This research was performed to develop mass propagation method of Alpine modest primrose (Primula modesta var. hannasanensis T.Yamaz.) for improving the conservation and utilization of the species. Seeds were collected on August 2011 in Jeju-city and well-selected seeds were dry-stored at $4{\pm}1.0^{\circ}C$. Seed size ranged $0.44{\pm}0.07{\times}0.61{\pm}0.04mm$, and weight of 1,000 seeds was $51.78{\pm}0.021mg$. Thus the seed was classified as 'dwarf seeds'. As the result of dormancy characteristics, moisture content of freshly matured seeds increased rapidly by water-soaking treatment and seeds did not germinate at $20^{\circ}C$ for 4 weeks under the light condition. Therefore, seeds were estimated to have physiological dormancy. Germination conditions of dry-stored seeds were found to be $20^{\circ}C$ and light condition, and seeds did not germinated under dark condition regardless of all temperature regimes. Therefore, Alpine modest primrose seed was considered as photoblastic type. Percent germination (PG) and germination energy (GE) were greatly improved by soaking the seeds in $GA_3$ and kinetin for 24 hours. Especially, 200~500 mg/L $GA_3$ treatment resulted in the highest PG (95.5%) and GE (98.3%). So, chemical treatment such as $GA_3$ was thought to be a useful method for raising seedling uniformly.
Objective: To aid the development of a frontal image simulating program, we evaluated the soft tissue frontal changes in relationship to movement of hard tissue with orthognathic surgery of facial asymmetry patients. Methods: Preoperative and postoperative frontal cephalograms and frontal view photographs of 45 mandibular surgery patients with facial asymmetry were obtained in a standardized manner. Vertical and horizontal changes of hard tissue and soft tissue were measured from cephalograms and photographs, respectively. Soft tissue change in result to hard tissue change was then analyzed. Results: Both vertical and horizontal correlation analysis showed a weak relationship between the changes. Hard tissue points that were picked for 1 : 1 mean ratio with soft tissue points did not show any significant relevance. For each soft tissue change, regressive equation was formulated by stepwise multiple regression analysis, and the equation for soft tissue Menton was most reliable in predicting changes. Both vertical and horizontal hard tissue changes were used together in prediction of vertical or horizontal soft tissue change. Conclusions: The results suggest that computerized image simulation using regression analysis may be of help for prediction of soft tissue change, while 1:1 mean ratio method is not useful.
Journal of the Institute of Electronics Engineers of Korea SC
/
v.46
no.6
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pp.44-49
/
2009
EAS (electronic article surveillance) systems have increased rapidly for article surveillance. In this paper, the strength of the EMF (electromagnetic fields) of EAS systems were measured. Pacemaker and ICD were investigated for inappropriate response resulting from EM (electromagnetic) EAS systems. The strength of EMF and the response of pacemaker and ICD were measured in the inner left side, outer right sides and the center of gates of the 6.3 kHz and 14.25 kHz EAS systems at a height of 130cm. As the result, EMF of the EAS system using 14.25 kHz was stronger than that of 6.3 kHz. AU interferences were observed only for 14.25 kHz, and the noisy ECG was found in three static positions on the pacemaker. The ICD resulted in noise reversion and VF (ventricular fibrillation) both static and moving positions by the EMP of 14.25 kHz EAS system. Therefore, it is necessary to post a message warning radiation of EMF from every EAS systems and possible risk of pacemakers and ICDs.
Journal of the Institute of Electronics Engineers of Korea SC
/
v.48
no.4
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pp.1-9
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2011
Hemorrhagic shock is a clinically widespread syndrome characterized by inadequate oxygenation and supply. It is important to diagnose hemorrhagic shock in its early stage for improving treatment effects and survival rate. However, an accurate diagnosis and treatment could be delayed in the early stage of hemorrhagic shock by evaluating only vital signs such as heart rate and blood pressure. There have been many studies for the early diagnosis of hemorrhagic shock, reporting that lactate concentration and perfusion were useful variables for tissue hypoxia and metabolic acidosis. In this study, we measured both perfusion using a laser Doppler flowmeter and lactate concentration from the volume controlled hemorrhagic shock using rats. We also proposed a new shock index which was calculated by dividing lactate concentration by perfusion for early diagnosis. As a result of the survival prediction by the proposed index with the receiver operating characteristic curve method, the sensitivity, specificity, and accuracy of survival were 90.0, 96.7 and 94.0%, respectively. The proposed index showed the fastest significant difference among the other parameters such as blood pressure and heart rate. It could offer early diagnosis and effective treatment for human hemorrhagic shock if it is applicable to humans.
