• Journal of Chest Surgery
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• v.20 no.2
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• pp.270-280
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• 1987

One hundred thirteen cases of open heart surgery were performed in the department of thoracic and cardiovascular surgery of Inha General Hospital from April 1986 to April 1987. There were 73 cases of congenital heart disease and 40 cases of acquired valvular heart disease, including one redo case respectively. The technique of deep hypothermia with circulatory arrest was used widespreadly for infants and small children, and early extubation was performed as possible in the great number of all cases. There were three operative deaths [2.7%], all in congenital cases, and three follow-up deaths, all in acquired cases.

• Animal Bioscience
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• v.34 no.11
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• pp.1776-1783
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• 2021

Objective: This project aimed to evaluate the effects of both different additives and filling methods on nutritive quality, fermentation profile, and in situ digestibility of whole plant corn silage. Methods: Whole plant corn forage harvested at 26.72% dry matter (DM) was chopped and treated with two filling methods, i) fill silos at one time (F1), ii) fill silos at three times (F3), packing samples into one/three silo capacity at the first day, another one/three capacity at the second day, then one/three at the third day, three replicates. For each replicate, samples were treated with three additives, i) control (CTRL, no additive), ii) Sila-Max (MAX, Ralco Nutrition Inc., Marshall, MN, USA), and iii) Sila-Mix (MIX, Ralco Nutrition Inc., USA). With three replicates of each secondary treatment, there were nine silos, 54 silos in total. Each silo had a packing density of 137.61 kg of DM/m3. All silos were weighed and stored in lab at ambient temperature. Results: After 60 d of ensiling, all items showed good silage fermentation under MAX filled one time or three times (p<0.01). Higher silage quality for all additives was obtained at filling one time than that filled three times (p<0.01). The highest DM and lowest DM loss rate (DMLR) occurred to MAX treatment at two filling methods (p<0.01); Digestibility of acid detergent fiber, neutral detergent fiber (NDF), and curde protein had the same results as silage quality (p<0.01). Yield of digestible DM and digestible NDF also showed higher value under MAX especially for filling one time (p<0.05). Conclusion: All corn silages showed good fermentation attributes (pH<4.0). The forage filled one time had higher silage quality than that filled three times (p<0.01). MAX with homofermentative lactic acid bacteria enhanced the lactic acid fermentation, silage quality and nutrient digestibility, and so improved the digestible nutrient yield.

• Bulletin of the Korean Mathematical Society
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• v.54 no.1
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• pp.289-298
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• 2017

Let R denote a commutative Noetherian (not necessarily local) ring and let I be an ideal of R of dimension one. The main purpose of this note is to show that the category ${\mathfrak{M}}(R,\;I)_{com}$ of I-cominimax R-modules forms an Abelian subcategory of the category of all R-modules. This assertion is a generalization of the main result of Melkersson in [15]. As an immediate consequence of this result we get some conditions for cominimaxness of local cohomology modules for ideals of dimension one. Finally, it is shown that the category ${\mathcal{C}}^1_B(R)$ of all R-modules of dimension at most one with finite Bass numbers forms an Abelian subcategory of the category of all R-modules.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.1
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• pp.1-5
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• 2016

The all-in-one service, for example, mobile wallet enables users to have credit card, membership card, and coupon in one place. It has been one of important o2o services with offline payment. In order to take advantage of mobile commerce, it is necessary to authenticate clients automatically without entering their passwords. This paper proposes an automatic client authentication method in all-in-one service. At registration, clients receives and stores an authentication ticket from a company, which contains an user's identifier and password encrypted by company's symmetric key. Client can be authenticated by transferring authentication tickets to companies at service requests.

• Journal of Chest Surgery
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• v.19 no.4
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• pp.699-706
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• 1986

We have experienced 5 cases of Pectus excavatum corrected by Ravitch method without use of K-wire or metal bar from Jan. 1985 to Apr. 1986. All cases were male. The symmetric depression was in 4 cases, asymmetric one was in one case. The chief complaints were dyspnea on exertion, frequent U.R.I. and inferiority. The flail chest was developed in all cases, but it was insignificant in all cases except one who needed assist ventilation. Mediastinitis was developed in one case one week postoperatively but well managed with drainage. A distance from the posterior surface of sternum to the anterior surface of vertebral body was estimated preoperatively and postoperatively. Postoperative result was evaluated as the change of distance postoperatively. The change was 1.5cm minimally to 3.5cm maximally. Late results were "Excellent" in 3 cases and "Good" in 2 cases.uot; in 2 cases.

• Journal of Chest Surgery
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• v.4 no.1
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• pp.43-50
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• 1971

Three patients who sustained penetrating stab wound of the heart have been treated successfully by emergency thoracotomy in the Department of Thoracic Surgery, Chonnam University Hospital. There were two knife and one glass wound. The location of the injury were all on the right ventricle, but in one patient, it was penetrated to ventricular septum. All patients were in shock with a systolic pressure under 60 mmHg when admitted to the emergency room. In one of the three patients, blood pressure was not detectable and subsequently cardiac arrest. Two patients required immediate thoracotomy because of intrathoracic hemorrhage and increased pericardial tamponade and the other one required prompt thoracotomy because of sudden onset of cardiac arrest. There were no death postoperatively. Two patients are living without any complication in 4 years and 4 weeks after operation. One who had penetrating wound to ventricular septum, turned to cardiac decompensation, but he is living now in 4$\frac{1}{2}$ years after operation. Exploratory thoracotomy should be performed immediately in all the patients in whom a penetrating wound of the heart or pericardial tamponade following a penetrating wound of the chest wall is suspected.

