Materials Literature
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BACKGROUND AND AIM: Nephrogenic systemic fibrosis (NSF) is a highly debilitating disorder primarily affecting the skin, but also other organ compartments. So far, it has only occurred in patients suffering from acute or chronic renal failure, with almost all of them having been exposed to gadolinium-based contrast age…
We bring into consideration a novel, potentially promising scintillating material, Pb-doped SrHfO3. The structural and optical properties of a series of Pb-doped SrHfO3powders prepared by acetate and citrate combustion are investigated and compared to those of undoped and Ce-doped powders with the same composition. Ro…
As diferentes feições da superfície terrestre, expressas pelo relevo, são capazes de provocar variações nos atributos do solo em magnitudes diferenciadas, dependentes, principalmente, de um local específico da paisagem. Sendo assim, o objetivo deste trabalho foi realizar a caracterização mineralógica de Latossolos em…
The second phase and defect formation mechanisms of [Bi 0.5 (Na 1- x K x ) 0.5 ]TiO 3 (BNKT100 x ) ceramics were investigated using electron microscopy, X-ray photoelectron spectroscopy (XPS), and electrical properties measurement. Experimental results indicated that second phase formation induces Bi-rich regions and…
The SiC-<TEX>$ZrB_2$</TEX> composites were fabricated by combining 30, 35, 40, 45 and 50 vol. % of zirconium diboride (<TEX>$ZrB_2$</TEX>) powders with silicon carbide (SiC) matrix. The SiC-<TEX>$ZrB_2$</TEX> composites and the sintered compacts were produced through spark plasma sintering (SPS) under argon atmosphere…
BACKGROUND: Ultrasonically induced cell damage and active oxygen generation with a novel porphyrin derivative DCPH-P-Na(I), were compared in the same in vitro insonation setup. MATERIALS AND METHODS: Sarcoma 180 cells suspended in air-saturated PBS were exposed to ultrasound at 2 MHz for up to 60 s in the presence and…
The susceptibility to localized corrosion of metallic, implant medical devices is typically evaluated in a simulated physiological solution, such as phosphate buffered saline (PBS). For implant devices in contact with blood, the underlying premise is that proteins and other components in blood do not significantly cha…
Abstract To the best of our knowledge, few reports have been concerned with the effect of temperature on photomediated silver nanostructure growth. In this work, the shape evolution from spherical silver nanoparticles to silver nanoprisms and nanostructures in other shapes under the irradiation of a sodium lamp (λ max…
The aim of the study was to evaluate the influence of the chitosan addition on the quality of vacuum packaged pork sausages. A variant of the product was elaborated with 1% (w/w) of chitosan in lactic acid solution at 1% (v/v) and it was compared to a control. Sausages were mechanically stuffed and manually conformed…
It is demonstrated that the temperature dependence of the iron sublattice magnetization in Gd2Fe14B is affected significantly by the Gd–Fe exchange interaction. This is at variance with the common perception that MFe(T) in iron-rich rare-earth intermetallics is determined predominantly by the Fe–Fe exchange. This phen…
A novel deoC gene was identified from Paenibacillus sp. EA001 isolated from soil. The gene had an open reading frame (ORF) of 663 base pairs encoding 220 amino acids with a molecular mass of 24.5 kDa. The amino acid sequence was 79 % identical to that of deoxyribose 5-phosphate aldolase (DERA) from Geobacillus sp. Y41…
Meso-tetrakis(p-sulfonatophenyl)porphyrin (TPPS 4 ) functionalized platinum nanocomposites were synthesized and characterized using ultraviolet-visible absorption spectroscopy (UV-vis), fluorescence spectroscopy (FL), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and X-ray dif…
Capacitance coupling in copper low-k interconnects can be further reduced by implementing Air gaps in the intra-layer dielectric. This paper describes the evaluation of an integrated Air gap technology using 32 and 22 nm node technology vehicles. Electrical, reliability, and yield results are presented.
Quantum dots (QDs) have shown great development potential in noninvasive imaging and monitoring of cancer cells in vivo because of their unique optical properties. However, the key issue of whether or not QDs-labeled cancer cells affect the proliferation, apoptosis and in vivo tumorigenicity ability has not been repor…
Increase of production rate and improvement of quality for RE123 coated conductors have been tried. In-plane texturing of MgO was attempted by the IBAD system with the world largest ion source. As a result of optimizing condition in large deposition area, the dramatically high throughput of 1000 m / h was realized to…
A surface femtosecond two-photon photoemission (2PPE) spectrometer devoted to the study of ultrafast excited electron dynamics and photochemical kinetics on metal and metal oxide surfaces has been constructed. Low energy photoelectrons are measured using a hemispherical electron energy analyzer with an imaging detecto…
Superlattices (SLs) with different periodicity of ferromagnetic La0.7Sr0.3MnO3 (LSMO) and ferroelectric Ba0.7Sr0.3TiO3 as constitutive layers were fabricated on conducting LaNiO3 coated (001) oriented MgO substrates using pulsed laser deposition. The crystallinity, ferroelectric, and magnetic properties of the SLs wer…
We have investigated the effect of hydrostatic pressure (P) on ferromagnetic (FM) phase transition and magnetocaloric properties of (Sm0.8Nd0.2)0.52Sr0.48MnO3 single crystal. At ambient pressure, the system undergoes a first order FM transition associated with large magnetic entropy change (ΔSM). The temperature distr…
In this study, SiO2 nanoparticles were successfully synthesized via sol-gel precipitation method and the effects of different parameters such as temperature, ethanol, ammonia and tetraethylorthosilicate (TEOS) contents based on water were investigated in a systematic way applying Taguchi experimental design method. It…
Epoxy resin is a polar thermosetting polymer that is widely employed in different branches of industry and everyday life, due to their stable physical and chemical properties. Of all the polymer materials currently being used in the electrical insulation industry, epoxy resin is the most widely used kind, together wit…