• Journal of Korean Society of Forest Science
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• v.32 no.1
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• pp.73-86
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• 1976

Two individuals ($sp_1$, $sp_2$) of purple and one individual ($sd_1$) of red hearted flower were selected from 18 years old Hibiscus syriacus trees obtained from the seeds treated with colchicine, and their morphological and physiological characteristics were investigated and following results were obtained. 1. The somatic chromosome number of the selected individuals, $sp_1$, $sp_2$, and $sd_1$ were 2n=160, while that of the check tree was 2n=80, indicating that the selected individuals, $sp_1$, $sp_2$ and $sd_1$ were tetraploid. 2. Peroxidase isoenzyme bands of high activity in selected individuals, $sp_1$, $sd_1$ and check tree were mostly in cathode, fixed band was f and v bands, and frequency of each band and their activity were not different between selected individuals, $sp_1$ and $sd_1$ and check tree. 3. The flowers of $sp_1$ individual were large in size and more dark purple than check tree's. The flowers of $sp_2$ individual were not increased in size, but they were dark purple and red heart at the base of the petal was expanded to 2/3 of the petal length. The flower of $sd_1$ individual was also large and some of the red lines from the petal base were extended to 2/3 of the petal length, which was much longer than those of the check tree. 4. Thickess of leaves, length of guard cells, diameter of pollens, wood fiber lengths and woody fiber widths were all increased in $sp_1$, $sp_2$ and $sd_1$ as compared to those of the check tree. 5. Survival percentage of cuttings was 80% with $sp_1$ and 36% with $sd_1$, and their growth performance were inferior to control in their second growing season.

• Journal of the Korean Institute of Traditional Landscape Architecture
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• v.34 no.3
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• pp.124-139
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• 2016

This study was carried out to characterize 127 recently developed cultivars of Rose of Sharon (Hibiscus spp.) in Korea and foreign Countries for landscape uses. The examined factors were growth characteristics such as tree height of a 1-year grafted plant(cm), plant type, growth habit, leaf characteristics such as shape and size, flower characteristics such as color, shape, size, and red eye during 2014 and 2015 for landscape uses. The results are obtained as follows; In the results of flower color of the 127 recently developed cultivars, pink color with red eye spot, white color with red eye spot, purplish red color with red eye spot, violet purple color with red eye spot, crimson color with red eye spot, asadal, blue color with red eye spot, and white color were distributed. In the flower characteristics, Hibiscus hybrid 'Daewangchun' had the largest flower size of 16.0cm out of the 127 cultivars. H. syriacus 'Antong', 'Lil Kim', and 'Ggoma' were cultivars with smaller flowers than other cultivars. H. syriacus 'Hunjang' had largest red eye, of 5.2cm of length compared to the other cultivars. The cultivars with unique flower color for landscape uses are H. syriacus 'Kwangmyung', 'Nanpa', 'North face', 'Bulsae', 'Bidan', 'Songam', 'Youngchang', 'Jukpeoso', 'Kiho', 'Tamla', 'Hwasoored' and 'Hwanhee'. These flowers had a purplish red color and were developed in Korea. H. syriacus 'Aphrodite', 'Dr. Uemoto', 'Freedom', 'Pink Cup', 'PS 80-1', 'Purpureus Variegatus', 'Red Giant', 'Woodbridge' also had unique flowers with a purplish red color and were introduced from foreign countries. In addition, cultivars with violet pink flowers were H. syriacus 'Ggoma', 'Doturak', 'Myungmi', 'Byunghwa', 'Sancheonyu', 'Taehwa', 'Hikari-hanagasa', and 'Little Kim Violet'. 'Jongmoo' and 'Ruffled Satin' had flowers with crimson color. Therefore, the new cultivars with unique flower colors were a promising cultivars to a woody landscape plant. Cultivars with large flower sizes were Hibiscus hybrid 'Daewangchun', Hibiscus hybrid 'Daemang', and Hibiscus hybrid 'Jina'. H. syriacus 'Ggoma', 'Mibeak', 'Antong', 'Lil Kim', and 'Eunhasu' had small flower sizes. Cultivars with long red eye were H. syriacus 'Hunjang' and H. syriacus 'Hi Lea Red'. Therefore, the new cultivars, Hibiscus hybrid 'Daewangchun', Hibiscus hybrid 'Daemang', Hibiscus hybrid 'Jina' with large flower sizes, H. syriacus 'Ggoma', 'Mibeak', 'Antong', 'Lil Kim', and 'Eunhasu' with small flower sizes, H. syriacus 'Hunjang' and H. syriacus 'Hi Lea Red' with long red eye, were promising cultivars to a woody landscape plant.

