Evaluation for Impacts of Nitrogen Source to Groundwater Quality in Livestock Farming Area

Gyeong-Mi Lee,Sunhwa Park,Ki-In Kim,Sang-Ho Jeon,Dahee Song,Deok-hyun Kim,Tae-Seung Kim,Seong-Taek Yun,Hyen Mi Chung,Hyun-Koo Kim 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.5

We investigated 52 livestock farming complexes in Gyeong-Gi and Incheon provinces based on low, medium, and high livestock density and groundwater quality. The objective of this study was to evaluate a relationship between nitrate N concentration in groundwater and animal factors, such as livestock density and animal species. 2,200 groundwater samples for 3 years from 2012 to 2014 at Gyeong-Gi and Incheon provinces were collected and analyzed for pH, EC, DO, ORP, temperature, major anions and cations, such as NO₃-N, HCO₃<SUP>-</SUP>, PO₄<SUP>-</SUP>, SO₄<SUP>2-</SUP>, Cl<SUP>-</SUP>, NH₄-N, K<SUP>+</SUP>, Na<SUP>+</SUP>, Ca<SUP>2+</SUP>, Mg<SUP>2+</SUP>, T-N, and TOC. Average concentration of total N for generated load density was 23,973 g day<SUP>-1</SUP> km<SUP>-2</SUP> for cattle, 51,551 g day<SUP>-1</SUP> km<SUP>-2</SUP> for pig, and 52,100 g day<SUP>-1</SUP> km<SUP>-2</SUP> for poultry. For animal feeding species, average ratio for generated load over discharge load was 16.1% for cattle, 7.8% for pig, and 7.1% for poultry. Therefore, cattle feeding region is highly vulnerable for water pollution compared to pig and poultry feeding areas. The concentrations of chloride, nitrate, and total N in the groundwater samples were higher at high animal farming regions than other regions. The average concentration of nitrate, and chloride in groundwater samples was 5.0 mg L<SUP>-1</SUP>, 16.6 mg L<SUP>-1</SUP> for low livestock density, 6.9 mg L<SUP>-1</SUP>, 17.7 mg L<SUP>-1</SUP> for medium livestock density and 7.6 mg L<SUP>-1</SUP>, 22.7 mg L<SUP>-1</SUP> for high livestock density and total nitrogen (T-N) was 7.7 mg L<SUP>-1</SUP> for low livestock density, 9.4 mg L<SUP>-1</SUP> for medium livestock density, 10.7 mg L<SUP>-1</SUP> for high livestock density. In conclusion, based on this research, for managing groundwater quality near livestock farming regions, Ca-(Cl+NO₃) group from the Piper diagram is more efficient than using 19 factors for water quality standard.

Evaluation for Impacts of Nitrogen Source to Groundwater Quality in Livestock Farming Area

Lee, Gyeong-Mi,Park, Sunhwa,Kim, Ki-In,Jeon, Sang-Ho,Song, Dahee,Kim, Deok-hyun,Kim, Tae-Seung,Yun, Seong-Taek,Chung, Hyen Mi,Kim, Hyun-Koo 한국토양비료학회 2017 한국토양비료학회지 Vol.50 No.5

