• The Journal of the Korea institute of electronic communication sciences
• /
• v.16 no.6
• /
• pp.1349-1354
• /
• 2021

An All-in-one LED lantern is a light device to determine the fairway of ships in operation. The current all-in-one LED lantern powered by solar energy is challenged by insufficient power capacity due to limited sun hours. This article presents an all-in-one 9-Nautical mile LED lantern driven by solar and wind power that is abundant maritime renewable energy. Furthermore, the remote smart monitoring system is developed. A smart control system capable of remote control of the lantern was implemented by using the LED lantern device and monitoring system as IoT. This technology that realtime condition monitoring and remote control are developed for safe ship navigation. We expect that maintaining the accuracy and consistency of LED lanterns prevents marine accidents and reduces social costs.

• Journal of Veterinary Clinics
• /
• v.34 no.6
• /
• pp.434-436
• /
• 2017

Nine dogs with history of lameness and anorexia were presented. On physical examination, all dogs had gait abnormality and six dogs had high body temperature. Their clinical signs were mostly episodic, and only non-specific symptoms were occasionally observed. Arthrocentesis was performed in all dogs, and immune-mediated polyarthritis (IMPA) was diagnosed. Definitive rheumatoid arthritis (RA) and systemic lupus erythematous (SLE) were diagnosed in one dogs, one each. Prednisolone (PDS) was chosen as the first-line therapy for all dogs, except for the one with RA. Most cases responded to PDS but some cases including those of SLE and RA were refractory to PDS. IMPA can be challenging to diagnose due to its vague symptom and is commonly implicated in 'fever of unknown origin'. Therefore, clinicians should consider IMPA as a differential diagnosis when the patient has fever with systemic, non-specific signs, such as anorexia and depression, but does not respond to antibiotics.

• Proceedings of the KACD Conference
• /
• 2003.11a
• /
• pp.567-567
• /
• 2003

The purpose of this study was to evaluate the effect of multiple application of all-in-one dentin adhesive system on microtensile bond strength using confocal laser scanning microscope and microtensile bond strength test. The dentin surface of human molars, sectioned to remove the enamel from the occlusal surface were prepared. In group I, Scotchbond Multipurpose(SM, 3M ESPE) was applied by manufature's recommended. In group II, after the all-in-one adhesive, Adper Prompt L-Pop was applied for 15s, and light cured for 10s, the second coat was re-applied and light-cured.(omitted)

• Journal of Chest Surgery
• /
• v.20 no.1
• /
• pp.161-170
• /
• 1987

Fifty-nine cases of congenital chest wall defects experienced in the department of thoracic surgery of Seoul National University Hospital were analyzed and the relevant literatures were reviewed. They are 52 cases of funnel chest, 3 cases of pigeon breast, one case of superior sternal fissure, one case of costochondral incurvation, one case of Cantrell`s pentalogy, and one case of Poland`s syndrome. Funnel chest affected males more frequently than females by 44 to 8. All of the funnel deformities were corrected by Ravitch operation or its modification except one which was the first case of this series and was corrected by a sterno-turnover. Two cases required a mechanical ventilation for 3 days and 5 days respectively. Four minor complications which were two cases of skin wound infection and 2 cases of fluid accumulation were noted. Skin would infection was repaired by a secondary closure and fluid accumulation was treated by aspiration only. The result are all excellent without recurrence or reoperation. In 3 cases of pigeon breast, they were treated by subperichondrial resection of all of the involved costal cartilages and shortening their course with reefing sutures in the perichondrium with excellent result. The superior sternal fissure which was combined by a ventricular septal defect was treated by a simple wire closure with a good result. The costochondral incurvation was corrected by subperichondrial resection of deformed cartilages and a rib graft removed from the contralateral normal side. The Poland syndrome and the Cantrell`s pentalogy was already presented previously.

