2010 해남, 평창, 원주지역 갈대 등 야초류의 이용실태와 사료가치 평가

서성(Sung Seo),한대덕(Dae Duk Han),장선식(Sun Sik Jang),김원호(Won Ho Kim),정민웅(Min Woong Jung),최진혁(Jin Hyuck Choi),김진숙(Jin Sook Kim),김하영(Ha Young Kim),이종경(Joung Kyong Lee) 한국초지조사료학회 2012 한국초지조사료학회지 Vol.32 No.1

본 연구는 부존 조사료자원 이용으로 수입사료를 줄이고 사료비를 절감하고자 2010년도에 전남 해남(간척지), 강원 평창(강변), 원주(섬강변), 전남 영광(와탄강변) 등 4개 지역에서 갈대와 억새 등 야초 자생지를 탐색하고, 수확·이용실태 조사와 함께 사료가치를 분석하였다. 전남 해남 해남목장 내 갈대(Phragmites communis) 위주의 야초 자생지는 300 ha로 예년에는 2회 곤포작업하여 연간 사일리지로 2,300~2,500톤(ha당 8톤)을 생산하였으나 2010년도는 1회 곤포조제로 사일리지 2,000톤(ha당 7톤)을 생산하였다. 유통가격은 롤 당 53천원으로 ㎏당 110원이었다. 곤포는 전량 자가소비하며, 외부 작업단에 롤 당 26천원의 작업비를 지불하였다. 연간 조수입은 2억 2,260만원이며, 소득은 1억원 수준(345천원/ha)이었다. 초장 150 ㎝의 갈대는 조단백질 8.4%, 상대사료가치 71.9 (건초 5등급), 건물 소화율 60.1%로 사료가치는 볏짚에 비해 약간 나은 것으로 평가되었다. 갈대 사일리지의 사료가치와 유기산 함량은 동일 지역에서 동일한 재료로 사일리지를 조제하더라도 수확시기에 따라 차이가 컸으며(CP 4.7~6.4%, RFV 62.2~78.9, 건물 소화율 41.9~53.9%), 갈대 사일리지의 품질은 수단그라스에 비해 불량하였다. 강원 평창 강변 자생갈대의 사료가치는 초장이 79, 117, 121, 142㎝로 생육이 진행됨에 따라 낮아져, 조단백질은 각각 13.9%에서 7.6%로, 상대사료가치는 90.7 (건초 3등급)에서 76.1 (건초 4등급)로, 건물 소화율은 72.9%에서 54.7%로 감소하였다. 원주 섬강 주변 야초류는 곤포수확 작업에 어려움이 있었으며, 초장 130 cm의 갈대는 조단백질 8.5%, 상대사료가치 82.3 (건초 4등급), 건물 소화율 70.2%로 사료가치는 높았으며, 220㎝의 성숙한 갈대는 조단백질 10.2%, 상대사료가치 65.1 (건초 5등급), 건물 소화율 48.9%로 볏짚 대비 조금 나은 것으로 평가되었다. 전남영광지역에서는 와탄천 주변에 자생하는 갈대를 수거 이용하고자 시도하였으나 경제성이 없어 중단하였다. 이상의 결과를 종합하여볼 때, 갈대, 억새 등 야초류는 현 상태에서 최대한 수거·이용하되, 사료가치를 유지하고 가축 기호성이 양호한 시기에 수확하는 것이 중요하며, 최소한 볏짚과 비슷하거나 그 이상의 사료가치를 기대하기 위해서는 7월 중순 이전(늦어도 7월까지)에 수확·이용하는 것이 권장된다. This study was carried out in 2010 to investigate the utilization and forage quality of native grasses, such as Phragmites communis which might reduce the cost of feeding domestic cattle. The regions surveyed were the Haenam ranch in Haenam, Pyeongchang, Wonju, and Yeonggwang. In Haenam, yearly silage production harvested from 300 ha was 2,000 MT (7 MT/ha). All of those round bale silages were self-consumed in that region, and marketing price was 50,000 55,000 won per roll (110 won/㎏). Phragmites communis of 150 ㎝ in length contained 8.4% crude protein (CP) with relative feed value (RFV) 71.9 and 60.1% in vitro dry matter digestibility (IVDMD), which was somewhat more favorable than forage quality of rice straw. The silage quality of Phragmites communis varied greatly by the time of harvest (CP 4.7 6.4%, RFV 62.2 78.9, and IVDMD 41.9 53.9%), even with the same district and of the same original forage materials. Generally, the quality of Phragmites communis silage of was poorer than that of sorghum * sudangrass hybrid. In Pyeongchang, forage quality of Phragmites communis was decreased from 13.9% to 7.6% in CP, 90.7 to 76.1 in RFV, and 72.9% to 54.7% in IVDMD, as plant was getting mature, from 79 ㎝ to 117 ㎝, 121 ㎝ or to 142 ㎝ in length. In Wonju, the quality values of Phragmites communis of 130 ㎝ in length were 8.5% CP, 82.3 RFV and 70.2% IVDMD, while those of matured grasses of 220 ㎝ in length were lower (10.2% CP, 65.1 RFV and 48.9% IVDMD), but this was a little more favorable than quality of rice straw. In Yeonggwang, feeding Phragmites communis was tried in a Hanwoo feed, but stopped due to low profitability. In conclusion, the overall quality of most native grasses including Phragmites communis in this survey was poor. Therefore, we recommend that Phragmites communis and native grasses should be harvested on June or July to obtain richer forage quality in forage values than rice straw.