We investigated 52 livestock farming complexes in Gyeong-Gi and Incheon provinces based on low, medium, and high livestock density and groundwater quality. The objective of this study was to evaluate a relationship between nitrate N concentration in groundwater and animal factors, such as livestock density and animal species. 2,200 groundwater samples for 3 years from 2012 to 2014 at Gyeong-Gi and Incheon provinces were collected and analyzed for pH, EC, DO, ORP, temperature, major anions and cations, such as $NO_3-N$, ${HCO_3}^-$, ${PO_4}^-$, ${SO_4}^{2-}$, $Cl^-$, $NH_4-N$, $K^+$, $Na^+$, $Ca^{2+}$, $Mg^{2+}$, T-N, and TOC. Average concentration of total N for generated load density was $23,973g\;day^{-1}\;km^{-2}$ for cattle, $51,551g\;day^{-1}\;km^{-2}$ for pig, and $52,100g\;day^{-1}\;km^{-2}$ for poultry. For animal feeding species, average ratio for generated load over discharge load was 16.1% for cattle, 7.8% for pig, and 7.1% for poultry. Therefore, cattle feeding region is highly vulnerable for water pollution compared to pig and poultry feeding areas. The concentrations of chloride, nitrate, and total N in the groundwater samples were higher at high animal farming regions than other regions. The average concentration of nitrate, and chloride in groundwater samples was $5.0mg\;L^{-1}$, $16.6mg\;L^{-1}$ for low livestock density, $6.9mg\;L^{-1}$, $17.7mg\;L^{-1}$ for medium livestock density and $7.6mg\;L^{-1}$, $22.7mg\;L^{-1}$ for high livestock density and total nitrogen (T-N) was $7.7mg\;L^{-1}$ for low livestock density, $9.4mg\;L^{-1}$ for medium livestock density, $10.7mg\;L^{-1}$ for high livestock density. In conclusion, based on this research, for managing groundwater quality near livestock farming regions, $Ca-(Cl+NO_3)$ group from the Piper diagram is more efficient than using 19 factors for water quality standard.

‘인식된 짐스러움’과 ‘좌절된 소속감’이 청소년 자살생각에 미치는 영향

하정미(Ha Jung-Mi),설연욱(Seol Yeon-Uk),좌문경(Jwa Mun-Gyeong) 경성대학교 사회과학연구소 2010 社會科學硏究 Vol.26 No.4

본 연구에서는 조이너의 대인관계 이론에서 설명하고 있는 ‘인식된 짐스러움’과 ‘좌절된 소속감’이라는 두 가지 변수가 청소년의 자살생각에 어떤 영향을 미치는지를 살펴보고자 경상남도 지역의 중학교 3학년 그리고 고등학교 1, 2학년 990명을 대상으로 설문 조사를 실시하였다. 연구결과, 조사대상자의 성별, 가정의 경제적 수준에 따라 자살생각에 유의미한 차이가 있었으며, 두 독립변수인 ‘인식된 짐스러움’과 ‘좌절된 소속감’은 자살생각에 대해 주효과와 상호작용효과 모두 가지는 것으로 파악되었다. 이상과 같은 결과를 바탕으로 청소년 대상의 자살예방교육 및 사회적 관계망과 지지체계의 구축, 소속감 증진활동의 활성화 필요성을 제언하였다. This study is to understand the effect of 'perceived burdensomeness' and 'failed belongingness', which Joiner explains on his Interpersonal Theory of Suicide, to youth's suicidal ideation. 990 students, who were attending at middle and high schools in Gyeong-Nam province, were surveyed. The result revealed that participants' gender and families' economic status affect significantly on their suicidal ideation and both perceived burdensomeness and failed belongingness have both statistically significant major effects and interaction effects on youth's suicidal ideation. On the base of the result of this study suicide prevention education, systematic approaches, and group activities for social networking, and social support building have been suggested.

