http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
飮食物쓰레기의 效率的 管理를 위한 物理的 特性 및 處理
권효정,정영헌,김임경,심언봉,오광중 부산대학교 환경문제연구소 2003 環境硏究報 Vol.21 No.-
This study was conducted to manage food wastes in Korea efficiently. We carried out an experiments on food wastes generated from Yeonjae gu, Pusan as a representative boundary according to the measurement of apparent density, generation quantity, physical characteristics, proximate analysis, and elemental analysis as well as drying and carbonizing, and also tested the hazardous materials in fertilizer and compost from public and private recycling center in operation. The purposes of this study are to investigate current status of food wastes recycling methods and facilities, to examine the fuelization of food wastes, and to suggest the cost effective food wastes treatment plans. Based on the results of the analysis of apparent density and water content in food wastes, it was revealed that the apparent density of food wastes was in inverse proportion to the water content. The water content of food wastes was highly influenced by the fruit and vegetables such as watermelons. These results indicate that the food wastes with about 75 ~80wt% initial moisture content should be reduced under 70wt% moisture content by drying process pier to throwing away. Comparing the heating values of the food wastes which were calculated by Dulong's equation and Steuer's equation it was revealed that Steuer's equation(HHV 5,186 kcal/kg, LHV 880 kcal/kg) was more compatible than Dulong's equation(HHV 4,676 kcal/kg, LHV 330 kcal/kg) because the results of proximate analysis for the food wastes were very similar to those of sewage sludges. Additionally, to reduce water contents of food wastes under 60wt% as acceptable water contents for fuelization, it was also found that blending with 25wt% chars made from food wastes was more efficient than the drying of food wastes itself at 105°C, 45minutes in view of completion time. Furthermore, these chars generated from food wastes (about LHV 6,608 kcal/kg) comparable to commercial charcoal(LHV 7,134 kcal/kg) generated from oak trees and lower ash contents(under 15wt% of chars) than those.
원형탈모증 환자에서 병리조직학적 등급과 임상적 예후 인자 및 치료 효과와의 상호 관련성
권오언 ( Oh Eon Kwon ),구본석 ( Bon Seok Ku ),이영규 ( Yeong Kyu Lee ),이채욱 ( Chae Wook Lee ),김기호 ( Ki Ho Kim ) 대한피부과학회 2007 大韓皮膚科學會誌 Vol.45 No.2
Background & Objective: Prognosis of alopecia areata have been attributed to various factors; age of onset, duration before treatment, extent of hair loss, clinical type of alopecia areata, sex, nail changes or accompaniment of atopy. The study on prognostic factors has only been conducted from statistical data of patients and individualized medical conditions. The histopathologic findings of alopecia areata have been investigated by the minute pathologic changes associated with the hair growth cycle in the transverse section. Moreover, these findings were used mainly for diagnostic purpose, but clinical significance of histopathologic severity in prognosis has not been established to date. Methods: A clinical study, including histopathological and clinical evaluation was conducted on 108 alopecia areata patients between July 1997 and August 2005 at the Department of Dermatology, Dong-A University Hospital. The evaluation criteria included; sex, age, age at onset, duration before treatment, clinical types, extent of hair loss, nail changes, accompaniment of atopy, and scalp biopsy finding. The clinical types of alopecia areata were classified as follows; patchy, subtotalis, totalis, and universalis. The extent of hair loss before treatment was classified into 5 grades (S1~S5), according to the method designed by Olsen and Canfield. Clinical improvements after treatment were classified into 5 grades according to degree of regrowth and reduction of the alopecia areata area. Biopsy findings were classified into 4 grades (type I, II, III, and IV) according to classification by Uno and Orecchia. Results: The mean age was 28.6 years, without any sex predominance. The severe histopathologic gradings were significantly associated with early age of onset (p=0.008), a long disease duration before treatment (p=0.003), a greater extent of hair loss (p=0.009), and poor response to treatment (p=0.036). The histopathologic gradings were not significantly associated with sex (p=0.657), clinical types of alopecia areata (p=0.529), nail changes (p=0.746), or accompaniment of atopy (p=0.924). Conclusion: Histopathologic gradings in alopecia areata, using vertical sections are significantly associated with prognostic factors such as age of onset, extent of hair loss, disease duration before treatment, as well as the response to treatment. Therefore we consider that the histopathologic grading system is recommendable as an independent prognostic factor in alopecia areata, in addition to the well-known clinical prognostic factors. They may also be used to predict the response to treatment. (Korean J Dermatol 2007;45(2):111~118)
초기 병변으로 다발성 피부 부종과 림프관내 반지세포 침윤을 보인 전이성 위 선암
권오언 ( Oh Eon Kwon ),구본석 ( Bon Seok Ku ),김대철 ( Dae Cheol Kim ),이채욱 ( Chae Wook Lee ),김기호 ( Ki Ho Kim ) 대한피부과학회 2006 대한피부과학회지 Vol.44 No.5
Signet-ring cells are cells in which the nucleus is crescentically compressed with a cellular border, so that the cell looks like a signet-ring. Many cutaneous signet-ring cell neoplasms originate from the stomach, lung and breast, and these appear to be the most common sites of origin. In skin, the appearance of signet-ring cells within a neoplasm can indicate metastatic adenocarcinoma of the stomach, lung and breast. Thus, the primary origin and other meta-static sites should be evaluated. A 44-year-old man presented with a six month history of cutaneous swelling on the left axillary and left supraclavicular area. Histopathologic findings of the axillary lesion showed signet-ring cells in the lymphatics. These clustered cells were PAS-positive, diastase-resistant, and stained with colloidal iron and CEA. During the work-up study to find the primary origin, we discovered advanced gastric cancer and multiple lymph node metastases. (Korean J Dermatol 2006;44(5):601~604)