Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
PURPOSE: The purpose of this study was to develop an X-Band electron paramagnetic resonance imaging protocol for visualization of oxidative stress in biopsies. METHODS: The developed electron paramagnetic resonance imaging protocol was based on spin trapping with the cyclic hydroxylamine spin probe 1-hydroxy-3-methoxy…
The extractive desulfurization of a model and several real gasoline samples was investigated using imidazolium-based ionic liquids (ILs). Factorial design of experiments indicated that, among several process variables, the number of extraction steps and the IL/gasoline volume ratio were statistically highly significan…
Reverse logistics amended transportation of food waste from local collecting areas to designated treatment facilities produce enormous amounts of greenhouse gas. The Korean government has recently introduced the RFID technology in hopes of reducing CO2 production problems. In this study, we evaluated the reduction of…
The title compound, [(C2H5)4N][FeCl4], has at room temperature a disordered structure in the high-hexagonal space group P63mc. At 230 K, the structure is merohedrally twinned in the low-hexagonal space group P63. The volume has increased by a factor of 9 with respect to the room-temperature structure. At 170 and 110 K…
The influence of the composition of reduced CoMo, NiMo and NiW catalysts on the catalytic performance in hydrodeoxygenation (HDO) of phenol has been investigated. -Al 2 O 3 and TiO 2 were used as supports. Different activity orders were obtained over -Al 2 O 3 and TiO 2 supported catalysts reflecting the critical role…
GaN nanofilms (NFs) with different structures are grown on SiC substrates by pulsed laser deposition under different conditions. The synthesized GaN NFs are studied by X-ray diffraction, field-emission (FE) scanning electron microscopy, X-ray photoelectron spectroscopy, and atomic force microscopy. The GaN NFs are com…
We propose an explanation for the enhanced low- and high-energy tails of the vibrational density of states (VDOS) of nanoparticles (NPs) with respect to their bulk counterparts. Density functional theory calculations of the frequency and eigenvector of each mode allow us to identify radial breathing/multipolar and non…
A novel yellow smoke formulation, based on the environmentally benign dye Solvent Yellow 33, has been validated as a replacement for the current formulation specified for the M194 yellow smoke hand-held signal. Sieve testing has revealed a fine granulation for the candidate mixture, centered at 53 μm. In addition, com…
PURPOSE: Neurovascular regulation, including responses to neural activation that give rise to the blood oxygenation level-dependent (BOLD) effect, occurs mainly at the arterial and arteriolar level. The purpose of this study is to develop a framework for fast imaging of arterial cerebral blood volume (aCBV) signal sui…
The nonlinear electron dynamics in metallic nanoparticles is studied using a hydrodynamic model that incorporates most quantum many-body features, including spill-out and nonlocal effects as well as electron exchange and correlations. We show that, by irradiating the nanoparticle with a chirped laser pulse of modest i…
We have developed unique solar concentrators for solar-pumped solid-state lasers to improve both efficiency and laser output power. Natural sunlight is collected by a primary concentrator which is a 2 m×2 m Fresnel lens, and confined by a cone-shaped hybrid concentrator. Such solar power is coupled to a laser rod by a…
BACKGROUND: Transcatheter valve-in-valve (VIV) implantation has emerged as a novel treatment option in patients with degenerated aortic bioprostheses and high surgical risk. However, VIV implantation in small aortic bioprostheses using first generation TAVI devices has frequently resulted in high postprocedural gradie…
A new technique to realize a circular polarization selective surface (CPSS) implemented with Pierrot cells is proposed. This technique uses a folded flexible substrate, which enables the implementation of the 3D Pierrot cells on a single metal layer defined with precision printed circuit board techniques, without the…
A study was designed to investigate the potential benefits that ultracapacitors (UCs) may provide on the lifetime of lead-acid batteries. An experimental setup allowed the comparative cycling of two packs designed for a hybrid electric heavy-duty vehicle. Spectroscopy plots, charging current acceptability, and capacit…
An ultracold mixture of two different species of fermionic atoms can turn into a quantum coherent ``superfluid'' at certain mixing ratios as the fermions overcome their natural repulsion to pair up. Tuning the mixing can destroy the superfluid. A theoretical study shows that the breakdown of the superfluid corresponds…
The nature of cation−π interactions in a set of [Ru(η 6 -C 16 H 12 R 4 )(NH 3 ) 3 ] 2+3+ (R = F, CN, CH 3, and others), complexes was investigated with Su–Li energy decomposition analysis and the natural orbitals for chemical valence and the extended transition state method EDA-NOCV. The long-distance effects of elect…
Shape fluctuations in nanoparticles strongly influence their stability. Here, we introduce a quantitative model of such shape fluctuations and apply this model to the important case of Pt-shell/transition metal-core nanoparticles. By using a Gibbs distribution for the initial shapes, we find that there is typically en…
The origin of a high Neel temperature in a 5$d$ oxide, $\mathrm{Na}\mathrm{Os}{\mathrm{O}}_{3}$, has been analyzed within the mean-field limit of a multiband Hubbard model and compared with the analogous 4$d$ oxide, $\mathrm{Sr}\mathrm{Tc}{\mathrm{O}}_{3}$. Our analysis shows that there are a lot of similarities in bo…
The efficient isolation of low-abundance phosphopeptides from complicated biological samples containing a significant quantity of nonphosphopeptides and proteins is essential for phosphopeptidome research but remains a great challenge. In this Article, magnetic composite microspheres comprising a magnetic colloidal na…
The temperature-driven self-assembly of nonionic amphiphilic tailor-made triblock copolymers has been studied by DLS, NMR, ITC, and SAXS. The composition of these triblock copolymers is more complex than that of the vast majority of poly(2-alkyl-2-oxazoline)s: a statistical thermoresponsive (iPrOx) and hydrophobic (Bu…