• Title/Summary/Keyword: Conformity test

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Studies on the Dissolution Rate of Prednisolone Powder and Tablets (Prednisolone분미(粉未) 및 Prednisolone정제(錠劑)의 용출속도(溶出速度)에 관한 연구(硏究))

  • Shin, Im-Sick;Yong, Jae-Ick
    • Journal of Pharmaceutical Investigation
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    • v.4 no.4
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    • pp.26-37
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    • 1974
  • Having measured physical canstant and dissolution rate of prednisolone powder, and tablets, also particle size, particle number of powder disintegration, hardness, friability of prednisolone tablets and having also compared it's interrelationship. We obtained the results as following. 1) Dissolution rate of prednisolone powder was determinded cube root rule and: the slope $({\alpha})$ was $3.1915{\times}10^{-2}$. 2) The tablet used in this study was fourteen kind of prednisolone tablets, two kinds of which were not conformity with prednisolone dissolution rate test of U.S.P. XVIII, but the rest of them were conformity with the same test (t60% was 4.3minute in average) 3) There was no significant interrelationship between disintegration, hardness, friability and dissolution rate of prednisolone tablet used in this study but we recognized the disintegration time was greatly influenced by the dissolution rate.

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KASS Performance Analysis for Operational Test (운용시험을 통한 KASS 성능 분석)

  • Heesung Kim;Minhyuk Son;ByungSeok Lee;Baeckjun Yi
    • Journal of Positioning, Navigation, and Timing
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    • v.13 no.2
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    • pp.167-177
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    • 2024
  • The Korea Augmentation Satellite System (KASS) has been certified by the Ministry of Land, Infrastructure and Transport (MOLIT) and commenced Safety-of-Life (SoL) service at the end of 2023. KASS complies with the APV-I signal-in-space performance requirements defined in the International Civil Aviation Organization (ICAO) Standards and Recommendation Practices (SARPs). The performance of KASS is verified through two steps. In the first step, design conformity from the aspect of performance is verified by both review and analysis of design and simulation. In the second step, operational conformity is tested and assessed by operational testing using real data and a deployed system with operational SWs and configurations. This paper presents a methodology, a procedure and results for the KASS operational testing. Finally, performance degradation events and results by month and region during the operational testing are presented and analyzed.

Thirteen Weeks Repeated Oral Dose Toxicity Study of Oplopanax elatus (Nakai) Nakai Hydrothermal Extract Powder in Sprague-Dawley Rats (Sprague-Dawley 랫드를 이용한 땃두릅나무 열수추출물 분말의 13주 반복 경구투여 독성에 관한 연구)

  • Yoo, Nam Ho;Kwon, Yongsoo;Chun, Hyeon Soo;An, Kyu Sup;Kim, Hye Jin;Ryu, Hyeon Yeol;Lee, So Min;Song, Kyung Seuk;Park, Byung Jun;Kim, Myong Jo
    • Korean Journal of Pharmacognosy
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    • v.50 no.4
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    • pp.260-271
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    • 2019
  • This study aimed to evaluate the safety of Oplopanax elatus (Nakai) Nakai hydrothermal extract powder. It was conducted using male and female Sprague-Dawley (SD) rats. The test group was established with dose of 500 (low-dosage group), 1,000 (medium- dosage group), and 2,000 (high- dosage group) mg/day. These are investigated that number of dead animals, general symptoms, weight changes, food consumption, ophthalmological examination, urinalysis, urine volume, hematological values, plasma coagulation time values, serum biochemical values, absolute organ weight, relative organ weight and histopathological finding during the experiment. As a result of the above, toxicological changes were not observed. Therefore, the non-toxic content of Oplopanax elatus (Nakai) Nakai hydrothermal extract powder is determined to be 2,000 mg/kg/day, and target organ was not observed.