• Restorative Dentistry and Endodontics
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• v.30 no.4
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• pp.283-293
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• 2005

The purpose of this study was to evaluate the effect of dual bonding technique by comparing microshear bond strength between two different luting methods of resin cement to tooth dentin. Three dentin bonding systems(All-Bond 2, One-Step, Clearfil SE Bond), two temporary cements (Propac, Freegenol) were used in this study. In groups used conventional luting procedure, dentin surfaces were left untreated. In groups used dual bonding technique, three dentin bonding systems were applied to each dentin surface. All specimens were covered with each temporary cement. The temporary cements were removed and each group was treated using one of three different dentin bonding system. A resin cement was applied to the glass cylinder surface and the cylinder was bonded to the dentin surface. Then, micro-shear bond strength test was performed. For the evaluation of the morphology at the resin/dentin interface, SEM examination was also performed. 1. Conventional luting procedure showed higher micro-shear bond strengths than dual boning technique. However, there were no significant differences. 2. Freegenol showed higher micro-shear bond strengths than Propac, but there were no significant differences. 3. In groups used dual bonding technique, SE Bond showed significantly higher micro-shear bond strengths in One-Step and All-Bond 2 (p<0.05), but there was no significant difference between One-Step and All-Bond 2. 4. In SEM observation, with the use of All-Bond 2 and One-Step, very long and numerous resin tags were observed. This study suggests that there were no findings that the dual bonding technique would be better than the conventional luting procedure.

• Restorative Dentistry and Endodontics
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• v.29 no.5
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• pp.423-429
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• 2004

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. Flat occlusal dentin surfaces were prepared using low-speed diamond saw. In group I, Scotchbond Multipurpose (SM) was applied by manufacturer's recommendation. In group II, after Adper Prompt L-Pop was applied for 15s and light cured for 10s. the second coat was re-applied and light-cured. In group III, after light-curing the second layer. the third coat was re-applied and light-cured. Specimens bonded with a resin-composite were sectioned into resin-dentin stick for measuring the adhesive layer thickness by confocal laser scanning microscope and evaluating micro-tensile bond strength. The adhesive layers of three-step dentin adhesive system. 3 coats of Adper Prompt L-Pop had significantly thicker than SM. 2 coats of Adper Prompt L-Pop (p < 0.05). However. there was no significant differences in bond strengths between SM and 3 coats of Adper Prompt L-Pop (p > 0.05). And SM. 3 coats of Adper Prompt L-Pop had significantly higher than 2 coats of Adper Prompt L-Pop in bond strengths (p < 0.05).

• Korean Journal of Health Education and Promotion
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• v.2 no.1
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• pp.107-112
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• 1984

In order to develop the school dental health care in rural area, the author collected data about the population of all 6-17 year students living in Young dong-gun county, and Surveyed their dental health cares during one year of 1982. From the collected data, several dental health indices such as percentage of students of all population, percentage of students who visited dentists once or more during one year, average annual dentist visit and average annual dental treatment case were calculated and discussed. The obtained results were as follows; 1. The percentage of students of all population in Young dong-gun county was 29.65%. 2. The percentage of students who visited dentists once or more during one year was 4.67%. 3. The average annual dentist visit per student was 0.11. 4. The average annual dental treatment case per student was 0.16. 5. The oral examination case was 0.05, intraoral radiograph 0.01, oral prophylaxis 0.00, filling of dental carious lesion 0.02, pulp treatment 0.02, extraction of teeth 0.04, and others 0.02 annually in the average. In comparison with detectable need for dental treatment cases, oral prophylaxis was not supplied at all, filling of dental carious lesion was supplied about 1% and extraction of teeth was supplied about 10% of detectable need. 6. It was recommended that school incremental dental care project should be developed for school dental health programme in order to supply all of the detectable need for dental treatment.

• Bulletin of the Korean Mathematical Society
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• v.26 no.1
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• pp.35-42
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• 1989

Let .ohm.$_{n}$ and Pm $t_{n}$ denote the sets of all n*n doubly stochastic matrices and the set of all n*n permutation matrices respectively. For m*n matrices A=[ $a_{ij}$ ], B=[ $b_{ij}$ ] we write A.leq.B(A$a_{ij}$ .leq. $b_{ij}$ ( $a_{ij}$ < $b_{ij}$ ) for all i=1,..,m; j=1,..,n. Let $I_{n}$ denote the identity matrix of order n, let $J_{n}$ denote the n*n matrix all of whose entries are 1/n, and let $K_{n}$=n $J_{n}$. For a complex square matrix A, the permanent of A is denoted by per A. Let $E_{ij}$ denote the matrix of suitable size all of whose entries are zeros except for the (i,j)-entry which is one.hich is one.