현재 우리나라의 이륜자동차는 2006년 3월 기준으로 자동차관리법상 50㏄이상은 약 172만 5 천대로, 승용차, 화물차 다음으로 많은 비중을 차지하고 있다. ... 특히 이륜차의 책임보험 가입률은 일반자동 차와 비교할 때 턱없이 낮다. ... 더욱이 이륜자동차는 사고가 발생하게 되면 자동차보다 보호장치가 없고 운전자가 직접적인 사고의 충격을 받기 때문 에 부상 및 사망의 위험이 높다.
Also, the influence of the gas ratio of hydrogen and argonon the nanotube samples was analyzed by scanning ... From content variation of ferrocene and thiophene as the catalyst, morphological change of carbon nanotubes ... The influences of the experimental conditions on the morphology and microstructure of the product have
It could be resulted that elementalmercury adsorption ability of NPCs depended on their specific surface ... It could be resulted that elemental
mercury adsorption ability of NPCs depended on their specific surface ... In this work, nanoporous carbons (NPCs) were prepared by the self-assembly of polymeric
carbon precursors
ratio on the densification of short-carbon-fiber-reinforced, randomly oriented carbon/carbon-composite ... The results showed that effective densification strongly depended on the hot-pressing pressure and reinforcement ... The ‘hybrid carbon-fiberreinforced mesophase-pitch-derived carbon-matrix’ composite was fabricated by
As experimental results, many holes or cavernous structures were found on the fibersurfaces after the ... Activated carbon nanofibers(ACNF) were prepared from polyacrylonitrile (PAN)-based nanofibersusing CO2 ... The surface and structural characteristics of the ACNF were observed by scanning electron microscopy
Studies on current status and recommendations
of After-School care for elementary school student in ... the elementary schools have been conducted,
but program on concrete case abd comparative studies on ... program have been so scarce that we are
in need of them.
In this work, we studied the effects of electrochemical oxidation treatments of carbon fibers (CFs) ... on interfacial adhesion between CF and epoxy resin with various current densities. ... results, electrochemical oxidation treatment introduced oxygen functional groups and increased roughness on
course, whereas major and career identity as well as self career identity did not have effects on satisfaction ... self career identity(β=.452, p<0.01) had significant effects on major satisfaction. ... optic science puts effects on major satisfaction.
Also, the influence of the gas ratio of hydrogen and argonon the nanotube samples was analyzed by scanning ... Also, the influence of the gas ratio of hydrogen and argonon the nanotube samples was analyzed by scanning ... electron microscopy and transmission electron microscopy.Key words: carbon nanotube, pyrolysis, carbon
The surfaces of the carbon felts were chemically modified by alkaline and acidic solutions, respectively ... Surface modified carbon felts were utilized as an electrode for the removal of inorganic ions from seawater ... The potassium hydroxide (KOH) modified carbon felt exhibited high Brunauer-Emmett-Teller (BET) surface
The nitrogen to carbon ratio and specificsurface area decreased with an increase in the carbon-ization ... However, the maximum specificcapacitance of 208 F/g was obtained at a carbonization temperature of 800 ... The electrochemical performance of the nitrogen-doped microporous carbons after being subjected to different
It is expected to be that in the follow up study, longitudinal
research on the relationship with career ... than self-directed career education. ... The
satisfaction of career education shows similar results, but the relationship is not clear
compared
ratio on the densification of short-carbon-fiber-reinforced, randomlyoriented carbon/carbon-composite ... ratio on the densification of short-carbon-fiber-reinforced, randomly
oriented carbon/carbon-composite ... The results showed that effective densification stronglydepended on the hot-pressing pressure and reinforcement
The C-F bonds formed on surface of ACFs. ... The C-F bonds formed on surface of ACFs. ... The oxyfluorination effects of activated carbon nanofibers (OFACFs) were investigated for CO2 storage
One of the most acute problems in studying composite stress-strain states is determining the initial ... A thorough investigation of the initial stage of the stress-strain state is very important to finding ... The full stress–strain state of composite constructions consists of the initial (generated during the
seawater absorption in order to investigate the effect of the seawater absorptionon the mode I fracture ... It has been demonstrated in a previous study that carbon nanotube (CNT)/epoxy/basalt composites produce ... The results demonstrated that the compliance of the seawater-absorbed specimen was larger than that of
As experimentalresults, many holes or cavernous structures were found on the fiber surfaces after the ... As experimental
results, many holes or cavernous structures were found on the fiber surfaces after the ... Activated carbon nanofibers (ACNF) were prepared from polyacrylonitrile (PAN)-basednanofibers using CO2
in a higher specific surface area compared to the carbon fiber based on Pitch B (Pitch A, 2053 m2/g; ... The carbon fiber web based on Pitch A was activated more readily with lower activation energy, resulting ... properties of their fibers after oxidative stabilization, carbonization, and activation.