• 제목/요약/키워드: carbon-arc-lamp

검색결과 10건 처리시간 0.024초

탄소방전등과 저강도 레이저 조사가 화상 쥐의 Cytokine 변화에 미치는 영향 (An Effect of Carbon Arc Lamp and Low Level Laser Therapy on the Changes of Burned Mice's Cytokine)

  • 박돈목;박래준
    • The Journal of Korean Physical Therapy
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    • 제18권6호
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    • pp.13-21
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    • 2006
  • Purpose: To provide the basic method for physical therapy to contribute to early stage treatment of a burned patients. We investigated whether or not carbon arc lamp treatment and low level laser one among various laser treatments have the effect of reducing Cytokine, and to elucidate the effect of carbon arc lamp treatment and laser one. Methods: The 6-week old BALB/c types of 92 mice were used for the experimental test, and they were burned with $100^{\circ}C$ water, they were divided into 4 groups in accordance with the method of treatment respectively. And the blood and the tissue from the subject of each group were extracted and analyzed each time after they were cured for 3, 6, 9 days. For the analysis of the results, SPSS statistical program was used in this study. Results: The quantity of $TNF-{\alpha}$ and $IL-1{\beta}$ within the blood of a burned mouse increased more than that of a normal mouse(p<0.01). In only a burned mouse, carbon arc lamp treatment gave the effect on the decrease of $TNF-{\alpha}$ thickness the 6th day to the 9th day(p<0.01). $IL-1{\beta}$ quantity was more decreased than that of control group around the 6th day. In comparison with only a control group, low level laser treatment has more significant effect in decreasing the quantity of $TNF-{\alpha}$ a and $IL-1{\beta}$ than the two different methods(p<0.01). In case that the two treatment methods, carbon arc lamp treatment and low level laser, were executed together, there was the effect of decreasing $TNF-{\alpha}$ until the 6th day(p<0.01). Conclusion: Both low level laser treatment and carbon arc lamp one would be able to have an effect on the inflammation inhibition of burned patients and tissues reproduction. However, it must be also considered for the two treatments to be done at the same time.

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군용 섬유제품의 일광견뢰도 시험방법 개선에 대한 연구 (A Study on the Improved Lightfastness Test Method for Military Textile Products)

  • 홍성돈;김병순;전영민;이정순
    • 한국염색가공학회지
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    • 제27권4호
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    • pp.288-300
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    • 2015
  • This study was executed to substitute Carbon-arc method, which is a method currently used for testing light-fastness of military textile products, with Xenon arc method. Specimens used in the study were classified according to the fabric material and color of military textile products and were composed of 11 items of 42 kinds with different colors. Light-fatness test was done by comparing the result of Carbon-arc(KS K 0700) and Xenon arc(KS K ISO 105-B02) method. In Xenon arc method, blue wool reference materials of 1~8 was used, and exposure condition preferred in American continent and light exposure method 3 were applied. After testing with both methods, grade of light-fastness, color difference, reflectance and color were examined. Even though there was a slight difference among 42 specimens used in the test, results exceeded the quality standard both in Carbon-arc-lamp and Xenon arc-lamp. Therefore, it was confirmed that applying KS K ISO 105-B02 together in the KS K 0700-regulated Ministry of National Defense standard and purchase order would also fit.

스테로이드제제 부작용을 동반한 만성 족부 한포진 치험 1례 (A Case Study of Chronic Plantar Pompholyx Including Steroids Side Effects)

