This study was carried out to establish the system of OPU derived embryo production, management of recipients as well as offspring production. OPU derived embryo production system was carried out of aspiration of immature oocytes 2 times per week, total 24 times for 3 months by an ultrasonographic guided follicular aspiration system and then produced in vitro-produced blastocysts by in vitro maturation, fertilization and culture system. This work was collected total 13,866 oocytes, average 8.2±4.5 oocytes per session and 8,170 G1 + G2 grade oocytes, average 4.8 oocytes per session by 1,692 times session of total 71 donors for 4 years from 2010 to 2013. The rate of cleavage and blastocyst developmental competence were obtained 11,825 (85.3%) and 5,032 (36.3%) that was 7.0±3.8 cleaved embryos and 3.0±2.5 blastocysts per session. OPU derived embryo transfer were taken place in 2, 4, 6 and 7 local governments at 2010, 2011, 2012 and 2013 for 4 years and pregnancy rate were obtained 41.2, 43.9, 46.5 and 49.7% in each years. It means that pregnancy rate was continuously improved according of every year for 4 years. Pregnancy rate was significantly different according to individual local government in which was 62.7% in B, but 24.2% in F at 2012. Paternity identification was carried out total 26 offspring in C local government of 2012 and then confirmed 100% agreement of its analysis. In conclusion, the results obtained the possibility of mass production of elite cow embryos as well as offspring by OPU derived embryo production system, of which could be decreased the required time of genetic improvement.

본 연구에서 한우를 공란우로 사용하여 OPU 방법으로 가장 더운 계절의 hot season과 선선한 cool season의 두 계절의 차이에 따른 생성된 난포의 수, 난자 회수율, 난자 등급율, 수정율 및 배반포 발달 능력을 분석하여, 두 계절이 공란우의 번식 능력에 미치는 영향에 관하여 조사하였다. 1. 계절의 영향이 OPU 공란우의 난포 생성 수에 미치는 결과는 난포 생성 개수는 1154개(18.32±2.26), 971개(15.41±3.34)로 hot season 그룹이 유의적으로 높은 것을 알 수 있었다(p＜0.05). 2. 계절에 따른 난자 수 및 난자 회수율은 hot season 그룹의 475개(7.54±3.14), 41.16%로 cool season 그룹 448개(7.11±3.42), 46.14%와 비교하여 유의적인 차이가 없었다(p＜0.05). 3. OPU를 통하여 회수된 두 계절별 난자 등급은 Grade A는 Hot season 그룹 110개(1.75±1.86), Cool season 그룹 63개(1.00±1.46)로 hot season 그룹이 cool season 그룹과 비교하여 유의적으로 높았다(p＜0.05). 하지만 다른 등급인 Grade B는 87개(1.38±1.60) vs. 97개(1.54±1.39), Grade C는 166개(2.63±2.43) vs. 170개(2.70±2.04), Grade D는 112개(1.78±2.65) vs. 118개(1.87±1.86)로 hot season과 cool season 간의 유의적인 차이를 보이지 않았다(p＜0.05). 4. 계절에 따른 체외 수정 후의 수정률은 hot season과 cool season 각각 242(66.67%)와 209(63.3%), 배반포 발달율 214(58.95%) vs. 188(56.97%)로 수정률과 배반포 발달율은 유의적인 차이가 없었다(p＜0.05). 본 연구의 결과로 계절에 따른 영향에 의해 공란우의 난포생성수와 A등급의 난자 출현율에서 유의적인 차이를 보였다. 하지만 나머지 등급의 난자 출현율, 수정률 및 배반포 발달율은 차이가 없는 것으로 보아, 계절의 차이로 인한 한우 공란우의 번식 능력에 미치는 영향은 미비하다고 판단된다.

