연구발표논문초록 : 촉매공학 ( 1 ) ; 우라늄 변환공정 기술현황 ( 핵연료 국산화 계획의 일환 )

장인순 ( In Soon Chang ) 한국화학공학회 1985 추계총회초록집 Vol.- No.-

마그네시아 製造에 關한 硏究 간수, 海水로 부터 水酸化마그네슘 製造

맹중재,장인순,Maeng, Jung-Jae,Chang, In-Soon 대한화학회 1965 대한화학회지 Vol.9 No.1

One of the difficult and time consuming problems in the production of magnesia from sea water is a settling rate of magnesium hydroxide. In this experiments, authors attempted to accelerate its settling rate by addition of various sedimenting agents as C.M.C., Separan and Starch, and sought for optimum calcination temperature for domestic dolomite, as alkali source, mole ratio of dolomite milk to bittern. It is observed through experiments that the small amounts of sedimenting agents, C.M.C., Separan, starch, 20 mg/l, 40 mg/l, 400mg/l, respectively increase the settling rate of magnesium hydroxide by 8 times or more. The following conditions resulted in good yield of magnesium hydroxide from sea water with relatively tolerable calcium oxide contaminated for the magnesium clinker. Calcinating temperature, $1,100{\sim}1,200^{\circ}C$, mole ratio of 10% dolomite milk to magnesium salts in sea water or bittern, 1. 2 : 1.

물, Dioxane-물 및 Ethanol-물의 混合溶媒에서의 Hydrogen Cupferrate의 酸解離常數의 決定

김시중,윤창주,장인순,Kim, Si-Joong,Yoon, Chang-Ju,Chang, In-Soon 대한화학회 1966 대한화학회지 Vol.10 No.3

The glass electrode was empirically calibrated in dioxane-and ethanol-water mixed solvents, by means of which the pH-meter reading could be converted to stoichiometric hydrogen ion concentration. By the potentiometric titration method, the thermodynamic dissociation constants of hydrogen cupferrate (HCup) with variations of ionic concentration in aqueous solution were determined, and by the extrapolation of the constants the new thermodynamic $pK_a$ value, 3.980${\pm}$0.006, at zero ional concentration was obtained. The thermodynamic dissociation constants of HCup in dioxane-and ethanol-water solution were also potentiometrically determined with the changes in composition of organic solvents at 0.01 and 0.05 of the ionic strength(${mu}$) and 25 $^{\circ}C$. The empirical formula of the constants with mole fraction(n) of the organic solvent are as follow: Dioxane-water solution. $pK_a$= 12.96n + 4.10 at ${\mu}$ = 0.01, n = 0.0228∼0.171 $pK_a$= 12.05n + 4.23 at ${\mu}$ = 0.05, n= 0.0228∼0.171 Ethanol-water solution, $pK_a$= 4.0ln + 4.26 at ${\mu}$= 0.01, n= 0.0395∼0.262 $pK_a$= 3.83n + 4.34 at ${\mu}$= 0.05, n= 0.0395∼0.262

Methanol-물 및 2-Propanol-물의 混合溶媒에서의 Hydrogen Cupferrate의 酸解離常數의 決定

김시중,윤창주,장인순,Si-Joong Kim,Chang-Ju Yoon,In-Soon Chang 대한화학회 1966 대한화학회지 Vol.10 No.3

