Materials Literature
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The crystal structure of La 2 SiO 5 was refined from laboratory X-ray powder diffraction data (CuK α 1 ) using the Rietveld method. The crystal structure is monoclinic (space group P 2 1 ∕ c , Z =4) with lattice dimensions a =0.93320(2) nm, b =0.75088(1) nm, c =0.70332(1) nm, β =108.679(1)°, and V =0.46687(1) nm 3 . T…
Abstract Hydrophobic organic montmorillonite (OMMT) which exists as stable dispersions in cyclohexane has been prepared by the combined modification of quaternary ammonium salts and coupling agents, and polybutadiene (PB)/OMMT nanocomposites (NCs) were successfully synthesized by in situ living anionic polymerization.…
One of the primary objectives in the design of protein inhibitors is to shape the three-dimensional structures of small molecules to be complementary to the binding site of a target protein. In the course of our efforts to discover potent inhibitors of Bcl-2 family proteins, we found a unique folded conformation adopt…
Weak depletion gels with particle radii of ∼200–500 nm have been reported to display a time-dependent settling behaviour where an initially space spanning gel displays a catastrophic collapse after a characteristic period of time, defined as the delay time. Several experiments suggest that thermally activated particle…
To know the accurate relationship between pore size and the pressure of capillary condensation or evaporation and also to elucidate the pore-connectivity effects on adsorption hysteresis and pore criticality for the ordered mesoporous silicas (MCM-48 and KIT-6) with bicontinuous gyroid structure, we carried out X-ray…
Rigidity transitions that separate elastic phases in glasses are studied in the case where the local structure is not fully determined from the macroscopic concentration. It is shown that the location of the rigidity transitions, and the intermediate phase that separates flexible from stressed rigid glasses, depend cr…
Nano-Ce 0.73 Ti 0.25 Pd 0.02 O 2- δ solid solution, prepared by solution combustion method, has been synthesized. The catalyst has been characterized by XRD, HRTEM and XPS. Synergistic interaction of Pd with Ti/Ce is very strong because of ionic substitution. The reducibility of Ce 0.73 Ti 0.25 Pd 0.02 O 2- δ is about…
The atomic structure and thermodynamic stability of $\mathrm{Ag}(111)(\sqrt{7}\ifmmode\times\else\texttimes\fi{}\sqrt{7})\mathrm{\text{\ensuremath{-}}}R19.1\ifmmode^\circ\else\textdegree\fi{}\mathrm{\text{\ensuremath{-}}}{\mathrm{CH}}_{3}\mathrm{S}$ has been studied by means of density functional calculations and atom…
The thermal properties of single-crystalline Bi nanowire arrays with different orientations and diameters were studied by differential scanning calorimeter and in situ high-temperature X-ray diffraction. Bi nanowires were fabricated by a pulsed electrodeposition technique within the porous anodic alumina membrane. The…
Polarized Raman spectra of isotope substituted $\mathrm{Sr}{\mathrm{Ti}}^{18}{\mathrm{O}}_{3}$ (STO18) crystals were studied in the ferroelectric phase below ${T}_{c}=24.5\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. Samples were confirmed to be a single domain in the tetragonal phase $({T}_{c}<T<{T}_{0}=108\phantom{\…
The growth dynamics of fluorescent perylene nanocrystals, which are fabricated by the reprecipitation method, was investigated using in situ and ex situ single-particle fluorescence measurements. A red shift in the emission maxima as the aging time increased was observed by single-particle fluorescence spectral measur…
Nanoparticles have been extensively studied as drug delivery systems. In this review, we focus on a relatively new type of nanoparticles--lipobeads--a liposome-hydrogel assembly as a novel drug delivery system. An appropriate assemblage of spherical hydrogel particles and liposomes combines the properties of both clas…
Reaction of K(10)[alpha(2)-P(2)W(17)O(61)] or K(10)[alpha(1)-P(2)W(17)O(61)] or [Bu(4)N][OsCl(4)N] in a water/methanol mixture, and subsequent precipitation with (Bu(4)N)Br provided [alpha(2)-P(2)W(17)O(61){Os(VI)N}](7-) and [alpha(1)-P(2)W(17)O(61){Os(VI)N}](7-) Dawson structures as tetrabutylammonium salts. Reaction…
This paper describes the preparation of model nanocomposites based on geometrically well-defined particles (laponite) dispersed into a PEO matrix of narrow molecular weight distribution. The preparation involves the protection of the laponite particles with an adsorbed or a grafted layer of PEO chains. The adsorption…
The origin of extended-range ordering in binary liquids and glasses is investigated. The starting point is a simple model pair potential which includes both Coulomb and dispersion forces. For this model, the behaviour of the Bhatia–Thornton partial structure factors at small scattering vector values is examined and al…
E-negative (ENG) and mu-negative (MNG) materials are successfully fabricated by using composite right/left-handed transmission line. The ENG and MNG materials are opaque in experiments, but the completely tunneling phenomenon occurs in the ENG-MNG pair, if the wave impedance and the effective phase shift of ENG and MN…
Treatment of tumor tissue without affecting normal cells has always been formidable task for drug delivery scientists and this task is effectively executed by polymer drug conjugate (PDC) delivery. The novelty of this concept lies in the utilization of a physical mechanism called enhanced permeability and retention (E…
Electrical properties of contacts formed between conducting polymers and noble metal nanoparticles have been examined using current-sensing atomic force microscopy (CS-AFM). Contacts formed between electrochemically prepared pi-conjugated polymer films such as polypyrrole (PPy), poly(3-methylthiophene) (P3MeT), as wel…
The mechanism of methanol oxidation to formaldehyde catalyzed by isolated vanadate species supported on silica has been investigated by in situ Raman and TPD/TPO experiments. Raman, XANES, and EXAFS were used to characterize the V-MCM-48 sample, prepared with a loading of 0.3 V/nm 2, and it is concluded that the oxidi…
Gamma-glutamyltranspeptidase (GGT) is an extracellular enzyme that plays a key role in glutathione metabolism. The mature GGT is a heterodimer consisting of L- and S-subunits that is generated by posttranslational cleavage of the peptide bond between Gln-390 and Thr-391 in the precursor protein. Thr-391, which becomes…