기후변화에 대비한 고온성 품종을 육성하기 위하여 유전자원을 수집하고 표준재배온도보다 5˚C 높은 20˚C에서의 자실체 특성을 평가하고 생육소요일, 품질, 수량을 기준으로 육종모본을 선발하고 단핵균사를 채취하여 단교배하였다. 생육소요일을 기준으로 선발한 KNR2523과 품질 수량으로 선발한 “다“계통간의 단교배에 의해 다×KNR2322-32×15가 생육소요일수(14.9일)과 수량(120.6 g), 품질(7.0)로 선발되었다. 선발된 계통을 태양송이라고 명명하고 대량재배로 큰느타리2호와 생육특성을 비교하였다. 수량은 태양송이가 109.0 g으로 대조품종의 70.6 g의 154% 수준이며, 통계적으로 분산분석결과 0.001% 수준에서 고도의 유의성을 보였다. 품질은 태양송이는 6.6, 큰느타리2호는 3.5로 나타나서 우수하였다. 갓의 명도에 있어서 태양송이는 고온임에도 불구하고 59.5의 수치를 보여서 대조구보다 10정도 낮았다. 고유성에 있어서는 URP2프라리머에서 큰느타리2호와 근친품종 애린이3과 다형성을 보였다.

NiO catalysts were successfully coated onto FeCrAl metal alloy foam as a catalyst support via a dip-coating method. To demonstrate the optimum amount of NiO catalyst on the FeCrAl metal alloy foam, the molar concentration of the Ni precursor in a coating solution was controlled, with five different amounts of 0.4 M, 0.6 M, 0.8 M, 1.0 M, and 1.2 M for a dip-coating process. The structural, morphological, and chemical bonding properties of the NiO-catalyst-coated FeCrAl metal alloy foam samples were assessed by means of field-emission scanning electron microscopy(FESEM), scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS), X-ray diffraction(XRD), and X-ray photoelectron spectroscopy(XPS). In particular, when the FeCrAl metal alloy foam samples were coated using a coating solution with a 0.8 M Ni precursor, well-dispersed NiO catalysts on the FeCrAl metal alloy foam compared to the other samples were confirmed. Also, the XPS results exhibited the chemical bonding states of the NiO phases and the FeCrAl metal alloy foam. The results showed that a dip-coating method is one of best ways to coat well-dispersed NiO catalysts onto FeCrAl metal alloy foam.

Mucoepidermoid carcinoma, a malignant neoplasm of salivary gland, rarely arises within the jaws. Differential diagnosis should include an odontogenic cyst because the central mucoepidermoid carcinoma usually reveals either an unilocular or multilocular radiolucency with hyperostotic border. Long-term follow-up is needed due to late recurrence and clinical slow progress like other salivary gland tumors. We would like to report an unusual case of central mucoepidermoid carcinoma with a review of literature.

In order to suggest the methodology for improving the equity of flow distribution in open channel with multiple outlet, CFD simulations were carried out for actual scale distribution channel being operated in domestic G_WTP(Water Treatment Plant). Also, before and after installing the longitudinal multi hole(diameter=250 mm, 116 holes) baffle suggested by this research, turbidity measurements data were collected for evaluating the effects of hydraulic modification for inlet flow equity. From the both results, total turbidity of settled water was lowered by 30 % and equity of flow distribution was improved about 60 % compared with before hydraulic structure modification.

The heat transfer characteristics of laminar syngas-fuel/air mixture with 10% hydrogen content impinging normally to a flat plate has been conducted experimentally. There were investigated by the effects of impinging distance, Reynolds number and equivalence ratio as major parameters on heat fluxes of stagnation point with the direct photos and data acquisitions from heat flux sensor. There were 3 times of maximum and 2 times minimum heat flux of stagnation point with respect to the impinging distance for the investigation of Reynolds number and equivalence ratio effect. The heat transfer characteristics between the stagnation and wall jet region in radial heat flux profiles was also investigated by the heat flux profiles.

