• Journal of the Korean Arthroscopy Society
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• v.16 no.1
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• pp.9-16
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• 2012

Purpose: Tibial plateau fractures cause a variety of problems in the knee joint. The purpose of this study was to investigate the characteristics of the meniscus injuries in tibial plateau fracture arthroscopically. Materials and Methods: Thirty-three out of 39 consecutive patients diagnosed with tibial plateau fractures underwent arthroscopy between March 2007 and March 2010. According to Schatzker classification, there were 1 type I (3.3%), 19 type II (53.3%), 4 type III (13.3%), 2 type IV (6.6%), 2 type V (6.6%) and 5 type VI (20%) fracture patterns in 33 patients. Results: Twenty-five cases (75.8%) had lateral meniscus tears. There were 18 meniscal tears in 19 cases of Schatzker type II fractures (94.7%), 3 meniscal tears out of 4 cases of Schatzker type III fractures (75%) and 4 meniscal tears out of 5 cases of Schatzker type VI fractures (80%). The most commonly affected site (22/25) was the anterior horn of the lateral meniscus. Of the 25 documented meniscal tears, all but one were vertical longitudinal tear at meniscocapsular junction so most cases are amenable to arthroscopic repair. Conclusion: Arthroscopy for the meniscal injuries in tibial plateau fractures is a valuable diagnostic and treatment tool, we recommend arthroscopy in tibial plateau fracture.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.9
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• pp.32-38
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• 2020

Cargo train braking uses the pressure changes in the air braking pipe to operate the braking tightening and releasing service repeatedly. Air-braking release failure means partial braking caused by a failure of the variable load valve after the driver handling the brake release. This phenomenon causes wheel flaws while driving a wagon, resulting in wheel breakage or train derailment. This study developed the air-braking release failure proof valve considering the technical requirements of the railway operation corporations. In addition, a durability test of the valve was carried out using a braking performance simulator, and its operating performance was evaluated from the pneumatic history under cyclic braking conditions. The warranty life of this valve was assessed by performing 160,000 cycles of testing of 12 prototypes in accordance with the zero-failure test method, considering the number of braking cycles while driving the wagon. During the durability test, the pneumatic input time, output time, and release velocity were almost constant. The warranty life of this valve was 59,860 times the 95% confidence level, which means that it can be operated without trouble for four years when the valve is installed in the bogie of the wagon.

• Korean Journal of Food Science and Technology
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• v.44 no.2
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• pp.235-239
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• 2012

This research was conducted to monitor ochratoxin A in wine, beer, $makgeolli$ and fermented alcoholic beverages to estimate the exposure to ochratoxin A in the assorted alcoholic beverages. The analytical method for ochratoxin A was based on immuno-affinity column clean up followed by HPLC-FLD. Ochratoxin A was detected in 30 samples of 177 wine (17%), 25 samples of 106 beer (23.6%), 11 samples of 74 $makgeolli$ (14.9%), and 7 samples of 74 fermented alcoholic beverages (9.5%). The average levels of ochratoxin A were 0.039 ng/mL in wine, 0.010 ng/mL in beer, 0.023 ng/mL in $makgeolli$, and 0.014 ng/mL in fermented alcoholic beverages. The daily dietary exposure level of ochratoxin A estimated by using the report on national health and nutrition survey were 0.039 ng/b.w.day from wine, 0.010 ng/b.w.day from beer, 0.023 ng/b.w.day from $makgeolli$, and 0.014 ng/b.w.day from fermented alcoholic beverage.

• Journal of Bio-Environment Control
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• v.14 no.4
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• pp.280-283
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• 2005

The growth and yield of ever-bearing strawberry $(Fragaria{\times}ananassa\; Duch.)$ 'Pechika' were compared after transplant treatment in the raised hydroponic culture on highlands in summer season. The transplant production methods compared were whole plant refrigerated, outdoor over-wintered, pot-refrigerated, and 1 -year-old transplants. Growth increment at planting was the highest in pot-refrigerated transplants. C/N ratio of the pot-refrigerated transplants was 39.2 which was higher than 19.5 of 1-year-old transplants. However, the growth increment up to the first harvest were not different among the treatments. The first harvesting date of 1-year-old transplants was August 14, which was 5-9 days late than in the other treatments. The average fruit weight was highest in the 1-year-old transplants with 12.6 g. Marketable yield was the highest in the pot-refrigerated transplants, followed 1-year-old, plant refrigerated, and outdoor over-wintered transplants. Therefore, the pot-refrigerated transplants are recommended for marketable yield increase in ever-bearing strawberry cultured on highlands.

• Korean Journal of Food Science and Technology
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• v.43 no.6
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• pp.675-682
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• 2011

This study was conducted to monitor the concentrations of 24 anti-impotence drugs and their analogues in various foods and dietary supplements, with the aim of ensuring the safety of the foods and supplements. The measurements were done in 226 samples using high performance liquid chromatography/photodiode array detector (HPLC/PDA) and liquid chromatography-electrospray ionization tandem mass spectrometry (LC-ESI-MS/MS). Five male sexual function enhancing products have been detected as follows: acethylvardenafil (21,476 mg/kg; 15 mg/capsule from one sample), sildenafil (52,778 mg/kg, 29 mg/capsule in one sample; 71,535 mg/kg, 48 mg/capsule in one sample), and tadalafil (9,772-55,545 mg/kg, 6-33 mg/capsule in four samples). A sustainable monitoring of anti-impotence drugs and their analogues in various foods and dietary supplement is recommended.

