Groundwater contamination due to municipal solid waste landfills leachate is a serious environmental threat. During recent years, the use of stable isotopes as tracers identify groundwater phenomena has found application engineering. Deuterium (2H) and oxygen (18O) have successfully used if submitted interactions with leachate, significant organic amount. The paper shows two case studies, in ce...

We investigate the electronic structure of 2H and 3R polytypes NbS$_2$. The Fermi surfaces measured by angle-resolved photoemission spectroscopy show a remarkable difference in size, reflecting significantly increased band filling 3R-Nb$_{1+x}$S$_2$ compared to 2H-NbS$_2$, which we attribute presence additional interstitial Nb act as electron donors. Thus find that stoichiometry, rather than st...

Superconducting transition metal dichalcogenides emerged as a prime candidate for topological superconductivity. This work presents detailed investigation of superconducting and transport properties on 2H-TaSeS single crystals using magnetization, transport, specific heat measurements. These measurements suggest multigap anisotropic superconductivity with the upper critical field, breaking Paul...

Nitrous acid (HONO) plays pivotal roles in various metal-free as well metal-mediated routes relevant to biogeochemistry, atmospheric chemistry, and mammalian physiology. While the metastable nature of HONO hinders detailed investigations into its reactivity at a transition metal site, this report herein utilizes heteroditopic copper(II) cryptate [oC]CuII featuring proton-responsive second-coord...

The reaction between Ni(II), Co(II), cr(III) bitrates, Ni(II) chloride and ambidentate a-keto ylide benzoylmethylenetriphenylphosphine (BPPY) resulted in isolation of [Ni(BPPY)2](NO3)2.2H2O, [Ni(BPPY)2]Cl2, [Co(BPPY)2](NO3)2 and [Cr(BPPY)3](NO<sub...

We investigate the electronic structure of 2H and 3R polytypes NbS$_2$. The Fermi surfaces measured by angle-resolved photoemission spectroscopy show a remarkable difference in size, reflecting significantly increased band filling 3R-Nb$_{1+x}$S$_2$ compared to 2H-NbS$_2$, which we attribute presence additional interstitial Nb act as electron donors. Thus find that stoichiometry, rather than st...