신 개념 Dry Separator 내 미분 분리의 원리 및 전산수치해석에 의한 유동해석

박성욱(Sung Uk Park),강양수(Yang Su Kang),강상모(Sangmo Kang),서용권(Yong Kweon Suh) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11

Fine aggregates of mineral products, waste concrete, and waste in the general industry can be segregated according to aggregate size by using separators, i.e. sorting machines. The various types of separators used in the industrial field can be categorized based on the principle of operation such as centrifugal force, wind power, vibration and magnetic force. In this study, we consider a dry separator of new concept which consists of a rotor with three stages of rotating blades. The air flow and particle tracking is analysed numerically to understand the behavior of waste concrete particles as they pass through the rotor blades. Intention of this work is to investigate the fundamental mechanism of particle separation from the developed separator and investigate its performance. We consider both 2D and 3D models with 360, 240 and 180 blades in each stage of the rotor. Due to the axi-symmetry, only 6 degree sector of the entire domain is considered as the computational domain. The models are tested for various particle size, the rotor speed and the air flow rate. We found that the rotor plays a significant role in the particle separation. In particular, both the upstream and downstream ends of the rotor blades cause the particles to be stagnant there via balance between the air drag and centrifugal forces. We also present the critical size of particles that can be separated with the existing design of the separator.

엘크 사슴육의 물리화학적, 지방산 조성 및 관능적 품질 특성

김일석,진상근,하경희,박석태,곽경락,박정권,강양수,Kim Il-Suk,Jin Sang-Keun,Hah Kyung-Hee,Park Seok-Tae,Kwuak Kyung-Rak,Park Jung-Kwon,Kang Yang-Su 한국축산식품학회 2006 한국축산식품학회지 Vol.26 No.1

본 연구는 엘크 사슴고기(Elk deer, Cervus elaphus andadensis)에서 생산된 등심(T1)과 뒷다리 부위(T2)에 대한 품질특성을 파악코자 실시되었으며, 분석 결과는 다음과 같다. T2가 T1보다 수분 함량은 낮고, 단백질 함량은 높았으며, 전단가는 낮고 보수력은 높았다. 육색 측정 결과 T1 및 T2 간 명도, 적색도, 황색도 모두 유의적인 차이가 없었다. 조직 특성 조사에서 경도, 부착성, 검성 및 파쇄성은 유의적인 차이가 있었으나, 응집성과 탄력성은 유의적인 차이가 없었다. 지방산 조성은 T2가 myristic acid와 linoleic acid의 함량이 각각 5.06와 10.37%로 T1이 유의적으로 높았으며(p<0.05), palmitoleic acid는 그 반대였다. SFA와 UFA는 두 부위 간 유의적인 차이가 없었으나 EFA는 T1이 유의적으로 높았다. 전체적인 기호도는 유의적인 차이 없이 신선육에서 T2가 다소 높았고, 가열육에서는 오히려 다소 낮게 나타났다. This study was carried out to evaluate the quality characteristics on the two different muscles (Loin; T1, Ham; T2) from the Cervus elaphus andadensis (Elk deer). The water content and shear force of T1 were lower than that of T2. The protein content and water holding capacity were lower in T2 compared to the T1. In meat color, $L^*,\;a^*\;and\;b^*$ values were not different between T1 and T2. In the texture properties, there were significantly (p<0.05) differences in hardness, adhesiveness, gumminess and brittleness, but cohesiveness and springiness were not different significantly (p<0.05). In fatty acid analysis, myristic acid and linoleic acid of T2 were high (p<0.05) as 5.06 and 10.37% respectively, while palmitoleic acid of T1 were significantly (p<0.05) higher than that of T2. SFA and UFA were not different between the T1 and T2, although EFA of T1 was significantly (p<0.05) higher than that of T2. In sensory evaluation, acceptability of T2 in fresh meat showed the slightly high, but that of T2 in cooked meat was slightly low score. All samples were not significantly different in overall acceptability.

