نتایج جستجو برای: strontium carbonate

تعداد نتایج: 31815  

Journal: :Catalysts 2022

Some perovskites exhibit catalytic activity in the abatement of organic pollutants water. However, their performance decreases over time, possibly due to forms poisoning, such as carbonate formation. Here, we present kinetics formation on a Ce-doped SrFeO3 perovskite with formula Sr0.85Ce0.15FeO3?? (SCF), which can act thermocatalyst for degradation pollutants. The was studied air, deionized wa...

Journal: : 2022

Objectives. Triple barium–strontium–calcium carbonates of various grades are widely used for depositing oxide coatings on cathodes electrovacuum devices. Of all types in devices, among the most common, due to combining efficiency, durability, operation at relatively low temperatures, and a cost. The aims this work were to: create technology synthesis triple with nonequilibrium phase composition...

Journal: :Biophysical journal 1999
M A Xu-Friedman W G Regehr

Strontium can replace calcium in triggering neurotransmitter release, although peak release is reduced and the duration of release is prolonged. Strontium has therefore become useful in probing release, but its mechanism of action is not well understood. Here we study the action of strontium at the granule cell to Purkinje cell synapse in mouse cerebellar slices. Presynaptic residual strontium ...

2014
M. Ghobeiti - Hasab

Magnetic powder of Sr-ferrite was prepared by conventional and sol-gel auto-combustion methods. In conventional method, strontium carbonate and ferric oxide powders were mixed together and then mixture was calcined. In sol-gel auto-combustion method, a solution containing strontium nitrate, ferric nitrate and citric acid was heated until the combustion took place automatically; then, as-burnt p...

2003
DANIELLE C. ZACHERL GEORGES PARADIS DAVID W. LEA

The trace elemental composition of calcified larval hard parts may serve as useful tags of natal origin for invertebrate population studies. We examine whether the trace metal barium (Ba) deposits into the calcium carbonate matrix of molluscan larval statolith and protoconch in proportion to seawater Ba concentration at two temperatures (11.5 and 17°C). We also examine strontium (Sr) uptake as ...

Journal: :Biointerphases 2013
Julia Kokesch-Himmelreich Matthias Schumacher Marcus Rohnke Michael Gelinsky Jürgen Janek

Commonly used implants for therapeutic approaches of non-systemically impaired bone do not sufficiently support the healing process of osteoporotic bone. Since strontium (II) has been proven as an effective anti-osteoporotic drug new types of strontium enriched calcium phosphate bone cements were developed. As osteoporosis is characterized by an imbalance of osteoblast and osteoclast activity t...

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