Materials Literature
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Abstract A simple and robust dip‐coating method for fabricating carbon nanotube (CNT) field emitters has been proposed. The thin multiwalled (tMW)CNTs synthesized by CVD were dispersed in various solutions such as N , N‐ dimethylformamide (DMF), isopropyl alcohol (IPA), N ‐methyl‐2‐pyrrolidinone (NMP), and dichloroeth…
Combined QM/MM simulations have been carried out to investigate the origin of the carbon acidity enhancement in the alanine racemization reaction catalyzed by alanine racemase (AlaR). The present studies show that enhancement of carbon acidity of alpha-amino acids by cofactor pyridoxal 5'-phosphate, PLP, with an unusu…
Abstract Novel polystyrene nanoparticles were synthesized by the controlled intramolecular crosslinking of linear polymer chains to produce well‐defined single‐molecule nanoparticles of varying molecular mass, corresponding directly to the original linear precursor chain. These nanoparticles are ideal to study the rel…
Cell sourcing for tissue-engineered heart valves remains a critical issue. In this work, human dermal fibroblasts (HDF) or porcine valve interstitial cells (PVIC) were entrapped in adherent fibrin disk constructs and harvested at 3 and 5 weeks. We compared the fibrin remodeling abilities of each cell type in Dulbecco'…
ADVERTISEMENT RETURN TO ISSUEPREVCommunication to the...Communication to the EditorNEXTSpontaneous Formation of Poly(p-phenylenevinylene) Nanofiber Yarns through Electrospinning of a PrecursorHidenori Okuzaki, Takui Takahashi, Naoya Miyajima, Yasutada Suzuki, and Tetsuo KuwabaraView Author Information Interdisciplinar…
Approximately one-third of the open reading frames encoded in the Sulfolobus solfataricus genome were differentially expressed within 5 min following an 80 to 90 degrees C temperature shift at pH 4.0. This included many toxin-antitoxin loci and insertion elements, implicating a connection between genome plasticity and…
Assemblies of biomaterials onto mechanically stable inorganic structure are advantageous for the practical applications because of the potential to improve the stability and performance of biomaterials in the biocatalytic processes. Among many kinds of inorganic materials, mesoporous materials such as mesoporous silic…
Tri Glycinsulphate with partial substitution of phosphoric acid, namely Tri Glycine Sulpho Phosphate (TGSP) has been grown by slow cooling method. Habit modifications have been observed with change in the concentration of ortho phosphoric acid (H3PO4). Monoclinic structure of the grown crystals has been confirmed usin…
Abstract: The second order perturbation of magnetic energy for ferromagnetic thin films of two and three layers has been studied using classical Heisenberg Hamiltonian. According to our model, the film with two layers is equivalent to an oriented film, when anisotropy constants do not vary inside the film. But the ene…
The behavior of activated carbon fibers (ACF) and activated carbon (AC) in water and aqueous solutions of H2O2, NaOH, NaCN and KI3 in the presence of atmospheric air is studied by physicochemical methods: X-ray photoelectron spectroscopy (XPS), ESR, and attenuated total reflectance IR (ATR-IR) and Fourier Transform IR…
Single-wall carbon nanotubes (SWCNTs) have been grown by catalytic chemical vapor deposition (CCVD) at 0.05 Pa using an ultrahigh-vacuum chamber. The characterization of SWCNTs grown at various temperatures and pressures has been carried out by Raman spectroscopy and scanning electron microscopy. Our main finding is t…
This paper investigates the treatment of chromium (Cr) contaminated industrial sludge from a tanning process with ultrasound to enhance the sludge settling ability and dewatering ability. Ultrasound at various frequencies, intensities, and time was tested to optimize the operation. The results show that treatment with…
Tungsten trioxide (WO3) films have been coated on indium thin oxide (ITO) conductive glass substrate, using aqueous solution of peroxotungstic acid (PTA) by the sol-gel dip coating method. X-ray diffractometery (XRD) analysis confirmed monoclinic and triclinic structure for the film and powdered WO3 respectively. Four…
Nowadays in gas insulated systems (GIS), SF6is often used as insulating medium. Due to the fact that SF6is a greenhouse gas with a very high global warming potential (GWP), alternatives have been searched for over the last years. In particular, SF6/N2gas mixtures have been extensively investigated for the use in gas i…
Abstract The rare hydrous scandium phosphate, kolbeckite, [Sc(PO 4 ).2H 2 O], has been recognized for the first time from the Hagendorf-Pleystein pegmatite province. The mineral was formed by the alteration of quartz-rich relict cores of pegmatites containing rutile, ilmenite, columbite, pyrochlore, wolframite, monazi…
The phonon Boltzmann equation is solved numerically in order to study the phonon thermal conductivity of micro/nanostructured thin films with open holes in a host material. We focused on the size effect of embedded pores and film thickness on the decrease in thermal conductivity of the film. Simulations have revealed…
The optical absorption coefficient of amorphous 40TeO 2 -(60-x) V 2 O 5 -xMoO 3 thin films was determined in a spectral range 190-1100 nm at room temperature. The fundamental optical absorption edge was sharp. The optical gap generally increases as the proportion of MoO 3 in the mixed films increases. The width of the…
Abstract Summary: Nonwoven mats from hemp and polypropylene fibres in various proportions were produced and hot pressed to make composite material. The effect of hemp fibre content and anisotropy in nonwoven mats resulting from the carding technology were examined on the basis of the three‐point bending, tensile and i…
The nature and mechanisms of formation of the spontaneous polarization arising in thin ferroelectric films in the course of formation of a thin-film capacitor structure and relaxation of this polarization under the action of an electric field, temperature, and illumination are discussed.
Via-depletion electromigration was studied under a number of conditions in a 65-nm technology. Observed failure distributions were either single mode or bimodal, depending on the structural configuration. The distribution and the time to fail for the early-fail mode of the bimodal distributions varied with linewidth,…