  • 강다혜;김정현;임해원;김지영;권강
    • 한방안이비인후피부과학회지
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    • 제24권1호
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    • pp.181-191
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    • 2011
  • Backgrounds : Pompholyx is a distinctive reaction pattern presenting as symmetric vesicular hand and foot dermatitis. Other than acute symptoms like itching and vesicles, chronic changes with scaling, fissure and pain may follow. As patients are treated by steroid for a long period, it tends to present side effects after quitting steroid treatment. Objectives : This study was carried out to investigate the effect of carbon arc lamp therapy and oriental medical therapy that venesection therapy, ointments and herbal medicine on chronic plantar pompholyx including steroids side effects. Methods : We treated one case of chronic plantar pompholyx which had continued about 10 years, including steroids side effects with venesection therapy, carbon arc lamp therapy, ointments and herbal medicine. To evaluate the results of this treatment, we categorized symptoms into six items which are vesicles, itching, fissures, pain, erosions and scales. Results : Except mild itching, vesicles and scales in a small area, all the symptoms were subsided. Conclusions : It is considered that various kinds of oriental medical therapy including carbon arc lamp therapy could replace steroid therapy which has many side effects.

가교폴리에틸렌의 촉진 내후성 (Accelerated Weathering Behavior of XLPE)

  • 이철호;김상욱
    • 공업화학
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    • 제5권4호
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    • pp.722-730
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    • 1994
  • 전기절연체로 사용되는 가교폴리에틸렌(XLPE)의 내후성에 미치는 산화방지제(Antioxidant)와 카본블랙의 효과를 살펴 보았다. 산화방지제와 카본블랙을 조합하여 16가지의 시료를 제작하고 xenon-arc lamp type의 Weather-Ometer로 500, 1000, 1500, 2000 시간 촉진열화시켰을 때 촉진열화 각 시간대별로 열화거동을 관찰하였다. 인장강도, 신장율, 절연파괴전압, tan ${\delta}$로 XLPE의 내후성을 평가한 결과, 산화방지제보다는 카본블랙이 더 효과적이었고 두 첨가제를 조합해서 사용할 때 내후성이 우수한 synergistic effect를 나타냈다.

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Arc-Discharge로 합성한 SWNT의 전계방출 특성 (Field emission properties of SWNTs (single-walled nanotubes) synthesized by arc-discharge method)

  • 이현재;이양두;문승일;황호수;한종훈;유재은;남산;주병권
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 춘계학술대회 논문집 디스플레이 광소자분야
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    • pp.185-188
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    • 2004
  • A diode structure of field emission lamps based upon carbon-nanotube is studied. The single-walled carbon nanotubes(SWNTs) were produced by arc discharge method. We made the 1-inch diode type flat lamp using CNTs. We applied anode voltage gradually to refine the field emission behavior of emitter in dynamic vacuum system to study the emission current. the brightness and efficiency, etc. The field emission properties was estimated by varying gaps between the cathode and anode, contents of the glass frit. The good luminous efficiency is showed in the gap $900{\mu}m$, $1200{\mu}m$ and contents of the proper glass frit. For the upper conditions, the luminous efficiencies were respectively 23.30, 11.12 1m/W.

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Transparent carbon nanotube field emission devices for field emission display and lamp

  • Cho, You-Suk;Lee, Se-Min;Park, Hee-Yong;Lee, Sun-Hee;An, Myung-Chan;Jeong, Se-Young;Kim, Do-Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1233-1234
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    • 2006
  • A simple new method to fabricate transparent carbon nanotube field emission devices was developed. The highly graphitized single wall carbon nanotubes were attached on Sn/ITO glass by arc discharge method. Post heat treatments below the deformation temperature of soda-lime glass guaranteed a good mechanical adhesion and electrical contact of the nanotubes. The Sn layer was oxidized below $400^{\circ}C$ and became transparent. As increasing the oxidation temperatures, the emission properties became stable and life time of emitter has been increased.

