• Journal of the Korean Society of Food Science and Nutrition
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• v.42 no.6
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• pp.964-968
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• 2013

This study investigated the formation of rice dumpling skins with various food additives to improve their texture. Rice (Millyang260 and Hanarum) was obtained from the Rural Development Administration. Rice was milled through an air classifying mill (ACM), and hydroxypropyl methylcellulose (HPMC), xanthan gum, guar gum, carrageenan, or propylene glycol alginate (PGA) was used as food additives. The effects of hydrocolloids on textural were evaluated and rice dumpling skin prepared with additives showed significantly higher values than the control for cooking properties and texture. The presence of hydrocolloids in rice dumpling skin appeared to decrease its weight and volume after cooking. Textural properties of rice dumpling skin with hydrocolloids were similar to the control regardless of cooking condition.

• The korean journal of orthodontics
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• v.26 no.5 s.58
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• pp.637-645
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• 1996

In non-growing Class III malocclusion, the critical aspects which determine the need of orthognatic surgery are the severity of skeletal discrepancy, incisor inclination, overbile and soft tissue profile. Two-jaw surgery is more effective in correcting severe sagittal, vertical, transverse skeletal discrepancies and facial asymmetry. And more esthetic and stable profile can be achieved by two-jaw surgery Some midfacial deficiency Patients can be treated by Pyramidal Le Fort II osteotomy to maintain infraorbital rim and malar complex and to advance nasomaxillary complex. Others who require advancement of infraorbital rim and malar complex can be treated by quadrangular Le Fort II osteotomy. On the following cases, patients who had represented midfacial deficiency and mandibular prognathism were treated with combined orthodontic-surgical therapy by Le Fort II osteotomy and BSSRO.

• Journal of Nutrition and Health
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• v.36 no.2
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• pp.191-199
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• 2003

This study was conducted to evaluate nutritional status of Korean women of child-bearing age. A comparison was made between 113 non-pregnant and 200 pregnant women. Pregnant women of 24-28 weeks of gestation were recruited from prenatal clinic in Seoul. Nonpregnant women were included college students, nurses, office employers, and sales women. General characteristics, anthropometric measurements, dietary intakes, and hematological values were assessed. There was no difference in mean BMI for nonpregnant and pregnant (pre-gravid) women, which were 20.2 kg/m$^2$and 20.6 kg/m$^2$respectively. The pregnant women showed a tendency of better health-caring behavior, evidenced by stop smoking and drinking, and in taking nutrient supplements. The mean intakes of energy, vitamin A, vitamin B$_2$, calcium, and iron did not meet Korean RDA for adult women. In particular, calcium and iron intakes of both nonpregnant and pregnant women were under 60% of the Korean RDA. Judging by MDA score, dietary quality was better in pregnant than in nonpregnant women. Mean serum values of albumin, total cholesterol, LDL-cholesterol, HDL-cholesterol, Hb, IgA, IgG were in normal range. However, more than 13% of the nonpregnant subjects showed mild hypercholesterolemia (cholesterol > 200 mg/dl) and anemia (Hb < 12.0 g/dl) . The percentage of anemia in pregnant women were much higher; the subject with Hb < 11.0 g/dl were approximately 30%. The pregnant subjects showed significantly higher serum concentrations of triglycerides and cholesterol, and significantly lower concentrations of albumin, IgA, and IgG compared to nonpregnant women. Correlation analysis showed that Hb concentrations were correlated with the intakes of iron- and protein- containing foods such as meat and vegetables. This study strongly suggest that iron-deficient anemia is a major nutrition problem in Korean child-bearing women and this condition is correlated with dietary intakes.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.2
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• pp.66-74
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• 2016

This study examined the effects of nursing information provision using a booklet on the patients' anxiety and uncertainty with an endoscopic submucosal dissection before the procedure, which is a non-equivalent controlled pre-post test designed study. Twenty three patients in a control group received the existing intervention, which is the general education prior to the procedure without standardized format as well as an oral explanation, and 23 patients in the experimental group received nursing information with a booklet developed by the investigator of this study. The collected data were analyzed using a ${\chi}^2$ test and Fisher's exact t-test on SPSS 21.0. The experimental group reported significantly lower anxiety (t=3.319, p=.002) and anxiety behavioral responses (t=3.508, p=.001) than those in the control group. There were no significant differences in uncertainty between the groups (t=.745, p=.460). Nursing information using the booklet is a useful nursing intervention to reduce the anxiety of patients with endoscopic submucosal dissection before the procedure.

• Journal of Digital Convergence
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• v.18 no.2
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• pp.333-342
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• 2020

The purpose of this study was to identify factors influencing elderly care burden of a working family. Methods: A descriptive correlational design was used. Participants was 153 family member of elderly at five nursing facilities. Data were collected through self-reported questionnaires from July to October 2019. Data were analyzed using an independent t-test, one-way ANOVA, Pearson's correlation, and hierarchical multiple regression analysis with the SPSS WIN 25.0 program. Analysis result, explaining 20,8% of the variance, which indicated that subjects for giving care, monthly admission fee, burden of expenses, and satisfaction for fee service were significant predictors of working family's care burden. Various individual characteristics significantly influenced working family's care burden in aspects of emotional, social, economical, and physical burdens. Therefore, interventions to decrease working family's care burden must focus on their individual factors.

• The Korean Journal of Applied Statistics
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• v.18 no.1
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• pp.147-158
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• 2005

Most of the statistical models that real data can be applicable are static in nature, and thus it is not possible to analyze the effect of variations in the real world over time. Usual specification of the models does not produce the length and the time path of the effect even if the effect of an exogenous variation continues for periods of time. In this study, deriving the dynamic inherence from the static structure of the linear model for better utilization, we attempt to apply actual data to compare and analyze the long-run effect of variations in the market variables between the related markets by formulating a simultaneous equation system. Accordingly, it is proved to be possible to obtain efficient analytical results and to derive various useful implications.

