• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2011.03a
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• pp.55-55
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• 2011

실리카 지지체 위에 은 (silver) 나노 입자를 부착시키는 방법으로는 지지체 표면을 먼저 은입자와 친화성이 큰 amino(-NH2), mercapto(-SH), cyan(-CN) 등의 관능기로 표면처리 하는 방법이 일반적으로 사용된다. 구체적으로 설명하면 첫 단계로 지지체인 실리카입자의 표면을 아민으로 표면 처리 한다. 실리카 입자위에 부착된 아민관능기는 입자 생성의 단계에서 은 (silver) 나노 입자가 붙는 접촉점의 역할과 핵 생성 장소로서의 역할을 하게되고, 아민 관능기의 이런 역할로 실리카 입자 표면에 부착된 핵이 생장하여 입자가 됨으로써 최종적으로 은(silver) 나노 입자가 실리카 지지체위에 부착된 형태의 나노복합체가 형성된다. 분자량이 다른 PVP를 사용하여 제조한, NH2와 SH로 계면처리 된 은-실리카 나노복합체제조를 시도하였다. 사용되는 PVP의 분자량이 증가함에 따라 긴 고분자 사슬에 의하여 생성된 입체장애가 증가하게 되어, 은 핵의 성장에 대한 물리적 장벽이 증가하게 된다. 그러므로 고정화된 은 입자의 크기가 감소하게 된다. 이러한 형상은 NH2기 또는 SH기로 계면 처리된 실리카를 이용하여 제조된 은-실리카 나노복합체 입자들에서 모두 관찰되지만, SH기로 계면처리된 실리카를 사용할 경우 고정화된 은 입자의 수가 더욱 많고, 크기 역시 더욱 균일함을 알 수 있다.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.30 no.4
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• pp.634-639
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• 1997

In order to obtain the basic knowledges for the effective seed production of Perinereis aibuhitensis, sediment preference, burrow shape and behavior with in burrow were investigated in the laboratory. The highest value in both sediment preference and survival rate of P. aibuhitensis were shown at fine sand below 0.10 mm in the mean diameter. The worm made various types of burrows, such as J, L, O, Y and I shapes. Generally, only one individual inhabits in a burrow with head-up, but when excreting, it positions up-side down.

• The Journal of the Korea institute of electronic communication sciences
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• v.9 no.4
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• pp.409-416
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• 2014

In H/W implementation for the finite field, the use of normal basis has several advantages, especially the optimal normal basis is the most efficient to H/W implementation in $GF(2^m)$. The finite field $GF(2^m)$ with type I optimal normal basis(ONB) has the disadvantage not applicable to some cryptography since m is even. The finite field $GF(2^m)$ with type II ONB, however, such as $GF(2^{233})$ are applicable to ECDSA recommended by NIST. In this paper, we propose a bit-parallel multiplier over $GF(2^m)$ having a type II ONB, which performs multiplication over $GF(2^m)$ in the extension field $GF(2^{2m})$. The time and area complexity of the proposed multiplier is the same as or partially better than the best known type II ONB bit-parallel multiplier.

• Journal of Nutrition and Health
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• v.19 no.6
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• pp.382-391
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• 1986

This survey was carried out to study the relationship between observable factor such as anthropometry, blood pressure, food habit, the score of THI and diseases of 459 persons (male: 188, female: 271) aged 60 and over in the rural area of Kurye - Gun Chonnam from April 28 to May 1, 1986. The results obtained were as follo\ulcornerws 1) Body weight and height was below Korean average. The mean obesity rate in male and female showed -2.3% and 3.4%, respectively, and BMI showed 25.8 and 26.0 respectively. 2) The systolic and diastolic blood pressure was normal in both sexes. The pro opotion of hypertension by WHO level showed 19.6% and 20.3% in male and fem\ulcornerale, respectively_ The proportion of anemia showed 57.9% and 41.7% in male and female, respectively. The concentration of total protein, albumin, cholesterol and gl\ulcornerucose and white blood cell number showed normal range in both sexes. 3) The proportion of the disease showed 68% of male and 83% of female and among them 50% of male and 43% of female suffered from one kind of disease and there are more female who suffered from many kinds of diseases than male. The most common disease is neuralgia and nexts are digestive diseases, diabetes melli\ulcornertus, urinary disturbance, motion disturbance, arthritis, respiratory diseases, tubecu\ulcornerlosis and hepatitis. 4) There was a significant correlation between body height and weight and the score of food habit. 5) There was a considerable relation between the score of each item of TIll and the status of diseases. 6) There appeared profound relation between obesity rate and the data of anth\ulcornerropometry, but weak relation between that and blood constituents, and no relation between that and the score of food habit.

