도시 보행환경 분석을 통한 연령 계층별 공원 접근성 분석

유제현,양병선 전북대학교 부설 휴양및경관계획연구소 2023 휴양및경관연구 (J East Asian Landscape Studies) Vol.17 No.4

This study aims to conduct an accessibility analysis of parks based on the disposition distance, utilizing derived service area values. To obtain the service area values for individual parks, First, Classified age groups and caculated a average walking speed. Secondly, Established a pedestrian network of Jeonju City. Thirdly, Integrated slope and walking resistance as pedestrian resistance factors into the constructed pedestrian network. Employing these datasets, network analysis was performed to derive service areas considering age-specific speeds and those incorporating walking resistance factors. To illustrate significant differences between the formed service areas and quantified them as ratios based on the legal disposition distance area. The analysis results show that in networks where walking resistance factors are not considered, there is a minimum decrease of –4.1% and a maximum decrease of –53.4% in service area for the young aged compared to the service area determined by the disposition distance area. A more pronounced decrease in the service area ratio is observed among the elderly, ranging from a minimum of –23.9% to a maximum of –69.4%. Furthermore, in networks where resistance factors are considered, both the young aged and the elderly experience a decrease in service area by approximately 2-3% compared to scenarios where resistance factors are not taken into account. Based on the outcomes of this study, it is evident that the existing legally disposition distance area represents merely the average value of straight-line distance, devoid of considerations for diverse factors such as age groups and walking resistance. If current institutional practices persist, the reduction in service area will escalate relative to age groups and over time. This study serves to visually and numerically underscore the necessity for a paradigm shift in institutional measures, advocating for the consideration of age groups and walking resistance factors in catchment area determination within the realm of urban planning.

발효유와 식문화 (하)

유제현,Yu, Je-Hyeon 한국유가공협회 1988 牛乳 Vol.35 No.-

식생활의 변화와 유제품의 소비동향

유제현,Yu, Je-Hyeon 한국유가공협회 1989 牛乳 Vol.39 No.-

가공 Cheese와 그전망

유제현 한국식품산업협회 1980 좋은식품 Vol.53 No.-

성공적인 낙농인의 자질

유제현 한국낙농육우협회 1984 낙농·육우 Vol.36 No.-

우유로 뇌세포의 영향을 공급하자

유제현,Yu, Je-Hyeon 한국유가공협회 1982 牛乳 Vol.3 No.4

국산 가공치이즈와 외국산 가공치이즈의 지질에 관한 연구

유제현,노상호,이강익 한국낙농학회 1987 韓國酪農學會誌 Vol.9 No.4

1. 總脂質은 國産 S₁ 加工치이즈 27.76%, 國産 S₂加工치이즈 32.90%, KRAFT 加工치이즈 26.11%가 抽出되었으며, 그중 中性脂質, 糖脂質 및 燐脂質의 比率은 各各 99.09%:0.43%:0.48%, 99.32%:0.30%:0.38%, 98.92%:0.44%:0.64%였다. 2. 中性脂質 構成은 triglyceride가 國産 S₁加工치이즈 91.49%, 國産 S₂加工치이즈 87.83%, KRAFT 加工치이즈 82.95%로 가장 많았으며, 1,3-diglyceride, free fatty acid, 1,2-diglyceride, monoglyceride 等이 共通的으로 檢出되었으며, 특히 國産 S₁加工치이즈는 他種에 비해 遊離脂肪酸의 含量이 많았다. 3. 糖脂質 構成은 3種의 加工치이즈 모두 ceramide monohexoside, ceramide dihexoside, ceramide trihexoside가 主成分이었다. 3種의 加工치이즈가 ceramide dihexoside와 ceramide trihexoside 組成比에 있어서 그 pattern이 相異했고, 특히 國産 S₂加工치이즈에 있어서 ceramide trihexoside 含有量이 ceramide dihexoside 含有量에 비해 월등히 높았다. 4. 燐脂質 構成은 주로 phosphatidyl ethanolamine, phosphatidyl choline, sphingomyelin으로 構成되었고 이외에도 lysophosphatidyl choline이 微量 檢出되었다. 5. 中性脂質의 脂肪酸組成은 3種의 加工치이즈 모두 palmitic acid 가 가장 많았고, 다음으로 oleic acid, myristic acid, stearic acid 順으로 含有되어 있었다. 6. 糖脂質의 脂肪酸組成은 國産 S₁加工치이즈와 KRAFT 加工치이즈는 palmitic acid가 各各 31.75%, 30.64%로 가장 많았고, 國産 S₂加工치이즈에서는 oleic acid가 33.76%로 가장 많았으며, 共通的으로 炭素數 10 以下의 揮發性 低級脂肪酸은 徵量 含有되어 있었다. 7. 燐脂質의 脂肪酸組成은 3種의 加工치이즈에 있어서 共通的으로 oleic acid가 가장 많았고, 다음으로 palmitic acid, stearic acid 順으로 含有되어 있었으며, 國産 S₂加工치이즈의 경우 炭素數 20 以上인 高級脂肪酸이 0.67% 含有되어 他種에 비해 많았다. This study was undertaken to get the fundermental data for the manufacture of domestic process cheese. The composition of lipids in domestic and foreign process cheese (KRAFT) was examined by Thin-layer chromatography (TLC), densitometry and gas liquid chromatography. The results obtained were as follows: 1. The total lipid content and the ratio of neutral lipid, glycolipid and phospholipid in domestic process cheese S₁, S₂brand and foreign process cheese (KRAFT) were 27.76, 32.90, 26.11% and 99.09: 0.43: 0.48%, 99.32: 0.30: 0.38%, 98.92: 0.44: 0.64%, respectively. 2. In domestic process cheese S₁, S₂brand and foreign process cheese (KRAFT), the neutral lipid mainly consisted of triglyceride (91.49, 87.83, 82.95%), 1.3-diglyceride, 1.2-diglyceride, free-fatty acid and monoglyceride especially, free-fatty acid being larger in domestic process cheese S₁brand than in domestic process cheese S₂brand and foreign process cheese (KRAFT). 3. The glycolipid mainly consisted of ceramide monohexoside, ceramide dihexoside and ceramide trihexoside in common. The contents of these ceramide dihexoside and ceramide trihexoside showed much difference among them. Especially, the content of ceramide trihexoside was much higher than that of ceramide dihexoside in domestic process cheese of S₂brand. 4. The phospholipid mainly consisted of phosphatidyl ethanolamine, phosphatidyl choline and sphingomyelin. Besides, a very small amount of lysophosphatidyl choline was detected. 5. As for fatty acid composition of neutral lipid, palmitic acid had the highest amount of the three kinds of process cheese and followed by oleic, myristic and stearic acid orderly. 6. In the fatty acid composition of glycolipid, palmitic acid was distinctively the most abundant, being 31.75% in domestic process cheese of S₁brand, and 30.64% of foreign process cheese (KRAFT). The oleic acid was distinctively the most abundant (33.76%) in domestic process cheese of S₂brand. In common, very small amounts of the low molecular weight fatty acids were detected. 7. As for the fatty acid composition of phospholipid, oleic acid was in common the most abundant followed by palmitic acid and Stearic acid etc. in order. In the case of domestic process cheese S₂brand, the content of the long chain fatty acids with carbon number 20 or upward was 0.67% which was higher than any other process cheese.

