• The Journal of the Korean Society for Microbiology
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• v.21 no.3
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• pp.363-373
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• 1986

We developed a giant colony test system with rapidly growing mycobacteria by stab-culture with a loopful inoculum of cells into Middlebrook 7H10 agar medium containing soluble extracts of the fruits of Gardenia jasminoides(7H10-crocin agar medium) and assessed the significance of the giant colony test with 28 strains of 10 clusters of rapidly growing mycobacteria classified by the simple biological 5-test characters. Of the 10 clusters of mycobacteria tested, some of strains which belonged to cluster No. 1a, 5a and 11a did grow as gravis types, whereas most of other clusters gave mitis or intermedius types in their colonial sizes at 12 days culture. By this test, pathogenic strains of M. fortuitum-chelonei complex which belonged to cluster No. 5a, b, 7a and 8a, b could be divided into gravis, intermedius and mitis colony types and the gravis ones were characterized by bluish-white "mushroom-shaped" colonies with central complexes in the texture, whereas the intermedius gave grayish-white "flower-shaped" colonies with radiated folds, but without any central complexes. The mitis colonies were characterized by grayish-white smooth or smooth mucoid colonies and were common among the clusters in their shapes. The colony of M. chelonei was bluish-white mitis type and was characterized by its hilly rhizoid colony. The gravis colony of cluster No. 1a identified as M. phlei was characterized by yellow "round straw- mat-shaped" or "chrysanthemum-shaped" colony with whole complexes in the texture, and the gravis colonies of the cluster No. 11a gave grayish-white "flower-shaped" colonies with central stamens, radiating trough and fine cup-shaped strands in the texture. The four colony types of pathogenic species of M. fortuitum-chelonei complex on 7H10-crocin agar medium were distinctive from those of other clusters of rapidly growing mycobacteria and these results indicated that the giant colony test, in conjunction with the simple 5-test characters, would be of value in the differentiation of M. fortuitum complex from other clusters of rapidly growing mycobacteria.

• The Transactions of the Korea Information Processing Society
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• v.3 no.2
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• pp.295-304
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• 1996

Toprovide economical BISDN service, with which integration process of many types of media is possible, it is necessary to construct a system with ground network and satellite network combined. The method for this type of transmission using satellite is TDMA that can provide services to many users in various area. However, the most difficult task to connect TDMA which uses synchronous method to ATM which used asynchronous transfer mode is the deterioration n of ATM transmission quality such as cell delay variation. Therefore, it is necessary to develop delay variation compensation method which can confront to the ATM. Efficient ways to use satellite links under the conditions such that maximum efficiency of the delay variation is limited under the required value, and the burst characteristic of transmission cell does not increase are being researched for translation between in ATM and TDMA. This paper points out the problems when time stamp method, reviewd in ground network, is applied to the satellite links to compensate the delay variation .To solve the problem, discrete cell count method is introduced along with the calculation of transmission capacity and error rate.Also, from the observation of stab-ility of the system and verification of reliability even when singal error occurred in the cell transmission timing information, the proposed compensation method appeared to be excellent.

• Journal of Chest Surgery
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• v.29 no.10
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• pp.1123-1128
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• 1996

A clinical study was performed on 152 cases of surgical esophageal disease treated by the Department of Thoracic & Cardiovascular Surgery of Korea University Hospital from Jan. 1989 through July 1994. The most common esophageal disease was cancer which was seen in 73 cases (48%) among 152 cases. All were treated surgically' 52 patients (71%) were managed by curative or palliative resection with reconstruction and feeding gastrostomy or jejunostomy, otherwise Celestine tube insertion was performed on the remaining 21 patients for palliatio'n. Esophageal leiomyoma occurred in 6 cases(3.9%), among them 1 case was performed with trio recoscopic enucleation . Achalasia were in 7 cases (4.6%) and was treated with modified Heller's m otomy and with Belsey Mark IV operation. Diverticulum were in 11 cases (7.2%). Esophageal stricture occurred in 20 cases (14.1 %) and 17 of 20 cases were managed with bypass surgery. Esophageal perforation was seen in 20 cases, its cause was instrumental trauma in 7 cases, stab wound in 4 cases, foreign body in 4 cases, spontaneous perforation in 3 cases, and others 1 case Other disease including congenital lesion was seen In 1 Scases.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.454-461
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• 2017

