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강길원,박형근,김창엽,김용익,하범만,Kang, Gil-Won,Park, Hyoung-Keun,Kim, Chang-Yup,Kim, Yong-Ik,Ha, Beom-Man 대한예방의학회 2000 예방의학회지 Vol.33 No.4
Objectives : To evaluate the impacts of the DRG payment system on the behavior of medical insurance claimants. Specifically, we evaluated the case-mix index, the numbers of diagnosis and procedure codes utilized, and the corresponding rate of diagnosis codes before, during and after implementation of the DRG payment system. Methods : In order to evaluate the case-mix index, the number of diagnosis and procedure codes utilized, we used medical insurance claim data from all medical facilities that participated in the DRG-based Prospective Payment Demonstration Program. This medical insurance claim data consisted of both pre-demonstration program data (fee-for-service, from November, 1998 to January, 1999) and post-demonstration program data (DRG-based Prospective Payment, from February, 1999 to April, 1999). And in order to evaluate the corresponding rate of diagnosis codes utilized, we reviewed 820 medical records from 20 medical institutes that were selected by random sampling methods. Results : The case-mix index rate decreased after the DRG-based Prospective Payment Demonstration Program was introduced. The average numbers of different claim diagnosis codes used decreased (new DRGs from 2.22 to 1.24, and previous DRGs from 1.69 to 1.21), as did the average number of claim procedure codes used (new DRGs from 3.02 to 2.16, and previous DRGs from 2.97 to 2.43). With respect to the time of participation in the program, the change in number of claim procedure codes was significant, but the change in number of claim diagnosis codes was not. The corresponding rate of claim diagnosis codes increased (from 57.5% to 82.6%), as did the exclusion rate of claim diagnosis codes (from 16.5% to 25.1%). Conclusions : After the implementation of the DRG payment system, the corresponding rate of insurance claim codes and the corresponding exclusion rate of claim diagnosis codes both increased, because the inducement system for entering the codes for claim review was changed.
Influence of Growth Temperature on the Characteristics of Single-Junction p—i—n InGaP Solar Cells
Jung, Sang Hyun,Kim, Youngjo,Kim, Chang Zoo,Jun, Dong-Hwan,Kim, Kangho,Shin, Hyun-Beom,Choi, JeHyuk,Park, Won-Kyu,Lee, Jaejin,Kang, Ho Kwan American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.4
<P>Single-junction p-i-n InGaP solar cells are grown at various temperatures from 620 to 700 degrees C by low pressure metalorganic chemical vapor deposition on GaAs (001) substrates. The short circuit current density of the p-i-n InGaP solar cells increases by up to 38.8% when the growth temperature is reduced from 700 to 620 degrees C, while the open circuit voltage and fill factor show relatively small changes. The external quantum efficiency, especially, in the wavelength regime below 500 nm, is improved for the p-i-n InGaP solar cells grown at lower temperatures. The improvement might be attributed to the reduced absorption loss of the photons in the n-InGaP emitter region. The highest conversion efficiency of 11.01% is attributed from the p-i-n InGaP solar cell grown at 640 degrees C. Electron mobility and concentration of undoped InGaP layers are investigated as a function of the growth temperature and correlated with the p-i-n InGaP solar cell performance.</P>
전하룡(Ha-Ryong Jeon),김종원(Jong-Won Kim),권호범(Ho-Beom Kwon),이동환(Dong-Hwan Lee),홍종락(Jong-Rak Hong),김창수(Chang-Soo Kim) 대한구강악안면외과학회 2006 대한구강악안면외과학회지 Vol.32 No.3
Purpose: This study presents radiographic and laboratory analysis and comparison of bone resorption rate of grafted endochondral bone and intramembranous bone on the aspect of height and volumetric change. Patients and Methods: 18 partially edentulous patients who needed alveolar ridge augmentation for implant placement during the years 2002 to 2004 were selected for this study. Group A consisted of 5 males & 3 females who were treated with intraoral(intramembranous) bone and Group B consisted of 8 males & 2 females who were treated with iliac(endochondral) bone. Non-standard periapical X-ray was taken at day 1, 2 month, 4 months, 8 months after the surgery. Resorption rate of grafted bone were measured on these X-rays and compared. Also we calculated volume of grafted bone with models which was fabricated at 1.5 months, 6 months. Results: There was bone resorption in both groups. Group B showed more bone resorption than Group A. In Group A, the resorption rate according to the radiographic measurements was 9.81 %, and resorption rate according to volumetric measurement was 16.5 %. In group B, the resorption rate according to the radiographic measurements was 15.9 %, and resorption rate according to volumetric measurement was 30.6 %. Significant difference is on radiographic resorption of post-op 2, 4, 8 months on two groups (P < 0.05). Also significant difference is on volume resorption on two groups (P < 0.05) Conclusion: We found that more bone resorption occurred with iliac(endochondral) bone and when we use intraoral bone, that bone can maintain their vitality for alveolar ridge augmentation.
Contained Gallbladder Rupture in Two Dogs with Small-Sized Gallbladder
Chang-Hwan Moon,Hee-Jin Kim,Won-Jong Lee,Young-Sam Kwon,Jae-Min Jeong,Dae-Hyun Kim,Hae-Beom Lee,Seong Mok Jeong The Korean Society of Veterinary Clinics 2023 한국임상수의학회지 Vol.40 No.6
This report presents two rare cases of gallbladder rupture in dogs with small gallbladders that did not result in bile leakage and their subsequent surgical treatment. The report includes a 5-year-old spayed female Chihuahua weighing 3.5 kg and a 9-year-old castrated male Poodle weighing 5.3 kg. Both dogs had elevated liver enzyme levels on blood chemistry. However, only the second dog (2) (Poodle) presented with hyperbilirubinemia and jaundice, whereas the first dog (Chihuahua (1)) did not display any specific clinical signs. Diagnostic imaging revealed a small gallbladder in both dogs, and the dogs were diagnosed with cholecystolithiasis (1) and extrahepatic biliary tract obstruction (2). No bile leakage-related abdominal effusion was observed. Gallbladder rupture and adhesion to the adjacent tissues were confirmed during cholecystectomy.
A case report of angioleiomyoma on vulva
( Chang Min Kim ),( Hee Won Jang ),( Jae Beom Park ),( Jung Jin Shin ),( Sang Wook Son ),( Il Hwan Kim ) 대한피부과학회 2015 대한피부과학회 학술발표대회집 Vol.67 No.1
Angioleiomyoma is an uncommon benign tumor which arise from vascular smooth muscle. It usually has vascular structures surrounded by proliferated smooth muscle with well-demarcated nodule microscopically. Affected age of angioleiomyoma is between 30 to 50 decades and it is usually seen in lower leg of female. A 40-year-old female patient presented with violaceous nodule on right labium majora which appeared 4 month prior to the visit. The patient had previously visited other hospital and performed punch biopsy of the lesion. The initial histopathologic examinations revealed irregular proliferation of atypical vascular structrues in the dermis. Kaposi sarcoma was first suspected and HHV-8 immunohistochemistry was performed, but with negative result. Under the final impression of hemangioendothelioma and angiosarcoma, patient was refered for further evaluation. Secondary pathology report performed by our hospital could only suggested vascular tumor and total excision of the lesion was recommended. The patient thereafter underwent excisional surgery, and final pathologic report was consistent with angioleiomyoma. There are numerous reports of angioleiomyoma of skin arising in various parts of body, such as ear helix, upper lip, and finger. However, aside from a single study reporting angioleiomyoma of vulva, there is no previous report of the disease in labia majora. Herein we report a rare case of angioleiomyoma arising in labia majora.