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S. HONG,K. CHO,고병식 한국자동차공학회 2013 International journal of automotive technology Vol.14 No.3
This paper is to investigate the auditory recognition distance with several types of vehicles including two types of IC engine vehicle (diesel and gasoline), fully electric vehicle and hybrid vehicle. For this investigation, two experiments were performed. The first experiment was conducted with two low speeds (20 km/h and 30 km/h) on public road similar to proving ground in order to indicate whether a car comes to a subject with two age groups (above and below 60 years old). The second experiment was done on underground parking lot to detect whether there is a car or not when one of the vehicles is under engine/motor idle case. The distance between subject and car is defined as an auditory recognition distance. In addition to the mean value used usually in statistics, the mode value was introduced to represent the typical auditory recognition distance from both sets of experimental data.
항 - IgG 항체에 의한 차단형 TSH 수용체 항체의 자극형 항체로의 전환
송민호(Min Ho Shong),이가희(Ka Hee Yi),조보연(Bo Youn Cho),이홍규(Hong Kyu Lee),고창순(Chang Soon Koh),민헌기(Hun Ki Min),송영기(Young Kee Shong) 대한내과학회 1991 대한내과학회지 Vol.41 No.5
We examined the conversion phenomenon of thyrotropin rceptor-bound blocking type immunog-lobulin G to the stimulating type by antihuman IgG antibody for the evaluation of the mechanism involved in the conversion, in vitro. Blocking-type IgG was purified from a patient with primary myxedema. In the conversion experiment. FRTL-5 cells were first incubated with blocking-type lgG solution at 37°C for 30 min, then washed with Hanks Balanced Salt Solution and, secondly, incubated with the solution containing antihuman IgG antibody at 4°C for 1.5 h and then for 3 h at 37°C. The antihuman IgG antibody to the cell-bound blocking type IgG resulted in an increase of Camp production in a dose dependent manner. Of the several types of antihuman IgG antibodies tested, antibodies against F fragment and divalent Fab frament showed the most effective conversion, while the least effective were those against the F, fragment. IgG from patients with high titer of rheumatoid factor did not convert cell-bound blocking type IgG to the stimulating type. Antihuman IgG antibody did not interfere with the TBII activity of the blocking type IgG antibody did not interfere with the TBII activity of the blocking type IgG. Simultaneous addition of antihuman IgG antibody and TSH (0.1 Mu/ml) increased Camp production to a greater degree than the individual addition of either. These results suggest that blocking-type TSH receptor antibody and stimulating-type antibody bind to the similar epitope of TSH eceptor, and that IgG against TSH receptor antibodyr may also play a patho-physiological role in vivo.
Synthesis of indium tin oxide (ITO) nanoparticles in supercritical methanol
Shong, B.,Shin, N.,Lee, Y.H.,Ahn, K.H.,Lee, Y.W. PRA Press ; Elsevier Science Ltd 2016 The Journal of supercritical fluids Vol.113 No.-
Indium oxide (In<SUB>2</SUB>O<SUB>3</SUB>) and indium tin oxide (ITO; Sn-doped In<SUB>2</SUB>O<SUB>3</SUB>) nanoparticles are synthesized via a solvothermal method using surfactant-free supercritical methanol. X-ray diffraction analysis of the products indicates that crystalline indium oxide is formed within 2min at temperatures as low as 250<SUP>o</SUP>C. Transmission electron microscopy shows that the particles are single crystals and have a cubic shape with an edge length of about 20nm. The crystallite size of the particles calculated from X-ray diffraction is consistent with the particle size. The electrical resistivity and lattice parameters of the synthesized ITO nanoparticles vary as a function of tin content.
Formation of Germa-ketenimine on the Ge(100) Surface by Adsorption of <i>tert</i>-Butyl Isocyanide
Shong, Bonggeun,Yoo, Jong Suk,Sandoval, Tania E.,Bent, Stacey F. American Chemical Society 2017 JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Vol.139 No.25
<P>Reactions of the (100) surfaces of Ge and Si with organic molecules have been generally understood within the concept of 'dimers' formed by the 2 x 1 surface reconstruction. In this work, the adsorption of tent-butyl isocyanide on the Ge(100)-2 x 1 surface at large exposures is investigated under ultrahigh vacuum conditions. A combination of infrared spectroscopy, X-ray photoelectron spectroscopy, and temperature-programmed desorption experiments along with dispersion-corrected density functional theory calculations is used to determine the surface products. Upon adsorption of a dense monolayer of tert-butyl isocyanide, a product whose structure resembles a germa-ketenimine (N=C=Ge) with sigma donation toward and pi back-donation from the Ge(100) surface appears. Formation of this structure involves divalent-type surface Ge atoms that arise from cleavage of the Ge(100)-2 x 1 surface dimers: Our results reveal an unprecedented class of reactions of organic molecules at the Ge(100) surface.</P>
The Determination of Career-Path and Occupational Segregation in the Labor Market
Shong, Il Ho 한국생산성학회 2002 THE JOURNAL OF PRODUCTIVITY Vol.8 No.1
This paper presents a new definition of career-path based upon women's previous working history and their important characteristics related to the labor force participation. Unlike previous studies, a bivariate selectivity approach is used to estimate the earnings gap between female-dominated and other occupations for specific group of female labor market participants. Because of a different statistical technique, two important decisions for women who must decide before entering the labor market are considered, namely career-path and occupational segregation decisions. Because this approach corrects the possible selection bias, the estimates of wage equations are expected to be consistent. According to the empirical results from this study, the explanatory variables in wage equations cannot explain a large portion of the wage disparity between two types of occupations.
Autocatalytic Dissociative Adsorption of Imidazole on the Ge(100)-2 × 1 Surface
Shong, Bonggeun,Kachian, Jessica,Bent, Stacey F. American Chemical Society 2017 The Journal of Physical Chemistry Part C Vol.121 No.38
<P>The adsorption of imidazole on the Ge(100)-2 X 1 surface is studied with ultrahigh vacuum infrared spectroscopy experiments and density functional theory calculations. Imidazole datively bonds to the surface through its pyridinic nitrogen at low coverage, while dissociation of the pyrrolic N-H is observed upon larger exposure. The coverage-dependent change in the product distribution-is explained by autocatalytic activation of the dissociative adsorption via interaction between adjacent imidazole adsorbates. These results suggest an alternative explanation for the previously studied adsorption chemistry of bifunctional ethylenediamine on Ge(100)-2 X 1.</P>