• Applied Chemistry for Engineering
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• v.9 no.4
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• pp.529-535
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• 1998

This study was made to investigate the effect of variation in pulping process conditions such as wastepaper blending treatments, temperature, and chemical blending treatments on the deinked pulp. Design of experiments was used to select the major factors which significantly influenced on the deinked pulp. As one of the statistical analysis technique, analysis of variance and multiple comparison technique was used to find the best process condition and the predicted values and confidence intervals for brightness and strength were obtained. In the condition of $Na_2SiO_3$ 2.0%, $H_2O_2$ 0.5% and wastepaper blending treatments (KONP : AONP : OMG = 40 : 30 : 30 wt %) the highest brightness of 50.5% was predicted with 90% confidence interval (49.0, 52.0). On a concentration of $H_2O_2$ 0.5%, the highest tensile index of $35.7N{\cdot}m/g$ was predicted with 90% confidence interval (34.6, 36.6) at the pulping temperature of $50^{\circ}C$. On a concentration of surfactant 0.1%, the highest burst index of $0.129kPa{\cdot}m^2/g$ was predicted with 90% confidence interval (0.125, 0.133) at the pulping temperature of $50^{\circ}C$.

• Journal of Bio-Environment Control
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• v.29 no.3
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• pp.252-258
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• 2020

The aim of this study was to investigate the effects of timing of collecting date and concentration of IBA and NAA, in order to enhance initial activity and seedling quality of domestic strawberry. Strawberry cuttings were separately taken twice, in June 7 and in July 5, and IBA and NAA were treated with the concentrations of 0.025, 0.05 and 0.1% at cutting date, respectively. The seedlings were evaluated for the percentage of survival during 18 days at 6 times after tunnel cultivation. The NAA treatment was inappropriate for strawberry cutting due to the high rate of seedling mortality, regardless of the collecting date. The vitality of the seedlings was highest at IBA 0.1% in June collecting and at IBA 0.05% in July collecting. The seedlings from June collecting had a higher quantum yield at IBA 0.1% and the seedlings from July collecting at IBA 0.05%. Therefore, IBA could be more effectively applied than NAA to promote the vitality and quality with the appropriate concentration of 0.1% at June collecting and 0.05% at July collecting, respectively.

• Journal of the Korean Data and Information Science Society
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• v.27 no.4
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• pp.865-874
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• 2016

This study was carried out to investigate the effect of dietary addition of herbal probiotics on the Hanwoo steers' physiochemical property. A total of 50 Hanwoo steers (5 treatment groups${\times}$10 heads) were used. The crude fat content of beef has been found significant high in T2 and T3 group, and the Con 2 group had the highest heating loss (p<0.05). The water-holding capacity ranged from 56.73% through 60.16%, and the treatment group was generally higher than the control group. In particular, the T3 group showed significantly high water-holding capacity (p<0.05). The cholesterol content ranged from 41.64mg/100g through 47.33mg/100g. In the overall and the Con 2 group had significantly high cholesterol content (p<0.05). Furthermore, the oleic acid and MUFA had significant high T2 and T3 group in the fatty acid composition (p<0.05), but the amino acid content made no difference between the treatment groups.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.5
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• pp.608-615
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• 2017

The objective of this study was to evaluate the physicochemical, structural, and rheological properties of new domestic potato cultivars ('Goun', 'Sebong', and 'Jinsun') against the foreign potato cultivar 'Atlantic'. Based on the results obtained from scanning electron micrograph, X-ray, and Fourier transform infrared spectrum analyses, the structural properties of all potato flours were not considerably different. Rapid visco analyzer analyses showed that the setback viscosities of 'Goun', 'Sebong', and 'Jinsun' were significantly lower than that of 'Atlantic'. For steady shear rheological properties, potato flour dispersions showed shear-thinning behaviors (n=0.45~0.49) at $25^{\circ}C$. Apparent viscosity and consistency index of 'Atlantic' were similar to those of 'Sebong' and 'Jinsun'. For dynamic shear rheological properties, storage modulus (G′) and loss modulus increased, whereas complex viscosity (${\eta}^*$) was reduced with increasing frequency from 0.63 to 62.8 rad/s. G′ and ${\eta}^*$ values of 'Jinsun' were significantly higher than those of the other potato cultivars.

• Korean Journal of Agricultural Science
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• v.39 no.4
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• pp.497-502
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• 2012

Since the year 2000, the production and consumption of broccoli have rapidly increased in Korea. And, the average production area and amount were about 1,700 ha and 29,000 ton for the past 5 years. Even with the increase of these cultivation and consumption, more than 95% of the broccoli seeds are currently imported from foreign countries such as Japan and Netherlands. Therefore, development of domestic broccoli varieties is needed to relieve Korean farmers' production cost for broccoli. In this situation, National Institute of Horticultural and Herbal Science (NIHHS) of Korea has tried to develop F1 hybrid varieties from elite lines that were obtained by microspore cultivation method from 2008. As the results, about 850 lines of broccoli were obtained and self-pollinated. Then their ploidy levels of the genome were confirmed to select double haploid (D.H.) lines. And the D.H. lines' horticultural traits were evaluated in open field. After the selection of 17 elite D.H. lines, they were cross-pollinated with a male sterile (MS) line to produce F1 hybrid seeds. After 2 to 3 years field trials of these F1 hybrid varieties at the area of Suwon, Gangneung, and Jeju respectively, two hybrid varieties such as 'Wongyo8011' and 'Wongyo8012' are selected for the application of variety protection. With these 4 years of research, we found that the microspore cultivation method is a powerful tool for the conventional breeding program, especially for the development of various inbred lines and even F1 hybrid varieties in short time.