Search Within
Applied Filters:
Palabra clave:'642991'
Showing 1-30 of 270 resultados for "


" within Papeles
José M Estrada et al.
Water research, 47(13), 4312-4321 (2013-06-15)
Clogging due to biomass accumulation and the loss of structural stability of the packing media are common operational drawbacks of standard gas biofiltration inherent to the traditional biofilter design, which result in prohibitive pressure drop buildups and media channeling. In
Markus Feulner et al.
Sensors (Basel, Switzerland), 15(11), 28796-28806 (2015-11-19)
Soot sensors are required for on-board diagnostics (OBD) of automotive diesel particulate filters (DPF) to detect filter failures. Widely used for this purpose are conductometric sensors, measuring an electrical current or resistance between two electrodes. Soot particles deposit on the
Bum-Young Noh et al.
Journal of nanoscience and nanotechnology, 13(5), 3335-3340 (2013-07-19)
Surface plasmon (SP)-enhanced light emission mechanism has been investigated for the Ag-coated ZnO/Al2O3 core/shell nanorods (NRs). Structural characterizations showed that the ZnO NRs were covered by conformal Al2O3 layer and coated by Ag nanoparticles (NPs). The optical studies by photoluminescence
Christie Ying Kei Lung et al.
Journal of the mechanical behavior of biomedical materials, 41, 168-176 (2014-12-03)
To evaluate the in vitro effect of titanium surface treatment by a polydimethylsiloxane coating on the shear bond strength of a resin composite cement to titanium. The titanium samples (40×30mm) were divided into 4 groups (n=12). A control group was
Esra Can Say et al.
Dental materials journal, 33(3), 332-342 (2014-03-07)
The purpose of this study was to investigate surface roughness (Ra) and morphology of supra-nanofilled [Estelite Omega (EO), Estelite ∑ Quick (EQ)], micro-hybrid [Esthet.X HD (EHD), G-aenial (GAE)] and nano-hybrid [Clearfil Majesty Posterior (CMP), Charisma Diamond (CD), Beautifil II (BII)]
Olga Michalak et al.
Molecules (Basel, Switzerland), 20(6), 10004-10031 (2015-06-04)
A physicochemical characterization of the process-related impurities associated with the synthesis of pemetrexed disodium was performed. The possibility of pemetrexed impurities forming has been mentioned in literature, but no study on their structure has been published yet. This paper describes
Toru Ogawa et al.
Drug development and industrial pharmacy, 41(2), 315-321 (2013-11-23)
Inorganic extractables from glass vials may cause particle formation in the drug solution. In this study, the ability of eluting Al ion from borosilicate glass vials, and tendencies of precipitation containing Al were investigated using various pHs of phosphate, citrate
Telma C Santos et al.
Biochimica et biophysica acta, 1847(10), 1113-1118 (2015-06-14)
The monoheme c-type cytochrome PccH from Geobacter sulfurreducens, involved in the pathway of current-consumption in biofilms, was electrochemically characterized in detail. Cyclic voltammetry was used to determine the kinetics and thermodynamics properties of PccH redox behavior. Entropy, enthalpy and Gibbs
Luis E Gimenez et al.
Molecular pharmacology, 87(6), 954-964 (2015-03-19)
Salmeterol is a long-acting β2-adrenergic receptor (β2AR) agonist that is widely used as a bronchodilator for the treatment of persistent asthma and chronic obstructive pulmonary disease in conjunction with steroids. Previous studies demonstrated that salmeterol showed weak efficacy for activation
G P J van Hout et al.
Basic research in cardiology, 110(6), 58-58 (2015-10-16)
Myocardial infarction (MI) induces an inflammatory response in which neutrophils fulfill a prominent role. Mean neutrophil volume (MNV) represents the average size of the circulating neutrophil population. Our goal was to determine the effect of MI on MNV and investigate
Graziela Ribeiro Batista et al.
The journal of adhesive dentistry, 17(5), 421-426 (2015-11-04)
To evaluate the influence of different surface treatments on roughness and bond strength of composite repairs. 120 truncated conical specimens were prepared with composite Grandio SO (VOCO) and submitted to 5000 thermal cycles. Specimens were divided into 12 groups (n
Sai Fang et al.
Organic & biomolecular chemistry, 13(16), 4714-4726 (2015-03-25)
Based on the scaffolds of caffeic acid phenethyl ester (CAPE) as well as bioactive lactone-containing compounds, 6-acrylic phenethyl ester-2-pyranone derivatives were synthesized and evaluated against five tumor cell lines (HeLa, C6, MCF-7, A549, and HSC-2). Most of the new derivatives
Size-controlled synthesis of alumina nanoparticles from aluminum alkoxides
Park YK, et al.
Materials Research Bulletin, 40(9), 1506-1512 (2005)
Alumina and zirconia acrylate nanocomposites coatings for wood flooring: Photocalorimetric characterization
Landry V, et al.
Progress in Organic Coatings, 61(1), 76-82 (2008)
N N Adhapure et al.
Prikladnaia biokhimiia i mikrobiologiia, 49(3), 279-284 (2013-07-26)
With the current rapid developments in technology, there is an increasing accumulation of outdated electronic equipment. The primary reason for this increase is the low rate of recycling due to the complex nature of such waste. Bioleaching offers a promising
Bulent Uludag et al.
