[추천의 말/당선소감] 갈대가 말하다 외_김병규

김병규,김소엽,박종해,성기조,윤강로,조명제 문예운동사 2014 문예운동 Vol.- No.123

SiO2 로서 응병결효과에 관한 연구

김병규 한국화학공학회 1967 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.5 No.2

Generally, SiO₂ were disliked in natural water suspension solutions and various methods of its exclusion have been investigated in industrial fields. In colloid science, SiO₂ of the nascent state in water solution is well known as a hydrophilic inorganic sol, and also has negative charge in weak acid, neutral solution and alkali solution. Clay and arsenic trisulfide particles in water solution have the properties of negative charge and hydrophobic sol. In the above cases, the suspension expects to appear phenomena of the sensitization with mutual action according to control the concentration of hydrophilic sol on hydrophobic sol in the disperse system. In this experiment, it was investigated that the effect of coagulation by this sensitization of As₂S₃ and clay with SiO₂ were calculated by using C_0^(60) radioactive isotope method, and moreover, in its coagulation state observed by electromicroscope. The coagulation effects of the sensitization of SiO₂ sol against clay suspension were much weaker than the electrolytes in industrial water or natural water comparing the action of coagulation of electrolyte (Al₂(SO₄)₃) with non-electrolyte (SiO₂), and the effect of coagulation by SiO₂ concluded in this research to be caused by only van der Waals' forces and not Coulomb's forces.

活性炭에 依한 有機物 水溶液의 多性分 吸着 平衡

金昺圭,梁斗錫 成均館大學校 科學技術硏究所 1987 論文集 Vol.38 No.2

Multicomponent adsorption equilibria of organics on activated carbon were predicted by the ideal adsorbed solution (IAS) theory and the results were compared with those calculated from a different Freundlich-type isotherm. Mutual interactions between adsorbable species based on the competitive adsorption on heterogeneous surface of activated carbon. To ascertain the surface heterogeniety, the distribution of adsorption potential was calculated from the exponent parameter of single component Freundlich isotherms by assuming an exponential distribution function. The affinity for activated carbon was in the order : p-chlorophenol>m-cresol>phenol>aniline. The average percent deviation of the IAS theory is 5∼11% while that of Sheindorf's isotherm is 8∼20%. Although some deviations between measured and calculated results are observed, the IAS theory permits rapid and relatively accurate predictions of adsorption equilibria for two components. The results show that IAS theory is suitable for the extended application to multicomponent adsorption systems.

石灰石에 含有된 挾土(粘土, 頁岩)가 Mill 분쇄에 미치는 影響

金昺圭,朴壽幸 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.2

Since the major expence of production in cement industry is the electric power cost, many have been studying various ways for saving the electric power. In order to save the electric power cost the crushing effect of limestone was studied. Clay and shale were added to limestone and their crushing effect was investigated as well. The results are as follows: 1) The crushing effect of limestone when clay and shale were added increased by 9.5-13% as compared with that of lime-stone alone. 2) -The required electric power was saved by 3.4-12.2% when clay and shale were added to limestone. 3) The crushing effect of clay was better than that of shale as the beginning of crushing, but it decreased against crushing time and the quantity added.

無機凝集劑로써 Kaolin 懸濁液 凝集에 있어서 Gelatine이 미치는 影響

金昺圭 成均館大學校 科學技術硏究所 1985 論文集 Vol.36 No.1

An investigation was carried out to compare the coagulation effects of inorganic coagulants, gelatine, and inorganic coagulants with gelatine on coagulation of kaolin suspension. Inorganic coagulants used were Al_2(S0_4)_3, K-Alum, MgCI_2, CaC1_2, NaCl and KCl. The results are as follows; 1) When the inorganic coagulants only is added to kaolin suspension, i) The coagulation effect is superior to the other two cases. ii) The coagulating power of the inorganic coagulants is ranked as follows; Al_2(SO_4)_3> K-Alum CaCl_2>MgCl_2>KCl>NaCl It is consistent with the studies of other investigators. Also, coagulantion value decrease with increasing of molecular weight in the same ionic coagulants iii) The coagulation values of inorganic coagulants containing counter-ions with charge numbers of 3.2 and 1 i.e. Al_2 (SO_4)_3, CaCl_2, and KC1 are in the ratio of; 1,227X10 exp (-3) : 1.135X10 exp (-2) : 3.646X10 exp (-1) It is consistent with the D.L.V.0. theory and the Schulze & Hardy rule. iv) Because of cationic antagonism between potassium ions and aluminium ions in kaolin suspension, the coagulating power of K-Alum is weaker than that of Al_2 (SO_4)_3. 2) When an inorganic coagulant with gelatine is added to kaolin suspension, the coagulation effect is poorer than that when the inorganic coagulant only is added. As the charge number of the inorganic coagulant increases the coagulation effect is also increased, but the magnitude of the increase is small. 3) When gelatine only is added to kaolin suspension, the coagulation effect is the worst among the three cases. Only over a narrow range of dilute gelatine concentration the coagulation occurs slightly. 4) A logarithmic relationship between the relative turbidity and the settling time is as follows; log J_rel=-m log t+log ℃

Kaolin 懸濁液에 있어서 K-Alum의 凝集에 pH가 미치는 影響

金昺圭,鄭雲璇 成均館大學校 科學技術硏究所 1984 論文集 Vol.35 No.1

Investigation was carried out to find the effect of pH on flocculation of kaolin suspended in water using K-Alum. The particle size was about 0.57 micron and the volume concentration of kaolin suspended was about 0.0008(ø_k). The relative turbidity was calculated as the ratio of absorbance at 20℃ by spectrophotometer. The results are as follows; 1. Irrespective of pH, 1) With increasing flocculant dosage, the settling time of perfect flocculation decreased gradually and the settling velocity increased slightly. 2) Logarithmic relationship between the initial settling velocity in terms of (-dt/dA)_t→0 and thee critical flocculated concentration of K-Alum is as follow, log(-dt/dA)_t→0 = -mlog C_c.f.c + b 3) Because of cationic antagonism between potassium ion and aluminium ion in kaolin suspension, the flocculating power of aluminium ion decreased slightly. 2. With increasing pH in kaolin suspension, the flocculating power of K-Alum was weakened and constants, m, b increased gradually.

