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박명윤,최진형,조승호,이원준,한상민 순천향대학교 부설 산업기술연구소 2021 순천향 산업기술연구소논문집 Vol.27 No.2
Wireless Power Transfer(WPT) is very popular because it can wirelessly supply energy to the sensor. The Dual-Band rectenna with ISM matching(2.4-2.48GHz/5.72-5.82GHz) is presented. The dual-band rectenna system consists of harmonics rejection filter, dual-band impedance matching circuit, voltage multiplier rectifier. Especially, for system efficiency, it is important to perform dual-band matching to transfer maximum power to the rectifier. Dual-Band Rectenna can harvest more power than single-band rectenna and be high performance in communication environment using ISM band such as Wi-Fi, Bluetooth existing several-tone signal.
Immobilization with Ketamine HCI and Tiletamine-Zolazepam in Cynomolgus Monkeys
Myung-cheol Kim,Sung-hyeok Hong,Soo-jin Lee,Young-suk Kim,Jae-il Lee 대한수의학회 2003 Journal of Veterinary Science Vol.4 No.2
with Ketamine HCl and Tiletamine-Zolazepam in Cynomolgus MonkeysJae-il Lee, Sung-hyeok Hong, Soo-jin Lee, Young-suk Kim and Myung-cheol Kim*Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, KoreaReceived March 4, 2003 / Accepted July 2, 2003J. Vet. Sci. (2003), 4(2), 187-191JOURNAL OFVeterinaryScience*Corresponding author: Myung-cheol Kim Laboratory of Veterinary Surgery, College of Veterinary Medicine, Chungnam National University, Daejeon 305-764, Korea Tel: +82-42-821-6757, Fax: +82-42-822-4216 E-mail: mckim@cnu.ac.kr
성하정,권오경,방명주,곽형일,이진영,신대희,박대규,정규혁,윤효인,조명행 성균관대학교 약학연구소 1998 成均藥硏論文集 Vol.10 No.1
Single and 4 weeks oral administration of New wonbangwoohwangchungsimwon (NSCH) which was used l-muscone as substitutive material of musk, to beagle dogs of both sexes were performed to investigate both acute and subacute toxicity. Beagle dogs (3 males and 3 females) in acute experiments were administered orally with sinlge dose of 2,000 ㎎/㎏ and groups of 9 male and 9 female beagle dogs in subacute experiments were given daily different dosage of NSCH, 160 ㎎/㎏/day (low dosage group), 400 ㎎/㎏/day (middle dosage group), 1,000 ㎎/㎏/day (high dosage group) once a day for 4 weeks by oral route according to the Established Regulation of Korea Food and Drug Administration (1996. 4. 16). LD_50 value for beagle dogs was more than 2,000 ㎎/㎏ per oral for both male and females. In animals administered with NSCH, there were neither dead animals nor significant changes of body weights. In addition, no differences were found between control and treated groups in clinical sign, urinalysis, eye examination, hematology, serum chemistry, organ weight and other fingings. No histological lesions were observed in both control and treatment groups. Above data strongly suggset that NSCH in beagle dogs is considered to be safe.
허우명,이상균,권상용,김동진,김범철 江原大學校 附設 環境硏究所 2001 環境硏究 Vol.18 No.-
Water quality and pollution state of Lake Chungcho were evaluated during three years from 1998 to 2000. We surveyed physicochemical parameters, and TSI(trophic state index) was calculated using TP, Chl. a, and SD(secchi disc transparency) data of growing season average. Water samples were collected bimonthly except freezing season. During the study period, total annual precipitation in 1998, 1999 and 2000 year was 1,797, 1,722 and 1,345 mm, respectively. Salinity and conductivity were high (29.3±5.5 ppt, and 45,105±7,585 μS/cm) then other lagoons in the Eastern Coast of Korea. Chemocline was formed by salinity at 0.5~1.5m water depth. As a result of this, DO concentration of hypolimnion was below 3.0 mgO₂/L. Especially, when intense chemocline was formed, temperature of hypolimnion was higher than epilimnion. Secchi disc transparency, chlorophyll a, and COD were 0.8±0.3m, 15.7±20.7 mg/㎥, and 3.1±0.8 mgO₂/L, respecively. Most of TN/TP ratios below 20, but concentration of TN and TP was high. Values of TSI ranged between 59 and 77, indicating a eutrophic condition in this system.
송경진,신성진,황병연,박명식 대한골절학회 2003 대한골절학회지 Vol.16 No.2
목 적: 저자들은 제3형 개방성 경골 골절로 수술적 치료를 시행한 환자의 결과를 분석하여 이에 대한 치료 지침을 제시하고자 한다. 대상 및 방법: 최근 7년간 본원에서 치료한 환자 42례를 대상으로 하였으며 연령 분포는 15세에서 76세로 남자가 35례, 여자가 7례였으며, 골절의 분류는 Ⅲa형 14례, Ⅲb형 20례, Ⅲc형 8례였다. 최종 기능적 평가는 Tucker의 분류법을 사용하였다. 결 과: 골 유합 기간은 Ⅲa이 9.2개월, Ⅲb형11.0개월, Ⅲc형이 13.8개월이었고 치료 기간 중 회전 피판 이식술과 유리 피판 이식을 시행하였으며 Ⅲc형에서는 골 연장술을 시행하였다. 기능적 평가로는 Ⅲc형로 갈수록 불량하였다 결 론: 비활성 조직의 충분한 제거, 노출 골편의 조기 피복 후 Ⅲa형에서는 골수강내 금속정을 이용한 견고한 내고정으로 좋은 결과를 얻을 수 있고 Ⅲb와, Ⅲc형에서는 외고정 기구를 사용하여 견고한 고정력을 얻을 수 있을 것으로 사료된다. Purpose: The purpose of this study was to analyze the functional outcome and propose the guidelines in the surgical treatment of open type Ⅲ tibial fracture. Materials and Methods: We have analyzed the treatment results of 44 cases; age was ranged from 15 to 76 years, and there were 35 males and 7 females. The type of fracture according to the classification by Gustilo revealed typeⅢa 14 cases, type Ⅲb 20 cases and type Ⅲc in 8 cases. We analyzed functional outcome according to the classification of functional result by Tucker. Results: The average union time of type Ⅲa was 9.2 months, Ⅲb 11.0 months, and Ⅲc was 13.8 months. The rotational flap and free flap were done during treatment and bone lengthening especially in type Ⅲc. Functional results were poor especially in type Ⅲc. Conclusion: Debridgement of devitalized tissue, early soft tissue coverage and sufficient stability using intramedullary nails will be necessary in type Ⅲa fracture. Rigid external fixation, early soft tissue coverage by rotational muscle flap and free flap reduced infection rate with satisfactory functional outcome especially in type Ⅲb and Ⅲc fractures.