• Journal of Acupuncture Research
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• v.20 no.4
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• pp.180-191
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• 2003

Objective & Methods : Experimental studies were done to research the clinical effects of Juglandis Semen aqua-acupuncture and acupuncture($BL_{13}{\cdot}BL_{17}$) on the anti-allergic response. anaphylaxis provoked by the compound48/80, delayed type hypersensitivity response to picryl chloride and SRBC and inflammation response to egg albumin. Results : The following results have been obtained; 1. Juglandis Semen aqua-acupuncture and acupuncture($BL_{13}{\cdot}BL_{17}$) group were increased the survival rate in compound 48/80 induced systemic anaphylactic reaction. 2. Picryl chloride induced contact dermatitis and delayed type hypersensitivity in SRBC challenged mouse were significantly decreased in Juglandis Semen aqua-acupuncture and acupuncture($BL_{13}{\cdot}BL_{17}$) group. 3. Inflammation response-WBC, CRP and Nitric Oxide in egg albumin induced allergic rat were significantly decreased in Juglandis Semen aqua-acupuncture and acupuncture($BL_{13}{\cdot}BL_{17}$) group. Conclusions : According to the above results, Semen aqua-acupuncture and acupuncture($BL_{13}{\cdot}BL_{17}$) both depress the allergy reaction.

• The Journal of the Acoustical Society of Korea
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• v.14 no.2
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• pp.80-91
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• 1995

A theoretical models has been prepared which describes the noise generated by tire/road interaction for the tire structure-borne sound analysis. The model begin with a set of thin shell equations describing the motion of the belt of a radial ply tire, as drived by Bohm('mechanisms of the belted tire', Igeniur-Archiv, XXXV, 1966). Structural quantities required for these equations are derived from material properties of the tire. The rolling shape of a tire is computed from the steady-state limit of these equations. Vibrational response of the tire is treated by the full dependent shell equations. The force input at the tire/road interface is calculated on the basis of tread geometry and distribution of contact patch pressure. Radiation of noise is calculated by a simpson integral. Using the programs, the effect on noise of various tire design variations is computed and discussed. Trends which lead to quiet tire design are identified.

• International Journal of Precision Engineering and Manufacturing
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• v.3 no.3
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• pp.37-43
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• 2002

Electronic speckle contouring(ESC) based on electronic speckle pattern interferometry is the optical method for measuring object shape by using fringe-projection techniques. This method has the advantages of being non-contact, non-destructive and a whole-field measurement of the surface under investigation. Fringes in ESC represent the difference in depth along the view direction between the master wavefront and the test component. The contour maps of three-dimensional diffuse objects can be obtained by small shifts of optical fiber carrying the dual-object-beams and 4-frame phase shifting. In this study we proposed the contouring method by shifting the collimated illumination beams through optical fiber in order to obtain the contour fringe patterns. And also, we performed the addition of incremental images through the geometrical analysis to obtain the contour fringe interval when we performed the incremental addition of images and experiments based on this method. We obtained both quantitative increment without decorrelation effect and qualitative improvement by reducing the noise of contour fringes.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.28 no.1
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• pp.42-47
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• 2016

Adjacent housing units suffer inevitable thermal losses if an unheated unit exists in an apartment building. Thermal loss of the units adjoining the unheated apartment can be neglected because the contact area is small and insulators are located in the walls. When insulators are not included in the slab between the upper and lower units, 70% of the heat supplied by an Ondol system may be used in the original unit, but 30% is transferred to the unit on the lower floor. Another 30% can be obtained from the ceiling if the upper floor housing unit is heated. This strong thermal connection is a characteristic of Ondol heating in apartment buildings. When there is an unheated unit, the lower floor unit uses 42.3% more heating energy if there is no insulation and 19.5% if a 35 mm insulator is used as in the current guidelines. Therefore, much thicker insulation should be applied to weaken the thermal connection.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.03a
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• pp.1250-1253
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• 2008

As a reinforcement technique, the application of removable soil nailing has been extended to solve the public grievance of typical soil nailing such as the geotechnical environmental problem and invasion of adjacent land. In the case of removable soil nailing, pullout capacity of the nail depends on the adhesive strength of a fixed socket. Because the existing fixed socket is made from a plastic product, the strength of a socket is less than a steel bar and then the yield failure by abrasion and deformation is occurred on the steel bar-socket contact surface. In this study, therefore, experimental analysis from laboratory test of a removable soil nail equipped with steel socket, improving the adhesive strength of steel bar-socket connection is performed to estimate the increase effect of pullout capacity of a soil nail.

