• Elastomers and Composites
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• 제14권1호
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• pp.7-12
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• 1979

Graft copolymerization of methlymethacrylate(MMA) onto sodium alginate(SA) aqueous solution by sodium metaperiodate$(NaIO_4)$ as an initiator was carried out with the variation of the reaction time, the reaction temperature and the concentrations of initiator and monomer. The results obtained were as follows: 1. SA was easily separated from the reaction mixture of homopolymer, graft polymer and sodium alginate ungrafted by the treatment of concentrated boiling $Na_3PO_4$, solution with the small amount of $Na_2SO_3$ to the mixture and then isolated as the acid form by acidifying the salts solution containing SA. 2. The amount of graft polymer was larger than that of homopolymer below $70^{\circ}C$ whereas above $70^{\circ}C$ the amount of homopolymer was larger. 3. The sum of each amount of graft polymer ana homopolymer was always increased with increase of the reaction time, the reaction temperature and the concentrations of initiator and monomer. 4. With increase of the concentration of initiator, the graft efficiency was increased below $70^{\circ}C$ while decreased above $70^{\circ}C$. 5. Graft copolymerization of MMA onto SA in aqueous solution was carried out without initiator.

• Journal of Nutrition and Health
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• 제3권2호
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• pp.87-94
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• 1970

The amino acid composition of human and cow's milk represents a standard of reference in infantnutrition. The amino acid compositions determined by automatic amino acid analyzer, Yanagimote Model LC-5. Protein in the human and cow's milk were found to be hydrolyzed to yield free amino acids. Qualitative data for free amino acids in the milk are as follows: 1) Amounts of acidic amino acids such as glutamic and aspartic acid in cow's milk were obserbed to be about 2 times compared with human milk and it is considered that the abundance in these amino acids may contribute significantly to the specific flavor of cow's milk. 2) It is much interesting that in the human milk the contents of sulfur-containing amino acids were high comparatively better than cow's milk; cystine was found to be 3 times ana methionine, 2 times. 3) In the human milk a high content of some essential amino acids such as threonine, isoleucine and leucine was demonstrated and a specific flavor sweet amino acids. 4) Large amounts of basic amino acid such as histidine was found to occur in human milk and arginine in cow's milk.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2004년도 추계학술대회
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• pp.61-70
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• 2004

본 논문은 기상 예보 및 목측 관측의 파랑 정보를 이용한 운항 선박의 최적 항로 평가 시스템 개발에 관한 내용을 다룬다. 예로부터 선장 및 항해사는 경험적으로 기상과 선박 상태를 고려하여 최적의 항로를 선택하여 항해하여 왔다. 이는 선장의 경험을 바탕으로 해류나 파랑에 대한 기상 예보 정보를 활용하여 최적항로를 결정하는 것으로 아직까지 선상에서 항로 결정을 보조해주는 디지털화한 시스템은 그 사례를 찾아보기 힘들다. 본 논문에서는 선박의 운항 효율성과 안전성 관점에서 구성되어져 있는 선상 최적 항로 평가 시스템을 소개한다. 효율적인 항해를 위해서는 도착예정시간 및 연료소모량을 최소로 하는 최적 항로를 구한다. 이는 선박의 파랑 중 부가저항에 기초를 둔 선속 저하 및 마력 증가를 고려하여 계산한다. 안전성 관점에서는 3D 판넬법에 기초를 둔 선박의 내항 계산을 본 시스템에서 구현하여 내항 평가를 수행한다. 기본적으로 기상 예보는 본 시스템을 구동하기 위해 우선적으로 준비되어져야만 한다.

• Journal of Nutrition and Health
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• 제14권1호
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• pp.16-25
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• 1981

한국에서 사육되고 있는 오리의 식용화를 검토하기 위하여 시도하였다. 시장에서 구입한 오리고기를 일반분석하여 수분 62.87%, 조단백질 19.06%, 조지방 17.05%, 회분 1.02%를 나타냈으며 오리고기 단백질을 GLC로 분석하여 거의 모든 필수아미노산이 함유되어 있음을 알 수 있었고 트리프토판이 제한 아이노산 이었다. 한편 오리고기의 지방산을 GLC로 분석하여 oleic acid가 많았고 linoleic acid도 상당량 함유되었음을 알 수 있었고 지방산의 P/S 비는 3.4를 나타냈다. 그리고 오리고기의 콜레스테롤 함량은 70.5mg%를 나타냈고 인지질도 많은 양이 함유되었으며 특히 레시틴이 많았다. 도살 후 2시간까지는 APT-phosphorus의 유리는 높은 온도에서 훨씬 빨리 되어지며, 근원단백질의 ATPase활성은 EDTA, 금속이온의 농도가 증가하면 억제를 받고 농도가 감소되면 활성은 증가되었다. 오리고기를 상이한 조건에서 조리하고 pepsin을 첨가하여 좋은 소화상태를 알 수 있었다. 이는 오리고기가 동물성 단백질이 풍부하며 소화도 잘 되므로 좋은 동물성 단백질원이 된다고 생각되어 진다.

