Materials Literature
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Herein we present the synthesis and full characterization of the water-soluble [1,4-bis(α,β-galactopyranos-6-yl)phthalocyaninato]zinc(II) (8). For a cross-condensation with phthalonitrile in presence of zinc bromide, bisglycosylated phthalonitrile (5) has been synthesized by nucleophilic displacement of triflyl groups…
Ribonuclease from Bacillus intermedius (binase) is a small basic protein with antitumour activity. The three-dimensional structure of the binase mutant form Glu43Ala/Phe81Ala was determined at 1.98 Å resolution and its functional properties, such as the kinetic parameters characterizing the hydrolysis of polyinosinic…
The focus of this paper is on improving the modeling of dry fabric-based systems widely used in propulsion engine containment systems. Simulations of fabrics under impact using finite elements (FEs) provide valuable insight into the mechanics of fabric behavior and its energy absorption characteristics. In this model,…
In order to promote a better understanding of failure mechanisms of high-burnup pressurized water reactor (PWR) fuels under reactivity-initiated accident (RIA) conditions, stress biaxiality in cladding has been estimated for the pellet-cladding (PC) mechanical interaction (PCMI) phase. The estimation was based on an a…
Millable polyurethane (MPU) rubber nanocomposites were prepared on a two-roll mill and molded on a compression molding machine. The amount of loading of Mg(OH) 2 nanoparticles ( nMg(OH) 2 ) was from 0.5 to 2.5 wt% followed by the addition of dicumyl peroxide (as a curing agent). The compounded matter was subjected to…
Lake Ohrid is an important biodiversity hotspot, including diatom diversity and endemism. Numerous, putatively endemic diatom species have been described from the lake, alongside reports of relict taxa otherwise known only as fossils from European Neogene deposits. Diploneis Ehrenberg ex Cleve is considered to be one…
Stern mit Hirn: Eine neuartige supramolekulare Architektur wurde aus einem sternförmigen achtarmigen Polyethylenglycol mit Adamantyl-Endgruppen und einem sternförmigen Poly(N-isopropylacrylamid) mit β-Cyclodextrin-Kern durch Einschlusskomplexierung erhalten. Die Stern-Stern-Supramoleküle bilden wiederum temperaturabhä…
The two-step freezing and melting of the field-induced ferroelectric order in PbMg1/3Nb2/3O3 (PMN) and (PbMg1/3Nb2/3O3)0.88(PbTiO3)0.12 (PMN-PT) is investigated. In PMN-PT, direct microscopic images show that both steps occur in the same spatial regions. The higher temperature freezing corresponds to the higher temper…
The electromagnetic field of a point charge moving in a “wire metamaterial” parallel to the wires is investigated. The metamaterial under consideration is a periodic structure of perfect conductors with a dielectric or magnetic coating. The spacing of the structure is assumed to be much less than the typ…
Abstract A total of six washed French and Algerian kaolins were studied. Kaolinite, halloysite, muscovite, feldspars, anatase, rutile, gibbsite, goethite, and todorokite were present. The thermal behavior of the samples was studied and the transformation heats were determined and quantified by differential thermal ana…
We report high-sensitivity SrTiO(3) photoconductive detectors with multiple photoelectric cells connected in parallel. The photocurrent of the detectors increases significantly with an increase of the cell number. The photocurrent responsivity of the detector with three cells can reach 237 mA/W at 10 V bias under illu…
Sn doped ZnO nanostructures deposited on Si substrate with (100) orientation by spray pyrolysis method at temperature 450 °C. Sn/Zn atomic ratio varies from 0% to 5%. The scanning electron microscope measurements showed that size of particles reduce with increasing the doping concentration. The X-ray diffraction analy…
ABSTRACT Magnetic nanoparticles have continued to gather the interest of researchers due to the unique physical properties of materials found at this size scale. Herein, the production of composite magnetic fibers composed of iron oxide nanoparticles suspended in alginate is described. These materials were produced vi…
Some of the most important advances in the life sciences have come from transitioning to thinking of materials and their properties on the nanoscale rather than the macro or even microscale. Improvements in imaging technology have allowed us to see nanofeatures that directly impact chemical and mechanical properties o…
Mid-frequency waviness and subsurface crack are two fundamental factors that damage KH(2)PO(4) (KDP) crystal processed by ultraprecise fly cutting. In this paper, the motif theory and the Fourier model method are used to analyze the influence of the two factors on the laser-induced damage threshold (LIDT) of KDP. Rese…
The effect of external strain on the evolution of magnetic multi-vortices in nanoscale ferromagnetic platelets is investigated by a phase field model that explicitly includes the coupling between the magnetization and deformation. Phase field simulations show that a compressive strain makes the magnetic vortex-antivor…
The samples of luminous fiber with different colors have been prepared by adding the fiber-forming polymer PET chips as base materials and SrAl 2 O 4 : Eu 2+ , Dy 3+ luminescent materials. The phase composition, afterglow decay and thermoluminescent characteristics of the fiber were measured by X-ray diffraction (XRD)…
Abstract This paper reports the synthesis and characterization of CeO 2 nanoparticles via a simple and cost-effective co-precipitation method using cerium (III) nitrate hexahydrate, ammonium carbonate, cetyltrimethylammonium bromide (CTAB) and polyvinyl pyrrolidone (PVP) as the starting chemicals. The precursor was ca…
We describe a simple, one-pot, silver-assisted synthesis of branched gold nanoparticles (GNPs) (nanostars) using Ag NO3 and the mild reducing agent, ascorbic acid, in the presence of a lyotropic liquid crystal (LLC) template formed by Triton X-100 in water either in the hexagonal phase or the micellar phase above the…
Diglycidyl ether of bisphenol A (DGEBA)/fluoro‐terminated hyperbranched poly(phenylene oxide) (FHPPO) composites with improved mechanical and dielectric performances were prepared by blending a FHPPO with DGEBA. The low‐polarity building blocks, abundant fluorinated terminal groups, and the inherent free volume brough…