• 한국유기농업학회지
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• 제6권1호
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• pp.99-108
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• 1997

The aim of this experiment was to investigate the effect of applying times of cattle slurry on dry matter yield of Orchardgrass, when cattle slurry applied at rates of 30m3(average mineral nitrogen fertilizer equivalent to 120kg) per ㏊ in different dressing times, such as S1(1st and 2nd growth), S2(1st and 3rd growth), S3(1st and 4th growth), S4(2nd and 3rd growth), S5(2nd and 4th growth) and S6(application for 3rd and 4th growth). The results were as follows. 1. The average annual yields of dry matter were produced 6.36~7.42 ton per ㏊ in 1995~1997 when cattle slurry applied at rates of 30m3(average mineral nitrogen fertilizer equivalent to 120kg) per ㏊ in different dressing times, especially these tendency were shown higher annual dry matter in S4 plot9application for 2nd and 3rd growth). Those were higher 2.48~3.54 tons or 1.22~2.28 tons per ㏊ than the yields from non-fertilizing or phosphrous and potassium fertilizing. 2. Relative yields of annual dry matter in cattle slurry application plots were 164(S2 plot)~191(S4 plot)% in comparing with non-fertilizing plot. 3. Dry matter yields according to cutting frequency were highest at the 2nd cut(1.50 ton) and were in the order 3rd cut(0.95 ton)>4th cut(0.75 ton)>1st cut(0.69 ton/㏊). Also, those of cattle slurry application plot per ㏊ were in the order 2nd cut(2.02~2.73 tons)>3rd cut(1.56~2.08 tons)>4th cut(1.07~1.68 tons)>1st cut(1.11~1.45 tons/㏊). 4. Relative yields of annual dry matter in cattle slurry application plots were 164~219, 161~210, 143~212 and 135~182% at the 3rd, 1st, 4th and 2nd cut, respectively in comparing with non-fertilizing plot. 5. The efficiencies of nitrogen on dry matter yield(kg DM/kg N) were 18.1, 21.3 and 34.5kg DM/kg N when cattle slurry applied to Orchardgrass at rates of 30m3 (average mineral fertilizer equivalent to 120 kg) per ㏊ in 1993, 1994 and 1995, respectively, especially these tendency were shown higher efficiencies in S4 plot(application for 2nd 3rd growth). On the other hand, those of the same level fertilization of mineral nitrogen were 43.8, 19.2 and 13.4 kg DM/kg N in 1993, 1994 and 1995, respectively.

• 한국임상수의학회지
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• 제18권1호
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• pp.67-69
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• 2001

A 3 years-old male Tosa dog was referred to Seoul National University Veterinary Medical Teaching Hospital with a history of difficulty in mastication. Clinical signs of dropped jaw, drooling, mild depression and dehydration were observed. According to history taking, physical examination, neurologic examination, complete blood count (CBC), serum chemical profile and radiography, the dog was diagnosed as idiopathic trigeminal nerve paralysis. Electroacupuncture treatment was applied to the dog on local and distal point at an interval of 7 days. Local points were GB-1 (Tong Zi Liao) of gall bladder meridian and ST-7 (Xia Guan) of stomach meridian. Distal points were PC-4 (Xi Men), PC-6 (Nei Guan) of pericardium meridian. Electrical stimulus was performed for 20 minutes at the frequency of 3 Hz, 3 Volts on ST-7. Ten days after the initial electroacupuncture treatment, clinical signs related to trigeminal nerve paralysis were almost disappeared.

• 여성건강간호학회지
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• 제11권1호
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• pp.12-19
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• 2005

Purpose: This study was to identify the correlations between management of menopause, urinary incontinence and sexual satisfaction in climacteric women. Method: This study was conducted using a convenient sampling method in and around Jinju city, and each participant gave consent for the research. A total sample of 250 middle-aged women aged 40 to 60 years were chosen for the study, of which 157 women completed the questionnaires used for the analysis. Data was collected from Jan 1st to Mar 31st, 2004 by structured questionnaires (questionnaires for management of menopause, urinary incontinence and sexual satisfaction). Result: The characteristic variables significantly related to management of menopause were occupation and religion. The characteristic variable significantly related to urinary incontinence was age. The characteristic variables significantly related to sexual satisfaction were religion, economic status, and frequency of delivery. The relationship between management of menopause and sexual satisfaction was statistically significant with a positive correlation. Conclusion: It is hoped that the above findings will stimulate health promoting programs for climacteric women.

