식사관리와 영양지식에 관한 연구

이효지,장유경,오은주,유차숙 漢陽大學校 韓國生活科學硏究所 1989 韓國 生活 科學 硏究 Vol.- No.7

The purpose of this study was to investigate meal management and nutrition knowledge of the housewives according to their region, age, educational level, income and occupation. The subjects consisted of 2082 housewives residing in big city, middle or small city and agricultural and fishing villages. The portion of housewives living in the middle or small city was 44.1% and the major portion of age distribution was 30's(34.2%). More than half of the housewives(58.5%) had a job. Meal management included in this sutdy was their attitude for meal, nutritional balance in their dishes and harmonizing nutrition knowledge in the life. The meal attitude of the housewives who had no job was the lowest score. Dishes arrangement and harmonizing nutrition knowledge in the life were shown the highest score at the age of 60's. They had experience of nutritional education(63.8% ), The source of nutritional information were in order of TV., radio, relatives & neighbors, newspapers and magazines. The average score of nutrition knowledge was 7.07 out of possible 10 point. Nutrition knowledge had significant correlation with region, age, educational level and income. With increasing educational level, income and decreasing age, the score of nutrition knowledge was getting higher. Also, the housewives of urban was the higher in the nutrition knowledge score than those of rural. The frequency of food intake appeared at the higher in fruits, milk & products than meats & fishes, fishes of eatable bone, yellow green vegetables, and frying and parching food etc.

Polymerization of Hydrosilanes and Vinyl Monomers in the Presence of Transition Metal Complex

Myoung-Hee Kim, Jun Lee, Hyo Chang Cha, Joong-Hyeok Shin, Hee-Gweon Woo 조선대학교 기초과학연구원 2009 조선자연과학논문집 Vol.2 No.1

This minireview provides the chosen examples of our recent discoveries in the polymerization of hydrosilanes, dihydrosilole, lactones, and vinyl derivatives using various catalysts. Hydrosilanes and lactones copolymerize to give poly(lactone-co-silane)s with Cp2MCl2/Red-Al (M = Ti, Zr, Hf) catalyst. Hydrosilanes (including dihydrosilole) reduce noble metal complexes (e.g., AgNO3, Ag2SO4, HAuCl4, H2PtCl6) to give nanoparticles along with silicon polymers such as polysilanes, polysilole, polysiloxanes (and silicas) depending on the reaction conditions. Interestingly, phenylsilane dehydrocoupled to polyphenylsilane in the inert nitrogen atmosphere while phenylsilane dehydrocoupled to silica in the ambient air atmosphere. Cp2M/CX4 (M = Fe, Co, Ni; X = Cl, Br, I) combination initiate the polymerization of vinyl monomers. In the photopolymerization of vinyl monomers using Cp2M/CCl4 (M = Fe, Co, Ni), the photopolymerization of MMA initiated by Cp2M/CCl4 (M = Fe, Co, Ni) shows while the polymerization yield decreases in the order Cp2Fe > Cp2Ni > Cp2Co, the molecular weight decreases in the order Cp2Co > Cp2Ni > Cp2Fe. For the photohomopolymerization and photocopolymerization of MA and AA, the similar trends were observed. The photopolymerizations are not living. Many exciting possibilities remain to be examined and some of them are demonstrated in the body of the minireview.

Photopolymerization of Vinyl Monomers Using Organic Initiators

Myoung-Hee Kim, Jun Lee, Hyo Chang Cha, Heui-Suk Ham, Hee-Gweon Woo 조선대학교 기초과학연구원 2009 조선자연과학논문집 Vol.2 No.1

This miniaccount presents the selective examples of our recent discoveries in the photopolymerization of vinyl monomers using the organic initiators such as hydrosilanes, poly(hydroarylsilane)s, benzoin silyl ethers, and thianthrene cation radical. In the photopolymerization of vinyl monomers with silanes polysilanes, while the polymerization yields and polymer molecular weights of the poly(MMA)s containing the silyl moieties decreased, the TGA residue yields and intensities of SiH stretching IR bands increased as the mole ratio of the silanes over MMA increased. The hydroarylsilane and poly(hydroarylsilane) seemed to influence strongly on the photopolymerizaiton of olefinic monomers as both chain initiation and chain transfer agents. For the photohomopolymerization and photocopolymerization of MA and AA, the similar trends were observed. Benzoin silyl ethers and thianthrene cation radical also exhibit the photoinitiating ability in the photopolymerization of MMA.

Plasmodium falciparum Cultivation Using the Petri Dish: Revisiting the Effect of the ‘Age' of Erythrocytes and the Interval of Medium Change

Young A Kim,Je Eun Cha,Sun Young Ahn,Seung Ho Ryu,Joon Sup Yeom,Hyo Il Lee,Chang Gyun Kim,서주영,박재원 대한의학회 2007 Journal of Korean medical science Vol.22 No.6

Differences in the characteristics of the culture conditions can influence the multiplication rate of Plasmodium falciparum. The Petri dish method is one of the most popular methods of cultivating this parasite. In many previous studies, ideal culture conditions of the Petri dish method were achieved by using erythrocytes collected from blood that had been stored for at least 2 weeks, with daily changes of the medium. In the present study, we studied the multiplication rate of P. falciparum in cultures containing erythrocytes of various ages together with changing the medium at various intervals of time. Our results strongly suggest that the rate of in vitro multiplication of P. falciparum was higher in freshly collected erythrocytes than in aged erythrocytes regardless of the anticoagulant and that when the parasitemia is lower than 8% with a hematocrit of 5%, the medium change interval can be as long as 48 hr without a great reduction in the rate of multiplication.

