Safety and Effects on General Health, Skin Condition and Lipid Profile of a Soy Lecithin-Based Dietary Supplement in Healthy Dogs

오예인,이재희,정인성,주범성,장동석,한상훈,이기종 한국임상수의학회 2019 한국임상수의학회지 Vol.36 No.4

The aim of this study was to evaluate the safety and effects of a soy lecithin-based supplement on the general health, skin condition, and blood lipid levels of dogs. Twenty-five, healthy, privately-owned dogs were enrolled in the study. Oral supplementation was administered for 8 weeks in the treatment group. Evaluation items included a thorough physical examination, owner responses to a questionnaire, blood analysis (CBC, CRP, serum chemistry, lipid profile). The results showed a significant improvement in amount of exercise, water intake, skin exfoliation in the treatment group (P < 0.05) but no significant changes in the other evaluation items, including no significant changes in blood component results following administration of the supplement. Most dogs well tolerated the treatment, and there were no serious adverse events. We suggest that soy lecithin has potential as a nutraceutical for the positive effect of general health condition such as activity and skin condition. Further studies are needed to establish the appropriate dose level and administration frequency of soy lecithin in dogs.

Clinical Presentation and Management of Five Dogs with Apocrine Gland Adenocarcinoma of Anal Sac

오예인,서경원,김준영,윤정희,황철용,이상구,윤화영 한국임상수의학회 2009 한국임상수의학회지 Vol.26 No.6

Five dogs diagnosed as apocrine gland adenocarcinoma (AGAC) of the anal sac based on cytology and/ or histology. Mean age of these dogs was 11 years old. One dog treated with supportive care without other medical interventions for hypercalcemia was died one month after diagnosis. Other four dogs were treated with chemotherapy and one of these dogs was intervened with complete surgical resection. Two months after the diagnosis, one of the dogs treated with chemotherapy died. The survival time of other survived three dogs from the time of diagnosis was 19, 9, and 13 months respectively and they are still alive at this time. After chemotherapy, three dogs were managed generally in good body condition and maintained as similar in size as time of diagnosis. The results are suggested that it is worthwhile to try chemotherapy for managing AGAC in dogs especially complicated or metastasized to regional lymph nodes.

공공임대주택에 거주중인 노령인구 인지특성에 관한 연구

오예인,정다운,권순정 한국의료복지건축학회 2018 의료·복지 건축 Vol.24 No.4

Purpose: Korean society is undergoing the rapid increase and poverty of elderly population. Therefore, the appropriate supply and planning of public rental housing for the low-income elderly is more important. The purpose of this study is to present the basic data for the study and planning of the elderly housing complex by analyzing the cognitive characteristics of the elderly residing in the rental housing. Methods: A questionnaire survey was conducted to identify health characteristics of the elderly living in the 'Gongreung SH Apartment'. 100 random samples were collected and 82 valid samples were analysed. Statistical analysis was performed using Excel and R for the age, sex, health, outdoor walking frequency and characteristics of Cognitive map of the elderly. Results: The characteristics of cognitive map were classified into point shapes and linear shapes. The linear group was lower in average age than the point group and tended to draw the map wider. The wider the map was, the more the number of elements in cognitive map was. The number of elements on the cognitive map decreased as respondents’ age increased. On the other hand it was not related to residence period and gender of the elderly. Implication: The cognitive extent of the residential environment tends to decrease with age. Men's cognitive range is wider than women’s. There is no corelation between the number of cognitive elements and cognitive map type. Men tend to have a systematic image of city, whereas women focus on relational and social urban factors. For sustainable apartment complex design, various characteristics of the group including men and women, different age and different health status should be considered.

분류층 석탄 가스화기 내벽의 슬래그 거동 예측 모델에 대한 고찰

예인수(In-Soo Ye),류창국(Changkook Ryu),김봉근(Bongkeun Kim) 한국연소학회 2014 KOSCOSYMPOSIUM논문집 Vol.2014 No.5

In entrained flow coal gasification, the formation of slag layer on the reactor wall is crucial in protecting the equipment from excessive heat and chemicophysical damages. For the prediction of the slag flow, a few analytical models have been reported in the literature, which is based on signification simplifications on the slag viscosity and/or temperature profile. In order to overcome the limitation of existing models, a new numerical approach was proposed in this study. The performance of two exisiting analytical models and the new numerical model was evalulated for indicative operating conditions of a model gasifier. The results show that the reliability of existing models is limited to simple conditions, while the new model can be applied to various thermal conditions with large change in slag properties.