읽기장애 아동의 음운처리 능력 특성 연구

김미경,서경희 한국특수교육문제연구소 2003 특수교육저널 : 이론과 실천 Vol.4 No.4

최근 읽기장애와 언어와의 관계의 중요성이 부각되면서 음운처리 결함이 읽기장애의 원인으로 널리 받아들여지고 있다. 이에 본 연구는 2학년, 4학년 일반아동 29명과 읽기장애아동 23명을 대상으로 음운인식능력 검사와 단어회상하기 검사, 문장회상하기 검사, 글자, 숫자, 사물, 색깔명명하기 검사를 통한 읽기장애아동들의 음운처리능력 특성을 연구하였다. 연구 결과 읽기장애아동들은 일반아동들에 비해 음운인식, 작업기억, 명명속도에서 유의미한 차이를 보였다. 이러한 결과를 바탕으로 일반학급과 특수학급에서 읽기장애 아동들을 지도하는 프로그램개발에 기여할 것을 제안한다. The purpose of this study was to investigate difference between normal children and children with reading disabilities, ranged from grade 2 to grade 4 in phonological processing ability. The sample was classified into two groups: (1) a group of 23 children with reading disabilities; (2) a group of 29 normal children. Students in the sample of this study do not have severe emotional problems, uncorrected vision problems, hearing loss, acquired neurological disorders. The results of this study were as follows: 1.Children with reading disabilities performed significantly poorly on test of phonological awareness than children without reading disabilities. 2.Children with reading disabilities performed significantly poorly on test of working memory than children without reading disabilities. 3.Children with reading disabilities performed significantly poorly on test of naming speed than children without reading disabilities. There is also interaction effect between the presence or absence of reading disability and grade on naming speed.

EXISTENCE AND UNIQUENESS OF VOLTERRA INTEGRAL EQUATIONS

엄미례,조경미 東西大學校 1996 동서논문집 Vol.2 No.1

노인복지정책의 문제점과 개선방안에 관한 연구

손경숙,정미녀 三陟大學校 2004 論文集 Vol.37 No.-

In the population structure of our society due to the development of medical technology: which liberated many from various diseases, and diversified modem society, the average life span has extended greatly. and this has drawn much attention to social welfare for the elders which became an important matter. Many geriatric problems have floated due to change of family structures and values and changes of life style which is resulted from industrialization and urbanization in the modem days. This has created the lowering of social status for older generation which has resulted as a serious social problem. However: countermeasures taken from the government is very mere and still in the beginning level. In this sort of situation, taking a good look at all sorts of older generation isn\'t a somebody else\ story. This would have a direct effect on you, and would like to present an alternative plan for this problem. The effort of trying to make a better solution to this problem! would result in much more effective and prosperous perspective on the area of geriatric social welfare policies.

저장기간에 따른 오이김치의 비타민 C 및 클로로필 함량변화

박미란,이연정,고즈쿠에 노부유키,한재숙,최석현,허성미,한경필,최수근 한국식생활문화학회 2004 韓國食生活文化學會誌 Vol.19 No.5

This study was carried out to examine the changes of pH, chlorophyll, chlorophyll patterns and ascorbic acid contents, and sensory evaluation in Oi-Kimchi by the different periods of storage. The contents of chlorophyll a and b were 52.2% and 14.44% at storage 0 days, 20.67% and 16.99% at storage 11 days, 0% at storage 14 days, and decreased with storage times increased. But, phephorbide a and b were increased with storage times increased until storage 11 days, and were 28.44% and 1.25% at storage 0 days, 42.63% and 15.79% at storage 11 days, 0% at storage 12, 14 days. The contents of ascorbic acid were increased until storage 4 days, but afterwards were decreased with storage times increased, and were 2.57㎎% at storage 0 days, 5.49㎎% and 2.95㎎% at storage 11 days, 0% at storage 14 days. Sensory evaluations of appearance, flavor, taste, texture, overall acceptability showed the highest at storage 8 days, and disliked after storage 10 days.

