• 암석학회지
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• 제14권4호
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• pp.237-250
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• 2005

ICP-MS로 화강암질 암석내 희토류원소의 함량 분석시 표준시료의 선택이 어느 정도 영향을 주는 지를 밝혀내기 위해, 상업용 표준시료(ACCU-standard, No. Cal-1), 화강암의 한국산 표준시료(KG-1), 미국산 표준시료(G-2), 일본산 표준시료(JC-1a, JC-2)를 각각 기준시료로 하여 각각의 희토류원소 함량을 측정하였다. 실험결과에 의하면, 경희토류(La-Gd) 분포도는 표준시료의 변화에 관계없이 대체적으로 추천값과 측정값 모두 일치하였다. 그러나 G-2 혹은 JG-2를 기준으로 측정했을 시, 다른 표준시료의 추천값과 측정값에 의한 중희토류(Gd-Lu)의 분포도는 많은 차이가 발생되었다. 이는 표준시료의 추천값의 오류 혹은 표준시료 암석의 지구화학적 특성에 기인된다. KG-1 혹은 JG-1a를 기준시료로 하여 희토류원소 함량을 측정했을 경우에는 G-2나 JG-2를 기준시료로 했을 때보다 추천값과 측정값에 의한 희토류원소의 분포도의 어긋남이 비교적 약한 편이다. 이는 국내 화강암류의 희토류원소 함량분석에 있어서의 표준시료로서 KG-1 혹은 JG-1a가 보다 더 유용함을 지시해준다.

• 한국막학회:학술대회논문집
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• 한국막학회 1997년도 제5회 하계 Workshop (97 한,카 국제공동 Workshop, 고도 수처리를 위한 막분리 공정)
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• pp.1-20
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• 1997

The present standard of drinking water quality is not reached to the guidelines of WHO and US EPA recommended. The appraisal of safety is not appropriate by the results of intermittent and limitted analysis. 45 items of drinking water quality are regulated in the Korean standard and 9 items for inspection designated by Seoul City. This report is the results of analysis of the water quality in the water stations of Seoul which are concerned with the items of Korean water quality standard and the priolity pollutnats recommended by WHO. In the results, 45 items of water quality, and the priolity pollutants were not exceeded to the standard and criteria, while DDT, heptachlor-epoxide, THMs, benzo(a)pyrene, Ba, Al, Gross beta, $^{226}$Ra, $^{90}$Sr were detected, the levels were not exceeded to the WHO guidelines. In ordes to evalute the safety of drinking water quality, besides of the existed items of standard, new hazardouse pollutants should be considered monitored continenously. For the regulation of hazardous pollutants, it may be introduced from the risk assessment. According to the relevant assessment, the acceptable risk of pollutants estimated could be applied to set the water quality standard or recommendations or quidelines as well as the number of monitoring.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2006년도 춘계학술발표대회 논문집
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• pp.268-271
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• 2006

The purpose of this study was to identify the influence of living factors on TVOC(Total Volatile Organic Compounds) concentrations for newly-built apartments. The field measurements of TVOC concentrations were made totally 30 times(5 times per one subject house) in six apartment units in which residents recently moved. Those apartments authorized its business approval before May 2004, the Act of Indoor Air auality Management for multi-use facilities. The findings were as follows: The TVOC concentrations of the measured subject apartments ranged from about 1/10 of the recommended standard for multi-use facilities($400{\mu}g/m^3$) to up to 90 times as high as the standard. Since then, the Recommended Standard of Indoor Air Quality Management for newly-built apartment house was announced in December 2005. In accordance with this standard($2390{\mu}g/m^3$) it ranged from about 1/100 to up to 15 times as high as the standard. The subject house whose TVOC concentrations reduced below the recommendation standard in the shortest period had the largest amount of ventilation (all the windows were open for ventilation in the past three months) among ail measured houses. The reason of another house whose TVOC concentrations were much higher than the rest was fronted with new furniture in the room. It's recommended that they should open all the windows for at least three months for ventilation in newly-built houses, and it would be better to avoid remodeling than needs be.

