마그네슘, 칼슘 및 인삼첨가 식이가 토끼의 리포단백질과 전해질에 미치는 영향

정영태,남현근 광주보건대학 1986 論文集 Vol.11 No.-

The Concentration of lipoprotein and electrolytes in rabbit serum was examed, according to magnesium, caleium and ginseng added into the basal diet. The results abtained are summarized as follows: 1. The concentration of HDL-cholesterole is increased by the ginseng addition, but HDL/T-CHOL ratio in the experimental test group T-3 and T-4 showed 0.44 and 0.46, respectively. And HDL/LDL ratio in T-3 and T-4 showed 1.27 and 1.18, respectively. 2. The concentration of LDL-cholesterol is slightly increased through the ginseng added diet feeding, but magnesium and calcium added diet group shows lower value than magnesium and calcium do not contained on. 3. Througout the ginseng, magnesiun and calcium added into basal diet, the distribution of electrolytes, potassium ion concentration is greater than sodium ion concentration.

全南地方의 農村과 都市人의 식이구성에 關한 比較 硏究

정영희,남현근 광주보건대학 1975 論文集 Vol.2 No.-

In order to know the Diets of Urban and Rural of Jeonnam Area, Nutrition survey carried out through two years. 1) In urban area, average intake of the 1, 2, 3, food-stuff groups per day is 969.66 gr(1974), 1,058.16 gr(1975). 2) In rural area, average intake of the 1, 2, 3, food-stuff groups per adult per day is 1,003.12 gr (1974), 949.70 gr (1975). 3) In urban area, Average intake of Nutritional elements per adult per day 433.88 gr(1974), 490.04 gr(1975), and in rural area, 604.41 gr(%974), 568,87 gr(1975). 4) Average Calorie distribution of the Nutritional elements per adult per day is 12.51% (Protein), 7.46% (Fat), 80.03% (Carbohydrates) in 1974 and 12.31% (Protein), 13.49%(Fats), 74.19% (Carbohydrates) in 1975 for the urban area. 5) In the rural area average, Calorie distribution per adult per day is 11.12% (potein), 5.37% (Fats), 83.61% (Carbohydrates), in 1974 and 11.44% (Protein), 9.83% (Fats), 78.73% (Carbohydrates) in 1975. 6) In the urban, ratio the animal protein per total protein intake is 30.29% in 1974, and 34.13% in the rural, 16.8% (1974), 15.26% (1975) average intake per adult per day respetively. 7) In aspect of Calorie: In the urban area, intaked Calorie is 2,525. 87 Cal in 1974, 2,533.05 Cal in 1975: In the rural area, intaked Calorie is 2,569.18 Cal in 1974, 2,45 0.82 Cal in. 1974. 8) In aspect of inorganic material, in the urban, amount of Ca intake is 569.97mg in 1974, 576.83 mg in 1975: in the rural, amount of Ca intake is 325.01 mg in 1975,385.84 mg in 1975. 9) In the urban, Fe intaked is 16:12mg in 1974, 12.74mg in 1975, In the rural, 7.26mg in 1974, 9.73mg in 1975.

Al-7%Zn 합금에 대한 Ti, B 및 Ti-B의 첨가 영향에 관하여

玄淸男 홍익대학교 산업기술연구소 1997 産業技術 Vol.7 No.-

The influence of small amount of Ti B and Ti-B in Al-7% Zn alloy was investigated by means of tensile strength, elongation and micro viker's hardness. The results obtained were as follows: 1. The addtion of a small amount of TiB and Ti-B did not show scarecely and remarkable effect upon the mechanical properties of A7% Zn alloy. Especially, in this alloy, it was found that the worked direction did not effect the mechanical properties at all. 2. The effect of Ti addition on the mechanical properties was more pronounced than of boron or Titanium-Boron.

공구 경사각의 변화에 따른 경질재료(SM45C. SM20C)의 절삭특성에 관한 연구

玄淸男 홍익대학교 산업기술연구소 1995 産業技術 Vol.5 No.-

In turing operation it is the material of work piece and cutting tool feed and cutting speed the depth of cut and rake that influence upon the accuracy of demension the manufacturing efficiency the extension of tool life and surface roughness. Especially the identification of cutting force due to the change of tool rake angle which exerts a grate influence on the turning is very important. In this study the cutting force of test materials such as SM45C surface roughness were measured by experiment. And the cutting resistance due to the change of tool rake angle was calculated by applying the three demensional cutting formula then the conditions of optimal machinability were obtained taking into consideration of the material characteristics. From the experimental results the conditions of optimal machinability classified by the test materials are as follows: 1) The normal force action on the tool face has the minimum value at the true rake angle of 5°-10° in SM45c respctively. 2) The speific cutting resisance is inversely proportional to the depth of cut feed and cutting speed and the reduction rates of specific cutting resistance has large values up to the true rake angle of 5°then the decreases when the rake angle increase. 3) The batter surface roughness is obtained when the cutting speed and the cutting depth decrease when the cutting speed is more than 150m/min a batter surface roughness is obtained but the tool life become extremely short due to the increase of tool rake angle. 4) The true rake angle of about 5°and the cutting speed of 150m/min are the conditions for the optimal machinability for SM45C and SM20C.

기업 경쟁력 강화를 위한 e-Learning기반의 6시그마 컨텐츠 개발사례

정남호,조일현 忠州大學校 2007 한국교통대학교 논문집 Vol.42 No.-

The Concept of Six-sigma was introduced at and popularized by Motorola in its quest to reduce defects of manufactured electronics products. When used as a metric, six sigma technically means having no more than 3.4 defects per million opportunities in any process, product, or services. More important than the technical definition is the concept of the six sigma as a disciplined, quantitative approach for improvement of defined metrics in manufacturing, service, or financial processes. In this research especially presents the detail process of development 6 sigma green belt contents through e-Learning and the success story of that.

