Materials Literature
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Silver plates were exposed to an urban atmosphere for one month to investigate the corrosion products formed in the early stages. After the exposure experiments, the corrosion products on the silver plates were characterized using x-ray techniques, including x-ray diffraction (XRD) and x-ray fluorescence analysis (XRF…
Abstract Shape memory alloys (SMA) are good candidates for being integrated in composite laminates where they can be used as passive dampers, strain sensors, stiffness or shape drivers. In order to improve the SMA modeling and develop the use of these alloys in structural vibration control, better understandings of cy…
A series of poly(vinyl pyrrolidone) (PVP)/fumed silica powder samples were studied using adsorption, FT-IR and AFM methods. Mild treatment (293 K for several hours) of PVP/A-300 powder with an added additional portion of A-300 in a glass reactor (2 dm 3 ) using a mixer (> 500 rpm which provided the powder as a pseu…
The literature on the synthesis and the biological properties of boron-containing chlorins and phthalocyanines is reviewed. A series of homologous derivatives of pyropheophorbide A is described. The compounds contain the B(12)H(11)SH(2-) cluster attached to the single carboxyl group and vary in the length of the alkyl…
Effects of thermal annealing at 400 degrees C on the optical, structural, and chemical properties of TiO2 single-layer, MgF2 single-layer, and TiO2/MgF2 narrow-bandpass filters deposited by conventional electron-beam evaporation (CE) and plasma ion-assisted deposition (PIAD) were investigated. In the case of TiO2 film…
Recent progress has been made in developing a mathematical and probabilistic model for general corrosion of structural steels exposed to sea water immersion corrosion. It is based on corrosion science principles, with early corrosion controlled by oxygen concentration limitations that eventually evolve to anaerobic ba…
The shear‐induced crystallization behavior of isotactic polypropylene (iPP) nanocomposite melt containing modified carbon nanofibers (MCNFs) was investigated by rheo‐SAXS (small‐angle X‐ray scattering) and rheo‐WAXD (wide‐angle X‐ray diffraction) techniques using synchrotron radiation. Under quiescent conditions, the…
We investigated electromagnetic wave propagation through one-dimensional stacks of alternating positive and negative refractive index layers arranged as truncated quasi-periodic (fractal) Cantor multilayers. We considered the occurrence of phase compensation in these structures. In our calculation we utilized the tran…
The charge of dots: A combination of fluorescence correlation spectroscopy and microchip electrophoresis has been used to determine the surface charge of different stabilizer-modified quantum dots (QDs) and to study their transport properties in electric fields (see graph; G(τ)=autocorrelation function). The surface c…
A dedicated spectrophotometer is built to achieve localized transmittance and reflectance measurements. The spatial resolution can be chosen from 100 microm to 2 mm, the spectral resolution from 0.5 to 5 nm, and the spectral range from 400 to 1700 nm. This apparatus can be used to study the index and thickness uniform…
Over the past 30 years, textile manufacturers have been facing heavy competition, and now they urgently need to know consumer perceptions and preferences whereby fabric quality can be controlled and new products can be developed. Sensory factors are the most important parameters in product quality assessment, and tact…
Polyester fibers are hydrophobic in nature; most of the successful preparations such as dyeing, printing, and finishing are based on wet treatments. The plasma treatments for polyester textile surfaces using low-pressure pseudo-discharge in nitrogen as a working gas are discussed in this work. Different plasma paramet…
Potassium (K) exchange isotherms (quantity-intensity technique, Q/I) and K values derived from the Q-I relationship provide information about soil K availability. This investigation was conducted to study the relationships among K Q/I parameters, available K extracted by 1 N NH4AOc (exchangeable K plus solution K), po…
Phase relations in the Ti-C-SiC system are studied with the aim of optimizing Ti 3 SiC 2 synthesis. The optimal starting-mixture compositions for the synthesis of phase-pure Ti 3 SiC 2 powder can be represented by the formula 3Ti + (1 − z )C + (1 + z )SiC, where z = 0.2–0.6. In the temperature range 1630–1670 K under…
Twisted-grain-boundary (TGB) phases shown by some liquid-crystalline materials have properties common to those of both smectic and cholesteric phases. Following analogy between liquid crystals and super conductors proposed by de Gennes [Solid State Commun., 10, 753 (1972)], Renn and Lubensky [Phys. Rev. A, 38, 2132 (1…
Abstract Summary: Germanium and tin phthalocyanines containing peripheral and axial different substituents were synthesized. Thin multi‐layer films of PMMA and PVC containing monomolecular phthalocyanines were obtained by spin‐coating on glass substrates. The phthalocyanines were characterized by their absorption spec…
NMR and dielectric studies have been performed on NaNO 2 loaded in mesoporous matrices of MCM-41 and SBA-15 with pore sizes of 20, 37, and 52 Å. The spin-lattice relaxation rate and 23 Na NMR line shape, as well as the complex impedance, were measured within a broad temperature interval including the ferroelectric pha…
The appearance of a garment is affected by the quality of the fabrics used in its manufacture, as well as a number of factors determined by the technology of the garment manufacturing process. Since fabric quality, as the most important element of garment appearance, is determined by its mechanical properties, it is o…
This article provides an overview of our recent studies on single-walled carbon nanotube-based sensors for measuring mass, strain, pressure, and temperature at the nanoscale. The carbon nanotube in a cantilevered or bridged configuration is simulated by an atomistic modeling, the molecular structural mechanics method.…
3-aminopyridine-2-carboxaldehyde thiosemicarbazone (3-AP) is a highly-hydrophobic small molecule that was originally developed for cancer therapy (Triapine, Vion Pharmaceuticals) due to its ability to inhibit ribonucleotide reductase, a key enzyme required for DNA synthesis. 3-AP has a high affinity for divalent catio…