폴리머 시멘트 콘크리트 보의 휨거동

신영수,연규석,김남길 강원대학교 석재복합신소재제품연구센터 2001 석재연 논문집 Vol.6 No.-

본 연구는 압축강도 390kgf/㎠를 갖는 폴리머 시멘트 콘크리트를 제작하여 이에 대한 역학적 성질을 구명하고, 등가직사각형 응력분포 특성을 고찰하기 위해 C형 공시체에 대한 휨압축시험을 실시하여 매개변수는 각각 α=0.69, β=0.41, k1=0.82, k3=0.95, g=0.84로 산출되었다. 이러한 매개변수를 이용하여 구해지는 보의 저항모멘트와 시험에 의한 휨모멘트는 어느 정도 근접하게 나타나 비슷한 강도수준의 폴리머 시멘트 콘그리트 휨부재 설계의 기초자료로 이용될 수 있을 것이다. 그러나 철근보강 폴리머 시멘트 콘크리트 휨 부재에 대한 보다 정확한 설계기준의 마련을 위해서는 압축강도와 크기를 변수로 하는 C형 시험체에 대한 보다 많은 실험 데이터가 필요할 것으로 사료된다. This study was conducted to analyze distribution of rectangular stress block for polymer cement concrete beam. C-shaped specimens were produced and tested to compute the parameters of rectangular stress block. Computed parameters were α=0.69, β=0.41, k1=0.82, k3=0.95 and g=0.84. Experimental value of flexural strength of the beam was in good agreement with the theoretical value, but many experimental data were thought to be filed up to provide the data for designing the polymer cement concrete structure exactly.

내구성 증진을 위한 콘크리트 구조물의 표면보강 기술개발

신영수,김남길 강원대학교 부설 석재복합신소재 제품연구센터 2002 석재연 논문집 Vol.7 No.-

본 연구에서는 콘크리트 구조물의 내구성을 증진시킬 목적으로 구조물 표면에 2종류의 혼화제를 이용하여 도포 및 침적한 후 그에 대한 강도, 흡수율 및 내약품성에 미치는 요인을 실험적으로 검토한 결과, MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 휨 및 압축강도는 도포회수의 증가 및 침적시간의 경과에 따라 증가하는 경향을 나타냈다. MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 흡수율은 도포회수의 증가 및 침적시간의 경과에 따라 감소하는 경향을 보였다. MMA 및 BP를 도포 및 침적한 시멘트 모르타르의 중량변화는 약액의 종류에 관계없이 침적시간이 경과함에 따라 감소하는 경향을 나타냈다. In this study, the effects of the number of coat and immersion period on strength properties, waterproofness and chemical resistance of coated and immersed cement mortars using two admixture were examined. Test results showed that the flexural and the compressive strengths of the coated and immersed cement mortars increase with increasing number of coat and immersion period. The water absorption of the painted and immersed cement mortars tended to decrease with increasing number of coating and immersion period. In the case of the change of weight and the immersion period for the solutions, a decreasing tendency was shown as the immersion period increases regardless of solution, with a little variation.

유기농업에서의 작물의 양분관리

안난희, 신재훈, 옥정훈, 이상민, 김석철, 사동민 忠北大學校 農業科學硏究所 2016 農業科學硏究 Vol.32 No.2

Soil fertility is fundamental in determining the productivity of all farming systems and is most�ﾠ�ﾠ commonly defined in terms of the ability of the soil to supply nutrients to crops. Organic farming systems rely on the management of soil organic matter to enhance the chemical, biological and physical properties of the soil, in order to optimize crop production. Organic agriculture excludes the use of chemical nitrogen fertilizers, instead requiring a balance between supply and demand nutrients through the use of organic matter. Nutrient management is one of the main challenges facing organic farming. The short term challenge is supplying sufficient nutrients to crops at the correct point in their development to achieve economically viable yield, while in the long term, the difficulty is to balance nutrient inputs and runoffs to avoid nutrient rundown or environmental pollution. This paper reviews information from the literature to investigate strategies of managing nutrients by supplying organic matter in organic agriculture during the major phases of crop growth.

