Catalytic Transformation of Nitroarenes to Amines over BaSrTiO (0 < x < 1) Perovskites in Water.

This work is focused on the application of lanthanide-free perovskite BaSrTiO (0 < x < 1) in valorization of toxic pollutants as 4-nitrophenol (4-NPh). The series of perovskites were fabricated by facile, one-step solid-state preparation method and characterized via various techniques: elemental analysis (Inductively Coupled Plasma Optical Emission Spectrometry, ICP-OES), powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and dielectric properties (impedance spectroscopy, IS). The methods confirmed the assumed composition, structure and high purity of the materials.

Additive Interactions between Betulinic Acid and Two Taxanes in In Vitro Tests against Four Human Malignant Melanoma Cell Lines.

The incidence of melanoma is steadily increasing worldwide. Melanoma is the most lethal skin cancer, and new therapeutic methods are being sought. Our research aimed to investigate the cytotoxic and antiproliferative effects of betulinic acid in vitro, used alone and in combination with taxanes (paclitaxel, docetaxel) in four melanoma cell lines.

Evaluation of Rhodamine B Photocatalytic Degradation over BaTiO-MnO Ceramic Materials.

Ferroelectric ceramics (BaTiO_MnO) with different Mn admixtures were prepared using solid-state synthesis. Elemental analysis, powder X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, and impedance spectroscopy confirmed that the BaTiO and MnO coexisted in the ceramics. In addition, the high purity and homogeneity of the element distributions in the ceramic samples were confirmed.

Intellectual humility: an old problem in a new psychological perspective.

Though having been emphasised by philosophers and theologians for centuries, it is only in the last few years that the concept of intellectual humility has been explicitly defined and studied by empirical psychology. However, it has been long enough to recognise the prominent role that being intellectually humble plays for humane functioning, both at an intra- and inter-individual level. Having started with a broader philosophical and historical context, the present paper discusses the psychological conceptualisations of intellectual humility.