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Iron and Sulfur Precursors Affect Crystalline Structure, Speciation, and Reactivity of Sulfidized Nanoscale Zerovalent Iron.

Environmental Science and Technology, 2020
Reactivity of sulfidized nanoscale zerovalent iron (SNZVI) is affected by the amount and species of sulfur in the materials. Here, we assess the impact of the Fe (Fe2+ and Fe3+) and S (S2O42-, S2-, and S62-) precursors used to synthesize both NZVI and ...
Jiang Xu   +6 more
semanticscholar   +1 more source

Precursors to dodecahedrane

Acta Crystallographica Section C Crystal Structure Communications, 2003
The title compounds, (2R,2"S,3b'S,4a'R,7b'S,8a'R)-perhydrodispiro[furan-2,3'-dicyclopenta[a,e]pentalene-7',2"-furan]-5,5"-dione, C(20)H(26)O(4), and (3aR,3bR,4aR,4bS,5aS,8aR,8bR,9aR,9bS,10aS)-perhydrodipentaleno[2,1-a:2',1'-e]pentalene-1,6-dione, C(20)H(26)O(2), are intermediates identified during the synthesis of dodecahedrane.
DAMODHARAN, L   +3 more
openaire   +3 more sources

Precursors

Narrative Environments and Experience Design, 2020
T. Austin
semanticscholar   +3 more sources

Effect of the addition of exogenous precursors on humic substance formation during composting

Waste Management, 2018
The aim of this work was to explore the effect of the addition of exogenous precursors on humic substance (HS) formation during composting. HS formation is a complex biochemical process that occurs during composting.
Duo-Ying Zhang, Zimin Wei
exaly   +2 more sources

Precursors to PP

Physics of the Earth and Planetary Interiors, 1975
Abstract The results of a theoretical study of the interpretation of precursors to PP (Δ ∼ 100°) in terms of scattering by small-scale random irregularities in the crust and uppermost mantle are presented. These results are compared with observational data from two nuclear explosions recorded at the Warramunga array and three earthquakes recorded at ...
King, D. W.   +2 more
openaire   +1 more source

Cancer precursors

Seminars in Cutaneous Medicine and Surgery, 1998
A significant proportion of cutaneous malignancies arise from well-defined precursor lesions that have often been present for many years. This provides an opportunity to reduce rates of skin cancer by recognition and treatment of these lesions. Precursors of keratinocytic malignancy, such as actinic keratoses and Bowen's disease, are extremely common ...
openaire   +2 more sources

Precursors

2023
Abstract The first decade of Saddam’s rule in Iraq was bloody and tumultuous. He had inherited the ideology and institutions of the Ba‘th Party, but he restructured them to meet the challenges created by mass migration and the rise of political Islam.
  +4 more sources

Hormone precursors

Clinics in Endocrinology and Metabolism, 1980
Evidence for the existence of multiple forms of various peptide hormones has been accumulated. The processing of the hormone precursors by cleavage at specific arginine or lysine residues can account for the presence of multiple forms.
openaire   +2 more sources

Persistence of Perfluoroalkyl Acid Precursors in AFFF-Impacted Groundwater and Soil

Environmental Science & Technology, 2013
Erika F Houtz   +2 more
exaly   +2 more sources

ARE THERE PRECURSORS TO REPRESSION?

The Journal of Nervous and Mental Disease, 1977
The author examines the possibility that repression has developed out of phylo- and ontogenetic precursors. The adaptive task of repression is to control instinctual behavior by screening out those stimuli (internal or external) which could trigger unacceptable behavior.
openaire   +2 more sources

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