풍차형 초음파 전동기의 회전자에 인가된 힘이 회전특성에 미치는 영향

김영균,김진수 한국전기전자재료학회 2000 전기전자재료학회논문지 Vol.13 No.5

The ultrasonic motor have recently begun to be used for certain unique practical utilizations in the fields of industrial medical consumer and automotive applications. Ultrasonic motor stimulated to ultrasonic oscillations by piezoelectrics to drive a rotor via friction contact. The metal and ceramic composite component was used as the stator element to generate ultrasonic vibrations. The ultrasonic motor used here was the windmill type ultrasonic motor operated by single-phase AC source. The windmill type ultrasonic motors has only three components; a stator element of two windmill shape slotted metal endcaps a rotor and a bearing. In this paper a prototype motor with 11.35 mm diameter was fabricated then relationship between the pressing force applied to a rotor and the rotation characteristic of windmill type ultrasonic motor are investigated when stator’s slots was changed from 4, 6, 8 and thickness changed from 0.15, 0.20 mm, respectively. Optimum pressing force applied to a rotor in the six stators was 1.2 mN.

패키지 딜 방식의 해외 에너지자원 획득에 관한 플랜트EPC기업참여 촉진방안연구

김영균,문선애,문승재,이재헌,유호선,Kim, Young-Kyun,Moon, Sun-Ae,Moon, Seung-Jae,Lee, Jae-Heon,Yoo, Hoseon 한국플랜트학회 2009 플랜트 저널 Vol.5 No.2

Promoting policy to involve plant EPC companies for package deal has been studied to acquire overseas energy resources. The effectiveness of the package deal with the plant EPC companies has not been successful because the participation of the plant EPC companies is very rare. It is difficult for the plant EPC companies to join the package deal due to the lack of the fully responsible organization to support the plant EPC companies participating in a package deal. The followings are suggested as the ways to promote the participation of the plant EPC companies for package deal in this study; 1) financial support of the government for plant EPC companies 2) political support of the government for plant EPC companies 3) specialization of the advanced countries for public-private cooperation.

"상한론(傷寒論)"에 수록된 탕제(湯劑)의 전탕법(煎湯法)에 관한 연구

김영균,조수인,Kim Young-Kyun,Cho Su-In 대한한의학방제학회 2000 大韓韓醫學方劑學會誌 Vol.8 No.1

This is a study on the methods of decocting prescriptions in SANGHANRON (傷寒論), and after this, numbers of results have been obtained. SANGHANRON was written by Chang-Ki (張機) in the 2nd century, so it reflexes the usage of prescriptions of previous age indirectly. And gave affects on the methods of decocting prescriptions to the oriental medicine doctors of next generation.Berore Han-DYnasty(漢代), there were not so many publications connected with Oriental Medicine. Besides, some books couldn't hand down to next generation due to the gap of time and space. As time goes by, letters in medical books changed little by little, so contents connected with decocting methods changed too. The effects of decoction and herb tea can be changed by the flexibility of methods of decocting medicines, so we have to decide what kinds of decocting methods should be taken and adapted to patients by the most effective way.In SANGHANRON, there are many kiny kinds of boiling methods, so DHAMG-Ki selected the most appropriate method considering deree and position of disease and condition of patient. But nowadays, due to inconvenient procedure of boiling and taking medicines, some methos are not in common in clinical medicin. So this study was started to look back upon the changes of decocting prescriptions and gave deffort to find out the propriety of variation of boiling prescriptions.The common method of decocting prescriptions in SANGHANRON is boiling down all the herbs at the same time. Except the commom method, there are some kinds of other methods - boiling down twice the prescription, boiling down some special herbs earlier of later than other herbs, complicated or special boiling methods of extract, etc. These kinds of decoting methods simplified as time pass by, but this expected therapeutic value. So we have to distinguish the methods -though complicated and troublesome- in clinical medicine to make perfection more perfect in treating patients, and further studies have to be followed to prove the propriety of these complicated methods.

전립선암 - 조기발견이 중요

김영균 한국만성질환관리협회 1996 월간성인병 Vol.187 No.-

전립선비대증 진단평가

김영균 한국만성질환관리협회 1996 월간성인병 Vol.186 No.-

Fe-14Cr계 페라이틱 산화물 분산 강화강의 고온 압축 및 크리프 특성에 미치는 열처리의 영향

김영균,주연아,박종관,김휘준,공만식,이기안 대한금속·재료학회 2017 대한금속·재료학회지 Vol.55 No.12

This study investigated the microstructure and the ambient-elevated temperature compression and elevated temperature creep properties of Fe-14Cr ferritic ODS steel manufactured by mechanical alloying (high energy ball milling) and hot extrusion processes. Initial microstructural observation of the as-extruded material identified elongated grains in the direction of extrusion; however, some recrystallization and grain growth were observed in the heat-treated material. The average grain sizes of the as-extruded material and heat-treated material were 0.4 and 1.1 μm, respectively. In addition, the heat treatment resulted in the increase in number density and the decrease in size of the nanocluster. A room temperature compression tests confirmed the heat-treated materials (1457 MPa) had relatively higher yield than the as-extruded material (1377 MPa), and a general tendency was observed that the difference in yield strength decreased as temperature increased. Furthermore, elevated temperature compressive creep tests confirmed that the heat-treated material had relatively greater creep resistance compared to the as-extruded material at all stress levels.

전립선 질환

김영균 한국만성질환관리협회 1996 월간성인병 Vol.185 No.-

경조직 결손 수복을 위한 새로운 생체재료의 개발

김영균 대한치과의사협회 1998 대한치과의사협회지 Vol.36 No.4

Temporomandibular Joint Disorder and Occlusal Changes: Case Reports

김영균 대한치의학회 2018 Journal of korean dental science Vol.11 No.1

Occlusion may change spontaneously but dental treatment or trauma in the patients with temporomandibular disorders (TMDs) may also alter occlusion. This report presents three cases displaying occlusal changes. Review of literature emphasizes the significance of TMD treatment. Conservative treatment modalities such as counseling, medication, physical therapy and splint therapy may be selected as initial treatment options. Irreversible or invasive treatment, such as orthodontic, prosthodontic, and occlusal adjustment should not be attempted early. In case there is no response to conservative treatment, joint injection, muscle injection, arthrocentesis or arthroscopic surgery might be performed.

제주특별자치도 조직관리 개선방안(상(上))

김영균 한국자치발전연구원 2010 자치발전 Vol.2010 No.12