نتایج جستجو برای: Calcium Promoter

تعداد نتایج: 255296  

Journal: :iranian journal of catalysis 0
vahid farzaneh biomass conversion science and technology (bcst) division, iran polymer and petrochemical institute, p.o. box 14975-115, tehran, iran. samira shirvani biomass conversion science and technology (bcst) division, iran polymer and petrochemical institute, p.o. box 14975-115, tehran, iran. samahe sadjadi biomass conversion science and technology (bcst) division, iran polymer and petrochemical institute, p.o. box 14975-115, tehran, iran. mohammad ghashghaee biomass conversion science and technology (bcst) division, iran polymer and petrochemical institute, p.o. box 14975-115, tehran, iran.

in the present study, the effects of calcium doping on the performance of the co-precipitated cu-mgo catalysts prepared with different calcium loadings in the selective hydrogenation of furfuraldehyde were investigated. the results proved that the addition of this promoter had a remarkable impact on the catalytic performance. the conversion of furfuraldehyde enhanced up to 83% and the furfuryl ...

In the present study, the effects of calcium doping on the performance of the co-precipitated Cu-MgO catalysts prepared with different calcium loadings in the selective hydrogenation of furfuraldehyde were investigated. The results proved that the addition of this promoter had a remarkable impact on the catalytic performance. The conversion of furfuraldehyde enhanced up to 83% and the furfuryl ...

In the present study, the effects of calcium doping on the performance of the co-precipitated Cu-MgO catalysts prepared with different calcium loadings in the selective hydrogenation of furfuraldehyde were investigated. The results proved that the addition of this promoter had a remarkable impact on the catalytic performance. The conversion of furfuraldehyde enhanced up to 83% and the furfuryl ...

Meysam Rezaei, Reza Tarvirdi-zadeh

In this study, linear alkyl-benzene calcium sulfonate nanoparticles were made using linear alkylbenzene. Calcium sulfonate nanoparticles are widely used as an additive in a variety of engine oils and have cleansing, anti-wear and anti-oxidant properties and anti-corrosion properties. In this method, a sulfonation set up was constructed and sulfonation reaction was carried out both directly and ...

2017
Adenike Ogunrinde Kim Munro Alexandra Davidson Midhat Ubaid Wayne A. Snedden

Calcium ions are used as ubiquitous, key second messengers in cells across eukaryotic taxa. In plants, calcium signal transduction is involved in a wide range of cellular processes from abiotic and biotic stress responses to development and growth. Calcium signals are detected by calcium sensor proteins, of which calmodulin (CaM), is the most evolutionarily conserved and well-studied. These sen...

Journal: :Journal of immunology 2000
R Chen T F Burke J E Cumberland M Brummet L A Beck V Casolaro S N Georas

The mechanism by which glucocorticoids (GC) inhibit IL-4 gene expression is currently unknown. In T lymphocytes, IL-4 gene expression is regulated at the level of transcription by increases in intracellular calcium concentration and by the calcium-activated phosphatase calcineurin. In this paper we report that dexamethasone (Dex) inhibits calcium ionophore-induced activation of the human IL-4 p...

Journal: :Neuron 2008
Zilong Qiu Anirvan Ghosh

CREST plays a critical role in activity-dependent development, but its mechanism of action is not well understood. Here, we show that a CREST-BRG1 complex regulates promoter activation by orchestrating a calcium-dependent release of a repressor complex and a recruitment of an activator complex. In resting neurons, transcription of the c-fos promoter is inhibited by BRG1-dependent recruitment of...

Ehsan Zayerzadeh Elham Zadeh Hashem Mohsen Eslami محمد کاظم کوهی,

BACKGROUND: Some of metal ions as environmental pollutants show estrogenic activity. This xenostrogenic compounds can be caused carcinogenicity in organs. The mechanism of carcinogenicity of metal ions is not clarified. OBJECTIVES: In this study, we investigated the Transcriptional effects of variety of metal ions on the bovine oxytocin and the thymidine kinase-ERE promoter by estrogen receptor...

Journal: :Neuron 1998
Perry B. Shieh Shu-Ching Hu Kathryn Bobb Tonnis Timmusk Anirvan Ghosh

A signaling pathway by which calcium influx regulates the expression of the major activity-dependent transcript of BDNF in cortical neurons has been elucidated. Deletion and mutational analysis of the promoter upstream of exon III reveals that transactivation of the BDNF gene involves two elements 5' to the mRNA start site. The first element, located between 72 and 47 bp upstream of the mRNA st...

Journal: :Journal of neurobiology 1998
L Adams D Goldman

Neurally evoked muscle electrical activity suppresses nicotinic acetylcholine receptor (nAChR) gene expression in extrajunctional domains of adult muscle fibers. It has been proposed that this regulation is mediated by calcium influx through voltage-dependent L-type calcium channels but bypasses the sarcoplasmic reticulum in chick and mouse C2C12 cells. Here we report that in rat muscle calcium...

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