• 한국한의학연구원논문집
• /
• 제17권3호
• /
• pp.87-96
• /
• 2011

Objectives : The study on the affected factor of the pulse wave is important in the pulse wave part. The purpose of this study is to secure the objective data of pulse-wave parameter on the food intakes affected the radial pulse-wave. Methods : The study was carried out healthy adult men. We researched the blood circulation index and the changes of the pulse factor according to 'before meal', 'right after meal', '30 minute after meal', '1 hour after meal' and '2 hours after meal'. We analyzed the changes according the time schedule. And analyzed the difference between 'before meal' and 'after meal'on the pulse-wave parameter. Results : The results were as follows. 1. HR, ECO and ECI were showed the highest increase 'after meal' and the significant decrease in '2 hours after meal' with 'before meal' degree. 2. In the pulse energy, 'left hand average pulse energy' was showed the highest increase 'after meal', and 'right hand average pulse energy' and 'right Quan(關)' were showed the highest increase in '30 minute after meal'. 3. h1 of '6 part of left and right hand'(Chon-Quan-Chuk, 寸關尺) was showed the significant difference statistically in 'left Chuk' and 'right Quan'. 4. T was showed the highest 'before meal' and the lowest after meal in '6 part of left and right' (Chon-Quan-Chuk, 寸關尺). 5. RAI was showed the highest 'before meal' in '6 part of left and right'(Chon-Quan-Chuk 寸關尺). Conclusions : From the about results, the food intakes was considered important factor of pulse formation. On the factor affected the pulse, we considered that continuous study needs for the future.

• 생물환경조절학회지
• /
• 제20권1호
• /
• pp.8-13
• /
• 2011

본 연구는 피복재 종류에 따른 착색단고추의 생육 및 생산성에 대한 지하부 환경 요인의 영향 정도를 알아보았다. 조사 기간 동안 배양액 공급량은 플라스틱 필름온실에서는 $5,404L{\cdot}m^{-2}$로 유리온실의 $3,483L{\cdot}m^{-2}$보다 1.6배나 많았다. 그러나 배양액 흡수율은 두 온실에서 71.3~73.3%로 유사한 수준이었다. 배지 EC도 $4.17{\sim}4.23dS{\cdot}m^{-1}$ 수준으로 큰 차이를 나타내지 않았다. 정단부에서 아래로 6번째 잎의 면적은 유리온실에서 평균 $123.0cm^2$/1eaf로 플라스틱필름온실의 $119.5cm^2$/1eaf보다 다소 넓었다. 그러나 잎의 생체중, 건물중 및 건물률은 두 온실 간 뚜렷한 차이를 나타내지 않았다. 주간 생산량은 유리온실에서 $850g{\cdot}m^{-2}$로 플라스틱필름온실의 $650g{\cdot}m^{-2}$보다 1.3배정도로 많았다. 하지만 조사 기간 동안 잎의 면적 및 건물률, 그리고 생산량 모두에 대한 배지 EC와 배양액 흡수율 차이에서 오는 영향은 두 온실 간 뚜렷한 차이를 나타내지 않았다. 따라서 피복재 및 지상부 환경이 다른 온실에서 착색단고추 수경재배 시 생육 및 생산성 차이에 대한 지하부 요인의 영향은 거의 없는 것으로 판단된다.

• 대한인간공학회지
• /
• 제19권1호
• /
• pp.109-125
• /
• 2000

The purpose of this study was to provide basic data for a more functional torso's pattern by analyzing multidimensional anthropometric measurements and the wearing condition. For the functional torso's pattern drafting, the fitness state of basic torso's patterns(4 types) was compared and evaluated from the cross-sectioned overlap maps by $moir{\acute{e}}$ topography. The results were as follows: 1. According to the measurements of four patterns by using the one-dimensional measurement, the amount of ease in girth item for pattern A was the smallest. The ease of clothes was affected by the position of dart, the amount of dart, and the drafting method. 2. As the results of wearing evaluation by $moir{\acute{e}}$ topography method, pattern B had the largest space length for hip part, pattern A, C and D had the largest space length for bust part. Also, in the all measurement items, pattern A had the smallest amount of ease. The space length for bust and waist part of pattern B was smaller than pattern D, but, for abdomen and hip part of pattern B was larger than pattern D. The space length of pattern C was revealed intermediate for all measurement part. 3. The significant difference of space length of each pattern was shown in all parts except bust part(p<.05). The amount of space was affected by the amount of dart, the characteristics of the somatotype, and the drafting method.

• 소성∙가공
• /
• 제16권8호
• /
• pp.575-581
• /
• 2007

The high dimensional accuracy of the cold forged part could be acquired by the accurate dimensional modification for the die, which is, the dimensional changes from the die through forged part to final part after heat treatment were considered. The experimental and FEM analysis are performed to investigate the dimensional changes from the die to final part on cold forged part, comparing with the machined gear. The dimension of forged part is compared with the die dimension at each stage, such as, machined die, cold forged part, and heat-treated-part. The elastic characteristics and thermal influences on forging stage are analyzed numerically by the $DEFORM-3D^{TM}$. The analyzed residual stress of forged part is considered into the FE-analysis for heat treatment using the $DEFORM-HT^{TM}$. The effects of residual stress affected into the dimensional changes could be investigated by the FEA. Each residual stress of gears was measured practically by laser beam type measurement.