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철도차량 차체용 탄소섬유/에폭시 복합재의 환경노화 특성 평가 (Environmental aging characteristics of carbon/epoxy composite for train carbody)

  • 오진오;윤성호;김정석;한성호
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2007년도 추계학술대회 논문집
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    • pp.824-829
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    • 2007
  • Mechanical and thermal analysis properties of carbon fiber/epoxy composite for train carbody were evaluated by varying with environmental factors such as ultraviolet, temperature, and moisture. Accelerated environmental aging tester was utilized for this study. Testing temperature was set to $80^{\circ}C$ and ultraviolet was obtained through xenon-arc lamp. To consider moisture, water sprayed on specimen for 18 minutes every 2 hour. All the specimens were made of CF1263/Epoxy composite. Mechanical properties such as tensile, bending, and shear properties were evaluated through a material testing system. Also, thermal analysis properties such as storage shear modulus, loss shear modulus, and tan ${\delta}$ were measured through dynamic mechanical analyzer. Finally surfaces of the composite exposed to environmental factors were examined using a scanning electron microscope. From experimental results, those properties of CF1263/Epoxy composite were shown to be slightly decreased due to environmental factors.

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Carbon nanotube field emission display

  • Chil, Won-Bong;Kim, Jong-Min
    • E2M - 전기 전자와 첨단 소재
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    • 제12권7호
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    • pp.7-11
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    • 1999
  • Fully sealed field emission display in size of 4.5 inch has been fabricated using single-wall carbon nanotubes-organic vehicle com-posite. The fabricated display were fully scalable at low temperature below 415$^{\circ}C$ and CNTs were vertically aligned using paste squeeze and surface rubbing techniques. The turn-on fields of 1V/${\mu}{\textrm}{m}$ and field emis-sion current of 1.5mA at 3V/${\mu}{\textrm}{m}$ (J=90${\mu}{\textrm}{m}$/$\textrm{cm}^2$)were observed. Brightness of 1800cd/$m^2$ at 3.7V/${\mu}{\textrm}{m}$ was observed on the entire area of 4.5-inch panel from the green phosphor-ITO glass. The fluctuation of the current was found to be about 7% over a 4.5-inch cath-ode area. This reliable result enables us to produce large area full-color flat panel dis-play in the near future. Carbon nanotubes (CNTs) have attracted much attention because of their unique elec-trical properties and their potential applica-tions [1, 2]. Large aspect ratio of CNTs together with high chemical stability. ther-mal conductivity, and high mechanical strength are advantageous for applications to the field emitter [3]. Several results have been reported on the field emissions from multi-walled nanotubes (MWNTs) and single-walled nanotubes (SWNTs) grown from arc discharge [4, 5]. De Heer et al. have reported the field emission from nan-otubes aligned by the suspension-filtering method. This approach is too difficult to be fully adopted in integration process. Recently, there have been efforts to make applications to field emission devices using nanotubes. Saito et al. demonstrated a car-bon nanotube-based lamp, which was oper-ated at high voltage (10KV) [8]. Aproto-type diode structure was tested by the size of 100mm $\times$ 10mm in vacuum chamber [9]. the difficulties arise from the arrangement of vertically aligned nanotubes after the growth. Recently vertically aligned carbon nanotubes have been synthesized using plasma-enhanced chemical vapor deposition(CVD) [6, 7]. Yet, control of a large area synthesis is still not easily accessible with such approaches. Here we report integra-tion processes of fully sealed 4.5-inch CNT-field emission displays (FEDs). Low turn-on voltage with high brightness, and stabili-ty clearly demonstrate the potential applica-bility of carbon nanotubes to full color dis-plays in near future. For flat panel display in a large area, car-bon nanotubes-based field emitters were fabricated by using nanotubes-organic vehi-cles. The purified SWNTs, which were syn-thesized by dc arc discharge, were dispersed in iso propyl alcohol, and then mixed with on organic binder. The paste of well-dis-persed carbon nanotubes was squeezed onto the metal-patterned sodalime glass throuhg the metal mesh of 20${\mu}{\textrm}{m}$ in size and subse-quently heat-treated in order to remove the organic binder. The insulating spacers in thickness of 200${\mu}{\textrm}{m}$ are inserted between the lower and upper glasses. The Y\ulcornerO\ulcornerS:Eu, ZnS:Cu, Al, and ZnS:Ag, Cl, phosphors are electrically deposited on the upper glass for red, green, and blue colors, respectively. The typical sizes of each phosphor are 2~3 micron. The assembled structure was sealed in an atmosphere of highly purified Ar gas by means of a glass frit. The display plate was evacuated down to the pressure level of 1$\times$10\ulcorner Torr. Three non-evaporable getters of Ti-Zr-V-Fe were activated during the final heat-exhausting procedure. Finally, the active area of 4.5-inch panel with fully sealed carbon nanotubes was pro-duced. Emission currents were character-ized by the DC-mode and pulse-modulating mode at the voltage up to 800 volts. The brightness of field emission was measured by the Luminance calorimeter (BM-7, Topcon).