• Restorative Dentistry and Endodontics
• /
• v.29 no.1
• /
• pp.66-72
• /
• 2004

All-in-one adhesives were recently developed for reducing the technique sensitivity and chair time, but lots of concerns were made on bondability, longevity, and microleakage. The object of this study was to evaluate microleakage and marginal quality of all-in-one adhesives using electrochemical method and SEM analysis quantitatively. After making Class V cavities, they were bulk filled with Heliomolar(#A1 after surface treatment with three adhesives: Adper Prompt (Group A), One up bond F (Group O), Xeno III (Group X) Electrical conductivity (microamphere, ${\mu}A$) was checked two times: before and after cavity filling. Percentage of leaky margin was estimated from SEM image (${\times}1,000$). The data were statistically analysed: ANOVA and Paired T test for electrical conductivity, Kruskal-Wallis and Mann-Whitney test for marginal quality, Spearman s rho test for checking of relationships between 2 methods. The result were as follows: 1. There was no difference in microleakage between adhesive systems and every specimen showed some of microleakage after filling. 2. Microleakage was reduced about 70% with composite resin filling. 3. Marginal quality was the best in group A. decreasing among groups in the following order: group O, followed by group X. There were significant differences between group A and group X (p=0.015), and between group 0 and group X (p=0.019). 4. There was no relationship between the microleakage measured by electrochemical method and marginal quality measured by SEM analysis. Within the results of this study, there was no difference in microleakage among groups by electrical conductivity. However, significant difference in marginal quality was seen among groups. It was believed that these dissimilar results might be induced because of their own characteristics. Analysis of microleakage needs various methods for accuracy.

• Journal of Chest Surgery
• /
• v.23 no.6
• /
• pp.1118-1127
• /
• 1990

Arterial switch operation for repair of nineteen cases of transposition of the great arteries associated with ventricular septal defect and three cases with double outlet right ventricle with subpulmonary ventricular septal defect[Taussig-Bing type DORV] was performed from November 1987 to September 1990 at the Seoul National University Children`s Hospital. Sixteen of them were under six months of age, and three were under one year of age with body weight ranged from three to fourteen kilograms. Preoperative cardiac catheterization was done in eighteen patients, in which the pressure of the left ventricle was greater than 70% of the right ventricle in all but one. Patent ductus was associated in thirteen cases[68.4%] of TGA+VSD, and atrial septal defect or patent oval foramen was in sixteen cases. Four atrial septostomy, one modified Blalock- Taussig shunt, one pulmonary artery banding, one coarctoplasty using subclavian arterial flap, were perfomed before arterial switch operation. There were five hospital deaths, all in the. patients with transposition of the great arteries with ventricular septal defect[overall mortality rate 22.7%]. Lecompte Maneuver was used in all patients, and in all patient the U-shaped flap of coronary arteries were transposed to V-shaped cleavage created in the neoaorta. Arterial defect in the neopulmonary artery was covered with 0.0625% Glutaraldehyde fixed autogenous pericardium There have been no late deaths, Postoperative cardiac catheterization and angiocardiogram in four patients has revealed no stenosis in the neopulmonary artery or neoaorta with reasonable P[RV/LV], Anatomic correction for transposition and double outlet right ventricle with subpulmonary ventricular septal defect would seem to be a good operative alternative to intraatrial switch procedures, with the advantage of incorporating the left ventricle to systemic circulation.

• Restorative Dentistry and Endodontics
• /
• v.21 no.2
• /
• pp.569-584
• /
• 1996

