• Food Science of Animal Resources
• /
• v.22 no.1
• /
• pp.50-54
• /
• 2002

The aim of this work to determine the formation of lactulose during heat treatment process as a contribution to the estabilishment of limits of chemical indicators for different types of heat processed milk and analyze of lactulose for the reconstituted milk added samples. The HTST(75$\^{C}$/15s) and UHT(130$\^{C}$/2∼3s) treatment realized with a pilot plant and heat-treated samples were stroed at 4, 10, 30$\^{C}$ for 4 weeks. Changes in lactulose was evaluated at 7 days intervals. The other heat treatment was sealed in glass tube and heated at 75$\^{C}$ for 10 to 120s and heated at 130$\^{C}$ for 2 to 60s in a thermostatically controlled constant temperature bath of glycerol. The reconstituted milk was made with full fat dry milk that reconstituted with deionized water to 10% total solid, and was added to milk at 10, 20, 30% respectively. The samples processed with a HTST pilot plant showed that lactulose was contained at 1.47∼1.52mg/10()ml and 8.19 ∼8.32mg/100ml for UHT-treated samples. Changes in the lactulose content of heat-treated samples during storage at 4 and 10$\^{C}$ for 4 weeks caused a slight increase, however a noticeable increase was observed at 30$\^{C}$ for 4 week. The glass tube samples showed that high correlations between relative increase in content of lactulose and increasing processing times(75$\^{C}$ : r = 0.986, 130$\^{C}$ : r = 0.987, respectively). Added with reconstituted milk would cause a increase of the lactulose content linear with increasing addition amount(r = 0.982). This results observed for lactulose in commercial milk samples would applied to the detection of chemical changes during heat treatment and illegal use of reconstituted milk.

• Journal of Animal Science and Technology
• /
• v.57 no.8
• /
• pp.28.1-28.7
• /
• 2015

Background: The physiologic characteristics of the cashmere trait and many of the differentially expressed genes relevant to hair cycling have been extensively studied, whereas genes involved in the prenatal development of hair follicles have been poorly investigated in cashmere goats. The aim of this study, therefore, was to quantify the time-course changes in the expressions of $TR{\alpha}$ and CRABPII genes in the fetal skin of Chinese cashmere goats at the multiple embryonic days (E70, E75, E80, E90, E100, E120 and E130) using real-time quantitative PCR (RT-qPCR). Results: RT-qPCR showed that $TR{\alpha}$ was expressed at E70 with relatively high level and then slightly decreased (E75, E80, and E90). The highest expression of $TR{\alpha}$ mRNA was revealed at E130 (P > 0.05). The expression pattern of CRABPII mRNA showed an 'up-down-up' trend, which revealed a significantly highest expression at E75 (P < 0.05) and was down-regulated during E80 to E120 (P < 0.05) and mildly increased at E130, subsequently. Conclusion: This study demonstrated that $TR{\alpha}$ and CRABPII genes expressed in different levels during prenatal development of cashmere. The present study will be helpful to provide the comprehensive understanding of $TR{\alpha}$ and CRABPII genes expressions during cashmere formation and lay the ground for further studies on their roles in regulation of cashmere growth in goats.

• The Korean Journal of Health Service Management
• /
• v.11 no.1
• /
• pp.117-130
• /
• 2017

Objectives : In this study, 3,107 patients were used to evaluate the impact based on raw data of 2014 and the health status and medical expenses income quintile was collected and data was analyzed. Methods : Analysis method was the average comparison, ANOVA, subjected to a multiple logistic regression analysis, the statistical test was the t-test and the scheffe post verification. Results : Gender(p<.000), age(p<.000), marital status(p<.000) educational status (p<.000), easement(p<.000), medication(p<.000), subjective health status(p<.005) were analyzed. First quintile identified that the highest amount was spent in the Chungcheong region, the 2nd quintile showed that the highest output was in the Gyeongsang region. The 3rd and 4th quintiles indicated that the highest expenditure was in the Seoul metropolitan region. The 5th quintile showed that the Chungcheong was the highest once again and the Jeolla region was the lowest in terms of expediture. Conclusions : Future medical research on income will require the government's Big Data collection to create the primary basis for policy making in order to improve the efficiency, effectiveness and equity of medicine spending.

