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미세각막절개도 헤드의 선택을 통한 맞춤식각막절개방식의 라식
강민호,송유미,강성민,박영숙,최철영,이윤정,이병로.Min Ho Kang. M.D.. Yoo Mi Song. M.D.. Sung Min Kang. M.D.. Young Sook Park. M.D.. Chul Young Choi. M.D.. Yoon Jung Lee. M.D.. Byung Ro Lee. M.D. 대한안과학회 2006 대한안과학회지 Vol.47 No.2
Purpose: To compare the intraoperative and postoperative complication rates and visual outcomes with M2 130 head (thick flap group) and M2 110 head (thin flap group). Methods: One-hundred-ninety-five eyes of 104 patients who underwent LASIK with the Moria M2 microkeratome and Allegretto-wave laser were reviewed retrospectively. Selection of M2 heads was based on preoperative pachymetry and estimated ablation depth. Intraoperative and postoperative flap-related complications, mean postoperative uncorrected visual acuity (UCVA), and mean spherical equivalent (MSE) were evaluated and compared. Results: Mean follow-up was 8.1 months. The number of eyes, preoperative MSE and mean corneal thickness of M2 130 were 115, -4.04±1.63diopter (D) and 549.40±39.16??m, and 85, -6.61±3.43D and 525.16±24.53 ?m, respectively, in the 110 head group. Mean UCVA and MSE at postoperative 1 week, 3 months and 6 months were 1.00±0.18, -0.26±0.49D; 1.07±0.68, -0.40±0.51D; and 1.01±0.22, -0.51±0.50D, respectively, in the 130 head group, and 0.90±0.23, -0.46±1.02D; 0.91±0.23, -0.67±0.79D; 0.85±0.46, -0.75±0.88D, respectively, in the 110 head group. There were no significant differences in intraoperative and postoperative flap-related complication rates between the two groups (p=0.316). There were no statistically significant differences in postoperative mean UCVA or MSE between the two groups (p>0.05), except for MSE at the third and sixth postoperative months (p=0.005, 0.013). Conclusions: Proper selection of M2 heads by preoperative pachymetry allowed for an adequate residual stroma bed with good visual outcome. Utilizing one single microkeratome and switching between two heads was advantageous and cost-effective.
토공사 환경오염물질 부하량 및 공사비를 이용한 장비조합방법 연구
강민호,박형근,Kang, Min-Ho,Park, Hyung-Keun 대한토목학회 2013 대한토목학회논문집 Vol.33 No.3
1997년 "기후 변화에 관한 국제연합 규약의 교토의정서"가 채택된 이후 우리나라를 비롯한 세계의 여러 나라에서 이산화탄소를 포함한 온실가스 배출을 줄이기 위한 노력을 진행해 왔다. 각 산업별로 온실가스 배출을 저감시키는 산업 구조로 개편 및 녹색 기업으로 체질 개선에 힘쓰고 있으나 타 산업에 비하여 건설 산업은 온실가스 배출의 효율적인 관리를 위한 정확한 배출량 저감을 위한 논의가 미흡한 상황이며 오히려 환경을 파괴시키는 산업이라는 오명을 가지고 있는 실정이다. 우리나라는 경제규모에 비해 환경오염물질 배출량이 많으며 이는 에너지 다소비 업종의 비중 증가에 따른 것이다. 이에 따라 에너지 다소비업종 중 하나인 건설관련 공사에 대한 효율적인 에너지 절약이 이루어지지 않은 문제점이 대두되고 있다. 뿐만 아니라 근래에는 대규모 건설이 많으므로 에너지 절감효과를 갖기 위해서는 건설공사의 전과정(Life Cycle) 중 시공단계에서 발생하는 에너지소비량, 환경오염물질 배출량, 환경비용 등 기본적인 데이터베이스 및 활용방안 개발이 필요하다. 그러나 건설현장 특성상 정량화가 어렵다는 이유 등으로 친환경 건설에 관한 연구는 대부분 구조물 사용 및 유지 보수 단계에 집중되어 있다. 이에 본 연구에서는 지식경제부와 환경부에서 제시하는 LCI DB를 활용하여 굴착작업 시 발생하는 환경오염물질 배출량을 산출하고 환경오염물질별 환경비용을 환산하여 토공사에 대한 환경경제성을 평가하고자 한다. Great efforts have been made worldwide to reduce the Green House Gas (GHG) emission following the "Kyoto Protocol" declared during the United Nations Framework Convention on Climate Change in 1997. Many industries have restructured to meet the standard set by the Protocol. However, no clear guidance has been established for the purpose of reducing the GHG emission in construction industry. In addition, no significant effort has been made to conserve the energy during construction activities. For more effective energy saving in construction industry, it is essential to collect data about energy consumption, quantity of environmental emissions and costs. However, most studies on sustainable construction have been concentrated on the use of equipment, maintenance and repair works during construction due to the difficulties of collecting such data. This study suggests a method to select the most environmentally friendly equipment combination for earthwork with comparing environmental loads and costs using the database of Life Cycle Inventory in the Ministry of Knowledge Economy and Ministry of Environment of Korea.
