Materials Literature
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The R(4.5) and P(6.5) branch features of the XX (0, 0) band of praseodymium monoxide (PrO) have been studied at a resolution of approximately 50 MHz field free and in the presence of static electric and magnetic fields. The permanent electric dipole moments, mu(el), of 3.01(6) D and 4.72(5) D for the X(2) (Omega = 4.5…
BACKGROUND: In the last decade, a significant improvement in detecting remote similarity between protein sequences has been made by utilizing alignment profiles in place of amino-acid strings. Unfortunately, no analytical theory is available for estimating the significance of a gapped alignment of two profiles. Many e…
카드뮴이온 검출을 위한 optode를 triacetylecelluose 막에 있어 dithizone을 고정에 의하여 디자인 되었다. Optode 막이 카드뮴을 포함하는 611 nm 에서 흡수 변화가 가능한 실제시료에 도입 되었을 때 녹색에서 붉은 색으로 색 변화가 일어났다. $Cd^{2+}$ 이온 검출은 검출한계가 0.025 ${\mu}g\;ml^{-1}$ (25 ng $ml^{-1}$ )이고 0.3-3 ${\mu}g\;ml^{-1}$ (2.67-26.67 ${\mu}M$ )범위에서 가능하였다. Optode의 반응 시간은 $Cd^{2+}$ 이온에 의존하여 15분 안…
The negative valve overlap has been shown as one of the most effective means to achieve controlled autoignition combustion in a four-stroke gasoline engine. A number of researches have been carried out on the performance and emission characteristics of CAI engines but there are still some fundamental questions that ar…
Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and ion chromatography(IC) were employed to analyze the thermal behavior of $Li_xCoO_2$ cathode material of lithium ion battery. The mass loss peaks appearing between 60 and 125 ${^{\circ}C}$ in TGA and the exothermic peaks with 4.9 and 7.0 J/g…
Beginning in 2007, heavy-duty engine manufacturers in the U.S. have been responsible for verifying the compliance of in-use vehicles with Not-to-Exceed (NTE) standards under the Heavy-Duty In-Use Testing Program (HDIUT). This in-use testing is conducted using Portable Emission Measurement Systems (PEMS) which are inst…
A kinetic carbon monoxide (CO) emission model is developed to simulate engine out CO emissions for conventional diesel combustion. The model also incorporates physics governing CO emissions for low temperature combustion (LTC). The emission model will be used in an integrated system level model to simulate the operati…
Fe(PO 3 ) 3 with different morphologies has been synthesized using H 3 PO 4 and Fe 2 O 3 as starting compounds by microwave sintering. The structure and morphologies of resultant samples were characterized by X-ray diffractometry, thermogravimetry/differential scanning calorimetry, Fourier transform infrared spectrosc…
Abstract The treatment of [{Pd(C6H4N=NC6H5)(μ‐Cl)}2] (5) with AgPF6/NH4PF6 in acetone, followed by the addition of two molar equivalents of 1,4,7‐trithiacyclononane (9S3), gives the deep red complex [Pd(C6H4N=NC6H5)(9S3)][PF6] (6A) in high yield, whereas the direct reaction of 5 with two molar equivalents of 9S3 gives…
This paper presents a lumped parameter (LP) model to compute diesel soot morphology, in terms of radii of gyration and fractal diameters, starting from the engine operating conditions. The global soot production inside the combustion chamber is evaluated, too. Such a model represents an enhancement of a previously dev…
An iteration calculation has been carried out to study electron transport properties in zincblende and wurtzite GaN materials. The two-mode nature of the polar optic phonons is considered jointly with deformation potential acoustic, piezoelectric, ionized impurity scattering. Band non-parabolicity, admixture of p func…
The characteristics of three-way-catalyst during engine start process were investigated based on a simulated start/stop test system for HEV application. Although the catalyst has already reached its light-off temperature, the conversion efficiency is poor during engine start process due to the deviation of lambda from…
In the present research nano- ZrO2 particulates were dispersed in aluminum alloy (LM 13) by melt deposition technique followed by hot extrusion. The size of the particles dispersed varies from 50–80 nm and amount of addition varies from 3 to 15 wt.% in steps of 3%. Microstructural studies of the NMMCs developed indica…
Diesel Particulate Filters (DPF) are now considered as efficient solutions to reduce Diesel PM emissions. Concerned by environment, Renault will equip all serial production Diesel vehicles with this technology. The main issue for these devices is the periodical regeneration necessary to eliminate the accumulated soot.…
Pyrimethamine (PYR), a drug effective against protozoan parasites, such as Toxoplasma gondii and Plasmodium falciparum, is poorly water soluble and exhibits marked variation in oral bioavailability. This study was aimed at investigating the possibility and extent of enhancement of the dissolution properties of PYR via…
Higher efficiency red organic light emitting devices (OLEDs) were obtained by employing Ir (III) complexes with 1-phenylbutane-1, 3-dione (ba) as the second ligand than that with acetylacetone (acac) as the second ligand, which were attributed to the intramolecular energy transfer existed in these complexes. The reaso…
Double-doped magnetic particles that incorporated magnetites into both the surface and inside the silica cores were fabricated via the sol-gel reaction of citrate-stabilized magnetites with silicon alkoxide. Double-doped magnetic particles were easily fabricated and exhibited an higher magnetism in comparison to the s…
Vapor pressures of water over saturated solutions with regard to two salts, in the NaCl + KCl + H 2 O, NaCl + NaNO 3 + H 2 O, KCl + KBr + H 2 O, KCl + KI + H 2 O, KCl + KNO 3 + H 2 O, and KCl + K 2 SO 4 + H 2 O systems, are reported in the (278 to 323) K temperature range. The determined vapor pressures served to obta…
We investigate current-driven magnetization dynamics in synthetic ${[\text{Fe}/\text{Cr}]}_{10}$ multilayer antiferromagnets by using low-frequency voltage noise measurements. We observe suppression of the noise above a critical current density of about $2\ifmmode\times\else\texttimes\fi{}{10}^{5}\text{ }\text{A}/{\te…
In order to study the effects of air bulk motion and methane injection strategies on the development and pollutant levels of dual-fuel combustion, an intense experimental campaign was performed on a diesel common rail research engine with variable inlet configurations. Activating only the swirl or the tumble inlet val…