건조시간을 달리하여 제조한 사슴고기 육포의 저장 중 품질 특성 변화

김일석,진상근,박기훈,김동훈,하경희,박석태,곽경락,박정권,강양수,Kim Il-Suk,Jin Sang-Keun,Park Ki-Hoon,Kim Dong-Hoon,Hah Kyung-Hee,Park Seok-Tae,Kwuak Kyung-Rak,Park Jung-Kwon,Kang Yang-Su 한국축산식품학회 2006 한국축산식품학회지 Vol.26 No.2

$75^{\circ}C$로 조정된 훈연실에서 각각 3시간 (T1), 4시간(T2), 5시간(T3) 동안 건조시간을 달리하여 제조한 사슴고기의 육포를 함기포장(Nylon/PE)하여 $20{\pm}1^{\circ}C$에서 저장하면서 물리화학적, 미생물학적 및 관능적 특성을 조사하였다. pH는 저장기간이 길어짐에 따라 건조시간이 긴 T2 및 T3 처리구들이 T1에 비해 다소 낮은 경향을 보여 주었다. TBARS 값은 건조시간과 저장기간이 길수록 T2와 T3가 T1보다 높았다(p<0.05). 육색 측정 결과, 처리간에서는 T3의 $L^*$ 값이 다소 높은 경향을 보였고, 적색도($a^*$)는 뚜렷한 경향이 없었으나, 황색도($b^*$)는 T1보다 T2 및 T3에서 높았다. 수분활성도는 T3, T2, T1 순으로 유의적으로 낮게 나타났다(p<0.05). 조직감은 처리 간 유의적인 차이가 없었다. 총균수는 저장 28일까지 4.45 log CFU/g 미만으로 섭취에 이상이 없었다. 이상의 결과에서 지방산패도 및 관능적 측면을 고려할 때 T2 및 T3가 T1보다 다소 양호한 조건이었다. To determine the proper processing and storage conditions, physico-chemical, microbial and sensory properties of venison jerky under different dry times were measured during storage at $30^{\circ}C$ for 28 days. Samples were dried for 3 hr (T1), 4 hr (T2) and 5 hr (T3) at $75^{\circ}C$ in the smoke chamber, respectively. The pH of T1 was slightly lower than those of T2 and T3 as storage time increased. As dry and storage time increased, TBARS of T2 and T3 were significantly higher (p<0.05) than that of T1. In meat color, $L^*$ values of T3 showed slightly higher than those of T1 and T2, while at values were not clearly tendency by the passage of storage time. $b^*$ values of T2 and T3 were higher than that of T1. The water activity were significantly lower (p<0.05) in ,the order of T3<T2<T1. There was not significantly difference in texture among the treatments. The number of total plate counts (TPC) were below 4.45 $log_{10}$ CFU/g until 28 days and its number were accepted by sensory evaluation. In conclusions, T2 and T3 showed slightly high overall acceptability and lipid oxidative stability compared to T1 conditions. These results indicated that longer dry time ($4{\sim}5 hr$) of venison jerky would be better characteristics as compared to shorter dry time (3 hr) with increased storage time at $30^{\circ}C$.

파프리카 여름재배시 차광방법이 생육과 과실특성에 미치는 영향

하준봉(Jun Bong Ha),임채신(Chae Shin Lim),강효용(Hyo Yong Kang),강양수(Yang Su Kang),황승재(Seung Jae Hwang),문형수(Hyung Su Mun),안철근(Chul Geon An) (사)한국생물환경조절학회 2012 생물환경조절학회지 Vol.21 No.4

