탄소포화철의 스래그에 의한 탈황속도론

김영홍 대한금속재료학회(대한금속학회) 1980 대한금속·재료학회지 Vol.18 No.1

Slag에 의한 탄소포화철의 탈황속도 기구를 1460℃, CO gas의 환원성 분위기 하에서 조사하였다. Slag로는 SiO₂-CaO-MgO계의 slag가 사용되었으며 탈항속도는 slag의 조성, melt geometry 및 CO gas압력, Si 및 MnO의 첨가량 등을 변화시켜가며 측정하였다. 실험결과에 따르면 탈황반응의 속도는 metal 또는 slag중의 유황의 확산속도에 좌우되는 것이 아니고 metal/slag계면에서의 전기 화학적 반응속도의 지배를 받는 것으로 생각된다. 탈황반응은 세단계를 거쳐 진행된다. 즉 Fe의 Anodic reaction과 CO발생속도에 좌우되는 초기의 가장 신속한 반응단계와 CO발생속도에만 지배를 받는 중간속도의 반응단계 및 SiO₂의 환원반응에 지배를 받는 최후의 가장 완만한 단계를 거쳐 진행된다. The kinetics of desul phurization of carbon saturated iron by CaO-MgO-SiO₂ slag was studied at 1460℃ under CO gas atmosphere varying the slag composition, melt geometry, Si and MnO additions, and ambient pressure. It was shown that the desulphurization reaction is not controlled by either diffusion of sulphur in the metal or the slag but by an electrochemical reaction. Desulphurization takes place in three different reaction stages; the intial fastest stage is dependent anodic reaction of iron transfer and CO evolution, the second medium rate stage is controlled by CO evolution, and the final slowest stage controlled by silica reduction from the silicate slag.

융모성성선자극호르몬 투여가 임신랫드의 황체 및 태아에 미치는 영향

김영홍 慶北大學校農業科學技術硏究所 1990 慶北大農學誌 Vol.8 No.-

임신랫드에 융모성성선자극호르몬을 투여한 후 모체의 황체와 태아에 미치는 영향을 조사하기 위하여 임신랫드에 융모성성선자극호르몬제제인 Profasai 1000(Serona, Switzland) 50 또는 100IU를 임신 4, 8, 12 또는 16일에 각각 투여한 후 임신20일에 부검하여 태아와 모체에 대한 조사를 한 결과를 요약하면 다음과 같다. 1. 황체는 모든 대조군과 HCG투여군에서 그 수가 거의 비슷한 수준이었고 임신8일의 경우에 그 수가 비교적 감소되었다. 2. 태아의 흡수는 임신 4, 8및 12일의 HCG투여군과 임신 12일의 대조군에서 나타났지만 임신4일의 경우가 발생빈도가 현저하게 높았고 임신 12일의 경우는 매우 낮았다. 3. 태아의 체중은 임신4일에 50IU의 HCG투여군에서만 감소되었다. 4. 태아의 골격검사에서 기형발생과 골화의 이상은 인정되지 않았지만 변이는 인정되었다. 변이는 14번늑골만 인정되었으며, 임신 4, 8 그리고 12일의 HCG투여군과 임신8일과 16일의 대조군에서 다양하게(5.26~8.33%) 나타났다. 5. 임신랫드에 HCG를 투여하면 태아의 흡수가 나타날 수 있지만 골격형성 과정에서 반드시 변이가 발생된다고 생각하지 않는다. The present study was designed to determine the effect of HCG administration to pregnant rats on the dam and its fetus including the corpora lutea, the body weight of the fetus, the resorption of the fetus and the malformations of the fetus in skeletal development when a single dose of HCG 50 IU or 100IU on day 4.8.12 or 16 of pregnancy. The results were summarized as follows: 1. Administration of HCG had no effect on the corpora lutea. 2. Fetal resorption was observed in animals treated with HCG on days 4.8 or 12, high incidence being treated with HCG on day 4 of pregnancy. 3. Administration of HCG had no effect on the weight of the fetus except decreasing in it treated with HCG on day 4 of pregnancy. 4. Administration of HCG might be able to induce the skeletal variations but was not the skeletal malformations and abnormal ossification of the fetus. The extra 14 ribs was observed in animals treated with HCG on days 8 and 16 of pregnancy, respectively. 5. It is suggested that HCG administration to pregnant rats was able to induce the fetal resorption and might be able to induce skeletal variations in the fetus.

제주도에 있어서의 개의 내부 기생충에 관한 연구

김영홍 제주대학교 1970 논문집 Vol.2 No.-

This study was undertaken to evaluate the present status of intestinal helmiuthic infections of dig in Cheju-Do, from July 1st through September 30th 1970. The methods employed were Kato's cellophane thick smear technique and zinc sulfate floatation technique in 102 for the prevalence rate of various intestinal helminths. The results are as follow: 1) The poaitive rate of intestinal helminths of any kind was 45.0% among 102. 2) The infection rate of Toxcara canis in 102 was 32.4%, Ancylostoma caninum 9.8%, Trichuris vulpis 4.9%, Spirocerca 1upi 0.9%, Clonorchis sinensis 0.9%

닭 정자의 생사감별을 위한 생체염색법에 관한 연구

김영홍,Kim Young-Hong 대한수의사회 1980 대한수의사회지 Vol.16 No.1

The studies were undertaken with the objective to compare six staining techniques, nigrosineosin, eosin-nigrosin, trypan blue, Congo red-nigrosin, fast green-erythrocin and fast green-eosin and select one of these staining techniques to measure live-dead

