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Black Stem이 팽화주맥 및 제품담배의 품질에 미치는 영향
양진철,김대영,노재성,한정호,정한주,김용하,김용옥,Yang, Jin-Chul,Kim, Dae-Young,No, Jae-Seong,Han, Jung-Ho,Chung, Han-Ju,Kim, Yong-Ha,Kim, Yong-Ok 한국연초학회 2010 한국연초학회지 Vol.32 No.1
This study was carried out to investigate the influence of stem materials such as black stem on the quality of expended stem and cigarettes. Normal and black stem were separated by tobacco scan and then, those stems were expanded after treating with their respective stem casings. Total sugar, ether extract, ash contents and pH were slightly low in black stem compared with normal stem. However, the number of bacteria and fungi ratio were remarkably higher in black stem than that of normal stem. As compared with normal stems, ratio of rushed stem in rolled process was approximately 2 times higher in black stem with the consequency that the filling capacity of black stem was decreased. The ratio of large particles (> 3.35 mm) of expanded black stem showed decreasing tendency and small particles rate (1.40 mm <) was increased compared with normal stem. When expanded stems were prepared using stem containing 5 levels (0, 10, 20, 30 and 100 %) of black stem, the filling capacity was decreased and static burning rate was significantly decreased with increasing expanded black stem rate. However, the weight and hardness of cigarettes were slightly increased with increasing expanded black stem rate. The contents of phenol compounds, aromatic amines and carbonyl compounds in the cigarette mainstream smoke from the cigarette which was manufactured with various ratio of expended black stem, were gradually increased with increasing expanded black stem rates. Also, the cytotoxicity and the mutagenicity of the TPM were significantly increased with increasing expanded black stem rate. The sensory test result showed that cigarettes blended with 10 and 30 % level of black stem rate was exhibited significantly high sensory attributions such as off-taste, impact, hotness, bitterness and irritation as compared with cigarette blended with normal stem, while smoke fullness and cleanness were slightly decreased with increasing expanded black stem rates. The number of brown spots on cigarettes paper was 2 to 3 times high in cigarettes containing black stem than that of cigarette made from normal stem and were high with increasing black stem rate. The overall assessment in this study suggest, that black stem should not be used because of bad quality of expanded stem and high toxicological activity of cigarette mainstream smoke.
Polar Oil 계 Emulsion 의 상거동과 안정성에 관한 연구
박은희,정흥호,김종규,김형일,노재성 ( Eun Hee Park,Hung Ho Chung,Jong Gyu Kim,Hyung Il Kim,Jae Seong Rho ) 한국공업화학회 1997 공업화학 Vol.8 No.3
Cetyl alcohol과 polyoxyethylene(20) sorbitan monooleate를 혼합한 유화제와 양친매성 resin을 용매에 용해시킨 분산상에 분산매인 물을 첨가하여 O/W 에멀젼을 제조하여 HLM(Hydrophilic Lipophilic Balance) 값과 온도변화에 따른 상변화를 관찰 하였다. 양친매성 resin을 함유한 에멀젼은 이를 함유하지 않는 에멀젼보다 온도변화에 따른 상안정성이 좋다는 것을 알 수 있었다. 또한 양친매성 resin이 에멀젼 안정성에 미치는 영향을 파악하기 위해 양친매성 resin에 함유되어 있는 작용기중 하나의 작용기를 갖는 resin을 model compound로 하여 HLB값과 온도변화에 따른 에멀전 상거동을 관찰한 결과, Poly(acrylic acid)<poly(acryl amide)<poly(ethyl methacrylate) 순으로 안정성을 나타내는 것을 알 수 있었다. O/W emulsions were prepared by adding water to the solution containing amphiphilic resin and the mixed emulsifier of cetyl alcohol and polyoxyethylene(20) sorbitan monooleate. Phase behavoir of these emulsions was studied at various HLB(Hydrophilic Lipophilic Balance) values and temperatures. The polar oil emulsion containing the amphiphilic resin showed improved phase stability at various temperatures. Model compounds which contain one of the functional groups in the amphiphilic resin were used in the polar oil phase in order to study the effect of interaction between the functional group and the emulsifier on the phase stability of emulsion. These model compound emulsions showed the phase stability order of poly(acrylic acid) < poly(acryl amide) < poly(ethyl methacrylate).