축산물이용 ; 환원유를 이용한 Pizza cheese 제조시 원유와 환원유의 혼합비와 CaCl2 및 rennet 의 첨가량이 치즈 조직에 미치는 영향

유제현,정충일,김용휘,송화섭,안보길 한국동물자원과학회 ( 구 한국축산학회 ) 1991 한국축산학회 심포지움자료집 Vol.- No.-

Clinical Outcomes of U-blade Gamma3 Nails Used to Treat Patients with Trochanteric Fractures: Retrospective Multicenter Study

유제현,김상민,정호정,황지효 대한고관절학회 2019 Hip and Pelvis Vol.31 No.2

Purpose: This study was performed to assess the radiologic and clinical results of U-blade Gamma3 nail use for the treatment of trochanteric fractures. Materials and Methods: Between September 2015 and May 2018, all patients aged 65 years and older who underwent surgery with U-blade Gamma3 nails were analyzed. A total of 129 patients were selected based on having at least six months of follow-up. Image evaluations included bone quality (T-score), fracture classification on plain radiograph (AO/OTA), computed tomography configuration, union period, position of lag screw, anatomical reduction, tip apex distance (TAD), sliding extent of lag screw, change of neck shaft angle, and complications leading to reoperations were analyzed. Functional outcome were assessed using the Koval grade (ambulatory ability) at the final follow-up. Results: The mean time to union was 19.7 (range, 6-36) weeks. The screw position was centric (93 cases; 72.1%) and anatomical reduction was achieved in 74 cases (57.4%). The mean TAD was 20.3 (range, 12.3-38.1)mm. The mean sliding length of the lag screws was 3.8 (range, 0.1-12.6) mm. The mean change of neck shaft angle was 3.4。(range, 0-12.8。). Reoperations were required in two cases (1.6%) due to the cutting out of the lag screw (n=1) and metal failure with U-blade bending (n=1). Finally, Koval grades for 49.8% of patients reached preoperative status. Conclusion: Overall, use of the U-blade Gamma3 nail led to favorable clinical results, suggesting that this system may be a good option for the treatment of trochanteric fractures.

Osteoporotic Fracture: 2015 Position Statement of the Korean Society for Bone and Mineral Research

유제현,문성환,하용찬,이동연,공현식,박시영,양규현 대한골대사학회 2015 대한골대사학회지 Vol.22 No.4

Osteoporotic fractures are one of the most common causes of disability and a major contributor to medical care costs worldwide. Prior osteoporotic fracture at any site is one of the strongest risk factors for a new fracture, which occurs very soon after the first fracture. Bone mineral density (BMD) scan, a conventional diagnostic tool for osteoporosis, has clear limitations in diagnosing osteoporotic fractures and identifying the risk of subsequent fractures. Therefore, early and accurate diagnosis of osteoporotic fractures using the clinical definition which is applicable practically and independent of BMD, is essential for preventing subsequent fractures and reducing the socioeconomic burden of these fractures. Fractures caused by low-level trauma equivalent to a fall from a standing height or less at major (hip, spine, distal radius, and proximal humerus) or minor (pelvis, sacrum, ribs, distal femur and humerus, and ankle) sites in adults over age 50, should be first regarded as osteoporotic. In addition, if osteoporotic fractures are strongly suspected on history and physical examination even though there are no positive findings on conventional X-rays, more advanced imaging techniques such as computed tomography, bone scan, and magnetic resonance imaging are necessary as soon as possible.