초등 예비교사 교육실습 중 체육수업 지도 내실화 방안

Jang-Won Seo(Jang-Won Seo) 공주교육대학교 초등교육연구원 2022 敎育論叢 Vol.59 No.3

본 연구는 초등 예비교사 교육실습 중 체육수업 지도와 관련하여 교육실습 과정에서 나타난 문제점을 도출하고 이러한 문제점을 해결하기 위한 체육수업 지도 내실화 방안을 제시하고자 하는데 목적이 있다. 이러한 목적을 달성하기 위하여 G교육대학교 3학년 학생들 중 본 연구자가 강의하고 있는 3개 학과 80명 학생들을 대상으로 개방형 설문지를 통해 기초 자료를 수집하였다. 이후 본 연구의 목적을 이해하고 동의를 한 7명의 학생들을 연구참여자로 선정한 후 심층면담을 실시하여 자료를 수집하고 귀납적 범주분석을 통해 자료를 분석하였다. 연구결과에서 교육실습 중 체육수업 지도와 관련하여 도출된 문제점은 체육수업 지도 기회 부족, 지도교사의 전문성 부족, 참관을 통한 체육수업 지도, 교육이론 적용의 어려움, 지도조언의 부족, 체육 시설 및 용 기구의 부족, 교육실습생에 대한 배려 부족이었다. 도출된 문제점을 해결하기 위해 대학교 차원, 실습학교 차원, 교육(실습) 정책 차원으로 구분하여 내실화 방안을 제시하였다. 초등예비교사교육은 초등교육의 성패를 좌우할 중요한 과정이며, 교육실습은 대학 강의를 통해 학습한 교육이론을 초등학생들을 대상으로 실제 적용해 봄으로써 보다 온전한 교사교육을 완성시킬 수 있는 중요한 교육 활동이다. 또한 교육실습은 체육수업에 관한 실제적 지식을 함양할 수 있는 기회를 제공함과 동시에 미래 초등 체육교육의 모습을 가늠할 척도의 역할을 할 수도 있다. 따라서 교육실습을 통해 초등 예비교사들에게 체육수업 지도에 관한 체계적이고 가치 있는 교육을 제공해 주어야 할 것이다. The purpose of this study is to present problems revealed in the process of practice teaching for elementary school preservice teachers regarding teaching in Physical Education (PE) class and suggest measures for substantializing teaching in PE class to solve the problems. To address the goal, basic data were collected by carrying out a survey to 80 students of three majors that this researcher was teaching among the juniors of G University of Education with an open-ended questionnaire. Later, seven students understanding the purpose of this study and agreeing to participate were selected as study participants, and then, data were collected through in-depth interviews and analyzed by inductive category analysis. According to the results, problems found in practice teaching regarding teaching in PE class are lack of opportunity for teaching in PE class, the guidance teacher’s lack of expertise, teaching in PE class just for showing, difficulty in applying theories of education, lack of advice for teaching, shortage of sport facilities or equipment/tools, and lack of consideration over the students engaged in practice teaching. To solve the problems found, this author suggests measures for substantialization classifying them into the perspectives of universities, schools providing the service of practice teaching, and educational (practice) policy. Training elementary school preservice teachers is a crucial process that can determine the success or failure of elementary education, and practice teaching is an important activity of education to apply theories of education learned through university lectures actually to elementary school students and complete teacher education more holistically. Also, practice teaching provides opportunity to accumulate practical knowledge about PE class and also can play roles as an axis to anticipate the aspects of elementary physical education in the future at the same time. Therefore, practice teaching will have to provide systematic, precious, and fruitful education about teaching in PE class for elementary school preservice teachers.