초등과학 탐구수업 지도자료의 활용 실태

신영준,장명덕,배진호,권난주,여상인,이희순,노석구 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2

In this study, we had tried to present a plan for improving the actual conditions of practical utilization of teaching material for 6th grade science developed by Ministry of Education & Human Resources Development and distributed to all elementary schools in Korea. Also we presented ways of better utilization of the teaching material after investigating the actual conditions of practical utilization. A survey was made to investigate and collect all data in the major metropolitan cities, the Kangwon, Chungcheong, Honam, and Kyeongsang area, respectively. We surveyed 316 6th grader teachers to investigate the actual conditions of distribution and utilization of teaching material as a general research. In addition, we surveyed 46 teachers to investigate the organization and content of teaching material as a particular research. The results are as follows. First, the teaching material was not approximately transmitted and kept to 6th grader teachers. Second, the utilization guide was not made. Third, it was reported that the thematic divisions of teaching material was a strong point, but the less detailed experiment manual was a weak point. Fourth, the consideration of content difficulties and simplicity was necessary to improve the material. Fifth, additional items should be included in the introductory presentation, convenience of reorganization, activity material causing learning interest, guidance of substitution experiment, and more concrete notice of experiment activity. Finally, there were positive responses of more than 4.0 point of Likert scale (1 to 5 point scale) in detail investigations of thematic items, which could have possibility that the teaching material was helpful to elementary school science field.

국내 보완·대체 치료 간호학 논문의 연구동향 분석

양난영,신경림 성인간호학회 2003 성인간호학회지 Vol.15 No.2

This study is to analyze the research rends centering on the theses related to CAT released in nursing of Korea. Method: The researcher collected the academic degrees and theses published on the book of the academic society from 1980 to 2001, and examined 88 domestic dissertations on nursing science of the CAT. Result: 1) By department, the results were: the nursing thesis 88(43.3%), medical field 45(22.1%), psychologyㆍconsulting education 28(14%). 2) In the type of the CAT in nursing, the results were: acupressure 28(31.5%), Dan-Jeon Breathing 14(15.7%) aroma therapy 5(5.6%) in order. 3) The number of theses increase every year after 1997. 4) As for the type of study design, the results were: the experimental research had the most(47), and the survey research(30). 5) As for the subject, the results were: patients with disease(44), healthy adults(29), literate(9) and medical staff were only 6 theses. 6) in the theme of the theses, the results were: the effect of therapy(76), the experience of therapy(26), adaptation of nursing of therapy(11) and literature reviews were 7. Conclusion: More research needs to be encouraged in the unsatisfactory fields. Researches should be conducted to extend into the practical fields as Korea nursing mediation, project for the establishment of health polices should be conducted.

Evaluation of the clinical efficacy of a TW3-based fully automated bone age assessment system using deep neural networks

Nan-Young Shin,Byoung-Dai Lee,강주희,Hye-Rin Kim,Dong Hyo Oh,Byung Il Lee,Sung Hyun Kim,Mu Sook Lee,허민석 대한영상치의학회 2020 Imaging Science in Dentistry Vol.50 No.3

Purpose: The aim of this study was to evaluate the clinical efficacy of a Tanner-Whitehouse 3 (TW3)-based fully automated bone age assessment system on hand-wrist radiographs of Korean children and adolescents. Materials and Methods: Hand-wrist radiographs of 80 subjects (40 boys and 40 girls, 7-15 years of age) were collected. The clinical efficacy was evaluated by comparing the bone ages that were determined using the system with those from the reference standard produced by 2 oral and maxillofacial radiologists. Comparisons were conducted using the paired t-test and simple regression analysis. Results: The bone ages estimated with this bone age assessment system were not significantly different from those obtained with the reference standard (P>0.05) and satisfied the equivalence criterion of 0.6 years within the 95% confidence interval (- 0.07 to 0.22), demonstrating excellent performance of the system. Similarly, in the comparisons of gender subgroups, no significant difference in bone age between the values produced by the system and the reference standard was observed (P>0.05 for both boys and girls). The determination coefficients obtained via regression analysis were 0.962, 0.945, and 0.952 for boys, girls, and overall, respectively (P=0.000); hence, the radiologist-determined bone ages and the system-determined bone ages were strongly correlated. Conclusion: This TW3-based system can be effectively used for bone age assessment based on hand-wrist radiographs of Korean children and adolescents.

