• Archives of Plastic Surgery
• /
• 제39권2호
• /
• pp.162-165
• /
• 2012

The synchondrosis between the sixth and seventh costal cartilage is usually used for the base frame in autogenous ear reconstruction. If the synchondrosis is loose, a variety of modifications can be devised. This report introduces new methods for these problems. In cases of incomplete synchondrosis, only the surface of the base block margin was smoothly tapered without carving for the removal of the conchal deepening. The secure fixation of the two segments (helix and antihelix) to the base block using fine wire sutures gave stability to the unstable basal frame. After confirming that all the segments were assembled in one stable piece, the remaining conchal deepening of the basal framework was removed, and the outer lower portion of the basal cartilage was trimmed along its whole length. A total of 10 consecutive patients with microtia, ranging from 8 to 13 years old, were treated from 2008 to 2009. The follow-up period was 6 months to 2 years. Despite incomplete synchondrosis, the stable frameworks were constructed using the authors' method and aesthetically acceptable results were achieved. The proposed method can provide an easy way to make a stable cartilage framework regardless of the variable conditions of synchondrosis.

• 한국초지조사료학회지
• /
• 제18권1호
• /
• pp.49-54
• /
• 1998

This experiment was carried out to investigate effect of plant density on yield and quality of corn at the forage experimental field, grassland and forage division, National Livestock Research Institute, RDA, Suwon eom 1996 to 1997. The two corn hybrids, P 3352 and G 4743, were grow at plant density of 67,000; 71,000; 83,000 ; 89,000 and 95,000 plantha in 60,70 and 75-an spaced rows. At the low density, plant and ear height were decreased but ear length and weight were increased. Plant density had little effect on the tasseling date, silking date and ear ratio to total dry matter. The total dry matter yield of two hybrids was increased kom 15,294 to 18,996 in P 3352 hybrid and 15,881 to 21,386kglha in G 4743, respectively, by decreasing plant density. Plant density had little effect on the ADF(acid detergent fiber), NDF (neutral detergent fiber) and CP(crude protein) concentrations, but the quality of late maturity hybrid, G 4743, was higher than that of early maturity hybrid, P 3352. The result of this study indicate that 67,000 plantlha plant density was recommendable for machanization and maximum DM yield of corn.

• 한국초지조사료학회지
• /
• 제18권2호
• /
• pp.107-112
• /
• 1998

This experiment was carried out to investigate effects of herbicide application method on Abutilon avicennae control and corn yield at the forage experimental field, grassland and forage crop division, National Livestock Research Institute, RDA, Suwon from 1996 to 1997. The experiment was arranged in a randomized block design with three replication. The herbicide application consisted of control, 2-3 leaf stage(Dicamba), 5-6 leaf stage (Dicamba) and soil treatment(Pendimetha1in). The hybrid of corn used in this experiment was P 3352. The results obtained are summarized as follow; 1. The plant and ear height was the lowest at control. Tasseling and silking date were delayed 3-4 day at control. The length and weight of ear were the highest at Dicamba treatment in 2-3 leaf stage. 2. The herbicide injury of corn was detected slightly after 10-20 day but the injury was recovered soon. The weed control efficiency was 96.7 and 81.8% at Dicamba treatment in 2-3 and 5-6 leaf stage, respectively. 3. The fresh and dry matter yield of Dicamba treatment in 2-3 leaf stage was higher than that of control by 36%, but no significant difference was found among herbicide application method. 4. Herbicide application method had little effect on the ADF, NDF and CP contents, but the CP and IVDMD of ear were higher than that of stover. The results of this experiment indicate that the application of Dicarnba in 2-6 leaf stage of corn will remove almost all of A butilon avicennae and increase DM yield of corn.