• Journal of the Korean Institute of Telematics and Electronics A
• /
• v.33A no.10
• /
• pp.130-138
• /
• 1996

The size of a device needs to scale down to increase its integrity and speed. As the size of the device is reduced, the hot-carrier degradation that severely effects on device reliabilty is concerned. In this paper, sub-micron buried-channel P-MOSFETs were fabircated, and the hot-carrier effects were invetigated. Also the hot-carrier effect in the buired-channel P-MOSFETs and the surface-channel P-MOSFETs were compared with simulation programs using SUPREM-4 and MINIMOS-4. This paper showed that the electric characteristics of sub-micron P-MOSFET are different from those of N-MOSFET. Also it showed that the punchthrough voltage ( $V_{pt}$ ) was abruptly drop after applying the stress and became almost 0V when the channel lengths were shorter than 0.6.mu.m. The lower punchthrough voltage causes the device to operte poorly by the deterioration of cut-off characteries in the switching mode. We can conclude that the buried channel P-MOSFET for CMOS circuits has a limit of the channel length to be around 0.6.mu.m.

• Speech Sciences
• /
• v.9 no.4
• /
• pp.113-130
• /
• 2002

Measurements were made of pressure rise time (PoRT), voice cessation time, flattened peak intraoral air pressure (Po), pressure static time (PoST), pressure-fall time and the duration of oral closure as four English speakers uttered isolated nonsense $V_{1}CV_{2}$ words containing /b/ and /p/ ($V_{1}=V_{2}$ and the V was /$\alpha$/), with stress on either $V_{1}orV_{2}$ alternately. The hypothesis tested was: The tense stop consonant. will be characterized either by a higher Po or a longer PoST, and/or by both against lax. Findings: (1) PoRT was significantly greater in /b/ than /p/, (2) the voiceless stop /p/ produced generally greater mean Po, averaged across five tokens, than its voiced counterpart /b/, but statistically insignificant, and (3) altogether, across stress, tokens and subjects, the difference in the calculated pressure static time (PoSTc), i.e., PoST + PoRT, between /p/ and /b/ was highly significant (p $\leq$ 0.003). Although further investigations remain to be taken, the results strongly supported the linguistic hypothesis of tense-lax distinction, with /b/ being lax and /p/ tense. Airflow resistance at the glottis and supraglottal air volume are assumed to be responsible for much of difference in PoRT between /p/ and /b/. The PoSTc reflecting, although indirectly, the respiratory efforts during the oral closure of a stop, was a convincing phonetic parameter of the consonantal tenseness based on respiratory efforts. The effects of stress on Po and PoSTc were inconsistent, and the shorter PoRT than consonantal constriction interval was always accompanied by Po and PoST.

• Journal of muscle and joint health
• /
• v.26 no.2
• /
• pp.120-130
• /
• 2019

Purpose: The purpose of this study was to investigate the predictors of tuberculosis (TB) drugs in health care workers diagnosed with latent tuberculosis Infection (LTBI). Methods: This study was a descriptive correlation study. Data were collected by using a self-report questionnaire. The collected data were analyzed by -test, t-test, and logistic regression analysis. Results: There were involved 160 participants, 35 (21.9%) who took the TB drugs, and 125 (73.8%) who did not take the TB drugs. The predictors on taking TB drugs in health care workers with LTBI were subjective norms (OR=3.33, p<.001), perceived sensitivity (OR=2.67, p=.026), perceived barrier (OR=0.14, p=.014), and unmarried (OR=4.69, p=.006) than married, health care worker category 2 group (OR=5.84, p=.015) and 1 group (OR=4.25, p=.022) than 3, 4 group, sleep over 7 hours (OR=4.11, p=.022) than less 7 hours sleep. Conclusion: In order to promote the use of TB drugs in health care workers with LTBI, it is necessary that take intervention strategies to increase the subjective norms and perceived sensitivity and to decrease the perceived barriers.

