• 제목/요약/키워드: Dry Process

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Effect of Dry Granulation Process on Flowability of Erdosteine

  • Wang, Hun-Sik;Kwon, Min-Chang;Shim, Ji-Yeon;Park, Jun-Sang
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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    • pp.230.2-230.2
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    • 2003
  • Erdosteine, an expectorant, has been known to show a very poor flowability. Furthermore, high dosing amount (300mg/cap) and bulk density make it more difficult to fill in a capsule less than No. 0 size as bulk state. We have studied the possibility of dry granulation process in purpose of getting a better flowability and manufacturing efficiency. A roller compactor was introduced for this purpose and the applicability of laboratory result into commercial scale instrument was also experimented.Roller compacting process was very favorable to obtain the granules with good flowability and improved density profiles. (omitted)

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경량 모르터용 건식공정 바텀애시의 입형 개선 효과와 최적 입도 (Shape Improvement and Optimum Gradation of Dry Processed Bottom Ash for Lightweight Mortar)

  • 최홍범;김진만;선정수;한동엽
    • 한국건설순환자원학회논문집
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    • 제3권1호
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    • pp.7-14
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    • 2015
  • 본 연구의 목적은 건식공정을 통해 생산된 바텀애시를 이용하여 친환경적이고 저렴한 경량콘크리트의 잔골재로 활용하는 것이다. 기존의 습식공정과 비교하여 건식공정은 물에 닿지 않고, 염분이 없으며, 다소 느린 공정으로 완전연소를 통해 미연소탄소성분이 거의 없다. 이러한 건식공정 바텀애시를 경량 모르터용 잔골재로서 타당성을 평가하기 위해 골재의 입형 개선 효과와 최적 입도분포의 두가지 단계로 나누어 실험을 실시하였다. 첫 번째 실험에서 추가적인 마쇄과정을 통해 얻어진 양호한 입형의 바텀애시는 유동성과 강도 측면에서 양호한 결과를 나타내었으며 다소간의 단위용적질량 증가를 보였다. 두 번째 실험에서 다양한 입도를 구성하여 실험을 실시하였고, 그 결과 표준입도에 맞추어진 입도에서 굳지 않은 상태 및 경화상태에서 양호한 성능을 나타내었다. 본 연구의 결과를 통해 차후 건식 공정을 통한 바텀애시의 활용방법이 확대되고, 바텀애시를 경량 잔골재로 활용함으로서 부가가치 상승에 기여할 것으로 예상된다.

태음인(太陰人) 조열증(燥熱證)의 형성과정(形成過程)에 대한 연구(硏究) (The Study on the Formative Process of Taeumin's Dry-febrile Symptom)

  • 김상혁;김윤희;황민우;이준희;송일병;고병희
    • 사상체질의학회지
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    • 제20권1호
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    • pp.1-14
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    • 2008
  • 1. Objectives This paper was written in order to understand formative process of Taeumin's Dry-febrile Symptom. 2. Methods We analysis Taeumin's Dry-febrile Symptom through pathology and prescription in ${\ulcorner}$Dongyisusebowonchobongyun${\lrcorner}$, ${\ulcorner}$Dongyisusebowongabo-bon${\lrcorner}$, ${\ulcorner}$Dongyisusebowonsinchukbon${\lrcorner}$. And we also analysis before study on pathology of Taeumin. 3. Results and Conclusions SCM was controled by Good-Qi. There was explained the strong and weak of Good-Qi to the number of real life. Slightness and Severeness of disease are dependent on the Health Energy of small viscera. So the interior febrile disease of Taeumin is divided to Liver-febrile symptom and Dry-febrile symptom. Because Liver-febrile symptom is reasonable symptom but Dry-febrile symptom is contrary symptom.

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Dry Etch Process Development for TFT-LCD Fabrication Using an Atmospheric Dielectric Barrier Discharge

  • Choi, Shin-Il;Kim, Sang-Gab;Choi, Seung-Ha;Kim, Shi-Yul;Kim, Sang-Soo;Lee, Seung-Hun;Kwon, Ho-Cheol;Kim, Gon-Ho
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.1272-1275
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    • 2008
  • We present the development of dry etch process for the liquid crystal display (LCD) fabrication using a dielectric barrier discharge (DBD) system at atmospheric pressure. In this experimental work, the dry etch characteristics and the electrical properties of thin film transistor are evaluated by using the scanning electron microscopy and electric probe, and TFT-LCD panel ($300\;mm\;{\times}\;400\;mm$) is manufactured with the application of the amorphous silicon etch step in the 4 mask and 5 mask processes.

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탈피복 기계 장치와 건식 분말화 장치 설계 (Design of the Dry Powder Device and Slitting Machine Device)

  • 정재후;윤지섭;김영환;이종열;홍동희
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 1997년도 추계학술대회 논문집
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    • pp.630-633
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    • 1997
  • Spent fuel decladding device and dry voloxidizer is to separate the spent pellet from spent fuel rod cut by 250mm and to convert the spent pellet into powder form for reuse and/or disposal of the spent fuel. There are two methods in decladding and voloxidation of spent fuel, that is, wet method with chemical material and dry method with mechanical device. In this study, to examine the fuel rod decladding process and the pellet voloxidation process, the devices for the spent fuel decladding and the pellet voloxidation with dry method are developed. The decladding machine is designed to separate pellets from fuel rod by slitting device. And, the voloxidizer is designed to convert the spent pellet which is ceramic form into powder form by oxidation using the multi step mesh, vibrator, and air in the high temperature environment. The result of this study, such as operation condition et., will be utilized in the design of the machine for demonstration.

