http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
강전웅(Jeon Woong Kang),고태욱(Tae Wook Ko),김다솔(Da Sol Kim),김태영(Tae Young Kim),정다운(Da Woon Jung),최윤희(Yoon Hee Choi),송기영(Ki Young Song) 대한기계학회 2019 대한기계학회 논문집. Transactions of the KSME. C, 산업기술과 혁신 Vol.7 No.3
본 연구는 분말 형태의 재료를 자동으로 계량하고 이에 대한 사용 데이터를 관리할 수 있는 기계와 IoT 복합 기술에 대하여 다루고 있다. 기존에 수작업으로 계량하던 방법을 자동으로 할 수 있는 계량 장치를 만들었으며 이를 제어할 수 있는 소프트웨어 또한 구성하였다. 이 포괄적 작동 시스템은 외부의 데이터베이스 서버와 연동이 되어 있어 요리에 적용 시, 필요한 각종 양념들을 정량적으로 토출되게 하고 그 영양 성분이 기록되어 사용자의 건강 관리에도 적용할 수 있다. 이 연구의 결과는 요리뿐만 아니라 분말 형태나 액상을 대상으로 배합하는 제약 분야에도 활용할 수 있어 다양한 건강 관련 산업에 적용될 수 있다. This paper deals with the complex system of the auto-measuring machine and IoT technology. The system could measure powder and care with the components of the used powder. This study developed the retrofit device that could automatically improve the existing manual method. Moreover, the software and the database platform were configured to control the mechanical system. This comprehensive operation system was linked with an external database server, so that various kinds of seasonings could be quantitatively discharged when applied to cooking, and the nutrients could be recorded and applied to the user"s health care. The results of this study can be applied not only to cooking but also to the pharmaceutical field for formulating powder or liquid, which can be applied to various health-related industries.
시간 분해 직렬 펨토초 결정학을 위한 3차원 프린팅 기반의 초고속 믹싱 및 인젝팅 시스템
지인서 ( Inseo Ji ),강전웅 ( Jeon-woong Kang ),김태영 ( Taeyung Kim ),강민서 ( Min Seo Kang ),권순범 ( Sun Beom Kwon ),홍지우 ( Jiwoo Hong ) 한국화학공학회 2022 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.60 No.2
Time-resolved serial femtosecond crystallography (TR-SFX) is a powerful technique for determining temporal variations in the structural properties of biomacromolecules on ultra-short time scales without causing structure damage by employing femtosecond X-ray laser pulses generated by an X-ray free electron laser (XFEL). The mixing rate of reactants and biomolecule samples, as well as the hit rate between crystal samples and x-ray pulses, are critical factors determining TR-SFX performance, such as accurate image acquisition and efficient sample consumption. We here develop two distinct sample delivery systems that enable ultra-fast mixing and on-demand droplet injecting via pneumatic application with a square pulse signal. The first strategy relies on inertial mixing, which is caused by the high-speed collision and subsequent coalescence of droplets ejected through a double nozzle, while the second relies on on-demand pneumatic jetting embedded with a 3D-printed micromixer. First, the colliding behaviors of the droplets ejected through the double nozzle, as well as the inertial mixing within the coalesced droplets, are investigated experimentally and numerically. The mixing performance of the pneumatic jetting system with an integrated micromixer is then evaluated by using similar approaches. The sample delivery system devised in this work is very valuable for three-dimensional biomolecular structure analysis, which is critical for elucidating the mechanisms by which certain proteins cause disease, as well as searching for antibody drugs and new drug candidates.
코로나-19 보호용 페이스 마스크에서의 액적 고속 충돌 거동
최재원 ( Jaewon Choi ),이동호 ( Dongho Lee ),어지수 ( Jisu Eo ),이동근 ( Dong-geun Lee ),강전웅 ( Jeon-woong Kang ),지인서 ( Inseo Ji ),김태영 ( Taeyung Kim ),홍지우 ( Jiwoo Hong ) 한국화학공학회 2022 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.60 No.2
Facial masks have become indispensable in daily life to prevent infection and spread through respiratory droplets in the era of the corona pandemic. To understand how effective two different types of masks (i.e., KF-94 mask and dental mask) are in blocking respiratory droplets, i) we preferentially analyze wettability characteristics (e.g., contact angle and contact angle hysteresis) of filters consisting of each mask, and ii) subsequently observe the dynamic behaviors of microdroplets impacting at high velocities on the filter surfaces. Different wetting properties (i.e., hydrophobicity and hydrophilicity) are found to exhibit depending on the constituent materials and pore sizes of each filter. In addition, the pneumatic conditions for stably and uniformly dispensing microdroplets with a certain volume and impacting behaviors associated with the impacting velocity and filter type change are systematically explored. Three distinctive dynamics (i.e., no penetration, capture, and penetration) after droplet impacting are observed depending on the type of filter constituting the masks and droplet impact velocity. The present experimental results not only provide very useful information in designing of face masks for prevention of transmission of infectious respiratory diseases, but also are helpful for academic researches on droplet impacts on various porous surfaces.
유수분리를 위한 3D 프린팅 기술 기반의 마이크로하이드로사이클론
김주완 ( Joowan Kim ),김원진 ( Won Jin Kim ),박승 ( Seung Park ),박채리 ( Cherry Park ),유정흠 ( Jung Heum Yoo ),지인서 ( Inseo Ji ),강전웅 ( Jeon-woong Kang ),김태영 ( Taeyung Kim ),홍지우 ( Jiwoo Hong ) 한국화학공학회 2022 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.60 No.2
Oil contained in domestic and industrial wastewater or marine spilled oil gives rise to severe environmental pollution issues such as water pollution and ecosystem destruction. The membrane filtration method as one of representative oil/water separation strategies has technological challenges such as membrane fouling and low separation rate. In this work, we devise a 3D-printed microhydrocyclone for oil/water separation by utilizing a digital lighting processing-based 3D printer. We demonstrate that the 3D-printed microhydrocyclone can effectively separate oil and water phases from oil-in-water emulsion.