Materials Literature
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The determination of the quality of an imaging system is not an easy task for, in general, at least three parameters, strictly interdependent, concur in defining it: resolution, contrast, and signal-to-noise ratio. The definition of resolution itself in scanning microscopy is elusive and the case of scanning ion micro…
Abstract Physical blends and thermoplastic vulcanizates (TPVs) based on EPDM and PP were prepared in a batch mixer. Dynamic vulcanization of TPVs using resol/SnCl 2 was studied as a function of time. Static and dynamic vulcanization of EPDM in the absence of PP were also studied. Crosslinking of EPDM in the absence of…
Nine Navicula species observed in European rivers and lakes are discussed using light and scanning electron microscopy. Four of them are described as new species: Navicula antverpiensis Van de Vijver & Lange-Bertalot sp. nov., N. wendlingii Lange-Bertalot, Hofmann & Van de Vijver sp. nov., N. lacuum Lange-Bertalot, Ho…
New red emitting phosphors, Ca3(VO4)2:Eu3+,Bi3+, Ca3((P,V)O4)2:Eu3+ were synthesized by low temperature solid-state reaction and characterized by X-ray diffraction, scanning electron microscopy, photoluminescence spectra and Fourier transform infrared spectroscopy. The results show that the red emission located at abo…
High altitude springs and headwater streams directly interact with atmospheric deposition and as a result may be useful first response bioindicators of changes in acid precipitation, i.e. from increased acid rain or mitigation efforts. We examined the diatom assemblages associated with bryophytes collected from high e…
Abstract A complex between a monoclonal antibody for porphyrin and zinc–porphyrin was utilized to construct an energy conversion system. Monoclonal antibody 2B6 bound meso-tetrakis(4-carboxyphenyl)porphyrin zinc complex (ZnTCPP) with a dissociation constant of 2.1 × 10−8 M. Upon binding the antibody, the lifetime of t…
Abstract The three‐dimensional structures in aqueous solution of the entire series of the Ln 3+ complexes [Ln(DOTP*‐Et)] − (formed from the free ligand P , P′ , P″ , P′′′ ‐[1,4,7,10‐tetraazacyclododecane‐1,4,7,10‐tetrayltetrakis(methylene)]tetrakis[ P ‐ethylphosphinic acid] (H 4 DOTP*‐Et) were studied by NMR technique…
Results of a first-principles simulation of the σ phase of the Fe-Cr system performed using a WIEN2k program code in the generalized-gradient approximation for the exchange-correlation potential are given. The work was aimed at the determination of equilibrium states and energies of formation of the ferromagnetic stat…
We propose a new ab initio method designed for the accurate calculation of effective exchange integrals between atoms with numerous open shells. This method applies to ferromagnetic as well as antiferromagnetic exchange, direct or ligand-mediated exchange. Test calculations on high spin transition metal oxides such as…
This study investigates focused electron beam induced etching for the removal of alumina particles on patterned extreme ultra violet (EUV) mask using nitrosyl chloride (NOCl) as assist gas. As potential contaminant, particles of aluminum oxide (alumina, Al2O3) have been successfully removed, leaving the underlying lay…
Abstract Direct excitation europium(III) luminescence spectroscopy is used to study the speciation of aqueous europium(III) ions at micromolar concentrations and near neutral pH. The pH and concentration dependence of the europium(III) 7 F 0 → 5 D 0 excitation peak is consistent with the formation of both mononuclear…
The thermal conductivity κ(T) of crystalline alcohols (methyl, ethyl and 1-propyl) within their thermodynamic equilibrium phases for T⩾2K and under the equilibrium vapor pressures has been measured and analyzed. While such compounds usually exhibit a rich polymorphism including amorphous and partially ordered crystals…
The first generation of a hydrogen isotope separation process called the thermal cycling absorption process (TCAP) has been in service for tritium separation at the Savannah River Site since 1994. To prepare for replacement, a next-generation TCAP process has been developed. This new process simplifies the column desi…
The assembly of various materials by the conventional methods finds its limits in certain specific applications. We approach a study on the solid state diffusion bonding between zircaloy (Zy 4 ) and stainless steel (304L) for an application in the sector of the nuclear power. The diffusion couples prepared underwent t…
As a young, new, and rapidly growing science, the applications of ultrasound in environmental technology hold a promising future. Compared with conventional methods, ultrasonication can bring several benefits such as environmentally friendly (no toxic chemicals are used or produced), low cost, and compact (allowing on…
The ability to tune the wetting behavior of poly(styrene-block-methyl methacrylate) on a polystyrene (PS) brush by insertion of hydroxyl-terminated poly(methyl methacrylate) (PMMA-OH) was demonstrated. The brush properties before and after insertion of PMMA-OH were studied with goniometry, ellipsometry, near edge x-ra…
In the CABRI-FAST experimental program, four in-pile tests were performed with slow-power-ramptype transient-overpower conditions (called hereafter as “slow TOP”) to study transient fuel pin behavior under inadvertent control-rod-withdrawal-type events in liquid-metal-cooled fast breeder reactors. The slow TOP test wi…
Interfaces between austenite and a crossing-twins microstructure consisting of four variants of 2H-martensite are optically observed in a single crystal of Cu–Al–Ni shape memory alloy. It is shown that these non-classical interfaces form during thermally induced transitions from compound twinned 2H-martensite into aus…
In this paper the binding of halides and alkali metal cations with porphyrin hosts is reported. The halide ions are complexed with diprotonated porphyrin macrocycle with high affinity and stable complexes of 1:1 and 1:2 structures with halide ions are formed. Strong (up to 300 times) quenching of the porphyrin fluores…
We perform X-ray absorption fine structure (XAFS) spectroscopy measurements at the sulfur K-edge to elucidate the electronic and geometric bonding of sulfur atoms in borosilicate glass used for the vitrification of high level radioactive liquid waste. The sulfur is incorporated as sulfate, most probably as sodium sulf…