http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Se/CS₂용액으로 처리한 n-GaAs 표면의 Photoreflectance 특성에 관한 연구
장광수,김인수,배인호,한병국,이정열 嶺南大學校 基礎科學硏究所 1997 基礎科學硏究 Vol.17 No.-
The surface of of n-GaAs(100) was treated using 1.5㎎/100ml solution of Se/CS₂. The passivation of the surface of this sample was investigated by photoreflectance(PR) experiment. After the surface treatment, the samples were annealed between 300 to 700 ℃ in a N₂atmosphere for 10 min. From the obtained Franz-Keldysh oscillations, we have evaluated the surface electric field(E?) and built-in voltage(V??). The density of surface states(Q??) and surface Fermi level(E??) of n-GaAs treated with CS₂and Se/CS₂solution were determined 1.78 ×10??㎝?? , 1.81×10?㎝? and 0.734 eV, 0.737 eV, respectively. After annealed at 600 ℃, These values were about 45% and 13% smaller than those in unannealed samples. It has found that the passivation of surface occured when the surface of the sample had been treated with Se/CS₂ solution and annealed from 400 to 600 ℃. This is ascribed to effects due to activation of elemental Se on the surface.
A Study on the B-Cl Symmetric Stretching Vibration-Rotation Spectra of Gaseous HBCl_2 Molecule
Yoo, Hean Jung,Han, Gwang Lae,Lee, Kuk Haeng,Suh, Hyoack Choon 全北大學校 科學敎育硏究所 1989 과학과 과학교육 논문지 Vol.14 No.-
TEA CO_2레이저를 이용하여 BCl_3와 H_2/D_2 기체로부터 HBCl_2를 합성한 후 분해능 0.12㎝^-1의 FT―IR 스펙트럼을 얻었다. B―Cl대칭 뻗침 v_2의 진동―회전값을 얻었으며 H^11BCl_2, D^11BCl_2 및 D^10BCl_2의 기본진동은 각각 734.62, 709.08와 723.15㎝^-1이었다. DBCl_2 분자의 v_1과 2v_s에 대한 Fermi resonance의 기본진동은 1911.05㎝^-1이었다. 바닥상태때의 회전상수값을 마이크로웨이브값과 비교하였으며, 아울러 P. R가지 모양은 전형적인 B형태임을 보여줬다.
족지 주위의 작은 크기의 당뇨 족부 궤양에 대한 외측 상완 유리 피판술
정현균,소광영,국우종,김희동,Jung, Heun-Guyn,So, Gwang-Young,Kuk, Woo-Jong,Kim, Hee-Dong 대한미세수술학회 2008 Archives of reconstructive microsurgery Vol.17 No.1
The purpose of this study was to present the clinical analysis of the results of lateral arm free flap for small sized and infected diabetic foot ulcer around toes. From May 2006 to December 2007, Seven patients were included in our study. Average age was 52.8 years, six were males and one was female. All had infected diabetic foot ulcer and had exposures of bone or tendon structures. Ulcers were located around great toe in four patients, 4th toe in one and 5th toe in two. Three patients had osteomyelitis of metatarsal or phalanx. After appropriate control of infection by serial wound debridement and intravenous antibiotics, lateral arm flap was applied to cover remained soft tissue defects. Posterior radial collateral artery of lateral arm flap was reanastomosed to dorsalis pedis artery of recipient foot by end to side technique in all cases in order to preserve already compromised artery of diabetic foot. All flaps were designed over lateral epicondyle to get longer pedicle and averaged pedicle length was 8 cm. Two cases were used as a sensate flap to achieve protective sensation of foot. All flaps survived and provided satisfactory coverage of soft tissue defects on diabetc foot ulcers. All patients could achieve full weight-bearing ambulation. No patients has had recurrence of infection, ulceration and further toe amputations. There were three complications, a delayed wound healing of flap with surrounding tissue, a partial peripheral loss of flap and a numbness of forearm below donor site. All patients were satisfied with their clinical results, especially preserving their toes and could return to the previous activity levels. Lateral arm free flap could be recommend for infected diabetic foot ulcers around toes, to preserve toes, coverage of soft tissue defect and control of infection with low donor site morbidity.
Ji-Deuk Han,Seong-Ho Cho,Kuk-Won Jang,Seong-Gwang Kim,Jung-Han Kim,Bok-Joo Kim,Chul-Hun Kim 대한구강악안면외과학회 2017 대한구강악안면외과학회지 Vol.43 No.4
This case series study demonstrates the possibility of successful implant rehabilitation without bone augmentation in the atrophic posterior maxilla with cystic lesion in the sinus. Sinus lift without bone graft using the lateral approach was performed. In one patient, the cyst was aspirated and simul-taneous implantation under local anesthesia was performed, whereas the other cyst was removed under general anesthesia, and the sinus membrane was elevated in a second process, followed by implantation. In both cases, tapered 11.5-mm-long implants were utilized. With all of the implants, good stability and appropriate bone height were achieved. The mean bone level gain was 5.73 mm; adequate bone augmentation around the implants was shown, the sinus floor was moved apically, and the cyst was no longer radiologically detected. Completion of all of the treatments required an average of 12.5 months. The present study showed that sufficient bone formation and stable implantation in a maxilla of insufficient bone volume are possible through sinus lift without bone materials. The results serve to demonstrate, moreover, that surgical treatment of mucous retention cyst can facilitate rehabilitation. These techniques can reduce the risk of complications related to bone grafts, save money, and successfully treat antral cyst.
Helicobacter pylori Infection and Peptic Ulcer Disease in Patients with Liver Cirrhosis
( Dong Joon Kim ),( Hak Yang Kim ),( Sung Jung Kim ),( Tae Ho Hahn ),( Myoung Kuk Jang ),( Gwang Ho Baik ),( Jin Bong Kim ),( Sang Hoon Park ),( Myung Seok Lee ),( Choong Kee Park ) 대한내과학회 2008 The Korean Journal of Internal Medicine Vol.23 No.1
Background/Aims: We investigated the prevalence and relationship of peptic ulcer disease and Helicobacter pylori infection to liver cirrhosis. Methods: We examined 288 patients with liver cirrhosis, 322 patients with non-ulcer dyspepsia, and 339 patients with peptic ulcer disease. Rapid urease test and Wright-Giemsa staining were used for diagnosis of H. pylori infection. Results: The prevalence of peptic ulcer disease in patients with cirrhosis was 24.3%. The prevalence of peptic ulcer disease in patients with cirrhosis divided into Child-Pugh classes A, B, and C was 22.3%, 21.0%, and 31.3%, respectively (p>0.05). The prevalence of H. pylori infection in the patients with cirrhosis, non-ulcer dyspepsia, and peptic ulcer without chronic liver disease were 35.1%, 62.4%, and 73.7%, respectively (p<0.001). The prevalence of H. pylori infection did not differ depending on whether there was peptic ulcer (35.6%) or not (34.9%) in patients with liver cirrhosis (p>0.05). The prevalence of H. pylori infection in patients with hepatitis virus-related liver cirrhosis and in the patients with alcohol-related liver cirrhosis was 42.5% and 22.0%, respectively (p<0.001). The prevalence of H. pylori infection in patients with Child-Pugh classes A, B, and C liver cirrhosis was 51.5%, 30.5%, and 20.0%, respectively (p<0.001). Conclusions: Factors other than H. pylori may be involved in the pathogenesis of peptic ulcer disease in the setting of liver cirrhosis.