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박형욱,김용기,임동명,윤신의,최봉남 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1
The authors observed the clinical findings of 99 cases of traumatic drum perforations, who visited the department of otolaryngology of Chosun University Hospital and KwangYang Hospital from January 1988 to August 1991 The results obtained were as follows; 1) As an etiologic factor, the indirect trauma occupies the most case (79.8%), out of which the most cases is by assault. 2) Age distribution indicates 30 decade(32.3%) and 20 decade(26.3%) in the declining order and sex distribution indicates male to female is 1;1.3. 3) On occupation, house wife is the most frequently involved (35.4%) and officials & students are in the next order. 4) Most common complaint is Hearing impairment and the next complaints are tinnitus, otalgia and hemorrhage in order. 5) The most frequent site of perforation is the central portion of anteroinferior and posteroinfehor quadrant, Gradel in size and triangular shape are common. 6) Seasonal variation indicates that the most frequent occurence of perforation is on summer. 7) Average 25-35㏈ of hearing loss is most common, and the degree of hearing loss is well correlated with the size of perforation. 8) Two way of therapeutic measure are compared. a. stimulating with trichloroacetic acid ; spontaneously healing in 22 cases (22.2%) b. closing procedure with paper patch ; healing in 68 cases (68.7%) 9)The overall healing time is within 2 months in the most of case (about 80%).
( Ki Won Kim ),( Kyoung Mi Kim ),( Jung Woo Park ),( Hyun Jae Jung ),( Jee Young Han ),( Joon Mee Kim ),( Jee Hyun Park ),( Sung Ook Hwang ),( Woo Young Lee ),( Eun Seop Song ) 대한산부인과학회 2011 Obstetrics & Gynecology Science Vol.54 No.7
To know the correlation of punch-biopsy proven cervical intraepithelial neoplasia (CIN) 3 with the results of cone and hysterectomy. Methods We reviewed the medical records from 1999 to 2008, retrospectively, at a single institution. We checked age, cone and hysterectomy biopsy results, preoperative cervical smear results as well as human papillomavirus results. Results There were 104 patients whose punch biopsy results were CIN 3. 59 (56.7%) patients underwent cone and 45 did hysterectomy after punch biopsies. Cone found 6.8% of cervical cancer. Among patients undergoing hysterectomy without cone, 8.9% had cervical cancers. There were a lot of inflammations, atypical squamous cells of unknown significance, low-grade squamous intraepithelial lesion done as a Pap results just before cone. The positive rate of HPV was 80.0%. There were 5.1% of underestimated and 6.8% of over-estimated results according to the cone results, and 6.7% of under-estimated and 8.9% of overestimated according to the hysterectomy results. Conclusion Through conization, 93.2% of the patients whose punch biopsy results were CIN 3 had CIN and did not need hysterectomy, and 6.8% had cervical cancers and might need further treatment. Through hysterectomy, 91.2% had CIN and might undergo overtreatment.
Analysis of Simplified SB-ADI Scheme for Two-Dimensional Maxwell's Equations
Ki-Bok Kong,Seong-Ook Park IEEE 2009 IEEE antennas and wireless propagation letters Vol.8 No.-
<P>This letter represents a simplified sampling biorthogonal alternating-direction implicit (SSB-ADI) method based on the sampling biorthogonal time domain (SBTD) algorithm. Two sampling functions with different orders for sampling biorthogonal method are used to display spatial discretization. Dispersion and stability analyses are presented. It is shown through a numerical simulation that SSB-ADI reduced the CPU time and memory compared to the SB-ADI method.</P>
Pictorial Review of Mediastinal Masses with an Emphasis on Magnetic Resonance Imaging
Park Jin Wang,Jeong Won Gi,Lee Jong Eun,Lee Hyo-jae,Ki So Yeon,Lee Byung Chan,Kim Hyoung Ook,Kim Seul Kee,Heo Suk Hee,Lim Hyo Soon,Shin Sang Soo,Yoon Woong,Jeong Yong Yeon,Kim Yun-Hyeon 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.1
Magnetic resonance imaging (MRI) has become a crucial tool for evaluating mediastinal masses considering that several lesions that appear indeterminate on computed tomography and radiography can be differentiated on MRI. Using a three-compartment model to localize the mass and employing a basic knowledge of MRI, radiologists can easily diagnose mediastinal masses. Here, we review the use of MRI in evaluating mediastinal masses and present the images of various mediastinal masses categorized using the International Thymic Malignancy Interest Group’s three-compartment classification system. These masses include thymic hyperplasia, thymic cyst, pericardial cyst, thymoma, mediastinal hemangioma, lymphoma, mature teratoma, bronchogenic cyst, esophageal duplication cyst, mediastinal thyroid carcinoma originating from ectopic thyroid tissue, mediastinal liposarcoma, mediastinal pancreatic pseudocyst, neurogenic tumor, meningocele, and plasmacytoma.
Analysis of the small band-rejected antenna with the parasitic strip for UWB
Kim, Ki-Hak,Park, Seong-Ook IEEE 2006 IEEE transactions on antennas and propagation Vol.54 No.6
A novel band-rejected ultrawideband antenna with one parasitic strip is presented in this paper. It is designed to work on a substrate FR4 that has a thickness of 1 mm and relative permittivity of 4.6, and to operate from 3 to 17 GHz. The proposed antenna is fed by microstrip line and utilizes the parasitic strip to reject the frequency band (5.15-5.825 GHz) limited by IEEE 802.11a and HIPERLAN/2. The size of the antenna is 20×20 mm<SUP>2</SUP> and this antenna has good radiation characteristics. Effects of varying the location and length of the parasitic strip and the structure of the ground and monopole patch on the antenna performance have also been studied.