• Journal of Preventive Medicine and Public Health
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• 제16권1호
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• pp.25-30
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• 1983

This research is to examine the detoxication effect of methionine on cadmium intoxication For this purpose, this paper provides an analysis of the data on the groups of mice (ICR), one group of mice treated with 40 ppm of cadmium only. and other groups of mice combined-treated with cadmium and 0.1%, 0.25%, 0.5% and 1% methionine. After breeding for 40 days, the data on the growth of mice, changes in activation of alkaline phosphatase in blood, and the cadmium content in the liver and kidney, are analysed. The results were as follows: 1) The growth-rate of mice, in the cadmium only injected group, was declined by 9% in comparison with the control group after 40 days. But the two groups of cadmium with 0.5% and 1% methionine showed the rise of 9% ana 14% respectively above the growth-rate of the control group. The results from the groups of cadmium with 0.1% and 0.25%, methionine were similar to that from the cadmium only injected group. 3) Changes in activation of alkaline phosphatase in blood decreased to 86.45% in the cadmium only injected group behind the 100% activation of the control group. The groups of cadmium with 0.1% and 0.25% methionine showed no difference with the former group. But the groups of cadmium with 0.5% and 1% methionine recovered to the 93.14% and 96.08% of activation respectively. 3) The mean content of cadmium in the liver was $0.028{\pm}0.001{\mu}g/g$ in the control group. The cadmium only injected group showed the mean cadmium content of $2.80{\pm}0.62{\mu}g/g$ in the liver, which was similar to $2.82{\pm}1.03{\mu}g/g$ in the group of cadmium with 0.1% methionine, and $2.56{\pm}0.77{\mu}g/g$ in the group of cadmium with 0.25% methionine. But the groups of cadmium with 0.5% and 1% methionine showed the reduction of cadmium contents in the liver to $1.84{\pm}0.56{\mu}g/g$ and $1.74{\pm}0.35{\mu}g/g$ respectively. In the kidney, the groups of cadmium with 0.1%, 0.25% and 0.5% methionine shelved the similar cadmium content to the group treated with cadmium only. But the group of cadmium with 1% methionine showed a small increase to $4.13{\pm}1.00{\mu}g/g$ in comparison with the group treated with cadmium only. This analysis proves that the mobility and diffusion of cadmium in tile tissues advance faster ill the group treated with cadmium and methionine than in the group treated with cadmium only.

• Restorative Dentistry and Endodontics
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• 제42권4호
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• pp.324-331
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• 2017

Objectives: This study evaluated smear layer removal by different chemical solutions used with or without ultrasonic activation after post preparation. Materials and Methods: Forty-five extracted uniradicular human mandibular premolars with single canals were treated endodontically. The cervical and middle thirds of the fillings were then removed, and the specimens were divided into 9 groups: G1, saline solution (NaCl); G2, 2.5% sodium hypochlorite (NaOCl); G3, 2% chlorhexidine (CHX); G4, 11.5% polyacrylic acid (PAA); G5, 17% ethylenediaminetetraacetic acid (EDTA). For the groups 6, 7, 8, and 9, the same solutions used in the groups 2, 3, 4, and 5 were used, respectively, but activated with ultrasonic activation. Afterwards, the roots were analyzed by a score considering the images obtained from a scanning electron microscope. Results: EDTA achieved the best performance compared with the other solutions evaluated regardless of the irrigation method (p < 0.05). Conclusions: Ultrasonic activation did not significantly influence smear layer removal.

