• Title/Summary/Keyword: good quality

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A study on micro-deburring of thin magnesium plate for application of electronic products (마그네슘 박판의 전자부품 적용을 위한 마이크로 디버링에 관한 연구)

  • Lee, Jung-In;Kim, Tae-Wan;Kwak, Jae-Seob;Jung, Young-Deug
    • Design & Manufacturing
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    • v.6 no.2
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    • pp.70-73
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    • 2012
  • Drill process is usually used to manufacture a industry about processing, Therefore, the burr problem is very significant, The burrs took place when drill process. And then, sometimes, the burrs are often caused of some problems during automatic such as no good quality products and having good surface roughness products. And also, this paper had some experiments using magnesium. Specially, the magnesium is one of the non-ferromagnetic materials. Magnesium has attracted a lot of interest for using the industry. They offer a possible alternative to steel and aluminum in automotive and aero industries to satisfy the lightweight requirement. also, magnesium has good specific strength and absorbs vibration in occurring working process. So, it has good quality of product processing. And then, it is one of the lightest materials being used to electronic product's cases and automotive because of lightweight and miniaturization. But this material has not widely used all of the industry due to its natural property. If the magnesium is contacted water, it will cause the exploration. But, nowadays many of people study magnesium to safe their experiment and to widely use this industry.

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Availability of Alkaline ionic Water as a Cooking Water (알칼리성 이온수의 조리용수로서의 이용)

  • O, Seung-Hui;Ha, Tae-Ik;Jang, Myeong-Ho
    • The Korean Journal of Food And Nutrition
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    • v.6 no.1
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    • pp.8-15
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    • 1993
  • We have examined the utility of alkaline ionic water for processing water In order to compare with piped tap water in cooking rice, making kimchi, making bean curd, raising bean sprouts and parboiling spinach. And we have estimated the quality of them. The result of the examination was as follow. A rice cooked with alkaline ionic water had pale yellow color, and had good quality in polish, viscocity, taste, odour and retrogradation as compared with a rice cooked of piped tap water. In the case of a water kimchi, refreshing taste and other kinds of taste were good. Unpleasant taste and smell have decreased. Fresh colour of a Chinese cabbage were maintained long because of the prevention of destruction of chlorophyll. In the case of bean sprouts, sprouting rate was promoted up to 2∼3% during the period of 2∼3 days as compared with that treated with piped tap water And the growth state was good and the contents of vitamin C were high as compared with those with piped tap water. In the case of parboiling of green spinach, the alkaline ionic water helped keeping the chlorophyll of spinach. In the case of bean curd, soft taste, polish, smell and total taste were good. The Utility value of alkaline ionic water for the processing of soft bean curd was recognized by making it soften.

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Cognition, Attitude and Purchasing Experience of SPA Brands by Types of Fashion Lifestyle (패션라이프스타일 유형에 따른 SPA 브랜드 인지, 태도 및 구매경험에 관한 연구)

  • Park, Kwang Hee
    • Fashion & Textile Research Journal
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    • v.16 no.4
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    • pp.604-613
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    • 2014
  • The purposes of this study were to classify respondents by their fashion lifestyle and to investigate the differences in cognition, attitude and purchasing experience of SPA brands among fashion lifestyle groups. The convenience sample was drawn from females between the ages of 20 and 39 who lived in Daegu and Gyeongbuk regions from November $1^{st}$ and $15^{th}$ 2012. Descriptive statistics, cluster analysis, ANOVA, Tukey test, and ${\chi}^2$ test were applied to analyze data from 255 respondents. Four clusters (fashion-oriented group, fashion indifferent group, conservative individuality-oriented group, conservative practicality-oriented group) were developed by 16 fashion lifestyle items. The attitude toward SPA brand was classified by six factors(fashionability/variety, good location, good quality, diverse promotions, low price, limited number of merchandise, sales person's information). There were significant differences in cognition, five attitude factors (fashionability/variety, good location, good quality, low price, limited number of merchandise) and purchasing experience of SPA brands among types of fashion lifestyle. While the fashion-oriented group had the highest scores of cognition, attitude and purchasing experience of SPA brands, the fashion indifferent group or the conservative practicality-oriented group had the lowest scores. There were significant differences in age and marital status among the four groups while there were no significant differences in marital status, family monthly income, and job.