II형 무수석고 및 고유동화제 첨가가 시멘트 페이스트의 유동성에 미치는 영향
김재호,김도수,이범재,노재성,Kim, Jae-Ho,Kim, Do-Su,Lee, Beom-Jae,Rho, Jae-Seong 한국공업화학회 1998 공업화학 Vol.9 No.3
II형 무수석고의 평균 입경과 치환율이 시멘트페이스트의 유동성에 미치는 영향에 대해 비교하였다. 나프탈렌계(NSF)와 폴리카르본산계(NT-2) 등 2가지 고유동화제의 첨가량을 0~2.0wt%으로 변화시켰을 때 3종으로 구분한 II형 무수석고의 평균입경(4, 14, $35{\mu}m$)과 치환율(3, 5, 10, 15wt%)의 변화에 따른 영향을 측정하였다. 이들 변수들에 따른 영향을 측정하기 위하여 시멘트페이스트의 초기 유동성 및 경과시간별로 겉보기 점도를 관찰하였다. 시멘페이스트의 초기유동성은 II형 무수석고의 평균입경에 의한 영향보다는 II형 무수석고의 치환율 증가에 의한 영향이 더욱 큰 것으로 나타났다. II형 무수석고의 치환율을 10wt%로 고정시 NT-2, 1.0wt% 첨가로 시멘트페이스트의 유동성은 동일 첨가량의 NSF보다 크게 향상되었다. 이는 측정된 변수들의 범위 중에서 가장 우수한 시멘트 페이스트의 유동성을 보여주는 경우이다. NT-2, 1.0wt% 첨가에서 II형 무수석고의 치환율 증가에 따라 시멘트 페이스트의 겉보기 점도가 현저하게 감소되었다. 이로부터 시멘트 페이스트의 유동성 향상을 위해서는 NT-2의 첨가와 더불어 시멘트를 II형 무수석고로 일정비율 치환하는 것이 더욱 효과적임을 알 수 있었다. A comparative study on the effects of mean particle diameter and substitutional ratio of II-anhydrite on the fluidity of cement paste has been conducted. Three different mean particle diameters(4, 14 and $35{\mu}m$) and four different substitution ratios(3, 5, 10, 15wt%) have been tested while the dosage of two superplasticizers - naphtalenic(NSF) and polycarboxylic(NT-2) - has been varied from 0 to 2.0wt%. To investigate the effects of those parameters, the variation in fluidity and apparent viscosity of the cement paste has been observed as a function of the elapsed time. The initial fluidity of the cement paste is more affected by the increase in substitution ratio than by the mean particle size of the II-anhydrite. When the substitution ratio of the II-anhydrite is fixed at 10wt%, addition of 1.0wt% NT-2 improves the fluidity of paste cement more than that for NSF. This case has showed the best improvement of the fluidity in the range of parameters investigated. At the addition of 1.0wt% NT-2, apparent viscosity of the cement paste has been noticeably decreased as substitutional ratio of II-anhydrite increases. It was found that it would be more effective to substitute II-anhydrite at a certain ratio to improve the fluidity of the cement paste, in addition to adding NT-2.