냉동고기풀 제조에 관한 고찰

예인해 부산수산대학교 1991 (最高經營管理者課程)論文集 Vol.1991 No.5

석탄 가스화기 내벽의 슬래그 유동 해석 및 열전달 모델링

예인수(In-Soo Ye),류창국(Changkook Ryu),김봉근(Bongkeun Kim) 한국연소학회 2013 KOSCOSYMPOSIUM논문집 Vol.2013 No.12

In a commercial coal gasifier, coal ash turns into slag forming solid and liquid layers on the wall, protecting the membrane tubes from excessive heat flux and damage. In order to overcome the limitation of conventional analytical model for the slagging wall, a comprehensive numerical model was established in this study. The model solves the mass, momentum and energy equation for a liquid slag layer adopting the control volume method on a 2-dimensional cylindrical system. The performance of the model was evaluated using an Excel/VBA code for various operating conditions of heat flux and slag deposition from the syngas. The model reasonably predicted the thickness, velocity, temperature of the slag layers, and resultant heat flux to the membrane wall. Further study is required to combine this model with the gas-side model for a gasifier and to investigate the detailed gas-slag interactions.

전산해석을 통한 원자로 노심 용융물의 채널 내 퍼짐 및 열전달 특성 분석

예인수(In-Soo Ye),류창국(Changkook Ryu),하광순(Kwang-Soon Ha),송진호(Jin-Ho Song) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11

In an unlikely accident of nuclear reactor melt down, the leaked core-melt or corium needs to be contained in a device called core-catcher for cooling and stabilization. The ex-vessel behavior of corium involves complex physical and chemical mechanisms of flow propagation, heat transfer and reactions with sacrificial materials. As part of design development of a core-catcher, this study investigated the detailed characteristics of corium flow and heat transfer using a commercial CFD code for experimental data of corium spreading available in literature. The volume-of-fluid (VOF) model was applied to predict the interfacial surface formation of corium and surrounding air, and the discrete ordinate model was adopted for prediction of radiation from the surface of corium to the surroundings. It was found that the effect of cooling by radiation through the top surface of corium was dominant on the temperature and viscosity profiles at the corium front.

석탄 분류층 가스화기 내 유동 및 입자 거동의 특성에 대한 전산유동해석 연구

예인수(Insoo Ye),박상빈(Sangbin Park),류창국(Changkook Ryu),김유석(Youseok Kim) 한국연소학회 2011 KOSCOSYMPOSIUM논문집 Vol.- No.43

During gasification in an entrained reactor, coal undergoes a series of complex reactions including drying, pyrolysis, gasification and melting of ash. At elevated operating pressures, the reactor design becomes compact but requires an optimization of fuel and oxidant reactions, temperature, wall heat flux and formation of liquid slag on the membrane wall. Using computational fluid dynamics, this study investigates the progress of coal gasification in the entrained flow reactor for a 300㎿e capacity IGCC. The results show that the nozzle angles of coal and oxidant injection significantly influenced the flow and reaction pattern. The distribution of ash deposition and heat flux onto the wall were very sensitive to the nozzle angle, while the cold gas efficiency did not change noticeably.

분류층 석탄 가스화기 내 임계점도온도의 변화에 따른 슬래그 층의 영향 연구

예인수(Insoo Ye),류창국(Changkook Ryu) 한국연소학회 2015 KOSCOSYMPOSIUM논문집 Vol.2015 No.5

In the gasification, burnout coal particles converts to molten ash called slag with hot gas atmosphere. The slag layers which are accumulated slag particles and consist of solid and liquid phase prevent damages from hot synthesis gas and particles, and liquid slag flows down for continuous coal ash discharge. Critical viscosity temperature (Tcv) is the interface point determined by flowability between two slag layers. Higher Tcv with coal affects thick slag layer onto the gasifier wall, while for the lower Tcv, the layers may become thin or liquid flow only except to fixed solid phase. This study evaluates the theoretical influences of Tcv, critical viscosity and flux addition on the slag behavior in a commercial coal gasifier using a numerical model. The results showed that a lower slag Tcv led to an exponential decrease in the solid slag thickness owing to an increased wall heat flux and a reduced temperature difference between the slag and the coolant. However, liquid slag thickness was relatively small.

석탄 가스화시 회분의 임계점도온도 및 플럭스 비율 변화에 따른 벽면 슬래그 거동 특성 분석

예인수(Insoo Ye),류창국(Changkook Ryu),김봉근(Bongkeun Kim) 한국연소학회 2014 KOSCOSYMPOSIUM논문집 Vol.2014 No.11

In the entrained-flow coal gasifier, coal ash turns into a molten slag most of which deposits onto the wall to form liquid and solid layers. Critical viscosity refers to the viscosity at the interface of the two layers. The slag layers play an important role in protecting the wall from physical/chemical attack from the hot syngas and in continuously discharging the ash to the slag tap at the bottom of the gasifier. For coal with high ash melting point and slag viscosity, CaO-based flux is added to coal to lower the viscosity. This study evaulates the effect of critical viscosity temperature and ash/flux ratio on the slag behavior using numerical modelling in a commercial gasifier. The changes in the slag layer thickness, heat transfer rate, surface temperature and velocity profiles were analyzed to understand the underlying mechanism of slag flow and heat transfer.