파프리카(‘Cupra’, ‘Coletti’) 여름작기 재배시 고온기 극복을 위해 내부 차광 스크린(외부광이 700W ·m<SUP>?2</SUP> 이상일 때 차광스크린 작동하여 10~20% 차광률 유지)과 차광제 처리(차광제와 물을 1 : 4의 비율로 희석하여 온실 외부 지붕을 살포 30% 정도의 차광률 유지)의 효과를 분석하고자 연구를 수행하였다. PPFD는 차광제 처리구가 무처리구에 비해 30%, 내부 스크린 처리구에 비해 20% 감소시키는 효과를 보였다. 차광제 처리구에서 무처리구와 내부 스크린 처리구에 비해 PPFD의 감소시키는 효과를 보여 차광제의 차광효과가 더 높았고, 차광제 처리에 의해 온실 내 온도감소효과가 더 높게 나타났다. 습도 부족분 변화는 무처리구와 내부 스크린 처리구의 경우 오전 9시에 최대 허용범위인 8g · m<SUP>?3</SUP>을 벗어나 각각 오후 2시에 최고 16.6g · m<SUP>?3</SUP>와 13.8g · m<SUP>?3</SUP>까지 도달 했지만, 차광제 처리구에서는 무처리구와 내부 스크린 처리구보다 2시간 뒤인 11시에 8.6g · m<SUP>?3</SUP>으로 허용 범위를 벗어났고, 오후 4시에 최고 12.1g · m<SUP>?3</SUP>까지 상승하여 생육환경 조건이 더 양호해졌다. 차광제 처리구와 내부 스크린 처리구에서 무처리구에 비해 엽온이 2℃, 과실의 온도가 5℃, 그리고 꽃의 온도가 3℃ 정도 낮아지는 효과를 보였다. 차광제 처리구와 내부 스크린 처리구에서 무처리구에 비해 초장이 두 품종 모두에서 유의적으로 길어졌고, 분지수, 경경, 잎크기는 유의성이 인정되지 않았다. 잿빛곰팡이의 발생률은 무처리구에 비해 차광제 처리구에서 품종에 따라 14.7~22.1% 감소하는 효과가 있었다. 과실크기는 차광처리에 의해 두 품종 모두에서 무처리구에 비해 증가하였으나, 심실수, 과피 두께는 유의한 차이를 보이지 않았다. 과육의 무게는 차광제 처리구와 내부 스크린 처리구에서 10~15g 증가하였지만, 당도는 감소하는 경향을 보였다. 차광에 따른 색도는 차이가 없었고, 경도는 차광 시 약간 증가하는 경향을 보였다. 수량은 무처리구에 비해 차광제 처리구와 내부 스크린 처리구에서 상품율이 11.7~22.6% 증가하였고, 상품과수는 4.0~12.2개로 증가했다. 따라서 무처리구에 비해 차광제 처리구에서 여름철 고온기의 극복에 효과가 있는 것으로 나타났다. This study was carried out to investigate the effect of two shading methods, shading agent spray on the glasshouse and internal shading screen treatment, on the growth and fruit quality of paprika (Capsicum annuum L. ‘Cupra’ and ‘Coletti’) in summer season cultivation. In the shading agent treatment, a commercial shading agent diluted with water at a ratio of 1 : 4 was sprayed on the roof of a glasshouse. In the internal shading screen treatment, a 10~20% shaded screen was used during the day time when the sun radiation was greater than 700W· m<SUP>?2</SUP>. Compared to the unshaded control, photosynthetic photon flux density (PPFD) decreased in the greenhouse in the shading agent (SA) and shading screen (SS) treatments by 20% and 30%, respectively. Lower air temperatures and higher relative humidities were observed in the SA than in both the control and the SS treatment. Time to reach the break point of humidity deficit 8 g · m<SUP>?3 </SUP>was 2 hours late in the SA than in both the control and the SS treatment. Compared to control, both the SA and the SS treatments showed lower instantaneous temperatures of leaf, fruit, and flower by 2℃, 5℃ and 3℃, respectively. There were no differences in number of branches, stem diameter, and leaf size among treatments although both shading treatments promoted plant height in both cultivars. Botrytis infection ratio declined with the SA treatment by 14.7% in ‘Cupra’ and 22.1% in ‘Coletti’ as compared to that in the control. Shading increased fruit size in both cultivars, whereas no differences were observed in the number of locules and thickness of fruit tissue among treatments. Shading treatment increased mean fruit weight by a range of 10 to 15 g per fruit, while it decreased soluble solids contents as compared to that in the control. Similar Hunter values were observed among treatments, while fruit firmness increased slightly in shading treatments. Compared to the control, shading treatments improved marketable fruits by 11.7~22.6% and increased the number of fruits per plant by 4~9.2 in both ‘Cupra’ and ‘Coletti’. The results of this study indicate that shading agent application on the roof of glasshouse would be one of the most effective options to reduce heat stress imposed on the paprika crop in summer cultivation, resulting in improved crop growth and fruit yield.