Steatocystoma multiplex: A case report of a rare entity

Shin, Nan-Young,Kang, Ju Hee,Kim, Jo-Eun,Symkhampa, Khantaly,Huh, Kyung-Hoe,Yi, Won-Jin,Heo, Min-Suk,Lee, Sam-Sun,Choi, Soon-Chul Korean Academy of Oral and Maxillofacial Radiology 2019 Imaging Science in Dentistry Vol.49 No.4

Steatocystoma multiplex is an uncommon benign skin disease, which typically manifests as numerous intradermal cysts that can be scattered anywhere on the body. Although usually asymptomatic, it can be significantly disfiguring. One type of steatocystoma multiplex is known to be associated with the autosomal dominant inheritance of a mutation in the gene coding for keratin 17 (KRT17). In such cases, it is often concurrent with other developmental abnormalities of the ectoderm-derived tissues, such as the nails, hair, and teeth. To the best of our knowledge, few cases have been reported of steatocystoma multiplex of the oral and maxillofacial region. This report describes a case of steatocystoma multiplex of both sides of the neck and multiple dental anomalies, with a focus on its clinical, radiological, and histopathological characteristics, as well as the possibility that the patient exhibited the familial type of this condition.

Increased Cavernous Expression of Transforming Growth Factor-β1 and Activation of the Smad Signaling Pathway Affects Erectile Dysfunction in Men with Spinal Cord Injury

Shin, Tae-Young,Ryu, Ji-Kan,Jin, Hai-Rong,Piao, Shuguang,Tumurbaatar, Munkhbayar,Yin, Guo Nan,Shin, Sun Hwa,Kwon, Mi-Hye,Song, Kang-Moon,Fang, Zheng-Huan,Han, Jee-Young,Kim, Woo Jean,Suh, Jun-Kyu John Wiley Sons Ltd 2011 The journal of sexual medicine Vol.8 No.5

Development of a Biofungicide Using a Mycoparasitic Fungus Simplicillium lamellicola BCP and Its Control Efficacy against Gray Mold Diseases of Tomato and Ginseng

Shin, Teak Soo,Yu, Nan Hee,Lee, Jaeho,Choi, Gyung Ja,Kim, Jin-Cheol,Shin, Chul Soo The Korean Society of Plant Pathology 2017 Plant Pathology Journal Vol.33 No.3

To develop a commercial product using the mycoparasitic fungus Simplicillium lamellicola BCP, the scale-up of conidia production from a 5-l jar to a 5,000-l pilot bioreactor, optimization of the freeze-drying of the fermentation broth, and preparation of a wettable powder-type formulation were performed. Then, its disease control efficacy was evaluated against gray mold diseases of tomato and ginseng plants in field conditions. The final conidial yields of S. lamellicola BCP were $3.3{\times}10^9conidia/ml$ for a 5-l jar, $3.5{\times}10^9conidia/ml$ for a 500-l pilot vessel, and $3.1{\times}10^9conidia/ml$ for a 5,000-l pilot bioreactor. The conidial yield in the 5,000-l pilot bioreactor was comparable to that in the 5-l jar and 500-l pilot vessel. On the other hand, the highest conidial viability of 86% was obtained by the freeze-drying method using an additive combination of lactose, trehalose, soybean meal, and glycerin. Using the freeze-dried sample, a wettable powder-type formulation (active ingredient 10%; BCP-WP10) was prepared. A conidial viability of more than 50% was maintained in BCP-WP10 until 22 weeks for storage at $40^{\circ}C$. BCP-WP10 effectively suppressed the development of gray mold disease on tomato with control efficacies of 64.7% and 82.6% at 500- and 250-fold dilutions, respectively. It also reduced the incidence of gray mold on ginseng by 65.6% and 81.3% at 500- and 250-fold dilutions, respectively. The results indicated that the new microbial fungicide BCP-WP10 can be used widely to control gray mold diseases of various crops including tomato and ginseng.