The glass electrode was empirically calibrated in methanol-and 2-propanol-water mixed solvents, by means of which the pH-meter reading could be converted to stoichiometric hydrogen ion concentration. The thermodynamic dissociation constants of hydrogen cupferrate in methanol-and 2-propanol-water solution were potentiometrically determined with the changes in composition of organic solvents at 0.01 and 0.05 of the ionic strength and 25$^{\circ}C$. The empirical formula of the constants with mole fraction (n) of the organic solvent are as follow: methanol-water solution $pK_a$= 2.24n + 4.29 at ${\mu}$ = 0.01 n = 0.0476∼0.642 $pK_a$ = 2.35n + 4.38 at ${\mu}$ = 0.05 n= 0.0446~0.642 2-propanol-water solution $pK_a$= 5.50n + 4.48 at ${\mu}$ = 0.05 n = 0.0253~0.259 The relationships between $pK_a$ of acetic acid, propionic acid and HCup and dielectric constant of some mixed solvents were discussed. It would be considered that the factors effecting $pK_a$ value of weak acid in mixed-solvent are not only dielectric constants but acid-base character and solvation effect of the solvent, etc.

몰리브덴늄 (0)-알카디엔화합물의 합성 및 확인

윤석승,최윤동,장인순,Yun Sock Sung,Choi Yun Dong,Chang In Soon 대한화학회 1990 대한화학회지 Vol.34 No.5

금속원자 반응기를 사용하여 몰리브덴 금속증기와 1,3-butadiene 유도체를 반응시켜서 (${\eta}^4$-CH$_2$CRCR'CH$_2$)$_3$Mo(R, R'= H 또는 CH$_3$)를 합성하였으며, 이 때 생성된 유기금속화합물에 대한 1,3-butadiene 유도체의 메틸치환기 효과에 대하여 논의하였다. 그리고 몰리브덴 금속증기와 다른 몇 가지 알카디엔화합물을 반응시켜서 유기금속화합물이 형성됨을 확인하였으며 이들은 공기 중의 실온에서 쉽게 분해 되었다. 또한 (${\eta}^4$-CH$_2$CCH$_3$CCH$_3$CH$_2$)$_3$Mo와 일산화탄소를 반응시켜서 (C$_6$H$_{10}$)$_2$(CO)$_3$Mo를 합성하였으며 이 화합물의 금속-리간드 결합에 관하여 논하였다. Various tris (${\eta}^4$-diene) molybdenums were easily synthesized by the reaction of various 1,3-dienes and molybdenum metal vapors by using metal atom reactor. The methyl substituent effect of the tris (${\eta}^4$-diene) molybdenum produced were discussed. And some alkadiene-molybdenum complexes which were easily decomposed in the air at room temperature were also formed.(C$_6$H$_{10}$)$_2$(CO)$_3$Mo were synthesized and its molybdenum-diene bond type were discussed.

투과증발법에 의한 방사성폐액의 감용

강영호,권선길,양영석,황성태,장인순 ( Young Ho Kang,Seon Gil Kwon,Yeong Seok Yang,Sung Tai Hwang,In Soon Chang ) 한국공업화학회 1992 공업화학 Vol.3 No.2

저준위 방사성 액체폐기물의 새로운 감용방법으로써 cellulose acetate막을 사용한 투과증발법의 연구가 수행되었다. 실험결과에 의하면 일반적으로 유기물의 분리에 사용되는 투과증발법은 액체폐기물의 감용을 위한 제염효과가 우수하였고, 수분의 증발속도도 저준위 방사성 액체폐기물의 감용을 위해 널리 사용되는 자연증발에 비해 현저히 빨랐다. 또한 주입용액의 조건에 따른 실험결과를 토대로 투과증발특성을 평가하였으며, 투과증발량을 증가시키기 위해 cellulose acetate막의 최적제막조건을 설정하였다. As a promising method for the volume reduction of the low-level liquid waste, the pervaporation process was studied using a cellulose acetate membrane. Experimental results showed that the pervaporation method, usually applied to separation of organic materials, has a good decontamination effect for the volume reduction of liquid waste and the evaporation rate of water in this process was markedly faster than that of natural evaporation method, a wide-used process for the volume reduction of liquid waste. Depending on the feed solution conditions, the pervaporation characteristics were evaluated by the experimental results and the optimum conditions for preparation of the cellulose acetate membrane were established to increase the pervaporation flux through the membrane.

