Materials Literature
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Silicon nanocrystals embedded in silicon oxide that show room temperature photoluminescence (PL) have great potential in silicon light emission applications. Nanocrystalline silicon particle formation by laser irradiation has the unique advantage of spatially controlled heating, which is compatible with modern silicon…
Enterographa confusa is described as new to science from Cuba. It is characterized by a lichenicolous habit, punctiform ascomata immersed in the host thallus, (6–)8-spored asci and 3-septate ascospores of 17–23 × (2.5–)3 µm with a distinct gelatinous sheath of 1.5(–2) µm. The new species was discovered by chance in th…
The paper presents results of a two-stage study on the tribocorrosive wear of ADI alloy cast iron containing Ni and Cu.In the first stage of the wear tests with use test rig type pin-on-plate, there were determined the parameters of the process of tribocorrosion of the ADI cast iron in 3.5% NaCl solution.In the second…
In this paper, a simple and effective method for gold recovery is described. The paper describes a way to recover gold onto activated carbon from a synthetic solution of gold(III) chloride. The method can also be used on nickel(II) as well as copper(II) chloride of where the metal ion ratios are comparable to the meta…
Chitosan/cellulose-based beads (CCBs) for the affinity purification of histidine-tagged proteins were prepared from chitosan/cellulose dissolved in ionic liquid as a solvent, and their structures were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy, and thermogravimetric anal…
Compared with other field-emission nanomaterials, 1D ZnO nanomaterials have some unique properties—such as high melting point, high thermal and chemical stability, and ambient insensitivity—which means they have promising potential applications as field emitters in harsh environments. This work proposed a water-assist…
Semiorganic 4-dimethylaminopyridine potassium chloride 2-aminopyridine (4-DMAPK2AP) crystal has been grown successfully by using slowevaporation solution growth technique. Powder x-ray diffraction shows the 4-DMAPK2AP crystal has good crystalline nature. Single crystal XRD shows that thegrown 4-DMAPK2AP is cubic cryst…
In a martensitic-bainitic microalloyed steel, the effect of hydrogen on fatigue crack growth was studied using rotary bending fatigue tests.The steel was subjected to a rapid thermal cycle to get a microstructure similar to that which would be formed within the coarse-grained heat-affected zone of a weld.Crack growth…
Mizuhopecten yessoensis, one of the most highly favored scallops on the international market, has suffered from massive summer mortalities. Water temperature is an important environmental stressor which has significant effects on the physiological and biochemical response of scallops. Heat shock protein 90 (HSP90) pla…
The concept of ferrovalley materials has been proposed very recently. The existence of spontaneous valley polarization, resulting from ferromagnetism, in such hexagonal 2D materials makes nonvolatile valleytronic applications realizable. Here, we introduce a new member of ferrovalley family with orthorhombic lattice,…
DOUBLE-LAYERED ALUMINIUM TUBESThis work deals with the tube sinking process.The main purpose is to develop a process chain for the manufacturing of ultra-thick-walled tubes with the lowest possible diameter.The base material is a hot extruded tube consisting the aluminium alloy AA6063 with the dimensions 9,9 ×1 mm.The…
This paper presents the results of experimental studies of the deformed state distribution evolution of carbon fiber reinforced plastic surface layers under tension. Structural spatial deformation elements evolve as the total deformation increases. The size of the samples of carbon fiber is 250 × 12 × 1.5 mm. The matr…
The search for novel manganese(II) compounds having interesting magnetic properties, using 1-(pyridin-2-yl)-2-(pyridin-2-ylmethylidene)hydrazine (HL) as a tridendate ligand, led to the preparation of the title mononuclear material, [MnCl(NO3)(C11H10N4)(H2O)], and the determination of its structure by XRD. The asymmetr…
Очерчен круг проблем, не позволяющих в полной мере реализовать огромный потенциал применения фосфида индия и арсенида галлия в твердотельной электронике. Проанализированы и обобщены классические и современные результаты по термическому оксидированию полупроводников AIIIBV, в том числе со стимуляцией процесса обработко…
Abstract The photophysical properties of lanthanide(III) complexes depend on the magnitude of orbital mixing between the lanthanide(III) and ligands. Herein, an estimation method of orbital mixing in lanthanide(III) complexes is reported using LnCl 3 ⋅ n H 2 O (Ln=Pr, Gd, Tb) and Ln(tfa) 3 (H 2 O) 2 (tfa: trifluoroace…
Komposit serat alam adalah salah satu komposit ramah lingkungan. Serat alami seperti rami, pisang, rosella, rami dan kenaf mampu menjadi bahan penguat yang baik untuk komposit termoset atau termoplast. Komposit yang menggunakan penguat serat alami dapat ditingkatkan dengan menambahkan waktu pressing dalam proses pembe…
This paper presents the results of analysis of commercial CuSn6 alloy in form of strips at semi-hard state, plastically deformed in the process of repetitive corrugation. The influence of process parameters on the value of residual stresses and texture of examined material was investigated. As a result of residual str…
The purpose of this study was to produce composite thin films with polyvinylpyrrolidone (PVP) matrix with nanoparticles of silicon dioxide (SiO 2 ) as the reinforcing phase (5 and 10%) using spin coating method and to investigate the influence of mass concentration of silica particles and process parameters on the mor…
Evolution of carbide phase in surface layers of volume (passed gross tonnage 500 and 100 million tons) and differentially hardened rails (passed tonnage – 691.8 million tons) to a depth of 10 mm along the central axis and along the rail head fillet was studied by means of transmission electron diffraction microscopy.…
Nanopowders (NP) based on cobalt have significant prospects for use in various fields of science, engineering, industry and medicine. In this work the authors have studied the kinetics of the production of metallic cobalt nanopowder by hydrogen reduction of oxide material Co 3 O 4 in an electromagnetic field, an d wit…