• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.2
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• pp.123-133
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• 1992

This study was conducted to clarify progressed changes of plant types and the effects of the physiological and ecological components on improving ideotype of winter wheat. 12 wheat varieties were planted at the experimental farm of Wheat and Barley Research Institute in Suwon in 1990. As results of intensive wheat breeding for early maturity since 1959, heading, flowering and maturing dates have been shortened by 17, 15 and 14 dagys, respectively. The shortened days from sowing to heading and from heading to flowering contributed to the early maturity to improved. Physiological factors associated with heading time of wheat could be reprsented by growth habit, photoperiod responses, earliness in narrow sense and winter hardiness. For improving an early maturity of winter wheat, it would desired to maintain some degree of winter habit(III-IV), and recombination of more insensitivity to short day length and more shortened earliness in narrow sense than that of Saemil and Chugoku 81, and higher degree of winter hardiness. For improving the early maturity the more effective way must be of shortened days from sowing to heading, and days from flowering to maturity than days from heading to flowering. Ideotype of wheat will be desired to recombine two semi-dwarf genes with erect plant type being about 70-80cm, less stem elongation by late spring, long spike and many grains per spikelet. Average spike weight ratio was about 45-49% in high-yielding varieties, stem fresh weight was lighter, but spike fresh weight was heavier in new one while leaf fresh weight was similar to each other during the maturing periods. Average spike dry weight ratio was higher about 40～48%, and stem and leaf blade dry weights were lower in the newly bred varieties. Stem dry weight was heavier than spike or leaf dry weight in the old varieties of Yungkwang, Jangwang and Jinkwang. Leaf area index for the varieties showed normal distribution curve as the maximum point in booting stage. The maximum point of this curve come in early maturing wheat, and late in old one. The maximum points of LAI were 6.4～6.8 in the high-yielding varieties. Totals of LAI in each period investigated of old one were higher than those of newly bred being 24.6～28.8. Chlorophyll content of the high-yielding varieties of Chokwang, Geurumil and Saemil as higher than that of the old varieties Jangkwang, Jinkwang, Wonkwang and Sinkwang from regrowing period to April 21. after then slightly and even after heading. Net assimilation rate (NAR) was higher in high-yielding varieties with good plant type, and lower in old ones. Grain yield of the newly released varieties increased rapidly but slowly in the old ones. Change in water content of grain at the growing stage in newly bred was lower than that of the old bred. Diminishing rate of water content of grain in establishment per day was 1.2% average that of the old varieties including Yungkwang was 1.5%, and those of the newly bred including Chokwang were 0.9～1.1%. Chokwang, Naemil, and Saemil were the highest-yielding varieties of the Korean cultivars. Yields were increased by spikes per m$^2$, grain weight for the varieties bred in Suwon, and by spikes per m$^2$ for the varieties bred in Milyang.

• Journal of Chest Surgery
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• v.36 no.6
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• pp.391-396
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• 2003

Background: Recently transilluminated powered phlebectomy was introduced and used as a method of surgical treatment for varicose vein in lower extremities. The advantage of transilluminated powered phlebectomy are minimal scar and good cosmetic effect. However, the disadvantages of transilluminated powered phlebectomy is that a high priced Trivex system must be used which increases the patient's expenses. Therefore, we performed a transilluminated powered phlebectomy using an existing arthroscopic equipment instead of Trivex system and observed the effect of treatment and efficiency of the treatment. Material and Method: From March, 2000 to February, 2003, 78 patients (113 limbs) underwent transilluminated powered phlebectomy with an arthroscopic equipment. Patient's disease history, the number of operative scars and complications were reviewed. Result: The operation was performed in 133 limbs of the 78 patients (34 men, 44 women) and the age of patients were ranged from 16 to 72 years with mean age of 41.8 years. Operative time ranged from 20 to 65 minutes (average 48.7 minutes) per limb. The number of operative scar per limb from 2 to 7 (average 4.9). Postoperative complications are transient ecchymosis (78 cases) that desappeared spontaneously, edema persisting longer than 3 weeks (6 cases), remnant varicose vein (4 cases), skin perforation during operative procedure (2 cases), and contact dermatitis due to compression stocking (4 cases) The mean hospitalization day was 3.09 days. Subjective mean satisfaction degree of operation by the patients using a visual analogue scale was 92.6%. Conclusion: Our findings demonstrated that transilluminated powered phleectomy using arthroscopic equipment was possible and had good cosmetic results with acceptable complications.