• Journal of the Korea Institute of Building Construction
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• v.9 no.1
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• pp.49-55
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• 2009

In this study, reduction methods of surface air void were examined for high performance concrete having high viscosity. The effects of assumed influencing factors such as form types, form-coating materials, tamping equipments and methods were examined based on the tests on mock-up specimens made of high performance concrete. The test results can be summarized as follows: As for form types, the most favorable results were obtained when coated plywood form was used with panel-shape tamping equipments at the contact region with concrete, the second and the third being the water/air-permeable sheets and steel with coated plywood, respectively. As for tamping equipments, a vibrator with 6.5cm diameter was most effective. Finally, the shorter the tamping intervals, the better the reduction effect of surface air void. As a conclusion, an improved method was proposed to reduce surface air void and it was verified with the test result that only four air voids as large as $5{\sim}10mm$ are found in the are of $1m^2$.

• Journal of the Korean Ceramic Society
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• v.45 no.2
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• pp.119-125
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• 2008

The FAS(Fluoroalkylsilane)/Nafion inorganic-organic composite electrolyte membrane was successfully fabricated through sol-gel method. The FAS having hydrophobic functional group and silanol ligands is impregnated in $Nafion^{(R)}$ membrane to reduce methanol crossover. The prepared FAS/Nafion inorganic-organic composite electrolyte membrane consist of the hydrophobic FAS-derived silicate nano-particles and $Nafion^{(R)}$ matrix showed decrease of methanol crossover and reduction of humidity dependence without large sacrifice of proton conductivity. The microstructural analysis of the composite membranes was performed using FESEM and FTIR. And the effect of the incorporation of the hydrophobic FAS-derived silicate nano-particles into $Nafion^{(R)}$ membrane was investigated via solvent uptake, membrane expansion rate, humidity dependency of proton conductivity and contact angle measurement.

• Journal of The Korean Digital Architecture Interior Association
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• v.9 no.3
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• pp.37-45
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• 2009

New city development policy caused many effects such as destruction of nature and area native culture extinction through fast development within short period. The architectural context is remains by post-modern most difficult problem had left to architects. We need to find the design method that communicate and contacts character of place, cultural context through the actual project. In this study, we propose the method of aspect of compose space and design elements to succeed the cultural place and context, desirable development through the design proposal for Dochon welfare center. In Dochon area, there is no original character of the place because of indiscreet development. Dochon synthesis society welfare facilities is openable to people by space that nature and human contacts and accomplishes relation, Made efforts to do so that can do part that causes human's ripple effect of contact with human and accomplishes traffic and recovers identity of Dochon area at the same time recovery of community consciousness.

• 한국정보디스플레이학회:학술대회논문집
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• 2005.07b
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• pp.1361-1363
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• 2005

In this paper, we report on the performance stability of solution processible OTFT devices with Au/Ti and ITO source-drain (S/D) electrodes. It appears that the contact resistance of the S/D electrode strongly affects the stability of OTFT devices. Interestingly, the devices with the Au/Ti electrode showed lower mobility than those with the ITO (S/D) devices. The field effect mobilities of the devices with the Au/Ti and ITO electrodes were 0.06, and $0.44cm^2/Vs$, respectively. However, the mobility of the device with the Au/Ti electrode was increased up to $0.26cm^2/Vs$ after 2 weeks, while the mobility of the device with ITO electrode was slightly decreased down to $0.41cm^2/Vs$. The experimental data show us that ITO could be used as the S/D electrode for low-cost OTFT devices.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2008.11a
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• pp.82-82
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• 2008

One-dimensional (1D) nanowires have been received much attention due to their potential for applications in various field. Recently some logic applications fabricated on various nanowires, such as ZnO, CdS, Si, are reported. These logic circuits, which consist of two- or three field effect transistors(FETs), are basic components of computation machine such as central process unit (CPU). FETs fabricated on nanowire generally have surrounded shapes of gate structure, which improve the device performance. Highly integrated circuits can also be achieved by fabricating on nano-scaled nanowires. But the numerical and SPICE simulation about the logic circuitry have never been reported and analyses of detailed parameters related to performance, such as channel doping, gate shapes, souce/drain contact and etc., were strongly needed. In our study, NAND and NOT logic circuits were simulated and characterized using 2- and 3-dimensional numerical simulation (SILVACO ATLAS) and built-in spice module(mixed mode).