영동 국악체험촌 조경기본계획

"이시영", "박진아", "련등", "김대수" 배재대학교 자연과학연구소 2015 自然科學論文集 Vol.26 No.1

21세기는 지식 정보화와 병행하여 문화의 세기가 될 것으로 예견된다. 문화상품의 고부가가치를 창출하기 위하여 영동군이 보유하고 있는 국악 인프라와 연계하여 국가 문화산업의 전략적 우위를 도모하고 전통문화의 전승과 발전에 일익을 담당코저 한다. 난계 박연 선생의 탄생지인 심천면 고당리 일원에 국악을 테마로 하는 체험촌 조성이 필요하였다. 영동군에서는 한국의 정신세계를 재조명하고 전통문화에 대한 이해와 접근이 용이한 관광자원으로 국악체험촌을 건립하여 관광명소를 육성하고자 한다. The 21st century is predicted to be the century of knowledge and information and culture. To create high value of cultural goods, in conjunction with Korean Classical Music infrastructures which Yeongdong County has, this proposal was planning to be contributed to the development of traditional culture and folklore. Yeongdong County revisited in the spirit world and build an understanding of Korea and Experience Music Village with easy access to the traditional culture and tourist resources and to foster the attractions.

A study on low-velocity impact damage of Z-pin reinforced laminates

Jin Teng,Zhuo Zhuang,Bintai Li 대한기계학회 2007 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.21 No.12

Based on a low-velocity impact test, four main modes of low-velocity impact damage, including matrix cracking, de-laminating, fiber failure and matrix crushing, are taken into account. By using the proper failure criterion, the low-velocity impact damage of z-pin reinforced laminates can be realized. The results of FEM simulation, which indicate that a z-pin makes the area of delamination reduced by approximately 50%, are in good agreement with the experimental C-scan results.

Developmental Hypothyroidism Influences the Development of the Entorhinal-Dentate Gyrus Pathway of Rat Offspring

Ting Jin,Ranran Wang,Shiqiao Peng,Xin Liu,Hanyi Zhang,Xue He,Weiping Teng,Xiaochun Teng 대한내분비학회 2022 Endocrinology and metabolism Vol.37 No.2

Background: Developmental hypothyroidism impairs learning and memory in offspring, which depend on extensive neuronal circuits in the entorhinal cortex, together with the hippocampus and neocortex. The entorhinal-dentate gyrus pathway is the main entrance of memory circuits. We investigated whether developmental hypothyroidism impaired the morphological development of theentorhinal-dentate gyrus pathway. Methods: We examined the structure and function of the entorhinal-dentate gyrus pathway in response to developmental hypothyroidism induced using 2-mercapto-1-methylimidazole. Results: 1,1´-Dioctadecyl-3,3,3´,3´-tetramethylindocarbocyanine perchlorate tract tracing indicated that entorhinal axons showeddelayed growth in reaching the outer molecular layer of the dentate gyrus at postnatal days 2 and 4 in hypothyroid conditions. Theproportion of fibers in the outer molecular layer was significantly smaller in the hypothyroid group than in the euthyroid group atpostnatal day 4. At postnatal day 10, the pathway showed a layer-specific distribution in the outer molecular layer, similar to the euthyroid group. However, the projected area of entorhinal axons was smaller in the hypothyroid group than in the euthyroid group. Anelectrophysiological examination showed that hypothyroidism impaired the long-term potentiation of the perforant and the cornuammonis 3–cornu ammonis 1 pathways. Many repulsive axon guidance molecules were involved in the formation of the entorhinaldentate gyrus pathway. The hypothyroid group had higher levels of erythropoietin-producing hepatocyte ligand A3 and semaphorin3A than the euthyroid group. Conclusion: We demonstrated that developmental hypothyroidism might influence the development of the entorhinal-dentate gyruspathway, contributing to impaired long-term potentiation. These findings improve our understanding of neural mechanisms formemory function.