• Journal of Ginseng Research
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• v.25 no.3
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• pp.112-117
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• 2001

International index of erectile function (IIEF) has a high sensitivity and specificity for the evaluating treatment of erectile dysfunction. IIEF was used to evaluate on an international level the effectiveness of red ginseng on patients with erectile dysfunction and determine its possible development as a natural drug. 50 patients with erectile failure who were 20 years or older and without organic cause were randomly divided into two groups. Group 1(25 patients) received red ginseng 600mg three times a day and group 2 (25 patients) received placebo in the same fashion for 8 weeks. Each group was evaluated with IIEF at the start and end of therapy. Of the 50 patients 47 (group 1 24, group 2 23) who completed the 8 week therapy were evaluated. The mean age and symptom duration of the patients was 45.7$\pm$8.7 (27-68) and 6.2$\pm$5.6(1-29) years, respectively. Patient age, symptom duration. marriage status, marriage duration, partner age were not statistic significance between the two groups (p>0.05). Blood chemistry, urinalysis, and hormonal assay did not reveal difference between the two groups. primary efficacy (erectile rigidity and its maintenance) and all domains in secondary efficacy were significantly better after therapy in group 1 compared to those of group 2 (p<0.05) except for frequency of sexual desire, degree of sexual desire, and frequency of intercourse trial (p>0.05). Group 1 patients were significantly more satisfied after treatment compared to group 2 patients with 58.3% (14/24)and 26.1%(6/23) satisfaction rates, respectively. There were no adverse reactions or complications with ginseng adiminstration. Further study into the effects of saponin and ginsenoside that are the main substances in ginseng for erectile dysfunction is needed. In addition, its possible additive effect with ginseng and sildenafil should be elucidated in the future.

• Journal of Korean Society for Atmospheric Environment
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• v.30 no.4
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• pp.378-386
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• 2014

The use of bus stop in the center lane has reduced the emissions of exhaust gas on the road due to the improvement of the traffic speed but has caused a health problem for the citizens who are waiting for the bus in the platform, and thus the air pollution control of bus stop in the center lane is emerging as a more important part. This study was conducted to investigate the air pollution degree for the center lane-bus stops in four regions using mobile air measuring vehicle, and to evaluate the characteristics of air pollution by comparing with the data measured at the urban air monitoring site close to the bus stops. In addition, the correlation analysis was performed to analyze the impact to neighboring region by vehicle exhaust gas. The regional mean concentration of nitrogen dioxide in the center lane-bus stops ranged from 0.025 to 0.043 ppm which shows from 2.5 times to 5.3 times higher than the values of urban air monitoring site selected as a control group. The regional mean concentration of ozone in the center lane-bus stops ranged from 0.023 to 0.034 ppm which shows from 3% to 28% lower than the values of urban air monitoring site selected as a control group. The concentrations of nitrogen dioxide and ozone for the sampling regions did not exceed one hour-air quality environmental standard (0.1 ppm). The mean concentration of particulate matter for four center lane-bus stops was $28{\mu}g/m^3$ which shows about 27% higher than the values of urban air monitoring site selected as a control group, and that of particulate matter did not exceed one day-air quality environmental standard ($100{\mu}g/m^3$). In the results of correlation analysis between data from center lane-bus stops and data from urban air monitoring sites, the correlation coefficient (r) of nitrogen dioxide was relatively low as 0.316 to 0.416, and the correlation coefficient was high as the distance was close and vice versa. However, the correlation coefficient of ozone ranged from 0.167 to 0.658 and the correlation coefficient was high as the distance was far and vice versa.

• Quality Improvement in Health Care
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• v.7 no.1
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• pp.32-45
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• 2000

Background : Critical pathway is an optional sequencing and timing of interventions by physicians, nurses, and other staff for a particular diagnosis or procedure, designed to minimize delays and resource utilization, and to maximize quality of care; abbreviated versions of case management plans that show critical outcome and key incidents that occur in a predictable and timely fashion to achieve an appropriate length of stay. This study is to develop a critical pathway for vaginal delivery and cesarean section to assess the degree of contentment of the patients and medical personnel and to implement clinical application to see how we could meet the need to guide patients to achieve continuum of care. Method : Critical pathways were developed for normal vaginal delivery and casarean section. LOS(length of stay) target for vaginal delivery was 1 day after delivery & 5 days after C-section. It was distributed to the mother at the OPD and explained thoroughly. It was applied when patients got into the Labor & Delivery Floor. We applied total of 42 patients (30 normal deliveries & 12 C-sections) from February to March, 2000. We performed patient satisfaction survey to all 42 patients, 24 nurses, and 7 residents for internal customer satisfaction. Results : Twenty six patients out of 42 responded to the survey. Twenty one patients out of 26 answered satisfactory. Eighty four percent of 21 respondents replied Critical pathway worked very well. Treatment column got the most compliance. Eleven out of 31 employees thought critical pathway is very helpful for the patient care. Eighteen people didn't see any difference. In their opinion, treatment got the least compliance, which is the contrary to patients opinion. Fifty eight percent of respondents thought that critical pathway can expedite early discharge. Conclusion : Patient satisfaction was higher than we expected but we still need to revise the form. It is recommended to analyze the cost and variance check in the future.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.33 no.5
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• pp.375-384
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• 2011

