Materials Literature
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Abstract Recrystallization of manganese( II ) formate dihydrate from formic acid under solvothermal conditions results in single crystals of anhydrous manganese( II ) formate Mn(O 2 CH) 2 , and the structure of this phase has been determined by X‐ray diffraction. The same product can be obtained by solid‐state dehydra…
10mol% Gd 2 O 3 ‐doped CeO 2 solid solutions (20GDC) have been synthesized via carbonate coprecipitation using ammonium bicarbonate (AHC) and urea as the precipitants. The precursors and the resultant oxide powders were characterized via chemical analysis, X‐ray diffractometry (XRD), Brunauer–Emmett–Teller (BET) analy…
Carbon nanotubes (CNTs), a new crystalline form in the carbon family, have been shown to be an effective adsorbent for Cu 2+ ion removal from aqueous solution. After oxidation with nitric acid, the adsorption capacity of the oxidized CNTs towards Cu 2+ ions at a pH of 5.2 reached 27.6 mg/g, compared to a value of only…
CsLnCdSe(3) (Ln = Ce, Pr, Sm, Gd, Tb, Dy, Y) and CsLnHgSe(3) (Ln = La, Ce, Pr, Nd, Sm, Gd, Y) have been synthesized at 1123 K. These isostructural materials crystallize in the layered KZrCuS(3) structure type in the orthorhombic space group Cmcm and are group X extensions of the previously characterized Zn compounds.…
Herein, we present a methodology that allows for the temporal control of fibrillization of amyloidogenic peptides. This general approach implements a photolabile linker that connects the amyloidogenic peptide to a fibril-inhibitory unit, in this case, a pentamer of amino acids modified with the solubilizing N,N-dimeth…
Abstract Literature data as well as our own experimental results devoted to the complexation of polycarboxylic acids with various water‐soluble polysaccharides (methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, hydroxypropylmethylcellulose, starch, and dextran) by means of hydrogen bonding are systematiz…
A series of gold nanoparticles stabilized by the adsorption of heterocyclic mercaptan derivatives, including 2-mercaptopyridine (2MPy), 2-mercaptopyrimidine (2MPm) and 4-mercaptopyridine (4MPy), were synthesized and characterized by TEM, FTIR, UV−vis, and XPS. The adsorption of 2MPy molecules led to the most stable an…
A heterologous metabolism of polyhydroxyalkanoate (PHA) biosynthesis and degradation was established in Escherichia coli by introducing the Ralstonia eutropha PHA biosynthesis operon along with the R. eutropha intracellular PHA depolymerase gene. By with this metabolically engineered E. coli, enantiomerically pure (R)…
RATIONALE AND OBJECTIVE: To prepare and characterize new particulate contrast media, small particulate gadolinium oxide (SPGO) and gadolinium oxide albumin microspheres (GOAM), as prototype multimodal imaging and therapeutic agents. METHODS: SPGO was purchased from Alfa Aesar Inc. (Ward Hill, MA). GOAM were synthesize…
X-ray powder diffraction patterns of the AgNbO3 have been obtained in a wide temperature range: from room temperature up to 850 K. The type of distortion and the multiplicity of the pseudo-cubic perovskite cell has been determined from the splitting of the main diffraction lines and from analysis of the superlattice p…
The conditions necessary for synthesizing Al 4 SiC 4 from mixtures of aluminum, silicon, and carbon and kaolin, aluminum, and carbon, as starting materials, were examined in the present study. The standard Gibbs energy of formation for the thermodynamic reaction SiC( s ) + Al 4 C 3 ( s ) = Al 4 SiC 4 ( s ) changed fro…
Competition reactions for the substitution of monochlorotriazines with different amines provide relative reactivity data that can be used to identify new groups for the chemoselective syntheses of dendrimers based on melamine. Target 1 is prepared using a one-pot per generation strategy without protecting group manipu…
Corrosion Reviews
Techniques for controlling spectral width are used in conjunction with thin-film techniques in the design of guided-mode resonance (GMR) filters to provide simultaneous control over line-shape symmetry, sideband levels, and spectral width. Several factors that could limit the minimum spectral width are discussed. We u…
Abstract The absorption, emission, and energy‐transfer properties of monomeric and supramolecular (salen)Zn complexes (square and rectangular assemblies) are reported. The monomeric complexes fluoresce in solution, displaying photophysical behavior similar to typical (porphyrin)zinc complexes. Rhenium coordination che…
The atomistic structure and electrical properties of a symmetrical 5.4° [001] tilt grain boundary in Fe‐doped SrTiO 3 have been investigated, respectively, by means of various transmission electron microscopy (TEM) techniques and impedance spectroscopy. In weak‐beam dark‐field images, the grain boundary is revealed to…
Abstract The procedures for measuring the intensities and for subsequent calculation of the thickness of thermal SiO 2 layers on Si in the range 0.3–8 nm have been evaluated to determine the best measurement protocols. This work is based on earlier work where the measurements for (100) and (111) Si surfaces indicate t…
A dynamic model of liquid water transfer coupled with moisture sorption, condensa tion, and heat transfer in porous textiles is developed by incorporating the physical mechanism of liquid diffusion in porous textiles into a coupled heat and moisture transfer model developed previously. An equation describing liquid di…
Electrostatic interactions with positively charged regions of membrane-associated proteins such as myristoylated alanine-rich C kinase substrate (MARCKS) may have a role in regulating the level of free phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2) in plasma membranes. Both the MARCKS protein and a peptide correspo…
Abstract Polyethylene‐clay hybrids have been prepared successfully by melt compounding with maleic anhydride grafted polyethylene (MA‐g‐PE), organophilic clay and polyethylene. In these polyethylene‐clay hybrids, the silicate layers of the clay were exfoliated and dispersed to the monolayers. The hybrids exhibit highe…