• 한국군사과학기술학회지
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• 제24권1호
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• pp.41-49
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• 2021

In electronic warfare, beamforming using multiple antennas is applied for effective transmission of electronic attack signals. In order to perform an electronic attack against multiple threats using the same frequency resource, it is necessary to apply a multi-beam transmission algorithm that has been studied in wireless communication systems. For electronic attacks against multiple threats, this paper presents an MMSE(Minimum Mean-Squared Error) beam-forming technique based on the prior location information of threats and an optimization method for power allocation. In addition, the performance of the proposed method is evaluated and received signals of multiple threats are compared and analyzed.

• 대한영양사협회학술지
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• 제18권1호
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• pp.72-80
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• 2012

This study examined the effects of custom nutrition education on dietary intakes and clinical parameters in patients diagnosed with iron deficiency anemia. A total of 34 patients visited the anemia clinic of Yeouido St. Mary's Hospital. Among these, only 16 patients were available for follow-ups. A follow-up was conducted by a clinical dietitian 2 months from the first nutrition education session. Patients were all women. For custom nutrition education, we investigated anthropometric data, dietary assessment (24 hr-recall, FFQ), and self-recognized anemic symptoms. Weight did not show a significant difference but hemoglobin, hematocrit (P<0.01), serum iron, and serum ferritin (P<0.05) were significantly increased after the nutrition education. Serum total iron binding capacity was significantly decreased (P<0.01). Self-recognized symptoms such as dizziness, fatigue (P<0.001), shortness of breath, headache (P<0.01), brittle nails, and sore tongue (P<0.05) were significantly improved. Daily intakes of protein (P<0.05), total iron (P<0.01), and animal iron (P<0.001) were significantly increased. A significantly negative correlation was observed between current serum iron and the intake of carbohydrates, fat, or phosphorus (P<0.05). But current serum ferritin showed a significantly positive correlation with the frequency of intake of meat, poultry, and fish. It could be concluded that the custom nutrition education might be effective on quality of diet as well as iron status and it might also improve the clinical parameters in patients diagnosed with the iron deficiency anemia.

• 한국환경보건학회지
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• 제45권6호
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• pp.583-593
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• 2019

Objectives: The purpose of this study was to evaluate the relationship between the frequency score of wearing personal protective equipment (PPE) and concentration of urinary organophosphorus pesticide metabolites in farmers. Methods: The study was conducted in Chungcheongnam-do Province of South Korea. We collected urine samples from 308 farmers from September to December 2017 and May to July 2018. Among them, 17 farmers with urinary creatinine levels outside the normal range were excluded. Information on the frequency of wearing PPE was obtained from the farmers through face-to-face survey. Each frequency of wearing for seven types of PPE was converted into a score and expressed as a total score, which was divided into quartiles. Four types of urinary organophosphorus pesticide metabolites were analyzed using a gas chromatography mass selective detector. Multiple linear regression analysis was used to identify concentrations of urinary organophosphorus pesticide metabolites affected by the frequency of wearing PPE. Results: The average frequency score of wearing PPE was 8.0. The quartiles of frequency score of wearing PPE were divided as follows: 1st quartile (≤1), 2nd quartile (1-6), 3rd quartile (6-12), and 4th quartile (>12). Compared with subjects with a low frequency score of wearing PPE (reference), subjects with a high frequency score of wearing PPE (4th quartile) had lower concentrations of urinary diethyl phosphate (DEP) (p<0.01) and dialkyl phosphate (ΣDAP) (p<0.05), which is the sum of dimethyl phosphate (DMP), DEP, dimethyl thiophosphate (DMTP), and diethyl thiophosphate (DETP). Conclusion: Concentrations of urinary organophosphorus pesticide metabolites were associated with frequency score of wearing PPE. Particularly as the frequency score of wearing PPE increased, concentrations of urinary DMP, DEP, DETP, and ΣDAP significantly decreased. The findings of this study can contribute to the management of health effects among farmers working with pesticides.

• 한국초전도저온공학회:학술대회논문집
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• 한국초전도저온공학회 2002년도 학술대회 논문집
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• pp.189-192
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• 2002

In this study, The experimental open-tube-type and close-tube-type thermoacoustic refrigerator were constructed. The resonant characteristics of a thermoacoustic refrigerator were investigated. In order to determine the optimum resonant tube length and frequency, We changed the length of resonant tube from 400mm to 850mm and the frequency from 100Hz to 1000Hz. In case of first harmonic, the temperature difference of open-tube-type (1/4 wave) refrigerator was $41^{\circ}C$(resonator length :500mm). The temperature difference of close-tube-type (1/2 wave) refrigerator was $43^{\circ}C$(resonator length :850mm). In this experiments, the experimental 1/2 wave refrigerator is slightly cooler than the experimental l/4 wave refrigerator.

