Materials Literature
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This study investigated the factors influencing the oxygen metabolism of aortic valve interstitial cells (VICs). Porcine VICs in cell suspension at different passages, and adhered to coverslips at different confluencies, as well as fresh porcine valve leaflets, were incubated in an oxygen respiration chamber at 37 deg…
In the analysis of crystallographic texture, the orientation distribution function (ODF) of the grains is generally expressed as a linear combination of the generalized spherical harmonics. Recently, an alternative expansion of the ODF, as a linear combination of the hyperspherical harmonics, has been proposed, with t…
Freestanding protein films are interesting for many applications ranging from microencapsulation to tissue engineering. Here, the authors use interfacial rheology to characterize the adsorption kinetics and the rheology of spider-silk films formed at an oil water interface. The high surface activity of the engineered…
Abstract The binary metal silicides CaSi, BaSi, SrSi, and EuSi that crystallize in the CrB type absorb reversibly hydrogen. Hydrogen contents of the products were measured by the carrier gas hot extraction method (CaSiH x : 1.56 wt %, x ≈︁ 1.06; SrSiH x : 1.35 wt %, x ≈︁ 1.6; BaSiH x : 2.08 wt %, x ≈︁ 3.4; EuSiH x : 0…
A polar mirror symmetrical contribution originated from the arrangement of grain boundaries existing in the ZnO film is detected by reflective second harmonic generation pattern. The ordering of ZnO grain boundary is dependent on the kinetic energy of deposited atoms and affects the quality of ZnO films. The net direc…
Three non-destructive test (NDT) methods were used to detect the two dimensional C/SiC specimens after low velocity impact (LVI) of various energies. The damage areas characterized by these methods were very different. Both ultrasonic and thermographic images reveal the LVI damages, while X ray is non-sensitive to the…
Surface hydroxylation is a major source of poisoning in Pd-based catalysts during CH 4 combustion reactions. By means of density functional theory, the reactivity of the PdO{101} surface and the Pd{100}-(√5 × √5) R 27°-O surface oxide toward H 2 is examined, as representative surfaces of the catalyst at different oxid…
We study the optical-absorption spectra in a polar ferrimagnet ${\text{GaFeO}}_{3}$. We consider the $E1$, $E2$, and $M1$ processes on Fe atoms. It is shown that the magnetoelectric effect on the absorption spectra arises from the $E1\text{\ensuremath{-}}M1$ interference process through the hybridization between the $…
TiO2 nanomaterials with different dimensions(zero and one), sizes(20nm, 50nm and 100nm in diameter) and crystal structures(100% rutile, 100% anatase and combination of 20% rutile and 80% anatase) were confected to suspensions and ointment with varied concentrations and evaluated in animal model (Balb-c mouse). These m…
Three new extended arsenatomolybdates constructed from different As−Mo−O cluster units and Cu-based complex bridges, namely, (As 6 CuMo 6 O 30 ){[Cu(imi) 4 ] 3 [As 6 CuMo 6 O 30 ]} 2 ·6H 2 O ( 1 ), [Cu(enMe) 2 ] 3 [As 3 Mo 3 O 15 ] 2 ·2H 2 O ( 2 ), and (NH 4 ) 10 {Cu(H 2 O) 4 }[AsMo 6 O 21 (OAc) 3 ] 2 ·12H 2 O ( 3 ) (…
The nonstoichimetric Ba 0.92 Y 2.15 F 8.29 submicrospheres that piled up by nanoparticles have been prepared via a solution-based method in a hydrothermal environment. The size distribution of the submicrospheres could be tuned by varying the amount of BaCl 2 . The fluoride source NaBF 4 plays an important role in the…
The hyperthermophilic archaeon Pyrococcus furiosus is a strict anaerobe. It is therefore not expected to use the oxidative tricarboxylic acid (TCA) cycle for energy transduction. Nonetheless, its genome encodes more putative TCA cycle enzymes than the closely related Pyrococcus horikoshii and Pyrococcus abyssi, includ…
The spatial variability of polarization reversal behavior in the relaxor 0.9Pb(Mg1/3Nb2/3O3)–0.1PbTiO3 crystal, is revealed on the ∼100 nm scale using switching spectroscopy piezoresponse force microscopy. Quenched fields conjugate to polarization are found, which show mesoscopic (∼100–200 nm) spatial fluctuations aro…
Abstract Microscopically clean graphene surfaces are scrutinized via atomic resolution high angle dark field imaging and electron energy loss spectroscopy for presence of adsorbed atoms. Carbon ad‐atoms can be observed in dark field images, whereas hydrogen is revealed in electron loss spectra. Spectrum images show th…
Magnetoelectric (ME) composite structures of Pb(Zr 0.52 Ti 0.48 )O 3 (PZT) and CoFe 2 O 4 (CFO) were prepared by directly growing PZT films on highly dense CFO ceramics via a simple solution spin coating, rather than by conventional high‐temperature cofiring. An obvious ME response, which had the same bias‐dependent t…
In this study the mechanical properties of shellac films, prepared by solution casting, were evaluated with varying amounts of Ethylene Glycol (EG) and 2-Ethyl-2-(hydroxymethyl)-1,3-propandiol-trimethacrylate (EHMPTMA). Mechanical properties such as tensile strength (TS) and elongation at break (Eb) of the raw shellac…
We have recently shown that p-terphenyl-3,5,3',5'-tetracarboxylic acid adsorbed on graphite self-assembles into a two-dimensional rhombus random tiling. This tiling is close to ideal, displaying long-range correlations punctuated by sparse localized tiling defects. In this article we explore the analogy between dynami…
The energetics and kinetics of the thermal and photochemical cis/trans-isomerization of azobenzenes and stilbenes are of fundamental interest to physical organic chemistry, because they may serve as “reference reactions” for the various theoretical and computational methods. The same applies to the 2,2′-cyclization of…
A nanofabricated electrothermal test structure is reported for directly measuring the thermal conductivity of aluminum nanowires near room temperature. Interdigitated nanowires perturb an otherwise symmetric heater-sensor structure analogous to an electrical bridge circuit. Nanowires studied are 100 nm thick with 75,…
Multiple phase transitions and magnetic phase coexistence lead to a negative magnetocaloric effect in a wide temperature range of ∼10–250 K in La0.215Pr0.41Ca0.375MnO3. A large fraction of the magnetocaloric effect originates from the low temperature phase separated state, which is composed of coexisting, magnetic fie…