• 한국실내디자인학회논문집
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• 제15권4호
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• pp.129-137
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• 2006

The purpose of this study was to identify the influence of living factors on TVOC(Total Volatile Organic Compounds) concentrations and personal factors to reduce the Sick House Syndrome for newly-built apartments. The field measurements of TVOC concentrations were made totally 30 times(5 times per one subject house) in six apartment units in which residents recently moved. Those apartments authorized its business approval before May 2004, the Act of Indoor Air Quality Management for multi-use facilities. The Questionnaire surveys of residents' subjective responses on the Sick House Syndrome were carried out in 2nd measurement of each house. Respondents consisted of 20 residents living in the measured houses. The findings were as follows: The TVOC concentrations of the measured subject apartments ranged from about 1/10 of the recommended standard for multi-use facilities($400{\mu}g/m^3$) to up to 90 times as high as the standard. Since then, the Recommended Standard of Indoor Air Quality Management for newly-built apartment house was announced in December 2005. In accordance with this standard($2390{\mu}g/m^3$) it ranged from about 1/100 to up to 15 times as high as the standard. The subject house whose TVOC concentrations reduced below the recommendation standard in the shortest period had the largest amount of ventilation (all the windows were open for ventilation in the past three months) among all measured houses. The reason of another house whose TVOC concentrations were much higher than the rest was fronted with new furniture in the room. There turned out to be no apparent relations between the TVOC concentrations and the residents' individual responses of Sick House Syndrome. The responses were serious in those who stayed in their new houses for a long period or had disease like allergy. It's recommended that they should open all the windows for at least three months for ventilation in newly-built houses, and it would be better to avoid remodeling than needs be.

• Clinical and Experimental Pediatrics
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• 제49권1호
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• pp.14-17
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• 2006

Infants who are born prematurely or with low birth weight should be immunized at the same postnatal chronologic age. They should receive BCG, DTaP, IPV vaccines according to the same recommended schedule as full term infants. Hepatitis B vaccine schedule is modified when hepatitis B vaccine is administered a infant with birth weight less than 2,000 g. The recommended standard dose of each vaccine should be administered. Proportion of children experiencing vaccine-related adverse events dose not differ between full-term and preterm infants. Immunization with routinely recommended childhood vaccines is safe for preterm and low birth weight infants.

• 조명전기설비학회논문지
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• 제28권4호
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• pp.1-8
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• 2014

This study compared the recommended levels of illumination for housing. KS Recommended Levels of Illumination (KS A 3011) in Korea, Recommended Levels of Illumination (GB 50034-2004) in China and Recommended Levels of Illumination (JIS Z 9110) in Japan are compared. The results are as below. First, recommended levels of illumination used in Korea China Japan are suggested by different locations and activities. However, classification for application scope is set differently. There are 10 areas for classification used in Korea, 5 areas in China, and 13 areas in China. When medium levels for classification are included as classification level, total of 15 areas are used for classification in China. Second, when considering there are 15 areas of application scope in China for recommended levels of illumination, there are 7 areas that are commonly used in Korea China Japan. 7 areas include stadium, factories, hospitals, office, shopping center, houses and hospitals. Third, working surface is considered as the height for recommended levels of illumination in Korea China Japan. Korea and Japan consider all working positions, standing and sitting position, when deciding the height. However, China only considers the standing position. Fourth, application scope for recommended levels of illumination for housing are classified in 16 areas in Korea, 5 in China and 18 in Japan. Thus, the application scope for recommended levels of illumination in housing in Korea is similar to Japan. However, there are only 5 areas used in China such as living room, bedroom, dining room, kitchen and sanitary room. Fifth, recommended levels of illumination is classified in 3 levels such as Lowest-Moderate-Highest while China and Japan only have standard recommended levels of illumination. Sixth, when observing recommended levels of illumination by type of activities, Japan classified the activities in greatest detail followed by Korea and then China. Seventh, Recommended levels of illumination differs by each country.

• 한국문헌정보학회지
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• 제46권1호
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• pp.55-76
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• 2012

어느 국가를 불문하고 모든 공공도서관은 시설, 장서, 예산을 필요로 하지만 그 성공의 여부는 지역사회에 최고 수준의 서비스를 제공하는 직원에 의해 결정된다. 그러므로 공공도서관은 적정수의 상근직원을 확보해야 한다. 이러한 노동력을 보증하기 위하여 본 연구는 국내 공공도서관의 직원배치에 관한 법적 및 권장기준의 법리적 정당성, 논리적 타당성, 현실적 적합성과 유용성을 분석하고, 직원배치를 위한 결정변수로서의 건물면적과 장서, 법적 봉사대상인구의 구간, 기본인력 배치수준, 봉사대상인구를 감안한 증원인력을 중심으로 직원기준의 개선안을 제시하였다.