The Influence of Expected Values for Appearance Management on Interest in Make-up and Cosmetics Evaluation Criteria (외모관리 기대가치가 화장관심도와 화장품 선택기준에 미치는 영향)

  • Park, Eunhee;Cho, Hyonju
    • Journal of Fashion Business
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    • v.18 no.1
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    • pp.22-36
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    • 2014
  • The purpose of this study is to examine the influence of expected values for appearance management on interest in make-up and cosmetics evaluation criteria. Questionnaires are being administered to 244 college students from the Deagu Metropolitan City and Kyungbook province. The frequency, factor analysis, reliability analysis, regression analysis, and t-test are used for data analysis. Expected values of appearance management are categorized into pleasure/satisfaction, other-expectancy, power value and conformity. Interest in make-up factors are found to be leadership in make-up, others-oriented, and appearance satisfactions. Cosmetics evaluation criteria are categorized into 4 factors such as skin suitability, pursuit of utility, non-essential attributes and symbolism. Pleasure/satisfaction, and conformity are the sub-variables of expected values for appearance management and have significant effects on leadership in make-up and others-oriented sub-variables for interest in make-up. Pleasure/satisfaction, and conformity, being the sub-variables of expected values for appearance management, have significant effects on skin suitability, the sub-variables of cosmetics evaluation criteria. And conformity has significant effects on symbolism, the sub-variables of cosmetics evaluation criteria. This indicates that women show high conformity for expected values of appearance management, leadership in make-up and others-oriented sub-variables for interest in make-up, and skin suitability of cosmetics evaluation criteria.

The Difference of Clothing Shopping Orientation in Internet and Offline Stores (인터넷 매장과 오프라인 매장에서의 소비자 의복 쇼핑 성향 차이에 관한 연구)

  • Kim, Sae-Hee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.1
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    • pp.92-103
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    • 2009
  • The study is interested in the consumer's mixed choice of the internet and the offline stores. Therefore the purpose of study is to investigate if the clothing shopping orientation of consumers varies when they shop internet and offline, instead of classifying consumers into internet shoppers and offline shoppers. For the purpose, quantitative survey was carried out using 201 questionnaires from men and women in their twenties. The data were analyzed using factor analysis, Pearson's correlation analysis, Spearman's rank order correlation coefficient, t-test, and frequency analysis. The results are as following. First, the clothing shopping orientation structures of offline and internet stores were different each other. As the result of factor analysis, positive, brand oriented, economic, convenient conformity, convenient impulsive factors were extracted from offline store and rational, enjoying, goal oriented, conformity, brand oriented, convenient impulsive purchase factors were extracted from internet store respectively. Second, as the results of investigating the relationship between the clothing shopping orientation structures of offline and internet stores, positive(off)-enjoying(on), brand oriented(off)-brand oriented(on), convenient conformity(off)-conformity(on) had strong correlation s and the rest were peculiar to the each store type. Specifically, the goal oriented factor peculiar to the internet store was noticeable. Third, as the results of investigating the differences between clothing shopping orientation of offline and internet stores, the ranks of strong orientation dimension were different between two channels. As well, the mean differences were significant in goal oriented, conformity, brand oriented, and convenient impulsive purchase dimensions. This study has the significance that it investigated the variance of clothing shopping orientation according to the mixed selection trend of internet/offline.

Analytic study on arsenic content in plastic materials (플라스틱 소재의 비소 함유량 분석에 관한 연구)

  • Lee, Jae-In;Choi, Zel-Ho;Choi, Ki-In;Ko, Byung-Rae;Choi, In-Suk;Cho, Hun-Sik
    • Analytical Science and Technology
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    • v.25 no.6
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    • pp.402-409
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    • 2012
  • Quantitative analytical condition for arsenic in plastic materials by the flow injection-hydride generation-inductively coupled plasma-atomic emission spectrometry was studied. The plastic samples were dissolved by wet-acid digestion method and microwave-acid digestion method. The reproducibility and accuracy in this method was verified using of certified reference materials(CRMs) CRM-EC680k and CRM-EC681k. The analyical results agrees with certified value within the range of uncertainty. The results of CRM-EC680k wer 4.1~4.3 mg/kg (certified value $4.1{\pm}0.5$ mg/kg), and the results of CRM-EC681k were 28.9~30.6 mg/kg (certified value $29.1{\pm}1.8$ mg/kg).