The evaluation of applicability for Recycling of CRT Panel Glass by Incorporationg to Cement Bricks as Aggregates

( Jang Su Lee ),( Sung Jin Cho ),( Won Seok Yang ),( Jun Kyung Park ),( Heung Min Yoo ),( Ki Bae Lee ),( Byung Hyun Han ),( Yong Chul Seo ),( Bo Saeng Kim ),( Seong Phil Heo ) 한국폐기물자원순환학회(구 한국폐기물학회) 2012 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2012 No.-

Occurence and control of pumpkin fruit fly (Bactrocera depressa ) in a field pumpkin

Won-seok Choi,Dae-Hong Lee,Jin-Won Seo,Won-Jin Kang,Cheol Jang,Joo-Kyung Kim,Gimyeon Kwon 한국응용곤충학회 2018 한국응용곤충학회 학술대회논문집 Vol.2018 No.10

호박과실파리(Bactrocera depresaa)는 한국, 일본, 중국에 분포하는 해충으로 최근 단호박, 맷돌호박 등 호박의 수요 증가로 그 피해가 증가하는 실정이다. 이러한 호박과실파리는 성충이 호박 과실 표피를 뚫어 내부에 산란하여 유충이 과실 내부를 가해하기 때문에 처리시기를 놓치거나, 약제침투가 저조한 살충제로는 방제가 어려운 실정이다. 이에 따라 본 시험은 노지 호박 내 발생하는 호박과실파리의 방제를 위해 사이안트라닐리프롤 유제를 이용하여 경엽처리 효과를 검토하였다. 시험은 유과기에 산란하는 습성을 지닌 호박과실파리를 고려하여 암꽃이 달려 있는 유과를 대상하였으며, 성충 발생초기에 사이안트라닐리프롤 유제를 처리하여 약제처리 20일 후 피해과율 및 과실 내 유충수를 조사하였다. 조사 결과, 사이안트라닐리프롤 5% 유제를 2,000배로 성충 발생초기 7일 간격 2회 처리 시 피해과율과 유충수 조사 모두 90% 이상의 높은 방제효과를 보였다.

A study on a method for Free-Solution Capillary Electrophoresis (FSCE) using DNA conjugated with Green Fluorescent Protein (GFP)

Jang Won RO,Kyung-Ho SEO,Jong-In WON 한국생물공학회 2016 한국생물공학회 학술대회 Vol.2016 No.4

GIT1 is associated with ADHD in humans and ADHD-like behaviors in mice

Won, Hyejung,Mah, Won,Kim, Eunjin,Kim, Jae-Won,Hahm, Eun-Kyoung,Kim, Myoung-Hwan,Cho, Sukhee,Kim, Jeongjin,Jang, Hyeran,Cho, Soo-Churl,Kim, Boong-Nyun,Shin, Min-Sup,Seo, Jinsoo,Jeong, Jaeseung,Choi, S Nature Publishing Group, a division of Macmillan P 2011 Nature medicine Vol.17 No.5

Attention deficit hyperactivity disorder (ADHD) is a psychiatric disorder that affects ??% of school-aged children; however, the mechanisms underlying ADHD remain largely unclear. Here we report a previously unidentified association between G protein??coupled receptor kinase??interacting protein-1 (GIT1) and ADHD in humans. An intronic single-nucleotide polymorphism in GIT1, the minor allele of which causes reduced GIT1 expression, shows a strong association with ADHD susceptibility in humans. Git1-deficient mice show ADHD-like phenotypes, with traits including hyperactivity, enhanced electroencephalogram theta rhythms and impaired learning and memory. Hyperactivity in Git1<SUP>??/??</SUP> mice is reversed by amphetamine and methylphenidate, psychostimulants commonly used to treat ADHD. In addition, amphetamine normalizes enhanced theta rhythms and impaired memory. GIT1 deficiency in mice leads to decreases in ras-related C3 botulinum toxin substrate-1 (RAC1) signaling and inhibitory presynaptic input; furthermore, it shifts the neuronal excitation-inhibition balance in postsynaptic neurons toward excitation. Our study identifies a previously unknown involvement of GIT1 in human ADHD and shows that GIT1 deficiency in mice causes psychostimulant-responsive ADHD-like phenotypes.