학술발표회 초록 : ( 유동층 ) ; 순환유동층의 배수관과 상승관에 있어 미세분말의 수력학적 특성

최종현(Jong Hyeun Choi),박진호(Jin Ho Park),박장진(Jang Jin Park),정원명(Won Myung Choung),장인순(In Soon Chang),강용(Yong Kang),김상돈(Sang Done Kim) 한국화학공학회 1992 추계학술발표회 Vol.- No.-

일부 중소도시 중학생의 흡연실태

김옥현,장인순,이정희,박경숙 중앙대학교 의과대학 간호학과 간호과학연구소 2000 중앙간호논문집 Vol.4 No.1

This study was done to investigate smoking status, knowledge and attitude and to analyze the factors of smoking by middle school students in middle and small sized cities. This study consists of 1575 middle school students chosen from 4 middle schools in Yosu and Yochon. The researchers collected the data with a structured questionnaire under the students' consent. The collected data was statistically analyzed with SPSS PC + 8.0. The results are as follows ; 1) Smoking rate; The 3.2% of the focus group are current smokers (male 5.0%, female 1.4%) and 11.4% had smoking experiences. The smoking rate of this region was less than another area. The smoking rate was influenced with housing status, having a smoker with the family, and parents' attitude about their childrens' education. Also the satisfaction with school life, the success in schoolwork, a relationship with a member of the opposite sex, and having friends who smoke were found as significant factors in smoking. 2) Smoking status; The 24.0% of smokers and 55.3% of ever smokers began smoking in elementary school. Curiosity was found to be the main factor in the motive of smoking (71.2% of smokers and ever smokers). Also, 29.5% of smokers have smoked regularly for about one year, and 25.0% of smokers said that they experienced irregular smoking. The smoking was found to be an irrelevant factor (51.2%). 53.7% of smokers have smoked 1∼5 cigarettes per day and the 14.3% of smokers have smoked imported tobacco. 42.1% of smokers purchased the tobacco from the stores and 26.3% of smokers received cigarettes from their friends. They have smoked when they are bored (34.2%), and to go along with their friends(18.2%). The reasons for smoking were found as too hard to quit (25.6%), enjoyable taste(20.9%), and being like their friends(10.0%). The fact of smoking were known by the close friends of smokers (51.2%) and by the family (20.9%). 3) Knowledge of smoking; The smokers have unreliable knowledge after smoking and positive attitude about smoking than non-smokers. The 65.1% of smokers showed desire to quit smoking. The reasons to stop smoking were because of influence on health(53.6%) and unhealthy habit (28.6%). However, 34.9% of smokers do not have the desire to quit smoking. The 61.8% of focus group were educated about a smoking cessation program, and the 78.0% of the group expressed the need of a smoking cessation program. 4) Smoking factors; The researchers analyzed the factors using a multi-regression analysis to research the effects of smoking. The coefficient of determination(R^2) about sum of squares regression(SSR) per sum of squares total(SST) is 23.4%, and all variables (smoking friend, been punished about smoking, male friend's smoking, smoking teacher's, general opinion about smoking, and relation of study and smoking, monthly pocket money, knowledge of harmful effects, housing status, and parents' education attitude) were found as significant factors. The overall rate of smoker's in adolescence who is a crucial period, is increasing. This period influences physical growth, mental, and socially harmful effects, and has a large potential of becoming an adult smoker. Therefore, Yosu and Yechon areas should develop an effective policy that fully addresses the factors that contribute to smoking among adolescence specially in middle school students. Teachers should who are engaged in early smoking behavior and try to prevent and educating anti-smoking behavior in schools, and community health center in community and also educated to create a healthy environment. Based on our research result, we recommend the following: 1) The teachers need to educate to address the harmful effect of smoking and prepared to educated "anti-smoking" program systematically at the middle school level. 2) In addition, Community Health Center should develop and continue to support and conduct anti-smoking program, as well as develop diversified programs, videotapes, and informational booklets to distribute to schools to be utilized. In addition, create a special campaign that addresses anti-smoking message through T.V. and other media such as Yoo Seung Joons anti-smoking campaign.

