정식 시기와 적심 횟수가 화단국화의 생장과 개화에 미치는 영향

姚婧超, 정해준, 김동찬, 이진희, 권민훈, 서병기 배재대학교 자연과학연구소 2013 自然科學論文集 Vol.24 No.1

This study was conducted to investigate optimum planting date and pinching times on the growth and flowering of garden chrysanthemum(Dendranthema grandiflorum Ramat.). 3 lines of garden mums were planted on May 16, June 13 and July 11 respectively. As planting date was delayed, all the 3 lines' plant height and plant width was reduced. 09-19-49 line got the biggest plant height and width, followed by 09-11-37 line. And 08-166-02 line was the smallest. In different planting times, the experiment group of May 16 and June 13 got the biggest plant height, plant width and stem diameter. However, in the experiment group of May 16, most of the plants got flattened. The experiment group of June 13 got the best ornamental value, and the ornamental value was reduced in the experiment group of July 11 by the short vegetative growth. 09-19-49 line got the most flowers, while in different planting time, the experiment group of May 16 got the most flowers. 09-11-37 line got the biggest flower diameter. 09-11-37 line and 09-09-51 line were planted in the containers on the rooftop. Each groups were pinched by 1, 2 and 3 times on July 2, July 26 and Aug 16 respectively. There was no effect on plant height, plant width, and stem diameter of 09-09-51 line and 09-11-37 line between 1-time-pinching group and 2-time-pinching group. But 3-time-pinching group was reduced. There was no significance in flower diameter of these two lines but the number of flowers was reduced by more pinching times. Therefore, in this experiment, the groups which were planted on June 13 got the best ornamental value and the recommended planting time is in the middle of June. Furthermore, 2 times of pinching was recommended.

중금속 이온과 질소-황을 포함하는 포단드와의 착물형성에 관한 연구

정징운,이선하,최규성,강동현 慶南大學校 附設 基礎科學硏究所 1997 硏究論文集 Vol.10 No.-

The stability constant, enthalpy, and etropy changes of complexation of heavy metal ions (Zn²*, Cd²*) with podands containing nitrogen-sulfur donors such as tri(phenylthio-2-ethyl)amine (Podand Ⅰ), tri(benzylmercapto-2-ethyl)amine(Podand Ⅱ), and tetra(phenylthio-2-ethyl)ethylenediamine (Podand Ⅲ) have been determined by using potentiometric titration in 95% MeOH at various temperature. We observed the Podand Ⅲ ligand showed the largest protonation constant. The values of protonation constant and stability constant for Zn(Ⅱ), and Cd(Ⅱ) ions among three different ligands were increased as following order, Podand Ⅰ< Podand Ⅱ< Podand Ⅲ. In addition, thermodynamic parameters ΔH and TΔS of Zn(Ⅱ), Cd(Ⅱ) complexes have studied.

조경용 국화 품종 ‘Pansy Ball’과 육성 계통의 적정 식재 밀도

정해준 · 김동찬 · 姚婧超 · 서병기 배재대학교 자연과학연구소 2012 自然科學論文集 Vol.23 No.1

This research was carried out to investigate optimum planting density of landscape garden mum ‘Pansy Ball’ and 5 inbred lines. ‘Pansy Ball’ and 5 inbred lines of garden mums were planted at Pai Chai university campus on April 25, 2011. Plant density was controlled by 1 plant, 2 plants, 4 plants in one plot of 0.4m x 0.5m respectively. Average plant height in 1 plant in one plot was 46.2cm~71.7cm. And the average plant height in 2 plant in one plot was 45.9cm~64.8cm, while 4 plant in one plot was 38.9cm~53.2cm. Also, plant width of 05-18-01, 05-01-01, 09-76-03, and 09-02-02 inbred lines were over 50cm by 1 plant in one plot. However, as the plant height and plant density was high, most of the plants got flattened and the ornamental value was also reduced. We got the ‘Pansy Ball’ and 2 inbred lines 09-76-03, 09-02-02 for proper landscape ground cover plant.

