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Translocation and Distribution of Photosynthetic Assimilates in Watermelon and Tomato
Sang-Gyu Lee,Kwan-Dal Ko,Chiwon William Lee 한국원예학회 2006 Horticulture, Environment, and Biotechnology Vol.47 No.4
The patterns of translocation and distribution of C¹⁴ labeled photo-assimilates in watermelon and tomato grown in the greenhouse and field were characterized. Each of the mature leaves of the plants at the time of active fruit development stage was exposed to ¹⁴CO₂ (20 μCi) for 40 min and the leaves, stems, fruits, and roots were harvested 3, 6, 9, or 12 h after treatment. One half of the plants were grown under natural light and the other half in the dark during the experimental period. The activity of C¹⁴ in the dry tissues of leaves, stems, fruits, and roots were determined, using a liquid scintillation analyzer. Both watermelon and tomato plants grown in the greenhouse and field contained C¹⁴ in all types of tissues 3 h after treatment, regardless of exposure to light or dark during the experiment. Watermelon and tomato, respectively, transferred 22 to 61% and 9 to 26% C¹⁴ from the source leaves in 3 h. Fruit tissues served as the strongest sink, with the highest percentages of Cl4 transfer in watermelon (99%) and tomato (90%) in plants grown in the field. The rate of C¹⁴ translocation was highest when plants were kept in the dark after ¹⁴CO₂ feeding. In general, total translocation of C¹⁴labeled compound from the source leaf was higher in watermelon than in tomato plants. For both watermelon and tomato, most field-grown plants showed a higher rate of C¹⁴ translocation as compared to greenhouse grown plants for a given period of time.
Ko, Chang-Nam,Park, Seong-Uk,Chang, Gyu-Tae,Jung, Woo-Sang,Moon, Sang-Kwan,Park, Jung-Mi,Cho, Ki-Ho The Korean Society of Ginseng 2011 Journal of Ginseng Research Vol.35 No.2
The mixture of Ginseng Radix and Crataegi Fructus (Gen-CF) was developed to increase the pharmacological effect of ginseng in the treatment of hypercholesterolemia and prevention of cardiovascular disease. This study evaluated the effects of Gen-CF on serum lipids of hypercholesterolemic rats in vivo, as well as its antioxidant activities in vitro, and explored its clinical effects on patients with hypercholesterolemia. In vitro, Gen-CF displayed 1,1-diphenyl-2-picrylhydrasyl and superoxide radical scavenging activities, and inhibited hemolysis induced by 2,2'-azobis-2-amidinopropane dihydrochloride in a dose-dependent manner. In vivo, Gen-CF significantly inhibited the increases of total cholesterol, low-density lipoprotein cholesterol and triglyceride in high cholesterol-diet and Triton WR-1339 models. It also significantly inhibited the decrease of high-density lipoprotein cholesterol in these models. In the clinical trial, Gen-CF significantly lowered total cholesterol, low-density lipoprotein cholesterol, triglyceride, total lipid and phospholipid, with no adverse events, including hepatic or renal toxicity. The data suggest that Gen-CF has the potential to treat hypercholesterolemia and prevent cardiovascular disease.
Sang-Wook Lee(이상욱),Myung-Rae Cho(조명래),Byoung-Kwan Lee(이병관),Sang-Bong Ko(고상봉),Dong-Kyu Shin(신동규),Koing-Woo Kwon(권굉우) 대한정형외과학회 2004 대한정형외과학회지 Vol.39 No.5
목적: 대퇴 경부 골절 환자에서 수술시 고정을 위해 사용하는 유관 나사를 이용하여 향후 대퇴 골두 골 괴사의 예측 방법에 대하여 조사하였다. 대상 및 방법: 1999년 3월부터 2001년 2월까지 44명을 대상으로 최소 25개월 이상 추시 관찰하였으며, 평균 나이는 51세(18-76세)였다. 근위부에 삽입된 유관 나사의 두부에 있는 관으로부터 출혈 유무를 관찰하였는데, 출혈군은 38예, 비 출혈군은 6예였다. 추시에서 대퇴 골두 골 괴사는 단순 방사선 사진으로 판독하였다. 두 군에서 유관나사 부위의 출혈 유무와 무혈성 괴사의 발생 관계에 있어 민감성, 정확성, 양성 예측도, 음성 예측도를 조사하였다. 결과: 대퇴 골두 골 괴사는 7예(16%)에서 발생하였다. 출혈군은 38예 중 1예(2.6%), 비 출혈군은 6예 모두에서 대퇴 골두골 괴사가 발생하였다. 비 출혈군과 골두 골 괴사의 관계에서는 민감도 86%, 정확도 100%, 양성 예측도 100%, 음성 예측도가 97%였다. 