The purpose of this study is to investigate the types of domestic safety accidents involving children and to verify the difference of safety knowledge according to variables of parents. Subjects include 226 parents who have 3-5 year old infants enrolled in kindergartens and day care centers in I-city, Jeollabuk-do. The study tools are modified and complemented questionnaire for the study purpose referred to the preceding research data and the literature. For the processing of collected data, frequency analysis, descriptive statistics, one-way ANOVA, and the Duncan post-test were utilized using the SPSS program. The results of this study are as follows: First, safety accidents occurred at the majority of homes which have infant children. On average, the occurrence frequency was 1.78 times per six months. The accidents involving infants occurred in the order of drop or slip, crash or impact, stricture or jamming, fall, stab or cut, burn, swallow or inhalation. Second, both parents had an average level of safety knowledge. There was a distinction in the areas of 'fall' and 'first aid' according the mother's age. In addition, stay-at-home mothers had the higher level of safety knowledge compared with working mothers in the areas of 'general safety knowledge' and 'fire'. There was a distinction in the area of 'fire' according to the father's age. Given these findings, safety training programs for parents to improve safety knowledge needs to be developed.

• Journal of Trauma and Injury
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• v.25 no.4
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• pp.217-222
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• 2012

Purpose: Diaphragmatic rupture following trauma is often an associated and missed injury. This report is about our experience with treating traumatic diaphragmatic rupture (TDR). Methods: From January 2007 to September 2012, 18 patients who had a diaphragmatic rupture due to blunt trauma or penetrating injury underwent an operation for diaphragmatic rupture at our hospital. We retrospectively reviewed their medical records, including demographic factors, initial vital signs, associated injuries, interval between trauma and diagnosis, injured side of the diaphragm, diagnostic tools, surgical method or approaches, operative time, herniated organs, complications, and mortality. Results: The average age of the patients was 43 years, and 16 patients were male. Causes of trauma included motor vehicle crashes (n=7), falls (n=7), and stab wounds (n=5). The TDR was right-sided in 6 patients and left-sided in 12. The diagnosis was made by using a chest X-ray (n=3), and thorax or upper abdominal computed tomography (n=15). Ten(10) patients were diagnosed within 12 hours. A thoracotomy was performed in 8 patients, a video-assisted thoracoscopic surgery in 4 patients, a laparotomy in 3 patients, and a sternotomy in one patient. Herniated organs were the omentum (n=11), stomach (n=8), spleen and colon (n=6), and liver (n=6). Eighteen diaphragmatic injuries were repaired primarily. Seven patients underwent ventilator care, and two of them had pneumonia and acute respiratory distress syndrome. There were no operative mortalities. Conclusion: Early diagnosis and surgical treatment determine the successful management of TDR with or without the herniation of abdominal organs. The surgical approach to TDR is chosen based on accompanying organ injuries and the injured side.

• Journal of dental hygiene science
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• v.15 no.6
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• pp.845-850
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• 2015

The purpose of this study was to examine the actual state of injuries experience and safety accident prevention in dental hygienists. This study surveyed the actual state of injuries experience caused by apparatus and materials through a self-administered survey of 366 dental hygienists. Statistical analysis was performed using PASW Statistics 18.0. Frequency, chi-square test, t-test, one-way ANOVA were applied in this analysis. The results were as follows: Out of the 307 subjects (83.9%) experienced injuries in the last 6 months, and 294 subjects (80.3%) chose the stab as the most frequent type of injuries experience and it was followed by incised wound, scratch and burn. In relation to the differences in injuries experience depending on general characteristics, there were significant differences depending on the age, career, position, dental treatment (p<0.001) and the education (p<0.01). In relation to the differences in the level of safety accident prevention practice depending on general characteristics, there were significant differences depending on the injuries experience, age (p<0.05) and the types of dental clinics (p<0.01). Therefore, We suggest to establish a systematic process for safety accident prevention in dental clinics and emphasize the importance of prevention through continued safety education be needed.