The purpose of this study was to elucidate the effect of benzalkonium chloride on tensile bond strength of BPDM/HEMA dentin bonding. One hundred sixty dentin specimens from freshly extracted bovine mandibular incisors were used, and 0, 0.02, 0.1 or 0.5% benzalkonium chloride solution was applied to the dentin specimen with/after phosphoric acid. 32% phosphoric acid was used when the specimens were bonded with One-Step$^{TM}$, a BPDM/HEMA system and 10% was used when bonded with All-Bond$^{(R)}$ 2, a NTG-GMA/BPDM system. Aelitefil$^{TM}$ composite resin was bonded to the pretreated dentin specimen with the use of All-Bond$^{(R)}$ 2 or One-Step$^{TM}$ dentin bonding agent. After the bonded specimens were stored in $37^{\circ}C$ distilled water for 24 hours, tensile bond strength was measured. The fractured dentin specimens were examined under the scanning electron microscope. The results were as follows : Benzalkonium chloride application after acid-treatment resulted in decrease of dentin bond strength of One-Step$^{TM}$, a BPDM/HEMA system (p>0.05). Benzalkonium chloride application did not exert any influence on dentin bond strength of All-Bond$^{(R)}$ 2, a NTG-GMA/BPDM system (p>0.05). There was no relationship between the concentration or application method of benzalkonium chloride and the dentin bond strength of One-Step$^{TM}$ or All-Bon$^{(R)}$ 2 (p<0.05). On SEM examination of the fractured dentin-resin interface, while mixed failure was prominent in dentin bonding with One-Step$^{TM}$, adhesive and mixed failures were seen together in dentin bonding with All-Bond$^{(R)}$ 2 regardless of the concentration and application method of benzalkonium chloride.

• Journal of Chest Surgery
• /
• v.28 no.1
• /
• pp.31-36
• /
• 1995

Between January 1984 to June 1994, fourteen patients from 37 to 80 years of age [mean 66.42 11.71 years of age have undergone surgical treatment of abdominal aortic aneurysm in Kyung Hee Univ. Hospital. There were 11 males and 3 female patients. All but one were infra-renal type. The etiology of the aneurysm consisted of twelve atherosclerotic, one inflammatory and one traumatic abdominal aortic aneurysm.Two patients were operated on for ruptured abdominal aortic aneurysm. We performed dacron graft interposition in all patients and one patient was also performed aorto-renal end to side anastomosis. Two patients died of postoperative complications which was a pulmonary insufficiency in one, acute renal failure in another patient.Remaining twelve patients were discharged with good condition and followed up from 2 months to 87 months.[mean $34.58{\pm}29.79$ months.

• Journal of Veterinary Clinics
• /
• v.21 no.4
• /
• pp.343-348
• /
• 2004

This study was carried out to investigate the difference between sutured anastomosis and stapler anastomosis (open lumina technique) of jejunum in dogs. Fifteen mongrel-breed female dogs weighting 4 to 6 kgs were allocated to three groups; sutured end-to-end anastomosis (Group I), sutured side-to-side anastomosis (Group II) and stapler anastomosis (Group III), five dogs per each group. All dogs in different anastomosis pattern were compared with time for total operation and suture elapsed for intestines to anastomose, clinical signs, status of feces, complications for 14 days after operation. The total operation time and suture time needed for intestinal anastomosis were significantly(p<0.05) shorter in Group III than Group I and II. All dogs showed no significant difference in vitality, appetite, vomiting between groups for 14 days after operation. All dogs, except one dog in Group II, showed normal vitality and appetite since 7-8 days after operation. Initial return of fecal passage showed in all dogs 8 days after operation and thereafter normal feces were observed in most of the dogs. According to results, all dogs with normal vitality and appetite for 8 days showed good prognosis. In complications after operation, only one dog in Group II showed dehiscence of anastomotic site. There was significant(p<0.05) differences between groups in speed of operation. And all dogs, except one dog in Group II, showed good clinical condition and prognosis. In conclusion, the stapler anastomosis is considered to be more reliable, faster, and precision method compared to the sutured anastomosis for intestinal anastomosis in dogs.

• Journal of Korean Society for Quality Management
• /
• v.31 no.4
• /
• pp.219-225
• /
• 2003

Two­dimensional warranty data can be modelled using two different approaches： two­dimensional point process and one­dimensional point process with usage as a function of age. The first approach has three different models. First of all, bivariate model is appealing but is not appropriate for explaining warranty claims. Next, the rest of the two models (marked point process, and counting and matching on both directions independently) are more appropriate for explaining warranty claims. However, the second one (counting and matching on both directions independently) assumes that the two variables (variables representing the two­dimensions) are independent. Last of all, one­dimensional point process with usage as a function of age is also promising to explain the two­dimensional warranty claims. But the models or variations of them need more investigation to be applicable to real warranty claim data.