한국인에서 Ataxia Telangiectasia 유전자의 다형성에 대한 연구

김영통,정동준,이정은,이용진,김창진 순천향대학교 교수학습개발센터 2004 Journal of Soonchunhyang Medical Science Vol.10 No.3

Ataxia-telangiectasis(AT) is an autosomal recessive disorder characterized by berebellar ataxia, oulocutaneous telangiectaisa, immune defects, and a predisposition to malignancy. The gene for AT, deginated ATM(ataxia telangiectasia mutated), located on chromosome 11q22-q23, contains 66 exons spanning approximately 150 kb of genomic DNA and encodes a protein of 3056 amino acids. It is sell established that patiens with At have a strong predispositon to malignancy, particularly leukemias and lymphomas. An increase predisposition to malignancy has also been suggested to involve heterozygotes for ATM gene mutations. The genetic bases of carcinogenesis for various cancers in Korea have not been studies in detail and the study on the heterozygosity of AT in Korean population would be necessory. In this study, 150 healthy Koreans were studies for the polymorphism at AT using PCR of exon 39 of AT gene. The result was that 110 persons (73%) were heterozygote for wild and polymorphic type(A1/A2), and 40(27%) revealed homozygous polymorphic type A2/A2. The wild type homozygous tyep A1/A1 was not noted in Korean. Above results suggests that heterozygosity of AT is not infrequent in Koreans, and further studies on the carcinogenetic effects of AT in various cancers in Korea would be necessory.

한국인 직무 스트레스 측정도구의 개발 및 표준화

장세진,고상백,강동묵,김성아,강명근,이철갑,정진주,조정진,손미아,채창호,김정원,김정일,김형수,노상철,박재범,우종민,김수영,김정연,하미나,박정선,이경용,김형렬,공정옥,김인아,김정수,박준호,현숙정,손동국 大韓産業醫學會 2005 대한직업환경의학회지 Vol.17 No.4

Background and Purposes: Over the past three decades, numerous studies performed in Korea have reported that job stress is a determinant risk factor for chronic diseases and work disability. Every society has its own culture and occupational climate particular to their organizations, and hence experiences different occupational stress. An occupational stress measurement tool therefore needs to be developed to estimate it objectively. The purpose of this study is to develop and standardize the Korean Occupational Stress Scale (KOSS) which is considered to be unique and specific occupational stressors in Korean employees. Subjects and Methods: Data were obtained from the National Study for Development and Standardization of Occupational Stress (NSDSOS Project: 2002-2004). A total of 12,631 employees from a nationwide sample proportional to the Korean Standard Industrial Classification and the Korean Standard Occupational Classification were administered. The KOSS was developed for 2 years (2002-2004). In the first year, we collected 255 items from the most popular job stress measurement tools such as JCQ, ERI, NIOSH and OSI, and 44 items derived from the a qualitative study (depth interview). Forty-three items of KOSS, in the second year, were retained for use in the final version of the KOSS by using Delphi and factor analysis. Items were scored using conventional 1-2-3-4 Likert scores for the response categories. Results: We developed eight subscales by using factor analysis and validation process: physical environment (3 items), job demand (8 items), insufficient job control (5 items), interpersonal conflict (4 items), job insecurity (6 items), organizational system (7 items), lack of reward (6 items), and occupational climate (4 items). Together they explained 50.0% of total variance. Internal consistency alpha scores were ranged from 0.51 to 0.82. Twenty-four items of the short form of the KOSS (KOSS-SF) were also developed to estimate job stress in the work setting. Because the levels of the subscales of occupational stress were gender dependent, gender-specific standard norms for both the 43-item full version and the 24-item short form using a quartile for the subscales of KOSS were presented. Conclusion: The results of this study suggest that KOSS might be an appropriate measurement scale to estimate occupational stress of Korean employees. Further and more detailed study needs to be conducted to improve the validity of this scale.