• The Journal of Korean Physical Therapy
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• v.12 no.2
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• pp.255-265
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• 2000

The term 'myositis ossificans' encompasses four categories of clinicopathological disorders. The first, myositis ossificans progressive(fibrodysplasia ossificans progressive), is a rare genetic disease characterized by progressive heterotopic ossification involving skeletal muscle, tendon, ligaments, and fascia, with congenital malformation of the great toes, and usually microdactyly, monophalangism, and mal formed proximal phalanges. with valgus deformity of metatarsophalangeal joint. The ossification begins shortly after birth and may contribute to the patient's death. The second, heterotopic ossificans, can occur in patients with neuromuscular and chronic diseases such as paraplegia, poliomyelitis, polymyositis, bum, tetanus, and infection. But the lesions in these cases often lack the typical histologic features of myositis ossificans. The third, myositis ossificans traumatica, is the most common; it develops in response to soft tissue trauma such as a single severe injury, minor repetitive injures, fracture, joint dislocation, stab wound, or surgical incision. The forth, nontraumatic myositis ossificans, also designated :pseudomalignant osseous tumors of extraskeletal soft tissues' and 'psedomalignant myositis ossificans', occurs in persons repeated small mechanical injures or nonmechanical soft tissue injuries due to local ischemia, inflammation. or other factors cannot be ruled out in such cases.

• Journal of the Korean Society for Railway
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• v.12 no.3
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• pp.405-411
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• 2009

Railway signaling system in a rapid transit using the ATC system the approved a speed limit to a train and a part of signaling system in a metro approved a distance which is possible to move. Referring to the way of transmitting train control information, there are the one transmitting it to the on-board system of a train using the direct track, the another transmitting it establishing an instrument, and the other transmitting an instrument by a railway track. The one is the method using the direct track as a conductor for composing the part of the track and attaining the information controlling a train by transmitting a signal to the track. It is used for the high-speed railway and the subway. The method using the track attains information by transmitting it to returned information, and the on-board system of a train attains it by magnetic coupling. Because many reinforcing bars on the concrete slab track are used, interaction between a rail and a reinforcing bar that is not produced on ballast track is made. Due to the interaction, the electric characteristic of rail is changed. In the current paper, we numerically computed the coupling coefficient between the rail and the reinforcing bar based on the concrete slab track throughout the model related to the rail and the reinforcing bar using the concrete slab track that is used in the second interval of the Gyeongbu high-speed railway, and we defined the coupling coefficient not changed in the electric characteristic of rail in the condition that there is no interaction between the rail and the reinforcing bar.

• Journal of Veterinary Clinics
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• v.31 no.5
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• pp.371-375
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• 2014

This article describes the use of laparoscopic-assisted cystoscopy for removal of urinary calculi in five dogs. All dogs had micturition disorder due to urinary calculi. The surgical technique used was same in all cases. A urethral catheter passed into the urinary bladder through the urethra preoperatively. A 5-mm diameter cannula was placed in the ventral midline, 1 to 2 cm cranial to the umbilicus, and the 5-mm laparoscope was introduced via the cannula. A 10-mm diameter cannula was placed adjacent to the apex of the bladder under the visual guidance of laparoscopy. The bladder was then partially exteriorized through the 10-mm portal site, and a stab incision was performed on the bladder wall. The incisional margin of the bladder was sutured to the skin of the second portal site in $360^{\circ}$ simple continuous suture. A 2.7-mm diameter cystoscope with a sheath was introduced into the bladder lumen. The cystic and urethral calculi were removed under the visual guidance of cystoscopy with continuous fluid flushing. No major postoperative complications were identified. During the follow up period (range 7 to 21 months), no episodes of urinary dysfunction or recurrence of clinical signs were observed.

• Korean Journal of Bronchoesophagology
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• v.16 no.2
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• pp.121-125
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• 2010

Background: Penetrating neck injuries are potentially dangerous and require emergency management because of the presence of vital structures in the neck. The risk of airway, vascular, neurological, and pharyngoesophageal injuries leads to many difficult diagnostic decisions. The purpose of this retrospective study is to evaluate our experience with management of penetrating neck injuries, and to assess treatment outcome. Material and Method: Forty-two consecutive patients were identified (26 patients from Korea university Ansan hospital, 16 patients from Guro hospital) as having penetrating neck injuries from 2003 to 2009. With review of medical records, variables were collected and evaluated including the location of injury, mechanism of injury, number of significant injuries, diagnostic modalities, duration of hospital stay and outcome. Results: The location of injury was zone I (lower neck) in 13 cases (31%), zone II (midportion of the neck) in 22 (52%), and zone III (upper neck) in 7 (17%). Injuries were caused by stab wounds in 23 patients, penetrating foreign bodies in 12. Among 35 patients who had deep injuries that violated the platysma, significant injuries, including major vascular (20), trachea (5) Pharyngoesophageal injuries (5) were identified in 24 patients. The mean hospital stay was 9.5 days. Conclusion: The penetrating trauma in the neck may show various degrees of severity. However, Cervical penetrating injury should not be underestimated in spite of the minimal width of the lesion.