• 간호행정학회지
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• 제7권3호
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• pp.545-560
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• 2001

The Purpose of this study was to suggest the direction of restructuring organization of KNA. For this purpose, it was tried to identify the organization structure and effectiveness of KNA and member's need and perception on KNA, and to compare with other NNA's organization structures and major activities. To collect the data, Delphi technique and survey were done. And the various data such as the annual reports, inspection reports, the articles of KNA, ANA, JNA, and RCN and other related references were investigated as well. The subjects were consisted of 102 representatives of KNA and 520 staff nurses. The data was collected from September 20. 1999 to February 10. 2000. In conclusion, this study recommends the following actions to restructure the organization of KNA. 1) The current framework of the overall structure will be maintained. 2) Among organizations in the Headquarter, the policy-making and revenue-making functions will be strengthened. 3) The opportunities of participation of the general members in the KNA activities will bee more reinforced than as it is. 4) The way of constitution of the Representatives and the Board of Directors will be modified not to be partial in terms of representativeness. 5) More emphasis will be put in such projects as welfare improvement of members, and advocacy of members' right at work.

• 수산경영론집
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• 제29권2호
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• pp.143-161
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• 1998

The objective of this study is to analyze the effects of increase in the oyster hatchery on fishermen's income. The results of the analysis are as follows : \circled1 The necessary quantities of oyster seed are 18,000 thousand hanging line. The 29.4%, of that has been applied by ana-seed collection and 29.1% of that has been applied by proseed collection. The demage of oyster aquaculture business is estimated about 35 billion won or 83 billion won. \circled2 The production cost per hanging line of the oyster hatchery is 1,974 won. And if it is sold by 2,500 won, return on investment will be 31.9%. Therefore profitability of the oyster hatchery is very good. \circled3 There are four important determinant variables of profitability to the oyster hatchery. In the order of their effects, it is operation number, seed price, production cost, and quantity of production. \circled4 If differences of price between the artificial hardening oyster seed and the natural hardening oyster seed are more less 1,430 won, the former is better. \circled5 The necessarily quantities of the oyster hatchery are estimated 160 units in the scale of 10,000 hanging line production to one operation. \circled6 The effect of increasing income of fishermen are estimated about 85.3 billion won or 124.5 billion won from increase in the oyster hatchery.

• Journal of Nutrition and Health
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• 제16권3호
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• pp.216-227
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• 1983

As an attempt to improve the nutritional status of Korean rural pre-school children, anthropometry, clinical examination, and hematological parameters(Hb, Ht, and serum albumin) are measured. Six kinds of diet supplemented with 0, 2.5, 5.0, 7.5, 10.0 and 20.0 mg Fe(as ferrous sulfate) were used for 10 weeks. Subjects were 349 pre- school children aged from 1 to 5 years old living in An-gam-my-on and Bong-dang-myon, Hwa-seung-goo, Kyong-gi-duo, and the supplementary diet was a product of the Model Nutritional Enterprise Factory in Wuen-sueng-goon, Gang-won- duo. The results obtained were as follows : 1) Physical development of subject children were within normal range during the feeding trial period of 9 weeks. 2) From the results of clinical examination, no children showed nutritional deficiency signs. 3) Iron free supplementary diet group( control group ) among other subject children also showed some improvement of hemoglobin level ana frequency of anemia. 4) The amount of iron fortified as supplemental diet was effective in 5.0-7.5 mg Fe per child per day, no further effect was observed by adding of more iron. 5) The values of hematocrit and serum albumin also improved by providing the supplementary diet.

• 한국의류학회지
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• 제26권1호
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• pp.15-26
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• 2002

The purpose of this study was to classier the somatotype of late middle-aged women and to analyze the characteristics of each somatotype. The subjects were 337 late middle-aged women and their age range os from 45 to 59 fears old. Data were collected through anthropometry and photometry and analyzed by factor analysis, cluster analysis and discriminant analysis. The results were as follows; 1. The result of factor analysis indicated that 9 factors were extracted through factor analysis and those factors comprised 83.56 percent of total valiance. 2. Using factor scores, cluster analysis was carried out and the subject were classified into 4 cluster. Each cluster was classified as their body front and side view contour. Type 1 is tall, slim, and lower balk is flat on the side. Type 2 is standard and lean-back type on the side. Type 3 is standard height and weight, H type in front, and belly-protruded on the side. Type 4 is short, fat, and the side is hip-protruded. 3. According to the stepwise discriminant analysis, the 9 important items in classifying the somatotype of the late middle-aged women are as follows ; lower back tilt angle, hip depth(back) -back waist depth(back), bust depth(fore) - anterior waist depth(fore), jugular fossa point(fore), upper back tilt angle, burst breadth -waist breadth, right shoulder tilt, height of shoulder - height of anterior waist, abdomen breath. The correct classification rate for these items is as exact as 84.62%.