Materials Literature
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Possibility of improving the adhesion at graphene/Al interfaces has been investigated by predicting interactions between monolayer graphene and Al (111) plane using first principles simulations. For the property modifications, either Ni atoms were adsorbed on one side of the graphene or the graphene is substitutionall…
Treatment of the chlorides (L2,6‐iPr2Ph)2LnCl (L2,6‐iPr2Ph = [(2,6‐iPr2C6H3)NC(Me)CHC(Me)N(C6H5)]−) with 1 equiv. of NaNH(2,6‐iPr2C6H3) afforded the monoamides (L2,6‐iPr2Ph)2LnNH(2,6‐iPr2C6H3) (Ln = Y (1), Yb (2)) in good yields. Anhydrous LnCl3 reacted with 2 equiv. of NaL2,6‐iPr2Ph in THF, followed by treatment with…
Natural and synthetic polymers, in particular those that are conductive, are of great interest in the field of tissue engineering and the pursuit of biomimetic extracellular matrix (ECM) structures for adhesion, proliferation, and differentiation of cells. In the present study, natural chitin and conductive polyanilin…
Recent research has suggested that H dissolved in an Al melt could diffuse into double oxide films (bifilms), increasing their size and forming oxide related hydrogen containing porosity, which was found to decrease the Weibull moduli of the tensile properties of castings. In this work, the Weibull moduli of the tensi…
A single-step thermal decomposition of ferrocene [(C5H5)2Fe] using nonisothermal thermogravimetry (TG) has been studied using single- as well as multiple-heating rate programs. Both mechanistic and nonmechanistic methods have been used to analyze the TG data to estimate the kinetic parameters for the solid state react…
The Fe3O4/SiO2/CeO2 core-shell magnetic has been successfully synthesized by three steps of hydrothermal, sonochemical and homogeneous precipitation by coating CeO2 nanoparticles onto Fe3O4/SiO2 magnetic core. The prepared samples were characterized by X-ray diffraction (XRD), Field-emission scanning electron microsco…
In cell and molecular biology, double-stranded circular DNA constructs, known as plasmids, are extensively used to express a gene of interest. These gene expression systems rely on a specific promoter region to drive the transcription of genes either constitutively (i.e., in a continually "ON" state) or conditionally…
Electrospun chitosan (CTS) nanofibers have been well known for use as a wound dressing in the biomedical field. Nevertheless, fatal bacterial infections are still a serious problem when CTS nanofibers are used for wound treatment. In this study, we designed a novel wound dressing based on blending the chitosan with po…
The advent of nanoparticle DDSs (drug delivery systems, nano-DDSs) is opening new pathways to understanding physiology and pathophysiology at the nanometer scale. A nano-DDS can be used to deliver higher local concentrations of drugs to a target region and magnify therapeutic effects. However, interstitial cells or fi…
Oral route is the most preferred route for administration of different drugs because it is regarded as safest, most convenient, and economical route. Fast disintegrating tablets are very popular nowadays as they get dissolved or facilely disintegrated in mouth within few seconds of administration without the need of w…
Im Rahmen des auf 3 Jahre angelegten EU-Projektes NEMESIS2+ (www.nemesis-project.eu) entwickelt das DLR gemeinsam mit 7 europäischen Projektpartnern einen Wasserstoffgenerator (50 Nm3/h) auf Basis von Diesel und Biodiesel. Im Rahmen der vorliegenden Bachelorarbeit wurde die H2-Erzeugung aus Diesel an einem einzelnen R…
Several methods are available for the detection of covarying positions from a multiple sequence alignment (MSA). If the MSA contains a large number of sequences, information about the proximities between residues derived from covariation maps can be sufficient to predict a protein fold. If the structure is already kno…
A Partir del Conocimiento Cientifico y las Tecnologias para la Produccion del Radioisotopo Mo-99 que en el Mundo Tienen la Potencialidad para Resolver los Deficit Proyectados de Radiofarmacos para Uso en Medicina Nuclear se Seleccionara una Estrategia de Desarrollo Tecnologico con Alianzas para la I+d con Coejecutores…
Mineralogy of the beryl-columbite pegmatites from Sejby, their geological seting and a degree of fractionation
En esta investigacion se presenta un estudio sobre la sintesis de membranas de un derivado de quitosano del tipo base de Schiff con benzaldehido y el entrecruzamiento del quitosano con 2,4-pentanodiona. Tanto el quitosano como sus derivados fueron caracterizados mediante FTIR y UV-vis, se observo una banda en 1620 cm-…
The article considers the problem of determining the moment of cracking in flexible reinforced concrete structures. It is shown that the stress at which cracks, significantly depend on the modulus of elasticity of concrete under tension, equal to the ratio of the elastic part of the deformation to the limit of elastic…
0.9PbSc0.5Nb0.5O3-0.1PbLu0.5Nb0.5O3ceramics were prepared by a solid-state mixed-oxide technique. The phase formation and microstructure were studied using X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The influences of compressive stress (0 – 1500 bar) applied parallel to the electric…
Se estudio la influencia del peso molecular en la formacion y cristalizacion de estereocomplejos basados en PLA. Para ello fueron preparadas mezclas equimolares de poli(l-acido lactico) (PLLA) y poli(d-acido lactico) (PDLA) en solucion. Las propiedades termicas fueron estudiadas por medio de calorimetria diferencial d…
Recombination rates at radiative defects in the hydrogenated amorphous silicon films prepared at various preparation conditions, estimated from intensities and characteristic lifetimes of defect photoluminescence, have been investigated. The temperature variations of the radiative recombination rate are discussed in t…
Se estudio la formacion de estereocomplejos a partir de homopolimeros y copolimeros multibloque (PLA)s/PBS para analizar la influencia del bloque flexible poli(butilen-succinato) (PBS) sobre la formacion, estructura y propiedades de dichos estereocomplejos. Los copolimeros LL 70 5.4 BS 30 7.4 y DL 70 6.1 BS 30 7.4 pre…