Heavy concrete shielding properties for carbon therapy

Jin-Long Wang,Jiade J Lu,Da-Jun Ding,Wen-Hua Jiang,Ya-Dong Li,Rui Qiu,Hui Zhang,Xiao-Zhong Wang,Huo-Sheng Ruan,Yan-Bing Teng,Xiao-Guang Wu,Yun Zheng,Zi-Hao Zhao,Kai-Zhong Liao,Huan-Cheng Mai,Xiao-Dong Korean Nuclear Society 2023 Nuclear Engineering and Technology Vol.55 No.6

As medical facilities are usually built at urban areas, special concrete aggregates and evaluation methods are needed to optimize the design of concrete walls by balancing density, thickness, material composition, cost, and other factors. Carbon treatment rooms require a high radiation shielding requirement, as the neutron yield from carbon therapy is much higher than the neutron yield of protons. In this case study, the maximum carbon energy is 430 MeV/u and the maximum current is 0.27 nA from a hybrid particle therapy system. Hospital or facility construction should consider this requirement to design a special heavy concrete. In this work, magnetite is adopted as the major aggregate. Density is determined mainly by the major aggregate content of magnetite, and a heavy concrete test block was constructed for structural tests. The compressive strength is 35.7 MPa. The density ranges from 3.65 g/cm³ to 4.14 g/cm³, and the iron mass content ranges from 53.78% to 60.38% from the 12 cored sample measurements. It was found that there is a linear relationship between density and iron content, and mixing impurities should be the major reason leading to the nonuniform element and density distribution. The effect of this nonuniformity on radiation shielding properties for a carbon treatment room is investigated by three groups of Monte Carlo simulations. Higher density dominates to reduce shielding thickness. However, a higher content of high-Z elements will weaken the shielding strength, especially at a lower dose rate threshold and vice versa. The weakened side effect of a high iron content on the shielding property is obvious at 2.5 µSv=h. Therefore, we should not blindly pursue high Z content in engineering. If the thickness is constrained to 2 m, then the density can be reduced to 3.3 g/cm³, which will save cost by reducing the magnetite composition with 50.44% iron content. If a higher density of 3.9 g/cm³ with 57.65% iron content is selected for construction, then the thickness of the wall can be reduced to 174.2 cm, which will save space for equipment installation.

