혼합치열기의 miniscrew를 이용한 교정치료

임수민,양연미,김재곤,백병주,이용훈,신정근 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.2

Anchorage plays an important role in orthodontic treatment, Skeletal anchorage like the miniscrew is considered a more effective method in anchorage control than conventional anchorage which needs much patient s cooperation. The miniscrew offers many advantages. 1) It is easy to insert and to remove. 2) It can endure the force needed for moving teeth. 3) It can be immediately loaded and 4) Patient cooperation is not needed. 5) It is economic compared to other skeletal anchorage systems, In comparison to adult's bones, children s bones have comparatively poor bone quality and quantity. Therefore, it is hard to obtain primary stability in younger patients. However, if the miniscrew can be retained successfully, it will be effective in many orthodontic treatments. In these cases we used the miniscrew in correcting of diastema, in aligning dental midline, and in rendering a forced eruption of impacted tooth in mixed dentition patient. We obtained satisfactory results. 교정치료 시 고정원은 항상 염두에 두면서 치료를 진행해야 하는 중요한 요소이다. 전통적인 고정원을 이용한 치료는 환자의 적극적인 협조를 필요로 하고 원하는 치아이동에 대한 반작용이 나타날 수 있는 등의 부작용을 가지고 있다. 그러므로 보다 견고한 구강 내 고정원이 요구되어져 왔으며 이를 위해 miniscrew가 임상에서 흔히 이용되고 있다. Miniscrew를 통한 고정원의 확보는 구외력 의존도 감소,치료기간의 단축,식립 후 즉시 교정력 적용,환자의 협조도 불필요,식립의 간편성,저렴한 비용 등의 장점을 가지고 있다. 그러나 성장기 환자는 성인에 비해 골질이 좋지 않아 miniscrew의 성공률이 성인에 비해 낮다. 그러나 일단 고정에 성공하면 많은 교정치료 시 매우 유용하게 이용할 수 있다. 본 증례는 흔합치열기 환자를 miniscrew를 이용하여 정중이개 및 정중선 불일치,매복치에 대한 양호한 교정치료를 하였기에 보고하는 바이다.

아몰퍼스 리본에 의한 변위센서

임재근,강재덕,신용진 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

In this thesis, we fabricate a zero-magnetostrictive amorphous ribbon, measure the impedance effect, and then investigate possibility to be used as a sensor material. Co72.5Fe5.5MoB15Si5 is used as composition of specimen alloy. We first melt the specimen in high frequency induction furnace and then rapidly quench it by using single roll technique. As the result, we obtain a ribbon where length=93㎜, thickness=12㎛ and width=1㎜. Consequently, it is proved through this study that zero-magnetostrictive amorphous ribbon can be used as an excellent magnetic sensor material.

Sr·페라이트의 자기특성에 관한 연구

임재근,서강수,문현욱,신용진 明知大學校 産業技術硏究所 1992 産業技術硏究所論文集 Vol.11 No.-

This thesis is the study on the magnetic properties of strontium (Sr) ferrite. Specimens of SrO·nFe₂O₃,basic composition, with n=5.9 which is nonstoichiomatric composition region were prepared by sintering at 1275°C for 1hr, whthin air surroundings. In order to increase coercivity, additives of 0.4wt%SiO₂ and 0.7wt%CaCO₃ were added into basic composition, and 0.5wt%∼2.0wt%Cr₂O₃ was added as second additives. In case of second additives 1.5wt%Cr₂O₃, it was obtained uniformed grain size and magnetic properties was increased. The sintering temperature was 1150°C, 1180°C, 1210°C, 1240°C and 1270°C respectivily and cooling was performed in furnance. From the research and experiments on the magnetic properties of strontium (Sr) ferrite based on the complex additive technique, it was obtained good magnetic properties of (BH)mas=0.72MGOe, at the sintering temperature of 1210°C, in the case of (basic composition)+(basic additive)+(1.5wt%Cr₂O₃)

