The amounts of superoxide and hydrogen peroxide generated by mitochondria under physiological conditions can be enhanced by cellular stress. This study tested the hypothesis that the response to hemin-induced stress, which includes heme oxygenase-1 (HO-1) induction, predisposes to oxidative dama...
Field desorption mass spectroscopy was shown to be a valid technique for determining the molecular weights of hemins and hemin esters, as well as of porphyrins. The observed base peaks of ligand-free protoheme IX, protoheme IX dimethyl ester, and protoporphyrin IX dimethyl ester correspond well ...
The agent hemin has been demonstrated to be able to initiate a coordinated differentiation program in several cell types. In the present study, we examined the ability of hemin on inducing cell differentiation and Ca2+-activated K+ channel activity in erythroleukemic K562 cells. Treating undiffe...
This work describes the photocatalytic activity of Hemin surface modified ZnO. The materials obtained were characterized by powder X-ray diffraction (PXRD), ultraviolet–visible spectroscopy (UV–vis), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM). The spe...
A bis(thiolato) complex of iron-porphyrin exhibiting a “split Soret band” with peaks at 374 and 466 nm, classified as a “hyperporphyrin (HP) spectrum”, was prepared with Fe(III)protoporphyrin dimethyl ester (FePPIXDME), glutathione dimethyl ester (GSHDME) and tetrabutylammonium hydroxide in ...
Reconstitution of enzymes onto surface tethered cofactors may be considered as a powerful tool both for design of biorecognition interfaces with a molecular-level control over spatial distribution and orientation of biosensing elements and for fundamental studies of their structure–function rel...
Peroxynitrite (ONOO−) constitutes a major cytotoxic agent, implicated in a host of pathophysiological conditions, thereby stimulating a tremendous interest in evaluating its role as an oxidant in vivo. Some of the detection methods for peroxynitrite include oxidation of fluorescent probes, EPR s...
Hydrometallurgical route normally has lower energy consumption and less carbon dioxide emission than high-temperature smelting route. However, efficient removal of impurities is a common challenge for hydrometallurgical process. A facile recovery route of spent lead-acid battery pastes, includin...
This research was undertaken to assess the impact of 1 mM salicylic acid (SA) and 0.5 mM jasmonic acid (JA) on alleviation of oxidative, ionic and osmotic stresses of different levels of salinity (0, 4, 7, 10 dS m−1 NaCl, respectively). Salinity increased the contents of glycine betaine, proline...
This paper presents a review of current routes to utilize sulfur and sulfuric acid. Sulfur is a by-product from sour gas and crude oil processing and the precursor of sulfuric acid. As an oversupply is projected for the near-term future, it is prudent to investigate new sulfur applications and m...
Lead in the Waste lead-acid batteries (WLAB) is a serious, important environmental problem if it is not properly disposed. And this is one of the issues that catches the world attention. At the same time, the waste lead is a kind of resource which is worthy of recovery. This paper proposes a new...
Lithium-sulfur battery is one of the most potential high-performance electrochemical energy storage devices with widely applications, however, when using lithium metal as an anode a number of problems exist, including strong chemical activity with the organic electrolyte system and susceptibilit...
The drive for commercializing high energy density lithium-sulfur batteries is leading to the development of various material architectures for suppressing the notorious “shuttle effect” of intermediate polysulfides and improve cycle life. Inspired by the structural features of plant roots prot...
Increasing environmental concerns about organic waste in paper mill effluents demand alternative wastewater management technology. We reported novel activation of fulvic acid-like in paper mill effluents using hydrogen peroxide (H2O2) as oxidizer and titanium oxide (TiO2) as catalyst. Spectrosco...
During the solvent extraction (SX) experiments of tantalum (Ta) and niobium (Nb), the aqueous phase consisted of tantalum- and niobium penta-fluoride (Ta(Nb)F5), water (H2O) and sulphuric acid (H2SO4), which was contacted with an organic phase. In this study the aqueous phase used during SX was ...
This review gives a complete coverage of all aspects of organothallium(I) chemistry. Thallium(I) compounds containing the cyclopentadienyl and electronically related ligands, most notably the hydrotris(pyrazolyl)borate ligand are described in detail. In addition, thallium(I)—arene complexes and...
Publisher SummaryPoly (pyrazolyl)borate complexes of the group-10 triad are noticeably less numerous than many transition metals. However, the study of these materials has typically proven more systematic than for many others, dominated by investigation of reactivity traits with limited incidenc...
Publisher SummaryThis chapter reviews the chemistry observed with Group 7 (Mn, Tc, and Re) poly(pyrazolyl)borate complexes. The redox flexibility of these transition metals and the variability of poly(pyrazolyl) borate ligands have resulted in a wide range of chemistry. Poly(pyrazolyl)borate lig...
This article focuses on the synthesis of a family of rotary molecular motors based on a penta-substituted cyclopentadienyl tris(indazolyl)borate ruthenium(II) complex. In order to demonstrate a movement of rotation in this family of molecular motors, dissymmetric derivatives with one ferrocene m...
The sterically hindered tetrakis-(3-(p-tolylpyrazolyl)borate [pz0Tpp-Tol] has been prepared and its reaction with CuX2.nH2O (X = Cl or acetate (OAc), M(NO3)2.6H2O (M = Ni, or Co) and MCl2 (M = Zn or Cd) has been investigated. [M(pz0Tpp-Tol)X(Hpzp-Tol)] (M = Cu, X = Cl or OAc; M = Ni or Co, X = N...
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