• Fashion & Textile Research Journal
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• v.15 no.4
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• pp.583-595
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• 2013

In the women's clothing industry that targets middle aged-women, there is increased interest on middle-aged women and their appearance management and diet. It is believed that the body type of middle-aged women is becoming thinner. This study examines if middle-aged women body types have changed based on data from the $5^{th}$ and $6^{th}$ Size Korea that objectively analyzed the aspects of middle-aged women's body size change and the related fashion industry that recognize changes in middle-aged women body types by suggesting foundational data for clothing designs. According to research results, middle-aged women's body type shows an increase in items related to height and that measurement values related to obesity (such as weight and BMI index) tend to decrease. Height has increased and weight has decreased compared to the past. Most items related to width or depth tend to show decreased values and we can assume that the present middle-aged women's body type is changing more dynamically than before. It will be possible to design proper clothes for consumer body type and trends if we design clothes that afford multilateral attention to the patterns, design, or material in clothing design by applying the aspects of middle-aged women's body size and body type change.

• Proceedings of the Korean Vacuum Society Conference
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• 2013.02a
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• pp.677-677
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• 2013

최근 석유에너지의 고갈과 휴대용 전자기기의 사용의 증가로 고효율의 배터리의 개발이 요구되고 있다. 생체칩에서 부터 전기자동차, 에너지 저장체까지 광범위한 산업군에 걸처 배터리의 개발이 되고 있어 시장규모의 계속적인 성장이 있을 것으로 전망하고 있다. 현재 상용되고 있는 음극 재료는 카본재료(이론 용량 372 mAh/g)이다. 이 카본재료의 특징은 값이 싸고, 표준 환원전위가 낮아 비교적 높은 전압을 낼 수 있다. 그러나 낮은 에너지밀도를 갖으므로 높은 에너지를 필요로 하는 차세대 산업군인 전기자동차 등에는 적합하지 않은 것으로 평가되고 있다. 그래서 더 높은 에너지 밀도를 갖는 다른 재료들에 대한 연구들이 활발히 이루어지고 있다. 본 연구에서는 음극 재료로서 주석을 선택해서 연구를 하였다. 카본계열의 음극재료의 질량당 이론 에너지 밀도는 372 mAh/g임에 반해 주석같은 경우는 약 991 mAh/g 정도의 비교적 큰 이론용량을 갖고 있다. 하지만, 주석 등 금속, 혹은 금속 합금을 음극재료로 사용할 경우 많은 양의 리튬이 삽입/탈착되면서 약 300% 이상의 부피변화가 있게 된다. 그러한 과정에서 주석이 분쇄되어 떨어지거나 전자를 제공받는 집전체로부터 떨어지게 되고, 이 과정에서 심각한 에너지 밀도의 손실이 일어나게 된다. 이러한 문제점들을 극복하기 위해 다음과 같은 구조들을 고안하여 도금 공정을 사용하여 음극재료를 제작하여 실험을 진행하게 되었다. 도금법은 대면적을 싼 가격으로 할 수 있으며 원하는 두께 및 모폴로지까지 쉽게 조절할 수 있다. 부피팽창에 의한 스트레스를 최소화하기 위해 도금법을 사용하여 나노구조를 만들어 그에 따른 전기화학적 특성 변화를 측정하였다. 다공성 필름인 AAO 디스크의 한 면에 구리를 sputtering 공정을 사용하여 0.5 um 두께의 seed layer 구리 박막을 형성하고 형성된 구리 박막 위에 도금공정을 이용하여 두껍게 구리를 증착함으로 구리 음극 집전체를 형성한다. 그 후 AAO 구조 안에 주석을 도금하면 AAO의 구조를 따라 주석 나노와이어가 형성이 된다. 마지막으로 NaOH로 AAO를 제거해주면 직경 200 nm, 길이 2 um 정도의 주석 나노와이어를 구리 집전체위에 만들 수 있었다. 배터리의 용량을 측정한 결과 안정한 싸이클 특성과 약 400 mAh/g의 에너지 밀도를 갖는 것으로 나타났다.

