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Electron Paramagnetic Resonance Study of Al-incorporated ZnO:Mn Diluted Magnetic Semiconductors
Jun Kue Park,K.W. Lee,D. M. Choi,Cheol Eui Lee 한국물리학회 2018 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.73 No.12
We have employed electron paramagnetic resonance spectroscopy and magnetization measurements in order to study the effect of Al-incorporation on the magnetic interactions in ZnO:Mn diluted magnetic semiconductors. Al-doping is shown to decrease the antiferromagnetic correlation and to increase the ferromagnetic interaction, which is attributed to the hydrogen-mediated ferromagnetic Mn complexes in our Mn-doped ZnO samples.
Measurement of cross sections for proton-induced reactions on natural Zn
Park, Jun Kue,Jung, Myung-Hwan,Hwang, Yong Seok,Kim, Chorong,Cho, Won-Je,Yang, Sung-Chul Elsevier 2019 Nuclear instruments & methods in physics research. Vol.449 No.-
<P><B>Abstract</B></P> <P>We present the cross sections for the <SUP> nat </SUP> Zn ( p , x ) <SUP> 67 </SUP> Cu and <SUP> nat </SUP> Zn ( p , x ) <SUP> 67 </SUP> Ga reactions within a proton energy range of 47.5–99.2 MeV. We efficiently separated the overlapping gamma-ray spectra of the two isotopes <SUP> 67 </SUP> Cu and <SUP> 67 </SUP> Ga , using an analytical method without radiochemical separation. The present data were compared with previous data from the literature, typically obtained by radiochemical separation before measuring the gamma-ray spectra of the two isotopes. Our results for the two isotopes generally showed greater or smaller values than those reported in the literature, except for some data concerning partial energy ranges, which were in agreement with the literature data. The present data were also compared with the TENDL-2017 library based on the TALYS code.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A developed efficient analytical separation method of two radioisotopes, <SUP>67</SUP>Cu and <SUP>67</SUP>Ga. </LI> <LI> The first data for <SUP>nat</SUP>Zn(<I>p</I>,<I>x</I>)<SUP>67</SUP>Cu reaction obtained by using the analytical separation method. </LI> <LI> The present data being compared with those of the literature and the TENDL-2017 library. </LI> </UL> </P>
김영규(Young Kue Kim),윤규욱(Kue Wook Yoon),손원경(Won Kyeung Sohn),윤준(Jun Yoon),고준성(Joon Sung Ko),전대준(Dae Jun Jeon),안병건(Byoung Kuen An),서재희(Jae Hee Seo) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
A case of metastatic malignant melanoma of ovary with malignant melanoma of skin is rare. The tumor was discovered 17months following excisional biopsy of left hand for malignant melanoma of the skin. Primary ovarian malignant melanomas are extremely rare and are thought to originate in teratomas. Ovarian melanoma without evidence of residual teratoma must be considered metastatic even in the absence of a previously identifiable cutaneous or mucocutaneous lesion. We had experienced a case of metastatic malignant melanoma of ovary and presented with a brief review of literature.
임신 중 자궁부속기 종양의 수술 처치: 복강경 수술과 개복수술의 비교연구
우혁준 ( Hyuk Jun Woo ),김선희 ( Sun Hee Kim ),이인호 ( In Ho Lee ),백준길 ( Jun Kil Baek ),김미라 ( Mi Ra Kim ),김주명 ( Joo Myung Kim ),최규홍 ( Kue Hong Choi ),양재혁 ( Jae Hyug Yang ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.6
목적 : 임신 중 진단된 자궁부속기 종양의 수술적 처치에 있어, 개복수술과 복강경수술을 시행한 군을 비교하여 수술 중 또는 수술 후의 결과를 분석함으로써, 개복수술과 비교하여 복강경수술의 안정성 여부 및 장단점을 알아보고자 한다. 연구 방법 : 2001년 1월부터 2003년 1월가지 삼성제일병원에서 임신 중 자궁부속기 종양에 대한 수술을 시행 받은 2 삼분기 이하의 산모들 51예를 대상으로 하였다. 개복술을 시행한 군과 복강경수술을 시행한 군 간에 수술당시 임신 주수, 수술 소견, 수술 방법, 수술 시간, 출혈량, 입원 기간, 합병증 및 임신결과 등을 비교하였다. 결과 : 가장 많은 조직병리학적 경과는 낭성 기형종 (45%)이었고, 악성종양은 3예 (5.9%)였다. 개복술과 복강경 수술군 간에 자궁부속기 종양의 크기, 수술시간, 수술 전후의 혈색소변화, 분만 주수, 출생 시 태아체중, 1분, 5분 Apar 점수, 조기분만, 기형유무에 있어서 유의한 차이를 보이지 않았다. 복강경수술에서 입원기간이 유의하게 짧았고, 수술시기는 개복수술 보다 이른 주수에서 시행되었다. 결론 : 임신 중 진단된 자궁부속이 종양의 수술적 처치에 있어서 복강경수술은 안전하고 효과적인 수술 방법이다. Objective : To determine the feasibility, safety, advantages and limitations of laparoscopic management of adnexal masses in pregnancy by comparing with laparotomy. Methods : Between Jan 2001 to Jan 2003, 36 laparoscopic procedures and 15 laparotomy procedures were performed in 51 patients with adnexal masses in pregnancy. Operation time, hospital stay, pathologic findings, complications and pregnancy outcome were analyzed in these patients. Results : Most common pathologic finding was mature cystic teratoma (45%) and malignancy of adnexal tumors were 3 cases (5.9%). There were no differences in size of adnexal tumor, operation time, hemoglobin level change after operation, gestational age at delivery, birth weight, Apgar score, preterm delivery and fetal anomaly between the two groups. Hospital stays was shorter and gestational age at operation was earlier in laparoscopy than explolaparotomy. Conclusion : Laparoscopic management of adnexal masses in pregnancy is safe and effective procedure.
손원경 ( Won Kyung Sohn ),윤은숙 ( Eun Suk Yoon ),윤준 ( Jun Yoon ),김영규 ( Young Kue Kim ),윤규욱 ( Kue Wook Yoon ),우영주 ( Young Joo Woo ),현우영 ( Woo Young Hyun ),전대준 ( Dae Jun Jeon ) 대한주산의학회 2002 大韓周産醫學會雜誌 Vol.13 No.3
16번 염색체 장완의 결손은 빈도가 매우 낮은 질환이며 부모로부터 유래된 불균형 전좌에 의한 것과 신생 결손에 의한 경우가 있다. 태아의 구조적 이상은 17%에서 염색체 이상을 동반하므로 임신 제 2삼분기에 시행하는 초음파에서 특징적인 두개골의 형태, 심장 질환, 경부 피부 두께(nuchal fold thickness), 경도의 뇌실 확장 등의 미세한 소견을 확인하여 동반 가능한 염색체 이상을 확인하기 위한 산전 염색체 검사의 기회를 제공하는 계기가 될 수 있다. 저자들은 다발성 선천성 기형을 동반한 태아의 16번 염색체 장완의 13부위에서 장완의 22부위까지의 신생 결손 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. Deletion of the long arm of chromosome 16 is uncommon. The causes of deletion are two: one is unbalanced translocation and the other is de novo deletion. In our case, a baby was born with characteristics of the deletion of the long arm of chromosome 16: distinct craniofacial dysmorphism, mild hydrocephalus, ventriculoseptal defect, coarctation of aorta, short neck, low set, small and posterially rotated ears and shortening of long bones. High resolution GTG and RBG banding analyses revealed a karyotype: 46, XY, del(16)(q13q22) de novo.