Purpose: The advent of microsurgical technique and instruments, particularly in the field of perforator flap and supermicrosurgery, which have expanded the scope of microsurgery. However, supermicroanastomosis without any compression, tension, or distortions must be achieved to reach successful outcomes. Small-caliber vessels, such as those with an internal diameter less than 0.2 mm, are susceptible to inadvertent twisting of the anastomosis. In this study, using the superficial inferior epigastric artery (SIEA)-based flap model in Sprague-Dawley (SD) rats, we evaluated the acceptable limits of twisting effects on supermicroanastomotic sites. Methods: A total of 20 supermicroanastomoses were performed using the SIEA-based flap model in 10 male SD rats, 10-weeks-of-age, weighing 300~350 g. Rats were divided into five groups of two with four flaps as follows: 1) sham, 2) control group with end to end SIEA arterial supermicroanastomosis, 3) experimental I (EA1) with $90^{\circ}$ twisting, 4) experimental II (EA2) with $180^{\circ}$ twisting, and 5) experimental III (EA3) with $270^{\circ}$ twisting of the supermicroanastomosis. Each SIEA was anastomosed using six 11-0 $Ethilon^{(R)}$ (Ethicon Inc. Co., NJ, USA) stitches except in the sham group where the SIEA was only clamped with Supermicro vascular $clamps^{(R)}$ (S&T, Neuhausen, Switzerland) for 20 minutes. Results: The anastomosed arterial patency showed no remarkable changes according to doppler waveforms measured with a Smardop 45 Doppler System (Hadeco Inc., Kawasaki, Japan). The pulsatility index (PI) was increased at postoperative day 10 in the EA2 and EA3 groups, and the resistance index (RI) showed no statistically significant difference between preoperative and postoperative values at 10 days. Histologic specimens from the EA3 group showed increased tunica media necrosis, convolution of the internal elastic lamina, densely packed platelets, fibrin, and erythrocytes. Flap viability and anastomosed vessel patency were not significantly affected by the degree of arterial twisting in this study, other than in the EA3 group where minor effects on arterial patency of the microanastomoses were encountered. Conclusion: It appears that minor twisting on small caliber arteries, used in supermicroanastomoses, can be tolerated. However, twisting should be avoided as much as possible, and more than $180^{\circ}$ twisting must be prevented in clinical practice.

• Journal of Digital Convergence
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• v.10 no.3
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• pp.241-250
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• 2012

Low birth rate is a persisting national challenge that causes a decrease in productive population and an increase in encumbrances by ever rising insurance premiums, eventually threatening the existence of the country. This study investigated the effectiveness of the current government's undergoing economic support of the child-birth promotion policy, "go-un-mam card", and suggested improvement plans about the problems derived on the basis of the perceptions of the card users. Multi-response analysis was used to find out the preference of the policy, and chi-square test was conducted to discover the user satisfaction rate and intent of re-parturition. Also, descriptive analysis was performed to identify the degree of the policy recognition. The results illustrated that a significant association exists between the satisfaction rate and the intention of re-parturition. In addition, pregnant women gained information about the policy from governmental agencies and medical institution as well as by word of mouth; then, applied to the policy. Also, the card users only took an advantage of discounts in the hospitals within the supported monetary amounts. Moreover, the card users expressed their dissatisfaction at the monetary amounts. For instance, the users were dissatisfied with the limit on the amount to be used in a day and requested upgrade on the monetary amounts. Based on the result, the government will improve and develop the go-un-mam card for the ultimate purpose of policy, increasing birth-rate.

