A preliminary investigation into the decomposition rate of wild boar carcasses in forest habitats

Hee-Kyeung Cho,Eu-Tteum Kim,Bong-Su Jung,Son-Il Pak 한국예방수의학회 2021 예방수의학회지 Vol.45 No.1

The estimation of the postmortem interval (PMI, the time that has elapsed since the death) is a critical issue for the biosecurity enforcement officers who implement to the timely establishment of biosecurity zone for preventing susceptible animals from disease transmission given the rapid occurrence of an infectious disease. Increasing attention has been paid to PMI of wild boar (Sus scrofa) carcasses associated with African swine fever epidemics in Korea since October 2019 to explain the geographical transmission of the disease, as well as to provide potential target animals for prevention measures in terms of farm biosecurity. This study is, to the best of our knowledge, the first to describe the decomposition process of wild boars in different microhabitats in the country. In the present comparative study, we obtained field data from the decomposition process of the wild boar and domestic pig carcasses continuously exposed aboveground in natural environment settings allowing animal scavenging. This study compared the pattern of decomposition in 16 wild boar carrion and 10 domestic pig carcasses placed between August and November 2019. Quite differences in decomposition rate measured by total body score and tissue s gross morphology over time were observed between wild boars and domestic pigs. Overall, the wild boar decomposed much more slowly than the domestic pig throughout the end of the experimental period. In addition, color changes to the skin were easily seen in domestic pigs, whereas there is much variation in the wild boar, especially carcasses placed in late autumn. Moreover, some wild boar carcasses did not show any sign of bloating. These results indicate that decomposition rates derived from forensic taphonomic studies on domestic pigs may be not directly applicable to the wild boar, hence there is a need to develop regional decomposition models to be employed in different geographical situations to increase the accuracy of PMI of wild boar carcasses.

Population viability analysis to estimate the needed number of capture-and-remove wild boars for control of African swine fever in the Republic of Korea

조희경(Hee-Kyeung Cho),정봉수(Bong-Su Jung),정충식(Chung-Sik Jung),박선일(Son-Il Pak),김으뜸(Eu-Tteum Kim) 한국예방수의학회 2020 예방수의학회지 Vol.44 No.4

Since the first detection of the African swine fever (ASF) virus in the Republic of Korea in 2019, the Korean government has applied interventions, including fencing, increasing the biosecurity level at domestic pig farms, and the capture-and-removal of wild boars. In particular, wild boars are an important risk factor for ASF control because they can spread disease among susceptible animals, such as wild boars or domestic pigs. A capture-and-removal method aims to reduce the likelihood of ASF transmission from wild boars to domestic boars or among wild boars by decreasing the number of susceptible wild boars. This study estimated the required number of wild boars captured and removed for ASF control using population viability analysis. Population factors, such as a life span, sex ratio, or an inbreeding depression with different capture-and-removal proportions of wild boars, were included in the analysis. Ten scenarios with different capture-and-removal proportions of wild boars and different periods of culling were considered. According to the results, a method in which 75% of wild boars are captured-and-removed for at least three years showed long-term effectiveness for more than ten years. The current ASF control method, in which 33% of wild boars are captured-and-removed, decreased the number of wild boars for three years, after which the wild boar population increased to more than its initial number. Given the limited human and material resources for controlling ASF in the Republic of Korea, it is recommended that resources be prioritized to increase the capture-and-removal proportion of wild boars to take full advantage of the ASF-control effectiveness.

어린이집에서의 장애아동 보육에 대한 교사와 부모의 요구 분석

조용태,이영석,김경중,신현기,임명희,이경선,이승은 한국정서학습장애아교육학회 1999 정서ㆍ행동장애연구 Vol.15 No.1

This study was analyzed the needs of parents and teachers on caring children with disabilities into day care center. The finding of this study were as follows: 1. Placement pattern was separate class, and instructional method was integrational caring. 2. Care program types were care program by categories of children with disabilities and integrational care program. 3. Categories of children with disabilities included care program were developmental delayed, mental retardation, behavioral and emotional disorders, autism, attentional deficit-hyperactivity disorders. 4. Goals of care program were modification or intervention on specific problem behavior, prompting typical development in early childhood, and advancing of social adjustment ability. 5. Content of care program was selected the self-help skills.