탈북이주민의 사회통합을 위한 문화적 이해: 기숙형 탈북 아동 방과후 공부방 사례를 중심으로

신난희 ( Shin Nan Hee ) 아시아문화학술원 2017 인문사회 21 Vol.8 No.3

본 논문은 한국사회에 국민의 신분을 갖는 이주민이 증가하면서 사회적 갈등도 함께 증가하는 현상을 주목한다. 본 논문은 이주민의 사회통합 현상을 다룸에 있어서 이주민에게 일어나는 사회문제는 이주민 개인 혹은 이주민집단에 의해서만이 아니라 이주민이 적응하는 주류사회와의 상호작용 속에서 발생한다는 관점을 취한다. 둘째, 주류사회로의 이주민 사회통합을 논의하기 위해서는 이주민 및 이주민사회에 관한 문화적 이해가 선행되어야 한다는 관점을 취한다. 본 논문은 이러한 관점에서 탈북이주민에 대한 한국사회의 맥락, 탈북이주민과 한국지원기관 간의 상호작용을 분석하고 이 과정에 작동하는 탈북이주민의 가치 및 행위 양상에 관하여 기숙형 탈북 아동 방과후 공부방 사례를 중심으로 살펴보고자 한다. 분석에 의하면, 지난 십여 년 동안 탈북이주민지원정책은 동화주의 및 도구주의적 패러다임에 기초하여 진행되었다. 탈북이주민은 한국사회 주류 지원세력의 탈북이주민 지원패러다임에 영합하거나 과잉 동화하는 방식으로 생존 전략을 구사하였다. 이 과정에서 탈북이주민은 한국사회의 가치와 행위 양식을 형식적으로 차용하면서 북한사회 및 디아스포라이주과정에서 내면화하고 습득한 가치, 문화요소, 행위양식을 확대, 강화하며 복합적인 문화적 적응양상을 창출하였다. 탈북이주민이 활용한 한국사회 지원제도의 틈새는 지원패러다임과 정책 제도의 형식적 차원으로 제도의 합법성 속에서 사적인 전용과 이익 실현을 추구하는 것이었다. This paper focuses on the fact that social conflicts increase as the number of immigrants who have the status of citizens in Korean society increases. Dealing with the social integration of migrants. this paper takes the viewpoint that social problems that occur to immigrants occur not only by migrants themselves or immigrant groups, but also in interaction with immigrants` mainstream society, and the second viewpoint, in order to discuss the integration of migrants into the mainstream society, it is necessary to prioritize cultural consideration of migrants and migrant communities. This paper analyzes the interrelationships between the North Korean migrants and the Korean support organizations in the context of Korean society, and discusses the values and behaviors of North Korean migrants working in the process. According to the analysis, over the past decade, the policy to support North Korean defectors has been based on an assimilationism and instrumental paradigm. The North Korean migrants had to accomodate to the paradigm and systems of mainstream support of Korean society or had to over-assimilate them. In this process, the North Korean immigrants formally embraced the values and behavior style of Korean society and expanded and strengthened the values, cultural elements and modes of behavior internalized and acquired in the North Korean society and diaspora migration process, creating a complex cultural adaptation pattern. The gap in the Korean social support system utilized by North Korean immigrants was the formal dimension of the support paradigm and policy system, in pursuit of privatization and profit realization in the legitimacy of the system.