• Horticultural Science & Technology
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• v.28 no.4
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• pp.711-714
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• 2010

A new cultivar 'Daemang' ($Hibiscus$ hybrid 'Daemang') originated from the interspecific cross between $Hibiscus$ $sinosyriacus$ 'Seobong' and $Hibiscus$ $syriacus$ 'Namwon' to improve the flower quality in 2001. 'Daemang' was preliminarily selected as 'R-143' in 2003 for its stable flower quality with long red eye spot and named in 2006. The tree habit shows vigorous growth and is upright, so it can be used as a specimen tree or street tree. Characteristic tests such as leaf shape, leaf size, flower characteristics, flowering, and capsule size were conducted from 2004 to 2006. The characteristics succeed after grafting. 'Daemang' had pink color flower with red eye spot. The width of flower is 15.2 cm. Petal length and width are 8.0 cm and 6.4 cm, respectively. Leaves are 9.49 cm long and 8.72 cm wide. After the plant characteristics evaluation for 3 years (2004~2006), it was registered as a variety 'Daemang' in 2008.

• Journal of Chest Surgery
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• v.37 no.6
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• pp.539-542
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• 2004

Not only morphology of pulmonary artery or pulmonary artery resistance, but major aortopulmonary collateral arteries are risk factors of Fontan procedure. We report a successful Fontan procedure after rehabilitation of pulmonary arteries by unifocalization and systemic to pulmonary shunt in a high risk Fontan candidate with functional single ventricle combined with hypoplastic pulmonary arteries and major aortopulmonary collateral arteries supplying most of the bilateral lung field.

• Electrical & Electronic Materials
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• v.6 no.5
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• pp.407-416
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• 1993

무산소동을 안정화 모재로한 Cu/Nb-Ti 빌렛트를 제작한 다음 간접 열간방식의 압출에 의해 얻어진 봉재를 인발한 후 신선과 열처리를 반복하여 단심 및 다심 Nb-Ti 초전도 선재를 제조하였다. 가공 조직을 조사한 결과, 단심 선재의 경우 Nb-Ti 심의 단면이 균일하게 가공된 것을 확인하였으며 다심선재의 경우는 신선가공에 의하여 다소 불균질한 필라멘트부분이 관찰되었다. 4.2K, 자장하에서 4단자법으로 직선형 단척시료의 임계전류를 측정하여 가공 열처리 조건에 따른 임계전류밀도의 자장특성을 조사하였는데 열처리시간을 길게하고 가공도를 높인 시료일수록 자장하의 임계전류밀도가 높게 나타나는 것을 확인하였다. 4.2K, 5T 자장하에서 각각 4 x $10^{5}$A/$cm^{2}$ 및 2 x $10^{5}$A/$cm^{2}$의 임계전류밀도를 나타내는 Nb-Ti 단심 및 다심 초전도선재를 제작 할 수 있었다.있었다.

• Proceedings of the Optical Society of Korea Conference
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• 2003.02a
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• pp.312-313
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• 2003

최근 인터넷 트래픽의 증가와 음성, 데이터, 동영상과 같은 다양한 멀티미디어 서비스의 영향으로 가입자망의 고속화가 요구되고 있다. 인터넷 트래픽을 효율적으로 가입자에게 제공하기 위해서는 광을 이용한 통신이 이루어져야 한다. 이를 위하여 다양한 기술들이 제시되고 있으며, 경제적인 측면과 구성의 용이성을 고려한 광 가입자망인 PON(Passive Optical Network)에 대한 관심이 고조되고 있다. 본 논문에서는 파장 분할 다중화 방식으로 단심 상하향 동일파장을 사용하여 소요되는 광섬유의 비용을 반으로 줄이고, 채널당 전송용량을 두 배로 높일 수 있는 매트로 이더넷용 단심 양방향 버스형 WDM-EPON 시스템에 대한 연구를 하고자 한다. (중략)

• Journal of Chest Surgery
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• v.38 no.4 s.249
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• pp.308-311
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• 2005

The status of pulmonary circulation is regarded with utmost importance for the successful Fontan operation. The absence of unilateral pulmonary artery leads to decreased pulmonary vascular bed and elevated pulmonary vascular resistance which are the risk factors for Fontan operation. A 9-year-8-month-old female patient diagnosed as tricuspid atresia, pulmonary atresia with absent left pulmonary artery flow, received extracardiac conduit Fontan operation using 18 mm Gore-Tex graft. She was discharged on twenty sixth postoperative day with arterial $O_2$ saturation of $70\%$ on room air. On last follow up at 14 months after the operation, she was clinically well with $O_2$ saturation of $91\%$.