연구 보문 : 계층분석과정(AHP)에 의한 지역농업정책의 우선순위 결정: 창녕지역을 중심으로

김태완 ( Tae Wan Kim ),김철욱 ( Chul Wook Kim ),강양수 ( Yang Su Kang ) 한국국제농업개발학회 2010 韓國國際農業開發學會誌 Vol.22 No.1

바비큐 및 장조림 소스로 제조한 사슴고기 통조림 제품의 품질특성 비교

김일석,진상근,하경희,박기훈,정기종,박석태,곽경락,박정권,강양수,Kim Il-Suk,Jin Sang-Keun,Hah Kyung-Hee,Park Ki-Hoon,Jung Gi-Jong,Park Seok-Tae,Kwuak Kyung-Rak,Park Jung-Kwon,Kang Yang-Su 한국축산식품학회 2006 한국축산식품학회지 Vol.26 No.1

캔에 105 g씩 충전하여 $121^{\circ}C$에서 30분간 가열처리한 두 종류의 사슴 캔 개발 제품(T1; 바비큐 소스, T2; 장조림 소스)의 품질 특성을 조사한 결과는 다음과 같다. 사슴 캔 제품의 품질 특성에 있어 T1이 T2에 비하여 pH, 염도, 당도는 낮고, TBARS 및 VBN은 높았다. 관능검사 결과, $30^{\circ}C$에서 저장 60일 전 기간 T1과 T2 모두 6.0 이상의 좋은 점수를 얻었기에 상품화 가능성이 있을 것으로 판단되었다. The objective of this study was to investigate the quality characteristics of canned deer meat produce with prepared BBQ sauce (T1) and Jangjorim sauce (T2). The mixture were stuffed into cylindrical can (about 150 g each) and thermally processed at $121^{\circ}C$ for 30 min, the sample were stored at $30{\pm}1^{\circ}C$ for 60 days and analyzed with an interval of 30 days. pH, salinity, saccarinity of T1 were significantly lower (p<0.05) than that of T2. TBARS and VBN of T1 were significantly higher (p<0.05) than that of T2. In the result of sensory evaluation, all product obtained good score (p>6.0) in overall acceptability during whole storage at $30{\pm}1^{\circ}C$. Theses result should be useful in developing guidelines for canned deer meat preparation by consumer and processors.

Ear piercing후 발생한 Earlobe keloid의 치료 및 Piercing의 재건

강양수,임홍철,류봉수,이명주,양정열 대한미용성형외과학회 1998 Archives of Aesthetic Plastic Surgery Vol.4 No.1

안면골 골절의 임상적 고찰

강양수,류봉수,이명주,양정열,임홍철 조선대학교 부설 의학연구소 1999 The Medical Journal of Chosun University Vol.24 No.2

Background and Objective: The facial region is defined for our purposes as the whole face, together with the underlying viscera and skeletal structure. The epidemiology of facial injuries is of practical importance for several view points, not least in planning trauma services. Materials and Method: This retrospective study include 815 patients of facial bone fractures who were treated at the Department of Plastic and Reconstructive Surgery at the Chosun University Hospital between January 1994 and December 1998. These patient's medical records were then retrospectively analysed in order to gain insight into a clinical pattern. Results and Conclusion: An analysis datas were as follow: An increase of fractures of 10.2% per year was noted. The injuries were most frequently occured in July(10.4%), Saturday(23.9%) and between 18:00 and midnight. Most injuries occured in young male with the highest incidence in the third decade of life and males were predominated more than female, 3.4 to 1. The most common cause of fractures were traffic accident(42.3%) followed by assault, fall(or slip) down and others. Among the number of fractures, the most common fractures were found in the nasal bone(25.2%) followed by zygoma, maxilla, orbit, mandible and frontal bone. Associated soft tissue injuries were combined in 58%, and the other site of fractures associated with facial bone were developed in 22.2%. The average interval between onset to arrival and onset to surgical intervention was 2.48 hours, 6.2 days, and average hospital day was 12.7 days. Treatment for fractures were consist of open reduction(52.8%), closed reduction(19.5%) and conservative treatment(15.6%). The complication rate was 15.2% and most common complication was the eye problem, followed by post-traumatic psychosis and facial asymmetry.