A Study on Comparison of Density Test Methods for Quality Control of Cement and Mineral Admixture (시멘트 및 혼화재의 품질관리를 위한 밀도 시험방법 비교 연구)

  • Jae-Seung, Lee;Sang-Kyun, Noh;Cheol, Park;Hong-Chul, Shin
    • Journal of the Korean Recycled Construction Resources Institute
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    • v.10 no.4
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    • pp.435-442
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    • 2022
  • In this study, the density of KS L 5110 was compared with that of gas pycnometer and electronic densimeter for efficient density management of cement, blast furnace slag powder and fly ash. Correlation and usability according to the test method were reviewed, and based on the results of the experiment, the availability of alternative test methods was analyzed. As a result of the density test according to test methods, the density of cement, blast furnace slag powder and fly ash tended to decrease in the order of gas pycnometer, KS L 5110 and electronic densimeter. Because the volume range of the sample to be evaluated is different depending on test methods. The coefficient of determination R2 was in the range of 0.71 to 0.93, and the correlation according to test methods showed a relatively good correlation. If correction is applied through correlation, it is analyzed that alternative test methods can be used. As a result of the usability review considering the test procedure, measurement time and coefficient of variation, the gas pycnometer had the simplest test procedure and good reliability. In addition, it is expected that the reproducibility between the testers is relatively high because the skill is not greatly required.

Design Conformance Verification of Military FM Radio Set Automatic Test Equipment (군용 FM 무전기 세트 자동시험장비(ATE) 설계 적합성 검증)

  • Kim, Byung-Jun
    • The Journal of the Korea institute of electronic communication sciences
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    • v.15 no.3
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    • pp.389-396
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    • 2020
  • In order to obtain a good quality product, a proper verification of production/test facilities must be preceded before the quality conformity inspection of the product. Among the various production/test facilities, ATE is widely used in the civilian industry such as the automotive industry, aerospace industry, semiconductor industry today. In addition, ATE is actively used in the defense industry production and performance tests. This paper is the result of systematically verifying the Design Conformance of ATS which is ATE of military FM radio set using various methods. And It is expected to be a good reference at the present time when the design conformity verification procedure for ATE for military supplies is not documented.

An Analysis of Combustion Characteristics of Residential Facilities through Real Fire Tests in a Small Residential Space (소규모 주거 공간 실물화재실험을 통한 적재 가연물의 연소특성 분석)

  • Yang, So Yeon;Moon, Min Ho;Won, Jeong Hun
    • Journal of the Korean Society of Safety
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    • v.37 no.4
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    • pp.73-79
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    • 2022
  • In this study, real fire tests were performed on representative combustibles of residential facilities to analyze the fire behavior and combustion characteristics in a small residential space. The considered combustibles were a sofa, a combination of a desk and a chair, and a combination of a mattress and an electric mat. A compartment space fire test was performed using the room corner test equipment prescribed in the KS F ISO 9705 specification. Three real fire tests were conducted by placing the combustible material inside a small compartment with insulation and finishing materials and by igniting the combustible material. Results showed that the peak heat release rate and peak smoke production rate occurred in the combination of the mattress and electric mat. Furthermore, from the result of the fire rate analysis, it was estimated that the fire risk of the mattress and electric mat combination was the highest, followed by the sofa and thedesk and chair combination.

Korean College Students' Purchase Intention of Foreign Jeans Brands -Applying an Integrated Behavioral Intention Model- (통합적 행동의도모델 적용에 의한 국내 대학생 소비자의 해외 진 브랜드 구매의도 분석)

  • Kang, Ji-Hye;Jin, Byoung-Ho
    • Journal of the Korean Society of Clothing and Textiles
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    • v.34 no.8
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    • pp.1341-1351
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    • 2010
  • The Korean jean market has become increasingly competitive due to the increased imports of global brands. This study is to understand the purchase behaviors of Korean college students toward foreign brand jeans to help Korean jean brands enhance their competitive advantages over foreign brand jeans in the Korean market. Considering perceptions of Korean consumers toward foreign brands and traditional value changes, this study proposed a research model incorporating two extended behavioral intention (BI) models, Lee's modified BI model and Ajzen's theory of planned behavior. To test the research model, a total of 240 valid data sets were collected from college students in Busan, Korea. Structural and measurement models were estimated using LISREL 8.80. Because face saving failed to attain internal validity, the research model was revised to eliminate face saving. The findings indicated that perceived behavioral control had the strongest direct influence on purchase intentions of Korean college students for foreign brand jeans. Group conformity and subjective norm had non-significant direct impacts on purchase intention, whereas group conformity had an indirect impact on purchase intention through attitude. Based on the findings, theoretical and managerial implications were provided.