집단유전 개념 학습에서 귀납적-연역적인 수업효과 비교

김위경,이미숙,이길재 한국과학교육학회 2003 한국과학교육학회지 Vol.23 No.2

본 연구는 집단 유전(하디-바인베르크 법칙)개념 학습에 있어서 귀납적 지도 방법과 연역적 지도방법에서 효과의 차이를 알아보고 학습자의 인지적 특성에 맞는 수업모형에 대한 시사점을 얻고자 하였다. 연구대상은 고등학교 남학생 180명이며 90명은 귀납식 수업모형, 90명은 연역식 수업모형으로 수업을 하였다. 인지적 특성을 파악하기 위해서 논리적 사고력 검사(GALT)와 인지양식 검사(GEFT)를 실시하였다. 본 연구의 결과는 다음과 같다. 첫째, 귀납적인 지도 방법이 연역적인 지도방법에 비해서 유의도 수준 0.01에서 개념 검사 및 성취도 검사에서 유의미하게 효과적인 것으로 나타났다. 둘째, 귀납적 지도방법이 형식적 조작기의 학생과 장 독립적 학생에게 있어서 연역적 地도방법에 비해 더 효과적인 것으로 나타났다. 셋째, 인지수준이 과도기에 있는 학습자와 장의존적인 학습자에 있어서는 연역적 수업이 평균으로 볼 때는 효과적이었으나 통계적으로는 의미가 없었다. 이러한 결과는 교사들의 학습전략을 다양화 및 학습자의 인지수준과 인지양식에 대한 고려가 필요함을 시사해준다. The purposes of this study was to investigate the effect of inductive Instructional method and deductive one concerning the learners' population genetic concepts and achievement according to learners' cognitive characteristics. For the study, 180 students were sampled from a boys' high school: 90 students for inductive teaching method and 90 students for deductive teaching method. Group Assessment of Logical Thinking(GALT) and Group Embedded Figure Test(GEFT) were used as the measure of cognitive characteristics. The results of this study were as follows. 1) The inductive instructional method was more effective in the understanding of population genetic concepts and their achievement. 2)Inductive instructional method was more effective than deductive one for the learners in formal operational level and in field independent cognitive style. 3) For the learners in a transitional level and field dependent cognitive style, deductive instructional way was more effective than inductive way on the average, but it was not statistically significant. It was turned out that learners' cognitive level was one of important factors when teachers instruct the concept of population genetics.

연무에 있어서 대규모 대기 확산현상의 수치해석

윤경미,배명환,김정민 경상대학교 생산기술연구소 2002 工學硏究院論文集 Vol.2 No.-

The spectral finite difference method with a highly spatial resolution and a fast computation speed is applied to simulate the numerical analysis of large-scale atmospheric diffusion phenomenon in smog. A two-dimensional domain as an analytic object is selected, and an analytic fluid is assumed to be laminar, incompressible and viscous. Heat flux and smog inflow are taken in a fixed section on an abscissa as a fire phenomenon. Two-dimensional Navier-Stokes equations with a buoyancy under Boussinesq assumption, continuity equation, energy equation and diffusion equation as governing equations are used. Using a conformal boundary-fitted coordinate system, numerical analyses are performed on various conditions. Dimensionless values of concentration, temperature and stream function increase with the Grashof number. Only dimensionless concentration increases with dimensionless diffusion coefficient, but dimensionless values of temperature and stream function are not changed with dimensionless diffusion coefficient. Except dimensionless values of stream function, concentration and temperature decrease with increasing the Reynolds number.

감자를 첨가한 기능성 크림수프의 품질 특성

한경필,한재숙,소기신행,김동석,박미란,이갑랑 한국조리과학회 2005 한국식품조리과학회지 Vol.21 No.1

The purpose of this study was to investigate the quality characteristics of potato added functional cream soup. The highest crude protein (p<.01) and crude lipid (p<.001) were for the potato soup with added potato peel (S₃). The highest pH of 5.95 was for the potato soup with added potato peel (S₄). The highest lightness of 69.46(1, value) was for the potato soup with added potato peel (S₃) (p<.01). The redneess(a value) and yellowness(b value) were increased by the adding of potato peel to the potato soup(p<.01). Viscosity was increased by potato content, and was the highest for the potato soup (S₂) (p<.001). The glycoalkaloid content of the potato soup with added potato peel was 175 mg and 2.20 mg, for Si and S4 respectively. In sensory evaluation. the highest sensory scores for flavor and taste (p<.05) of mean 3.55 and 3.45, respectively, were obtained from the potato soup with added potato peel (S₄). The highest overall acceptability of mean 3.00 was for the potato soup with added potato peel (S₃) (p<.01).