볏짚의 사료가치 개선에 관한 연구 2 . 옥수수 및 요소 첨가수준과 Retention time 이 볏짚의 In Vitro 소화율에 미치는 영향

맹원재,오세정,최일,양양한 ( Won J . Maeng,Se J . Oh,Il Choi,Yang H . Yang ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6

Effects of different levels of corn and urea addition and retention time on the digestibility of rice straw (Mil Yang 23) were estimated in vitro. The optimum ratio of rice straw to corn for the highest dry matter digestibility of rice straw was 50% rice straw and 50% corn, and cellulose digestibility of rice straw was increased by increasing levels of corn in the incubation medium. Dry matter, neutral detergent fiber, acid detergent fiber and cellulose digestibilities of rice straw were highest when 0.5% urea on the dry matter basis of rice straw was added. Dry matter digestibility of rice straw was 13.3% when retention time was 24hours and was 24.6% and 35.1% when retention time was 48 hours and 72 hours which were 85% and 164% increases as compared with 24 hours. Digestibilities of neutral detergent fiber, acid detergent fiber and cellulose of rice straw were increased as increasing retention time as dry matter digestibility. Total amount of rice straw dry matter digested for a day was decreased 7.5% and 12.5%, respectively, when retention time was increased to 48 hours and 72 hours from 24 hours. But total amount of neutral detergent fiber, acid detergent fiber and cellulose digested for a day were increased 10.0%, 11.1% and 2.9% when retention time was 48 hours, and 12.5%, 44.4% and 38.2%, respectively, when retention time was 72 hours as compared with 24 hours.

감귤피를 급여한 교잡종 돼지 고기가 흰쥐의 지질대사, 단백질 농도 및 효소 활성에 미치는 영향

문윤희,양승주,정인철,양양한,고진복,Moon Yoon-Hee,Yang Seung-Joo,Jung In-Chul,Yang Yang-Han,Koh Jin-Bog 한국축산식품학회 2006 한국축산식품학회지 Vol.26 No.1

감귤피를 급여하지 않은 교잡종 돼지고기(대조구, $T_0$), 육성기와 비육기에 각각 3% 및 5% 급여한 돼지고기($T_1$), 그리고 6% 및 10%를 급여한 돼지고기($T_2$)등 3 종류를 각각 단백질로 환산하여 12% 되도록 흰쥐 식이에 첨가하였다. 이식이를 생후 17주령의 흰쥐에 4주간 급여하여 영양대사에 미치는 영향을 조사하였다. 대조구($T_0$)와 감귤피 급여구($T_1$과 $T_2$)의 사이에 흰쥐의 증체량, 식이섭취량, 식이효율, 장기(간, 신장, 비장, 부고환 지방)무게는 유의적 차이를 보이지 않았다. 혈청의 지질(총지질, 인지질, 중성지질, 총 콜레스테롤, HDL-콜레스테롤, LDL-콜레스테롤), 동맥경화지수, 혈당, 혈색소 함량 및 효소(${\gamma}-GTP$, ALT, AST, ALP) 활성은 모두 유의적 차이를 보이지 않았다. 흰쥐의 간에서 얻은 총지질 함량은 유의적 차이를 보이지 않았으나, 중성지질과 콜레스테롤 함량이 대조구보다 감귤피 급여구가 낮은 값을 보여(p<0.05), 감귤피 첨가 사료로 사육한 교잡종 돼지고기가 흰쥐 간의 중성 지질 및 콜레스테롤을 감소시키는 효과가 있는 것으로 나타났다. Three different diet were made with meat for Crossbred pig ($^{\circ}_{+}$, 195 days old, $l15{\pm}5\;kg,\;Landrace{\times}Yorkshire{\times}Duroc$) and used as feed for rats after transformed into 12% protein, These diets include a pork not fed with tangerine peel during finishing period (Control, $T_0$), a pork fed with 3 and 5% tangerine peel during growing and finishing period, respectively ($T_1$), and a pork fed with 6 and 10% tangerine peel during growing and finishing period respectively($T_2$). The effects of the diet on physiological activities of rats were studied by feeding 17 weeks-old Sprague-Dawley rats with the three diets for 4 weeks. The feed intake, weight gain, feed efficiency ratio, and weight of liver, kidney, spleen and epididymal fat pad for the rats was similar among the diets. The total lipid level of liver was similar among $T_0,\;T_1\;and\;T_2$. However, it was found that $T_1\;and\;T_2$ had significantly lower triglyceride and cholesterol level than $T_0$(p<0.05). All the diet groups showed similar trends in terms of the serum total lipid, phospholipid, triglyceride, total cholesterol, HDL-cholesterol and LDL-cholesterol level, and atherogenic index, hemoglobin level, and ${\gamma}-GTP$, ALT, AST and ALP activities.