알칼리환원수 음용이 급성 염증성장질환 생쥐 모델에 미치는 영향

김단,김동희,등영건,최주봉,이규재 韓國電子顯微鏡學會 2008 Applied microscopy Vol.38 No.2

알칼리환원수 (Alkaline Reduced Water: ARW)는 아시아를 비롯한 여러 나라에서 음용수로 사용되고 있으며 항산화효과와 장내이상발효 개선효과 등을 중심으로 안전성과 유효성의 검증이 이루어지고 있다. 본 연구에서는 알칼리환원수가 급성 염증성대장질환 (Inflammatory Bowel Disease: IBD) 동물모델에 미치는 영향을 알아보기 위해, ARW를 2주 동안 급이 시킨 후 4% DDS로 염증성 대장염을 유발시키고 대장의 길이와 조직병리학적 변화를 관찰하였다. 그 결과 대장의 길이와 육안적, 현미경적 질환점수의 수치가 대조군과 비교하여 유의한 차이를 나타내지 않았다. 이 결과는 DSS로 유도된 급성 염증성장질환 모델에서는 2주 동안의 ARW 급이가 개선효과를 나타내지 않았음을 말해준다. 그러나 ARW 가 장내환경을 개선시키고 위장관의 질환을 개선시키는 효과가 있음을 고려해볼 때 급성 IBD 동물모델이 ARW의 효과를 증명하기에 적합하지 않았거나 MARW의 급이기간이 장내환경을 개선할 만큼 충분히 길지 않았을 가능성을 추측해 볼 수 있다. 알칼리환원수의 장내이상발효 개선효과는 확인되고 있으나 그 기전은 아직까지 구체적으로 확인되어지지 않고 있다. 이번 연구결과에 의하면 인위적으로 유발시킨 급성 염증성 동물모델에서 ARW가 유의한 영향을 미치지 않았지만, 다른 장질환 모델을 이용한 효과 검증과 ARW의 장기 급이에 따른 효과, 그리고 ARW 가 장내환경에 미치는 작용기전에 대한 연구가 더 깊이 있게 이루어져야 할 것으로 사료된다. Alkaline reduced water (ARW) has been used for drinking widely in several countries of Asia. The safety and clinical effects of ARW has been reported including anti-oxidative effect and intestinal abnormal fermentation. To confirm the effect of ARW on DSS-induced acute inflammatory bowel disease (IBD) mouse model, we observed the length of total large intestine and the histopathological changes after supplying mineral induced-ARW (MARW) for 2 weeks and oral administration of 4% DSS (dextran sulfate sodium). As the result, the length of total large intestine and the disease scores by macro and microscopical access in the ARWsupplied group showed no significant differences compared with those in the control group. This result suggests that the supply of ARW for 2 weeks exerted no effect on amelioration in the DSS-induced acute IBD model. However, in consideration of the effect of ARW on the improvement of intestinal environment and gastrointestinal disease, this result seems that acute IBD animal model is not suitable or the period of ARW supply is not enough to prove the effect of ARW. The ameliorative effect of ARW on the intestinal abnormal fermentation has been confirmed by some researchers, but the precise mechanism also remain unclear. In conclusion, although MARW had no effect on the DSS-induced acute experimental colitis model, further studies on the verification of the effects of ARW by using other intestinal disease model and by long-term supply of ARW will be required. Also, It needs to clear the mechanism of ARW on the intestinal environment.

Embossed Structural Skin for Tall Buildings

Song, Jin Young,Lee, Donghun,Erikson, James,Hao, Jianming,Wu, Teng,Kim, Bonghwan Council on Tall Building and Urban Habitat Korea 2018 International journal of high-rise buildings Vol.7 No.1

This paper explores the function of a structural skin with an embossed surface applicable to use for tall building structures. The major diagrid system with a secondary embossed surface structure provides an enhanced perimeter structural system by increasing tube section areas and reduces aerodynamic loads by disorienting major organized structure of winds. A parametric study used to investigate an optimized configuration of the embossed structure revealed that the embossed structure has a structural advantage in stiffening the structure, reducing lateral drift to 90% compared to a non-embossed diagrid baseline model, and results of wind load analysis using computational fluid dynamics, demonstrated the proposed embossed system can reduce. The resulting undulating embossed skin geometry presents both opportunities for incorporating versatile interior environments as well as unique challenges for daylighting and thermal control of the envelope. Solar and thermal control requires multiple daylighting solutions to address each local façade surface condition in order to reduce energy loads and meet occupant comfort standards. These findings illustrate that although more complex in geometry, architects and engineers can produce tall buildings that have less impact on our environment by utilizing structural forms that reduce structural steel needed for stiffening, thus reducing embodied $CO^2$, while positively affecting indoor quality and energy performance, all possible while creating a unique urban iconography derived from the performance of building skin.

Antimonene prepared by laser irradiation applied for nonlinear optical limiting

Weili Shen,Jinning Hu,Teng Ma,Jiaxin Wang,Yi Wei,Yuanzhou Zhang,Jinqiang Wu,Jun Chen 대한금속·재료학회 2021 ELECTRONIC MATERIALS LETTERS Vol.17 No.6