결론: 대퇴 경부 골절 환자에서 추후 발생할 수 있는 대퇴 골두 골 괴사에 대한 예측 방법으로 수술 중 유관 나사의 두부관 출혈 유무가 단순하면서 유용한 방법으로 판단된다. Purpose: The aim of this study was to examine the validity of using cannulated screws as a method for predicting avascular necrosis of the femoral head after a fixation of fractures in patients with femoral neck fractures. Materials and Methods: Between March 1999 and January 2001, 44 patients with a femoral neck fracture that had been fixed with cannulated screws were enrolled in this study. The follow up period was more than 25 months and the mean age of the patients was 51 years (range, 18 to 76 year). Blood drainage in the holes of the screw head was checked. There were 38 cases in the bleeding group, and 6 cases in the non-bleeding group. The development of head necrosis was evaluated using plain radiography. The validity of the relationship between the two groups and head necrosis was evaluated by the sensitivity, specificity, the positive predictive value, and the negative predictive value. Results: An avascular necrosis of the femoral head developed in 7 cases (16%). Only one of the 38 patients in the bleeding group developed head necrosis (2.6%). However, all those in the non-bleeding group developed head necrosis (100%). The sensitivity was 86%, the specificity was 100%, the positive predictive value was 100%, and the negative predictive value was 97%. Conclusion: Bleeding from holes in the cannulated screws is a simple and accurate perfusion assessment for predicting the development of an avascular necrosis of the femoral head after a femoral neck fracture.
Ko Min-Jung,Chae Sang-Yeup,Lee Seungeun,Lee Dongmin,Song Jaeho,Park Jinkyung,Kim Jung-Hyun,Goo Bonhyuk,Park Yeon-Cheol,Seo Byung-Kwan,Baek Yong-Hyeon,Nam Sang-Soo 대한침구의학회 2023 대한침구의학회지 Vol.40 No.3
Background: The incidence of facial palsy has been increasing. Many patients consult both Korean and Western physicians; however, no critical pathway (CP) for facial palsy has been established based on integrated medicine including Korean medicine, Western medicine, and complementary and alternative medicine. Thus, we developed and implemented an integrated CP for patients with acute facial palsy and investigated the satisfaction with CP. Methods: Overall, 20 patients who received treatment following the CP and 20 medical staff members involved in their care responded to a questionnaire survey. The questionnaire was developed based on a review of previous studies and focused on the satisfaction with the CP. Results: Patients’ satisfaction score with the integrated CP was ≥ 4.4 for all items using a 5-point Likert-type scale. Smooth and cooperative treatment procedures, time-saving practices, and a clear explanation of the integrated treatment plan were satisfactory factors. Additionally, they preferred incorporating specialized facial massage and receiving education on self-exercise or massage techniques as complementary therapies. The medical staff members expressed a high level of satisfaction with the CP; however, the work division and treatment guidelines must be improved. Conclusion: An integrated CP program for acute facial palsy was implemented, and the satisfaction levels of patients and medical staff members were assessed. The results revealed high levels of satisfaction, and several improvements identified will be incorporated into clinical practice going forward.
Sang-Gyu Lee,Kwan-Dal Ko,Chiwon W. Lee 한국원예학회 2005 Horticulture, Environment, and Biotechnology Vol.46 No.5
The patterns of C¹⁴ carbohydrate translocation and distribution from the source leaf to various plant parts in watermelon grown in the greenhouse and field were investigated. Seedling-grown plants were pruned to two branches with one carrying a fruit. When leaves at four different positions (on fruit-bearing node, on the 5th node above and below the fruit-bearing node, and on the 5th node from the base of the non-fruit-bearing stem) were exposed to ¹⁴CO₂, the distribution of C¹⁴ compounds to different parts (fruit, stem, leaf, and root) of the plant varied. In all treatments, the fruit was the strongest sink, followed by the stem, leaf, and root. The highest percentage of C¹⁴ photoassimilates was translocated out of the source when the leaf born on the fruit-bearing node was exposed to ¹⁴CO₂ in both greenhouse- and field-grown plants. Translocation of C¹⁴ compounds from the leaves on the 5th node or above and below the first fruit-carrying node was similar. Only 29% of C¹⁴ was translocated from the source leaf born on the 5th node of the non-fruit bearing branch in the greenhouse, as compared to more than 46% of the C¹⁴ from other source leaves. Accumulation of C¹⁴ in the root tissues was greatest when source leaves were born on the non-fruit bearing branch. In general, field-grown plants had a larger proportion of the C¹⁴ translocated as compared to greenhouse-grown plants.