無機凝集劑에 依한 Kaolin 懸濁液凝集에 있어서 寒天이 미치는 效果

金昺圭,成始權 成均館大學校 科學技術硏究所 1986 論文集 Vol.37 No.2

An investigation was carried out to cmpare the coagulation effects of inorganic coagulants, Agaragar, and inorganic coagulants plus agar-agar on coagulation of kaolin suspension. Inorganic coagulants used were Al_2(SO_4)_3, K-Alum, CaCl_2, MgCl_2 and KCl, NaCl. The results are as follows; 1) When the inorganic coagulant only is added to kaolin suspension, ⅰ) The coagulation effect is superior to the other two cases. ⅱ) Th ecoagulating power of the inorganic coagulants is ranked as follows; Al_2(SO_4)_3>K-Alum>CaCl_2>MgCl_2>KCl>NaCl It is consistent with the studies of other investigators. ⅲ) The coagulation values of inorganic coagulants containing counter-ions with charge numbers of 3,2 and 1 i.e.Al_2(SO_4)_3 MgCl_2, and NaCL are in the ratio of; 1.227 × 10 exp(-3) : 1.36 × 10 exp(-2) : 5.304 × 10 exp(-1) (mol/l) It is consistent with the D.L.V.O. theory and the schulze & Hardy rule. iv) Because of cationic antagonism between potassium ions and aluminium ions in kaolin suspension, the coagulation power of K-Alum is weaker than that of Al_2(SO_4)_3 2) When an inorganic coagulant plus Agar-agar is added to kaolin suspension, the coagulation effect is poorer than that when the inorganic coagulant only is added. As the charge number of the inorganic coagulant increases the coagulation effect is also increased, but the magnitude of the increase is small. 3) When Agar-agar solution were added to kaolin suspension, it was the most ineffective among three suspensions, On the contray, it was an obstacle because the settlincg time is very long. 4) A logarithmic relationship between the relative turbidity and the settling time is as folows; log Trel = -m log t + log C

Formaline 縮合에 있어서의 Pyridine의 觸媒作用

김병규,최내영,서길덕 부산대학교 공과대학 부설 생산기술연구소 1975 硏究報告 Vol.14 No.-

본 보문에서는 산화납, 피리딘 단독촉매및 산화납-피리딘 공촉매 존재 하에서 포름알데히드 수용액의 알돌형 축합을 시행하여 박층크로마토그라프 법으로써 축합생성물을 분리하고 반응속도 정수 및 활성화에너지를 구한 결과를 다음과 같이 보고한다. 1. 피리딘은 포름알데히드의 이량화반응에는 전혀 촉매능이 없었으며 디히드록시아세톤의 이량화 반응및 키시로즈-포름알데히드의 축합반응에는 상당한 촉매능을 보여 케토-헥소즈를 생성하였다. 2. 초기축합반응은 포름알데히드의 농도에 대하여 외견상 2차 반응이었다. 3. 45℃=65℃에서 반응은 Arrhenius식에 잘 맞았으며 반응속도 정수및 활성화에너지는 다음과 같았다. k_(pbo), 338˚k=10.1×10^(-3), k_(pbo, 328˚k)=7.2×10^(-3), k_(pbo), 318˚k=5.6×10^(-3), k_(pbo-pγridine, 338˚k)=9.6×10^(-3), k_(pbo-pγridine,328˚k)=7.0×10^(-3), k_(pbo-pγridine, 318˚k)=5.1×10^(-3), unit;1 mole^(-1) sec^(-1) ΔE_(pbo)=7.8(Kcal mole^(-1)), ΔE_(pbo-pγridine)=8.3(")

企業環境의 變化와 戰略的 意思決定

金柄圭 朝鮮大學校 1986 經營經濟硏究 = Management and economics research Vol.9 No.-

수술적 치료한 69예의 만성 경막하 혈종의 임상적 분석 : Review of 69 Operated Cases

김병규,반재영,임좌혁,류태희,남방현,윤석훈 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.9

The authors analysed retrospectively, 69 cases of chronic subdural hematoma admitted to the Department of Neurological Surgery, from January 1992 to February 1995. All hematomas were operated on by one burr hole trephination and continuous closed-system cathter drainage system. The results were as follows : 1) Male was more frequently involved than female with ratio of 5.3:1 and the incidence was predominent in the patients whose ages were over 50. 2) History of head trauma was found in 52 cases(75.4%), among which habitual alcoholism was found in 6 cases(8.7%). 3) The major symptoms and signs at admission were headache(55.1%), hemiparesis (44.9%), and mental changes (30.4%). 4) On the brain CT scan, hematoma showed low, iso, mixed, and high in density, and the shapes of hematoma were crescenteric, biconvex, planoconvex, and concave in order of frequency. 5) We have found a significant relationship between the neurological grade at admission and the prognosis, and noted full recovery in 45 cases(65.2%) and no death as a result of 1-burr hole trephination.