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。
The Use of Robotics and Automation in Nuclear Decommissioning Derek W. Seward, Mohamed J. Bakari Abstract: The paper reviews the scope for automation and robotics in the rapidly expanding field of nuclear decommissioning. The basic strategies for decommissioning are discussed together with the essential physical steps…
The new ruthenium compound [Ru(NO)(pysiS4)]Br (3) (pysiS4 = 2,6-bis(3-triphenylsilyl-2-sulfanylphenylthiomethyl)pyridine), containing sterically bulky SiPh3 groups ortho to the thiolate donors, has been synthesized. In solution, 3 releases NO efficiently on exposure to visible light (lambda >/= 455 nm) at room tempera…
We present magnetization and specific heat data of a ${\mathrm{La}}_{5∕3}{\mathrm{Sr}}_{1∕3}\mathrm{Ni}{\mathrm{O}}_{4}$ single crystal in high magnetic fields. From the charge and spin stripe ordering temperatures, as well as a magnetic low temperature transition, we have constructed the electronic phase diagram for…
We study the interplay between Auger effects and ionization processes in the limit of strong electronic confinement in core/shell CdSe/ZnS semiconductor nanocrystal quantum dots. Spectrally resolved fluorescence decay measurements reveal a monotonic increase of the photoluminescence decay rate on excitation density. O…
Abstract Summary: Poly(vinyl alcohol) (PVA) was derivatized by polymer analogous reaction with thienyl acryloyl chloride and processed to submicrometer fibers by electrospinning from aqueous solution. Water solubility of otherwise water‐soluble PVA fibers was reduced considerably by UV crosslinking of thienyl acrylate…
The synthesis of a series of photochromic compounds incorporating a phenylquinoline unit and the photophysical and electric transport properties are described. The dyad and polymer with a quinoline unit show a high quantum yield due to the enforced antiparallel conformation of the dithienylethene moieties. High carrie…
Treatment of [U(Cp*) 2 Cl 2 ] with Na 2 dddt in thf afforded the “ate” complex [U(Cp*) 2 Cl(dddt)Na(thf) 2 ] ( 1 ), and the salt-free compound [U(Cp*) 2 (dddt)] ( 2 ) could be extracted from 1 with toluene (Cp* = η-C 5 Me 5; dddt = 5,6-dihydro-1,4-dithiin-2,3-dithiolate). Reduction of 2 with Na(Hg) or addition of Na 2…
ZnO nanostructures with peculiar morphology were synthesized in large quantities via catalyst-free thermal evaporation. Both ZnO nanopushpins with very thin and flat cap on top of the nanorods, and regular hexagonal nanotubes, can be obtained in the same run of growth in different regions. The ZnO nanopushpins and nan…
We report an observation of room temperature ferromagnetism in Ge nanowires doped with Mn. High-density arrays of ${\mathrm{Ge}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\phantom{\rule{0.2em}{0ex}}(x=1%--5%)$ nanowires with the smallest diameter of 35 nm have been synthesized within the pores of anodized aluminium oxide mem…
Vinyl acetate is processed to produce polymers and copolymers used in water based paints, adhesives, paper coatings or non-woven binders and various applications at moderate temperatures. The polymerization processes used include solution, suspension and emulsion processes. Many incidents involving the runaway polymer…
Nanostructured scandium hydrous oxides were hydrothermally synthesized at 180 degrees C for 18 h, using NaOH, NH(4)OH, and KOH as the bases. They were characterized by means of X-ray diffraction (XRD), transmission electron microscopy (TEM), N2 adsorption, thermogravimetry and differential thermal analysis (TG-DTA), i…
A novel hydrophilic and negatively charged azobenzene-bearing amino acid, 4'-carboxyphenylazophenylalanine (azoAla 1), has been designed and synthesized for investigation of the photochemical regulation of the enzyme activity. The properties of photoisomerization and thermal stability of the cis-isomer were similar to…
Twenty-seven samples in the series of mixed double perovskites of the type A 2 NiWO 6 where A is a suitable alkaline earth cation or combination of such cations (Ca, Ca with Sr, Sr, Sr with Ba, or Ba) have been prepared using NiWO 4 as a starting material. The structures of the oxides have been determined using synchr…
The crystal structures of [MnTPP]{Ni[S2C2H(CN)]2} [MnTPP = (meso-tetraphenylporphinato)manganese(III)] and [MnTPP]{Ni[S2C2(CN)2]2} have been determined. These salts possess trans-mu-coordination of S = 1/2 {Ni[S2C2H(CN)]2}*- and {Ni[S(2)C(2)(CN)(2)](2)}*- to Mn(III) and form parallel 1-D coordination polymer chains ex…
The segregation of the low-molecular-weight fractions on the crystal growth of polydisperse polymers has been identified as a general phenomenon by means of dynamic Monte Carlo simulations of lattice polymer systems. Its mechanism was elucidated on the basis of the intramolecular nucleation model. A unified scheme has…
Risk assessment in the environmental health sciences focuses on understanding the nature of environmental exposures and the potential harm posed by those exposures which in turn is determined by the perturbation of biological pathways and the individual's susceptibility to damage. While there are extensive research ef…
In this work, we report a gas-phase polymerization approach to create end-grafted vinyl based polymer films on silicon oxide based substrates. The "surface-initiated vapor deposition polymerization" (SI-VDP) of vaporized vinyl monomers, via the nitroxide-mediated free radical polymerization mechanism, was developed to…
Abstract Summary: Thermosensitive polymer nanotubes can be fabricated within an aminopropylsilane‐modified porous anodic aluminum oxide membrane by surface‐initiated atom transfer radical polymerization (ATRP) followed by template removal. DSC experiments prove that the synthesized PNIPAM‐ co ‐MBAA copolymer nanotubes…
We present a complete set of overlapping pressure-volume-temperature and dielectric relaxation data of the glass forming liquids propylene carbonate, meta-fluoroaniline, and glycerol under pressure up to 700 MPa. In all the samples a glass transition is induced by pressure at constant temperature. We compare the spect…
A series of dendritic phenylazomethines (DPA), which have a meso-substituted zinc porphyrin core (DPAGX-ZnP, X = 1-4), were synthesized. Structural studies of these dendrimers were carried out using Tri-SEC (triple detection after size exclusion chromatography), intrinsic viscosity analysis, TEM (tunneling electron mi…