1.Computational & experimental study of the new type femoral stem for improvement of load transfer at the calcar in cemented hip joint prosthesis.
Myung Chul YOO ; Yong Girl RHEE ; Seung Key KIM ; Chul Woo CHUN
The Journal of the Korean Orthopaedic Association 1993;28(1):43-50
No abstract available.
Hip Joint*
;
Hip*
;
Prostheses and Implants*
2.Purification of the urease of helicobacter pylori and production of monoclonal antibody to the urease of helicobacter pylori.
Jae Im KIM ; Seung Chul BAIK ; Myung Je CHO ; Woo Kon LEE ; Kwang Ho RHEE
Journal of the Korean Society for Microbiology 1991;26(6):531-540
No abstract available.
Helicobacter pylori*
;
Helicobacter*
;
Urease*
3.Production of the monoclonal antibody and the genomic library of helicobacter pylori.
Kwang Ho RHEE ; Woo Kon LEE ; Seung Chul BAIK ; Myung Je CHO ; Hyu Jin CHOI
Journal of the Korean Society for Microbiology 1991;26(4):305-316
No abstract available.
Genomic Library*
;
Helicobacter pylori*
;
Helicobacter*
4.A radiologic evaluation of fit of noncemented prosthetic femoral stems.
Myung Chul YOO ; Yong Girl RHEE ; Young Woo KIM ; Jong Jin KIM ; Yong Jae KIM
The Journal of the Korean Orthopaedic Association 1993;28(1):1-10
No abstract available.
5.A clinical analysis of ectopic pregnancy.
Jeong Ho RHEE ; Eung Chul CHOI ; Ji Young LEE ; Yeon Jung YOON ; Shin Ae LEE ; Jong Woo KIM
Korean Journal of Obstetrics and Gynecology 1991;34(7):972-983
No abstract available.
Female
;
Pregnancy
;
Pregnancy, Ectopic*
6.Association of Shift Work with Normal-Weight Obesity in Community-Dwelling Adults
Chul Woo AHN ; Sungjae SHIN ; Seunghyun LEE ; Hye-Sun PARK ; Namki HONG ; Yumie RHEE
Endocrinology and Metabolism 2022;37(5):781-790
Background:
Shift work is associated with obesity and metabolic syndrome. However, this association in the normal-weight population remains unclear. This study aimed to investigate whether shift work is associated with normal-weight obesity (NWO).
Methods:
From the nationally representative Korea National Health and Nutrition Examination Survey (KNHANES) dataset (2008 to 2011), 3,800 full-time workers aged ≥19 years with a body mass index (BMI) ≤25 kg/m2 were analysed. We defined NWO as BMI ≤25 kg/m2 and body fat percentage ≥25% in men and ≥37% in women. Working patterns were classified into “daytime,” “other than daytime,” and “shift.” Multivariable logistic regression analysis was performed to evaluate the relationship between shift work and NWO.
Results:
Shift work was associated with higher odds of NWO than daytime work (adjusted odds ratio [aOR], 1.47; 95% confidence interval [CI], 1.04 to 2.09) and night/evening work (aOR, 1.87; 95% CI, 1.11 to 3.14) after adjustment for type of work, working hours, age, sex, BMI, 25-hydroxyvitamin D levels, homeostatic model assessment for insulin resistance, and other sociodemographic factors. In subgroup analyses, the association between shift work and NWO was more robust in those aged ≥60 years and those working ≥56 hours/week.
Conclusion
Shift work was associated with NWO in community-dwelling Korean adults, independent of age, sex, BMI, and other covariates.
7.The Speed of Eating and Functional Dyspepsia in Young Women.
Dong Hyun SINN ; Dong Hyuk SHIN ; Seong Woo LIM ; Kyung Mook KIM ; Hee Jung SON ; Jae J KIM ; Jong Chul RHEE ; Poong Lyul RHEE
Gut and Liver 2010;4(2):173-178
BACKGROUND/AIMS: Little information is available on whether the speed of eating differs between individuals with and without dyspepsia, mainly because controlled studies are usually not feasible. METHODS: A survey was applied to 89 individuals with relatively controlled eating patterns, using questionnaires that assessed eating time and functional dyspepsia (FD) based on the Rome III criteria. RESULTS: The prevalence of FD was 12% (11 of 89 participants), and 7% (6 of 89) were diagnosed with gastroesophageal reflux disease (GERD). The proportion of individuals reporting that they ate their meals rapidly was higher for those with FD than for those without FD or GERD (control) (46% vs 17%, p=0.043), as was the reported eating speed (7.1+/-1.5 vs 5.8+/-2.0 [mean+/-SD], p=0.045; visual analog scale on which a higher score indicated faster eating). However, the measured eating time did not differ significantly between FD and controls (11.0+/-2.8 vs 12.8+/-3.3 minutes, p=0.098). The proportion of individuals who ate their meals within 13 minutes was significantly higher for those with FD than for controls (91% vs 51%, p=0.020). CONCLUSIONS: The results of this study suggest that eating speed affects dyspepsia. Further studies are warranted.
Dyspepsia
;
Eating
;
Female
;
Food Habits
;
Gastroesophageal Reflux
;
Humans
;
Meals
;
Prevalence
;
Rome
;
Surveys and Questionnaires
8.Tissue Reactions of the 532 nm Flash Lamp Pumped Solid State Laser and Diode Pumped Solid State Laser on the Muscle and Skin of the Guinea Pig.