• 수산해양기술연구
• /
• 제56권4호
• /
• pp.322-339
• /
• 2020

Temporal and spatial fluctuations of surface water temperature in Yeosu Bay for the period from 2010 to 2011 were studied using the data from temperature monitoring buoys deployed at 32 stations in the south coast of Korea. Temperatures in the northern part of the bay are higher in summer and lower in winter than in the southern part of the bay. The lowest and highest temperature of the annual mean are found at the eastern coast of POSCO and at the west of Dae Island, respectively. Cold water masses appear at estuarine area when the discharge of Sumjin river is affluent. Amplitude of temperature fluctuation whose period is less than semi-diurnal is largest at Hadong coast and around Dae Island. Spectral analysis of surface water temperature shows a significant peak at a periodic fluctuation of 0.5 to 24 days and about 15-day period of predominant fluctuation is most frequent in Yeosu Bay. From the cross-correlation analysis of temperature fluctuations, Yeosu Bay can be classified into six areas; the south area affected by South Sea of Korea, the mixed area in the center of the bay, the estuarine area affected by river discharge at the north of the bay, the hot waste water area near Hadong coast, the area around Dae Island and the area near Noryang Channel affected by the water in Jinju Bay, respectively.

• 한국정밀공학회지
• /
• 제19권5호
• /
• pp.43-50
• /
• 2002

Friction welding has many merits such as energy efficiency, simple processing, etc butt difficult to obtain good weld at the welded interface and heat affected zone. To date, the continuum mechanics and fracture mechanics are utilized to analyse stresses at the interface and propagation of cracks. In this study. STS304 and SM15C are selected because they can be differentiated distinctively from metallic point of view and crack can be observed easily. It is ovserved during friction welding that STS304, rotary part is hatter than SH15C, fixed part. The last fracture occurs around the center because the surface of fatigue fracture has smooth regions, due to the separation phenomenon in plastic flows layers and striation dimple pattern.

• Tribology and Lubricants
• /
• 제14권4호
• /
• pp.108-113
• /
• 1998

In order to investigate the characteristics of top ring groove deposit formation in diesel engine, engine test and simulation test were performed. From component analysis of used oils sampled from actual running engines, soot content in engine oil was selected as a main parameter for evaluating oil degradation. Deposit formation is highly related to soot content in lubricating oils. And high soot content oil accelerates deposit formation even in low temperature region below 26$0^{\circ}C$. In low temperature region below 26$0^{\circ}C$, deposit formation rate is mainly affected by top ring groove temperature. However, in high temperature region above 26$0^{\circ}C$, deposit formation rate is affected by soot content as well as top ring groove temperature. Therefore, soot content as well as top ring groove temperature should be kept a certain level in order to prevent troubles due to carbon deposit formation.

• 대한기계학회논문집
• /
• 제12권4호
• /
• pp.738-746
• /
• 1988

본 연구에서는 이상계 스테인리스강에서 문제시되고 있는 용접부에 대하여 용 접시 입열에 의한 영향이 큰 용착금속부(fusion line), 용접열영향부(HAZ)의 기계적, 금속조직적 변화와 관련하여 크랙전파특성을 규명하고 주사현미경(SEM)을 이용한 피로 파면을 고찰하였다.

• Journal of Welding and Joining
• /
• 제11권1호
• /
• pp.2-8
• /
• 1993

A literature review was conducted to gather informations available on the welding metallurgy of aluminum alloys, emphasized on characteristics in the heat affected zone(HAZ). Nominal metallurgical reactions that occur in aluminum alloys provide a basis for understanding aluminum welding metallurgy. However, welding reactions differ to some extent because of the relatively short times involved, and the non-isothermal heating excursed. For non-heat treatable alloys, welding primarily affects these alloys by annealing (recrystallization and growth) and to a less extent, changes in low temperature precipitates. In the case of heat treatable alloys, the resulting HAZ properties depend upon alloy composition, starting temper, heat input and post weld heat treatments.

• 국제강구조저널
• /
• 제18권4호
• /
• pp.1431-1439
• /
• 2018

For floating buildings may fl oat on the water for a long time, they are constantly affected by various environmental loads such as wind and wave loads. In this study to find the wave effect on the floating building, five models are designed using steel moment resisting frame. It is assumed that the lower part of the floating building is a reinforced concrete pontoon, while the upper part is a three-story steel frame. To analyze floating buildings affected by wind and wave loads, hydro-dynamic and substructure analysis are performed. As input loads, this study set limits that the mean wind velocity is 35 m/s and the significant wave height is 0.5 m for the residential building. From the hydrodynamic analysis, the time-history acceleration of building is obtained and transformed into a base ground input for a substructure analysis of the superstructure of the building. Finally the mean of the maximum from 30 dynamic analysis of the floating buildings are used to be compared with the results of the same model on the ground. It was shown that the dynamic results with wind and wave loads are not always lesser than the static results which are calculated with static equivalent wind load for a building that is located on the ground.