Materials Literature
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Magnetization measurements in superconductor/ferromagnet $\mathrm{Nb}∕\mathrm{Co}$ superlattices show a complex behavior as a function of temperature, applied field, and sample history. Based on a simple model, it is shown that this behavior is due to an interplay between the superconductor magnetization temperature d…
Using a spin-temperature approach, we describe a scheme of adiabatic cross polarization, based on demagnetization/remagnetization, when the Zeeman order of abundant nuclei in the laboratory frame is first adiabatically converted into the dipolar order, and then, into the Zeeman order of rare nuclei. The scheme, implem…
We present the synthesis and characterization of a family of partially protected block copolymers and their precursors synthesized by means of nitroxide mediated radical polymerization (NMRP) and a sequence of quantitative and orthogonal polymer analogous reactions. The target materials consist of an unprotected 4-hyd…
Membranes made from three specifically deuterium-labeled ether-linked bolalipids, [1',1',20',20'-2H4]C20BAS-PC, [2',2',19',19'-2H4]C20BAS-PC, or [10',11'-2H2]C20BAS-PC, were analyzed by 2H NMR spectroscopy. Unlike more common monopolar, ester-linked phospholipids, C20BAS-PC exhibits a high degree of orientational orde…
Co-doped titanate nanorods are synthesized via a one-step hydrothermal reaction. Calcining the titanate nanorods at 700 °C for 2 h in an argon atmosphere yields Co-doped anatase (TiO 2 ) nanorods. The calcined nanorods are straight, with lengths over 2 μm and diameters between 80 and 120 nm as measured by transmission…
Ichthyoses are a heterogenous group of keratinization disorders, which are often associated with hypohidrosis. We report a 42-year-old man with generalized thick brownish scales and severe thermodysregulation leading to heat intolerance. Based on clinical, histological and genetic findings, autosomal recessive lamella…
Scanning tunneling microscopy (STM) and scanning force microscopy (SFM) have been used to study ultrathin films of a kind of nanographene, hexa( p - n -dodecylphenyl)hexabenzocoronene (HBC-PhC 12 ), on a highly oriented pyrolitic graphite (HOPG) surface. An electrical field, applied parallel to the substrate surface d…
Water-dispersed magnetite nanoparticle synthesis from iron(II) chloride in dimethyl sulfoxide (DMSO)−water solution at different DMSO−water ratios in alkaline medium was reported. TEM and XRD results suggest a single-crystal formation with mean particle size in the range 4−27 nm. Magnetic nanoparticles are formed by t…
BACKGROUND/AIMS: Facial sagging becomes progressively noticeable with aging. Previously developed methods to study facial sagging measure the shape of sagging skin, evaluate skin properties such as elasticity or flexibility or visually score the degree of sagging using a photo scale. However, the practical use of thes…
The crystal structure of the periplasmic/extracellular endonuclease I from Vibrio salmonicida has been solved to 1.5 A resolution and, in comparison to the corresponding endonucleases from V. cholerae and V. vulnificus, serves as a model system for the investigation of the structural determinants involved in the tempe…
We consider a Heisenberg antiferromagnet on the Penrose tiling, a quasiperiodic system having an inhomogeneous N\'eel-ordered ground state. Spin wave energies and wave functions are studied in the linear spin wave approximation. A linear dispersion law is found at low energies, as in other bipartite antiferromagnets,…
BACKGROUND/PURPOSE: The surface of the skin is covered by intersecting grooves and ridges which produce characteristic skin surface patterns. It has been suggested that these folds provide a reserve of tissue, allowing the skin to stretch during normal muscle movements. More so, skin is anisotropic and under constant…
The results from reiterated docking experiments may be used to evaluate an empirical vibrational entropy of binding in ligand-protein complexes. We have tested several methods for evaluating the vibrational contribution to binding of 22 nucleotide analogues to the enzyme APS reductase. These include two cluster size m…
As a key regulator of mitosis, the Ser/Thr protein polo-like kinase-1 (Plk-1) is a well validated drug target in cancer therapy. In order to enable structure-guided drug design, determination of the crystal structure of the kinase domain of Plk-1 was attempted. Using a multi-parallel cloning and expression approach, a…
We propose an ultrahigh quality factor (Q) photonic crystal slab cavity created by the local modulation of the air hole radius in the waveguide. In the cavity, photons are confined between two mirror regions with larger air holes and the lifetime of photons is greatly enhanced by introducing tapered regions with linea…
Density functional theory (DFT) calculations have been used to investigate acetylene cyclotrimerization catalyzed by titanium and vanadium dioxides. The calculated results illustrate that the overall process is highly favorable at room temperature from both thermodynamic and kinetic points of view. The mechanism of C2…
Understanding the relationship between amino acid sequences and folding rates of proteins is an important task in computational and molecular biology. In this work, we have systematically analyzed the composition of amino acid residues for proteins with different ranges of folding rates. We observed that the polar res…
Photodissociation spectra were determined for Au(m)(+) . Ar(n) (m=7; n=0-3 and m=8,9; n=0,1) in the photon energy range of 2.14-3.02 eV. Experimental data were compared with predictions of dipole allowed transitions using time-dependent density functional theory (TDDFT) as applied to cluster structures from both DFT (…
The self-assembly of amphiphilic metallo-supramolecular A- b -B- b -A triblock copolymers containing a B block formed from a bisfunctional terpyridine monomer and an A block based on a monofunctional terpyridine polymer is described. These polymers have been prepared by a polycondensation approach, based on metal–liga…
Abstract A bimodal system has been developed by blending a high density and linear medium density ethylene‐hexene copolymers synthesized with chromium and metallocene catalysts, respectively. The resistance to slow crack growth examined by the Pennsylvania Edge‐Notch Tensile test (PENT test‐ASTM F1473) and the crack o…