Misorientation Characteristics at the Growth Front of Abnormally-Growing Goss Grains in Fe–3%Si Steel

Tae‑Young Kim,Tae‑Wook Na,Hyung‑Seok Shim,Yong‑Keun Ahn,Yong‑Kwon Jeong,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.12

Penetrating morphologies at the growth front of abnormally-growing Goss grains in Fe–3%Si steel was examined in view ofthe possibility that they are the two-dimensional section of the solid-state wetting (SSW) along the triple junction line. Toobtain the statistically meaningful data, 102 penetrated grain and 204 penetrating abnormally-growing Goss grain morphologieswere examined. The misorientation angles of penetrating and penetrated grains were measured by electron backscattereddiffraction. Among the 102 examined penetrated grain boundaries, none has low misorientation angles less than 15°,whereas 17.2% of the 204 penetrating grain boundaries have low misorientation angles, and 23.5% of them have coincidencesite lattice boundaries. Besides, boundary energies of penetrating Goss grains, which were estimated from misorientationangles of the three grains in the penetrating morphology, satisfied the energetic condition for SSW along the triple junctionline. These results imply that the abnormal grain growth of Goss grains in Fe–3%Si steel occurs by the mechanism of subboundaryenhanced SSW.

Effect of Asymmetric Hot Rolling on the Texture Evolution of Fe–3%Si Steel

Tae‑Wook Na,Hyung‑Ki Park,박창수,Hyung‑Don Joo,Jong‑Tae Park,Heung Nam Han,Nong‑Moon Hwang 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.6

In Fe–3%Si steel, the hot rolling process affects not only the hot rolling texture but also the primary recrystallization texture. Here, the effect of asymmetric hot rolling was studied by comparing the difference in the texture evolved between asymmetricand symmetric hot rolling. The effect of asymmetric hot rolling on the texture of primary recrystallized Fe–3%Si steel wasalso studied. The symmetric hot rolling of Fe–3%Si steel produces a rotated cube texture at the center but Goss and coppertextures near the surface. Asymmetric hot rolling tends to produce Goss and copper textures even at the center like thetexture near the surface. After primary recrystallization, the dominant texture at the center changes from {001} <210> to{111} <112> and the new texture has a higher fraction of the grains which make the low energy boundary with Goss grainsthan that of symmetric hot rolling.

국내산 당귀의 정유성분 조사

이태항, 홍열, 임흥빈 충북대학교 연초연구소 2008 煙草硏究 Vol.21 No.-

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전자 의료 카드를 위한 보건의료 정보 표준화 연구

박흥식,남승곤,안재억,김현의,김주한,정철규,김태진,이기한 대한의료정보학회 1998 Healthcare Informatics Research Vol.4 No.2

응급의료정보 체계를 위한 전지 의료 카드의 활용방안

박흥식,남승곤,안재억,김현의,김주한,정철규,김태진,이기한 대한의료정보학회 1998 Healthcare Informatics Research Vol.4 No.2

불임환자에 있어서 Chlamydia trachomatis 감염에 관한 고찰

노흥태 충남대학교 의과대학 지역사회의학연구소 1985 충남의대잡지 Vol.12 No.2

Clinical study of Chlamydia trachomatis detection using direct immunofluorescence on infertility was performed on the 54 infertile women and 30 normal control women who visited the department of Obstetrics and Gynecology of Chungnam National University Hospital during the period of 9 months from January to September, 1985. The following results were obtained. 1. Positive rate of Chlamydia trachomatis in normal control women was 13.3%. 2. Positive rate of Chlamydia trachomatis in infertile women was 46.3%, which was significantly higher than normal control women (p<0.05). 3. The prevalence of Chlamydia trachomatis was increased with young age. The most commonly affected age was 20∼24 years. 4. The tubal factor was increased than non tubal factor in etiological analysis for Chlamydia trachomatis.