Atomic layer deposited zinc oxysulfide <i>n</i>-type buffer layers for Cu₂ZnSn(S,Se)₄ thin film solar cells

Hong, Hee Kyeung,Kim, In Young,Shin, Seung Wook,Song, Gwang Yeom,Cho, Jae Yu,Gang, Myeng Gil,Shin, Jae Cheol,Kim, Jin Hyeok,Heo, Jaeyeong Elsevier 2016 Solar energy materials and solar cells Vol.155 No.-

<P><B>Abstract</B></P> <P>The structural, electrical, chemical, and optical properties of ternary Zn(O,S) thin films formed by atomic layer deposition (ALD) were investigated. It was revealed that the film׳s characteristics were highly influenced by the O/(O+S) ratio. The <I>n</I>-type Zn(O,S) layer was applied to both S-rich and Se-rich Cu<SUB>2</SUB>ZnSn(S,Se)<SUB>4</SUB> (CZTSSe) absorbers as an alternative buffer layer to conventional CdS. The device performance relationship to the O/(O+S) ratio was examined. The highest power-conversion efficiency (PCE) of 2.75% and 3.30% was achieved using an actual O/(O+S) ratio of ~0.67 in the buffer layer for S-rich and Se-rich CZTSSe solar cells, and these PCEs correspond to 77% and 67% of the standard CdS-based solar cells, respectively. Further improvement in Se-rich CZTSSe was demonstrated by using NH<SUB>4</SUB>OH solution instead of pure H<SUB>2</SUB>O as oxygen source during ALD process. The dependence of the solar cell performance on the O/(O+S) ratio was investigated using dark current density–voltage (<I>J</I>–<I>V</I>), external quantum efficiency (EQE), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX).</P> <P><B>Highlights</B></P> <P> <UL> <LI> CdS buffer layer for CZTSSe solar cells was replaced with Zn(O,S). </LI> <LI> Atomic layer deposition technique was used for precise anion control of Zn(O,S). </LI> <LI> O/(O+S) ratio of ~0.67 was the optimized composition. </LI> <LI> Conversion efficiency was further improved by using NH<SUB>4</SUB>OH instead of H<SUB>2</SUB>O. </LI> </UL> </P> <P><B>Graphical Abstract</B></P> <P>[DISPLAY OMISSION]</P>

마이크로 컴퓨터를 이용한 직류 서어보전동기의 파라미터 측정의 자동화

천희영(Hee-Young Chun),박귀태(Gwi T. Park),임영철(Young C. Lim),장영학(Young H. Jang),조경영(Kyeung Y. Cho) 대한전기학회 1989 대한전기학회 학술대회 논문집 Vol.1989 No.11

영양교사의 전문성 증진을 위한 직무연수에 관한 연구 -경북지역 중심으로-

박경숙 ( Kyeung Suk Park ),조성희 ( Sung Hee Cho ) 대한영양사협회 2011 대한영양사협회 학술지 Vol.17 No.4

The present study was performed to evaluate the job training needs of school nutrition teachers in order to enhance their specialty. Three hundred and forty questionnaires were distributed to school nutrition teachers working at primary and high schools in the Gyeongbuk area while 45 were distributed to professors during 2010∼2011. Three hundred and two questionnaires from school nutrition teachers and 33 from professors were returned and analyzed. The rate of teachers practicing nutrition education was 54%, and the educational content was obtained mainly from the internet. The top three problems the teachers encountered were ``lack of standardized educational materials``, ``inexperience of teaching``, and ``insufficiency of expert knowledge``. The teachers recognized ``training program`` as the best solution. However, the job training program operated immediately after teachers were appointed scored only 3.03 out of 5.00. Important contents of the training program ranked highly by the teachers were ``development of education materials``, ``nutrition counseling``, and ``teaching method``. The professors included ``expert knowledge`` in their top three contents. Both the teachers and professors agreed to increase the frequency of ``practice`` in training methods. Other factors the teachers considered to be important were high quality, diversity, ability of the instructor, training cycle, and the institution in charge. From these results, it can be concluded that efficient job training programs are needed for school nutrition teachers according to the importance of the education contents and training methods. It is therefore suggested that a cooperation committee be composed of an educator, educatee, and related personal in a local education office in order to operate the program.

GAN모델과 DNN모델을 활용한 Anomaly Detection에 관한 연구

강경석(Kang Kyeung Seok),이충현(Lee Chung Hyun),장건희(Jang Gun Hee),조성래(Cho Sung Rae) 한국통신학회 2018 한국통신학회 학술대회논문집 Vol.2018 No.11

Expression of Proviral Integration Site for Moloney Murine Leukemia Virus 1 (Pim-1) Is Post-transcriptionally Regulated by Tristetraprolin in Cancer Cells

Kim, Hong Kyeung,Kim, Chae Won,Vo, Mai-Tram,Lee, Hyun Hee,Lee, Ji Young,Yoon, Nal Ae,Lee, Chae Yeong,Moon, Chang Hoon,Min, Young Joo,Park, Jeong Woo,Cho, Wha Ja American Society for Biochemistry and Molecular Bi 2012 The Journal of biological chemistry Vol.287 No.34

<i>Tpl2</i> Kinase Impacts Tumor Growth and Metastasis of Clear Cell Renal Cell Carcinoma

Lee, Hye Won,Joo, Kyeung Min,Lim, Joung Eun,Cho, Hyun Jung,Cho, Hee Jin,Park, Min Chul,Seol, Ho Jun,Seo, Seong Il,Lee, Jung-Il,Kim, Sunghoon,Jeong, Byong Chang,Nam, Do-Hyun American Association for Cancer Research 2013 Molecular cancer research Vol.11 No.11

