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。
Two types of glass frit samples, XF100 and XF105 (Johnson Matthey), in combination with conventional inorganic flame retardants, Ultracarb (mixture of huntite and hydromagnesite) and alumina trihydrate, were introduced into a thermoset vinyl ester resin. The methodology involved dispersing glass additives with other t…
The use of refractory metal plasma-facing components (PFCs) requires intensive research in all areas, i.e., in plasma-wall interaction, in the physics of the confined plasma, diagnostic, and in material development. Only a few present-day divertor tokamaks-mainly Alcator C-Mod (C-Mod) and ASDEX Upgrade (AUG)-gained ex…
The solubilities of 5-amino- N, N ′-bis(2,3-dihydroxypropyl)-2,4,6-triiodobenzene-1,3-dicarboxamide in ethanol + water mixtures at temperatures from (318.15 to 353.15) K were measured. The experimental data were correlated with the Apelblat model. The calculated values of Apelblat model were found to show a fine repre…
Several series of $\text{A}/{\text{SnO}}_{2}$ and Mn/B multilayers, where A and B are thin layers (0.4--10.1 nm) of ${\text{SnO}}_{2}$, ${\text{SiO}}_{2}$, Si, Al, Mn, or ${\text{MnO}}_{x}$, have been investigated magnetic, electronic, and structurally. The study demonstrates that the detected ferromagnetism is relate…
Anthranilate synthase (AS), aminodeoxychorismate synthase (ADCS), isochorismate synthase (IS), and salicylate synthase (SS) are structurally homologous chorismate-utilizing enzymes that carry out the first committed step in the formation of tryptophan, folate, and the siderophores enterobactin and mycobactin, respecti…
High‐density (∼8 g/cm 3 ) heavy metal oxide glasses composed of PbO, Bi 2 O 3 , and Ga 2 O 3 were produced, and refractivity parameters (refractive index and density) were computed and measured. Refractive indices were measured at six discrete wavelengths from 0.633 to 10.59 μm using a prism coupler, and data were fit…
This paper presents the temperature dependence of the mechanical properties of structural high-strength low-alloy (HSLA) ASTM A709 Gr50 steel (En10025: S355 JO; DIN: ST 52-3U). Engineering stress-strain diagrams at lowered and elevated temperatures are presented. Creep responses for selected constant stresses at selec…
Abstract The ball milling process was used to obtain nanocrystalline cubic silicon. Between 5 and 10 h of milling, amorphous silicon was also formed. The differential scanning calorimetry (DSC) spectrum of a powder milled for 10 h showed that the amorphous–crystalline phase transition occurs at about 450 °C. According…
The velocity and stress autocorrelation decay in a dissipative particle dynamics ideal fluid model is analyzed in this paper. The autocorrelation functions are calculated at three different friction parameters and three different time steps using the well-known Groot/Warren algorithm and newer algorithms including sel…
The bridge determines the size of the loop? Palladium-catalyzed cross-coupling of borylporphyrins led to the construction of β-pyridine-bridged porphyrin nanorings in good yields (around 55–60 %; see scheme). The photophysical study revealed that these nanorings exhibit weakly coupled chromophores and longer fluoresce…
The long-standing problem of the oxygen self-diffusion mechanism in silicon dioxide, a prototypical oxide, both in the crystalline and in the amorphous phase, is studied from first principles. We demonstrate that the widely used local-density approximation to density functional theory (DFT) predicts a kinetic behavior…
We report the first measurement of the hindrance function for sedimentation or creaming of disk-shaped colloids via the analytical centrifugation. Disks align with the external flow right above a volume fraction of a few percent, and this effect is extremely sensitive to the aspect ratio of disks. Due to this alignmen…
Weak polybase branched poly(ethyleneimine) (BPEI) and strong polyacid poly(styrenesulfonate) (PSS) were assembled into BPEI/{PSS/BPEI}(n) layer-by-layer (LBL) films on electrodes by electrostatic interaction between them with spin-coating approach. The cyclic voltammetric (CV) response of ferrocenedicarboxylic acid (F…
A ceramic (SiOC) and carbon nanotube (CNT) composite (SiOC/CNT) is fabricated by a one‐step process via the in situ growth of CNTs in a ceramic body during its formation from a polymer precursor (polysiloxane) by pyrolysis. The in situ growth of CNTs is realized by premixing a metal catalyst in the precursor and addin…
We have identified two structure phases for a surface boron layer on transition-metal diborides ${\text{ZrB}}_{2}(0001)$ and ${\text{NbB}}_{2}(0001)$ using first-principles calculations. Surface-formation free-energy calculations of various surface structures combined with preliminary molecular-dynamics simulations re…
LIMO's unique production technology is capable to manufacture free form surfaces on monolithic arrays larger than 250 mm with high precision and reproducibility. Different kinds of intensity distributions with best uniformities or customized profiles have been achieved by using LIMO's refractive optical elements. Rece…
We sought to computationally design model collagen peptides that specifically associate as heterotrimers. Computational design has been successfully applied to the creation of new protein folds and functions. Despite the high abundance of collagen and its key role in numerous biological processes, fibrous proteins hav…
Ganz einfach gelingt die Umwandlung eines teilchenstabilisierten Öl-Wasser-Systems von einer üblichen Öl-in-Wasser-Emulsion (links im Bild; grün: Öl, rosa: Wasser) zu einer Wasser-in-Öl-Emulsion mit einem hohen Anteil an dispergierter Phase (rechts) bei einem festgelegten Öl/Wasser-Verhältnis (27:73 Vol-%) durch Wechs…
Magnetic refrigeration is an emerging green technology based on the magnetocaloric effect (MCE) in solid-state refrigerants with environmentally desirable characteristics. The active magnetic regenerator is a special kind of regenerator for the active magnetic regenerative cycle (AMR), in which the magnetic material m…
Reactions of dirhenium decacarbonyl with the two azoaromatic ligands, L a = (2-phenylazo)pyridine and L b = (4-chloro-2-phenylazo)pyridine (general abbreviation of the ligands is L) afford paramagnetic rhenium(II) complexes, [Re II (L •− ) 2 (CO) 2 ] ( 1 ) ( S = 1/2 ground state) with two one - electron reduced azo-an…