[PDF] Top 20 Los movimientos sociales y la acción juvenil:: apuntes para un debate

... extensive review of conventional processes for removing heavy metals from wastewater such as chemical precipitation, flotation, membrane filtration, and ion ... See full document

... hydrocarbon membranes and nowadays are gaining a lot of interest as cheaper alternatives to ...hydrocarbon membranes are easily available, low cost and polar structure of the site allows the attachment of ... See full document

... (nanofiber) membranes can selectively absorb the oil up to 20 times the material’s weight in preference to water through a combination of superhydrophobicity and capillary action ... See full document

... the membranes; such as scanning electron microscopy (SEM), transmission electron microscopy (TEM), field emission scanning electron microscopy, atomic force microscopy (AFM), electron spin resonance, energy ... See full document

... 3.3. Electrospun Nanofibers Containing Metals: The antibacterial activity of silver, zinc, and copper has been widely tested against some ...cell membranes and the decay of the activity of certain ...in ... See full document

... The biocompatibility of the GT/PCL membranes was tested by seeding HaCaT cells on top of the membrane. HaCaT cells adhered to and spread on the membrane 1 day after seeding. Confocal microscope and SEM analyses ... See full document

... of electrospun nanofiber membranes were prepared by electrospinning technique and used as adsorbents surfaces to adsorb methylene blue dye from their aqueous solutions at different ... See full document

... the membrane fibers began to be absorbed, and fibroblasts were observed in the interstices of the fibers. Especially in the bFGF–PLGA group, these membranes were discernible and intimately associated with ... See full document

... or membranes for tissue engineering ...composite membranes and scaffolds by blending of a synthetic polymer, polylactic acid (PLA) and a natural polymer, poly(3-hydroxybutyrate- co-3-hydroxyvalerate) ... See full document

... imprinted membranes (MIMs) were produced via electrospinning technique with polyethylene terephthalate (PET) as the matrix ...nanofiber membranes were characterized by scanning electron microscopy ... See full document

... while PCL is a biodegradable synthetic polymer that is usually used for the fabrication of nanofibers due to its high mechanical strength[9], flexibility, biocompatibility, and biodegradability[10]. It is safe to be used ... See full document

... the electrospun and UV-cured gelatin fibres is shown in ...of electrospun nano fi bres were approximately 140 ± 45 nm and ...to electrospun webs, yet respective fi bre morphology was significantly ... See full document

... with electrospun gelatin/ polycaprolactone (GT/PCL) membranes, instead of pure chondrocytes, to evaluate the formation of cartilaginous ...GT/PCL membranes, seeded bone marrow stromal cell ... See full document

... hence electrospun nanofibrous scaffolds based drug delivery systems have been developed and analyzed for drug release kinetics ...from electrospun nanofi- brous scaffolds has shown linear dependence to the ... See full document

... first electrospun for 3 h, followed by coating with PAA nanofibers electrospun for 3 ...the membranes were peeled off from the aluminium foil and placed in a temperature fan forced oven (OTWMHD24, ... See full document

... the electrospun mats are generally characterised by very low crystallinity degree values, since the electrospinning process favours a rapid evaporation of the solvent and, thus, a fast solidification of stretched ... See full document

... many electrospun commodity polymer NFMs ...that electrospun polymer NFMs are a promising option as antimicrobial materials without using antimicrobial agents from commodity ... See full document

... be electrospun, for example, in Fig 1, when the poly(D,L-lactic acid) (PDLA) solution is 20 wt%, continuous nanofibre cannot be collected, on the other hand, when the polymer solution concentration is increased to ... See full document

... Results: The best FSCP/COS mass ratio for electrospinning was 2:1, and the nanofibers had small dimensions ranging from 50 to 100 nm. The NFM showed good antibacterial activities against Gram-positive Staphylococcus ... See full document

... typical electrospun membrane prepared with 16 wt% solution of P(VdF–HFP) in acetone/DMAc (7:3 ...fibrous membranes with porosities of 30–90% and pore size in the range of sub-micrometers to a few micrometers ... See full document