Materials Literature
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We report a novel method for rapid, colorimetric detection of a specific deoxyribonucleic acid (DNA) sequence by carrying out a polymerase chain reaction in the presence of gold nanoparticles functionalized with two primers. Extension of the primers when the target DNA is present as a template during the polymerase ch…
Abstract A composite of di(hydroxo)germaniumporphyrin with silica gel was used as radical generator which oxidized MeOH to HCHO and hydrocarbons to alcohols in aqueous solution.
A new polymeric zinc(II) complex with thiophene-2-carboxylic acid (α-tpc) of composition [Zn2(C20H12O8S4)] n was obtained and structurally characterized by X-ray diffraction, thermal analysis, nuclear magnetic resonance (NMR), and infrared spectroscopies. Upfield shift in the 1H-NMR spectrum is explained by the crysta…
New heterotrinuclear complexes have been obtained from dinuclear Fe(III) oxygen-bridged N,N′-bis(salicylidene)ethylenediamine (salenH2) and bis(salicylidene)-o-phenylenediamine (salophH2) and Co(II), Ni(II), Cu(II) salts. Then, heterotrinuclear vic-dioxime complexes containing caps have been synthesized. The complexes…
In this work, a chloro-bridged trinuclear copper complex {[Cu(bpea)Cl]2CuCl4} (1) (bpea = N,N-bis(2-pyridylmethyl)ethylamine) has been synthesized and structurally characterized. In 1, two mononuclear [Cu(bpea)Cl]+ are linked by one , generating a sandwich-like trinuclear unit. A crystallographic C2 axis passes throug…
This article gives an overview on the molecular and crystal structures of rare earth metal (REM) complexes with a series of aminopolycarboxylic acid (APCA) ligands, nitrilotriacetic acid (NTA), ethylenediamine-N,N,N′,N′-tetraacetic acid (EDTA), diethylenetriamine-N,N,N′,N″,N″-pentaacetic acid (DTPA), and triethylenete…
Reaction of CoX2 · nH2O with either 2-amino-3-methylpyridine (3-MAP) or 2-amino-5-methylpyridine (5-MAP) in aqueous acid gave complexes, (3-MAPH)2CoX4 or (5-MAPH)2CoX4 (H2O) n [n = 0,1; X = Cl, Br; 3-MAPH = 2-amino-3-methylpyridinium, 5-MAPH = 2-amino-5-methylpyridinium]. The 3-MAPH salts are formed in the triclinic c…
Four new solid ternary complexes of lanthanide with 2,6-pyridine dicarboxylic acid and α-picolinic acid [Ln(DPA)(Lα)(H2O)] · 2H2O (Ln = La3+, Ce3+, Eu3+, or Gd3+; DPA = 2,6-pyridine dicarboxylic acid; HLα = α-picolinic acid) have been synthesized and characterized by elemental analysis, molar conductance, FT-IR, UV–Vi…
The Schiff base compound 2-[(4-propylphenylimino)methyl]-4-nitrophenol has been synthesized and characterized by IR, UV–Vis, and X-ray single-crystal determination. The molecular geometry from X-ray determination of the title compound in the ground state has been compared using the Hartree–Fock (HF) and density functi…
We previously observed that an intrinsic staking fault shrunk through a glide of a Shockley partial dislocation terminating its lower end in a hard-sphere crystal under gravity coherently grown in ⟨001⟩ by Monte Carlo simulations [Mori et al., Molec. Phys. 105, 1377 (2007)]; it was an answer to a one-decade long stand…
Most materials in available macroscopic quantities are polycrystalline. Graphene, a recently discovered two-dimensional form of carbon with strong potential for replacing silicon in future electronics, is no exception. There is growing evidence of the polycrystalline nature of graphene samples obtained using various t…
The frequency and temperature dependence of the dielectric constant, electric modulus and electrical conductivity of the transparent glasses in the composition 0.5Li2O-0.5Na2O-2B2O3 (LNBO) were investigated in the 100 Hz - 10 MHz frequency range. The dielectric data have been analyzed using Cole-Cole equation with an…
X-ray powder diffraction (XRD) along with differential thermal analysis (DTA) carried out on the as-quenched samples in the 3BaO-3TiO2-B2O3 system confirmed their amorphous and glassy nature, respectively. The dielectric constants in the 1 kHz-1 MHz frequency range were measured as a function of temperature (323-748 K…
Nanostructures d'alliages métalliques amorphes Zr-Al-Ni-Cu induites par broyage mécanique et faisceaux d'électrons pulsés à haut courant Contrairement aux métaux conventionnels, les verres métalliques amorphes présentent des arrangements atomiques à courte distante. Ce résultat conduit à des propriétés physiques et ch…
Dans un premier volet, une approche expérimentale basée sur des essais macroscopiques et des observations microscopiques (MEB et MO) ont permis de préciser la cause de l’endommagement du polyéthylène haute densité (PEHD) et sa sensibilité à la triaxialité des contraintes. Dans un deuxième volet, afin d’explorer des ga…
La valorisation de certains déchets et sous produits industriels dans le domaine du génie civil, tels les laitiers d’aciérie, joue un rôle privilégié dans le contexte du développement durable. Elle permet de préserver les ressources naturelles, de diminuer la production de gaz à effet de serre, d’éviter des mises en d…
Contrairement aux métaux conventionnels, les verres métalliques amorphes présentent des arrangements atomiques à courte distante. Ce résultat conduit à des propriétés physiques et chimiques fondamentalement différentes de leurs homologues cristallins. Cette étude porte sur la caractérisation et la compréhension de la…
O presente trabalho teve como objetivo compreender o comportamento de polpas celulósicas ao longo das etapas do processo produtivo, obtidas através de diferentes condições de cozimento kraft industrial Lo-Solids® de madeira de eucalipto. Foram estudadas amostras de polpas produzidas com três números kappa de saída do…
Historicamente a indústria de celulose e papel tem sido considerada uma das maiores consumidoras de recursos naturais. O volume de água consumido pelo setor alcança em média valores de 25 a 100 m3 por tonelada de polpa celulósica produzida. Dentre os estágios que compõem o processo kraft, a planta de branqueamento con…
This paper examines the process of ideologization of Adam Smith’s thought. In The Wealth of Nations (1776), Smith embraced free enterpriseas the foundational principle of nascent capitalism. The concept of the invisible hand –a metaphysical idea– helped give cohesion to anewborn science that offered a more dynamic and…