조사료의 발효율 및 발효속도측정 2 . 보리짚

맹원재,양양한,최일 ( Won J . Maeng,Yang H . Yang,Il Choi ) 한국축산학회 1980 한국축산학회지 Vol.22 No.5

In vitro fermentation characteristics such as rates and extents of total and potentially digestible dry matter, cell wall constituents (CWCO), acid detergent fiber(ADF) and cellulose were determined for barley straw which were incubated for 6, 24, 36, 48, 72 and 144 hours at 39℃ in water bath. Potentially digestible dry matter (PDDM), potentially digestible CWC (PDCWC), potentially digestible ADF(PDADF) and potentially digestible cellulose (9PDcellulose) of barley straw were 59.2%, 55.3%, 46.5% and 59.6%, respectively, which were calculated by differences from indigestible residues remaining after 144 hours incubation. Fermentation rate constants and fermentation time of dry matter, CWC, ADF and cellulose of barley straw were 0.00912hr^(-1), 0.00888hr^(-1), 0.00715hr^(-1), and 0.01218hr^(-1), and 109.7hr, 112.6hr, 139.9 hr and 82.10hr, respectively. Fermentation rate constants and fermentation time of PDDM, PDCWC, PD ADF and PDcellulose of barley straw were 0.03117hr^(-1), 0.02643hr^(-1), 0.03020 hr^(-1) and 0,04630hr^(-1), and 32.1hr, 37.8hr, 33.1hr and 21.6hr, respectively.

볏짚의 품종별 사료가치 비교

맹원재,양양한,최일 ( Won J . Maeng,Yang H . Yang,Il Choi ) 한국축산학회 1979 한국축산학회지 Vol.21 No.6

Chemical compositions and in vitro digestibilities were estimated to evaluate the nutritive values of the different varieties of rice straws, The rice varieties used in this study were the Indica x Japonica breeding lines, Suweon 264 and Milyang 23, and Japonica, Jinheung, The heights of Milyang 23, Jinheung and Suweon 264 were 98㎝, 95㎝ and 70.4㎝, respectively, and the proportions of grain and straw were 53.8% and 46.2% of the total rice plant on a dry matter basis, Leaf blade, leaf sheath and stem were 29.6%, 36.4% and 33.9%, respectively, of the total rice straw on a dry matter basis, Crude protein and cell content were slightly higher and cell well constituents, acid detergent fiber, cellulose and lignin contents were slightly lower in Suweon 264 as compared with Jinheung and Milyang 23, but there were no differences between Jinheung and Milyang 23. Leaf sheath contained the highest amounts of cell wall constituents, acid detergent fiber and cellulose followed by leaf blade and stem. In vitro dry matter, cell wall constituents, acid detergent fiber andcellulose digestibilities of rice straw were the highest in Suweon 264 followed by Jnheung, and Milyang 23 was the least. In vitro dry matter, cell wall constituents, acid detergent fiber and cellulose digestibilities were the highest in stem and there were no differences between leaf sheath awe leaf blade.

조사료의 발효율 및 발효속도 측정 1 . 볏짚

맹원재,최일,양양한 ( Won J . Maeng,Il Choi,Yang H . Yang ) 한국축산학회 1980 한국축산학회지 Vol.22 No.3

Rates and extents of fermentation and potentially digestible dry matter, cell wall constituents(CWC), acid detergent fiber (ADF) and cellulose of rice straw(Suweon 264) were determined in vitro, Potentially digestible dry matter(PDDM), Potentially digestible CWC(PDCWC), Potentially digestible ADF (PDADF) and potentially digestible cellulose (PDcellulose) of rice straw were 54.2%, 46.5%, 46.5% and 51.8%, respectively. Fermentation rate constants and fermention time of dry matter, CWC, ADF and cellulose of rice straw were 0.0075 hr^(-1), 0.0082hr^(-1) and 0.0096 hr^(-1) and 134 hr, 122 hr, 126 hr and 105 hr, respectively, Fermentation rate constants and fermentation time of PDDM, PDCWC, PDADF and PDcellulcose of rice straw were 0.0293 hr^(-1), 0.0348hr^(-1), 0.0336 hr^(-1) and 34 hr, 29 hr, 30 hr and 28 hr, respectively.