A study on micro-deburring of thin magnesium plate for application of electronic products (마그네슘 박판의 전자부품 적용을 위한 마이크로 디버링에 관한 연구)

  • Lee, Jung-In;Kim, Tae-Wan;Kwak, Jae-Seob;Jung, Young-Deug
    • 한국금형공학회:학술대회논문집
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    • 2008.06a
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    • pp.51-54
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    • 2008
  • Drill process is usually used to manufacture a industry about processing, Therefore, the burr problem is very significant, The burrs took place when drill process. And then, sometimes, the burrs are often caused of some problems during automatic such as no good quality products and having good surface roughness products. And also, this paper had some experiments using magnesium. Specially, the magnesium is one of the non-ferromagnetic materials. Magnesium has attracted a lot of interest for using the industry. They offer a possible alternative to steel and aluminum in automotive and aero industries to satisfy the lightweight requirement. also, magnesium has good specific strength and absorbs vibration in occurring working process. So, it has good quality of product processing. And then, it is one of the lightest materials being used to electronic product's cases and automotive because of lightweight and miniaturization. But this material has not widely used all of the industry due to its natural property. If the magnesium is contacted water, it will cause the exploration. But, nowadays many of people study magnesium to safe their experiment and to widely use this industry.

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Characteristics of Good Science Teachers and Preservice Teacher Education Curriculum Percevied by Secondary Teachers (현직 교사들이 바라는 중등과학교사의 특성과 사전교사교육과정)

  • Park, Yune-Bae
    • Journal of The Korean Association For Science Education
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    • v.12 no.1
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    • pp.103-118
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    • 1992
  • Quality control of science teachers seems to be one of the most important tasks to improve the quality of science education in Korea. The purposes of this study, as a survey, were to identify characteristics of good science teachers and to make an outline of preservice teacher education curriculum for cultivating the characteristics from inserivce secondary science teachers. A questionnaire was developed for this study and distributed to 176 inservice teachers. It had three parts: 1) characteristics of good science teachers, 2) weights of preservice curriclum areas, and 3) weights of college courses. The means and standard deviations of teachers' responses were calculated. To test the differences between teacher variables, t-tests were executed. The inservice teachers perceived that the junior-high school teacher's characteristics should be different from the senior-high school teacher's. Characteristics, such as enthusiasm toward teaching or students, subject knowledge, content selection and organizing skill, teaching techniques, and scientific worldview were ranked within top five of good science teacher's chracteristics. The teachers' perception about preservice curriculum were as follows: 1) present weight of liberal arts area should be reduced: 2) weight of content area for junior-high school teachers should be different from that for senior-high school teachers: 3) present weight of pedagogy area should be increased: 4) present weight of science education area should be increased: and 5) many courses in pedagogy and sciencd education areas need to be changed, Based on the data and disussion, a conceptual model for preservice teacher education curriculum was proposed.

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Ideology and Reality in Health Policy (의료에 대한 이념과 정책)

  • Lee, Kyu-Sik
    • Health Policy and Management
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    • v.17 no.3
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    • pp.106-128
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    • 2007
  • The Korean health care system is under great controversy. Over the last 30 years, main goal of health policies was to pursue equal access of health care services. However, another goal of health policies laid on efficiency and Quality of care, it had lower priorities. Superficially, controversy stems from priority setting among goals of health care system, equity, efficiency and quality. At a deeper level, arguments arise from disagreement and confusion about the values of Korean health care system. One of the value spectrums believes that health care is the basic right of human beings, therefore it should be produced and distributed on need approach, and needs are known to be decided by professionals. If we accept need approach, health care is a pubic good. Another value of spectrums considers that health care should be distributed on demand approach. Demand approach means that health care is a consumption good on the positive economics, while normative judgement believes that health care is a public good. In equity aspect, health care is considered as a public good. Over the last several years, some of scholars proposed health care reform based on the principle of competition which is based on demand approach. Others argue that the competition principle based on demand approach is not appropriate for the reform proposal, because health care has to be approached on need base. If we do not make explicit values we should adopt, consensus building for reform is nearly impossible. From this perspective, this article will review an ideology and reality in health policies in Korea.

The conciousness of primary school children and their parents about school food service and food preference of children in Korea and Japan (한.일 양국 초등학교 아동과 학부모의 학교급식에 관한 의식 및 아동의 식품기호도 비교연구)

  • Yoo, Young-Sang
    • Journal of the Korean Society of Food Culture
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    • v.11 no.1
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    • pp.13-21
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    • 1996
  • To find out the reference data of the school food service system, I serveyed four primary schools in Seoul, Korea and Nara, Japan respectively. The school children and their parents of whom arbitrary selected two classes among each primary school, were taken the questionaire about the present school food service system and their favorate food. The results were as follows; 1) 74.8% of Korean and Japanese children, and 92.5% of their parents were in favor of school food service. 2) Korean childrin wanted more amount of food and less salty taste. 3) Korean and Japanese children and their parents believed that the school food service system correct children's unbalanced diet. 4) Korean children wished more kinds of foods, western-styled cooking and that the food would be served in warm state. 5) Korean parents wanted that school food service system should be natural and better quality food material, and teacher should educate good eating habit. 6) Korean school children prefer yogurt, cuttle-fish, chicken, bean-curd, tomato, orange, dried laver, sweet potato, pine-mushroom in each food group. In conclusion, school food service system should be enough to meet children's good nutrition status, and the menu would be selected with consideration of children's preference and Korean traditional diet habit. Good table manner and eating all kinds of foods should be targht by school food service system as well as preparing good quality of food.

