Materials Literature
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A series of experiments using atmospheric-pressure non-thermal plasma coupled with transition metal catalysts were performed to remove ethylene from agricultural storage facilities. The non-thermal plasma was created by dielectric barrier discharge, which was in direct contact with the catalyst pellets. The transition…
Hysteresis curves were calculated according the Stoner-Wohlfarth (SW) model using values of K2/K1 from zero up to 0.25 (where K2 is the 2nd order anisotropy constant and where K1 is the 1st order anisotropy constant). The SW calculations assume Nd2Fe14B nanocrystalline magnets with single domain particle size (grain d…
A multi-way control system for spun yarn breakage detecting and tow stopping is presented for linen wet spinning frame upgrade in medium-sized businesses of southeastern China. The signals from periodic rotations of spun yarns are picked by piezoelectric sensors. After input protection and multiplexers, the weak volta…
We characterized the one-electron reduction of oligodeoxynucleotides with a 2-oxopropyl group on a thymine base ( $d^{oxo}T$ ) and applied the reaction to the radiolytic activation of DNAzyme function. We designed a system in which the DNAzyme function of cleaving mRNA was suppressed by introduction of $d^{oxo}T$ into…
가교제 사용 없이 가교반응을 진행할 수 있는 경화시스템에 자기응답 입자를 분산시켜 자기유변 탄성체를 제작하였다. 클로로프렌 고무(CR)와 Maleic Anhydride(MAH)의 열과 압력을 이용한 개질법인 dynamic maleation의 공정을 이용하여 10 phr, $100^{\circ}C$ 에서 최적의 grafting ratio를 가짐을 FT-IR를 이용하여 확인하였다. 개질된 CR-g-MAH와 에폭시화 천연고무(ENR)를 반응 블렌드시켜 가교시켰으며 가교특성은 고무레오미터를 이용하여 측정하였으며, 30 wt%의 ENR를 첨가하였을 때 성형하기 적합한 스코치…
Pit morphology on sensitized 310S stainless steel has been studied using an image processing method based on reflected light microscopy (profile and surface). Salt Spray test has been used to induce the pitting corrosion. Morphological pits character do not depend on sensitization heat treatments here applied. Nucleat…
Polymer properties can be experimentally tailored by adding small amounts of different fillers, but they are expensive with respect to the classical polymer materials. This paper has been studied the enhancement and controlling of electric and dielectric properties of low-density polyethylene (LDPE) polymer materials…
Plasma immersion ion implantation (PIII) method is often used to cleaning and enhancing mechanical properties of the surface of materials. In this work, the AISI 304 was treated in a PIII system to improve tribological and wear resistance properties. The new HV pulser was prepared to reach high average power (10 kW) u…
An efficient solution algorithm for simulating free surface problem is presented. Navier-Stokes equations for variable density incompressible flow are employed as the governing equation on Cartesian meshes. In order to describe the free surface motion efficiently, VOF(Volume Of Fluid) method utilizing THINC(Tangent of…
Micromagnetics and its particular case, the Stoner-Wohlfarth model, are reviewed. The possibility of occurrence of curling is discussed. The use of the Felix Bloch approximation for exchange energy description should be avoided. A tensor 3x3 has to be used for appropriate evaluation of the exchange energy in phases wi…
Nypa Fruticans fiber (NFF) was used as filler in polylactic acid (PLA) and recycled low density polyethylene (rLDPE) biocomposites. The biocomposites were prepared by using a Brabender Plasticorder EC Plus. The effects of NFF content and Ultra-Plast TP01 (TP01) on the tensile properties and morphology were investigate…
Standard electrospinning deposits disorderly nanofibers on a conducting collector owing to unstable whipping of the jet. Nevertheless, biological engineering requires orderly electrospun nanofibers to improve mechanical properties and cellular proliferation. An attempt is made to fabricate well-orientated nanofibers b…
Titanium is the most adequate metallic material for orthopedic or dental implants fabrication, due to a very favorable combination of properties, when compared with other metals, such as good corrosion resistance, good mechanical properties, relatively low density, elasticity modulus close to that of bone and good bio…
Abstract The upper critical field (H c2 ) was determined by applying a magnetic field along the ab plane and c axis for two single crystals of BaFe 2-x Ru x As 2 (x=0.48 and 0.75). The anisotropy of the H c2 (0), γ(0)=H c2ab (0)/H c2c (0), was ~1.6 for x=0.48and ~2.3 for x=0.75. The angle-depen dent resistance measure…
수평 전기로에서 $MnAl_2S_4$ 다결정을 합성하여 HWE(Hot Wall Epitaxy)방법으로 $MnAl_2S_4$ 단결정 박막을 반절연성 GaAs(100)기판에 성장시켰다. $MnAl_2S_4$ 단결정 박막의 성장 조건은 증발원의 온도 $630^{\circ}C$ , 기판의 온도 $410^{\circ}C$ 였고 성장 속도는 $0.5{\mu}m/hr$ 였다. 이때 $MnAl_2S_4$ 단결정 박막의 결정성의 조사에서 이중결정 X-선 요동곡선(DCRC)의 반폭치(FWHM)도 132 arcsec로 가장 작아 최적 성장 조건임을 알 수 있었다. $MnAl_2S_4$…
Excellent tribological properties of hard materials surface are desirable in several sectors of industry. Diamond-like carbon (DLC) coatings are well known for their low friction, excellent wear resistance, and high hardness. In this work, DLC films were deposited on AISI M2 steel using a modified PECVD pulsed-DC disc…
UNLABELLED: With the advent of age of big data and advances in high throughput technology accessing data has become one of the most important step in the entire knowledge discovery process. Most users are not able to decipher the query result that is obtained when non specific keywords or a combination of keywords are…
The present study aimed to explore possible thermal processing conditions of a steel AISI 43100, seeking the best combination of properties, especially strength and ductility. Different routes of heat treatments for continuous cooling were applied to the material, and the mechanical properties were evaluated by tensil…
Oil adsorption capacities of reduced graphene oxide (RGO) and graphite oxide (GO) were investigated and compared with commercial graphite products. Adsorption capacities were determined by measuring the adsorbed amounts using a tea bag containing the adsorbent materials. RGO and GO showed higher adsorption capacities…
Effects of sealant and sealing procedure on corrosion resistance of high velocity oxy-fuel (HVOF) sprayed coatings were studied. HVOF-sprayed CrC-20NiCr coatings were sealed using three commercial sealants based on phenolics and epoxy. Penetration depth of sealants, measured by fluorescent microscope technique, was be…