본 연구는 조사료 종류와 수확시기에 따른 linoleic acid 함량 변화를 조사하기 위해 수행되었다. 우리나라에서 재 배되는 주요 목초 및 사료작물에 대하여 3번의 수확시기로 구분하여 분석을 하였으며 전체 19종의 목초 및 사료작물 이 조사대상 이었다. 대상작물은 우리나라에서 많이 재배 되는 8종의 화본과 목초(Perennial ryegrass, Reed canarygrass, Tall fescue, Timothy, Bromegrass, Kentucky bluegrass, Orchardgrass and Wheat grass), 6종의 두과목초 (White clover, Red clover, Sweet clover, Crimson clover, Alfalfa and Hairy vetch), 그리고 5종의 월동 사료작물 (Italian ryegrass, Barley, Rye, Oat and Rape)에 대하여 3번 의 수확시기를 두었다(5월 8일, 5월 19일 및 5월 28일). 화본과 목초 중에서는 Reed canarygrass와 timothy가 가장 높은 linoleic acid 함량을 나타내었고 남방형 목초인 bromegrass가 가장 낮았다. 모든 초종은 5월 19일 조사 시 가장 높은 농도를 나타내었고 5월 28일 조사 시 가장 낮았 다. 두과목초는 화본과 목초보다 linoleic acid 함량이 높게 나타났으며 5월 19일 수확 시 가장 높은 농도를 보였다. 사료작물 중에서는 유채가 가장 높은 농도를 보였으며 호 밀은 높은 수준이었다. 조사된 전체 조사료에서 수확시기 가 진행됨에 따라 linoleic acid 함량이 감소하는 것으로 나 타났다. 이상의 연구를 종합하여 볼 때 육종, 품종의 선택 및 재배관리를 통하여 CLA 전구물질인 linoleic acid 함량 을 변화시켜 반추가축 생산물의 조성을 변화시킬 수 있는 것으로 나타났다.

최근 지구온난화에 대한 우려가 증가되면서 농업분야에도 저탄소 녹색성장에 대한 필요성이 대두되고 있으며 친환경 유기 농산물에 대한 관심이 높아지고 있다. 본 연구에서는 친환경 유기농업을 위하여 녹비작물로 헤어리베치를 재배하여 이앙 1개월 전에, 트랙터 부착형 진압기로 진압하여 녹비작물을 피복하였다. 피복 직후 물을 관수하여 헤어리베치를 부숙시킨 후 경운작업 없이 이앙할 부분만 경운 동시에 이앙하여 녹비작물 피복 논에서 부분경운효과를 분석하였다.

In this study, we conducted field surveys to investigate and analyze species and length composition of catch from gape net with wings being set in two areas - Masari, Supomri - located in southern part of Jin-do for understanding fishing characteristics of gape net with wings fishery from March to September of 2011. And with those results, we attempted to propose fishery management strategy to harvest fisheries resources continuously. Catch obtained from field surveys comprised total 78 species, which accounted for 53 species of fish, 20 species of crustacean, 4 species of cephalopod and one of polychaete. As to species composition in weight, it showed that there was 88.5% for pisces, 9.0% for cephalopoda and 2.5% for crustacea. As to catch specifics by area, there was 36 species (596,891 individual, 456,551g) of pisces, 17 species (35,815 individual, 12,909g) of crustacea and 3 species (2,876 individual, 3,004g) of cephalopoda in Masari area. In Supumri area, there was 41 species (396,898 individual, 281,457g) of pisces, 15 species (16,113 individual, 7,772g) of crustacea and 4 species (6,792 individual, 72,329g) of cephalopoda and one polychaeta (36 individual, 11g). Catch of anchovy by month recorded on high level on June, July, September in both areas. When considering size composition by month, it was found that new populations recruit to these fishing grounds on June and September. Most of bycatch species including hairtail (Trichiurus lepturus), dotted gizzard shad (Konosirus punctatus), conger eel (Leptocephalous), Pacific sandlance (Ammodytes personatus), horse mackerel (Trachurus japonicus) were juvenile, and grass puffer (Takifugu niphobles), Kammal thryssa (Thryssa kammalensis), Japanese sardinella (Sardinella zunasi) were also small in size. As a result, it is considered that gape net with wings fishery which is likely to catch juvenile needs to be set fishing prohibit period for conserving above stocks during the period excluding main fishing periods of anchovy or fisheries management such as expanding mesh size for preventing juvenile catch.