Engineering 0.8BiFeO-0.2BaTiO multiferroics with improved dielectric and magnetic properties samarium doping.

Samarium (Sm) modification is emerging as a powerful strategy to manipulate the electrical response of 0.8BiFeO-0.2BaTiO (BFBT) multiferroic ceramics.

Orthorhombic-tetragonal phase coexistence and enhanced piezoelectric properties at room temperature in Zn and Ta modified (BaCa)(ZrTi)O ceramics through the synergistic effect of lattice distortion.

This study provides a fundamental understanding of the enhanced piezoelectric properties in ABO perovskite based lead-free piezoelectric materials. For this we synthesized (BaCa)(ZrTi (ZnTa) )O((1 - )BCZT-()ZT) ( = 0.00, 0.

Investigating the influence of Cu and Ti substitution on the structural, optical, and dielectric properties of BiFeO.

The environmentally friendly BiFe(TiCu)O system with various substitution rates, including = 0 (BFO), = 0.02 (BFTCO) and = 0.04 (BFTCO), has been synthesized using the solid-state reaction technique.

Lead removal from the aqueous solution by extracellular polymeric substances produced by the marine diatom .

Microbial extracellular polymeric substances (EPS) have recently emerged as significant contributors in diverse biotechnological applications. Extracellular polymeric substances (EPS), produced by a strain, have been studied for potential applications in a specific heavy metal (lead (Pb II)) removal from wastewater. The optimisation of operational parameters, mainly pH, Pb and EPS concentrations, using the Box-Behnken design (BBD) was undertaken to enhance lead uptake.

A facile fabric phase sorptive extraction method for monitoring chloramphenicol residues in milk samples.

Determination of pharmaceutical active molecules in the biological matrices is crucial in various fields of clinical and pharmaceutical chemistry, e.g., in pharmacokinetic studies, developing new drugs, or therapeutic drug monitoring.

Assessment of Cholesterol, Glycemia Control and Short- and Long-Term Antihypertensive Effects of Smooth Hound Viscera Peptides in High-Salt and Fructose Diet-Fed Wistar Rats.

In this study, the antihypertensive activity of Purafect-smooth hound viscera protein hydrolysate (VPH) and its peptide fraction with molecular weight (MW) below 1 kDa (VPH-I) was investigated. In addition, the lipase inhibitory activity, as well the anticoagulant potential, in vitro, were assessed. The antihypertensive effects of VPH and VPH-I were studied during 24 h (short-term effect) and 30 days (long-term effect) using high-salt (18% NaCl) and -fructose (10%) diet (HSFD)-induced hypertension.

The Management of Depressed Patients by the Tunisian General Practitioners: A Critical Trans-sectional Study.

Under-diagnosed and under-treated, depression has a pejorative prognosis. The general practitioners (GP) represent the most often consulted healthcare professionals by depressed patients. The aim was to describe how the Tunisian GPs manage the depressed patients and to note the difficulties they encounter in order to suggest corrective measures.

Hyper-Raman and Raman scattering from the polar modes of PbMg1/3Nb2/3O3.

Microhyper-Raman spectroscopy of PbMg(1/3)Nb(2/3)O(3) (PMN) single crystal is performed at room temperature. The use of an optical microscope working in backscattering geometry significantly reduces the LO signal, highlighting thereby the weak contributions underneath. We clearly identify the highest frequency transverse optic mode (TO3) in addition to the previously observed soft TO-doublet at low frequency and TO2 at intermediate frequency.

Modelling the phytoplankton dynamics in a nutrient-rich solar saltern pond: predicting the impact of restoration and climate change.

An ecological model for the solar saltern of Sfax (Tunisia) was established and validated by comparing simulation results to observed data relative to horizontal distributions of temperature, nutrients and phytoplankton biomass. Sensitivity analysis was performed in order to assess the influence of the main ecological model parameters. First applied at the saltern's pond A1, the model was calibrated with field data measured over 4 years of study (from 2000 to 2003), which allowed an evaluation of parameters such as maximum growth rate of phytoplankton, optimal growth temperature and constant of half saturation for P/N assimilation by phytoplankton.

Impacts of restoration of an uncontrolled phosphogypsum dumpsite on the seasonal distribution of abiotic variables, phytoplankton, copepods, and ciliates in a man-made solar saltern.

The restoration of an uncontrolled phosphogypsum landfill was investigated for its effects on the seasonal distribution of phytoplankton, ciliates, and copepods. Sampling was carried out monthly from September 2007 to August 2008 at four ponds of increasing salinity (A1, 41 psu; A5, 46 psu; A16, 67 psu; and C31, 77 psu) in the Sfax solar saltern (southeastern Tunisia). Physicochemical and biological analyses were carried out using standard methods.