Antimonene, a novel two-dimension (2D) Group-VA material, shows excellent electrical and optical properties. In this work,antimonene nanosheets or nanoparticles were obtained by laser irradiating antimony powder in isopropanol solution anddiff erent morphology of antimonene were obtained by adjusting diff erent laser irradiation parameters, including irradiationtime and irradiation energy. The nonlinear absorption properties of antimonene with diff erent morphologies under 532 nmnanosecond laser were studied by Z-scan technology. It was found that the reverse-saturation absorption ability was thestrongest when the morphology of the sample was nanosheets, which was very suitable for optical limiting. In addition, dueto the limitation of the application of the sample in the form of solution, we added it into organosilicon, and obtained thesolid antimonene-organosilicon composite with optical limiting function. The results showed that antimonene nanosheetswith best optical limiting ability can be prepared by adjusting the laser irradiation parameters, and the products are successfullyadded into solid matrix to enhance its practicability in protecting people’s eyes and optical equipment from damagecaused by high power laser.

Robust Fault Tolerant Tracking Control Design for a linearized Hypersonic Vehicle with Sensor Fault

Zhi-Feng Gao,Jin-Xing Lin,Teng Cao 제어·로봇·시스템학회 2015 International Journal of Control, Automation, and Vol.13 No.3

In this study, the robust fault tolerant tracking problem is investigated for a linearized hypersonic vehicle model with the bounded external disturbance and the sensor fault. Firstly, the nonlinear longitudinal dynamics of hypersonic vehicle is linearized as a linear time-invariant system with sensor fault, a reference model is introduced for the aim of fault tolerant tracking control. And then an observer- based fault tolerant output feedback tracking controller design approach is proposed by using the linear matrix inequalities (LMIs) technique. The asymptotic stability of the whole closed-loop system is analyzed using the well-known Lyapunov stability method. Finally, the simulation results are presented to verify the applicability of the developed fault tolerant approach.

Characterization of siderophore produced by Pseudomonas syringae BAF.1 and its inhibitory effects on spore germination and mycelium morphology of Fusarium oxysporum

Sumei Yu,Chunying Teng,Jinsong Liang,Tao Song,Liying Dong,Xin Bai,Yu Jin,JuanJuan Qu 한국미생물학회 2017 The journal of microbiology Vol.55 No.11

In this study, an antagonistic bacterium against Fusarium oxysporum was identified and designated as Pseudomonas syringae strain BAF.1 on the basis of 16S rDNA sequence analysis and physiological-biochemical characteristics. It produced catechol-species siderophore at a molecular weight of 488.59 Da and a maximum amount of 55.27 μg/ml with glucose as a carbon source and asparagine as a nitrogen source at a C/N ratio of 10:1, 30°C and pH 7. The siderophore exhibited prominent antagonistic activity against Fusarium oxysporum with a maximum inhibition rate of 95.24% and had also suppressive effects on other kinds of 11 phytopathogenic fungi in the absence of FeCl3·6H2O. Spore germination was completely inhibited by 50 μl of the siderophorecontaining solution, and the ultrastructures of mycelia and spores were also considerably suppressed by siderophore treatment as established by electron microscopy observation. These results indicate that the siderophore produced by Pseudomonas syringae BAF.1 could be potentially used for biocontrol of pathogenic Fusarium oxysporum.

Evaluation of Electrospinnability of Celluloses Derived from Different Biomass Resources

Yanhua Chen,Na Teng,Haizhen Chen,Jing Chen,Fei Liu,Haining Na,Jin Zhu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.5

Electrospinnability as well as dissolvability of the celluloses derived from different biomass resources are systematically studied in this work. By analyzing the essentially physical and molecular structure of cellulose in detail, dissolving efficiency and molecular chain entanglement in solution of cellulose are carefully realized. Accordingly, the original factors on electrospinnability of cellulose is revealed. Crystallinity mainly affects the dissolution of cellulose, which is the foundation to achieve electrospinning. Degree of polymerization is the decisive index of cellulose to form molecular entanglement in solution or not. Proper molecular entanglement of cellulose, just as corn cellulose II, could initiate the formation of ultrafine fiber with good morphology in electrospinning. Our research is no doubt helpful to establish a solid scientific and technical foundation for selection of cellulose to achieve high efficiency fabrication of ultrafine fiber in electrospinning.