Cellular glass foam (CGF), the reprocessed glass, has a possibility to be used as a medium component in plug culture of horticultural crops due to the its excellent air and water permeability as comparable to perlite. An experiment was conducted to investigate growth of plug seedlings of Lycopersicum esculentum 'Segye' as influenced by irrigation frequency in various medium combinations of CGF (2.0-4.0 mm particle size) and peatmoss. Seeds were sown in 200-cell plug trays, filled with mixtures of CGF and peatmoss either at 33:67 or 25:75 (%. v/v) and were germinated on a fogged propagation bed. The irrigation frequencies used were one, two or three times per every two days. A commercial plug medium (Tosilee medium) was used as the control, and the irrigation frequency in the control was one time per day. Growth of seedlings, and medium pH and EC were measured at 33 days after sowing. The medium composition had little influence on overall growth of seedlings. Irrigation frequency very significant affected number of leaves, leaf area, chlorophyll concentration, fresh and dry weights of shoots and roots, and dry matter. Growth of seedlings was the greatest with the highest irrigation frequency in the 25% CGF+75% peatmoss mixture.
The purpose of the present study was to evaluate the relationship between the amount of cuspal deflection and linear polymerization shrinkage in resin composite and polyacid modified resin composite, For cuspal defelction and shrinkage measurement, Dyract AP, Compoglass F, Z100, Surefil. Pyramid, Synergy Compact, Heliomolar and Heliomolar HB were used. For measuring polymerization shrinkage, a custom made linometer (R&B, Daejon, Korea) was used The amount of shrinkage among materials was compared using One-way ANOVA analysis and Tukey's test at the $95\%$ of confidence level For measuring cuspal deflection of teeth, standardized MOD cavities were prepared in extracted maxillary premolars. After a self-etching adhesive was applied, cavities were bulk filled with one of the felling materials. Fifteen teeth were used for each material. Cuspal deflection was measured by a custom made cuspal-deflection measuring device. One-way ANOVA analysis and Tukey's test were used to determine differences between the materials at the $95\%$ of confidence level, Correlation of polymerization shrinkage and cuspal deflection were analyzed by regression analysis. The amount of polymerization shrinkage from least to greatest was Heliomolar, Surefil < Heliomolar HB < Z100, Synergy Compact < Dyract AP < Pyramid, Compoglass F (p<0.05). The amount of cuspal deflection from least to greatest was Z100, Heliomolar, Heliomolar HB, Synergy Compact Surefil < Compoglass F < Pyramid, Dyract AP (p < 0.05). The amount of polymerization shrinkage and cuspal deflection showed a correlation (p<0.001).