• 전기학회논문지
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• 제66권4호
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• pp.715-720
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• 2017

This study tries to analyze morphology and formant frequencies of linear prediction spectra of stethoscope sounds for heart diseased children. For this object, heart diseased stethoscope sounds were collected in the pediatrics of an university hospital. The collected signals were preprocessed and analyzed by the Burg algorithm, a kind of linear prediction analysis. The linear prediction spectra and the formant frequencies of the spectra for the stethoscope sounds for the normal and the diseased children are estimated and compared. The spectra showed outstanding differences in morphology and formant frequencies between the normal and the diseased children. Normal children showed relatively low frequency of F1(the first formant) and small negative slope from F1. VSD children revealed stiff slope change around F1 to F3. Spectra of ASD children is similar with the normal case, but have negative values of F3. F1-F2 difference of the functional murmur children were relatively large.

• 한국가정과교육학회지
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• 제19권4호
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• pp.1-15
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• 2007

본 연구는 경기지역에 위치한 남녀중학생 1학년 270명과 3학년 252명, 총 522을 대상으로 학년별 성별에 따라 기술 가정교과 내의 식생활단원에 대한 인식, 활용도, 수업만족도, 요구도 및 학습 후 학생들의 식생활태도에 차이가 있는지를 비교하였다. 본 연구에서 얻어진 결과를 요약하면 다음과 같다. 기술 가정 교과에 대하여 1학년과 3학년 모두 선호도가 낮았으며, 좋아하는 이유로는 1학년, 3학년 모두 '실생활에 도움이 되기 때문에'이며, 싫어하는 이유로는 '내용이 흥미 없기 때문에'가 가장 높게 나타났다. 기술 가정교과에 대하여 1학년이 3학년보다 높은 흥미도를 보였으며, 실생활 도움 정도는 3학년이 1학년보다 높게 나타났다. 기술 가정교과 내의 식생활단원에 대하여 1학년의 선호도가 3학년에 비해 더 높게 나타났으며, 좋아하는 이유는 1학년, 3학년 모두 '조리실습을 좋아하기 때문에'가, 싫어하는 이유로는 1학년, 3학년 모두 '영양과 건강에 대한 관심이 없어서'가 가장 높게 나타났다. 식생활 단원의 필요도는 1학년이 3학년보다 더 필요하다고 응답했으며, 식생활 단원이 실생활에 도움을 주는 정도도 1학년이 3학년보다 더 도움이 된다고 응답하였다. 실생활에 도움이 안되는 이유는 1학년, 3학년 모두 '실생활에 적용할 시간이 없어서'가 가장 많았다. 식생활단원에 대한 실생활에서의 활용도는 전반적으로 높은 것으로 나타났고, 1학년이 3학년보다 높은 활용도를 보였다(P<0.001). 식생활단원에 대한 수업만족도가 낮은 편이었다. 식생활 단원에 대한 요구도는 1학년이 3학년보다 높게 나타났으며, 가장 높은 필요도를 보인 것은 1학년과 3학년 모두 '조리의 기초와 실제'였다. 식생활 단원에 대한 선호도가 높을수록 요구도, 만족도, 활용도가 높은 것으로 나타났다. 요구도와 만족도, 만족도와 활용도, 요구도와 활용도간에 모두 유의적 수준의 양의 상관관계를 나타내었다. 이상의 결과를 종합하여 볼 때 가정 교과의 식생활 단원에 대한 인식, 선호도 및 활용도, 요구도 등은 대체로 긍정적으로 나타났으며, 특히 1학년의 선호도, 요구도, 활용도 등이 3학년에 비해 더 높게 나타났다. 식생활영역을 선호할수록 식생활 수업을 매우 긍정적으로 받아들이며, 식생활영역 요구도와 만족도, 활용도 등이 높았다. 따라서 식생활영역에 대한 학생들의 선호도를 높일 수 있는 식생활 교육내용과 교수-학습방법을 개발하고 학생들의 요구에 부응하는 교육환경의 개선이 이루어진다면 학생들이 식생활 수업에 적극적으로 참여하여 높은 학업성취도를 얻을 수 있을 것으로 생각된다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 하계학술대회 논문집 Vol.6
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• pp.160-161
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• 2005

The $(Sr_{1-x}Ca_x)TiO_3$(SCT) thin films are deposited on Pt-coated electrode (Pt/TiN/$SiO_2$/Si) using RF sputtering method with substitutional contents of Ca. The optimum conditions of RF power and $Ar/O_2$ ratio were 140[W] and 80/20, respectively. Deposition rate of SCT thin film was about 18.75$[{\AA}/min]$. The dielectric constant was increased with increasing the substitutional contents of Ca, while it was decreased if the substitutional contents of Ca exceeded over 15[mol%]. All SCT thin films used in this study show the phenomena of dielectric relaxation with the increase of frequency, and the relaxation frequency is observed above 200[kHz].