Materials Literature
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The introduction of microbubbles has significantly changed the field of ultrasound imaging, which previously lacked effective contrast agents compared with other fields of imaging such as computed tomography (CT) or magnetic resonance imaging (MRI), which use iodinated and gadolinium contrast agents, respectively [12,…
Abstract Streptomycin has been used to derive organic metal complexes (OMCs) after metallation with ZnCl2, CdCl2 and PbCl2 and characterized by elemental analysis, electronic and vibrational spectroscopy, 1H and 13C NMR, mass spectroscopy (time‐of‐flight MS), magnetic measurement, thermal decomposition analysis (TGA,…
Abstract The thermal and mechanical properties of a series of novel glycopolymer brushes with various degrees of polymerization of the backbone and various grafting densities are established. Modulated differential scanning calorimetry (MDSC) is found to be an effective tool for the characterization of the thermal beh…
Membranen mit Metall-organischen Gerüsten sind vielversprechend, um die Produktion von Biotreibstoffen zu verbessern. Y.-S. Li, W.-S. Yang et al. beschreiben in der Zuschrift auf S. 10 824 ff., dass in eine Polymermatrix eingebaute ZIF-8-Nanopartikel organischen Verbindungen bevorzugte Permeationswege bieten. Auf dies…
Best estimate codes have been used in the past thirty years for the design, licensing, and safety of NPP. Nevertheless, large efforts are necessary for the qualification and the assessment of such codes. The aim of this work is to study the main phenomena involved in the emergency spray cooling injection in a Swedish-…
Blends of isotactic polypropylene (iPP) and ethylene-octene-copolymer (EOC), having different proportions, were prepared in a co-rotating twin screw extruder. The tensile and flexural properties of iPP-EOC blends containing up to 20% EOC content were determined. Impact strength of blend containing 5% EOC increased dra…
Polarity-dependent homo-epitaxy on (0001)-Zn and (000)-O surfaces of cleaved ZnO microwires was investigated by in situgrowth in ESEM and DFT simulations. ZnO monomers adsorption, adatoms desorption and chemisorption were simulated to understand the explicit mechanism.
The dinoflagellate genus Pyrocystis includes a small number of marine species, which spend the majority of their life cycles as nonmotile cells within a carbohydrate sheath, and which are found ubiquitously throughout the world's oceans. The biochemistry of this model dinoflagellate genus has been widely studied due t…
Using studies of the temperature dependence of the acoustic wave velocity at high hydrostatic pressures, a tricritical point where second-order phase transitions change to first-order ones was experimentally revealed on the pressure–temperature phase diagram of Sn2P2S6 crystals. The behavior of the acoustic wave veloc…
(Cu42Zr42Al8Ag8)100− x Si x (x = 0 ∼ 1) amorphous alloy rods of 2–6 mm diameter were prepared by Cu-mold drop casting. The thermal properties, microstructure evolution, and mechanical properties were studied by differential scanning calorimetry (DSC), X-ray diffractometry (XRD), transmission electron microscopy (TEM),…
Abstract The optical properties of mechanochromic materials change under mechanical stress. Segmented polyurethanes are elastomers composed of amorphous, saturated chain soft segments, and rigid pi‐conjugated hard domains. Within aggregates of hard domains pi–pi interactions may form and result in perturbation of the…
Abstract High‐density polyethylene (HDPE) is the polymer most used for geomembranes, and one of the tests to determine its applicability is its long term resistance to oxidation. In this sense, this work focuses on the study of the chemical and morphological changes that PE films may experiment when subjected to diges…
The primary objective of the research was to evaluate the rheology and thermal properties of silylated apophyllite–filled epoxy nanocomposite. Several n‐octyldimethylsiloxy‐apophyllite with different grafting degrees were synthesized by controlling the ratio of the apophyllite and n‐octyldimethylchlorosilane. The ther…
By replacing common buffers with anisotropic liquids in microfluidics, an enhanced range of optofluidic functionalities is enabled. Such an anisotropic liquid is nematic liquid crystals (NLC), which exhibits optical properties that can be tuned by optical, electrical or mechanical fields, such as flow. We demonstrate…
Finnis–Sinclair N -body potentials for alloy systems comprised of W and generic materials having various degrees of lattice misfit or modulus misfit to W are developed for subsequent studies of the influence of these precipitate–matrix property misfits on the interaction between precipitates and lattice defects or dis…
The current demand of hydrated lime [Ca(OH)2] worldwide has necessitated investigation into kinetics of calcinations of some large commercial deposits of limestone in Nigeria. The study is aimed at finding kinetic parameters for the purpose of energy saving, lime kiln design, modeling and simulation of lime kiln. In t…
Abstract Studies on the morphologies and rheological characteristics of two styrene–butadiene–maleic anhydride block copolymers (SBMa) have been performed. The transmission electron microscopy micrographs show that the morphologies of SBMa change from matrix–island structure to co‐continuous structure. Curves for dyna…
We discuss the concept of infrared cloaking using nanosphere dispersed liquid crystal (NDLC) matematerial in cylindrical geometry for TM polarization. The system consists of six layers of NDLC with different values of ordinary refractive index. Finite element calculations (COMSOL Multiphysics) show that scattering fro…
Eine vielseitige Methode zum Aufbau nanoskaliger π-konjugierter Makrocyclen mithilfe der Vernier-Templatkontrolle beruht auf dem Einsatz linearer vierkerniger ZnII-Porphyrinkomplexe und eines leicht zugänglichen Sechs-Zentren-Templats, die über eine begrenzte Zahl von Syntheseschritten zur Bildung und Isolierung eines…
Two new linear trinuclear complexes, [Co(NiL1)2(SCN)2] (1) and [Co(NiL2)2(H2O)2](ClO4)2 · 2C2H5OH (2), have been prepared by using Co(ClO4)2 · 6H2O and two macrocyclic complex ligands NiL1 and NiL2. L1 and L2 are the doubly deprotonated forms of dimethyl 5,6,7,8,15,16-hexahydro-6,7-dioxodibenzo[1,4,8,11]tetraazabicycl…