نتایج جستجو برای: cerium oxide nanoparticles conps

تعداد نتایج: 271439  

ALI BAHRAMI SAMANI, FATEMEH SOLTANI, KAMAL YAVARI, MAHDI SADEGHI, SIMINDOKHT SHIRVANI ARANI,

In recent years, nanotechnology has gained serious attention for diagnosis, prevention and treatment roles. In this study we synthesized nanoceria or CeO2NPs (cerium oxide nanoparticles) and compared toxicity of cerium oxide powder in nano and bulk forms in two cancerous and one normal cell lines. The cell lines were cultured in a standard humidified incubator, at 37 °C in a 5% CO2 atmosphere, ...

Journal: :Chemical communications 2011
Atsuhiro Tanaka Keiji Hashimoto Hiroshi Kominami

Gold nanoparticles supported on cerium(IV) oxide powder showing strong absorption at around 550 nm due to surface plasmon resonance oxidized aromatic alcohols to corresponding aldehydes almost quantitatively in an aqueous suspension under irradiation of green light.

Journal: :international journal of nano dimension 0
b. sathyaseelan department of physics, university college of engineering arni (a constituent college of anna university chennai) arni 632 317, tamilnadu, india. s. sambasivam department of physics, pukyong national university, busan-608 737, south korea. t. alagesan department of physics, presidency college, chennai 600 005, tamil nadu, india. k. sivakumar department of physics, anna university, chennai-600025, tamilnadu, india.

nanocrystalline particles of cerium oxide (ceo2) have been prepared by the chemical precipitation method using cerium nitrate and urea with a molar ratio of 1:2. the results revealed that the formation of ceo2 fine particles is influenced by molar ratio of metal nitrates to fuel. well faceted ceo2 nanoparticles, were synthesized by thermal-assisted dissociation method at reflux temperature in a...

Journal: :Chemical communications 2012
Avinash J Patil Ravinash Krishna Kumar Nicholas J Barron Stephen Mann

Hybrid supramolecular hydrogels are prepared by non-enzymatic dephosphorylation of N-fluorenylmethyloxycarbonyl tyrosine-(O)-phosphate (FMOC-Tyr-P) using catalytic cerium oxide nanoparticles. The organic-inorganic hydrogels exhibit enhanced viscoelastic properties compared with analogous materials prepared using alkaline phosphatase.

Journal: :Science 2003
Qi Fu Howard Saltsburg Maria Flytzani-Stephanopoulos

Traditional analysis of reactions catalyzed by supported metals involves the structure of the metallic particles. However, we report here that for the class of nanostructured gold- or platinum-cerium oxide catalysts, which are active for the water-gas shift reaction, metal nanoparticles do not participate in the reaction. Nonmetallic gold or platinum species strongly associated with surface cer...

Journal: :Biochemical and biophysical research communications 2006
David Schubert Richard Dargusch Joan Raitano Siu-Wai Chan

The responses of cells exposed to nanoparticles have been studied with regard to toxicity, but very little attention has been paid to the possibility that some types of particles can protect cells from various forms of lethal stress. It is shown here that nanoparticles composed of cerium oxide or yttrium oxide protect nerve cells from oxidative stress and that the neuroprotection is independent...

Journal: :SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology 2022

For the synthesis of Cobalt Nanoparticles (CoNPs), prudent wet phase reduction process was applied by employing urea as an effective oxidizing agent. The requirement analogous precipitation executed method fulfilled taking advantage sufficiently slow hydrolysis in water at acceptable temperature. experiment carried out mixing cobalt nitrate and (1:2) distilled water. reaction mass then subjecte...

2017
Ravi Kant Upadhyay

Present review article describes main causes of chronic kidney disease a major health problem public health problem round the globe. Disease has multiple etiologies related to sequential pathophysiological stages. It has major concern with chronic changes in renal structure and that severely alter glomerular filtration rate in patients. This article explains CKD biomarkers in brief i.e., serum ...

2005
Heejung Jung David B. Kittelson Michael R. Zachariah

The influence of a cerium additive on the kinetics of oxidation and size distribution of ultrafine diesel particles was studied using a high-temperature oxidation-tandem differential mobility analysis method over the temperature range 300–700 ◦C. The addition of cerium to the diesel fuel was observed to cause significant changes in numberweighted size distributions, light-off temperature, and k...

Journal: :OncoTargets and Therapy 2014

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