In pursuit of a potential low-resistive contact structure, ErSi2-x was grown on an excessively P-doped and highly strained epitaxial Si layer (Si:P with a P concentration of ∼2.8 at%), and its microstructure was investigated in comparison to that grown on a conventional Si(001) substrate. On th...

Electron paramagnetic resonance (EPR) spectroscopy was used for investigation of the structure of spin-labeled myosin subfragment 1 (S1) containing ADP and phosphate analogues, such as orthovanadate, aluminium fluoride (AlF4), and beryllium fluoride (BeFx). It has been shown that the local confo...

The justification of the need to remove fluorine from the complex beryllium-containing concentrates during their treatment before the stage of beryllium hydroxide precipitation is given. The analysis of possible ways of fluorine elimination from beryllium raw materials has been carried out.

A highly sensitive molecular fluorescence method for measuring ultra-trace levels of beryllium has been previously described. The method entails extraction of beryllium workplace samples by 1% ammonium bifluoride (NH4HF2, aqueous), followed by fluorescence detection using hydroxybenzoquinoline s...

A new technique of decomposing beryl ore at low temperature with ammonium hydrofluoride (NH4HF2) is proposed. Removing the fluorides of silicon and aluminium from the reaction product as volatile and insoluble compounds, respectively, have been investigated experimentally and the feasibility of ...

In this work trace lanthanum hexaboride (LaB6) and elemental boron are alloyed with Ti-6Al-4V and their effects on the microstructure, tensile properties (including anisotropy) and melt pool shape during Additive Manufacturing (AM) are investigated. During the melting process, the LaB6 scavenges...

The chemical and electrochemical behaviour of compounds of the type [Co(C5R5)2][M(CO)n] (R = H, Me; M = Mn; n = 5; R = H; M = Co, n = 4; M = V; n = 6) was studied. A relationship between the chemical behaviour and the redox potentials of the components of the complexes was obtained. The reductio...

The metallocenyldiphenylphosphines [M(C5H5)(C5H4PPh2)] with M = Fe(II) (ferrocenyl = Fc), 1, Ru(II) (ruthenocenyl = Rc), 2, Os(II) (osmocenyl = Oc), 3, and Co(III)+PF6− (cobaltocenium hexafluorophosphate = [Cc][PF6]), 4, were synthesized and the crystal structure of RcPPh2, 2, (Z = 4, monoclinic...

The activation of NADPH oxidase contributes to dopaminergic neurodegeneration induced by paraquat and maneb, two concurrently used pesticides in agriculture. However, the mechanisms remain unclear. Ferroptosis, a recently recognized form of regulated cell death, has been implicated in the pathog...

Broad applications and exposure to the fungicide maneb can lead to toxicity in non-target organisms. Maneb is also associated with neurogenerative diseases such as Parkinson's disease (PD). The objectives of this study were to determine the acute toxicity of maneb to zebrafish by measuring ...

Installing thermal insulation materials on the external and/or interior wall is a primary means for the conservation of building energy. Expanded perlite is one of the most widely used inorganic building insulation materials nowadays. However, it not only consumes a large amount of energy in the...

The main objective of this work is to evaluate the organofunctionalization of the expanded perlite with orthophenanthroline. Thermogravimetry was used to quantify the orthophenanthroline content incorporated in the material. The thermogravimetric analysis showed that, for very low concentrations...

The thermal and mechanical properties of a lightweight alkali bonded material were investigated in correlation with the microstructure and porosity. The material was produced using fine granules of expanded perlite as raw powder and potassium di-silicate aqueous solution as alkaline activator, i...

Expanded perlite is worldwide used material. Due to its low bulk density is used mainly in building materials technology as a filler in lightweight composites, thermal, acoustic, fire insulation as well as in horticulture and agriculture. Due to its extremely low bulk density waste expanded perl...

This manuscript is based on the study of pozzolanic activity of the perlite powder (PP) of Hammam Boughrara by the consumption of lime and the hydration of paste made with 75% of PP and 25% of lime. The fresh properties of the cement pastes were defined by normal consistencies, initial and final...

Grouting is a widely used intervention technique for the consolidation and strengthening of historic masonries. During the recent decades, lime-based grouts have been developed, tested and applied, taking into account parameters, such as their compatibility with the historic structures and their...

The capability and capacity of various tissues in black tetra Gymnocorymbus ternetzi (Boulenger), family Characidae, to take up horse-spleen ferritin from the blood stream are described. In the head kidney from specimens injected intraperitoneally with horse-spleen ferritin, numerous large cells...

The increasing interests in magnetic nanoparticles has prompted research on ferritin, which is naturally a well-defined iron-storage protein in most living organisms. However, the exact magnetic behavior of ferritin is not well understood, because the crystal structures of ferritin and ferrihydr...

In this work, a novel efficient photocatalyst comprising molybdenum disulfide (MoS2) nanosheets and conjugated polyvinyl alcohol (CPVA) has been successfully synthesized. To effectively coat the conjugated polyvinyl alcohol on the surface of molybdenum disulfide, molybdenum disulfide nanosheets ...

ABSTRACTThe kinetics of Cr(VI) reduction by sulfide in soil suspensions with various pHs, soil compositions, and Fe(II) concentrations was examined using batch anaerobic experimental systems at constant temperature. The results showed that the reaction rate of Cr(VI) reduction was in the order o...