• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.45-50
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• 2000

A. pullulan ATCC 42023를 사용하여 고분자량의 pullulan을 대량생산하기 위한 연구로써, 탄소원의 농도, 용존산소량과 pH가 균체 성장 및 pullulan 생산에 미치는 영향에 대하여 연구하였다. Glucose의 당 농도에 따른 실험결과에서 glucose 농도가 0.3M (54g/1)일 때 최대의 pullulan 생산률을 나타내었고, 0.3M (54g/1)이상에서는 productivity가 급격하게 감소하는 기질 저해현상을 나타내었다. 삼각플라스크를 이용한 초기 pH의 영향에 대한 실험결과, 초기 pH 6.5는 $11.98g/{\ell}$의 pullulan을 생산하였고, pH 4.5로 일정하게 조절한 결과, pullulan 생산은 $13.31g/{\ell}$의 최대값을 나타내었다. 그러나 균체성장은 pH 6.5에서 가장 높았다. 그리고 용존산소량의 증가로 pullulan productivity를 증가시킬 수 있었다. 또한 산업적으로 유용한 고분자량의 pullulan을 생산하기 위한 탄소원으로 아미노당인 glucosamine을 사용하여 pullulan의 생성 및 분자구조 변형에 대하여 실험하였다. 탄소원 농도 50g/1 기준에서, glucose와 glucosamine을 40 : 60의 비율로 혼합하여 공급 하였을 때 분자량 20만 이상의 mediun size 및 200만 이상의 high molecular weight의 productivity가 가장 높았으며, A. pullulans의 specific growth rate도 가장 높았다.

• ETRI Journal
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• 제34권4호
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• pp.591-601
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• 2012

Unstructured peer-to-peer (p2p) networks usually employ flooding search algorithms to locate resources. However, these algorithms often require a large storage overhead or generate massive network traffic. To address this issue, previous researchers explored the possibility of building efficient p2p networks by clustering peers into communities based on their social relationships, creating social-like p2p networks. This study proposes a social relationship p2p network that uses a measure based on Hebbian theory to create a social relation weight. The contribution of the study is twofold. First, using the social relation weight, the query peer stores and searches for the appropriate response peers in social-like p2p networks. Second, this study designs a novel knowledge index mechanism that dynamically adapts social relationship p2p networks. The results show that the proposed social relationship p2p network improves search performance significantly, compared with existing approaches.

• 한국가정과교육학회지
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• 제10권1호
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• pp.17-27
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• 1998

The purpose of this study was to investigate the recognition of body shape, the difference between self-evaluated obesity and obesity index of RBW, and attitude toward weight control of middle students. The questionnaires were completed by 195 male and 189 female students of liveing in Yongwol county. The average stature of the boys is 166.97$\pm$6.21cm, the girls is 158.13$\pm$5.83cm, and the average weight of the boys is 57.97$\pm$12.39kg, the girls is 52.88$\pm$8.35kg. 2. In the present body structure of them, the underweight structure is 6.0%, the normal weight structure is 87.2%, and the overweight structure is 6.7%. In the recognition of their own body structures, there are meaningful differences between boys and girls. 3. In the contentment degree of the present body structure of their own, the underweiht structure is much more satisfied with it.(p〈0.001) It shows a meaningful difference between boys and girls. 25.6% boys are satisfied with their own body structures, and 7.4% girls are satisfied with it.(p〈0.001) 4. In the interest degree about the weight's control, 87.1% is interested in it, it is lower in the underweight structure. 88.0% girls and 77.4% boys are interested in the weight's control. There is a meaningful difference between boys and girls, too.(p〈0.001) Each of the weight groups has differences in a experienced or experiencing for the weight's control. 5. The recognition degree of the present body structure showed the meaningful positive relation to the contentment degree of the present body structure and the weight's control.(p〈0.001)

• 한국식품영양과학회지
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• 제42권10호
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• pp.1608-1617
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• 2013

본 연구는 과체중 및 비만인 직장인을 대상으로 체중관리 프로그램을 실시하여 체중감량 및 체지방의 감소, 혈액생화학적 변화, 영양지식 및 운동 능력에 대한 효과를 알아보고자 하였다. 전라북도 내 공공기관의 BMI 23 이상 과체중 및 비만인 직원 39명을 연구대상자로 하여 6개월간 프로그램을 실시하였다. 연구결과 남자그룹에서 삼두근 피부두겹 두께가 유의적으로 감소하였고(P<0.05), 남녀 그룹 모두에서 허리둘레, 엉덩이 둘레가 유의적으로 감소하였다(P<0.05). 혈액 생화학적 검사에서는 남자그룹에서 총콜레스테롤(P<0.05)과 LDL-콜레스테롤(P<0.01)이 유의적으로 감소하였다. 복부 컴퓨터단층촬영 결과에서는 남자그룹에서 복부피하지방조직이 유의적으로 감소하였으며(P<0.01), 영양소 섭취 조사결과 여자 그룹에서 철, 비타민 B2와 나이 아신 섭취량이 유의적으로 증가하였다(P<0.05). 영양지식 점수는 남자 그룹에서 유의적으로 증가하였으며(P<0.05), 운동능력 검사에서는 근지구력이 유의적으로 증가하였다(P<0.01). 직장인들의 건강증진뿐만 아니라 근무 능률과 삶의 질 향상을 위해 사업장에도 건강 및 비만관리가 이루어질 수 있는 체계적인 프로그램이 필요하며, 교육 후에도 비만개선의 긍정적인 변화가 지속될 수 있도록 근로 현장과 국가차원의 프로그램이 개발 지원되어야 할 것이다.

