The Braden Scale for Predicting Pressure Sore Risk
Theodore J. and Mary E. Trumble Professor of Aging Research and Director, Center on Aging University of Texas Health Science Center
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Ligand Effect on the Growth and the Digestion of Co Nanocrystals
The reaction product of cobalt carbonyl decomposition depends on the concentration of the oleic acid ligand. With a low concentration of ligand, nanocrystals nucleate and grow to large ferromagnetic particles through the process of Ostwald ripening and coalescence coarsening. With a high concentration of ligand, stabl…
Study of a dissipative particle dynamics based approach for modeling suspensions
In this paper, a dissipative particle dynamics (DPD) based approach for modeling suspensions is examined. A series of tests is applied comparing simulation results to well established theoretical predictions. The model recovers the dilute limit intrinsic viscosity prediction of Einstein and provides reasonable estimat…
Water-Soluble Cationic Poly(p-phenyleneethynylene)s (PPEs): Effects of Acidity and Ionic Strength on Optical Behavior
Three cationic PPEs P1 ‘− P3 ‘ were obtained through quaternization of their neutral polymers, of which all side chains were respectively featured with a tertiary amino group ( P1 ), an alternative tertiary amino and tri(ethylene glycol)methyl ether group ( P2 ), and an alternative tertiary amino and dodecyloxy group…
Anomalous heat conduction and anomalous diffusion in nonlinear lattices, single walled nanotubes, and billiard gas channels
We study anomalous heat conduction and anomalous diffusion in low-dimensional systems ranging from nonlinear lattices, single walled carbon nanotubes, to billiard gas channels. We find that in all discussed systems, the anomalous heat conductivity can be connected with the anomalous diffusion, namely, if energy diffus…
Relaxation Dynamics in Glycerol−Water Mixtures: I. Glycerol-Rich Mixtures
We discuss the relaxation dynamics of glycerol-water mixtures, as studied by dielectric spectroscopy in the frequency range from 1 Hz to 250 MHz and at temperatures between 173 and 323 K. The experimental results obtained for the glycerol-rich mixtures suggest that the main dielectric relaxation process, as well as th…
Inhibition of Penicillium commune by Edible Whey Protein Films Incorporating Lactoferrin, Lacto‐ferrin Hydrolysate, and Lactoperoxidase Systems
ABSTRACT: Effects of lactoferrin (LF), lactoferrin hydrolysate (LFH), and lactoperoxidase systems (LPOS), both directly and incorporated into edible whey protein isolate (WPI) films, on the inhibition of Penicillium commune were studied. Mechanical, oxygen‐barrier, and color properties of WPI films with and without LP…
Liquid-Core Capsules via Interfacial Polymerization: A Free-Radical Analogy of the Nylon Rope Trick
Liquid-core capsules have wide-ranging applications in the high-efficiency encapsulation and controlled release of drugs, dyes, enzymes, and other substrates. Their great utility has driven the rapid development of various preparation techniques. However, there remains no convenient technique for the preparation of su…
Investigation of the Crystallization Process in 2 nm CdSe Quantum Dots
Investigation of the growth of CdSe nanocrystals ( approximately 160 atoms) to the uniquely stable size of 2 nm allows the monitoring of the crystallization process in semiconductor quantum dots. By using a combination of optical techniques, high-resolution transmission electron microscopy (HRTEM), and powder X-ray di…
Crystal Structure and Interaction Dependence of the Crystal-Melt Interfacial Free Energy
We examine via molecular simulation the dependence of the crystal-melt interfacial free energy $\ensuremath{\gamma}$ on molecular interaction and crystal structure (fcc vs bcc) for systems interacting with inverse-power repulsive potentials, $u(r)=ϵ(\ensuremath{\sigma}/r{)}^{n}$, $6\ensuremath{\le}n\ensuremath{\le}100…
Reconstitution and Biochemical Characterization of a New Pyridoxal-5‘-Phosphate Biosynthetic Pathway
The substrates for Bacillus subtilis PLP synthase (YaaD and YaaE) are identified, and the first reconstitution of PLP biosynthesis using this pathway is described. Three partial reactions catalyzed by YaaD are also identified.