• Korean Journal of Community Nutrition
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• v.3 no.2
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• pp.190-201
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• 1998

This study was carried out with 505(243 boys and 262 girls in the Sungnam area) high school students to investigate the effects of eating behavior and anthropometric variables of weight and height on excercise performance. General characteristics about subjects and eating behavior were surveyed by questionnaire, anthropometric data were collected using two methods. The weight and height of subjects in 1996 were measured, but the same data in 1995 were collected from health records of each student. Body fat content of subjects was measured by BIA(Body Impedance Analysis). The grades of exercise performance, which were evaluated by physical education teachers were collected from records of a physical strength test score of each subject. From these, the following result were found. Groups with different eating behaviors such as skipping meals, overeating, food preference for a specific food(milk, carbonated drink etc.) were significantly different in their weight and height and body fat contents. The growth rate of height in first and second grade boys was significantly higher than that for grade boys. The amount of weight gain from second grade to third grade was significantly more than that of other grades both for boys and girls. The mean of BMI was $21.66\pm{2.95}$ in boy, $21.50\pm{2.62}$ in girls. The percentage of body fat was $24.91\pm{6.55%}$ in boy $34.73\pm{4.88%}$ in girls. Amounts of body fat were significantly increased in third grade. The group with higher fat content and the higher BMI group had lower values of physical strength. And the ability to exercises perform decreased significantly by promotion of grade. The other variables such as degree of concern about weight control and preference of exercise, and frequencies of exercise per week were significant factors in body fat content and physical strength. As a countermeasure for these problems, nutrition and health education must be developed for adolescents and a practical, proper physical activity guidance campaign for them is necessary.

• The Korean Journal of Physiology
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• v.5 no.2
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• pp.71-78
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• 1971

Anesthetized dogs were tilted from horizontal to the upright and head down position. Tilting to the upright position was followed by an increase in heart rate. In the head down position a decreased heart rate was obtained. The arterial blood pressure was decreased in the upright position and was decreased markedly in the head down position. The central venous pressure was decreased in the upright position and was markedly decreased down to the negative pressure in the head down position. The respiratory rate was slightly increased in the upright position comparing to that in the horizontal position. No remarkable changes were noted in the head down position. From the above results the following factors were discussed The decreased arterial blood pressure during the upright position was supposed to be the secondary effect from the diminished venous return that was suggested by the decreased central venous pressure. The decreased arterial blood pressure in the head down position was also supposed as the above reason as the diminished central venous pressure during the tilt. In addition the cardioinhibitory effects originated from the baroreceptors might have been operated during head down tilting. In the heart rate there was slight tachycardia in the upright position this was assumed as the abolished cardioinhibitory impulses from the baroreceptor in the upright position. On the contrary, despite of the decrease of arterial blood pressure in the head down position as well as in the upright, the bradycardia have been appeared. This was suggestive of cardioinhibitory impulses from the baroreceptors which was stretched during head down tilting. From the above findings there is a possibility of continous cardioinhibitory responses during head down tilting for this kind of the short period of 10 minutes which was chosed in this study.

