http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고분자 물질 첨가에 따른 수직 하향 이상유동에서 대류 열전달 관한 실험적 연구
金載浩,金在根,車京玉 明知大學校 産業技術硏究所 2004 産業技術硏究所論文集 Vol.23 No.-
This study was conducted to figure out the convective hear transfer in vertical downward tow-phase flow with polymer additives. This experiment was studied in 26mm inner diameter, 800mm heating length and 1×10^(5)W/m^(2) heat flux. The polymer concentration ranged from 0 PPM to 500 PPM of vertical downward flow in cylindrical tube. Experimental results show that the convective heat transfer increased with increasing the superficial air and water velocity but decreased with increasing the polymer additives of vertical downward two-phase flow in cylindrical tube.
CAT용 스펙트럼 분석기 모듈에 적용한 인터페이스 설계및 구현에 관한 연구
전동근,강지훈,김재형 國立 昌原大學校 産業技術硏究所 1992 産技硏論文集 Vol.6 No.-
As factory automation is rapidly propelled, automatic manufacturing facility is developing widely. But the development of ATE(Automatic Test Equipment) is not reached than that of it. In this paper, we designed intermodule interface for measurment device for computer and CAT(Computer Aided Test) for automatic testing device of spectrum analyzer and implemented real time processing program for control of measurement device. OOP(Object Oriented programming) technique was used in control program to be interfaced with other measurement equipment easily. And we constructed of GUI(Graphical User Interface) method that can be used softwere for user.
李永俊,李根鎬,金熙東,李元宰,姜道烈 弘益大學校 1988 弘大論叢 Vol.20 No.2
In this paper, Thermally stimulated current(TSC) spectrum was mearsured as a function of formation temperature, formation time, formation voltage and heating rate in a biaxially oriented polypropylene film of thickness 40[μm], which is better than polyethylene in the enduring characteristic against heat and dielectric characteristic, the variation of the TSC was observed by ozone oxidation. This measurment has been carried out in the temperature range from-40[℃] to 140[℃]. As results of the measurment, A,B,C,D peaks was made at 0[℃], 40[℃], 80[℃], 120[℃], respectively. B peak was made at the near second glass transition temperature is estimated the dipole polarization by microbrown motion, C peak is estimated to the polarization of ionic space charge. And, In according to the increase of oxidation time by ozone, B peak increased slowly and C peak increased rapidly after it increased slowly during first oxidation time of 15[Hr]. By initial rising method, activation energies of B,C peaks were calculated to about 0.57, 0.84eV, respectively. The hopping distance and mobility of C peak for pure specimen and ozone oxidated specimen 54A, 71A and 1.099×10??cm²/υ·s, 8. 55×10??cm²/υ·s, respectively.
비부착 PS콘크리트 구조의 시간의존적 특성을 고려한 비선형 해석에 관한 연구
최정호;김운학;박재근 한경대학교 2008 論文集 Vol.40 No.-
This paper presents a comparative study on nonlinear analysis of the unbonded PSC structure considering time-dependent effect. For developing a finite element analysis program, an unbonded PS tendon model which can represent straight or curved unbonded tendon is proposed. The F.E. analysis program, named RCAHEST(Reinforced Concrete Analysis in Higher Evaluation System Technology), is used. Material nonlinearities of cracked concrete are taken into account by tension, compression, and shear models. And nonlinear material models for reinforcing and prestressing steels are included. These models work with models for time-dependent effect such as aging, creep and shrinkage of concrete and stress relaxation of prestressing tendon. The developed finite element analysis program is verified by comparison with reliable experimental results.
향기요법이 통증을 주소증으로 입원한 환자의 수면장애에 미치는 영향
박수곤 ( Soo Gon Park ),양미성 ( Mi Sung Yang ),김오영 ( Oh Young Kim ),조희근 ( Hee Guen Jo ),최진봉 ( Jin Bong Choi ),김선종 ( Sun Jong Kim ),설재욱 ( Jae Uk Sul ) 한방재활의학과학회 2010 한방재활의학과학회지 Vol.20 No.4
Objectives :The purpose of this study is to investigate the effects of aroma therapy on sleep disorder patients with musculoskeletal pain. Methods :The 44 patients were divided into 2 groups: Experimental group(Exp. group) was treated with aroma therapy and control group was treated except aroma therapy. To evaluate the efficiency of aroma therapy, the Korean sleep scale A(Jin-Joo Oh, Mi-Soon Song, Sin-Mi Kim. 1998) and visual analogue scale(VAS) were applied before treatment and after 5 days treatment. Results :1. The Experimental group has improved statistical significance in sleep disorder score as compare to the control group. 2. The improvement of sleep disorder score of Exp.group has difference according to impression. 3. The improvement of sleep disorder has an effect on pain decrease. Conclusions :Aroma therapy has effects of improvement on sleep disorder with musculoskeletal pain.
