Characterization of the European type of maternal lineage evident in extant Jeju native pigs

Byeong‐Woo Kim,In‐Cheol Cho,Moon‐Sung Park,Tao Zhong,임현태,Sung‐Soo Lee,Hee‐Bok Park,Moon‐Suck Ko,Jun‐Heon Lee,Jin‐Tae Jeon 한국유전학회 2011 Genes & Genomics Vol.33 No.2

Using a partial D‐loop sequence of mtDNA, an intensive analysis was conducted of the maternal lineages of Jeju native pigs (JNPs) from Korea. In total, 100 mtDNA sequences were obtained from Asian wild boars (AWBs), European wild boars (EWBs), Asian domestic pigs (ADPs), European domestic pigs (EDPs), and JNPs and were used for phylogeny and network analyses. Two distinct JNP groups - one (JNPA) in the Asian cluster and the other (JNPE) in the European cluster - were identified in the estimated phylogenetic tree and network. The maternal lineage of JNPE was the closest to that of EWB and a clear haplogroup was identified that shared an identical haplotype (hap04) among 15 individuals of JNPE and 2 individuals of EWB. A Landrace and an EWB shared hap03with a JNPE. EWB, Landrace, Large White, and Duroc formed two clear haplogroups with JNPE in a parsimonious medianjoining network analysis, suggesting that an obvious maternal contribution of EDP has occurred in JNPE in recent years. A pair‐wise mismatch analysis also indicated that JNPE may have experienced a sudden population expansion, suggesting a more recent establishment compared with the gradual population expansion of JNPA. The JNPE group therefore should be further evaluated in order to decide whether this group should be culled or accepted into further programs for maintenance of the JNP population as a pure breed.

시판 항생제들의 대추나무빗자루병 치료약제 가능성 비교

박철하,이세표,차병진 충북대학교 농업과학기술연구소 1994 農業科學硏究 Vol.11 No.2

To minimize the trial and error by farmers who have no other choice but to use antibiotics for human-disease control, because no agricultural tetracycline for jujube witches-broom disease is available at this point. therapeutical efficacy of several commercial antibiotics against the disease through trunk injection was evaluated. The efficacy of human tetracyclines in trunk injection of jujube tree for witches-broom therapy varied to some extnet. Tetracyclines for intravenous or subepidermal injection showed the strongest symptom-suppression effect. Those, however, were not practical because of high price. On the other hand, tetracyclines in capsule were much cheaper than the former and can be used practically. For trunk injection, just the powder in capsule should be dissolved in clean water and then filtered through cheese cloth or tissue papaer to remove the sediments unnecessary for trees. Otherwise, the sediment would clog the injection hole and the feeder tube. In this experiment. tetracycline HCl of Glaxo made the least sediment in the solution. In addition, the plastic bottle to contain Korean wine was much cheaper and more practical than the commercial one for tree injection.

개구부가 있는 밀폐공간내 화재의 복합열전달 및 연소가스 분석에 관한 연구

박찬국,추병길,김철 (社團法人)韓國火災·消防學會 1997 한국화재소방학회논문지 Vol.11 No.1

The natural convection and combined heat transfer induced by fire in a rectangular enclosure is numerically studied. The model for this numerical analysis is partially opened right wall. The solution procedure includes the standard k-ε model for turbulnt flow and the discrete ordinates method (DOM) is used for the calculation of radiauve heat transfer equation. In numerical study, SIMPLE algorithm is applied for fluid flow analysis, and the investigations of combustor gas induced by fire is performed by FAST model of HAZARDI program. In this study, numerical simulation on the combined naturnal convection and radiation is car ried out in a partial enclosure fifed with absorbed emitted gray media, but is not considered scattering problem. The streamlines, isothermal lines, average radiation intensity and kinetic energy are compared the results of pure convection with those of the combined convection-radiation, the combined heat transfer. Comparing the results of pure convection with those of the combined convection-radiation, the combined heat transfer analysis shows the stronger circulation than those of the pure convection. Three different location of heat source are considered to observe the effect of heat source location on the heat transfer phenomena. As the results, the circulation and the heat transfer in the left region from heating block are mich more influenced than those in the right region. It is also founded that the radiation effect cannot be neglected in analyzing the building in fire. And as the results of combustion gas analysis from FAST model, it is found that O_2 concentration is decreased according to time. While CO and CO_2 concentration are rapidly increased in the beginning(about 100sec), but slowly decreased from that time on.

통신서비스의 늦은 수요 확산 현상에 관한 연구 : Fax 서비스를 중심으로 Focused on the Fax Markets

임병락,최문기,박명철 한국경영과학회 2002 한국경영과학회지 Vol.27 No.2

Telecommunication services are distinctive in that their adoptions are influenced by network effect resulting in 'the late take-off phenomenon' and the 'critical mass' problem. In this paper we examined, so called, 'the late take-off phenomenon' in the diffusion process of telecommunication services. We compared the parameters of the diffusion process of consumer durables with those of fax services in the US and Korea. By analyzing the parameters of a new diffusion model based on the threshold model proposed by Markus, we found that 'the late take-off phenomenon' resulted from the low heterogeneity of the threshold distribution for the potential adopters. A simulation approach was proposed for the theoretical implication of the 'critical mass' problem in the start-up telecommunications services.