Safety of a Traditional Korean Medicine, Cheonggan extracts (CGX)

Jang-Woo Shin,Jung-Hyo Cho,Dong-Seok Seo,Nak-Won Sung,Min Kwon,Chang-Gue Son 대한한의학회 2009 대한한의학회지 Vol.30 No.6

Poster Session:PS 0217 ; Gastroenterology : The Infl uence of Agent Orange to the Synchronous or Metachronous Gastric Cancer in Patients Treated by Endoscopic Submucosal Dissection

( Seo Young Yang ),( Sung Hoon Kim ),( Woong Sun Yoo ),( Do Young Kim ),( Won Hyeong Park ),( Tae Gyun Kim ),( Jisun Jang ),( Jei So Bang ),( Soo Hyun Yang ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Endoscopic submucosal dissection (ESD) is one of the therapeutic modalities for early gastric cancer. After the ESD, synchronous or metachronous lesions occur in some cases. Agent Orange (AO) is an herbicide used in the Vietnam War to defoliate forest areas. Many Korean veterans who participated in the war were exposed to it. But the infl uence of the material to stomach cancer remained uncertain. So, we investigate the infl uence of AO to the synchronous or metachronous gastric cancer in patients treated by ESD. Methods: From January 2008 to December 2012, 87 male early gastric cancer patients, including 38 AO exposure veterans, treated by ESD and followed up more than 12 months were enrolled, retrospectively. All patients were checked by gastrofi berscope and CT scan regularly for recurrence. Synchronous and metachronous lesion were defi ned as a new lesion found within 1 year and a new lesion found after 1 year of primary ESD treatment. We analyzed the relationship between the synchronous and metachronous lesion occurrence and the clinical characteristics including AO exposure. Results: The median age was 70 (52-85) and the medial follow-up duration was 25 months (12-63). Overall, synchronous lesion incidence rate was 4.6% (4 cases) and metachronous lesion incidence rate was 11.5% (10 cases). In analysis, the metachronous lesion incidence rate was higher in old age group (=65), statistically (0% vs. 14.5%, p <0.05). Otherwise, there was no relationship between the synchronous or metachronous gastric cancer occurrence and other clinical characteristics such as AO exposure, the tumor size, location, histologic and tumor type. Conclusions: Old age is suggested as a risk factor of the metachronous early gastric cancer. It is suggested that there was no infl uence of AO exposure to the synchronous and metachronous gastric cancer.

Relationship of Radical Scavenging Activities and Anthocyanin Contents in the 12 Colored Rice Varieties in Korea

Seo, Woo-Duck,Kim, Jun-Young,Han, Sang-Ik,Ra, Ji-Eun,Lee, Jin-Hwan,Song, You-Chun,Park, Mi-Jin,Kang, Hang-Won,Oh, Sea-Kwan,Jang, Ki-Chang The Korean Society for Applied Biological Chemistr 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.5

Total polyphenolic, protein, lipid, and anthocyanin contents in grains of 12 Korean colored rice varieties were evaluated for their 2,2-di(4-tert-octylphenyl)-1-picrylhydrazyl) (DPPH) and 2,2-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium (ABTS) radical- scavenging activities. Three anthocyanins, cyanidin-3-O-glucoside (Cy-3-G), petunidin-3-O-glucoside (Pt-3-G), and peonidin-3-O-glucoside (Pn-3-G), were also characterized by ultra performance liquid chromatography. Among the rice varieties, 'Heugjinju', 'Heugseol', and 'Sintoheugmi' contained high total phenolic contents compared to other varieties. Anthocyanin content was highest in 'Heugjinju'; no anthocyanins were detected in 'Hongjinju' and 'Jeogjinju'. Highest antioxidant activity was observed in 'Heugjinju' and 'Jeogjinju' exhibited the lowest activity. To determine the correlation of total polyphenolic and anthocyanin contents to antioxidant activity, linear regression analysis was carried out. The results showed total polyphenolic content was strongly correlated with antioxidant activity, suggesting total phenolic content as key factor in antioxidant activity of colored rice. 'Heugjinju', 'Heugseol', and 'Sintoheugmi' could have important nutritional value.

Implementation Strategy for the Numerical Efficiency Improvement of the Multiscale Interpolation Wavelet-Galerkin Method

Seo Jeong Hun,Earmme Taemin,Jang Gang-Won,Kim Yoon Young The Korean Society of Mechanical Engineers 2006 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.20 No.1

The multi scale wavelet-Galerkin method implemented in an adaptive manner has an advantage of obtaining accurate solutions with a substantially reduced number of interpolation points. The method is becoming popular, but its numerical efficiency still needs improvement. The objectives of this investigation are to present a new numerical scheme to improve the performance of the multi scale adaptive wavelet-Galerkin method and to give detailed implementation procedure. Specifically, the subdomain technique suitable for multiscale methods is developed and implemented. When the standard wavelet-Galerkin method is implemented without domain subdivision, the interaction between very long scale wavelets and very short scale wavelets leads to a poorly-sparse system matrix, which considerably worsens numerical efficiency for large-sized problems. The performance of the developed strategy is checked in terms of numerical costs such as the CPU time and memory size. Since the detailed implementation procedure including preprocessing and stiffness matrix construction is given, researchers having experiences in standard finite element implementation may be able to extend the multi scale method further or utilize some features of the multiscale method in their own applications.