In Vitro Fertilization and Embryo Cleavage in Canine Oocytes

Hae }ung Kim,Sang Ryeul Lee,Sin Hae Park,Sung Hyun Kim,Bong Soo Kim,Dong Hun Yoo,Sin Hae Park,Mi Jung Shin,Jae Wook Kim,Zae Young Ryoo 한국동물생명공학회(구 한국동물번식학회) 2006 Reproductive & developmental biology Vol.30 No.2

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

유전성 구상적혈구증환자에서 Parvovirus B19 감염에 의한 일과성 골수무형성증 1예

박상곤,윤찬영,박치영,정춘해 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.3

Hereditary spherocytosis is a kind of hemolytic anemia caused by defect of RBC membrane and show symptoms such as anemia, jaundice and splenomegaly. The disease become serious problem when the symptom of it become severe after infection and parvovirus B 19 are known to cause transient aplastic crisis in this disease. Human parvovirus B19 is a small, non-enveloped, single-stranded DNA virus. The virus is spread by respiratory droplets, and infects within erythroid progenitor cells, which results in the arrest of erythropoiesis. Erythema infectiosum is the primary clinical presentation linked to parvovirus B19 infection in childhood. The clinical features of this infection in healthy individuals are asymptomatic infection, acute arthritis and transient anemia. But, individuals with a history of hematologic abnormalities, including increased RBC destruction (eg, sickle cell disease, hereditary spherocytosis) or decreased RBC production (eg, iron deficiency anemia), can present with transient aplastic crisis. Patients with congenital or acquired immune deficiencies are at risk of developing chronic infection and lead to pure red cell aplasia. We report the case of transient aplastic crisis due to parvovirus BI9 infection in hereditary spherocytosis.

측정방법에 따른 치과용 수경성 시멘트의 경화시간

박정우,기형춘,변상기,이해형 大韓齒科器材學會 2001 대한치과재료학회지 Vol.28 No.4

Information on setting behavior of luting cements is essential to accomplish successful cementation of dental restoration. The purpose of this study is to investigate the influence of test variables on the setting time of dental water-based luting cements. Six kinds of luting cements were investigated: two zinc phosphate, two zinc polycarboxylate and two glass ionomer cements. Cements were mixed with the standard consistency for luting according to their respective manufacturer's recommendation. Setting time of cements was measured with two test apparatus (penetrating indentor and oscillating rheometer) under one of following environmental conditions (temperature/humidity); 37℃/90%, 23℃/50% and 37℃/20%. The Setting time was recorded as the time elapsed from start of mixing to the time indicated at the ISO specification (9917:1991) or when the oscillation is reduced to 95% of the original width. Setting time of luting cements was decreased with increase in temperature and decrease in humidity, and it was significantly influenced by environmental temperature and humidity. Some cements tested showed significant differences in setting time measured between indentor and rheometer under laboratory environment. Percent water loss of cements was different under various environmental conditions. This was largely arisen at the early stage of setting. Zinc Phosphate was hygroscopic under high humidity. these results indicate that working and setting time should be separately evaluated in office and oral environments, respectively. Oscillating rheometer was useful to investigate setting behavior of dental water-based luting cement. However, control of test environment and sensitivity should be considered in the rheometry.

von Willebrand's diseasee 1예

박치영,모성환,문철호,곽재정,김태종,전용준,박유환,정춘해 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

결식아동의 실태와 특성

박장숙,전진호,김성준,손혜숙,이종태 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Objective : The unprivileged children without lunch(UCWL) has been being markedly increased and becoming one of the social problem in Korea. This study was performed to assist the development of efficient support program through the investigation of the status and characteristics of the UCWL. Methods and Material : Subjects were 104 students sho were receiving the meal aid from the six social welfare facilities and 110 ordinary students of an elementary school in Pusan area. Questionnaire survey was conducted from February to March, 2001. Data was analyzed using SPSS program(ver 10.0). Results : There was no difference in gender and school years' distribution. The phenomenon of family deficient, instability of parents' job, unsatisfaction to the home's atmosphere, ill adaptation to their school life, and be alienated from their colleague were more frequent in UCWL(p<0.05). Impulse of runaway from home and suicide showed no difference, however, the present worries, preference of way for assist showed differences(p<0.05), The majority(88%) of UCWL has been giving the meal and less than on year. The most common way was food stuff(76%) and financial support for school meal program(73%), while the most preferred way was financial support for everyday life(43%). Conclusion : UCWL satisfied and gave thankful mind to the present supports, however, showed negative aspects - like emotional unstability and difficulties in their school life. Therefore, it thought to be needed the touch on the emotional aspects, not only on the formal and economic aids.

