Repositorio UMAYOR: Envíos recientes
Mostrando ítems 3641-3660 de 7967
-
Catalytic effects of p-phenylene-bridged methylated binuclear ferrocenes on thermal decomposition of the main component of composite solid propellants
(ELSEVIER SCIENCE BV, 2018)This contribution describes the catalytic activity of homobimetallic complexes derived from p-phenylene on the thermal decomposition of ammonium perchlorate (abbreviated as AP). The complexes, [CpFe-p-Ph-FeCp] (1), ... -
Structural, electronic and catalytic properties of palladium nanoparticles supported on poly(ionic liquid)
(ELSEVIER SCIENCE BV, 2018)The structural, electronic and support effect on palladium nanoparticles (Pd NPs) prepared by sputtering deposition and chemical reduction of a Pd(II) precursor in/on a poly(ionic liquid) (PIL) was investigated in the ... -
Graphene Oxide Quantum Dots as the Support for the Synthesis of Gold Nanoparticles and Their Applications as New Catalysts for the Decomposition of Composite Solid Propellants
(AMER CHEMICAL SOC, 2018)Graphene oxide quantum dot (GOQD) and reduced GOOD (rGOQD) were synthetized using a simple and straight methodology based on an oxidative treatment and sonication. GOQD and rGOQD were used as supporting agents for the in ... -
Protein capped nanosilver free radical oxidation: role of biomolecule capping on nanoparticle colloidal stability and protein oxidation
(ROYAL SOC CHEMISTRY, 2018)We studied the effect of human serum albumin protein capped spherical nanosilver on the nanoparticle stability upon peroxyl radical oxidation. The nanoparticle-protein composite is less prone to oxidation compared to the ... -
Layer-by-layer assembled gold nanoparticles/lower-generation (Gn <= 3) polyamidoamine dendrimers-grafted reduced graphene oxide nanohybrids with 3D fractal architecture for fast, ultra-trace, and label-free electrochemical gene nanobiosensors
(ELSEVIER ADVANCED TECHNOLOGY, 2018)Three layer-by-layer (LBL) assembled gold nanoparticles (AuNPs)/lower-generation (Gn <= 3) polyamidoamine dendrimer (PD) with reduced graphene oxide (rGO) as the core/mercaptopropinoic acid (MPA)/Au were successfully ... -
A mechanistic approach for the optimization of loperamide loaded nanocarriers characterization: Diafiltration and mathematical modeling advantages
(ELSEVIER SCIENCE BV, 2018)Oral bioavailability of loperamide is restricted by its limited absorption in the gastrointestinal tract due to its poor aqueous solubility and its P-glycoprotein (Pgp) substrate characteristic. In addition, ammonium ... -
NANoPoLC algorithm for correcting nanoparticle concentration by sample polydispersity
(ROYAL SOC CHEMISTRY, 2018)Variability in the polydispersity of colloidal nanoparticles results in significant differences in the total number of nanoparticles available for the determination of their concentration, which ultimately affects their ... -
Regulation of developing myelin sheath elongation by oligodendrocyte calcium transients in vivo
(NATURE PUBLISHING GROUP, 2018)How action potentials regulate myelination by oligodendrocytes is uncertain. We show that neuronal activity raises [Ca2+](i) in developing oligodendrocytes in vivo and that myelin sheath elongation is promoted by a high ... -
Long Non-Coding RNAs Responsive to Salt and Boron Stress in the Hyper-Arid Lluteno Maize from Atacama Desert
(MDPI, 2018)Long non-coding RNAs (lncRNAs) have been defined as transcripts longer than 200 nucleotides, which lack significant protein coding potential and possess critical roles in diverse cellular processes. Long non-coding RNAs ... -
Building Pyridinium Molecular Wires as Axial Ligands for Tuning the Electrocatalytic Activity of Iron Phthalocyanines for the Oxygen Reduction Reaction
(AMER CHEMICAL SOC, 2018)We have been able to"tune"the electrocatalytic activity of iron phthalocyanine (FePc) and iron hexadodeca-chlorophthalocyanine (16(Cl)FePc) for the oxygen reduction reaction (ORR) by manipulating the"pull effect"of pyridinium ... -
Intestinal epithelial cell-specific RAR alpha depletion results in aberrant epithelial cell homeostasis and underdeveloped immune system
(NATURE PUBLISHING GROUP, 2018)Retinoic acid (RA), a dietary vitamin A metabolite, is crucial in maintaining intestinal homeostasis. RA acts on intestinal leukocytes to modulate their lineage commitment and function. Although the role of RA has been ... -
Fungal Planet description sheets: 785-867
(RIJKSHERBARIUM, 2018)Novel species of fungi described in this study include those from various countries as follows: Angola, Gnomoniopsis angolensis and Pseudopithomyces angolensis on unknown host plants. Australia, Dothiora cotymbiae on ... -
Genome-wide circulating microRNA expression profiling reveals potential biomarkers for amyotrophic lateral sclerosis
(ELSEVIER SCIENCE INC, 2018)The occurrence of mutations of TDP-43, FUS, and C9ORF72 in amyotrophic lateral sclerosis (ALS) suggests pathogenic alterations to RNA metabolism and specifically to microRNA (miRNA) biology. Moreover, several ALS-related ... -
Genomic positional conservation identifies topological anchor point RNAs linked to developmental loci
(BMC, 2018)Background: The mammalian genome is transcribed into large numbers of long noncoding RNAs (lncRNAs), but the definition of functional lncRNA groups has proven difficult, partly due to their low sequence conservation and ... -
Synthesis and properties of new aromatic polyimides containing spirocyclic structures
(ELSEVIER SCI LTD, 2018)The synthesis of three novel aromatic polyimides (PIs) containing spiro units is described. These PIs are soluble at room temperature in most common organic solvents, facilitating their processability. Additionally, they ... -
A regulatory RNA is involved in RNA duplex formation and biofilm regulation in Sulfolobus acidocaldarius
(OXFORD UNIV PRESS, 2018)Non-coding RNAs (ncRNA) are involved in essential biological processes in all three domains of life. The regulatory potential of ncRNAs in Archaea is, however, not fully explored. In this study, RNA-seq analyses identified ... -
A scoping systematic review of social stressors and various measures of telomere length across the life course
(ELSEVIER IRELAND LTD, 2018)Numerous studies examine the relationship between social stressors and telomere length (TL). Beyond considering methods and major findings, this scoping systematic review takes a novel approach as it groups studies according ... -
Surface electromyographic amplitude does not identify differences in neural drive to synergistic muscles
(AMER PHYSIOLOGICAL SOC, 2018)Surface electromyographic (EMG) signal amplitude is typically used to compare the neural drive to muscles. We experimentally investigated this association by studying the motor unit (MU) behavior and action potentials in ... -
ER Proteostasis Control of Neuronal Physiology and Synaptic Function
(ELSEVIER SCIENCE LONDON, 2018)Neuronal proteostasis is maintained by the dynamic integration of different processes that regulate the synthesis, folding, quality control, and localization of proteins. The endoplasmic reticulum (ER) serves as a fundamental ... -
Nutrient Transport Driven by Microbial Active Carpets
(AMER PHYSICAL SOC, 2018)We demonstrate that active carpets of bacteria or self-propelled colloids generate coherent flows towards the substrate, and propose that these currents provide efficient pathways to replenish nutrients that feed back into ...