膣 트리코모나스 및 칸디다症의 臨床統計的 考察

盧興泰 충남대학교 의과대학 지역사회의학연구소 1977 충남의대잡지 Vol.4 No.2

Clinical study on trichomonas & Candida vaginitis was done on the 400 women who visited the Chungnam Hongseung Province Hospital, Chungnam Hongseung Kun Health Center and Chungnam Cheungyeang Kun Health Center Branch during the 6 Month, from April to September 1977, obtaining the following results: 1. In the Prevalence of Trichomonas & Candida infections on each group, pregnancy group was highest prevalence. 2. In relation to the pregnancy, the prevalence of trichornonas and candida infections was 32.8% and 41.9%, respectively. In relation to the duration of pregnancy, first trimester was highest prevalence of 52.3% in Trichomonas, but in candida, prevalence increased as the duration to the oral pill users, the prevalence of trichornonas & Candida infections was 27.4% & 38.7%, respectively. 4. In loop group, the prevalence of trichomonas & candida infections was slightly higher than that of control. 5. Mixed infections was 4.4%. In classfiying the groups, prostitutes group was highest prevalence of 7.5%. 6. The most commonly affected age group for both trichomonas and candida infections was 30∼34 years. 7. The prevalence of trichomonas & candida infections was higher in the lower education group. 8. The prevalence of trichomonas & candida infections with leukorrhea was 28.1% and 37.3%, respectively. 9. The prevalence of trichomonas & candida infections in persons with no subjective symptom was 10.4% and 13.8%, respectively. 10. In diagnostic methods, wet smear & culture was similar results in trichomonas infections, but in candida, culture was higher than wet smear.

알루미늄 切削에서 生成되는 構成刃先의 擧動

全泰玉,朴興植,鄭明眞,金晶坤 동아대학교 공과대학 부설 한국자원개발연구소 1988 硏究報告 Vol.12 No.2

This paper has been carried out ot clarify the behavior of the BUE experimented Aluminium with using tungsten caribide tools. The results obtained are as follow : There was the block that varied suddenly at the initial cutting force. From the point of cutting distance 150㎜ Happened the BUE and the cutting force was the normal state. As share angle is increased, compression coefficient of the chip are increased. Relation between the friction coefficient of chip side and tool rake side can make the modelization studying the BUE size. As cutting speed is increased, chip thickness is decreased.

초음파를 이용한 태아체중 예측

노흥태 충남대학교 의과대학 지역사회의학연구소 1989 충남의대잡지 Vol.16 No.2

Sonographic measurements of biparietal diameter(BPD), head circumference(HC), abdominal circumference(AC), femur length(FL), were made in 56 cases of pregnant women who deliveried within 72 hours of measurement, using real-time systems with 3.5㎒ transducers. Estimation of fetal weight was calculated by application of equation proposed by Shepard et al and Hadlock et al. Actual birth weights were compared with predicted value The results were as followings 1. Correlation between estimated and actual fetal wight was very significant.(P<0.0001) 2. The mean of absolute difference for estimated and actual weight was smallest for equation 2 (BPD, AC, FL) with 170gm and largest for equation 4 (AC, HC, FL) with 208gm. 3. Using each equation, the calculated estimated fetal weight fallen within ten percentile range compared to actual birth weight was highest at equation 3(BPD, AC, HC, FL) for 92.9%. 4. Analysing mean residual between estimated and actual fetal weight by according to weight distribution, 3500-3999gm group showed underestimation. 5. In near term pregnant women, when BPD measurement is inaccruate and sometimes cannot be obtained easily. In this cases, with use of AC and FL to calculated estimated fetal weight which are acceptable and reliable.

폐경기 증후군 환자에서 Cyclofenil의 유용성

노흥태,이창환 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

The postmenopausal period is associated with a significant increase in the incidence of agerelated conditions. It is becoming increasingly clear, however, that some of these conditions, specifically osteoporosis and cardiovascular disease, are related to estrogen deficiency as well as to age. For this reason, gynecologic care of postmenopausal women should adress the issue of hormonal replacement therapy. However, estrogen therapy is often responsible for genital or extragenital side effects. Among non-steroid agents, cyclofenil is known to be useful due to action at the level of the hypophyseal and hypothalamic centers. These action is in reducing the secretion of FSH and restoring normal endorphin, dopamine, and norephinephrine activities, thus favorably affecting the entire post-menopausal neurovegetative symptomatology. The purpose of this study was to investigate the clinical efficacy and safety for cyclofenil administered orally at 200mg daily for 8 consecutive weeks in 30 patients with the postmenopausal symptoms. The results were as follows: 1. The distribution of clinical symptoms in the studied patients prior to treatment was: hot Flush, 100.0%; sweating, 86.7%; fatigue, 70.0%; anxiety, 66.7%; depression, 60.0%; headache, 56.7% sleep disturbance 46.7%, and vaginal burning sensation, 40.0%. 2. The efficacy rate after treatment with cyclofenil was 84.7% in the sweat, 75.0% in the vaginal burning sensation, 71.4% in the sleep disturbance and fatigue, 70.0% in the hot flush, 60. 0% in the anxiety, 41.9% in the headache, and 27.8% in the depression. 3, There was no definite evidence of side effects observed during the study. These data suggest that cyclofenil therapy is effective in reducing the incidence of postmenopausal syndrome.