임신과 분만에 따른 흰쥐의 혈액내 유리불포화지방산, 인지질, Creatinine 및 Prostaglandin 함량의 변화

김영홍 COLLEGE OF AGRICULTURE KYUNGPOOK NATIONAL UNIVERSI 1985 慶北大農學誌 Vol.3 No.-

This study is designed to evaluate serum free unsaturated fatty acid, phospholipid, creatinine and prostaglandin concentrations to provide normal values for physiological barometers and preliminary information related to these chemical components on the stages of pregnancy and parturition in female rats. Forty female rats are devided into 8 groups. One control group contains 5 intact, nonpregnant female rats and the other 5 pregnancy groups contains each of 5 pregnant rats which are 9, 12, 15, 18 and 21days after pregnancy. The remaining 2 parturition groups contain each of 5 postparturient rats which are 12 and 36 hours after parturition. The results obtained are as follows ; 1. The mean concentrations of free unsaturated fatty acid in serum of the female rats ranges from 6. 47 to 8. 22 ㎎/dl. The level of pregnancy group that is 21days being lower. 2. The mean concentrations of phospholipid in serum of the female rats ranges from 86 to 105㎎/dl. There is no marked difference between all of these groups, especially the levels of 12 days after pregnancy group and 36 hours after parturition group are lower than those of other groups. 3. The mean concentrations of crecatinine in serum of the female rats ranges from 0.64 to 0.84 ㎎/dl. There is no marked difference between all of 8 groups and the levels of 21 days after pregnancy group are higher than those of other groups. 4. The mean concentrations of prostaglandin in blood of the female rats ranges from 324 to 1208 ph/㎖ and increase from 736 pg/㎖(18 days after pregnancy) to maximal levels of 1208 pg/㎖ immediately after parturition, and then decreased progressively. Especially, each mean concentration of prostaglandin on 9, 12, or 15 days after pregnancy and mean concentrations of 5 pregnant groups are lower than those of nonpregnant female rats. 5. It is suggested that serum concentrations of free unsaturated fatty acid, phospholipid and creatinine in female rats are not related to the stages of pregnancy and parturition but prostaglandin concentrations influence the initiation of parturition in this species.

동(銅) 스래그로부터 유가금속의 회수에 관한 연구

金永弘 울산대학교 1992 공학연구논문집 Vol.23 No.2

동(銅) 스래그로부터 유가금속의 회수에 대하여 연구하엿다. 스래그에 5% carbon을 첨가했을 때 1573K의 반응온도에서 carbothermic reduction에 의한 Cu와 Ni의 최대 회수율을 얻을 수 있었다. 그러나 Cr의 회수율은 carbon의 첨가와 온도의 변화에 큰 영향이 없었다. 또한, 5% carbon에 5%의 CaO를 첨가했을 때 Cu와 Ni의 회수율은 크게 증가함을 알 수 있었다. 이러한 결과는 A, A, ICP, XRD, SEM-EDX, SEM-WDX 및 화학분석 등에 의해 관찰하였으며, 본 실험에서는 4시간 반을 후 최대 회수율을 얻을 수 있었다. The recovery of valuable metals was studied with copper slag. It was obtained the most Cu and Ni recovery when 5% carbon added to slag at 1573K by carbothermic reduction. But, carbon addition and increase of temperature has no effect on the recovery of chromium. Also, Cu and Ni recovery was very increased when 5% CaO added to 5% carbon. These results were investigated with A. A, ICP, XRD, SEM-EDX, SEM-WDX and wet chemical analysis etc.. In this study we can get the most recovery after 4hours reaction in copper slag.

副腎皮質에 關聯있는 數種 STEROID-HORMONE의 胃液分泌에 미치는 影響

金永洪 醫藥係社 1960 綜合 醫學 Vol.5 No.8

임신랫드에 투여한 임마혈청성성선자극호르몬이 황체 및 태아에 미치는 영향

金永洪 慶北大學校 1991 論文集 Vol.51 No.-

The present study was designed to determine the effect of PMSG administration to pregnant rats on the dam and its fetus including the corpora lutea, the body weight and resorption of the fetus and the malformations of the fetus in skeletal development when a single dose of PMSG 6.25, 12.5, 25, 50 or 100 IU administered on day 3, 6, 9, 12 or 15 of pregnancy. The results were summarized as follows: 1. A single administration of PMSG on day 3, 6, 9, 12 or 15 resulted in increasing the number of corpora lutea up to day 6, no effect being obtained on day 9, 12 or 15 of pregnancy. 2. A single administration of PMSG on day 3, 6, 9, 12 or 15 resulted in fetal resorption on days 6, 9 and 12 and inhibition of implantation on days 3 and 6 of pregnancy. 3. A single administration of PMSG on day 3, 6, 9, 12 or 15 resulted in decrease in fetal body weight on day 9 or 15 but increase or decrease on day 12 of pregnancy. 4. A single administration of PMSG on day 3, 6, 9, 12 or 15 did not result in the skeletal malformations and variations and abnormal ossifications of the fetus but the extra 14 ribs observed in 3 rats treated with PMSG 25 IU on day 9 and 15 and saline solution on day 12 of pregnancy, respectively. 5. It is suggested that PMSG administration to pregnant rats induced the resorption of the fetus and inhibited the implantation but had no effect on skeletal malformations and variations and abnormal ossifications of the fetus in skeletal development.

요즘세상-경찰의 중국동포에 대한 무원칙한 DNA 체취에 분노하며

김영홍 우리신학연구소 2004 갈라진 시대의 기쁜소식 Vol.- No.643

요즘세상-RFID, 소리없는 추적자

김영홍 우리신학연구소 2004 갈라진 시대의 기쁜소식 Vol.- No.639