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3성분계 무기결합재 패널크기에 따른 건조수축 특성 (Dry Shrinkage Characteristic according to the Ternary System Inorganic Binder Panel Size)

  • 이진우;이상수
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2014년도 추계 학술논문 발표대회
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    • pp.144-145
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    • 2014
  • In the cement,that is the main materials of the panel, as to the cofired process, more than 1,300 enormous energies is consumed, in addition the greenhouse gas generated in the process of producing the cement occupies 6.3% of the country whole emission quantity. And the carbon dioxide of about 0.8 ton is the cement ejected in 1 production. Accordingly, the panel utilizing the industrial byproduct is developed. Accordingly, this research is the experiment which makes the individual size into the environment-friendly inorganic binder panel and by using the blast furnace slag, which is the industrial byproduct with the cement substitute material red mud, silica fume, and etc. looks at the dry shrinkage. The length variation in which the panel which is 450 with the dry shrinkage result of measurement, thickness 12mm, and size 450mm is the smallest was shown.

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건습식 혼합공정을 이용한 유연소재 상 전자파 차폐용 다층막 코팅 (Multilayer Coatings on Flexible substrate for Electromagnetic Shielding by Using Dry/Wet Hybrid Processes)

  • 이훈성;이명훈
    • 한국표면공학회지
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    • 제50권5호
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    • pp.373-379
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    • 2017
  • Dry processes like evaporation and sputtering in vacuum chamber are difficult to make a uniform, large area and high quality film on thin PET substrate because of PET degradation and bad adhesion. On the other hand, wet processes like electro or electroless plating have complex processes and require high environmental cost. In this study, we successfully prepared $2{\mu}m$ Zn/Cu/Ni multilayers coated on $12{\mu}m$ polyethylene terephthalate (PET) substrate by using dry-wet mixing processes. Their surface electric resistances were evaluated around $0.2{\Omega}$ by using 4 probe measurements. Furthermore, their corrosion resistance also evaluated by natural potential test and compared with other wet, dry and mixing process samples.

INDUSTRIAL STATUS OF DRY PLATING AS AN ALTERNATIVE TO WET PLATING PROCESS IN KOREAN SURFACE FINISHING INDUSTRY

  • Kwon, Sik-Chol;Baek, Woon-Sung;Lee, Gun-Hwan;Rha, Jong-Joo
    • 한국표면공학회지
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    • 제32권3호
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    • pp.253-256
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    • 1999
  • Wet plating has been initiated and developed as a major surface finishing technology as of the long customized and highly productive process until now. As the external compression by virtue of the environmental preservation becomes stricter, there has been new move to adapt dry plating line instead of conventional wet plating one in domestic surface finishing industry. Dry plating, so-called, plasma surface technology has been developed in semiconducting industry and becomes a key technology to be useful as an alternative to wet plating in surface finishing industry. The historical progress of domestic surface finishing industry was outlined with the background on the adaptation of three dry plating processes-plasma spraying, plasma nitriding and ion plating. The present status of domestic industrial activity was covered on major alternative to wet plating.

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순도를 달리한 알루미나 세라믹스의 마멸과정 및 이의 기구에 관한 연구 (A Study on The Wear Process and Wear Mechanism of the Alumina Ceramics with Different Alumina Purity)

  • 전태옥;진동규
    • 대한기계학회논문집
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    • 제18권12호
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    • pp.3404-3412
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    • 1994
  • The present study was undertaken to investigate the dry wear process and wear mechanism of the alumina ceramics in the purity variation which are used for the mechanical seal, roll, liner and dies. The wear test was carried out under different experimental condition using the wear testing device and in which the annular surface rubbed on dry sliding condition various sliding speed, contact pressure and sliding distance. In case of alumina purity 95%, there was speed range which wear loss increased rapidly owing to enlargement of heat impact force and temperature rise of wear surface. According as the alumina purity increased, wear loss decreased but alumina purity 85% with much void and defect had the most wear loss than any other alumina purity. The friction coefficient of sliding initial stage of wear curves has a large value but according to increase of sliding distance, it decreased owing to drop of the shear strength of wear surfaces.

새로운 ICP 장치를 이용한 고온 초전도체의 Dry Etching과 기존의 Wet Etching 기술과의 비교 (Comparison of the Existing Wet Etching and the Dry Etching with the ICP Process Method)

  • 강형곤;임성훈;임연호;한윤봉;황종선;한병성
    • 한국전기전자재료학회논문지
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    • 제14권2호
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    • pp.158-162
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    • 2001
  • In this report, a new process for patterning of YBaCuO thin films, ICP(inductively coupled plasma) method, is described by comparing with existing wet etching method. Two 100㎛ wide and 2mm long YBaCuO striplines on LaAlO$_3$ substrates have been fabricated using two patterning techniques. And the properties were compared with the critical temperature and the SEM photography. Then, the critical temperatures of two samples were about 88 K, but the cross section of sample using ICP method was shaper than that using the wet etching method. ICP method can be used as a good etching technique process for patterning of YBaCuO superconductor.

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