규산 나트륨으로부터 THF에 의해 추출된 규산을 이용한 Mullite 전구체 제조시 촉매에 대한 영향
정흥호,박은희,김도수,정호승,노재성 공주대학교 자원재활용신소재지역협력센터 2000 2차년도 센터 사업 성과집 Vol.2000 No.1
Sol-Gel법으로 Aluminum isopropoxide[Al(i-OC3H7)3]와 규산나트륨로 부터 THF로 추출한 규산을 사용하여 mullite 겔 분말 제조시 산염기촉매의 영향에 관하여 XRD, TGA. SEM, 및 BET를 이용하여 연구하였다. 산성촉매로는 염산 (HCl)과 질산(HNO3)을, 염기성촉매로는 암모니아 (NH4OH)를 사용하였다. 촉매에 따른 중량 감소는 HCI=32.6% > HNO3=25.43% > Non=24.0% > NH4OH=22.5% 순서로 나타났다. 입자의 형태는 산성촉매인 경우 구형의 입자를, 염기능촉매의 경우는 구형이 아닌 입자형태를 나타내었다. 1400℃에서 하소한 분말은 촉매의 종류에 관계없이 0.05∼0.1㎛ 크기의 매우 미세한 입자들의 응집체임을 알 수 있었다. 그리고 촉매의 종류에 관계없이 온도가 증가할수록 흡착할 수 있는 세공이 줄어듬을 알 수 있었고, 염기 촉매를 사용하는 경우의 mullite 비표면적 변화가 거의 없는 내열성을 가지고 있었다. Effect of catalysts, which was catalyzed by acid(HCl and HNO3) and base(NH4OH), on characteristics of the mullite powders prepared by sol-gel method was investigatad by XRD, TGA, SEM and BET. As a result, weight loss as a function of catalysts was in order of HCI=32.6% > HNO3=25.43% > Non=24.0% > NH4OH=22.5%. The mullite powder dried at 100℃ appeared spherical shape in acid catalyst and different shape in base catalysts but sintering powder at 1400℃ appeared very fine particle of 0.05~0.1 ㎛ ragardless of catalysts. In all case, the pore quantity, which was capable to adsorption, was decreased with increasing temperature. In base catalyst, no change of special surface area in mullite appeared.
운동처방 유형이 중년여성의 혈중지질 및 체지방량에 미치는 영향
정혜윤,임달식,박후성,전용욱,김재호,노재성 朝鮮大學校 스포츠科學硏究所 2007 스포츠科學硏究 Vol.18 No.-
This study was to examine the effects of Aerobic exercise program of body fat and mood state for women with obesity, and to apply this exercise program to the treatment and the promotion of health maintenance of obese women as a nursing intervention. Date were analysed by SPSS Win 12.0 program. Descriptive statistics used on demographic data of the participants was analysed in real number and percentage, body fat and the difference in mood state before and after the walking exercise program were analysed using the paired t-test . The results of this study were as follows: With administration of this program, so, the Aerobic exercise program showed and effect of the decrease for women with obesity and it also had an effect on the decrease of percentage of body fat for them. According to the results of this study, the walking exercise program as a nursing intervention had an effect of the body fat for women with obesity. however, the program did not prove the statistical significance for the change of mood state. Aerobic exercise program showed that effect is though fat woman's sieve local rate, Decrease that T-C keeps in mind from exercise rakeful and great kindness change to 207.8±23.2 as statistical difference that appeared, and decreased from great kindness change to shame upper HDL-C's exercise ago but keep in mind as statistical appear, Is looked that decrease that change before LDL-C's exercise keeps in mind as statistical by 138.1±20.5 appears. When see on the basis of result of something wrong continuous and regular abortion small success exercise because have middle age woman's physical strength E according to exercise form health promotion plan though to effect by Iteulgeot is considered, and decrease to note sieving amount power of a number and sieve local amount and appeared that abortion small success exercise exerts more affirmative effect.
Min, Kyung Rak,Kim, Youngki,Kang, Seh-Hoon,Mar, Woongchon,Lee, Kyong Soon,Ro, Jae Seup,Lee, Seung Ho,Kim, Youngsoo 영남대학교 약품개발연구소 1997 영남대학교 약품개발연구소 연구업적집 Vol.7 No.-
Prostaglandin H₂synthase is the pharmacological target site of nonsteroidal antiinflammatory drugs. Inhibitory effects on cyclooxygenase activity of the synthase by extracts prepared from herbal medicines and wild plants in Korea have been estimated. Sixteen species out of 612 species exhibited more than 50% of inhibition on the enzyme activity. The active extracts prepared from Carex humilis, Celastrus orbiculatus, Eugenia caryophyllata, Gleditsia japonica var. koraiensis, Glycyrrhiza grabra, Glycyrrhiza uralensis, Gyrophora exculenta, lespedeza maximowiczii, Morus alba, Persicaria conspicua, Prunus salicina, Pterocarya stenoptera, Rheum undulatum, Vitis amurensis, and Vitis coignetiae have been sequentially washed with methylene chloride, ethyl acetate, n-butanol. Among the solvent fractions of the active herbal extracts, ethyl acetate fraction of Carex humilis exhibited the highest inhibitory effect on the cyclooxygenase activity of prostaglandin H₂ synthase.