Materials Literature
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Due to increasing risk associated with the contamination of the environment with heavy metals and radionuclides, societies worldwide are facing a pressing need for new more efficient environmental remediation techniques.One approach that gained considerable attention over the last two decades is in situ metal stabiliz…
Boron Nitride (BN) is widely used in thermal management applications involving thermoplastic polymeric articles.BN platelet agglomerates give higher through-plane thermal conductivity and more isotropic thermal conduction than single crystal powder grades.However, the agglomerates are relatively weak and susceptible t…
Previous work by our group showed the poly (chlorotrifluoroethylene) can be functionalized by one electron reduction followed by radical trapping.Several new methods for such reduction were examined including Cu / phenanthroline in dimethyl sulfoxide (DMSO), NaS 2 O 4 , in DMSO, Zn/Pd in tetrahydrofuran (THF), chloro…
Despite widespread discussion, the role of van der Waals dispersion forces in wetting remains unclear. Here we show that non-local correlations contribute substantially to the water-metal bond and that this is an important factor in governing the relative stabilities of wetting layers and 3D bulk ice. Due to the great…
Baja tahan karat menunjukkan kepekaan terhadap serangan korosi batas butir dan sumuran dalam lingkungan asam. Serangkaian penelitian dilakukan untuk mempelajari sifat korosi dari baja tahan karat AISI tipe 304 dalam larutan asam klorida (HCl) 35% selama 2 jam dengan kondisi potensial korosi bebas, setelah terlebih dah…
Recording the procedures to be followed in a standard is one thing; ensuring that they are complied with at all times is another, and it’s at least as important. Standardization and compliance are inextricably linked, and a standard that contains no provisions for compliance will have no effect at all. We have all see…
The general term free radical represents a molecule or atom having an unpaired electron, and reactive free radicals are those in which the electron is readily available to react with other molecules.Oxygen-derivedfreeradicalsthathavedrawntheinitialattentioninbiologyaresuperoxide (O2 i−), hydroxyl (•OH), peroxyl (ROO•)…
Doktorska disertacija prezentuje nov i opštiji način analiziranja semantike strukturiranih i objektno orijentisanih programa i to isključivo u okvirima predikatske logike prvog reda. Doktorska disertacija razmatra sledeće teme: 1.) S-programski račun, 2.) Definicija i osobine dinamičkih postuslova u S-računu, 3.) Konc…
A Stable and Easily Sintering SrCeO3-Based Proton Conductor by a Polymerizable Complex Method Authors: Jingchao Zhanga; Zhaoyin Wena; Jinduo Hana; Yu Liua; Xiangwei Wua; Jun Jina; Yanming Cuia Abstract Proton conducting Sr(Ce0.6Zr0.4)0.95Yb0.05O3-δ was synthesized by a polymerizable complex method. XRD, SEM and EPMA r…
The absorption, excitation, and ultrabroadband near-infrared luminescence spectra of Bismuth were investigated in H2-annealed and γ-irradiated Bi:α-BaB2O4(α-BBO) single crystals, respectively. Energy-level diagrams of the near-infrared luminescent centers were fixed. The electronic transition energies of near-infrared…
Glassy amorphous and semi-crystalline polymers exhibit strong rate, temperature, and pressure dependent polymeric yield. As a rule of thumb, in uniaxial compression experiments the yield stress increases with the loading rate and applied pressure, and decreases as the temperature increases. Moreover, by varying the lo…
We study resistivity temperature dependence of a three dimensional metamagnet near the metamagnet phase transition point in the case when magnetic structure tends to split into regions with high and low magnetization. We show that in the case of weak pinning the spin relaxation time of domain wall is much larger than…
(Base de datos de tesis doctorales TESEO) En este trabajo de tesis doctoral se desarrollan basicamente dos aspectos. El primero, es la sintesis de receptores bis-porfirinicos metalados con zinc, tanto aciclicos como ciclicos, y con diferente grado de saturacion de las cadenas carbonadas, y el segundo, trata sobre los…
Este trabalho objetivou a sintese de copolimeros contendo grupos ionicos. Foram utilizadas diferentes rotas sinteticas para a obtencao de copolimeros de estireno (S) e acido vinilfosfonico (AVF) (P(S-co-AVF)): 1. Copolimerizacao radicalar destes monomeros; 2. Copolimerizacao de estireno e vinilfosfonato de dimetila (V…
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digita…
Heteropolyacids (HPAs) have been used as catalysts for the reaction of salicylic acid with acetic anhydride. The performance of different forms of heteropoly acids in the presence of acetic anhydride as acetylating agent for acetylation of salicylic acid was compared. The best conditions were observed using Preyssler…
Alkylation of benzene with 1-decene was investigated for the production of linear alkylbenzene (LAB), using silica supported and bulk preyssler and keggin type heteropoly acids. Silica supported H14[NaP5W30O110] and H3PW12O40 catalysts with 40% loading were calcinated at 240 and 300°C, respectively. It is found that t…
\n O presente trabalho teve por objetivo avaliar a atividade celulolítica de fungos isolados de bagaço de cana-de-açúcar e serapilheira, atuantes sobre bagaço de cana-de-açúcar e farelo de arroz como substratos. Dez isolados fúngicos de amostras de bagaço de cana-de-açúcar e material vegetal em decomposição foram aval…
By example of a Permalloy particle (40 × 40 μm(2) size, 30 nm thickness) we demonstrate a procedure to quantitatively investigate the dynamics of magnetic stray fields during ultrafast magnetization reversal. The measurements have been performed in a time-resolving photoemission electron microscope using the X-ray mag…
In dieser Arbeit wurde die alte Designvariante des Fabry-Pérot-Filters (FPI4) hinsichtlich Performance und Ausbeute untersucht. Zielstellung war eine Optimierung, welche die Probleme wie Sticking, Kurzschluss zwischen Schirm und Elektrode sowie Defekte bei den Vereinzelungsverfahren beseitigen sollten. Ferner wurden e…