Results 61 to 70 of about 1,102,070 (346)
Solid transformations as a variant of three-dimention nanotechnology [PDF]
, 2011 The given article discusses a variant of natural nanotechnology in a volume material under solid-phase transformation. The article provides results on acoustic splitting in ammonium oxide NH4ClO4 in the low-temperature region.
Belomestnykh, V.N., Tesleva, E.P.
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The ammonolysis of esters in liquid ammonia [PDF]
, 2013 The rates of ammonolysis of alkyl benzoate and phenylacetate esters in liquid ammonia increase with the acidity of the leaving group alcohol and show relatively large Brønsted βlg values of −1.18 and −1.34, respectively, when plotted against the aqueous ...
Atherton, John +2 more
core +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Plant, Soil and Environment, 2011 The experiment was carried out to observe the influence of the CULTAN method (controlled uptake long term ammonium nutrition) on grain yield and yield formation of spring barley cultivar Jersey.
O. Sedlář +4 more
doaj +1 more source
Scalant Removal at Acidic pH for Maximum Ammonium Recovery
Membranes, 2022 One option for new nitrogen sources is industrial liquid side streams containing ammonium nitrogen (NH4-N). Unfortunately, NH4-N often exists in low concentrations in large water volumes.
Hanna Kyllönen +3 more
doaj +1 more source
A 110,000‐year history of change in continental biogenic emissions and related atmospheric circulation inferred from the Greenland Ice Sheet Project Ice Core [PDF]
, 1997 The 110,000‐year record of ammonium concentrations from the Greenland Ice Sheet Project 2 (GISP2) ice core provides the basis for an analysis of terrestrial biological production and atmospheric circulation patterns involved in the transport of ...
Mayewski, Paul A. +4 more
core +3 more sources
β‐TrCP overexpression enhances cisplatin sensitivity by depleting BRCA1
Molecular Oncology, EarlyView.Low levels of β‐TrCP (Panel A) allow the accumulation of BRCA1 and CtIP, which facilitate the repair of cisplatin‐induced DNA damage via homologous recombination (HR) and promote tumor cell survival. In contrast, high β‐TrCP expression (Panel B) leads to BRCA1 and CtIP degradation, impairing HR repair, resulting in persistent DNA damage and apoptosis ...
Rocío Jiménez‐Guerrero +8 more
wiley +1 more source
Nitrogen compounds and enzyme activities in sorghum induced to water deficit during three stages
Plant, Soil and Environment, 2009 The aim of this study was to evaluate and explicate the changes in the nitrogen compounds and enzyme activities in Sorghum bicolor plants (cv. BR-700) submitted to water deficit during vegetative, reproductive and maturation stages.
C.F. Oliveira Neto +9 more
doaj +1 more source
Nitrogen, 2022 The San Francisco Bay Delta has been an estuary of low productivity, with causes hypothesized to relate to light limitation, grazing by invasive clams, and polluting levels of NH4+ discharge from a wastewater treatment plant. Suppression of phytoplankton
Patricia M. Glibert +3 more
doaj +1 more source
Influence of presence of ammonium in the hydrothermal illitization of smectite [PDF]
, 2017 During diagenesis, several reactions induce changes both in phyllosilicates and organic matter, which in basins associated to the production of hydrocarbons leads to ammonium fixation in illite and micas [1] and to dissolution induced by organic acids [
Bentabol-Manzanares, Maria Jose
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