일부 중소병원 조직구성원의 갈등이 직무만족과 조직몰입에 미치는 영향

임경태,강명근,전재두,박계남,김기순 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Objectives and Method : This study was conducted to identify the influences of conflict among hospital employees on job satisfaction and organizational commitment measured as the result variables of organizational conflict. The data for this study were collected from 305 employees who were employed as a physician, a nurse, an administrative personnel or other hcalthcare professional in 4 medium-sized general hopitals in 2 middle sized cities including Yeosu and Soonchcon. The survey instrument used in this study was a structured questionnaire developed from modifying those of some previous studies, for example, Minnesota Satisfaction Questionnaire for a measure of job satisfaction. Results : 1. The groups experienced relatively high degree of overall intra- organizational conflict were the female, the younger, the non-married or the divorced married, and the college-graduated. And according to the job-related variables, these groups were the lower-salaried employees with a lower job status, 3 or 5 years on their duties, especially the nurses. 2. The degree of conflict experienced by the hospital employees was highest in the intra-organizational conflict due to the factors such as a gap of goals, communication problems and were relatively lower in the conflict due to the factors such as a collective coherence, an interdependence, a leadership problem. And the degree of conflict due to the horizontal relationship with their colleagues was higher than that of vertical relationship with their bosses or subordinates. 3. Comparcd with the degree of conflict according to the general characteristics of our study subjects, the degree of job satisfaction and organizational commitment of them were reverse in that the male, the elderly, the married, the eradnated of praduate school, the physicians, and higher-salaried employees with a higher job status, 6 vears or more on their duties perceived the highest degree of the job satisfaction and the organizational commitment. As a result of correlation analysis, all values of correlation coefficients between the degree of intra-organizational conflict and the degree of the job satisfaction, the organizational commitment were negative. 4. As a result of a multiple regression analysis inputting the variables such as variable general characteristics and job-related variables as the putative confounders, the conflict scores due to the factors such as the communication problems, leadership problems, individual personality were the significant independent variables having negative influence on the overall, intrinsic, and extrinsic components of job satisfaction. 5. As a result of a multiple regression analysis inputting- the variables such as general characteristics and job-related variables as the putative confounders, the conflict scores due to the factors such as an interdependence, leadership problems, and an individual personality were the significant independent variables having negative influence on the score of organizational commitment. And as a result of a multiple regression analysis inputting scores of conflict factors, scores of conflict types, intrinsic and extrinsic components of job satisfaction, and above putative confounders altogether as independent variables, the significant independents having influence on the score of organizational commitment were conflict scores due to the interdependence (β=-0.379; p=0.026), the individual personality (β=-0.716: p=0.000), conflict score from vertical interpersonal relationships (β=-0.555; p=0.019), intrinsic (β=0.097; p=0.000) and extrinsic (β=0.076: p=0.049) components of job satisfaction. Conclusion : Our research had some limitations, which, for example, were an omitting some job related putative confounders such as a daily work loading measured by an individual. But the fact that all the regression models showed hig'h explanatory power suggested the bias due to this problem might be little. And we hope to be conducted more advanced researches with robust theoretical background and precise analytic tools, in this research area.

아몰퍼스 리본의 자기특성과 자구구조

임재근,신용진 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-

In this thesis, we measure the Barkhausen effect of zero-magnetostrictive amorphous ribbon and then investigate its possibility to be used as a sensor material. We used a sample of composition (Fe Co ) Si B with a thickness of 12[㎛], width of 2.5[㎜] and length of 5[㎝], which was fabricated by a single roll method. In order to improve magnetic characteristics of th sample, we had carried on annealing in the magnetic field and in none magnetic field. Our measurement results of the magnetic characteristics show that the ribbon jas large Barkhausen jump even in weak magnetic field. We also observed magnetic domain and magnetic domain wall structure in the process of magnetization by using Kerr-effect microscope. These prove that the sample can be used as an magnetic sensor material.

TPM 우수기업을 위한 KS A ISO 2859-1과 KS A 3109와의 비교 분석

임재근,조병선,정수일 대한설비관리학회 2004 대한설비관리학회지 Vol.9 No.4

The growing importance of the product quality of the manufacturing industry is becoming more and more apparent as we enter the end of faster and deeper globalization trend. At the same time, among the various factors affecting the quality of the product, the importance of the production equipment is ever increasing. As a result, the TPM activity in Korean industries is getting increasing recognition and is being implemented with faster phase than ever. The companies with superior product quality are heavily involved with TPM activities and the product qualities of these companies are definitely better than the others. When we distinguish the product quality process into 3 steps, i.e. quality secure-quality confirm-quality guarantee, of course the 1st step of secure is the most important, but also the 2nd step of onfirm is one of the most important step. As well in mass production environment, sampling inspection is more desirable than the 100 % inspection procedure. As a part of globalization trend, KS system is also being revised and reestablished based on ISO, IEC, etc. *which are based on international standard. Conventional KS sampling inspection standards were in many areas quite different from ISO sampling inspection standards, only KS A 3102, 3104, 3151 are left and the rest be-come obsolete, and even the ones that are still around are planned to the gone step by step. It has been already 3 years since the new KS A ISO 2859-0--3 sampling inspection process has been established which the abolition of the popular KS A 3101, KS A 3105, KS A 3109, yet the implementation rate is very slow. This study will attempt to compare the old KS A 3109 with new KS A ISO 2859-0~3, and try to understand the difference as that the new standard can be easily understood and used widely among companies, by using examples. Our attempt is to help implement with the companies with active TPM involvement but the final result can be spread among other companies as well in the near future.