• 한국가금학회지
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• 제33권2호
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• pp.165-169
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• 2006

The objective of this study was to elucidate the basis for the difference in sperm production of broiler breeders. Nine sexually mature Hubbard broiler breeder males, 35 weeks of age, were trained for two weeks for semen collection on alternate days by abdominal massage technique. Following the training, the breeder males were collected daily for five successive days. The males were then classified as low or high sperm producers. The mean body weights of individual males were also recorded on the basis of body weight at the start and end of the experiment. Immediately after last collection the males were slaughtered and testes biometry was determined. Daily sperm output of individual males varied from $0.21{\times}10^9\;to\;2.64{\times}10^9$ sperm. The daily sperm production of low sperm producer males was lower ($0.47{\pm}0.13\;vs.\;2.06{\pm}0.20{\times}10^9$; P<0.05) than high sperm producer males. Testes weight of low sperm producer males was lower ($6.32{\pm}1.6\;vs.\;20.33{\pm}4.76\;gm$; P<0.05) than high sperm producer males. Moreover the testis weight of high sperm producer males was 3.22 times higher than low sperm producer males. The average body weight of high sperm producer males was higher ($4,389{\pm}116.3\;vs.\;3,960{\pm}131.77\;gm$; P>0.05) than low sperm producer males. The correlation coefficients indicate significantly positive correlation of body weight (P<0.05) and testes weight (P<0.01) on semen volume, sperm concentration and daily sperm production.

• 한국축산식품학회지
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• 제24권2호
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• pp.108-114
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• 2004

본 연구는 버크셔종 돼지의 출하체중과 성별에 따른 도체 및 육질 비교를 위해 실시하였다. 첨단양돈연구소에서 사육한 178-183일령 흑돼지(버어크셔) 72두를 공시하여 출하체중과 성별에 따라 95-104kg, 105-110kg 및 111-120kg으로 분리하여 조사하였다. 경남 김해시 어방동 소재 부경양돈 농협 도축장으로 수송하여 관행적인 방법으로 도축 후 도체 특성을 조사하였으며, 육질시험은 도축하여 24시간 냉각한 다음 등심부위(longissimus dorsi)를 공시하여 조사하였다. 출하체중이111-120kg 돼지가 95-104kg과 105-110kg 돼지보다 도체중과 등지방 두께는 증가하였고, 등급은 출하체중이 105-110kg과 111-120kg인 돼지가 A, B등급에 가까운 좋은 등급을 받았지만, 95-104kg인 돼지는 B, C 등급에다(p＜0.05). 돈육 p $H_{u}$, 육즙손실 및 가열감량은 출하체중과 성별에 따라 유사하였으며, 수퇘지가 암퇘지에 비해 전단력이 높았다.(p＜0.05). 돈육의 육색은 출하체중과 성별에 따라 유사한 경향이었다. 총 육색소 함량은 출하체중이 95-104kg인 암퇘지와 111-120kg인 수퇘지가 다른 출하체중과 성별보다 높았다. 조직특성은 출하체중에 따라 유사한 경향이었고, 미경산 암퇘지가 수퇘지에 비해 탄력성과 파쇄성이 높았다. 이상의 연구에서, 도체특성(도체중과 등지방두께)은 출하 무게와 성별에 따라 영향을 받았고, 암퇘지육은 수퇘지에 비해 전단력값과 조직특성이 향상되었다.다.

• Asian-Australasian Journal of Animal Sciences
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• 제16권10호
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• pp.1501-1509
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• 2003