BaTiO₃분말 합성에서 반응조건의 영향

박정훈,박상도,남성찬,이해정 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

생성물 수율과 반응성을 고려하여 선정한 원료를 이용하여 수열합성법으로 BaTiO_(3) 미세 분말을 제조하였으며 합성시 반응 원료, 온도 및 시간 변화에 따른 영향을 조사하였다. Ba(NO_(3))_(2)와 TiO_(2)ㆍxH_(2)O를 출발물질로 사용할 경우는 광화제 없이도 80℃부터 BaTiO_(3)가 합성되었다. BaTio_(3)의 합성은 반응혼합물의 pH가 높을수록 유리하였으며 전화율은 반응시간보다는 반응온도에 더 큰 영향을 받았다. 이상의 실험 결과로부터 BaTiO_(3) 입자는 수열합성시 용액 중 OH^(-)기의 친핵 공격에 의한 함수 티타니아의 용해와 Ba이온과의 탈수 반응을 통한 핵생성 및 성장 경로를 통해 합성된다고 제안하였다. BaTiO_(3) fine powder was prepared by hydrothermal synthesis with various precursor materials selected in view of yield and reactivity. The effect of reaction temperature, time and raw material was investigated in the above process. While a(NO₃)₂ and TiO₃·xH_(2)O were used as starting material, it was not possible to prepare BaTiO_(3) without mineralizer, however the same can be synthesized at 80℃ without mineralizer using Ba(OH_(2))·8H₃O and TiO₃·xH₃O. The synthesis of BaTiO₃ was favored by higher pH of the reaction solution and conversion was found dependent on the reaction temperature instead of time. Experimental data suggested that BaTiO₃ seemed to be synthesized hydrothermally through reaction pathway that included dissolution of hydrous titania by nucleophilic attack of OH^(-) group in aqueous medium, nucleation by dehydration between Ba ion and titanium complex dissolved and the growth of nuclei.

한약제 복용으로 인한 연중독 1례

박찬국,김용균,박상호,정춘해,조건국 조선의대 1985 The Medical Journal of Chosun University Vol.10 No.1

이야기를 통한 어휘지도가 유아의 기억에 미치는 효과

박성혜 The English Linguistic Science Association of Kore 2001 English Linguistic Science Vol.6 No.-

The purpose of this study was to determine the possibility of using the English stories in early English vocabulary teaching in Korea in order to help the pupils in developing English vocabulary. The vocabulary learning in using English stories for the kindergarten pupils was designed and introduced in to their regular classes. To study the applicable possibility of the vocabulary teaching by using English stories, six year students of H Kindergarten were randomly selected as the subjects of investigation. These pupils were divided into two classes : the experimental group performed by using English stories, the control group practiced vocabulary drills by using the repetitions for learning of language. The results are summarized as follows . Firstly, the difference in short-term memory ability in both groups are almost the same in two groups. That is meaningful in that short-term memory. Secondly, the difference in long-term memory in both groups are significant and remarkable. That is the experimental group improved the long-term memory ability more successful1y than the control group did. Thirdly, the degrees of interest in both groups are remarkable, too. That means the experimental group got higher marks at the record than the control group. For the more effective application of English stories to the teaching English in Korea some suggestions are required. First, in older to teach English stories effectively, the teacher have to consider the choice of English stories and tasks to be performed in the vocabulary teaching. Second teachers have to design the leveled classroom activities, considering the pupils interests and age. In conclusion, the findings in this study suggest that the using English stories is effective and meaningful to develope the pupils' English learning and interest. In addition, English vocabulary teaching by using English stories is more efficient than vocabulary drills using the simple repetition for the memory of English vocabulary at the Kindergarten. For futuue study, it is necessary that the adequate tasks should be designed and applied in classroom to prove the effects on vocabulary learning. Moreover, I expect the studies of the vocabulary and using English stories at Kindergarten will be extended over a long-term period.

von Willebrand's disease 1예

박치영,모성환,문철호,곽재정,김태종,전용준,박유환,정춘해 朝鮮大學校 附設 醫學硏究所 1995 The Medical Journal of Chosun University Vol.20 No.2

von Willebrand's disease (vWD) is the most common autosomal-dominant inherited disorder resulting from a quantitative or a qualitative defect of von Willebrand factor (vWF). The most diagnostic pattern is the combination of a prolonged bleeding time, a reduction in plasma vWF concentration, a parallel reduction in ristocetin cofactor activity, and reduced factor Ⅷ activity, In this case, ristocetin-induced platelet aggregation data were compatible with that of vWD. Bleeding times were prolonged over 4 minutes, vWF antigen levels were 45%. vWF ristocetin cofactor activities were 0~1% and factor Ⅷ levels were 31%, when compared to the normal control. We report the case of a family with vWD. characterized by a quantitative defect in vWF