한중 고구려 역사 귀속 문제에 대한 재고찰 : 중국 국사연구의 몇 가지 이론문제를 중심으로

양양(Yang, Yang)(楊楊) 대한중국학회 2020 중국학 Vol.73 No.-

중국 동북공정으로 촉발된 고구려 역사 귀속문제는 한중 양국 간의 역사문화 갈등중 가장 대표적인 사례다. 그동안 중국에서는 통일다민족국가론에 입각하여 영토주권론을 내세움으로써 고구려 역사를 민족, 강역 등 측면에서 자국의 ‘국사’로 규정해왔다. 그러나 2010년 이후부터 학계에서 중국 국사 이론의 구축 및 민족, 강역 등과 관련된 개념에 대한 인식은 이전과 크게 달라지면서 과거 연구 이론 위에 구축된 고구려사 인식은 점차 이론적 근거를 잃게 되었다. 이 같은 현실적 배경을 바탕으로 본 논문은 현재 중국 국사 연구의 새로운 동향을 결합하여, 과거 중국 국사 서술에서의 이론적 구축 문제를 다시 돌아봄으로써 한중 고구려 역사 귀속 문제에 대한 중국학자들이 가진 몇 가지 인식 오류를 살펴보고자 한다. The issue of Goguryeo‘s attribution, sparked by China’s Northeast Project, is one of the most representative cases of historical and cultural conflicts between Korea and China. The existence of this issue has had an invisible and passive effect on friendly intercourse between two countries for a long time. Over the past years, Korean academia has always made this issue an important concern, while China has not shown much interest. At present, awareness of the problem of the attribution of Goguryo history in China is still built on past research theories. In fact, however, the establishment of Chinese historial theory and the perception of concepts related to nation, ethnicity, and frontiers etc .in academia have changed greatly from before. Based on this realistic background, this paper aims to combine the new trends in the study of Chinese national history, review the theoretical construction issues in the narratives of Chinese national history in the past, and then reflect on several cognitive fallacies made by Chinese scholars in the dispute over the historical attribution of Koguryo between China and South Korea.

한ㆍ중 여성잡지 색조화장품 광고표현 비교

장양양(Zhang Yang-yang),명광주(Myung Kwang-joo) 한국디자인학회 2010 디자인학연구 Vol.23 No.4

압전 액추에이터를 이용한 소구경 능동 방진 보링바 기초연구

곽양양(Yang-Yang Guo),홍준희(Jun-Hee Hong),송두상(Doo-Sang Song) 한국생산제조학회 2013 한국생산제조학회지 Vol.22 No.4

In this paper, we present a case study of vibration suppression based on the application of active damping to the small boring process of a boring bar with diameter below Φ12. The proposed active damping system consists of an acceleration sensor for real-time monitoring of the vibration signal, a driver for phase control in a computer program, and piezoelectric actuators for damping. In this system, the vibration signals are detected by the acceleration sensor and sent to the computer as an input. The phase shift parameter of the natural frequency of the input signal is sent to the data acquisition board in the computer and calculated by the phase control program. This study confirmed the effectiveness of this damping system, and it opens up the possibility of the development of active damping systems for small boring processes.

유한요소해석을 통한 기둥-보 강판 보강 효과 분석

양양 ( Yang Yang ),이강민 ( Lee Kangmin ),오근영 ( Oh Keunyeong ),홍성빈 ( Hong Sungbin ),소재혁 ( So Jaehyuk ) 한국구조물진단유지관리공학회 2015 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.19 No.1

외래관광객 관광만족도와 행동의도 간 비선형 관계

양양(Yang, Yang),김진후(Kim, Jin-hoo) 한국호텔외식관광경영학회 2021 호텔경영학연구 Vol.30 No.3