Adding other metals is an efficient method of breaking through the energy release efficiency limitation of boron-based fuels. A laser ignition testing system was used for investigating the ignition and heterogeneous combustion characteristics of aluminum boride and boron–aluminum blend. The emi...

Iron nanoparticles supported on montmorillonite (MMT-Fe) were synthesized via the reduction by sodium borohydride of iron salts dissolved in a suspension of MMT. The MMT-Fe black powder collected after the evaporation of the solvent was analysed by Transmission Electron Microscopy, which reveale...

Boriding treatment was applied to AISI 1020 steel to improve its wear resistance. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy, Vickers microhardness testing, fracture toughness, and confocal microscopy. The microscale abrasive wear behavior was also in...

Several interesting physical properties which are closely related to the interesting crystal structures of rare earth borides will be reviewed. Experimentally it has been indicated that the B12 icosahedral cluster enhances magnetic interaction and mediates it in dilute magnetic systems. There is...

We report magnetic and magnetothermal properties of iron boride (FeB) nanoparticles prepared by surfactant-assisted ball milling of arc-melted bulk ingots of this binary alloy. Size-dependent magnetic properties were used to identify the transition to the single domain limit and calculate the an...

Pressure is one of the most effective fundamental elements that can change the bonding patterns of materials and lift the reactivity of elements, leading to the synthesis of unconventional compounds with fascinating properties. Using unbiased structure search method based on particle-swarm optim...

FeB and Fe2B hard ceramic phases were produced in Armco iron using gas-boriding in N2–H2–BCl3 atmosphere. This process was carried out at 920 °C (1193 K) for 3 h and caused acceleration in the diffusion of boron into the surface of a base material in comparison with other acceptable methods o...

Pressure is one of the thermodynamic factors that can change the bonding patterns of materials and lift the reactivity of elements, leading to the synthesis of unconventional compounds with fascinating properties. Iron-boride (Fe-B) compounds (e.g., FeB4) are attracting increasing attention due ...

As various branches of industry are interested in good thermoelectric generators, there is a serious demand for an easy, fast, cheap and sustainable production route of excellent thermoelectric materials. In this paper we demonstrate how we could achieve a high-ZT (ZT ∼ 1.45 at 823 K) n-type bu...

In this work the effect of different processing routes on the kinetics of formation of Co4Sb12 phase and Yb filling in the skutterudite cage, as well as thermoelectric behaviour was evaluated.As prepared slowly cooled ingot and rapidly solidified ribbons show the presence of multiple phases, as ...

The aza analogues of carboxylic acids chlorides containing the NSO2CF3 and NSO2CH3 groups instead of oxygen atom were used in the Arndt–Eistert reaction. It was found that N-trifluoromethylsulfonyl-(4-fluorophenyl)-carboximidoyl chloride 1 reacts with diazomethane vigorously even at −70 °C wit...

Publisher SummaryThis chapter provides an overview of 1,4:3,6-dianhydrohexitol compounds. In 1884, 1,4:3,6-dianhydro-D-mannitol was described as the first member of the 1,4:3,6-dianhydrohexitols series. The 1,4:3,6-dianhydrohexitols belong to the so-called “biomass-derived substances” obtainab...

ABSTRACTObjectiveThere is ongoing concern about the impact of electroconvulsive therapy (ECT) on cognition in patients with late-life depression (LLD), especially in patients for whom pretreatment Mini-Mental State Exam (MMSE) scores are low. Our aim was to examine the evolution of cognitive eff...

BackgroundPrior studies suggest that activation of the tryptophan catabolism via the kynurenine pathway by proinflammatory cytokines may be involved in the pathophysiology of depression. Electroconvulsive therapy (ECT) is an effective treatment for major depression (MD) with immunomodulation as ...

The synthesis of 2-hydroxy-4-heterocyclic phosphonic acids was achieved in a six-step sequence from the appropriate ketones. Thus, 2-hydroxyheterocyclic ketone acetals were prepared and then esterified by N-Boc-l-phenylalanine, used as a chiral auxiliary. The resulting heterocyclic acetal esters...

2-Alkyl-3-hydroxy-4(1H)-pyridinones can be oxidized by silver(I) oxide in alcoholic solution to give 2-alkoxy-2-alkyl-1,2dihydro-pyridine-3,4-diones, which can subsequently undergo a Michael addition with nucleophiles to give 6-substituted-2-alkyl-3-hydroxy-4(1H)-pyridinones.

The diastereoselective synthesis of β-amino-α-hydroxyphosphinates was achieved by hydrophosphinylation of N,N-dibenzyl-α-amino aldehydes with ethyl ethylphosphinate catalyzed by (S)-ALB. The hydrophosphinylation using ethyl phosphinate afforded both syn- and anti-β-amino-α-hydroxy-H-phosphi...

The Schiff-base ligand (H2salhyhNH3)Cl (1) derived from salicylaldehyde and 6-aminohexanoic acid hydrazide hydrochloride reacts with ammonium metavanadate in methanol solution to yield the dioxidovanadium(V) complex [VO2(salhyhNH3)] (2). The utilized hydrazone ligand contains a flexible and prot...

Several articles were published about the vanadate–3-hydroxy-1,2-dimethyl-pyridinone (Hdhp) system, however, the results are contradictory and not complete: pH-potentiometry and 51V NMR spectroscopy were used to clarify this complicated system. The eleven peaks in the spectra at different chemi...

To overcome the problem of fast degradation of Hyaluronic Acid (HA) in the treatment of osteoarthritis (OA), HA was protected against the oxidative stress generated by the pathology. Antioxidant conjugated HAs were synthesized and tested in vitro for their resistance in an oxidative environment ...