<i>SERPINE2</i> Polymorphisms and Chronic Obstructive Pulmonary Disease

Cha, Seung Ick,Kang, Hyo-Gyoung,Choi, Jin Eun,Kim, Min Jung,Park, Jaeho,Lee, Won Kee,Kim, Chang Ho,Jung, Tae Hoon,Park, Jae Yong The Korean Academy of Medical Sciences 2009 JOURNAL OF KOREAN MEDICAL SCIENCE Vol.24 No.6

<P>A number of genome-wide linkage analyses have identified the 2q33.3-2q37.2 region as most likely to contain the genes that contribute to the susceptibility to chronic obstructive pulmonary disease (COPD). It was hypothesized that the <I>SERPINE2</I> gene, which is one of the genes located at the 2q33.3-2q37.2 region, may act as a low-penetrance susceptibility gene for COPD. To test this hypothesis, the association of four <I>SERPINE2</I> single nucleotide polymorphisms (SNPs; rs16865421A>G, rs7583463A>C, rs729631C>G, and rs6734100C>G) with the risk of COPD was investigated in a case-control study of 311 COPD patients and 386 controls. The SNP rs16865421 was associated with a significantly decreased risk of COPD in a dominant model for the polymorphic allele (adjusted odds ratio [OR]=0.66, 95% confidence interval [CI]=0.45-0.97, <I>P</I>=0.03). In haplotype analysis, the GACC haplotype carrying the polymorphic allele at the rs16865421 was associated with a significantly decreased risk of COPD when compared to the AACC haplotype (adjusted OR=0.58, 95% CI=0.38-0.89, <I>P</I>=0.01), and this effect was evident in younger individuals (adjusted OR=0.30, 95% CI=0.14-0.64, <I>P</I>=0.002). This study suggests that the <I>SERPINE2</I> gene contributes to the susceptibility to COPD.</P>

Passivation performance improvement of ultrathin ALD-Al₂O₃ film by chemical oxidation

Cha, Hamchorom,Chang, Hyo Sik Elsevier 2018 Vacuum Vol.149 No.-

<P><B>Abstract</B></P> <P>We investigated the passivation performance improvement of ultrathin Al<SUB>2</SUB>O<SUB>3</SUB> tunnel oxide by chemical oxidation. The thickness of the Al<SUB>2</SUB>O<SUB>3</SUB> tunnel oxide deposited by atomic layer deposition (ALD) was about 1 nm. The surface treatment was prepared as a function of chemical-oxidation time before ALD-Al<SUB>2</SUB>O<SUB>3</SUB> growth. The Al<SUB>2</SUB>O<SUB>3</SUB> films on surface-treated wafers showed improved passivation performance compared with the Al<SUB>2</SUB>O<SUB>3</SUB> films on untreated wafers. The electrical characteristics showed that the surface-treated films, due to their enhanced initial ALD growth, enabled a low-interface-state defect and high film quality. In terms of tunneling and passivation performance, the optimal time of chemical oxidation was 2.5 min. The values of open-circuit voltage and carrier lifetime for the passivated tunnel oxide under this surface condition were 645 mV and 1 ms, respectively. A 1 nm ALD-Al<SUB>2</SUB>O<SUB>3</SUB> films on surface treatment are applicable for passivated tunnel oxide.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Passivation performance improvement of ultrathin Al<SUB>2</SUB>O<SUB>3</SUB> film by chemical oxidation. </LI> <LI> Passivation performance was strongly dependent on the chemical oxidation time. </LI> <LI> Optimal of chemical oxidation time for the tunnel-oxide ALD-Al<SUB>2</SUB>O<SUB>3</SUB> was 2.5 min. </LI> <LI> Chemical oxidation of 1-nm-thick Al<SUB>2</SUB>O<SUB>3</SUB> film is useful for passivated-tunnel oxide. </LI> </UL> </P>

ON A RING PROPERTY GENERALIZING POWER-ARMENDARIZ AND CENTRAL ARMENDARIZ RINGS

CHA, HO JUN,JUNG, DA WOON,KIM, HONG KEE,KIM, JIN-A,LEE, CHANG IK,LEE, YANG,NAM, SANG BOK,RYU, SUNG JU,SEO, YEONSOOK,SUNG, HYO JIN,YUN, SANG JO The Kangwon-Kyungki Mathematical Society 2015 한국수학논문집 Vol.23 No.3

We in this note consider a class of rings which is related to both power-Armendariz and central Armendariz rings, in the spirit of Armendariz and Kaplansky. We introduce central power-Armendariz as a generalization of them, and study the structure of central products of coefficients of zero-dividing polynomials. We also observe various sorts of examples to illuminate the relations between central power-Armendariz and related ring properties.

