested with reference to their employment. For that purpose, the study focused on the state of employment of people with severe disabilities in ILCs and on the state of employment-support services for people with disabilities. Data collection was conducted for two months from July to August 2006 through e-mail questionnaires to and in-person interviews with 20 ILCs. The findings indicated that ILCs were very active in employing people with disabilities, more particularly people with severe disabilities. Employees with severe disabilities have served in ILCs for a long time. People with severe disabilities in ILCs were carrying out their various duties as employees. Also, ILCs were providing employment-support services, including pre-employment coaching and training services, to people with disabilities. Hereupon, the study came up with several suggestions to promote the employment of people with severe disabilities in ILCs and to expand employment-support services for people with disabilities.

白鼠에 있어서 肝吸蟲感染에 대한 獲得抵抗에 관한 硏究

趙星煥,朱炅煥,林漢鍾 고려대학교 의과대학 1984 고려대 의대 잡지 Vol.21 No.3

The development of acquired resistance in clonorchiasis was studied in rats experimentally infected with Chonorchis sinesis. The induction of acquired resistance was attempted by first exposing adult rats to 15 or 50 metacercariae of C. sinesis from naturally infected Pseudorasbara parva and then treated with praziquantel prior being challenged. The reinfection was performed at 1, 2, 4, and 8 weeks after elimination of flukes. Worm recovery rates and growth of the worms obtained from rats necropsied at 4 weeks after reinfection were compared to those of control group. End point titers of rat's serun were studied by ELISA at the time of reinfection and morphological findings of bile ducts were also studied by the light microscope. In other experiments, rats were infected repeatedly with 5 or 10 metscercariae at 1 week interval for 5 times. Animals were kills 4 weeks after the last exposure and the results were compared to a single infection of 25 or 50 metacercariae. Worm collection was failed in rats challenged with 50 metacercariae at 1 or 2 weeks after treatment. Worm recovery rates were 3.5 and 20.0% in rats reinfected at 4 and 8 weeks respectively after treatment, while 41.5% in control rats. In other experiment, 15.6%, 18.3% and 33.3% in worm recovery rates were obtained in rats, challenged with reinfections at 2, 4, and 8 weeks respectively after treatment of these rats initially infected with 15 metacercariae. Recovery rates were 50.0% in control group. Worm racovered in this experiment were found retarded in growth compared to control group. High end point antibody titers of the rat serum at the time of reinfections were presented by ELISA and it seemed too suppress maturation of the worms. Histopathological recovery of the bile ducts were not remarkable until 4 weeks after treatment and it may be contributed to reinfection as an another protecting factor. Multiple low dose repeated infection showed lower recovery rates compared to high dose single infection. Worm recovery rates of animals infected 5 times with 5 metacercariae were 11.0% and single infection on 25 were 53.0%. That of animals infected 5 times with 10 metacercariae was 13.0% compared to 41.5% of single infection of 50 metacercariae. In conclusion, the data presented in this study indicate that during the course of infection by C. sinesis acquired resistance is induced by preceding infection although complete protection may not be elicited.

한국과 미국의 장애인 고용상태의 분석

조한진 한국장애인고용촉진공단 고용개발원 2006 장애와 고용 Vol.16 No.1

본 연구는 한국과 미국의 장애인의 고용상태와 비장애인의 고용 상태를 비교하였다. 또한, 장애인들 내에서 장애의 종류· 수· 발생시기에 의하여 서로 다른 소집단들의 고용 상태를 비교하였다. 이를 위해 본 연구는 한국의' 2000년도 장애인실태조사'와 미국에서 1999년에 실시된' 1996 SIPP(Survey of Income and Program Participation, 소득 및 프로그램참여 조사)'를 이용하여 자료의 이차분석을 수행하였다. 그 목적은 국제 수준에서 고용 상태에 관한 이해를 제공하는 것이었다. 연구 결과, 장애인의 고용 상태에 있어서 한국과 미국 사이에는 차이점 이외에도 유사점이 있었다. 두 나라의 장애인, 특히 정신지체인 또는 정신장애인은 각각 비장애인과 지체장애인보다 고용 면에서 훨씬 뒤처져 있었다. This study compared the employment status of adults with and wlfhout disabiIities between the Republlc of Korea and the United States. Also, the study compared the employment status of different sub-groups within a larger disability group by types, number, and onsets of disabilities, Secondary analyses of data were conducted utilizing the 2000 Natlonal Disablllty Survey for Korea and the 1996 Survey of Income and Program Participation (conducted in 1999) for the U.S. The intent was to provide a clear understanding of the employment status on an international level. The findings indicated that, besides differences between Korea and the U.S. in the employment status of adults with disabilities, there were similarities between the two countries in this study. In both countries, adults with disabilities, more particularly adults wlth mental retardation or mental disorder, were far behind their counterparts - adults without disabilities and adults with physical impairment, respectively - in terms of employment.

등간격 병진스프링으로 지지되는 단순곡선보의 고유진동수해석

조정래,이용운,윤한익 동의대학교 산업기술개발연구소 2000 産業技術硏究誌 Vol.14 No.-

The transfer matrix method is used to study the influence of the translational spring support on the transverse vibration of the simple curved beam. The translational spring supports are constituted by the middle point and the nine points at regular interval on the curved beam. The influence of the translational spring constants on the natural frequency of the simple curved beam is very much at 1st and 3rd mode and the natural frequency is augmented as increasing of the translational spring constants. Since the amplitude of the curved beam is small at high mode, the translational spring constant has a little influence on the transverse vibration of the simple curved beam. The simple curved beam supported elastically at middle point has high frequency than that supported elastically at nine points at regular interval. If the translational spring constant supporting the simple curved beam become very large, and then since the elastic support is similar to the rigid support, the transverse natural frequencies increase very much at the each mode of the simple curved beam.

적조생물구제농도의 Sodium Hypochlorite (NaOCl)의 노출에 따른 조피볼락 및 바지락의 조직학적 영향

한조희,김영석,허민도,정해진,박관하 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.2

In a previous study by Kim et al. (2000), sodium hypochlorite (NaOCI) has been demonstrated to be effective against algae that cause red tides. To secure the environmental safety of the chemical in practical use, effect of NaOC1, at concentrations. required for algicidal activity, on the histology of rockfish and little neck clam was examined. When the animals were exposed to NaOCI at concentrations of 0.5 or 2 ppm for I hr, there was no exposure-associated histological change in either animal. As the experimental exposure condition was set in consideration of the use, our results provide safety information necessary for practical application to marine fields.