A new library of ionophoric p-tert-butylcalix[4]diquinones containing ester (1), primary, secondary, and tertiary amide (2-4), and crown ether (5) substituents has been synthesized by treatment of the respective 1,3-bis-substituted p-tert-butylcalix[4]arene with Tl(OCOCF(3))(3) in trifluoroacetic acid. The structures of the free ligands 1 and 2, a p-tert-butylcalix[4]diquinone bridged at the lo...

1 We investigated the relationships between microscale distribution of soil organic matter 2 (SOM) features and their stability by combining optical microscopy, SEM-EDS analysis and 3 NaClO oxidation of soil thin sections on five soils from Harwood Forest in Northumberland 4 (UK) differently affected by water stagnation. 5 Plant organs at different stages of decomposition and amorphous organic ...

Background and objectives: Hawthorn as an ethno-pharmaceutical plant has been consumed for 2,500 years. Flowers, leaves and fruits of hawthorn are rich in antioxidant and polyphenols and are popular in the treatment of congestive heart failure. Methods: In the present study, by using various media and plant hormones the regeneration and callogenesis capacity of...

The cell potential of the cell containing two ion-selective electrodes (ISE), Na-ISE | NaClO4 (m), PEG 4000 (Y), H2O (100-Y) | ClO4-ISE has been measured at temperatures of (288.15, 298.15, and 308.15) K as a function of the weight percentage Y of PEG 4000 in a mixed solvent at a 1 Mpa and the standard state for measured activity coefficients will be ...

For years, gas chlorination has been the adopted disinfection technology in treatment of Maltese potable water. Despite its strong bacterial inactivation potential, traditional generates high free chlorine residual and by-products that compromise sensory attributes drinking water deter population from consuming it. We have identified plausible alternative-to-gas-chlorination technologies for tr...

Tremendous applications of carbon-based nanomaterials need the individualization particles in liquid phase, preferably an aqueous solution. Currently, one main challenges is how to obtain highly monodispersed and high-quality colloidal solutions make it usable electronic devices without performing badly. In this study, carbon nanoparticles (i.e., fullerenes, nanotubes, graphene) were individual...

Background: Systemic sclerosis (SSc) is a heterogeneous autoimmune pathology, which detailed pathogenetic mechanisms of initiation and progression still require further investigations. It could be achieved with implementation reliable experimental modeling techniques. Objectives: This study was aimed to determine the state oxidant/antioxidant system, dysregulation collagen synthesis in laborato...