순환식 MSMPR 결정기를 이용한 AUC 제조공정의 시동동특성

장길상,이철수,장인순,박명혜 한국화학공학회 1982 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.20 No.4

特許에 제시된 방법에 따라 連績式 MSMPR 結晶器內에서 AUC를 製造하고 그 始動動特性을 硏究하였다. 一般的으로 定常狀態의 粒度分布에서 成長速度와 核生成速度를 決定하고 Population 收支式과 物質收支式을 利用하면 轉移狀態의 特性을 解析할 수 있으나 本 硏究에서와 같이 二次核生成效果가 중요한 경우에는 核生成速度는 轉移狀態에서 求하여야 한다. 本 硏究에서는 이들 成長速度와 核生成速度를 決定하고 이들을 使用하여 始動動特性을 解析하여 實驗値와 比較하였다. AUC(Ammonium Uranyl tri-Carbnate) was produced in a recirculaton MSMPR(Mixed Suspension Mixed Product Removal) crystallizer by reacting uranium solution with ammonia and CO₂, and the start-up dynamics for the precipitation was studied. Generally kinetic equations determined from the steady state crystal size distribution are used with the population balance equation and the mass balance equation to give the transient characteristics of crystallizers. However, when the secondary nucleation effect is predominant as in this study, the birth function needs to be determined from the start-up data. In this study, using the growth function and the birth function determined from experimental data the transient behavior for the starup of the crytallizer was analyzed and compared with experimental results.

AUC(Ammonium Uranyl Carbonate)열분해 반응

김응호,박장진,박진호,장인순,최청송 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1

AUC[Ammonium Uranyl Carbonate, (NH₄)₄UO₂(CO₃)₃] 의 열분해 실험이 열 중량분석 및 시차 열분석 장치를 사용하여 질소, 탄산가스 분위기에서 수행되었다. 특히, 환원성 분위기에 관한 연구를 위해 수소 농도를 5%에서 100%까지 변화시켰다. 중간체들의 구조를 확인하기 위해 X-ray가 사용되었나. AUC는 300℃ 이하에서 CO₂, NH₃와 H₂O를 방출시키면서 사용된 분위기에 관계없이 무정형의 UO₃로 열분해되었으며 온도를 더 증가시키면 공통적으로 무정형 UO₃로부터 α-UO₃, α-U₃O_8 상을 거치게 되며 수소 분위기의 경우 UO₂까지 환원되었다. 분위기 가스에 따른 중간체 생성조건(반응온도, 반응열, 열분해후 잔류량)들이 제시되었고, 또한 분위기 가스가 중간체 생성조건에 미치는 영향이 검토되었다. The thermal decomposition of AUC[Ammonium Uranyl Carbonate (NH₄)₄UO₂(CO₃)₃] has been carried out by using TG(Thermo-Gravimetric Analysis) and DTA(Differential Thermal Analysis) in N₂, CO₂, and H₂ atmospheres, respectively. For studying the AUC thermal decomposition in reducing atmospheres hydrogen concentration was varied from 5 to 100%. Various intermediate phases produced from AUC decomposition with different atmospheres were confirmed by X-ray analysis. With release of CO₂, NH₃ and H₂O, AUC was decomposed to amorphous UO₃ up to 300℃. On further heating, the amorphous UO₃ was transformed to α-U₃O_8 via α-UO₃ regardless of applied atmospheres. α-U₃O_8 was further reduced to UO₂ only in a hydrogen atmosphere. Formation temperature of intermediates, heat of reaction and residual amounts remained in decomposed amorphous UO₃ etc. were presented. Also, effects of applied atmospheres on these parameters were discussed.