Hyunsu Choi;Leonard Sunwoo;Se Jin Cho;Sung Hyun Baik;Yun Jung Bae;Byung Se Choi;Cheolkyu Jung;Jae Hyoung Kim
Korean Journal of Radiology
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v.24
no.5
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pp.454-464
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2023
Objective: We aimed to investigate current expectations and clinical adoption of artificial intelligence (AI) software among neuroradiologists in Korea. Materials and Methods: In April 2022, a 30-item online survey was conducted by neuroradiologists from the Korean Society of Neuroradiology (KSNR) to assess current user experiences, perceptions, attitudes, and future expectations regarding AI for neuro-applications. Respondents with experience in AI software were further investigated in terms of the number and type of software used, period of use, clinical usefulness, and future scope. Results were compared between respondents with and without experience with AI software through multivariable logistic regression and mediation analyses. Results: The survey was completed by 73 respondents, accounting for 21.9% (73/334) of the KSNR members; 72.6% (53/73) were familiar with AI and 58.9% (43/73) had used AI software, with approximately 86% (37/43) using 1-3 AI software programs and 51.2% (22/43) having up to one year of experience with AI software. Among AI software types, brain volumetry software was the most common (62.8% [27/43]). Although 52.1% (38/73) assumed that AI is currently useful in practice, 86.3% (63/73) expected it to be useful for clinical practice within 10 years. The main expected benefits were reducing the time spent on repetitive tasks (91.8% [67/73]) and improving reading accuracy and reducing errors (72.6% [53/73]). Those who experienced AI software were more familiar with AI (adjusted odds ratio, 7.1 [95% confidence interval, 1.81-27.81]; P = 0.005). More than half of the respondents with AI software experience (55.8% [24/43]) agreed that AI should be included in training curriculums, while almost all (95.3% [41/43]) believed that radiologists should coordinate to improve its performance. Conclusion: A majority of respondents experienced AI software and showed a proactive attitude toward adopting AI in clinical practice, suggesting that AI should be incorporated into training and active participation in AI development should be encouraged.
Shim, Tae Sun;Lee, Eun Gae;Choi, Chang Min;Hong, Sang-Bum;Oh, Yeon-Mok;Lim, Chae-Man;Lee, Sang Do;Koh, Younsuck;Kim, Woo Sung;Kim, Dong Soon;Cho, Sang-Nae;Kim, Won Dong
Tuberculosis and Respiratory Diseases
/
v.65
no.3
/
pp.177-182
/
2008
Background: Isoniazid (INH, H) is a key drug of the standard first-line regimen for the treatment of tuberculosis (TB), yet some reports have suggested that treatment efficacy was maintained even though INH was omitted from the treatment regimen. Methods: One hundred forty C57BL/6 mice were infected with the H37Rv strain of M. tuberculosis with using a Glas-Col aerosol generation device, and this resulted in depositing about 100 bacilli in the lung. Four weeks after infection, anti-TB treatment was initiated with varying regimens for 4-8 weeks; Group 1: no treatment (control), Group 2 (4HREZ): 4 weeks of INH, rifampicin (R), pyrazinamide (Z) and ethambutol (E), Group 3: 1HREZ/3REZ, Group 4: 4REZ, Group 5: 4HREZ/4HRE, Group 6: 1HREZ/3REZ/4RE, and Group 7: 4REZ/4RE. The lungs and spleens were harvested at several time points until 28 weeks after infection, and the colony-forming unit (CFU) counts were determined. Results: The CFU counts increased steadily after infection in the control group. In the 4-week treatment groups (Group 2-4), even though the culture was negative at treatment completion, the bacilli grew again at the 12-week and 20-week time points after completion of treatment. In the 8-week treatment groups (Groups 5-7), the bacilli did not grow in the lung at 4 weeks after treatment initiation and thereafter. In the spleens of Group 7 in which INH was omitted from the treatment regimen, the culture was negative at 4-weeks after treatment initiation and thereafter. However, in Groups 5 and 6 in which INH was taken continuously or intermittently, the bacilli grew in the spleen at some time points after completion of treatment. Conclusion: TThe exclusion of INH from the standard first-line regimen did not affect the treatment outcome in a murine model of TB in the early stage of disease. Further studies using a murine model of chronic TB are necessary to clarify the role of INH in the standard first-line regimen for treating TB.
