in order to study the effects of micronutrients application on some morphological traits associated with seed quantity and quality of sugar beet cultivar shirin, an experiment was conducted in 2001-02 at ardabil agricultural research station. based on soil test results, soil ph was 7.62-7.80 with 0.49- 0.53% organic matter content, and the quantity of absorbable p, total n, and k amounts were f...

In several cases ethylenediaminetetraacetic acid (EDTA) proved to be an efficient mobilising amendment during chemically enhanced phytoextraction of heavy metals. The presence of Fe-(hydr)oxides and their dissolution after the addition of EDTA can limit the phytoextraction of the targeted heavy metals due to the high stability of the formed Fe(III)EDTA complexes. This study has focused on the i...

The Sorrento wetland hosts several Feand Mn-rich seeps that are reported to have appeared after the area was disturbed by recent attempts at development. Culture-independent and culture-based analyses were utilized to characterize the microbial community at the main site of the Fe and Mn seep. Several bacteria capable of oxidizing Mn(II) were isolated, including members related to the genera Ba...

Semiconductors that exhibit room-temperature ferromagnetism are central to the development of semiconductor spintronics. Transition metal (TM)-doped ABC2 are a promising class of such system. These ternary compound semiconductors have two metal sites A and B that can be substituted by the TMs. A site preference for TM incorporation is crucial for a possible explanation of ferromagnetism since d...

Citation: Waska H, Koschinsky A and Dittmar T (2016) Feand Cu-Complex Formation with Artificial Ligands Investigated by Ultra-High Resolution Fourier-Transform ion Cyclotron Resonance Mass Spectrometry (FT-ICR-MS): Implications for Natural Metal-Organic Complex Studies. Front. Mar. Sci. 3:119. doi: 10.3389/fmars.2016.00119 Feand Cu-Complex Formation with Artificial Ligands Investigated by Ultra...

We propose that the apparent catalytic inactivity of Mnand Fe-substituted superoxide dismutases (SODs) reflects E°s that are either lower (Fe-sub-(Mn)SOD) or higher (Mn-sub-(Fe)SOD) than those of native Feor Mn-SODs. In support, we show that the E° of Fe-sub-(Mn)SOD (Fe substituted into Mn-SOD protein) is -240 mV vs NHE, almost 0.5 V lower than our E° of 220 mV for Fe-SOD. The E° of Fe-sub-(Mn)...

[1] We integrate groundwater geochemistry, mineralogy, and numerical modeling techniques to study the reactive transport of heavy metals and isotopes in the Eutaw coastal plain aquifer, Alabama. Geochemical data show that the elevated concentrations of Fe, Mn, and Sr can be correlated with high pH and alkalinity. These geochemical correlations suggest that that elevated metal concentrations may...

The present study was conducted to evaluate the possibility of using peanut hulls for the removal of Feand Cu from aqueous solutions.This paper incorporates the effects of dose, concentration and pH.Adsorption of heavy metal on adsorbents was found to increase on decreasing initial concentration, the sorption capacity strongly increased with pH in the range 3-4. The results showed that the remo...

Magnetic nanoparticles MNPs possessing low Curie temperatures TC’s offer the possibility for self-regulated heating of cancer cells, where the TC acts as an upper limit to heating to prevent damage to neighboring healthy tissue. We report the synthesis of monodisperse metastable fcc -phase Fe–Ni MNPs possessing tunable TC’s, whose stoichiometries have been predicted from metastable extensions t...

The three-dimensional X-ray structure of a recombinant human mitochondrial manganese superoxide dismutase (MnSOD) (chain length 198 residues) was determined by the method of molecular replacement using the related structure of MnSOD from Thermus thermophilus as a search model. This tetrameric human MnSOD crystallizes in space group P2,2,2 with a dimer in the asymmetric unit (Wagner, U.G., Werbe...