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한포진에 대한 최근 한의학적 연구 동향 - 국내 학술지를 중심으로 - (An Overview of Korean Medicine Research for Pompholyx - Literature Review based on recently published studies in Korea -)

  • 정종민;오용택;김경한;이명선;송범용;김종욱;육태한
    • 대한예방한의학회지
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    • 제22권3호
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    • pp.61-72
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    • 2018
  • Objectives : This study was conducted to review the research trends in Korean Medicine of pompholyx based on publications in Korea. Methods : Literature published after 2000 were collected using OASIS, NDSL, KISS, and key words searched were "한포진" "발한이상" "pompholyx" "dyshidrotic eczema". Results : 10 case reports and 4 patient studies were selected for study. Conclusions : Korean medicine treatments included acupuncture, pharmacopuncture, venesection therapy, herbal medicine, ointments and carbon arc lamp therapy. The most commonly used diagnostic method for pompholyx was inspection along with pulse diagnosis, abdominal diagnosis, tongue diagnosis, culture test, and KOH smear screening. The most frequently used treatment evaluation method was Likert scale while VAS(Visual Analog Scale) and Visual&Subjective symptoms were each used in 4 studies. Among 29 patients in 14 papers who showed clinical manifestations of pompholyx, there were 15 male patients (52%), 14 female patients (48%), and the male to female ratio showed 1.07:1. Symptoms were improved using Korean Medicine treatments including acupuncture and herbal medicine. Concurrent treatment using special treatments such as pharmacopuncture, jiyang-go, bojungikgi-tang(ex), external applications showed higher treatment effects. Korean medical treatment of pompholyx was effective in all studies, but the lack of numbers of research on Korean medicine of pompholyx was witnessed compared to other diseases such as psoriasis. Also considering the number of patients suffering from pompholyx, further studies should be conducted.

자외선(紫外線) 공기(空氣) 청정기(淸淨機)의 냉장고(冷藏庫) 살균(殺菌) 탈취(脫臭) 효과(效果) (Sterilizing and Deodorizing Effect of UV-Ray Air Cleaner for Refrigerator)

  • 전재근;이영진;김경만;이홍원;장의영
    • 한국식품과학회지
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    • 제25권2호
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    • pp.174-177
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    • 1993
  • 소형 밀폐공간(48 liter)과 가정용냉장고(330, 450 liter)에서 살균 및 탈취효과를 가진 자외선공기청정기를 설계, 제작하였다. 자외선램프의 자외선강도는 $2.38\;mW/cm^2$이며 강도증폭을 위하여 내부에 반사판을 설치하였다. 자외선에 의한 오존발생량은 $25^{\circ}C$ 에서는 0.08 ppm, $3^{\circ}C$ 에서는 0.06 ppm이었다. 본 장치를 사용하여 부유균에 대한 살균율은 공간(48 liter)에서는 12시간 가동 후 78.9%, 가정용냉장고에서는 80%을 보였다. 동장치는 $25^{\circ}C$에서 전기 방전식 오존탈취기에 비하여 2.5배, $3^{\circ}C$에서 2배의 탈취력을 보였다. 김치 냄새의 주요성분인 methyl mercaptan에 대한 탈취력은 $3^{\circ}C$에서 3배 이상이었다.

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