아몰퍼스 박막의 자기특성에 관한 연구

임재근,서강수,신용진 明知大學校 産業技術硏究所 1994 産業技術硏究所論文集 Vol.13 No.-

In this paper, we study on the fabrication of amorphous thin film of zero-magnetosrtiction material and the magnetic properties. This films are fabricated by using sputtering method with input power of 400-6000[W]. Ar gas pressure of 3~9[mTorr] and target composition of Fe4.7Co74.3Si2B19. Sample thin films with diameter of14 [mmΦ] and thickness of20-35[㎛ ] were obtained through experiments. When we analyzed the magnetic properities before and after annealing with sample thin films, we confirmed that magnetic domain wall consisted of Neel magnetic domain wall with the width of about1[㎛ ].

서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1997)

김재홍,문득곤,김정수,김용준,임동진,박상훈,김희성,이민수,송기훈,김갑형,김형석,성소영,이인섭,김석우,황지환,조창근,김경문,부태성 대한화학요법학회 2000 대한화학요법학회지 Vol.18 No.3

Background : In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. Objective & Methods : For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1997. 99 strains of N. gonorrhoeae were isolated, among which 45(45.5%) were PPNG. Conclusion : The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 45.5% in 1997.

CoFeSiB아몰퍼스리본의 자기감성기능

강재덕,임재근,신용진 明知大學校 産業技術硏究所 2000 産業技術硏究所論文集 Vol.19 No.-

This thesis has studied the magnetic sensing function by using an amorphous magnetic ribbon which has a zero-magnetostrictive composition its magnetic properties through the annealing technique in the demagnetization were measured in the magnetic field. We used a sample of composition (Fe0.06Co0.94)79Si2B19 with a thickness, length and width were 12㎛, 5㎝ and 2.5㎜, As a result of measuring the hysteresis curve of the sample which was examined inducing the pinning site of magnetization filed, the sample which was carried out the two annealing step shows that the LBJ(Large Barkhausen Jump) effect was confirmed at the reversal magnetization field Hw of 0.5 Oe and observed by the variation of the magnetic domain with the process of magnetization. And the sample with was used in this experiment was confirmed to have a magnetic sensing function.

교흔으로 인해 발생한 Eikenella corrodens 간농양 1예

고근준,이은재,최형섭,김상수,최정은,임환섭,김준명,이꽃실 대한감염학회 2004 감염과 화학요법 Vol.36 No.2

E. corrodens는 면역저하 환자에서 주로 문제를 일으키며, 감염시 두경부, 폐, 복부 등에 위험을 초래할 수 있어 치료의 적절성에 대한 중요성이 부각되고 있다. Eikenella corrodens는 균 동정을 위해 CO₂의 공급을 필요로 하며 서서히 자라는 특성상 까다로운 배양조건을 필요로 하는 균주이다. 혐기성 균주이지만 metronidazole이나 clindamycin과 같은 항균제에는 반응을 안하는 특이한 항생제 감수성에 의해 보편적인 구강내 상재균에 대한 경험적 치료에 실패할 수 있다. 치료에 있어 잘못된 초기 항생제 선택이나 외과적 시술이 적절히 시행되지 않은 경우에 치료실패의 요인이 될 수 있으므로 적절한 항생제 사용과 함께 외과적 처치가 동반되어야 한다. 저자들은 정상 면역력을 가진 성인에서 사람에게 물리고 난 후 발생한 E. corrodens에 의한 간농양의 적절한 치료의 결과를 문헌고찰과 함께 보고하는 바이다. Eikenella corrodens is a slow growing, facultatively anaerobic gram-negative rod that is part of the normal flora of the oral cavity and upper respiratory tracts. In most patients with E. corrodens infections, host defenses are compromised due to surgery, or chronic debilitating illness such as malignancies, or immunosuppressive therapy. This organism causes abscesses and infections that are at times fatal. We experienced a case of E. corrodens isolated from liver abscess in an immunocompetent patient. A 50-year-old man who is a dentist, was hospitalized because of fever and myalgia of 10 days' duration. Abdominal ultrasonography showed non-septated, 3.8×4.6 ㎝ sized abscess in the segment 6/7 of the liver. E. corrodens was isolated from aspiration of liver abscess. This organism was presumably acquired from his patient's oral cavity during dental procedure. We hope that increased awareness to E. corrodens will raise the index of suspicion, and contribute to optimal management of these infections, minimizing the significant morbidity associated with this organism.