Han Sung-Suk;Kim Yong-Soon;Um Young-Rhan;Ahn Sung-Hee
The Journal of Korean Academic Society of Nursing Education
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v.5
no.2
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pp.376-387
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1999
Purpose : To provide fundamental data to present further direction of education on Nursing Ethics by investigating the status of Nursing Ethics education performed at 4-year-Colleges of Nursing. Korea. Methods : A descriptive survey study The data collected from 28 universities through a questionnaire to examine the status of Nursing Ethics education in Korea. Results : I. Teaching Nursing Ethics class as a independent subject-6(21.4%) universities. 1) The average of 23.67 hours(2 credits) in the total educational hours. 2) Teaching method-theoretical class, discussion of case study, discussion of related issues, presentation of video tapes and discussion, team education, role play, and submission of reports. 3) Education contents-Nursing profession and ethics, the dignity of human life, necessity of bioethics, ethical theory and refutation, code for nurses, ethical issues between nurses and patients, nurses and co-workers, and nurses and nurses 6 universities 4) 5 universities-Included ethical decision making, artificial insemination, external insemination, artificial abortion, organ transplantation, brain death, human subject of study suicide, and euthanasia. II. Teaching Nursing Ethics as an inclusive theme in other subjects-22 (78.57%) universities. 1) Educated in Introduction of Nursing (14 universities), Nursing Management, Nursing Ethics and Philosophy, Special Nursing, Nursing and Law, and Professional Nursing. 2) Educational course-Taught in freshman level at 14 universities, average 9.32 education hours. Conclusion: Showed not only that universities, not operating Nursing Ethics as a independent class, unreasonably operate and assign too many contents in comparing with its education hours and are likely to become only a cramming education but also professors whose major is not Nursing Ethics presently in charge need to take a chance to supplement their knowledge and teaching method.
As home care in developing and becoming part of the health care delivery system in Korea, it is necessary to examine the use of nursing diagnoses and related nursing interventions with a view to increasing the standardization of nursing recording. This study was done to examine the nursing diagnosis and related nursing interventions used in home care. Data were collected using a chart review of the nursing notes written for the home care given to 38 patients who had pulmonary diseases or traumatic brain or spinal cord injuries and who had received home care as part of a demonstration home care project in a college of Nursing in Seoul. Early on in the project discussions as to format and use to nursing diagnosis was done and a tool was developed based on Gordon's eleven functional catergories with the addition of categories to cover family and environment. This tool was used in the data collection. Data included nursing diagnosis, etiologies and interventions. Real numbers and percentages were used in the analysis. The results show that the most frequently used diagnoses were in the category of physical function (75.6%), followed by the category of emotional and social function (21.8%). The least frequently used category was the one for family and environment (2.6%). The order of the frequency of recorded nursing interventions was the same, 82.3% for physical function, 16.2% of emotional and social function and 1.5% for family and environment. Under the category of physical functioning the most frequently used nursing diagnoses were related to mobility (62.2%), nutrition (23.6%) and elimination (11.9%). The frequencies of nursing interventions for these three diagnostic categories were 69.8%, 16.0% and 10.8% respectively. For emotional and social functioning, the most frequently used diagnoses were for cognition-perception (37.1%), self-perception (30.6%) and perception of health (23.7%). The ordering of the frequency of nursing interventions varied slightly. The most frequently used interventions were for the category of self-perception (31.7%) followed by cognition-perception (24.1%) and perception of health (22.9%). Looking at individual diagnoses, it was found that within the categroy of physical functioning, the most frequently used diagnosis was "impaired physical mobility" (29.5%) and this diagnosis involved 43.9% of the interventions. This was followed by "ineffective breathing pattern" (19.4%) with 17.7% of interventions, and "alteration in nutrition, less than body requirements" (11.2%) with 8.1% of the interventions. For the emotional social category, noncompliance was the most frequently used nursing diagnosis (18.2%) with 19.2% of the interventions. This was followed by "anxiety" (13.4%) with 13.6% of the interventions and by "knowledge deficit" (13.4%) but with only 5.5% of the interventions. The other diagnoses and interventions did not follow this pattern of frequency. Although there were a large number of diagnostic and intervention events, the number of actual diagnoses and interventions used were relatively small ranging from six interventions for "knowledge deficit" to 40 interventions for "imparied physical mobility". From this it can be concluded that the results of this study could be used as basic data for the development of standardized charts with respect to nursing diagnosis and interventions for clients with pulmonary disease and clients with traumatic brain or spinal cord injuries. Interventions that were direct care activities (1178) were much more frequent that education (430), and assessment and observation (148). There were also few diagnoses or interventions related to the family and the environment. This suggests two areas that need to be developed in home care and that need to be considered in the development of standardized records for use in home care.
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