Cryptococcal 뇌막염이 병발된 수막 암종증 1예

안병철,고지영,이현옥,최진영,권오상,박용욱 중앙대부설한국의과학연구소 1990 한국의과학 Vol.22 No.1

스포츠센터 직원의 임금만족 선행요인이 임금만족과 조직유효성에 미치는 영향

정병철,김장환,박진기 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.4

This study aims to find out the individual and structural variables in the determination of the wages of the sports center staffs, to analyze the precedent factors of the wage satisfaction(variables of job inputs, the variables of job characteristics, the comparisons with the objects compared, the variables of the organization characteristics), and to examine the effects of the wage satisfaction(welfare programs, the levels of wages, the increase of wages, the management of wages) on the indexes of the organization efficiency such as the will to leave jobs, the outcomes of jobs, the organizational committment and so on. The materials were analyzed by using the programs of SPSS/PC+11.0 and LISREL 8.30 by means of the covariance structure analysis. The results of the inspection of the hypotheses through these methods of the study and the analyses of the materials are as follows: First, the results of the comparative analyses of the satisfaction in respect to the individual and structural variables show that females, the older groups, and the married groups have higher satisfaction than males, the younger groups and the unmarried groups. And the higher positions produce higher wage satisfaction. The higher schooling and the longer careers produce lower wage satisfaction, whereas, in terms of the salary management, they show higher satisfaction. In terms of the experiences of leaving jobs, the groups with no such experiences show high wage satisfaction, and the groups with experiences of leaving jobs two times show the lowest satisfaction. In terms of the methods to join the companies, the groups scouted show the highest wage satisfaction and the groups employed by public examinations show the lowest wage satisfaction. Second, the analyses of the precedent factors affecting the wage satisfaction show that the higher awareness of the job inputs, the job characteristics, and the comparison factors with the groups compared show the less satisfaction with the levels of wages. And the higher awareness of the factors of the organizational characteristics show the higher satisfaction. The analyses of the effects of the wage satisfaction on the organizational efficiency show that the higher wage satisfaction has a negative relation with the will to leave jobs, and a positive relation with the outcomes of jobs and the organizational committment.

우치의 근관에서 도말층의 존재가 수산화칼슘의 상아질 투과에 미치는 영향

권병구,윤태철,박동수 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.1

포도재배용 봉지제조 기술개발 : 종이의 구조적 특성이 광 투과에 미치는 영향

유병철,이진호,이장호,박종문 충북대학교 첨단원예기술개발연구센터 2000 연구보고서 Vol.5 No.-

포도재배용 봉지제조 기술개발 : 포도 재배용 봉지의 특성 변화와 포도당도 Effect of Grape-Bagging Paper Properties on Grape Saccharinity

유병철,박종문,이영주,윤두훈 충북대학교 한국과학재단 지정 첨단원예기술개발 연구센터 2002 연구보고서 Vol.6 No.-

이 연구는 포도의 생육기간에 사용되는 봉지의 특성이 포도의 생육과 당도에 어떤 영향을 미치는지 알아보고자 수행되었다. 포도의 생장에 영향을 미치는 많은 요소가 있지만 빛의 영향을 가장 많이 받는 것으로 알려져 있다. 그래서 미국과 유럽의 경우 다른 경제적인 이유도 있지만, 포도가 빛에 그대로 노출되도록 봉지를 씌우지 않는 무대재배를 한다. 국내의 경우는 식용 생과의 생산이 목적이기 때문에 포도의 생장기간에 병충해방지 및 과실의 착색효과 및 외관보호 등 여러 목적을 가지고 봉지를 씌워서 재배를 한다. 봉지의 구조에 따라서 포도의 생육과 당도에 영향을 미치게 되므로, 봉지를 만드는 원료인 섬유의 종류와 고해정도를 달리해서 봉지를 제작하여 포도를 생산했다. 실험실에서 제조한 종이로 재배한 포도의 당도가 기존에 사용되던 봉지로 재배된 포도보다 당도가 약 0.7 Brix 정도 높았다. 또한 침엽수 천연섬유와 침엽수 재생섬유, 침엽수와 활엽수 섬유를 혼합하여 만든 종이와 활엽수 섬유로 만든 종이가 빛의 투과성과 동도에 상반된 결과를 보였으며, 봉지가 빛을 많이 흡수할수록 당도가 높음을 알 수 있었다. 봉지내부의 온도변화를 측정한 결과 포도의 생육에 적정한 온도가 있음을 추정할 수 있었다.