Finite element analysis and axial bearing capacity of steel reinforced recycled concrete filled square steel tube columns

Jing Dong,Hui Ma,Changming Zou,Yunhe Liu,Chen Huang 국제구조공학회 2019 Structural Engineering and Mechanics, An Int'l Jou Vol.72 No.1

This paper presents a finite element model which can simulate the axial compression behavior of steel reinforced recycled concrete (SRRC) filled square steel tube columns using the ABAQUS software. The analytical model was established by selecting the reasonable nonlinear analysis theory and the constitutive relationship of material in the columns. The nonlinear analysis of failure modes, deformation characteristics, stress nephogram, and load-strain curves of columns under axial loads was performed in detail. Meanwhile, the influences of recycled coarse aggregate (RCA) replacement percentage, profile steel ratio, width thickness ratio of square steel tube, RAC strength and slenderness ratio on the axial compression behavior of columns were also analyzed carefully. It shows that the results of finite element analysis are in good agreement with the experimental results, which verifies the validity of the analytical model. The axial bearing capacity of columns decreased with the increase of RCA replacement percentage. While the increase of wall thickness of square steel tube, profile steel ratio and RAC strength were all beneficial to improve the bearing capacity of columns. Additionally, the parameter analysis of finite element analysis on the columns was also carried out by using the above numerical model. In general, the SRRC filled square steel tube columns have high bearing capacity and good deformation ability. On the basis of the above analysis, a modified formula based on the American ANSI/AISC 360-10 was proposed to calculate the nominal axial bearing capacity of the columns under axial loads. The research conclusions can provide some references for the engineering application of this kind of columns.

Culture of a Whole Porcine Liver Ex Situ without Red Blood Cells

( Jing Dong ),( Lingling Xia ),( Hefang Shen ),( Congwen Bian ),( Sujin Bao ),( Ming Zhang ),( Yan Dai ),( Yanhong Xu ),( Qiru Xiong ),( Jianjian Xu ),( Lili Xu ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

Aims: Liver transplantation is an effective approach to end-stage liver disease. Shortage of donor liver and increased waiting time for liver transplantation necessitate the development of an organ culture system by which livers can be cultured and maintained ex situ for a prolonged period of time. The aim of this work is to test whether cell culture condition in vitro could be used to culture whole livers ex situ without the use of erythrocytes. Methods: Eight castrated male land race/farm young porcine livers were exposed to 30 min warm ischemia and 30 min cold perfusion. Livers were isolated and connected to an ex situ liver culture system using a standard culture medium RPMI 1640 supplied with 10% of fetal calf serum and sufficient dissolved oxygen under a normothermic condition for 6 hours. Metabolic biomarkers, bile and urea production, hepatic cell viability, and histology analysis of biopsies were performed and analyzed. Results: Dissociated porcine hepatic cells survived and grew in vitro under the standard RPMI 1640 culture medium. When the same RPMI 1640 medium supplemented with 10% of FCS and sufficient oxygen was used to culture livers ex situ, over 98% of liver cells were viable for at least 6 hours during ex situ whole organ culture based on the results from biochemical assays. Conclusions: Our data demonstrate that the liver culture system established in this work can be used to culture whole livers ex situ in the absence of erythrocytes.

ASIA AND NON-PROLIFERATION AFTER THE COLD WAR: ISSUES, CHALLENGES AND STRATEGIES

( Jing Dong Yuan ) 한국국방연구원 1999 The Korean Journal of Defense Analysis Vol.11 No.1

Video Seamless Splicing Method Based on SURF Algorithm and Harris Corner Points Detection

Dong Jing,Chen Dong,Jiang Shuwen 보안공학연구지원센터 2016 International Journal of Multimedia and Ubiquitous Vol.11 No.4

Development of thermo-sensitive injectable hydrogel with sustained release of doxorubicin: Rheological characterization and in vivo evaluation in rats

( Jing Ji Xuan ),( Yi Dong Yan ),( Dong Hoon Oh ),( Young Keun Choi ),( Chul Soon Yong ),( Han Gon Choi ) 영남대학교 약품개발연구소 2011 영남대학교 약품개발연구소 연구업적집 Vol.21 No.-