Materials Literature
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The dry reforming of propane with CO2 was carried out in a thermocatalytic reactor. The catalytic performance of AAO supported catalysts with various nickel and Ceria loadings at different reaction temperatures. The obtained results show that both C3H8 and CO2 conversions increased with increasing ceria loading up to…
The porosity/binder ratio, η/Civ, is possibly the main development in the field of soil stabilization over the last many decades. η/Civis shown to be the controlling factor of artificially cemented materials mechanical behavior. Experimental results were presented to highlight this ratio applicability for determinatio…
La evolucion de las tecnologias de mecanizado existentes nos lleva hacia el denominado Mecanizado Ecologico. Las primeras etapas del presente trabajo se han orientado al desarrollo de un proceso de biomecanizado en continuo sobre piezas de cobre libre de oxigeno, mediante la bacteria Acidithiobacillus ferrooxidans, co…
After the enforcement of Waste Management Law in Korea from 1987, a systematic waste management has been made. Since then major effective policies and strategies by the government were utilized to promote reduction and recycling of waste and to implement appropriate technologies for disposing waste in safe and permane…
Der Schwerpunkt der Arbeit lag auf Studien der Gitterdynamik (Phononen) in den Manganatverbindungen La1-xSrxMnO3 mit x = 0.2 und x = 0.3, den Seltenerd-Tritelluriden TbTe3 und DyTe3 sowie dem Übergangsmetall-Diselenid TiSe2 mittels inelastischer Neutronen- und Röntgenstreuung. Die Untersuchungen konzentrierten sich au…
Aiming at detection of defects in ferromagnetic and non-ferromagnetic metals, the finite element models of circular probes with vacuum and non-vacuum shieldings were built. In the presence of flaws, distribution of eddy currents and magnetic field for two kinds of metal materials were simulated. The validity of simula…
Alginate is a linear polysaccharide extracted from brown algae and composed of homopolymeric blocks of (1-4)-linked β-D-mannuronic acid (M) and α-L-guluronic acid (G). The most representative features of alginates are the stiffnesses of their polymer chains and their affinities to various transition metal cations, suc…
Conventional conductive polymer nanocomposites are hard to improve radiation efficiency of heat, electromagnetic interference (EMI) shielding and absorbing performance simultaneously. We fabricated multifunctional nanocomposites using polymer matrix containing silver NWs, multiwalled carbon nanotubes (MWCNT), and zinc…
Acicular ferit was investigated from the viewpoint of orientation relationships among acicular ferit, prior austenite, and inclusions. The Baker-Nutting orientation relationship was observed between acicular ferit and a TiO layer forming at inclusion surfaces. Meanwhile, the Kurdjumov-Sachs orientation relationship wa…
A theoretical investigation has been carried out to find the reflection and transmission coefficient due to the interaction of electromagnetic waves with a chiral slab sandwiched between graphene layers. The reflection and transmission coefficients at graphene-chiral and chiral-graphene interfaces have been obtained a…
Conjugated polymers with low band gap have been come into the spotlight for high performance of organic solar cells due to their broad absorption range in the visible and near-infrared region leading to high current density. Unfortunately, lowering band gap often lead to high HOMO level of the polymers, which makes lo…
Global warming was becoming more and more of a concern as a result of the continuing emission of a major greenhouse gas, carbon dioxide (CO₂), which is generated from fossil fuel combustion. However, fossil fuels were demanded as an essential resource. Therefore, it is essential to technology of reduced CO₂ emission.…
대표적인 전도성 고분자인 PEDOT:PSS 필름은 높은 전기적 전도도, 광투과도, 구조적 안정성 등으로 인해 유기전자 분야에서 많은 관심을 모으고 있다. 그러나 1S/cm 이하의 낮은 필름 전도도는 다양한 응용분야의 제약을 초래하고 있으며, 현재까지의 PEDOT:PSS 연구는 dimethyl sulfoxide, ethylene glycol, d-sorbitol등 높은 끓는점을 갖는 극성 용매나 황산 등을 첨가하여 전도도를 개선하는 것에 집중되어 왔다. PEDOT:PSS 필름의 전도도 향상에 대한 연구는 많이 진행된 반면, 필름의 낮은 내수성과 표면 특성에 대한 개선…
Impact de l’autoxydation sur les propriétés des tanins
수열합성법에 의해 구리(II) 착물, [Cu(4,4``-bpy)(SO4)2(H2O)3].2H20(1)(4,4-bpy=4,4-Bipyridine)을 합성하였고 원소분석과 단결정 X-선 회절법으로 구조를 확인하였다. 착물에서 구리(II) 이온들은 6-배위 구조로 되어 있으며 두개의 구리(II) 이론들은 4,4-bipyridine에 의해 연결되어 1D-골격을 가지고 있다.
Purpose: To investigate factors influencing the evaluation of background parenchymal enhancement (BPE) at follow-up breast magnetic resonance imaging (MRI) after adjuvant endocrine therapy. Materials and Methods: One hundred twelve women with breast cancer and MRI of the contralateral unaffected breast before and afte…
Polymer electrolyte membrane(PEM) fuel cells is an attractive future generation for a variety of advantages about environments. There are several fascinating reasons for operating PEMFC at high temperature and low related humidity. For these reasons, studies of proton exchange membrane with high proton conductivity an…
In this work, the electrochemical behaviors of grahphene/TiO2 composite were studied. The GO was synthesized by modified Hummers' method. The chemical composition analysis of grahphene/TiO2 composite was confirmed by X-ray photoelectron spectroscopy. The structural properties were characterized by XRD. Electrochemical…
Small interfering RNA (siRNA) has recognized as a potential drug due to its target-specific gene silencing. Due to their innate physiochemical characteristics, however, the systemic delivery of naked siRNA fails to achieve therapeutically relevant gene silencing. To this end, a variety of cationic polymers and lipids…
Different types of anion conducting membranes with low vanadium co-ion crossover were evaluated for a vanadium redox flow battery. Three kinds of polymer electrolytes consisting of anion exchangeable functionals were introduced into porous hydrocarbon substrates and crosslink-polymerized by radical polymerization in t…