• Child Health Nursing Research
• /
• v.29 no.4
• /
• pp.300-312
• /
• 2023

Purpose: This study investigated knowledge of atopic dermatitis and food allergies, as well as health information literacy, among North Korean refugee mothers with preschool-age children and explored how these variables were related to participants' characteristics. Methods: A descriptive study design was used. Data from 130 North Korean refugee mothers were collected between January and March 2023. Results: The mean scores were 14.48 of 30 for atopic dermatitis knowledge; 2.77 of 10 for food allergy knowledge, and 56.95 of 80 for health information literacy. Significant differences were observed in knowledge of atopic dermatitis based on breastfeeding duration (F=4.12, p=.009), and in knowledge of food allergies based on mixed feeding (F=3.11, p=.049). Health information literacy showed significant relationships with education level (F=3.76, p=.026), occupation (F=3.99, p=.021), checking nutritional information (t=2.91, p=.004), mixed feeding (F=4.50, p=.014), and atopic dermatitis diagnosis (t=6.86, p=.001). Significant positive correlations were observed between atopic dermatitis knowledge, food allergy knowledge, and health information literacy. Conclusion: Personalized educational programs should be implemented to improve awareness of allergies and health information literacy among North Korean refugee mothers, which would help them find, evaluate, and understand health-related information. These programs should focus on providing nutrition and dietary education to promote healthy growth in children and prevent diseases.

• ETRI Journal
• /
• v.31 no.5
• /
• pp.601-603
• /
• 2009

This letter presents a high performance 2.4 GHz two-stage power amplifier (PA) operating in the temperature range from $-30^{\circ}C$ to $+85^{\circ}C$ for IEEE 802.11g, wireless local area network application. It is implemented in InGaP/GaAs hetero-junction bipolar transistor technology and has a bias circuit employing a temperature compensation technique for error vector magnitude (EVM) performance. The technique uses a resistor made with a base layer of HBT. The design improves EVM performance in cold temperatures by increasing current. The implemented PA has a dynamic EVM of less than 4%, a gain of over 26 dB, and a current less than 130 mA below the output power of 19 dBm across the temperature range from $-30^{\circ}C$ to $+85^{\circ}C$.

• Korean Journal of Microbiology
• /
• v.17 no.2
• /
• pp.72-80
• /
• 1979

24 samples which were incoulated with Aspergillus flavus and Bcillus subtilis and cultured on the steamed soybean media under various conditions-pH, moisture and temperature were-investigated on the production of aflatoxin by the interaction of these two microorganisms. 1) The amount of aflatoxin produced by mixed cultures of Aspergillus flavus and Bacillus subtilis was decreased significantly rather than that of single cultures of Aspergillus flavus. 2) Maximum production of crude aflatoxin was 2,560 ppm $(B_1,\;0.908\;ppm;\;B_2,\;0.261\;ppm;\;G_1,\;1.162\;ppm;\;G_2,\;0.229\;ppm)$ at 30% moisture, pH 5.0 and $20^{\circ}C$, whereas minimum production was 1.107 ppm $(B_1,\;0.341\;ppm;\;B_2,\;0.104\;ppm;\;G_1,\;532\;ppm;\;G_2,\;0.130\;ppm)$ at 63% moisture, pH 9.0 and $40^{\circ}C$.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.04a
• /
• pp.130-132
• /
• 2004

프로세서, 센서 등의 소형화와 저가격화는 어느 곳에서나 유무선 네트웍과 연결되는 편재형 디바이스들의 출연을 가능하게 했다. 이러한 디바이스들은 점점 많은 기능을 가지고 인텔리전트한 기능을 제공하고 있다. 그러나 기존의 상용 RTOS는 특정 제품에의 의존도가 높고, 멀티미디어 응용과 같은 새로운 편재환경에의 요구 사항을 지원하고 있지 않으므로 이러한 환경변화에 적응하는 것이 어렵다. 따라서 소형의 휴대 정보 단말에서부터 홈 서버에 이르기까지 다양한 종류의 편재형 기기에 사용될 수 있는 확장성과 풍부한 기능을 갖춘 표준 실시간 OS의 개발이 필요하다. Qplus-P는 이와 같은 편재형 컴퓨팅을 지원하기 위한 실시간 소프트웨어 플랫폼이다. 이에는 실시간 운영체제 커널, 라이브러리 및 응용, 사용자 개발 도구가 포함된다. 특히 커널은 확장 가능한 구조를 채택하여 다양한 내장형 기기에 적용 가능한 이식성을 지원하며, 사용자 개발 도구는 특정 내장형 기기에서의 OS의 이식을 지원하는 개발 도구로 편리한 사용자 인터페이스를 제공한다.