http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yoon-Bong Hahn,Suk Lee,우마르아메드,Sang Hoon Kim,N. Koteeswara Reddy 한국화학공학회 2007 Korean Journal of Chemical Engineering Vol.24 No.6
vapor deposition (CFCVD) process using diethyl zinc and oxygen as precursors for zinc and oxygen, respectively. Mor-phological investigations revealed that the as-grown nanoneedles exhibited sharpened tips and wider bases, having thetypical diameters at their bases and tips, 6010 nm and 2010 nm, respectively. Detailed structural characterizationsconfirmed that the as-grown products were single crystalline with a wurtzite hexagonal phase and were grown pre-ferentially along the [0001] direction. The room-temperature photoluminescence (PL) spectrum showed a strong andsharp UV emission at 378 nm with a very weak, suppressed and broad green emission at 520 nm, substantiating goodoptical properties for the as-grown ZnO nanoneedles.
Chemical and biological sensors based on metal oxide nanostructures
Hahn, Yoon-Bong,Ahmad, Rafiq,Tripathy, Nirmalya The Royal Society of Chemistry 2012 Chemical communications Vol.48 No.84
<P>Unique and fascinating features of metal oxide nanostructures (MONs) have attracted considerable attention in recent years because without much effort, the MONs can be grown in many different nanoscale forms, thus allowing various novel devices of chemical and biological sensing to be fabricated. To improve the sensors performance by tailoring the properties of MONs through engineering of morphology, particle size, effective surface area, functionality, adsorption capability and electron-transfer properties have been extensively explored. This feature article collates the various MONs and their potential applications in the chemical and biological sensors for clinical and non-clinical applications.</P> <P>Graphic Abstract</P><P>Conceptual hybrid platforms of chemical and biological sensors based on metal oxide nanostructures. <IMG SRC='http://pubs.rsc.org/services/images/RSCpubs.ePlatform.Service.FreeContent.ImageService.svc/ImageService/image/GA?id=c2cc34706g'> </P>
A COLLISION MODEL FOR FINE PARTICLES IN A TURBULENT SYSTEM
Hahn, Yoon Bong 한국화학공학회 1994 Korean Journal of Chemical Engineering Vol.11 No.4
A model is proposed to describe the collision rate of small particles suspended in a turbulent system. The model combines the possible collision mechanisms: 1) collisions due to the relative velocity between fluid and particles, and 2) collisions due to the turbulent diffusion of particles. This model also accounts for the effect of particle concentration on the collision rate. It was found that the turbulent diffusion of particles plays an important role in the collision of equally sized particles as well as of unequally sized particles. The model predictions also show that the collision rate of particles is strongly affected by the concentration of solid particles and by the turbulence intensity. Much more reliable predictions than previously possible have been obtained with the present model.
창세기 1장의 ‘YOM’에 대한 성경적 논증과 과학적 이해
한윤봉(Yoon-Bong Hahn) 한국창조과학회 2021 Origin Research Journal Vol.1 No.1
창세기 1장에는 하나님이 6일동안 천지만물을 창조하신 내용들이 연대기적으로 명확하게 기록되어 있다. 기독교인들은 하나님의 창조를 고백하지만, 창조주간의 하루(YOM)에 대한 해석에는 다른 견해들이 있다. 그 이유는 하나님은 초차원적인 존재이기 때문에 ‘하나님의 시간’은 ‘사람의 시간’과 다를 것이라는 생각 때문이다. 본 레터(Letter)에서는 시간의 정의와 기원을 다루고, 나아가 창조주간의 하루를 ‘천년 이상의 긴 연대’로 해석해야 할지, ‘24시간 하루’로 해석해야 할지를 논하였다. 하루에 대한 과학적 정의와 성경적 정의가 일치하고, 안식일 계명을 지킨 히브리인들의 해석을 바탕으로 볼 때 창조주간의 하루는 24시간에 해당한다. 따라서 ‘24시간 하루’로 해석하는 것이 과학적으로 논리적으로 타당하며, 성경 전체를 통해서 하나님의 말씀을 이해하고 창세기의 역사성을 논할 때 가장 적절한 해석법이다. In Genesis 1, God’s creation of the heavens and the earth is clearly written chronologically. Although Christians confess God"s creation, there are different views on the interpretation of ‘YOM’, i.e. a day of Creation week. This letter deals with the definition and origin of time, and further discusses whether the YOM should be interpreted as ‘a long period of more than 1,000 years’ or ’24 hours a day’. According to the scientific and biblical definition of a day, and based on the interpretation of the Hebrews who kept the Sabbath commandment, the length of a day in Creation week corresponds to 24 hours a day. Therefore, it is scientifically and biblically reasonable to interpret ‘YOM’ as ‘24 hours a day’, and it is the most appropriate interpretation method when understanding God’s words throughout the Bible and discussing the historicity of Genesis.