Materials Literature
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Most studies dealing with material properties of sandstones are based on a small data set. The present study utilizes petrographical and petrophysical data from 22 selected sandstones and ~300 sandstones from the literature to estimate/predict the material and weathering behaviour of characteristic sandstones. Composi…
The Rich-burn/Quick–mix/Lean-burn (RQL) combustor concept has been proposed to minimize the formation of oxides of nitrogen (NO x ) in gas turbine systems. The success of this low-NO x combustor strategy is dependent upon the links between the formation of NO x , inlet air preheat temperature, and the mixing of the je…
Two fullerene-terthiophene dyads without hexyl chains (3T-C₆₀) and with hexyl chains (3TH-C₆₀) on the terthiophene substituent are synthesized by 1,3-dipolar cycloaddition of corresponding azomethine ylides to C₆₀. The cyclic voltammetry studies indicate no apparent electronic communication between the terthiophene pe…
DNA is increasingly used as an important tool in programming the self-assembly of micrometer- and nanometer-scale particles. This is largely due to the highly specific thermoreversible interaction of cDNA strands, which, when placed on different particles, have been used to bind precise pairs in aggregates and crystal…
We demonstrate a microfluidic approach to the production of block copolymer vesicles via flow-directed self-assembly in a segmented gas-liquid device. Chemical conditions that favor spherical micelles in the bulk are found to yield a nearly pure population of vesicles on a chip-a transformation of two full morphologic…
The tautomerism of aromatic heterocycles is of great interest because it directly affects their chemical properties and biological function. The tautomerism of 2-pyridone, 6-chloro-2-pyridone, and 4-pyrimidinone have been examined in D(2)O using FTIR, two-dimensional IR (2D IR) spectroscopy and density functional theo…
The aggregation behavior of amphiphilic block copolymer polystyrene-b-poly(acrylic acid) (PS-b-PAA) at the air–water interface was investigated through surface pressure measurements (isotherms, compression–expansion hysteresis and compression relaxation experiments), Brewster Angle Microscopy (BAM) imaging and Atomic…
Six metal-organic frameworks, namely, [Cd(μ(2)-HDMPhIDC)(Py)](n) (H(3)DMPhIDC = 2-(3,4-dimethylphenyl)-1H-imidazole-4,5-dicarboxylic acid, Py = pyridine) (1), [Sr(μ(2)-HDMPhIDC)(H(2)O)](n) (2), {[M1(3)(μ(3)-DMPhIDC)(2)(H(2)O)(6)]·2H(2)O}(n) (M1 = Zn (3), or Mn (4)), [M2(μ(2)-HDMPhIDC)(H(2)O)(2)](n) (M2 = Mg (5), or Ca…
Nitrogen/sulfur co-doped anatase TiO2 nanocrystals with a high specific surface area and a high percentage of {001} facets were synthesized by a solvent-thermal process followed by the calcination with thiourea at an optimum heat treatment temperature. Under current experimental conditions, the optimum heat treatment…
Lipid asymmetry, the difference in inner and outer leaflet lipid composition, is an important feature of biomembranes. By utilizing our recently developed MβCD-catalyzed exchange method, the effect of lipid acyl chain structure upon the ability to form asymmetric membranes was investigated. Using this approach, SM was…
The formation mechanism and crystal growth of TiO 2 in high-temperature high-pressure fluids were studied using HCl or H 2 SO 4 as additives. In situ synchrotron radiation powder X-ray diffraction reveals that phase-pure rutile TiO 2 nanoparticles can be formed using HCl as additive, whereas phase-pure anatase TiO 2 i…
Arbitrary spatial distributions of the electric field of light are formed through the interference of individual wavenumber mode fields with appropriate amplitudes and phases, while the maximum wavenumber in the far field is limited by the wavelength of light. In contrast, localized surface plasmons (LSPs) possess the…
Novel, high "turn-on" Hg(2+) and O(2)(-) fluorescence behaviour (∼25-fold) with probes bearing [S(thi)N(py)] and [S(thi)N(py)N(py)] binding receptors, joined by oxidizable sulphides, may involve S-bound transient ROS species; such optical O(2)(-) behaviour operates moderately in neuroblastoma.
Many materials properties are conditioned by the relative arrangement of metal ions in the solid state. Supramolecular architectures such as helicates may be designed with controlled metal to metal spacing in their midst. However, shorter distances and more extensive electronic communication may be achieved between in…
BACKGROUND: Purine nucleotides exhibit various functions in cellular metabolism. Besides serving as building blocks for nucleic acid synthesis, they participate in signaling pathways and energy metabolism. Further, IMP and GMP represent industrially relevant biotechnological products used as flavor enhancing additives…
Silicon substrates have been a fascinating topic of fundamental and applied research for well over 50 years. They have attracted even more attention over the last couple of decades with advances in chemical functionalization that made oxide-free silicon surfaces a reality. Fundamentally new electronic properties and c…
A Blatter radical is oxidized to benzotriazin-7(H)-one which after amination and subsequent acyl- and aroylation gives N-(benzotriazin-6-yl)carboxamides that undergo ring closure with P(2)S(5) to afford the corresponding thiazolo[5',4':4,5]benzo[1,2-e][1,2,4]triazin-4-yls. These highly delocalized radicals are air sta…
Abstract Two common methods for recording absolute photoluminescence quantum yields using integrating spheres are discussed. These methods are developed from a theoretical standpoint, with a discussion of the assumptions made in each and their principle differences, and practical comparisons between the two are made u…
Abstract As CrO x catalysts supported on the SBA‐15 support (Cr/Si) are highly active, they represent potentially promising catalysts for the oxidative dehydrogenation of propane with CO 2 (ODHP). However, reduction of the active sites (Cr 3+ ) during the reaction is known to lead to severe deactivation. The findings…
Optical trapping techniques have been used to investigate fundamental biological processes ranging from the identification of the processive mechanisms of kinesin and myosin to understanding the mechanics of DNA. To date, these investigations have relied almost exclusively on the use of isotropic probes based on collo…