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김동주,노형운,서상호,Kim, Dong-Joo,Roh, Hyung-Woon,Suh, Sang-Ho 한국유체기계학회 2004 한국유체기계학회 논문집 Vol.19 No.4
In this study the effects of fluid viscosity on the pump performances for a conventional centrifugal pump were experimentally investigated. The study aimed to compare the pump characteristics between water and viscosity fluids. In order to measure the flow rate and pressure, v-notch welt and bourdon pressure gauges were used for the codes of KS B6301 and KS B6302. The working fluids were water, aqueous sugar and glycerin solutions. The results were summarized as follows : The experimental results were summarized as follows : the pump characteristics of the total head, shaft power, and efficiency with high viscosity fluids were different from those of water. When the viscosity of the applied fluid was increased, the total head and efficiency were more decreased than those of water. The decreasing gradients of the total head and the efficiency were larger than water due to the increased disk friction losses at the duty operation point. However, the shut-off head was almost constant regardless the viscosity of applied fluids. Each efficiency curves for the sugar $20w\%$ and glycerin $20w\%$ solutions was decreased up to $15.1\%$ and $34.4\%$ than that of water, respectively.
김동주,장이찬,최재운,박진우,Dong-Ju Kim,M.D.,Lee-Chan Jang,M.D.,Jae-Woon Choi,M.D. and Jin-Woo Park,M.D. 대한갑상선-내분비외과학회 2012 The Koreran journal of Endocrine Surgery Vol.12 No.3
Clear cell renal cell carcinoma (RCC) is the most common histological subtype of malignant renal tumors. Although RCC frequently metastasizes to many organs, it rarely metastasizes to the thyroid gland without evidence of other organ involvement. We report a case of a metastatic renal cell carcinoma to the thyroid gland, which was misdiagnosed preoperatively as a follicular neoplasm from the fine needle aspiration cytology.