The journal of adhesive dentistry, 16(6), 523-529 (2014-09-30)
To evaluate the microleakage of Cerec 3, IPS e.max Press, and Turkom-Cera inlays cemented with three self-adhesive resin cements. Ninety standardized class III MOD cavities were prepared in intact human mandibular third molars. Ceramic inlays were fabricated according to the
Rui-Tang Guo et al.
Environmental technology, 35(13-16), 1766-1772 (2014-06-25)
CeO2-CuO/Al2O3 catalysts were prepared by three different methods and their activities for selective catalytic reduction (SCR) of NO with NH3 were investigated. As can be seen from the experimental results, the catalyst prepared by the single-step sol-gel (SG) method showed
Luciana S Rocha et al.
Analytical chemistry, 87(12), 6071-6078 (2015-05-21)
Ex situ plated Bi film electrodes (Bi-FE) have been employed, for the first time, to measure the free concentration of Pb(II) in aqueous solutions using absence of gradients and Nernstian equilibrium stripping (AGNES) with stripping chronopotentiometry (SCP) quantification. The amount
Colin J Ingham et al.
Biotechnology advances, 30(5), 1089-1099 (2011-08-23)
Porous aluminum oxide (PAO) is a ceramic formed by an anodization process of pure aluminum that enables the controllable assembly of exceptionally dense and regular nanopores in a planar membrane. As a consequence, PAO has a high porosity, nanopores with
Hitomi Uchimoto et al.
Chemical & pharmaceutical bulletin, 63(3), 200-209 (2015-03-12)
Reuse of chiral ruthenium catalyst in catalytic asymmetric transfer hydrogenation (CATH) has attracted attention from economic and environmental viewpoints, and reactions using ionic liquids (ILs) as solvent are recognized as one of the most useful methods for reuse of the
Zhao-Dong Liu et al.
Colloids and surfaces. B, Biointerfaces, 110, 289-295 (2013-06-05)
We investigated the adhesion of Escherichia coli to α-Fe2O3 and γ-Al2O3 and the effects of adhesion on the surface properties of the oxides in batch experiments, where we conducted potentiometric titration, zeta potential measurements, and FTIR spectroscopy. The adhesion isotherms
Kevin A Thorn et al.
PloS one, 10(11), e0142452-e0142452 (2015-11-12)
Despite recent advances in spectroscopic techniques, there is uncertainty regarding the nature of the carbonyl groups in the asphaltene and resin fractions of crude oil, information necessary for an understanding of the physical properties and environmental fate of these materials.
Tomomi Sato et al.
Molecular pharmacology, 88(6), 1024-1034 (2015-09-20)
Comparisons between structures of the β1-adrenergic receptor (AR) bound to either agonists, partial agonists, or weak partial agonists led to the proposal that rotamer changes of Ser(5.46), coupled to a contraction of the binding pocket, are sufficient to increase the
E A Peralta et al.
Nature, 503(7474), 91-94 (2013-10-01)
The enormous size and cost of current state-of-the-art accelerators based on conventional radio-frequency technology has spawned great interest in the development of new acceleration concepts that are more compact and economical. Micro-fabricated dielectric laser accelerators (DLAs) are an attractive approach
Dae-Hee Kim et al.
Journal of nanoscience and nanotechnology, 13(5), 3564-3567 (2013-07-19)
The initial reaction of dimethylaluminum isopropoxide (Al(CH3)2OC3H7, DMAI) with a fully hydrogen-terminated Si (001) surface for aluminum oxide thin-film growth was investigated using density functional theory. Al-C and Al-O bonds of the adsorbed DMAI were easily broken to produce unimethylaluminum
Timothy M O'Shea et al.
Advanced healthcare materials, 4(12), 1802-1812 (2015-06-20)
Hydrogels with covalently incorporated trehalose are synthesized using thiol-ene Michael addition. Trehalose hydrogels afford prolonged stabilization and -controlled release of model enzymes in vitro and in vivo as well as preservation of protein stability under heat and -lyophilization stressors. Strong
Matteo Lorenzoni et al.
Langmuir : the ACS journal of surfaces and colloids, 31(42), 11630-11638 (2015-10-08)
The mechanical properties of several types of block copolymer (BCP) thin films have been investigated using PeakForce quantitative nanomechanical mapping. The samples consisted of polystyrene/poly(methylmethacrylate) (PS/PMMA)-based BCP thin films with different pitches both randomly oriented and self-assembled. The measured films
Mengning Liang et al.
IUCrJ, 1(Pt 3), 172-178 (2014-07-31)
Colloidal gels have unique properties due to a complex microstructure which forms into an extended network. Although the bulk properties of colloidal gels have been studied, there has been difficulty correlating those properties with individual colloidal dynamics on the microscale
Ying Duan et al.
Journal of water and health, 12(4), 715-721 (2014-12-05)
The study describes the removal of fluoride from drinking water using activated alumina (AA). AA was modified with H2SO4, FeCl3 and a combination of the two to enhance fluoride adsorption. The AA adsorbents were characterized using Brunauer-Emmett-Teller surface area analysis
Sunandan Pakrashi et al.
Aquatic toxicology (Amsterdam, Netherlands), 152, 74-81 (2014-04-17)
The transfer of nanoparticles through the food chain can lead to bioaccumulation and biomagnification resulting in a long term negative impact on the ecosystem functions. The primary objective of this study was evaluation of aluminium oxide nanoparticles transfer from primary
Página 1 de 9
Página 1 de 9