Materials Literature
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MnO‐added Bi 0.485 Na 0.425 K 0.06 Ba 0.03 TiO 3 solid solution around the morphotropic phase boundary is produced by the solid oxide reaction process. All the specimens maintain a coexistence of rhombohedral and tetragonal phases, while the suitable addition of MnO apparently promoted grain growth. Besides, the suita…
The thermal stability of nanostructured Ce(0.5)Zr(0.5)O(2) powders prepared by the Pechini method was studied on the nanometric scale by X-ray diffraction (XRD), energy-dispersive spectrometry (EDS), transmission electron microscopy (TEM), nuclear magnetic resonance (NMR), and Raman techniques. Obtained results demons…
The behavior of particles that are reflected in a turbo molecular pump is investigated by measuring particle trajectories and the number of particles that fall on a wafer in a plasma etching apparatus. Some scattered particles collide with the wafer at high velocity, which damage fine patterns of the photoresist on th…
Purpose The purpose of this paper is to evaluate the effect of different amounts of sodium hydroxide (NaOH) introduced during the resin synthesis on the properties of bark‐phenol‐formaldehyde (BPF) adhesives aims at achieving a balance between storage life and other properties of BPF adhesives. Design/methodology/appr…
Spatiotemporal correlations in start-up flows of attractive colloids are explored by numerical simulations as a function of their volume fraction and shear rate. The suspension is first allowed to flocculate during a time tw, then the stress necessary to induce its flow is computed. We find that, at low volume fractio…
Calcium phosphate (CaP) nanoparticles with particle sizes <100 nm were prepared and conjugated with lauric acid. This was achieved by first activating the phosphate group of CaP and conjugating it with lauric acid via acid chloride route incorporating chitosan as a spacer. Insulin was loaded and the nanoparticles were…
We investigate the influence of transition-metal doping on silicon nanocrystals by means of first-principles calculations within a supercell approach. We focus on the energetic stability of different doping sites and on electronic and magnetic properties of the most stable configurations. Remarkable differences concer…
Abstract Polycarbonate–titania hybrids have been synthesized by a sol–gel reaction, starting from poly(trimethylene carbonate) (PTMC) and titanium isoproproxide in different ratios. PTMC with a given chain length was obtained by ring opening polymerization. FT‐IR spectra reveal the presence of TiOC covalent bonds be…
This letter introduces new algorithms for passivity verification and compensation of macromodels constructed from delayed rational functions in the scattering domain. For passivity verification, a frequency-dependent generalized eigenvalue is formulated, which is used to accurately determine the regions of passivity v…
The peak current amplitude and front duration of lightning stroke current waveforms have conventionally been evaluated independently, and severe waveform assumptions are usually adopted in the current of lightning insulation designs. If lightning stroke waveform conditions are optimized, lightning insulation specifica…
The effect of various metal-oxide nanoparticles embedded in the alignment layer of a liquid crystal (LC) display is experimentally investigated. The study mainly focuses on the electro-optical properties of a twisted-nematic LC display. It is confirmed that a certain type of nanoparticles contribute to the enhancement…
Biochemical and histological evaluations of the effects of the iron chelator desferrioxamine on the nephrotoxicity induced by cisplatin in normal rats were carried out. A single dose of cisplatin (7.5 mg/kg, intravenously) caused nephrotoxicity that manifested biochemically as an elevation of blood urea nitrogen, seru…
In vitro and in vivo antibacterial activities on the Staphylococcus aureus and Escherichia coli of the amorphous cefuroxime axetil (CFA) ultrafine particles prepared by HGAP method were investigated in this paper. The conventional sprayed CFA particles were studied as the control group. XRD, SEM, BET tests were perfor…
The influence of cooling process on microstructure of high-strain pipeline steel X80 with its low yield ratio has been examined by SEM and in situ TEM. The results illustrate that ferrite+bainite dual phase structure is obtained after proper relaxation and chilling down process, while the terminate temperature of rela…
Complexity conquered: Zeolite structures of unprecedented complexity have been determined using the new methods of charge flipping and histogram matching applied to X-ray powder diffraction data combined with data from electron microscopy. ITQ-37 (see picture) has a chiral structure of exceptionally low density and la…
Atomic force microscopy was used to study the adsorption of the surfactant octadecyl trimethyl ammonium chloride (C18TAC) at a low concentration (0.03 mM) to negatively charged surfaces in water. Atomic force microscopy tips were functionalized with dimethyloctadecyl(3-tripropyl)ammonium chloride (C18TAC-si) or N-trim…
Mechanisms of the fast optical nonlinearity are studied in two types of cells based on lyotropic ionic liquid crystals (LILC) of metal alkanoates. They are (I) bi-layer cell, which consists of a thin dye film covered by LILC, and (II) LILC with electrochromic impurity (viologen). Applying dc electric voltage to the ce…
We present a method of optoelectronic logic that relies on the digital optical switch. The logic gate is reconfigurable to implement the Boolean operators and, or, and not. Multiple logic gates can be cascaded on a single optoelectronic integrated chip to achieve complex logical functionality. The optoelectronic logic…
Thermal treatment of mineral ores such as ilmenite can initiate phase transformations that could affect their activation or deactivation, subsequently influencing their ability to dissolve in a leaching agent. Most laboratory-based X-ray diffraction (XRD) studies were carried out ex situ in which realistic diffraction…
Purpose The purpose of this paper is to review the design and fabrication of a micro‐accelerometer to be used to measure the heart wall motion of patients who have just undergone coronary artery bypass graft (CABG) surgery. The sensor will provide a means of early warning for the medical staff of associated complicati…