• Korean Journal of Agricultural Science
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• v.45 no.1
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• pp.19-27
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• 2018

To study the effect of natural anti-microbial chemicals on the growth and quality of chili peppers, chitosan ($100mg/L^{-1}$), stevia ($250mg/L^{-1}$), and the mixture of both chemicals at the same concentration were sprayed after planting at 1-week interval throughout the experimental period. Plant height was measured twice after the $3^{rd}$ and $4^{th}$ applications. Plant height was numerically reduced in all chemical treatments compared to that of untreated control; however, there was no statistical difference between treatments. The fruit quality was examined at commercial maturity, and only minor differences were found in fruit color, length, and dry matter content between the treatments. Although a statistical difference was not present for soluble sugars levels, total phenolics, and capsaicin contents, yield in all chemical treatments significantly increased compared to untreated control. The effect on yield increase was greater at the late harvest season regardless of treatments. Total yield of 4 harvests was higher for the chitosan treatment than other treatments. During the experiment, the entire experimental field was waterlogged for 1 day due to sudden heavy rainfall, which resulted in the occurrence of bacterial browning disease in all treatments. The rate of disease occurrence and the degree of severity, however, were much lower in the chitosan treatment. In conclusion, the potential of chitosan as an alternative antimicrobial agent was confirmed in chili peppers in this study. Further research is required on stevia as an alternative chemical for disease control in chili peppers.

• Korean Journal of Adult Nursing
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• v.13 no.3
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• pp.373-384
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• 2001

The purpose of this study was to develop a DanJeon Breathing Exercise Program for health promotion and to examine the effects of a DanJeon Breathing Exercise Program on the physical and emotional health promotion of women in midlife. The design utilized for this study was quasi-experimental with a nonequivalent control group pretest-posttest design. This study was done between February 1 and July 4, 2000 and the subjects of the study were 40 women in midlife living in Seoul. There were 20 members in experimental group who participated in the DanJeon Breathing Exercise Program and 20 members in the control group who were chosen as matched to members of the experimental group according to age, education and religion. The DanJeon Breathing Exercise Program was carried out for 80 minutes a day, 3 times a week for 12 weeks. The percent of body fat, back strength, flexibility (trunk flexion), balance and vital capacity were measured using the Health Management System developed by the Korea Physical Science Institution. Blood tests were done at D infirmary for total cholesterol, and the atherogenic index was calculated using an established formula. The scores of anxiety and depression were measured by a questionnaire with 10 questions on anxiety and 13 questions on depression. It was developed from the Korean Manual of Symptoms-Checklist-90 revision. The collected data were processed using the SPSS PC program and analyzed using $\chi^2$-test and t-test. The result of this study are as follows : 1. The percent of body fat for the experimental group who participated in the DanJeon Breathing Exercise Program was lower than that of the control group. 2. The degree of back strength, flexibility (trunk flexion) and balance of the experimental group that participated in the DanJeon Breathing Exercise Program was higher than that of the control group. 3. The vital capacity of the experimental group that participated in the DanJeon Breathing Exercise Program was higher than that of the control group. 4. The total cholesterol level and atherogenic index of the experimental group that participated in the DanJeon Breathing Exercise Program were lower than those of the control group. 5. The scores for anxiety and depression in the experimental group that participated in the DanJeon Breathing Exercise Program were lower than those of the control group. In conclusion, DanJeon Breathing Exercise Program promotes the physical and emotional health of women in midlife. The DanJeon Breathing Exercise Program can be utilized as a nursing intervention for the promotion of health in women in midlife.

• Journal of the Korea Convergence Society
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• v.8 no.12
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• pp.129-137
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• 2017

The purpose of the study is to investigate the convergence influence of excessive smartphone use on attention deficit, learning environment, and academic procrastination in health college students. A self-reported questionnaire was completed by 255 college students in Busan drom March 6 to June 12, 2017. The degree of smartphone overuse, lack of attention, learning environment, and academic procrastination according to smartphone use characteristics showed significant effects on the time spent on smartphones per day, awareness of smartphone addiction, and personal use of smartphones during class time (p<0.001). It was shown that smartphone overuse was positively correlated with attention deficit (r=0.870, p<0.01), learning environment (r=0.812, p<0.01), academic procrastination (r=0.772, p<0.01), and attention deficit showed a positive relationship with learning environment (r=0.918, p<0.01) and academic procrastination (r=0.798, p<0.01) Learning environment was positively correlated with academic procrastination (r=0.777, p<0.01). The influence factors of smartphone overuse were attention deficit (p<0.001), followed by academic delay behavior (p<0.01). It is necessary to establish a healthy learning environment through prevention and proper use of smartphone.