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안최란,기효진,진병규,김정균,김석범,조용화,노영철,최용덕,곽재수,최용규,An, Choiran,Ki, Hyojin,Jin, Byeong Kyou,Kim, Jung Kyun,Kim, Sug Bum,Jo, Yong Hwa,Nho, Young Cheol,Choi, Yong Duk,Kwak, Jae Su,Choi, Yong Gyu 항공우주시스템공학회 2008 항공우주시스템공학회지 Vol.2 No.3
We have fabricated pressure sensitive paint films consisting of PtTFPP activators dispersed in fluorinated polymer matrix. This matrix material is unique in its composition and structure. We evaluated the oxygen quenching effects, and thus the pressure sensitivity, of the fabricated films in terms of various processing parameters. Based on the experimental results, we anticipate that a good but new pressure sensitive paint would be presented through further elaboration of the polymer compositions and optimization of the processing conditions.
강지연,김상흠,김훈영,기효진,이미화 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.4
ObjectiveTo elucidate the association between clinical and laboratory characteristics and pituitary magnetic resonance imaging(MRI) abnormalities in young female patients with hypogonadotropic hypogonadism (HH). MethodsWe retrospectively investigated a series of 74 female patients (age range, 14–42 years) with normoprolactinemic HHwho underwent pituitary MRI. Pubertal milestones and hormonal features of patients with small pituitary glands (PGs)and space-occupying lesions were compared with those of patients with normal PGs. ResultsThe overall frequency of abnormal PGs was 35.1%, with space-occupying lesions observed in 8 patients (10.8%),and small PG observed in 18 patients (24.3%). The mean serum gonadotropin level was not different betweenpatients with and without pituitary MRI abnormalities (P>0.05). Space-occupying lesions were not associated withlow gonadotropin levels, type of amenorrhea, or presence of secondary sex characteristics. The frequency of spaceoccupyinglesions was higher in patients with interrupted puberty (25.0%) than in patients who did not go throughpuberty (4.8%) or had a normal puberty (9.8%), but were not statistically significant (P>0.05). Small PG was associatedwith low gonadotropin levels and type of amenorrhea (P<0.05). ConclusionClinically significant space-occupying lesions were not associated with low gonadotropin levels, type of amenorrhea,or presence of secondary sex characteristics. However, the frequency of space-occupying lesions was higher in patientswith interrupted puberty than in patients who did not go through puberty or who with normal puberty.
Obstetrical Outcomes of Amniocentesis or Chorionic Villus Sampling in Dichorionic Twin Pregnancies
김미선,문명진,강석호,정상희,장성운,기효진,김보혜,안은희 대한의학회 2019 Journal of Korean medical science Vol.34 No.18
Background: Under certain situations, women with twin pregnancies may be counseled to undergo invasive prenatal diagnostic testing. Chorionic villus sampling and amniocentesis are the two generally performed invasive prenatal diagnostic tests. Studies comparing procedure-related fetal loss between first-trimester chorionic villus sampling and second- trimester amniocentesis in twin pregnancies are limited. This study aimed to evaluate the procedure-related fetal loss and the obstetrical outcomes of these two procedures, chorionic villus sampling and amniocentesis in twin pregnancies. Methods: The data from dichorionic-diamniotic twin pregnancies on which first-trimester chorionic villus sampling (n = 54) or second-trimester amniocentesis (n = 170) was performed between December 2006 and January 2017 in a single center were retrospectively analyzed. The procedure-related fetal loss was classified as loss of one or all fetuses within 4 weeks of procedure, and overall fetal loss was classified as loss of one or all fetuses during the gestation. The groups were compared with respect to the procedure-related and obstetrical outcomes. Results: The difference in proportion of procedure-related fetal loss rate (1.9% for chorionic villus sampling vs. 1.8% for amniocentesis; P = 1.000) and the overall fetal loss rate (7.4% for chorionic villus sampling vs. 4.7% for amniocentesis; P = 0.489) between the two groups was not significant. The mean gestational ages at delivery were not statistically significant. Conclusion: Both the overall fetal loss rate and the procedure-related fetal loss rate of chorionic villus sampling and amniocentesis in dichorionic twin pregnancies had no statistical significance. Both procedures can be safely used individually.