• Journal of Nutrition and Health
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• v.33 no.3
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• pp.324-331
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• 2000

A deteriorating North Korean economy, coupled with a devastating natural disaster such as flooding and drought in recent years, brought about a severe food shortage and malnutrition problem which caused a migration of its population including young children to neighboring countries. We conducted a nutritional survey on a total of 436 children, aged 4-19 years old, who migrated to the China side of the border from July to September, 1999. The study subjects were interviewed by Korean-Chinese interviewers who were trained for anthropometric measurements and dietary surveys. Heights, weights, and chest circumference of the subjects were 70-90% of the South Korean reference values for the corresponding age and sex. Dietary intakes of the subjects were found to be extremely poor-the average number of food, mostly of plant origin, consumed in a day was 2.8, and the proportion of the subject who reported to take all three meals in a day while residing in North Korea was as low as 36.2%. Ninety five percent of the subjects had at least one clinical symptom related to malnutrition, 68.6% had 2-4 symptoms, and 15.1% had 5 or more symptoms. The results of this study provided an objective data for the first time on the severity of the food crisis and malnutrition problem that afflicted North Korean older children and adolescents as well as children aged 7 or under as previously reported elsewhere. the wasted and stunted children and youths prevailing in North Korea could exert a negative influence on the country's health and economy. More researches are needed in the future to investigate on the impact of malnutrition in North Korean children on the country's social, economic, and cultural state as well as on the health and nutrition situation.

• Journal of Nutrition and Health
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• v.10 no.4
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• pp.33-42
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• 1977

강원도(江原道) 원성군(原城郡) 종합영양(綜合營養) 시범사업(示範事業)의 영양평가(營養評價)의 일익(一翼)으로 해당 영양시범사업시행전(營養示範事業施行前)의 기초자료(基礎資料) 수집을 위(爲)한 예비조사(豫備調査)로서 시행(施行)한 것이다. 조사시행기간(調査施行期間)은 1976년(年) 7월(月) 중순(中旬)에 8일간(日間)에 걸쳐 2명(名)의 의사(醫師)를 포함(包含)한 16명(名)으로 구성(構成)된 조사진(調査陣)으로서 4개리(個里)에서 40개(個) 세대(世帶)(각리(各里)에서 10개(個) 세대(世帶))를 무작위임의선정(無作爲任意選定)하며 한 세대(世帶)에 대(對)하여 연(漣) 3일간(日間) 조사(調査)하고 조사기간중(調査期間中) 식품섭취상태조사(食品攝取狀態調査)와 아울러 신체계측(身體計測) 임상조사(臨床調査) 및 혈액채취(血液採取)를 하여 영양섭취상태(營養攝取狀態), 신체발육상태(身體發育狀態), 임상증상(臨床症狀) 및 혈색소양(血色素量)을 측정(測定)하여 평가(評價)하였다. 특(特)히 학령전기아동(學齡前期兒童)의 영양상태(營養狀態)에 중점(重點)을 두었다. 조사결과(調査結果)를 요약(要約)하면 다음과 같다. 1. 일반적(一般的)으로 열양섭취양(熱量攝取量)이 부족(不足)하다. 2. 섭취식품(攝取食品)의 대부분(大部分)이 식물성식품(植物性食品)이고 양질(良質)의 단백질(蛋白質)이 부족(不足)되어 있다. 3. 비타민 A와 $B_2$ 그리고 칼슘 섭취양(攝取量)도 부족(不足)하다. 4. 대상주민(對象住民)의 전체적(全體的)인 임상검사(臨床檢査)로 뚜렷한 영양실조(營養失調)나 결핍증상(缺乏症狀)은 희유(稀有)하나 아동(兒童)에서는 비타민 $B_2$ 부족성(不足性) 증상(症狀)이 많다. 5. 아동(兒童)의 체위(體位)는 대체(大體)로 전국(全國) 평균치(平均値)에 미급(未及)하다. 6. 가임부(可妊婦)의 75%와 아동(兒童)의 23.7%에서 혈색소치(血色素値)가 빈혈(貧血)에 속(屬)하고 있다. 7. 특별(特別)한 이유식(離乳食)이 전무(全無)한 실정(實情)이고 임신부(妊娠婦)나 수유부(授乳婦)를 위(爲)한 보충식(補充食)도 따로 없다.