• Journal of Chest Surgery
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• v.35 no.12
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• pp.862-870
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• 2002

The surgical results of the patients with single ventricle(SV) associated with total anomalous pulmonary venous connection(TAPVC) has been reported with high mortality and morbidity due to their morphologic and hemodynamic complexity. A retrospective review was undertaken to report the outcome of the first-stage palliative surgery in our institution and to determine the factors influencing early death. Material and Method: Between January 1987 and June 2002, 39 patients with SV and TAPVC underwent surgical intervention with or without TAPVC repair. Age at operation ranged from 1day to 10.7months (median age, 2.4month), and 29 patients were male. Preoperative diagnosis included 20 right-dominant SV, 15 SV with endocardial cushion defect, 3 left-dominant SV, and 1 tricuspid atresia. The pulmonary venous connection was supracardiac in 22, cardiac in 5, infracardiac in 11, and mixed in 1, Obstructed TAPVC was present in 11. First-stage palliative surgery was performed in 37. Repair of TAPVC, either alone or in association with other procedures, was performed during the initial operation in 31. Univariate and multivariate analyses were performed to analyze the risk factors influencing the operative death. Result: A mean follow-up period of survivors was 34.3 $\pm$ 43.0(0.53 ~ 146.2)months. Overall early operative mortality was 43.6%(17/39). The causes were low cardiac output in 8, failure of weaning from cardiopulmonary bypass in 3, sepsis in 2, pulmonary hypertensive crisis in 1, pulmonary edema in 1, pneumonia in 1, and postoperative arrhythmia in 1. Risk factors influencing early death in univariate analysis were body weight, surgical intervention in neonate, obstructive TAPVC, preoperative conditions including metabolic acidosis, and need for inotropic support, TAPVC repair in initial operation, operative time, and cardiopulmonary bypass(CPB) time. In multivariable analysis, body weight, age at initial operation, surgical intervention in neonate, preoperative conditions including metabolic acidosis, need for inotropic support and CPB time were the risk factors. Conclusion: In this study, we demonstrated that the patients with SV and TAPVC had high perioperative mortality. Preoperative poor condition, young age, the length of operative and CPB time, the presence of obstructive TAPVC had been proven to be the risk factors. This fact suggests that the avoidance of unnecessarily additional procedures may improve the surgical outcomes of the first-stage palliative surgery. However further observation and collection of the data is mandatory to determine the ideal surgical strategy.

• Journal of Chest Surgery
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• v.34 no.10
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• pp.781-783
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• 2001

In a patient with single ventricle associated with complex systemic and/or pulmonary venous drainage, intraatrial Fontan procedure is sometimes technically difficult due to the complex spatial relationship between their orifices in the atrium. We report a case of the modified extracardiac conduit Fontan procedure in a patient with a single ventricle in which the inferior vena cava and the hepatic vein drained separately into the atrium and the intraatrial orifice of the hepatic vein was abut to the orifice of the left lower pulmonary vein.

• FLOWER RESEARCH JOURNAL
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• v.19 no.1
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• pp.55-63
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• 2011

This study was carried out to develop new cultivars of Hibiscus species from crosses between introduced interspecific hybrids and cultivars in Hibiscus species. Fruit setting of interspecific crosses of Hibiscus strains was less than 10% and the number of seeds in the fruit was also in low level. Three individuals of specific flower and leaf characteristics were selected from crosses between introduced interspecific hybrid, 'Fujimusme'(♀), and H. syriacus 'Namwon'(♂) in 2004. A new strain, Hibiscus ${\times}$ 'W-26', was selected from the crossing of interspecific hybrid, 'Fujimusme'(♀), and H. syriacus 'Namwon'(♂), which had white flower and narrow separated petal. Hibiscus ${\times}$ 'WRB-2' was selected from the crossing of interspecific hybrid, 'Fujimusme'(♀), and H. syriacus 'Namwon'(♂), which had white flower and blue eye spot. Hibiscus ${\times}$ 'R-141' was selected from crosses between introduced interspecific hybrid, 'Shichisai'(♀) and H. syriacus 'Namwon'(♂), which had large flowers over 13 cm diameter and revealed tall tree type. Hibiscus ${\times}$ 'R-142' was selected from the crossing of interspecific hybrid, 'Shichisai'(♀), and H. syriacus 'Namwon'(♂), which had large flowers over 13 cm diameter and revealed tall tree type. The characteristics were succeded after grafting. Flower of 'R-142' had reddish violet color with red eye spot, whereas its parent had blue and purple flowers.