• 한국자원식물학회지
• /
• 제19권3호
• /
• pp.401-404
• /
• 2006

In order to select the seeding machine for mechanizing cultivation of rapeseed in southern areas of Korea, three different seeding machines, ridge rotary, power tiller ridge rotary, tractor ridge rotary were used for sowing one of the high yielding rapeseed cv. Hybrid with five different seeding methods. Seeding of ridge rotary was reduced the seeding effort with 45% and yield components such as plant height, ear length, number of branches and pods, pod length and seed setting rate were higher. The seeding of ridge rotary also was showed highest seed yield. On the basis of time requirement for seeding, vegetative and yield parameters ridge rotary seeding machine was a suitable seeding machine for rapeseed cultivation at the southern area of Korea.

• 한국작물학회지
• /
• 제36권1호
• /
• pp.52-56
• /
• 1991

인산흡착력이 매우 크고 유효인산함량이 낮은 제주도 화산회토에 있어서 단옥수수 적정인산시비량을 밝히고자 1986년 제주(제주통)와 서귀포(남원통)에서 인산시비량( 0, 8, 16, 24, 32kg/10a)에 따른 단옥수수 교잡종 Golden Cross Bantam 70의 생육 및 수량을 조사한 결과를 요약하면 다음과 같다. 1. 출사일수는 무인산구에서 보다 인산 16kg/10a 이상 시용에 의하여 1～2일 단축되었다. 2. 간장, 착수고, 10a당 생간엽 수량은 두 지역간 유의한 차이가 없었고, 인산시비량이 많을수록 직선적으로 증가하였다. 3. 상품성 있는 이삭의 정균 길이 및 무게는 서귀포에서 보다 제주에서 컸었고, 인산시비량이 많을수록 큰 경향이었다. 4. 주당 또는 10a당 상품성 있는 이삭수, 10a당 이삭수량은 두 지역간 유의한 차이가 없었고, 인산시비량이 많아짐에 따라 이차곡선적인 증가를 보였다. 인산시료와 단옥수수 가격을 고려한 적정인산시비량은 약 26kg/10a로 추정되었다.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.348-348
• /
• 2017

This experiment was conducted to investigate the aspect of tiller occurrence, growth and yield of sorghum according to planting density and sowing date. The subject of this experiment is to supply basic data to inhibit non-productive tillers uneconomical and cumbersome for mechanical harvesting. Also another subject was to evaluate optimum planting density and sowing date in central district area. Total number of tillers was more in 80cm ridge than 60cm ridge and it was increased as the planting distance was wider from 15cm to 30cm on the each ridge. Ratio of effective tillers was higher in 60cm ridge than 80cm ridge and it was decreased as planting distance was wider from 15cm to 30cm. The lower the planting density, the more increased total number of tillers, whereas effective tillers were decreased as planting density was high. Average of total number of tillers of three varieties was higher in sowing date of 2 May (1st sowing date), whereas ratio of effective tillers was the highest in sowing date of 23 May (2nd sowing date). Hwanggeumchal showed the highest total number of tillers (1.2 tillers), while Moktaksusu had the lowest total number of tillers (0.8 tillers) among three varieties. There were no significant difference between planting density and days to heading and ripening date from seeding. Culm length increased as planting density was high, but ear length, grains per ear and 1000 grain weight were decreased on the other hand. The highest yield of sorghum per 10a was obtained from $60{\times}20cm$ planting density among 6 planting densities.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제48권3호
• /
• pp.149-154
• /
• 2022

Objectives: To measure tympanic bone thickness (anterior-superior, anterior-inferior, and inferior wall), external ear canal length, and tympanomandibular distance that can be useful in cases that undergo tympanic bone resection. Materials and Methods: The temporal computed tomography (CT) images of 349 patients were retrospectively evaluated. The anterior-inferior, anterior-superior, and inferior wall thicknesses; tympanomandibular distance; and external auditory canal (EAC) bone canal length were measured from the narrowest part of the canal. The shapes of the EAC in the coronal and sagittal planes were also examined. Results: The numbers of female and male patients were similar, and the mean age was 49.45±13.95 years. The anterior-superior, anterior-inferior, and inferior wall thicknesses were 1.92±0.60, 2.54±0.74, and 9.16±2.20 mm, respectively. The anterior-superior and anterior-inferior wall thicknesses and canal lengths were greater on the right side (P<0.001). All measurement values were higher in males, except right tympanomandibular distance (P<0.05). A non-significant negative correlation was found between the age of the participants and the left anterior-inferior wall and tympanomandibular distance on both sides. Intra-observer agreement was high for all measurements. We observed four main shapes in the external ear canal in the coronal plane: Type 3, Type 2, Type 1, and Type 4 in order of frequency on the right, and Type 2, Type 3, Type 1, and Type 4 on the left. In the sagittal plane, we detected three shapes: oval (74.4%), triangular (16.3%), and round (9.4%). Conclusion: The anterior wall thicknesses and tympanomandibular distance should be measured on preoperative temporal bone CT to safely perform tympanic bone anterior resection, which is required in some otological procedures, and also to prevent temporomandibular joint damage.