Measurement of Therapeutic Proton Beam Using a Fiber-Optic Cerenkov Radiation Sensor
Kim, Seon Guen,Jang, Kyoung Won,Shin, Sang Hun,Hong, Seung Han,Sim, Hyeok In,Jeon, Hye Su,Jang, Jae Seok,Kim, Jae Seok,Kwon, Gu Won,Yoo, Wook Jae,Kim, Me Young,Shin, Dong Ho,Cho, Seung Hyun,Lee, Bong Trans Tech Publications, Ltd. 2014 Advanced materials research Vol.1033 No.-
<P>Tumor therapy using the high-energy radiation has evolved over the decades as typical non-invasive treatment method due to its advantage compared with surgery. But, the radiotherapy can damage or destroy normal cells as well as destroying tumor cells and cause side effects of treatment. Even though most side effects are temporary, these effects can be extremely fatal for patient. Therefore, the exact measurement of the exposure dose of patient during radiation therapy is very important for patient safety. In the case of the conventional fiber-optic radiation sensor that consists of a scintillator for high-energy radiation dosimetry, additional correction is necessary due to the quenching effects of the scintillator. In this study, we measured the exposure dose of the high-energy proton beam without the scintillator by using the Cerenkov radiation that generated inside the plastic optical fiber. As a result of this study, we confirmed a Bragg peak of the proton beam without a scintillator. Also it was in good agreement with the result of the ionization chamber.</P>
( Jae Hyung Park ),( Joong Goo Kwon ),( Sun Joo Kim ),( Dae Kyu Song ),( Seok Guen Lee ),( Eun Soo Kim ),( Kwang Bum Cho ),( Byung Ik Jang ),( Dae Hwan Kim ),( Jeong Im Sin ),( Tae Wan Kim ),( In Hwan 대한소화기기능성질환·운동학회 2015 Journal of Neurogastroenterology and Motility (JNM Vol.21 No.1
Background/Aims Inflammatory bowel disease is commonly accompanied by colonic dysmotility and causes changes in intestinal smooth muscle contractility. In this study, colonic smooth muscle contractility in a chronic inflammatory condition was investigated using smooth muscle tissues prepared from interleukin-10 knockout (IL-10./.) mice. Methods Prepared smooth muscle sections were placed in an organ bath system. Cholinergic and nitrergic neuronal responses were observed using carbachol and electrical field stimulation with L-NG-nitroarginine methyl ester (L-NAME). The expression of interstitial cells of Cajal (ICC) networks, muscarinic receptors, neuronal nitric oxide synthase (nNOS) and inducible nitric oxide synthase (iNOS) was observed via immunofluorescent staining. Results The spontaneous contractility and expression of ICC networks in the proximal and distal colon was significantly decreased in IL-10./. mice compared to IL-10+/+ mice. The contractility in response to carbachol was significantly decreased in the proximal colon of IL-10./. mice compared to IL-10+/+ mice, but no significant difference was found in the distal colon. In addition, the expression of muscarinic receptor type 2 was reduced in the proximal colon of IL-10./. mice. The nictric oxide-mediated relaxation after electrical field stimulation was significantly decreased in the proximal and distal colon of IL-10./. mice. In inflamed colon, the expression of nNOS decreased, whereas the expression of iNOS increased.Conclusions These results suggest that damage to the ICC network and NOS system in the proximal and distal colon, as well as damage to the smooth muscle cholinergic receptor in the proximal colon may play an important role in the dysmotility of the inflamed colon.
Effect of Rare Earth Element on Microstructure and Mechanical Properties of Mg-Sn-Ca Alloys
Kim, Dae Guen,Lee, Jae Seol,Park, Seul Ki,Kim, Young Mo,Son, Hyeon Taek,Huh, Moo Young Trans Tech Publications, Ltd. 2010 Materials science forum Vol.638 No.-
<P>In the present work, the effect of Nd addition on microstructure change, precipitation behaviours and mechanical properties, of Mg-5Sn-3Ca based alloys were investigated. With increasing of Nd addition, size of the Mg-Sn-Ca ternary phases with fine needle shape (A-type) was decreased and volume fraction of these phase were increased. As Nd was increase from 0.5, 1.0 and 3.0 wt.%, size and volume fraction of Mg2Sn with coarse needle shape phase (B-type) was decreased. However, in 3.0 wt.% Nd containing alloy, size of these Mg2Sn phase was smaller than that of 0.5 and 1.0 wt% Nd addition alloy and volume fraction of these phase was decreased.</P>