Sang Yong CHUNG ; Chung Ku RHEE ; Phil Sang CHUNG ; Bum Ku RHEE ; Seung Hoon WOO ; Se Hyung KIM ; Jin Chul AHN
Korean Journal of Otolaryngology - Head and Neck Surgery 2004;47(9):872-877
BACKGROUND AND OBJECTIVES: The efficiency of second harmonic generation at 532 nm is high when a pulsed Nd : YAG laseris used as a pump source of fundamental waves. The pulse durations of 532 nm-irradiation can be varied from 10 ns to 1000 ns by changing the pumping method. The purpose of this study was to compare the macroscopic and micropscopic changes in the muscle and skin after irradiation by 532 nm Flash lamp pumped solid state (FPSS) laser and Diode pumped solid state (DPSS) laser, whose pulse durations are 600 ns and 100 ns, respectively. MATERIALS AND METHOD: Two experiments were conducted on the muscle and skin of guinea pig. First, the guinea pig muscle and skin were irradiated by the 532 nm FPSS and DPSS lasers with various intensities and time duration. Macroscopic examinations were performed on the muscle lesions and immediate histopathologic examinations on the skin were carried out. RESULTS: The volume of vaporization and necrosis of the guinea pig muscle by the FPSS laser was larger than that by the DPSS laser. The vaporization and necrosis reaction of skin by the FPSS was significantly stronger than that by the DPSS laser. CONCLUSION: It appears that the DPSS laser system would be superior over the FPSS laser system in providing more accurate and precise surgery with less intense injury on the surrounding tissue.
Animals
;
Guinea Pigs*
;
Guinea*
;
Necrosis
;
Skin*
;
Volatilization
9.Cortical Magnetic Resonance Imaging Findings in Patients With Posttraumatic Olfactory Dysfunction: Comparison According to the Interval Between Trauma and Evaluation.
Sang Wook KIM ; Dae Woo KIM ; Yoo Jeong YIM ; Chae Seo RHEE ; Chul Hee LEE ; Jeong Whun KIM
Clinical and Experimental Otorhinolaryngology 2014;7(3):188-192
OBJECTIVES: Patients with smell loss after craniocerebral trauma are known to have some brain abnormalities, but there was no study to analyze the findings according to the time interval between injury and evaluation. We aimed to identify whether the time interval may influence on the findings in the brain. METHODS: Medical records of 19 patients with posttraumatic olfactory dysfunction were reviewed. All of them underwent a magnetic resonance imaging and olfactory function tests. The patients were divided into early (n=10) and delayed (n=9) groups according to the time interval. RESULTS: Magnetic resonance imaging was taken at a mean time of 2.2 and 59.6 months after trauma in the early and delayed groups, respectively. Abnormal findings in the brain were found in 6 and 8 patients in the early and delayed groups, respectively. The olfactory bulb and orbitofrontal cortex were commonly affected olfactory pathways in both groups. In the early group, the abnormalities were brain tissue defect, hemorrhage, and focal edema whereas tissue defect was the only finding in the delayed group. In the early group, 5 of 6 patients with severe olfactory dysfunction showed brain abnormality while 1 of 4 patients with mild dysfunction had abnormality. In the delayed group, all the patients had severe dysfunction and 8 of 9 patients showed brain abnormality. CONCLUSION: Most patients with traumatic olfactory dysfunction had abnormality in the brain, and brain abnormality might be different according to the timing of evaluation. Furthermore, there might be an association between the severity of olfactory dysfunction and radiological abnormalities.
Brain
;
Craniocerebral Trauma
;
Edema
;
Hemorrhage
;
Humans
;
Magnetic Resonance Imaging*
;
Medical Records
;
Olfactory Bulb
;
Olfactory Pathways
;
Smell
10.Effect of Saline-Filled or Viscous Lidocaine-Filled Cuff on the Laser-Induced Polyvinyl Chloride Endotracheal Tube Fires and Tidal Volume.
Ka Young RHEE ; Hea Jo YOON ; Jae Hyun BAHK ; Sang Chul LEE ; Chong Sung KIM ; Byung Moon HAM ; Kwang Woo KIM
Korean Journal of Anesthesiology 1999;36(2):293-297
BACKGROUND: There have been a lot of methods that prevent catatrophic airway fires during laser surgery, but none of them can protect endotracheal tube cuff exposed directly to laser beam. This study was performed to know the preventive effect of viscous lidocaine-filled cuffs on laser-induced combustion, and to know how long we can maintain positive pressure ventilation if laser beam broke out cuff perforation. METHODS: Transparent acrylic trachea attached to artificaial lung was intubated with 8.0 ID polyvinylchloride endotracheal tube. Cuff was filled with 8ml of saline or saline and viscous lidocaine mixture with 2:1 or 4:1 ratio. Positive pressure ventilation with air in tidal volume of 500 ml was begun. The laser output was set to 10 watt/sec in the continuous mode with beam diameter of 1 mm. Laser beam was directed perpendicularly at the part of the cuff protruding between endotracheal tube shaft and acrylic trachea, and laser emission was continued until the cuff was perforated or combusted. RESULTS: There was no case of laser-induced fires. After the perforation of cuff, the tidal volume was slowly decreased in 2:1 mixture of saline and viscous lidocaine filled cuff compared to others (P<0.05). CONCLUSION: 2:1 mixture of saline and viscous lidocaine may be used as an efficient inflating material of endotracheal tube cuffs on laser airway surgery.
Fires*
;
Laser Therapy
;
Lidocaine
;
Lung
;
Polyvinyl Chloride*
;
Polyvinyls*
;
Positive-Pressure Respiration
;
Tidal Volume*
;
Trachea