간헐외사시에서 수술직후 안구정렬 상태에 따른 감각 기능의 변화
강민호,신선영.Min-Ho Kang. M.D.. Sun-Young Shin. M.D 대한안과학회 2005 대한안과학회지 Vol.46 No.1
Purpose: This study was designed to determine which sensory test best reflects the improvement of binocular function according to the surgical outcome of intermittent exotropia Methods: We examined the visual acuity, refractive error, angle of exodeviation, fusional status with the Worth-4-dot, Bagolini tests and stereoacuity with the Titmus test preoperatively in 61 intermittent exodeviation patients who had undergone the bilateral lateral rectus recession operation from February 2002 to 2003 July. We compared the binocularity tests between the two groups: esodeviated and orthotropic or exodeviated. Results: The average improvement time of the Bagolini, Worth 4 dot and Titmus tests was 0.54±1.2, 2.03±2.90, 1.12±2.1 weeks, respectively. Although the shortest time was for the Bagolini test (p=0.001), the Titmus test was more sensitive. Conclusions: The high variability of the binocularity tests should be remembered and take into account when we interpret the test results.
픽의 제 1법칙을 사용한 발한량 측정 방법에 관한 연구
강민호(Min-Ho Kang),박준호(Jun-Ho Park),정동진(Dong-Jin Jung),조종만(Jong-Man Cho) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.2
본 연구에서는 땀의 발한량을 실시간으로 측정하기 위한 방법을 확인한다. 땀의 주 성분인 수분이 증발하는 것을 측정하기 위해 Fick"s first law of diffusion을 중심으로 다수의 검증된 이론을 사용하였다. 내경 30mm의 아크릴 원통 내부에 2개의 온습도센서를 사용하여 두 지점의 온도 및 상대습도를 측정하였으며, 이를 기준으로 수분의 확산량을 계산하였다. 계산값의 비교를 위해 수분의 실제 증발량을 마이크로밸런스를 사용하여 측정하였다. 실험은 마이크로밸런스 측정값을 기준으로 16.67~123.33 ㎍/min 범위의 증발량을 측정하였다. 총 6개의 그룹에서 측정하였으며, 각 그룹별 5회의 실험을 반복하여 평균값을 비교하였다. 측정값대 계산값의 비율은 0.97~1.10로 나타났으며, 따라서 이 방법은 유효하다 판단된다.
HVDC Cable Acessory용, EPDM/n_SiC/μ_SiC/Silica Kaolinite Composites의 전기적 특성연구
강민호(Min-Ho Kang),박정복(Jung-Bok Park),김형석(Hyoung-Seok Kim),남인석(In-seok Nam),정민성(Min-Seong Jung),박건주(Geon-Ju Park),장홍준(Jang Hong Jun),허인회(Hur In Hai),박재준(Jae-Jun Park),이동윤(Lee Dong Yun) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.7
In the HVDC Cable Accessory connection, there are a lot of space charges at the interface between the cable insulation and the connection part insulation, and at the interface between metals and polymers. It is also reported that insulation and accessory insulation have a large difference between the ratio of the dielectric constant and electrical conductivity of the cable and accessory insulation. And this space charge can strengthen and distort the local electric field near the interface. For that reason, the surface of SiC (Silicon Carbide), a semiconductive inorganic material based on EPDM (ethylene propylene diene terpolymer), was modified to strengthen the chemical reaction and interface. EPDM/Nano SiC/Micro SiC Mixture Composites were prepared and the properties of electrical insulation, electrical conductivity, and thermal conductivity were studied by mixing nano SiC and micro SiC.Moreover, in order to increase the mechanical tensile strength in the optimal state of electrical conduction and electrical insulation, the electrical and mechanical properties were studied by mixing Akitifit (Silica Kolinite), a surface-modified inorganic material.
강민호 ( Min Ho Kang ),김배환 ( Bae Whan Kim ),윤승욱 ( Seoung Wook Yun ),이순일 ( Soon Il Lee ),신정은 ( Jeong Eun Shin ),남궁환 ( Goong Hwan Nam ),이원애 ( Won Ae Lee ) 대한내과학회 2008 대한내과학회지 Vol.74 No.6
The present research was conducted through the research fund of Dankook University in 2006. Rectal recurrence of gastric cancer is uncommon. A few cases have been reported, with the majority of them associated with peritoneal recurrence. A 71-year-old man visited our hospital complaining of bowel habit changes and fecal incontinence. He had undergone radical subtotal gastrectomy and postoperative adjuvant chemotherapy for advanced gastric cancer 9 years earlier. Colonoscopy showed a rigidly constricted and erythematous rectum. Abdominopelvic CT showed diffuse rectal wall thickening with enhancement. PET-CT showed a hot uptake in the corresponding area on abdominopelvic CT scan, with no evidence of distant metastasis. We performed transanal full thickness biopsy and confirmed a diagnosis of adenocarcinoma pathologically similar to the former gastric cancer. The patient was diagnosed with solitary rectal recurrence simulating linitis plastica, without gastric remnant recurrence. We report this case with a review of the literature.(Korean J Med 74:680-684, 2008)