마그네슘, 칼슘이 혈청콜레스테롤 농도의 저하에 미치는 영향(Ⅰ)

남현근,정영태 광주보건대학 1985 論文集 Vol.10 No.-

The effects of dietary calcium, magnesium on the serum cholesterol concentration in rabbit was studied for a period of 21 days using isocalories and isonitrogenous basal diet. It is investigated that the serum cholesterol level lowering 10-30% by feeding with calcium and magnesium containning diet was performed. There was no effect for the total protein, but there was some sort of effect for albumin and globulin. Particulary, the beta-globulin concentration was decreased by calcium and magnesium containning diet. It is, also, investigated that there is almost no effect for the electrolytes concentration transport and phenomena in the cell through magnesium and calcium containning diets.

운동이 Prednisolone투여 골격근에 미치는 효과 연구

남용현,오정희 고려대학교 의과대학 1990 고려대 의대 잡지 Vol.27 No.3

The effect of exercise on the skeletal muscle treated with prednisolone was studied by estimating the diameters of medial head of gastrocnemius and soleus muscle of the rat. The size of muscle fiber was determined by direct measuring the cross sectional diameter of dissected muscle stained by hematoxiline-eosin. The experimental rats were divided into 6 groups: control group, the exercised control group without prednisolone treatment, the exercised group with 5, 10, 15 days of prednisolone treatment and the exercised group which had 30 days of recovery period after 15 days of prednisolone treatment. The cross sectional diameters of the groups were 49.54±12.23㎛, 75.94±30.37㎛, 65.28±18.62㎛, 63.77±13.37㎛, 64.72±13.39㎛, and 77.87±14.11㎛ respectively in medial head of gastrocnemius and 50.78±12.15㎛, 64.48±13.91㎛, 60.26±14.31, 62.07±14.52㎛, 62.06±17.91㎛ and 70.98±15.82㎛, respectively in soleus. These data demonstrated that the cross sectional diameters of muscle fibers were enlarged significantly by exercise from 28.7% to over 31.8% in the medial head of gastrocnemius and 18.7% to over 23.5% in soleus muscle(p<0.001) in comparison with those of the control, but the decrement of the size was observed when the diameters were compared with those of the exercised group without prednisolone treatment (p<0.001). The increment rates were noted during the initial stage of exercise(p<0.001), but no further increases were observed during the late stage of exercise (p>0.05) urlth prednisolone treatment in both muscles.

女性 能力 開發을 위한 女性學課程 設置의 提案

玄永學,鄭世華,李男德,李效再 이화여자대학교 한국문화연구원 1976 韓國文化硏究院 論叢 Vol.28 No.-

For the past 20 years, there has been a substantial increase in the percentage of women going to colleges and universities in Korea: the statistics indicate that the male and female ratio changed from 87.3% to 12.2% in 1952 to 73.9% to 26.1% in 1974. Inspite of the increasing trend, some academic observers recently began to voice their opinions against higher education for women on the basis that Korean women, regardless of their education in an occupation or public life. The following trends partially support this opinion. First, the tendency of female students concentrating their major fields on a limited number of specializations, such as teachers' education, language, arts, nursing and medical technology, is a contrasting phenomenon with male students, who are more or less evenly distributed throughout all the areas of specialization as their major fields. Second, the remarkable increase in female labor participation for the past 10-15 years is largely contributed by women in the agricultural sector and manufacturing industries, as the percentage of women with higher education have shown not as much of an increase in the labor market as that of these with elementary level or less education. Furthermore, the percentage of women in professions and managerial occupations which would require college education for qualification toward has decreased from 2% in 1960 to 1.8% in 1970. Thirdly, a survey of Ewha graduates concerning their attitudes toward women's social role and college education presents revealing results of their conservatism and resignation sex equality and occupational roles. These findings certainly contradict the egalitarian principles of modern higher education and human potentials. However, there are now growing trends among female college students, with the awareness of changing sex roles, of taking seriously their future occupations and other social roles in addition to marriage. They are showing a greater concern for developing their potentials for professions and egalitarian roles for society, realizing the need for overcoming socio-cultural limitations as well as personal inertia. These are signs calling for new directions in women's education in Korea by introducing women studies programs which are designed to liberate women from the culturally conditioned state of self-awareness and the traditional status and role.

초음파를 이용한 형상인식에 관한 연구

玄淸男 홍익대학교 산업기술연구소 1996 産業技術 Vol.6 No.-

Recently a number of researches have been performed for the various methods of shape recognition of objects. An algorithm was developed for the recognition fo shape of arbitrary objects using ultrasonics. It was possible to measure the distance, the thickness and the real shape of the objects as well as the image of them using the experimental method developed here. Thus, the following results were obtained: (1) the basic algorithm for the recognition of shape of arbitrary objects can be applied to the real structures in the industry, (2) the error of measurement using the current method in within 1-6% compared to the real shape, and (3) in order to obtain the more accurate results, the minor errors in the algorithm and for the incident waves are being studied.

판형 열교환기의 열유동 해석

玄淸男,李相勳 홍익대학교 산업기술연구소 2002 産業技術 Vol.12 No.-

In this study, the heat transfer coefficient and heat stress and the flow characteristics according to the shape of pipe interior in Plate Heat Exchanger is studied by a numerical method using Design-Space. One of the most common heat exchangers that is mainly attached in vehicles is studied. Analysis is performed by comparing the results for plate heat exchangers with those for cylinder heat exchangers. In order to increase the effectiveness of heat exchangers, thermal conductiom, material, and thermal stresses in plate heat exchangers are investigated.