The simultaneous addition of xylanase (5,600 EXU/kg) and phytase (500 FTU/kg) feed enzymes to wheat-based broiler diets was investigated. Starter, grower and finisher diets, with three tiers of nutrient specifications, were fed to 1,440 broiler chicks kept on deep litter from 1-42 days post-hatch, without and with xylanase plus phytase, to determine the effects of diet type and enzyme supplementation on growth performance. The nutrient specifications of type A diets were standard; energy density and protein/amino acid levels were reduced on a least-cost basis to formulate type B diets and further reduced to type C diets. Phosphorus (P) and calcium (Ca) levels were adjusted in supplemented diets. From 1-42 days post-hatch, diet type significantly influenced growth performance. Birds on type C diets had lower growth rates (2,429 vs. 2,631 g/bird; p<0.001), higher feed intakes (4,753 vs. 4,534 g/bird; p<0.005) and less efficient feed conversion (1.96 vs. 1.72; p<0.001) than birds offered type A diets. Enzyme supplementation increased growth rates by 3.2% (2,580 vs. 2,501 g/bird; p<0.005) and improved feed efficiency by 2.7% (1.80 vs. 1.85; p<0.05) over the entire feeding period. There were no interactions between diet type and enzyme supplementation. At 21 days, 5 out of 30 birds per pen were transferred to cages to ascertain treatment effect on apparent metabolisable energy (AME) and nitrogen (N) retention. Xylanase plus phytase enhanced AME (13.48 to 13.91 MJ/kg DM; p<0.001) and N retention (56.3 to 59.7%; p<0.005). Carcass and breast weights of the caged birds were determined following commercial processing. Diet type significantly influenced breast weight, carcass weight and yield. Birds offered Type A diets, in comparison to Type C diets, supported heavier breast (467 vs. 424 g; p<0.001) and carcass weights (1,868 vs. 1,699 g; p<0.001) with superior carcass yields (71.8 vs. 70.6%; p<0.005). Enzyme addition increased carcass weight by 3.9% (1,752 vs. 1,821 g; p<0.005) and breast weight by 5.8% (431 vs. 456 g; p<0.01) without influencing yields. Feed ingredient costs per kg live weight gain and per kg carcass weight indicated that enzyme addition was economically feasible, where supplementation of Type A diets generated the most effective results. Importantly, soluble and total non-starch polysaccharide and phytate contents of the wheat used were typical by local standards. This study confirms the potential of supplementing wheat-based broiler diets with xylanase plus phytase but further investigations are required to define the most appropriate inclusion rates and dietary nutrient specifications in this context.

• Journal of Korean Biological Nursing Science
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• 제20권3호
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• pp.169-176
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• 2018

Purpose: This study was performed to elucidate whether the obesity or body image is a barrier to breast screening compliance in Korean women. Methods: We included 54,017 women aged between 35 to 70 years from the Korea Community Health Survey (KCHS) 2014 dataset. To identify whether a mutual relationship exists between weight perceptions and breast cancer screening rates, the participants were divided into three groups according to the level of concordance between Body Mass Index (BMI) and a subjective body image. Descriptive analyses, a chi-square test, and multivariate logistic regression analyses were performed. Results: After covariate adjustment, the screening rate of the overweight group was 1.09 times higher than the normal weight group (odds ratio [OR], 1.09; confidence interval [CI], 0.00-0.16; p= .038) and the severe obesity group was 1.20 times lower (OR, 0.83; CI, -0.36-0.00; p= .047). Weight misperception also had a significant influence on breast cancer screening. Especially, The overweight distortion group was less likely to undergo breast cancer screening (OR, 0.93; CI, -0.15-0.00; p= .037). Conclusion: Obesity and weight misperceptions are associated with lower compliance with breast cancer screening guidelines.

• 대한수학회보
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• 제58권2호
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• pp.507-514
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• 2021

Vector-valued Eisenstein series of weight 3/2 are often not holomorphic. In this paper we prove that, for an even lattice Ḻ, if there exists an odd prime p such that Ḻ is local p-maximal and the determinant of Ḻ is divisible by p2, then the Eisenstein series of weight 3/2 attached to the discriminant form of Ḻ is holomorphic.

• 대한영양사협회학술지
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• 제9권1호
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• pp.81-93
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• 2003

This study was performed to compare nutrient intake, bone density, total cholesterol and blood glucose in women who lived in Taegu city. The number of subjects participated in the study was 89 and they were classified into 3 groups by age. 30.3% of the subject were in their 20-34 years of age, 37.1% were in their 35～49 years of age and 32.6% were above fifty. A dietary record method was used to assess the nutritional intake of subjects. Anthropometric measurement such as body weight, height and WHR, and blood pressure, blood glucose, cholesterol and BMD were measured. The results were as follows, mean weight, WHR, SBP, and blood glucose and total cholesterol of the subjects above 50 years old were significantly higher than those of 20-49 years of age(p<0.05). Mean bone density in calcaneus of subjects aged above fifty was lower than those of under 49 years of age(p<0.05). Weight, BMI, waist circumference, WHR and SBP were positively correlated with age(p<0.01). WHR and body fat were positively correlated with BMI(p<0.01). Waist circumference was positively correlated with SBP(p<0.01). Bone mineral density was negatively correlated with age and SBP(p<0.01). Also BMD was positively correlated with weight(p<0.05). Energy intakes was positively correlated with bone mineral density(p<0.05). Fat intakes was negatively correlated with SBP and blood glucose(p<0.05). Calcium intakes was negatively correlated with SBP(p<0.05). Ca/P ratio was negatively correlated with age(p<0.05) and WHR(p<0.01). Zinc intakes was negatively correlated with SBP and blood glucose(p<0.05). From the findings, it is suggested that the women after menopause keep the optimum body weight and good eating habits. Especially intake of good quality protein, calcium and carbohydrate seemed to be important.