• Geomechanics and Engineering
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• 제31권6호
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• pp. 583-597
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• 2022

Frost heave can cause uneven ground uplift that may damage geo-infrastructure. To assist damage-prevention strategies, standard frost heave testing methods and frost susceptibility criteria have been established and used in various countries. ASTM International standard testing method is potentially the most useful standard, as abundant experimental data have been acquired through its use. ASTM International provides detailed recommendations, but the method is expensive and laborious because of the complex testing procedure requiring a freezing chamber. A simple frost heave testing method using a temperature-controllable cell has been proposed to overcome these difficulties, but it has not yet been established whether a temperature-controllable cell can adequately replace the ASTM International recommended apparatus. This paper reviews the applicability of the ASTM International testing method using the temperature-controllable cell. Freezing tests are compared using various soil mixtures with and without delivering blow to depress the freezing point (as recommended by ASTM International), and it is established that delivering blow does not affect heave rate, which is the key parameter in successful characterization of frost susceptibility. As the freezing temperature decreases, the duration of supercooling of pore water shortens or is eliminated; i.e., thermal shock with a sufficiently low freezing temperature can minimize or possibly eliminate supercooling.

• 대한가정학회지
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• 제9권2호
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• pp.17-29
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• 1971

Korean foods sold restrant and hotel accompaines so many kinds of side dishes. The menues never considered on the nutritional standpoint nor the volume that can be eaten by customers. The purpose of this study is to simplify and improve the menu of Korean foods sold in restrant. To find out the problem and the method of the betterment Korean food sold in restrant. The survey study was made for 100 restrants in Seoul city. Ther average number of side dish of the restrant food was 23. The average amount number of the side dish was 31 and smallest number was 4. The average amount of food served was 979 grams and the average number of food taken by people was 698 grams. The average percentage of intake of food was 62%. Protein Content of the foods sold restrant was from 54% to 240% over the recommended dietary allowances. Protein intake also exceeded from 19% to 147% of recommended dietary allowances. Age of the customers were surveyed to set up the standard amount of the nutrients. About 68% of the customers were from 30 to 40 years of age in the day time (lunch), whereas about 72% were from 20 to 30 years of age in the evening (supper). From the results of the survey study, two nutritional standard were decided to be used. One is the recommended dietary allowences of 25 years of man (reference man), and the other is that of 45 years of man. The actual standards are as follows : Standard 1 (25 years of man) Calories-900~1000Cal Protein-25-30g Vegetables-200~250g (include yellow, green vegetable), Amount of food-about 800g Standard 2 (45 years of man) Calories-700~800Cal Protein-25~30g Vegetables-150~200g (include yellow, green vegetable) Amount of food-700g The kinds of food recommended to be sold in the restrant are as follows : 1. Pansang-is a formal method of korean table setting 3 types, 7 chup, 5 chup, and 3 chup were studied and made, 2. Table for the quest with drink-2 types of table setting, 9 kinds of food and 7 kinds of foods were studied. 3. free meal-in this table, one pig protein dish with kimchi, one vegetable, and one salty flsh will be served, 19 kinds of foods were studies. 4. One dish meal-in one large dish, rice will be served with side dishes soup and kimch will be accompanied, 10 kinds of foods were studied. 5. Cafeteria style foods-one serving of food will be served in small dishes Customers should select the food want to eat.

• 한국지진공학회논문집
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• 제22권1호
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• pp.1-14
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• 2018

In this study, we develop and propose damping correction factors for the Korean standard design spectra. The newly proposed Korean standard design spectra has been given only for 5% damping ratio. But in practice, engineers need design spectra for damping values other than 5%. To obtain design spectra for various damping values from the standard spectra, damping correction factors are derived. These factors modify the shape of design spectra in accordance with the damping ratio. Response spectra for various damping values are calculated from the earthquake records that had been used to calculate standard design spectra. They consist of 55 records from 18 earthquakes occurred in overseas intraplate regions and Korea. The regressed spectra for the damping values ranging from 0.5% to 50 % are compared with standard spectra at three regions acceleration, velocity and displacement sensitive regions. The regression analysis of these data rendered formula for damping correction factors. Finally, a single formula for damping correction factors is recommended that is valid for both horizontal and vertical design spectra and that is applicable to the entire range of periods. One thing to note that recommended damping correction factors is valid for the design spectrum of the rock grounds because the design spectra was developed based on the earthquake records of the rock ground.