Interaction of nickel with oxidative and antioxidative molecules in Cichorioideae species.

The uptake of nickel (Ni) by Asteraceae/Cichorioideae species Cichorium intybus, Leontodon hispidus and Hieracium aurantiacum exposed to Ni (0.3 or 30 μM) over 14 days and subsequent changes of metabolites were compared in order to identify their phytoaccumulation potential. Hieracium contained the most Ni (194 and 1558 μg Ni/g DW at 30 μM Ni in shoots and roots) but had unchanged amount of antioxidants (vitamin C and thiols) in the shoots and an elevated amount in the roots, which may be the reason for the absence of visible damage.

The Effect of Foaming Agents on the Thermal Behavior of Aluminum Precursors.

Various foaming agents can be used to achieve foaming of the precursors obtained by using the powder metallurgy method. However, the thermal behavior of pure aluminum precursors with different foaming agents has been studied very little in recent times. For the production of aluminum foams with closed cells, 1 wt.

Visual plant anatomy: From science to education and vice versa.

Plant biology, mainly plant anatomy, is a less attractive area for students at high school and university, but not much research has been devoted to improve this field. We therefore researched into the teaching of root, stem and leaf anatomy combined with the preparation of native microscopic slides and histochemical reaction using two selected dyes (classic phloroglucinol test combined with textile dye 'Duha green' to visualize xylem and phloem, respectively). The use of reagents in teaching had a positive effect on students' knowledge (control/ experimental class) of root (+70%), stem (+70%) and leaf anatomy (+130%) as well as vascular and mechanical tissues (+170%), leading to an overall improvement of knowledge by ca.

Study on Surface Roughness, Morphology, and Wettability of Laser-Modified Powder Metallurgy-Processed Ti-Graphite Composite Intended for Dental Application.

In this study, the surface laser treatment of a new type of dental biomaterial, a Ti-graphite composite, prepared by low-temperature powder metallurgy, was investigated. Different levels of output laser power and the scanning speed of the fiber nanosecond laser with a wavelength of 1064 nm and argon as a shielding gas were used in this experiment. The surface integrity of the machined surfaces was evaluated to identify the potential for the dental implant's early osseointegration process, including surface roughness parameter documentation by contact and non-contact methods, surface morphology assessment by scanning electron microscopy, and surface wettability estimation using the sessile drop technique.