• Korean Journal of Organic Agriculture
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• v.20 no.4
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• pp.643-654
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• 2012

We conducted the experiment in order to evaluate the control effect of whitefly using the sticky trap. Both Bemisia tabaci and Trialeurodes vaporariorum were more attracted to yellow sticky trap than white or blue colored traps. When yellow sticky traps were installed in different height around tomato, catches of B. tabaci were not significantly different among the traps and catches of T. vaporariorum on the traps in the upper position were more than lower position. T. vaporariorum was more attracted to trap when host plant is smaller. The attracted number to yellow sticky traps were not significantly different between whiteflies (B. tabaci and T. vaporariorum) and their parasitoids (Encarsia formosa and Eretmocerus mundus). Yellow sticky trap reduced population density of both B. tabaci and T. vaporariorum by more than 80% on tomato nursery in a screen cage. Population density of whiteflies in greenhouse installed yellow sticky traps was less than one third of that in untreated greenhouse.

• Proceedings of the Korean Vacuum Society Conference
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• 2011.02a
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• pp.232-232
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• 2011

DAF는 기존 침전 공정에 비해 뛰어난 정수 품질과 빠른 처리 시간으로 차세대 정수 공정으로 각광 받고 있다. DAF는 기포 생성 방법에 따라 용존 공기 부상법, 분산 공기 부상법, 진공 부상법, 전해 부상법, 미생물학적 부상법 등이 있다. 이 중 가장 많이 쓰이는 방식은 용존 공기 부상법으로, 과포화 상태의 기체와 액체의 혼합액을 압력을 급격히 감소시켜 기포를 발생 시키는 방법이다. 이 방법은 기포의 발생은 많지만 장비의 크기가 거대하고 시설제조 비용이 많이 드는 단점이 있다. 수중에서 발생되는 플라즈마는 그 구조와 메카니즘에 따라 생성되는 버블의 양을 제어할 수 있음을 확인하였다. 모세관 형태의 전극을 이용한 수중 방전은 전원 공급 장치만 있다면 적은 공간으로도 효과적으로 기포를 생성 할 수 있기 때문에, 수중 방전을 이용하여 기포 발생 후 DAF에 적용 가능한지 알아보고자 한다. DAF공정에서 필요한 요인으로는 기포의 크기, 개수, 성분 물질 등이 있는데, 그 중 가장 핵심은 기포의 크기 이다. 그래서 간단한 전원 장치와 리액터 제작 후 방전에 최적화 된 전극으로 기포를 발생시켜 기포의 크기를 측정하였다. 기포의 크기는 전극의 직경과 방전공간의 비율에 따라 제어가 가능함을 확인하였고 평균 기포의 크기는 약 50 ${\mu}m$로서, DAF에 적용 할 수 있는 크기이다. 일반적으로 기포의 사이즈가 작을수록 입자 제거율이 높은데, 실제 DAF공정에서 사용되는 기포의 사이즈는 80 ${\mu}m$정도 이다. 따라서 개발된 기포 발생장치를 DAF 공정에 응용한다면 높은 효율을 가질 것으로 판단된다.

• Korean Journal of Animal Reproduction
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• v.25 no.2
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• pp.171-180
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• 2001

Compared to other gene transfer system, the advantages of retrovirus-mediated gene transfer are technical ease, efficient expression and genetic stability. Despite the high potency of the retrovirus vector system in gene transfer, one of the drawbacks is a difficulty in concentration of virus stock. To overcome this problem, we tested a new retrovirus vector system producing the progeny retrovirus particles encapsidated with VSV-G (vesicular stomatitis virus G glycoprotein). The infectivity of this virus was not sacrificed by ultracentrifugal concentration and the host cell range extended from all mammalian to fish embryos. Virus titer after 1,000 x concentration was more than 10$^{8}$ CFU/ $m\ell$ on most of the target cell lines. We applied this pantropic viruses in transgenic chicken production by injecting the concentrated (100$\times$) stock into subgerminal cavity of stage X chicken embryos. The survival rate of chicken embryos after injection was about 20% and gene integration rate in surviving embryos was scored almost 100%. Analyses of RT-PCR and fluorescence microscopy, however, showed no evidence of the transgene expression.

• Journal of Elementary Mathematics Education in Korea
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• v.18 no.1
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• pp.37-62
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• 2014

In this thesis, we inquire into teaching method of decimal fraction concept in elementary mathematics education based on measurement activity. For this purpose, our research tasks are as follows: First, we design a experimental learning-teaching plan of 'decimal fraction' unit in 4th grade textbook and verify its effect. Second, after teaching experiment using experimental learning-teaching plan, we analyze the student's status of understanding about decimal fraction concept. As stated above, we have performed teaching experiment which is ruled by new lesson design and analysed the effects of teaching experiment. Through this study, we obtained the following results. First, introduction of decimal fraction based on measurement activity promotes student's understanding of measuring number and decimal notation. Second, operator concept of decimal fraction is widely used in daily life. Its usage is suitable for elementary mathematics education within the decimal notation system. Third, a teaching method of times concepts using place value expansion of decimal fraction is more meaningful and has less possibility of misunderstanding than mechanical shift of decimal point. Fourth, teaching decimal fraction through the decimal expansion helps students with understanding of digit 0 contained in decimal fraction, comparing of size and place value. Fifth, students have difficulties in understanding conversion process of decimal fraction into decimal notation system using measurement activity. It can be done easily when fraction is used. However, that is breach to curriculum. It is necessary to succeed research for this.