Successful treatment of three cases of nephrogenic fibrosing dermopathy with extracorporeal photopheresis
BACKGROUND: Nephrogenic fibrosing dermopathy (NFD) is a recently described cutaneous fibrosing disorder associated with renal dysfunction. Patients present with thickened skin or oedematous skin with indurated papules and plaques involving extremities and trunk, and often associated with disabling contracture of the a…
Comparison of ZrB2‐ZrC‐SiC Composites Fabricated by Spark Plasma Sintering and Hot‐Pressing
Ultra‐high temperature ceramics (UHTCs) exhibit a number of properties (thermal and chemical stability, high strength and hardness, ablation/oxidation and thermal shock resistance) for sustained use in the extreme environments experienced by re‐entry space vehicles. The spark plasma sintering (SPS) was considered as a…
Microbial Kinetic Controls on Calcite Morphology in Supersaturated Solutions
Abstract Recognizing microbial imprints in the morphology of calcium carbonate minerals that form in very supersaturated solutions containing a high level of dissolved inorganic carbon (DIC) is challenging. To better define criteria for this purpose, we have analyzed the influence of sulfate-reducing bacterium Desulfo…
In-situ hot pressing/solid-liquid reaction synthesis of bulk Cr2AlC
Single-phase bulk Cr2AlC, a non-Ti-containing carbide with superior expected properties, was successfully fabricated by in-situ hot pressing/solid-liquid reaction process. The reaction process was investigated using differential scanning calorimetry. The products were characterized using X-ray diffraction and scanning…
Influence of homologous phasins (PhaP) on PHA accumulation and regulation of their expression by the transcriptional repressor PhaR in Ralstonia eutropha H16
Phasins play an important role in the formation of poly(3-hydroxybutyrate) [poly(3HB)] granules and affect their size. Recently, three homologues of the phasin protein PhaP1 were identified in Ralstonia eutropha strain H16. The functions of PhaP2, PhaP3 and PhaP4 were examined by analysis of R. eutropha H16 deletion s…
Structural, magnetic, electronic, and spin transport properties of epitaxial Fe 3 Si ∕ GaAs ( 001 )
We report experimental results on the structural, magnetic, electronic, and spin transport properties of a $21\phantom{\rule{0.3em}{0ex}}\mathrm{nm}$ ${\mathrm{Fe}}_{3}\mathrm{Si}∕\mathrm{GaAs}(001)$ heterostructure epitaxially grown by coevaporation. High-resolution x-ray diffraction shows an almost stoichiometric fi…
Architectural Control of Hierarchical Nanobelt Superstructures in Catanionic Reverse Micelles
Abstract BaXO 4 (X = Mo, W) nanobelts and a variety of hierarchical superstructures assembled from the nanobelts have been synthesized in a catanionic reverse‐micelle system. The effects of various factors, such as the mixing ratio ( r ) between the anionic and cationic surfactants, the temperature, and the presence o…
In Situ One-Pot Synthesis of 1-Dimensional Transition Metal Oxide Nanocrystals
One-dimensional colloidal metal oxide nanocrystals are of great importance in materials chemistry, but reports on these materials are rare due to lack of well-defined synthetic protocols. In this paper, we present a general and highly effective one-pot synthetic protocol to produce 1-dimensional nanostructures of tran…
Facile Modification of Collagen Directed by Collagen Mimetic Peptides
Recent widespread interest in the development of engineered tissue and organ replacement therapies has prompted demand for new approaches to immobilize exogenous components to natural collagen. Chemical coupling of synthetic moieties to amino acid side chains has been commonly practiced for such purposes; however, suc…