Materials Literature
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The present study aims to carry out an inventory of Chlorococcales and Ulothricales of colonial habit in four artifi cial lakes of areas of leisure of Goiânia, and to discover some ecological aspects. Fifty taxa of coccoid Chlorophyceae were found being 46 of Chlorococcales and four of Ulothricales. The most frequent…
The spectroscopy, electrochemistry and electrogenerated chemiluminescence (ECL) of five osmium(ii) polypyridyl systems containing either phosphine or arsine chelating ligands are reported. ECL is generated in acetonitrile and mixed CH(3)CN-H(2)O (50 : 50 v/v) solutions with tri-n-propylamine (TPrA) as an oxidative-red…
Abstract To study microstructure of Na2O–B2O3–SiO2–Al2O3 glass, which is a starting material for preparing porous glass, 11B one-dimensional (1D) magic-angle spinning (MAS) spectra and results of two-dimensional (2D) 11B–11B homonuclear correlation experiment under MAS are examined at 21.8 T. We conclude that two of t…
We describe a modified bifunctional analogue of polyacrylamide that spontaneously forms self-assembled polymeric thin films on Au surfaces. The film is engineered to specifically bind histidine tagged proteins (6His), while simultaneously remaining inherently resistant to the non-specific adsorption of proteins in sol…
The cationic luminescence probe, tris(2,2′-bipyridyl)ruthenium(II) complex ([Ru(bpy)3]2+), was incorporated into laponite-modified glassy carbon electrode (GCE) via two strategies, namely, the adsorption and intercalation methods. These two incorporation methods resulted in different microenvironment for the immobiliz…
Coal-fired diesel engines utilizing coal-water slurries have been intensively investigated by previous researchers. Specialized coal-water slurries injection equipment was developed to handle the slurries, and hard materials were used to handle the abrasion due to coal ash. Charcoal-based water slurries are shown to r…
The corrosion inhibition and adsorption characteristics of (+/‐)‐9‐fluoro‐2,3‐dihydro‐3‐methyl‐10‐(4‐methyl‐1‐piperazinyl)‐7‐oxo‐7H‐pyrido[1,2,3‐de]‐1,4‐benzoxazine‐6‐carboxylic acid (Tarivid) on the corrosion of mild steel has been studied using thermometric and gasometric methods. The study reveals that tarivid inhi…
Abstract A novel coordination polymer of zinc(II) biphenyldicarboxylate bearing a sulfone group, [Zn(sbdc)(H2O)3]·(H2sbdc)·H2O (H2sbdc: sulfone biphenyldicarboxylic acid), has been synthesized. It is composed of a one-dimensional chain structure of alternating Zn(II) cations and sbdc anions. This coordination polymer…
Copper nanoparticles and nanorods were prepared in the one-dimensional channels of SBA-15 supported by a modified supercritical fluid deposition (SCFD) method. In this approach, cheap and widely available copper nitrate, which is insoluble in supercritical CO2 (scCO2), was used as the copper source and ethanol as the…
Abstract The present review summarizes the prominent properties, in particular, the unique optical properties, generated by 9,9-diarylfluorene moiety introduced into polymer main chains in addition to the synthesis of polymers containing diarylfluorene moieties on the basis of results of the studies reported mainly in…
Strain YSM-123(T) was isolated from commercial salt made from Japanese seawater in Niigata prefecture. Optimal NaCl and Mg(2+) concentrations for growth were 4.0-4.5 M and 5 mM, respectively. The isolate was a mesophilic and slightly alkaliphilic haloarchaeon, whose optimal growth temperature and pH were 37 °C and pH…
Abstract Carbonate ions in the aqueous electrolyte solution improved both the photocurrent and the stability of a porous BiVO4 semiconductor electrode used for water splitting under visible light up to 520 nm. The photocurrents in AHCO3 (A = Na and K) solutions at 1.23 V were approximately six times higher than that i…
The arsenic resistance gene cluster of Microbacterium sp. A33 contains a novel pair of genes (arsTX) encoding a thioredoxin system that are cotranscribed with an unusual arsRC2 fusion gene, ACR3, and arsC1 in an operon divergent from arsC3. The whole ars gene cluster is required to complement an Escherichia coli ars m…
Phosphorylation of the activation loop is one of the most common mechanisms for regulating protein kinase activity. The catalytic subunit of cAMP-dependent protein kinase autophosphorylates Thr(197) in the activation loop when expressed in Escherichia coli. Although mutation of Arg(194) to Ala prevents autophosphoryla…
Plastid-specific ribosomal proteins (PSRPs) have been proposed to play roles in the light-dependent regulation of chloroplast translation. Here we demonstrate that PSRP1 is not a bona fide ribosomal protein, but rather a functional homologue of the Escherichia coli cold-shock protein pY. Three-dimensional Cryo-electro…
In this study the sol–gel synthetic strategy was used to prepare organic–inorganic hybrid electrolyte systems composed of a di-urea cross-linked poly(ethylene oxide) (PEO)/siloxane (di-ureasil) matrix with a wide concentration range of lithium tetrafluoroborate (LiBF4). The assembly and preliminary characterization of…
By considering an interfacial layer between the electrode and the $BiFeO_{3}$($BFO$) layer, the polarization and the hysteresis behavior of $BFO$ film are simulated. It is found that the non-ferroelectric interface will increase the coercive field, and remarkably suppress the polarization of the ultrathin film under l…
Thin films of Fe3O4 have been deposited on single crystal MgO (100) and Si (100) substrates using pulsed laser deposition. Films grown on MgO substrate are epitaxial with c-axis orientation whereas, films on Si substrate are highly <111> oriented. Film thicknesses are 150 nm. These films have been irradiated with 200…
Les aciers de structures sont sujets aux phénomène de vieillissement sous déformation qui se traduit, par exemple, par des modifications de la limite d'élasticité, une augmentation du durcissement et une diminution de la ductilité. Le vieillissement statique est associé aux pics et aux paliers de Lüders, tandis que le…
Plusieurs substrats issus de la chimie organique, inorganique et organométallique ont été synthétisés et fonctionnalisés avec différents groupes chimiques, notamment des polyethylene glycol qui leur permet d’améliorer leur solubilité dans l’eau et de les rendre biocompatible pour une éventuelle application dans le mil…