면역방사계수법을 이용한 Thyroglobulin 측정시 항 Thyroglobulin 항체의 존재가 미치는 영향

안병철,배진호,정신영,박호용,김정국,하승우,이재태,김보완,이규보 대한내분비학회 2004 Endocrinology and metabolism Vol.19 No.1

연구배경: 혈청 thyroglobulin (Tg)은 옥소전신스캔과 함께 분화갑상선암환자에서 갑상선암 재발에 대한 추적관찰에 매우 예민하고, 중요한 표지자로 임상에서 널리 이용된다. 그러나 많은 수의 분화갑상선암환자는 Tg 항체인 항 Tg 항체를 가지고 있고, 이는 방사면역검사법 (radioimmunoassay) 및 면역방사계수 검사법(immunoradiometric assay)으로 Tg 측정시 영향을 미칠 수 있다. 이에 연자들은 면역방사계수법으로 Tg를 측정할 경우, 항 Tg항체에 의하여 어떤 영향이 생길수 있는지를 알아보고자 하였다. 방법: 이중위치 고상법 (solid phase two-site)법을 이용하는 ELSA-hTg in vivo test (CIS international, Schering, France) 시약을 이용하여 Tg를 측정하였다. Tg과 항 Tg 항체는 검사시약에 포함된 표준용액을 사용하였으며, Tg는 두 가지 농도 (23.5 ng/mL, 62.5 ng/mL)로, 항 thyroglobulin 항체는 세 가지 농도(25U/mL, 50U/mL, 100U/mL)로 이용하였다. Tg가 높게 나타나는 환자의 혈청에 항 Tg 항체가 높게 나타나는 환자의 혈청을 혼합하여 동일한 방법으로 Tg 검사를 시행하였다. 통계학적 분석은 ANOVA와 Scheffe test 및 Quadratic regression modeling을 시행하였다. 결과: 면역방사계수법을 이용한 Tg 측정시 항 thyroglobulin 항체가 존재하는 경우 그 값이 낮게 측정되었다. Tg 농도가 23.5 ng/mL인 표준용액이 항 Tg 항체의 농도가 0, 25, 50 및 100U/mL 경우, 각각 24.5±1.1, 11.8±0.4, 7.7±0.1 및 4.5±0.4ng/mL로 측정되었으며, Tg 농도가 62.5 ng/mL인 표준용액은 각각 65.9±5.7, 36.3±2.2, 23.7±0.7, 및 14.0±1.0 ng/mL로 측정되었다(ANOVA test, p=0.000). 항 Tg 항체에 의한 Tg 측정값의 저하 정도는 항 Tg 항체의 농도에 비례하는 것으로 나타났다 (Quadratic model regression, SigT=0.000). 결론: 분화갑상선암환자에서 항 Tg 항체의 존재는 면역방사계수법을 이용한 혈청 Tg 측정으로 갑상선암 재발을 파악하는데 방해하는 인자로 작용될 수 있으며, Tg 측정시 항 Tg 항체의 측정이 꼭 필요하며, 항 Tg 항체를 가진 분화갑상선암환자에서 Tg 수치를 해석할 경우 세심한 주의가 요구된다. Background: Serum thyroglobulin (Tg) is a valuable and sensitive tool needed in the follow-up of patients with differentiated thyroid cancer (DTC), but antithyroglobulin antibody (Anti-Tg), common in patients with DTC, can interfere with the assay for Tg. In this study, we evaluated the influence of Anti-Tg on the measurement of Tg using the immunoradiometric assay (IRMA). Methods: In using ELSA-hTg in vivo test (CIS international, Schering, France), a solid phase two-site IRMA was used to measure Tg (23.5 ng/mL, 62.5 ng/mL) under the absence or presence of three concentrations of Anti-Tg (25U/mL, 50U/mL, 100U/mL). We also performed Tg measurement using patients serum that was mixed with patients serum containing high Anti-Tg. ANOVA and Scheffe tests were performed to evaluate the effect of Anti-Tg on Tg IRMA, and an inverse regression was made to calculate the level of Tg from measured Tg and used Anti-Tg levels and also to assess the degree of effect of anti-Tg on Tg IRMA. Results: In measuring Tg using the standard solution, the presence of Anti-Tg resulted in a falsely suppressed Tg value. The IRMAs for 23.5ng/mL of the standard Tg solution resulted in 24.5±1.1 ng/mL under no Anti-Tg, 11.8±0.4 ng/mL under 25U/mL of Anti-Tg, 7.7±0.1 ng/mL under 50U/mL of Anti-Tg, and 4.5±0.4 ng/mL under 100U/mL of Anti-Tg. IRMAs 62.5 ng/mL of the standard Tg solution resulted in 65.9±5.7 ng/mL under no Anti-Tg, 36.3±2.2 ng/mL under 25U/mL of Anti-Tg, 23.7±0.7 ng/mL under 50U/mL of Anti-Tg, and 14.0±1.0 ng/mL under 100U/mL of Anti-Tg. (ANOVA test, p=0.000). The degree of suppression of the measured Tg value was positively correlated with the Anti-Tg level (Quadratic model regression, Sig T=0.000). The presence of Anti-Tg also resulted in a falsely suppressed Tg value for the Tg measurement using patient's serum. 2004). Conclusion: The presence of Anti-Tg could consist of the use of Tg as a tumor, therefore Anti-Tg should be measured in all patients diagnosed with DTC. The interpretation of the Tg level must be performed with extreme caution in patients with Anti-Tg (J Kor Soc Endocrinol 19:42∼47, 2004)