Morphological characteristics of Cordyceps sinensis 16 and production of mycelia and exo-biopolymer from molasses in submerged culture /

Cha, Sun Hee,Kim, Jong Chae,Lim, Jung Soo,Yoon, Chul Sik,Koh, Jong Ho,Chang, Hyo Ihl,Kim, Seung Wook The Korean Society of Industrial and Engineering C 2006 Journal of industrial and engineering chemistry Vol.12 No.1

식품중 Listeria minocytogenes의 조기진단법 및 분포조사에 관한 연구

김창민,박선희,곽효선,강윤숙,차진,박성국,백선영,장미경 식품의약품안전청 1998 식품의약품안전청 연보 Vol.2 No.-

조기진단법에 의하여 운통 중 오염식품을 신속하게 배제하고 이로 인한 위해 발생을 방지하며, 분포조사에 의하여 오염도가 높은 식품을 확인하고 이들 식품을 질중 감시하는 근거자료를 마련하고자 3. monoafog☞nos의 시험법검토 및 불폰조사를 실f'1하였다. 조기진딴템으로는 PCR을 이용하여 listeriolysin 0를 코드하는 유전자인 ffy유전자를 검출하는 시험법을 정립하였다. 햄 g당 10"-10'와 균을 접종하여 검색한 결과 BO"을접종한 시료에서도 』fr유전자가 검출되었다- 따라서 이 시험법을 간이검색법으로 이용하여 신속 · 간단하게 교. mOHODf09?n슬를 조기진단할 수 있는 가능성을 확인하였다. L ptonoafogenes의 식품 중 오염정도를 조사하기 위하여 1998년 3월부터 10월까지 서울, 부산,광주, 대잔, 제주의 5개 지역에서 시간 중인 햄 105건, 치즈 105건 및 쇠고기, 돼지괴기, 닭고기 등 식육 149건의 총 359건을 구입하였다. 시험 결과 햄 및 치즈에써는 교. r1oHo04cg☞nrs가 검출되지 않았으나, 식육에서는 6건(4%)에서 검출되어 매우 낮은 검출율을 보였다. 분리된 6주의 교. monocyfogenee는 병원인자인 Afy유전자와 inf유전자를 보유하고 있었다. This stuay was conducted to develop a rapid detection method of 31'rferf'S rtonoofogenes in foods to facilitate the inspection and management, of contaminated foods. To set up a rapid detectionmethod for L HrouoDfogrHer in foods, PCR method tcl amplify ffy gene encoding listeriolysin 0 was eval-uated. After enrichment culture of samples iBitially spiked with 3. mouoefcg☞nor to the concentrationsof 103_ 10'cfu/g, respectivel·r, PCR was carried out llsiug those culture broths. As a result, this moth㉠dwas proven to be a rapid and simple screening method for detettion of t monoefog☞Her in foods. The in-cidence of t. uonocyfog?nes was surveyed of 359 food samples. 105 hams, 105 cheeses and 149 Heats werepurchased at the retail markets in Seoul, Pusan, naejon, Kwangju and Jeju from Mareh to October iB1998. Hams'and cheeses were free from L monoafogenra, but 6(4% ) of meat samptes were found to becontaminated with L mono☞frgeoea The 6 isolates w,ere found ·to harbor fly gene and inf gene.

생약 추출물 섭취와 중강도의 지구성 훈련이 유산소 운동능력과 동화호르몬 농도 및 면역세포에 미치는 영향

김효정 ( Hyo Jeong Kim ),차연수 ( Youn Soo Cha ),김창근 ( Chang Keun Kim ) 한국운동영양학회 2004 Physical Activity and Nutrition (Phys Act Nutr) Vol.8 No.1

This study was performed to investigate the effect of herb extract ingestion and moderate exercise training on aerobic capacity, anabolic hormone concentration, and immune system in middle aged men (35-47yrs, n = 39). The herb extract made of Garnoderma lucidum, Rosa roxburghii tritt, and Astragalgi Radix were ingested 3 times a day and aerobic exercise training was performed at 50-60% of VO₂max during 12 weeks (60 minutes·day^(-1), 5 days·week^(-1)). All subjects were divided into 4 groups according to exercise training and ingestion. All of subjects performed maximal treadmill exercise test before and every 6 weeks of training. Maximal oxyzen uptake (VO₂max) and aerobic threshold (AT) in training with ingestion group (6 wk, 12 wk) and exercise group (12 wk) was higher than those of control group (p<.05). Anabolic hormone concentrations in training without ingestion group was higher than control after 12 weeks (p<.05). Triglycerides in training with ingestion group (12 wk) was lower than control after 12 weeks (p<.05). Most of immune cell composition in blood were unchanged after 12 weeks. In conclusion, herb extract ingestion can be effective to improve aerobic performance. But it seems that herb extract ingestion itself may not the case to improve anabolic hormone secretion and immune cell composition, wherase exercise training demonstrates a positive effective in anabolic hormone secretion in middle aged men.