Materials Literature
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Ferraioloite, MgMn2+4(Fe2+0.5Al3+0.5)4Zn4(PO4)8(OH)4(H2O)20, is a new secondary phosphate mineral from the Foote Lithium Company mine, Kings Mountain district, Cleveland County, North Carolina, USA. The mineral was found in tiny vughs within a thin seam of very fine-grained, sugary pegmatite with vivianite, fairfieldi…
The influence of a chill on the mechanical properties and microstructural features in grey cast iron has been studied. Some of the main findings were that the chill refined the microstructure and modified the graphite distribution from A to D/E. Eutectic cell size was reduced by 60–70%. The Brinell hardness increased…
Con fines de uso como sustituto parcial del cemento se estudió la arcilla caolinítica de baja pureza del afloramiento La Delta (Moa, Holguín). Se utilizaron técnicas de espectrometría de absorción atómica, difracción de rayos X, análisis termogravimétrico y espectroscopía de infrarrojo para caracterizar las arcillas.…
The use of synchrotron radiation (SR) at the National Laboratories of Frascati (LNF) goes back in time. As early as the 1960s, a group of physicists and engineers under the leadership of B. Touschek [1 C. Bernardini, Il Nuovo Saggiatore 27, 6 (1986). [Google Scholar]] was involved in the pioneering work on the first s…
Fundamental understanding of self-organization and integration of biomaterials on semiconductors is essential to the development of biological electronic devices. While formation of supramolecular structures by hydrogen bonding and/or electrostatic forces appears common on metal surfaces, the availability of dangling…
Compact optical systems generally form the backbone of integrated optoelectronic microsystems. Miniaturization as well as integration requirements result in system configurations with folded optical axis such as in planar integrated freespace optics. For optimum performance in such systems geometries, the surface prof…
Abstract A universal framework for describing the temperature enhanced negative bias temperature instability (NBTI) is developed in this paper. Analytical time evolution models of the NBTI mechanisms, as Pb center generation and hole-transport in the oxygen vacancies, are proposed based on careful investigation of ato…
Conventional and phototransferred thermoluminescence of crystalline synthetic quartz implanted with 70 keV Ar ions at fluences in the range 1 × 1014–5 × 1015 ions/cm2 is reported. The glow curves, recorded at 5°C/s from beta-irradiated samples of similar mass, show a prominent peak between 100°C and 120°C. The thermol…
The gamma-irradiated single crystals of 2-Bromo-4′-methoxyaceto-phenone (2B4MA) were investigated using electron paramagnetic resonance (EPR) technique. Density-functional theory calculations were employed to investigate and identify the radicals that have been assumed to be formed upon irradiation of 2B4MA single cry…
The polarized infrared spectra of hydrogen-containing xenotime (YPO4) were measured to obtain information on its OH defects. Sample syntheses were conducted at 1.0 GPa using a piston-cylinder apparatus under water-saturated conditions. By lowering the temperature at a rate of 10°C/h from 1200 to 800 °C, xenotime singl…
Kayrobertsonite, MnAl 2 (PO 4 ) 2 (OH) 2 ·6H 2 O, is a new secondary phosphate mineral from the Hagendorf Sud pegmatite, Hagendorf, Oberpfalz, Bavaria, Germany and the Foote Lithium Company mine, Kings Mountain district, Cleveland County, North Carolina, USA. Kayrobertsonite crystals occur as intergrown masses of snow…
An encapsulated grating with a metal slab is designed as a reflection three-port beam splitter at the wavelength of 1550 nm under normal incidence. Such a new grating is aimed to separate energies into the ±1st and the 0th orders for both TE and TM polarizations. The grating parameters such as grating period, duty cyc…
The influence of buffer composition on the conformational stability of native and calciumdepleted Bacillus licheniformis α-amylase (BLA) was investigated against guanidine hydrochloride (GdnHCl) denaturation using circular dichroism, fluorescence and UV-difference spectroscopy. Differential effect of buffer compositio…
In many biological processes highly charged biopolymers are adsorbed onto oppositely charged surfaces of macroions and membranes. They form strongly correlated structures close to the surface which cannot be explained by the conventional Poisson-Boltzmann theory. In this work strong coupling theory is used to study th…
Objective: The aim is to describe the role and function of polymer or peptide mediated drug delivery system considerations in Nano-formulations. Background: The Polymers are the basic frameworks of any formulation, more importantly in case of Sustained/controlled release or Nano-particulate forms. The most commonly us…
In this study, the water-soluble magnetic-multi-walled carbon nanotubes nanocomposites were fabricated via a facile and efficient approach and were characterized by X-ray diffraction, energy-dispersive X-ray, and transmission electron microscopy in detail. The nanocomposites could be employed as an effective adsorbent…
To enhance the Jcof YBa2Cu3O7-X(YBCO) films both in self-field and under magnetic field, an effective strategy is to introduce artificial pinning centers and keep a good YBCO matrix at the same time. Here, we propose a new dopant: LaAlO3(LAO), based on its chemical stability and small mismatch toward YBCO. A series of…
Abstract Polarization switching in graphene oxides (GOs) and poly(vinylidene fluoride) (PVDF)–GO nanocomposite is investigated by piezoelectric force microscopy (PFM). The dynamical switching results reveal that GO films exhibit ferroelectric and piezoelectric properties with two-dimensional characteristics. Abnormal…
Structural, textural and catalytic activity of CoO–Mn 2 O 3 system as being influenced by La 2 O 3 -doping (0.75–3 mol%) and calcination temperatures (300–500 °C) were investigated. The techniques employed were XRD, N 2 -adsorption–desoprtion at −196 °C, EDX and catalysis of H 2 O 2 -decomposition in aqueous solution…
Background: Various drug delivery systems of antitumor drugs have been developed for past several decades. Nanomedicines, being one of promising choices, have been attracting much attention for the purpose of improving clinical use; because, they sometimes exhibit superior potentiality of enhanced efficacy and reducti…