<P>Due to the innate high metastatic ability of renal cell carcinoma (RCC), many patients with RCC experience local or systemic relapses after surgical resection. A deeper understanding of the molecular pathogenesis underlying advanced RCC is essential for novel innovative therapeutics. <I>Tumor progression locus 2</I> (<I>Tpl2</I>), upregulated in various tumor types, has been reported to be associated with oncogenesis and metastatic progression via activation of the MAPK signaling pathway. Herein, the relevance of <I>Tpl2</I> in tumor growth and metastasis of RCC is explored. Inspection of The Cancer Genome Atlas (TCGA) indicated that Tpl2 overexpression was significantly related to the presence of metastases and poor outcome in clear cell RCC (ccRCC), which is the most aggressive subtype of RCC. Moreover, expression of Tpl2 and CXCR4 showed a positive correlation in ccRCC patients. Depletion of Tpl2 by RNAi or activity by a <I>Tpl2</I> kinase inhibitor in human ccRCC cells remarkably suppressed MAPK pathways and impaired <I>in vitro</I> cell proliferation, clonogenicity, anoikis resistance, migration, and invasion capabilities. Similarly, orthotopic xenograft growth and lung metastasis were significantly inhibited by <I>Tpl2</I> silencing. Furthermore, Tpl2 knockdown reduced CXCL12-directed chemotaxis and chemoinvasion accompanied with impaired downstream signaling, indicating potential involvement of Tpl2 in CXCR4-mediated metastasis. Taken together, these data indicate that Tpl2 kinase is associated with and contributes to disease progression of ccRCC.</P><P><B>Implications:</B> <I>Tpl2</I> kinase activity has prognostic and therapeutic targeting potential in aggressive clear cell renal cell carcinoma. <I>Mol Cancer Res; 11(11); 1375–86. ©2013 AACR</I>.</P>

Dasania marina gen. nov., sp. nov., of the Order Pseudomonadales, Isolated from Arctic Marine Sediment

이유경,홍순규,Hyun Hee Cho,Kyeung Hee Cho,이홍금 한국미생물학회 2007 The journal of microbiology Vol.45 No.6

An obligately aerobic bacterium, strain KOPRI 20902T, was isolated from a marine sediment in Ny-Ålesund, Spitsbergen Islands, Norway. Cells were irregular rods and motile with polar monotrichous flagellum. The optimum growth temperature was 17-22°C. Cells grew best in pH 7.0-10.0 and 3-4% sea salts (corresponding to 2.3-3.1% NaCl). The novel strain required Ca2+ or Mg2+ in addition to NaCl for growth. Sequence analysis of 16S rRNA gene revealed that the Arctic isolate is distantly related with established species (<92.4% sequence similarity) and formed a monophyletic group with Cellvibrio, which formed a distinct phylogenetic lineage in the order Pseudomonadales. Predominant cellular fatty acids [C16:1 ω7c/15:0 iso2OH (45.3%), C16:0 (18.4%), ECL 11.799 (11.2%), C10:0 3OH (10.4%)]; DNA G+C content (37.0 mol%); nitrate reduction to nitrogen; absence of aesculin hydrolysis, N-acetyl-β-glucosaminidase and esterase; no assimilation of arabinose, galactose, glucose, lactose, maltose, and trehalose differentiated the strain from the genus Cellvibrio. Based on the phylogenetic and phenotypic characteristics, Dasania marina gen. nov., sp. nov. is proposed in the order Pseudomonadales. Strain KOPRI 20902T (=KCTC 12566T=JCM 13441T) is the type strain of Dasania marina. An obligately aerobic bacterium, strain KOPRI 20902T, was isolated from a marine sediment in Ny-Ålesund, Spitsbergen Islands, Norway. Cells were irregular rods and motile with polar monotrichous flagellum. The optimum growth temperature was 17-22°C. Cells grew best in pH 7.0-10.0 and 3-4% sea salts (corresponding to 2.3-3.1% NaCl). The novel strain required Ca2+ or Mg2+ in addition to NaCl for growth. Sequence analysis of 16S rRNA gene revealed that the Arctic isolate is distantly related with established species (<92.4% sequence similarity) and formed a monophyletic group with Cellvibrio, which formed a distinct phylogenetic lineage in the order Pseudomonadales. Predominant cellular fatty acids [C16:1 ω7c/15:0 iso2OH (45.3%), C16:0 (18.4%), ECL 11.799 (11.2%), C10:0 3OH (10.4%)]; DNA G+C content (37.0 mol%); nitrate reduction to nitrogen; absence of aesculin hydrolysis, N-acetyl-β-glucosaminidase and esterase; no assimilation of arabinose, galactose, glucose, lactose, maltose, and trehalose differentiated the strain from the genus Cellvibrio. Based on the phylogenetic and phenotypic characteristics, Dasania marina gen. nov., sp. nov. is proposed in the order Pseudomonadales. Strain KOPRI 20902T (=KCTC 12566T=JCM 13441T) is the type strain of Dasania marina.