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GOOD LABORATORY PRACTICE -PRINCIPLES AND PRESENT STATUS IN JAPAN

  • Omori, Yoshihito
    • Toxicological Research
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    • v.1 no.1
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    • pp.31-41
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    • 1985
  • The Japanese Good Laboratory Practice (GLP) Standard on Drugs was finalized as a guideline and implemented in April, 1983. This standard is intended to ensure the quality and integrity of the data from nonclinical toxicity studies submitted to the Ministry of Health and Welfare in support of applications for approval to manufacture or import new drugs or to be used in the reevaluation of previously approved drugs. The standard includes a guideline for organizational matters, personnel, facility, equipment, testing operation, documentation and conduct of studies. Principles and influences of implementation of Japanese GLP will be discussed briefly in comparison with foreign GLPs.

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Development of a Portable Quality Evaluation System for Bee-honeys by Using Near Infrared Spectroscopy (근적외 분광법을 응용한 휴대용 벌꿀 품질 평가 장치 개발)

  • Choi, Chang-Hyun;Kim, Jong-Hun;Kwon, Ki-Hyun;Kim, Yong-Joo
    • Food Science and Preservation
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    • v.18 no.2
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    • pp.156-164
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    • 2011
  • This study was conducted to develop a portable quality evaluation system of bee-honey by near infrared spectroscopic technique. Two kinds of bee-honeys from acacia and polyflower sources were tested in this study. The system consists of power supply, tungsten-halogen lamp, detector, and optical fiber probe. Performance of the system was analyzed by comparing the prediction accuracy of the laboratory spectrophotometer. Total of 346 spectra was divided into a calibration set and a prediction set. The PLS (Partial Least Squares) models were developed to predict the quality parameters of bee-honeys. Reflectance spectra, moisture contents, ash, invert sugar, sucrose, F/G ratio, HMF(hydroxy methyl furfural), and $C^{12}/C^{13}$ ratio of honeys were measured. The PLS models of the laboratory spectrophotometer showed good relationships between predicted and measured quality parameters of honeys in the wavelength range of 1.100~2.200 nm. The PLS analysis of the portable quality evaluation system showed good relationships between predicted and measured quality parameters of honeys in the wavelength range of 1.100~1.300 nm and 1.400~1.700 nm. The results showed the feasibility of the portable quality evaluation system to determine the quality parameters of bee-honey in the field during harvesting.

Fertilization and embryo quality of mature oocytes with specific morphological abnormalities

  • Yu, Eun Jeong;Ahn, Hyojeong;Lee, Jang Mi;Jee, Byung Chul;Kim, Seok Hyun
    • Clinical and Experimental Reproductive Medicine
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    • v.42 no.4
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    • pp.156-162
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    • 2015
  • Objective: To investigate fertilization and embryo quality of dysmorphic mature oocytes with specific morphological abnormalities obtained from intracytoplasmic sperm injection (ICSI). Methods: The fertilization rate (FR) and embryo quality were compared among 58 dysmorphic and 42 normal form oocytes (control 1) obtained from 35 consecutive ICSI cycles, each of which yielded at least one dysmorphic mature oocyte, performed over a period of 5 years. The FR and embryo quality of 441 normal form oocytes from another 119 ICSI cycles that did not involve dysmorphic oocytes served as control 2. Dysmorphic oocytes were classified as having a dark cytoplasm, cytoplasmic granularity, cytoplasmic vacuoles, refractile bodies in the cytoplasm, smooth endoplasmic reticulum in the cytoplasm, an oval shape, an abnormal zona pellucida, a large perivitelline space, debris in the perivitelline space, or an abnormal polar body (PB). Results: The overall FR was significantly lower in dysmorphic oocytes than in normal form oocytes in both the control 1 and control 2 groups. However, embryo quality in the dysmorphic oocyte group and the normal form oocyte groups at day 3 was similar. The FR and embryo quality were similar in the oocyte groups with a single abnormality and multiple abnormalities. Specific abnormalities related with a higher percentage of top-quality embryos were dark cytoplasm (66.7%), abnormal PB (50%), and cytoplasmic vacuoles (25%). Conclusion: The fertilization potential of dysmorphic oocytes in our study was lower, but their subsequent embryonic development and embryo quality was relatively good. We were able to define several specific abnormalities related with good or poor embryo quality.