• 한국작물학회지
• /
• 제30권3호
• /
• pp.326-333
• /
• 1985

보통 옥수수의 배유에서 결핍되어 있는 라이신 등 필수 아미노산의 양을 증가시키기 위해 변갱 오페이크-2 유전인자를 도입하여 부여 ＃ 2와 부여 ＃ 3(가칭)의 두 합성품종을 충남대 농대에서 육성(1980)하여 이들의 두 품종이 가지고 있는 유전변이를 알고져 Hallauer와 Wright의 분석방법에 따라 알아본 결과는 다음과 같다. 우선 두 품종이 다 같이 초장, 이삭높이, 이삭의 크기, 100립중, 수량/이삭등에 있어서 우성인자효과 보다도 상가적 효과가 큼을 확인하였는데 이로 미루어 보아 이들 주요 식물 특성이 순환선발과 같은 적당한 육종방법에 의해 개량될 수 있다는 것이고 이삭당 열수나, 이삭의 직경등은 우성효과가 상가적 효과(분산)보다 커서 두 품종 모두 육종적 개량이 어려울 것이라는 것을 확인하였다.

• 농업과학연구
• /
• 제40권4호
• /
• pp.277-280
• /
• 2013

This study was carried out to compare the productivity and to evaluate the stability for the introduced sweet corn hybrids; Sunnychocolat, 7168Y and Gammiok as a check hybrids. The used materials were planted at Anseong and Daejeon by randomized block design with 3 replications on 21 April, 2013. In productivity of the used hybrid corns, plant and ear height showed comparatively stable as a 183.5 cm to 226.5 cm and 45.8 cm to 80.9 cm, respectively. In yield per 10a, number of ears was higher in Sunnychocolat than check, while Gammiok was very poor in kernel setting length and marketability. Beside, stability of the used hybrids also showed highly in the introduced hybrids than check in the ratio of ear to plant height, tolerance to environmental stress and low lodging. As results above, we thought that these introduced hybrids will be well adapted in domestic cultivation and growth habit as like other hybrid corns.

• 한국작물학회:학술대회논문집
• /
• 한국작물학회 2017년도 9th Asian Crop Science Association conference
• /
• pp.68-68
• /
• 2017

The status of corn genetic diversity in the uplands of Sarangani in Southern Philippines was investigated using 12 morphological traits subjected to multivariate statistical analyses. Information about traditional farming, post-harvest and storage practices were also elicited especially in relation to losses of traditional varieties, a phenomenon known as genetic erosion. While a handful of farmers still plant traditional corn varieties in the remotest areas, a significant number had already shifted to genetically modified corn. Furthermore, principal component analysis (PCA) reduced the 12 morphological traits into 5 principal components and identified ear length and ear weight to be major contributors to variation. Cluster Analysis, on the other hand, formed two distinct groups but failed to give information about intra-cluster variability among the 32 collected corn accessions. These results warrant that more informative morphological traits and that molecular markers will be used to obtain a better picture of genetic diversity in Sarangani upland corn. Molecular analysis is also needed to establish genetic identities of these cultivars and to detect gene introgression from GM varieties into the gene pool of farmers' corn varieties. These analyses are imperative for the conservation of traditional corn varieties before they disappear in the Sarangani uplands because of shifting priorities of upland farmers.