Materials Literature
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THE TITLE COMPOUND, SODIUM TETRABORATE DECAHYDRATE (MINERAL NAME: borax), Na(2)[B(4)O(5)(OH)(4)]·8H(2)O, has been studied previously using X-ray [Morimoto (1956). Miner. J.2, 1-18] and neutron [Levy & Lisensky (1978). Acta Cryst. B34, 3502-3510] diffraction data. The structure contains tetra-borate anions [B(4)O(5)(OH…
Polypropylene/calcium carbonate (PP/CaCO3) nanocomposites were prepared by melt compounding (C-1) and novel compounding process (C-2), respectively. Scanning electronic microscope (SEM) results illustrated that CaCO3 nanoparticles were well dispersed at nanoscale in C-2, whereas the nanoparticles were mostly aggregate…
In this work, a geometrical model for 1 × 1 purl fabric is created by using Kurbak's (1998) model of plain knitted fabric. Drawings of the structure were created by using the graphics program 3DS-MAX. The loop shape obtained was a similar shape to what has been obtained experimentally in real fabrics.
Abstract Attapulgite (AT) clay was firstly treated with sodium polyacrylate (PAS), then polyamide 6 (PA6)/AT nanocomposites were prepared by simple melt compounding. Transmission electron microscope (TEM) and Fourier transform infrared spectrometry (FT‐IR) of treated AT confirm the success of purifying and surface mod…
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Edible films containing soy protein isolate, long-chain fatty acids, and cross-linkers using glycerol as the plasticizer have been prepared. FTIR spectra reveal the presence of different groups present in the biofilms. The WVP value is highest in the case of films with 10% oleic acid and decreases with increasing conc…
The flows induced by acoustic streaming in a three-dimensional side-heated parallelepiped cavity of length Ax representative of crystal growth configurations are numerically studied. Both the structure of the flows and their stability properties are determined. The flows have different symmetries, belonging to the gro…
The crystal structure of the protein product of the gene locus At1g05000, a hypothetical protein from A. thaliana, was determined by the multiple-wavelength anomalous diffraction method and was refined to an R factor of 20.4% (R(free) = 24.9%) at 3.3 A. The protein adopts the alpha/beta fold found in cysteine phosphat…
Abstract Multiwalled carbon nanotubes (MWNT) were successfully functionalized with phthalazinone‐containing diamine (DHPZDA) groups by the amidation reaction. The morphologies and structures of the DHPZDA‐functionalized MWNT (MWNT‐DHPZDA) were characterized by scanning electron microscope, Fourier transform infrared,…
High Resolution Image Download MS PowerPoint Slide Both hexagonal zinc and wurtzite zinc oxide were deposited on p-type silicon substrate by the electrodeposition with an aqueous solution of zinc nitrate-6-hydrate near room temperature. Zinc dominates the growth at higher current density, and zinc oxide dominates the…
Chemical reasoning based on ligand-field theory suggests that homoleptic cyano complexes should exhibit low-spin configurations, particularly when the coordination sphere is nearly saturated. Recently, the well-known chromium hexacyano complex anion [Cr(CN)6](4-) was shown to lose cyanide to afford [Cr(CN)5](3-) in th…
New coordination polymers {[Ln(tza)3(H2O)2]·mH2O}n (Ln = LaIII1 and PrIII2, m = 2; Ln = NdIII3, m = 1.5) and {[Sm2(tza)6(H2O)5]·H2O}n4 (Htza = tetrazole-1-acetic acid) have been synthesized and characterized by IR spectroscopy, elemental analysis, X-ray crystallography, and magnetic measurements. The Htza ligand coord…
The gene for the D-mandelate dehydrogenase (D-ManDH) of Enterococcus faecalis IAM10071 was isolated by means of an activity staining procedure and PCR and expressed in Escherichia coli cells. The recombinant enzyme exhibited high catalytic activity toward various 2-ketoacid substrates with bulky hydrophobic side chain…
The effect of external electric fields on the photoluminescence intensity of single-walled carbon nanotubes was investigated for individual nanotubes and bulk samples in polymeric films. Fields of up to 10(7) V/m caused dramatic, reversible decreases in emission intensity. Quenching efficiency varied as the cosine of…
Abstract Hybrid composite laminates consisting of polyvinyl alcohol (PVA) as continuous phase (33% by weight) and lignocellulosic fillers, derived from sugarcane bagasse, apple and orange waste (22% by weight) were molded in a carver press in the presence of water and glycerol such as platicizers agents. Corn starch w…
Template co-condensation of 2,3-dicyano-5,7-diphenyl-6H-1,4-diazepine 1 with 10-fold molar excess of phthalodinitrile 2 in the presence of MgII propoxide or butoxide in the corresponding alcohol leads to a mixture of MgII-diazepinoporphyrazines 3–6 from which the low symmetry 3:1 species 3, which contains three annula…
X-ray scattering and electron microscopy were used to characterize the structure of poly(ethylene- alt -propylene- block -ethylene oxide- block-n -hexyl methacrylate) (PEP- b -PEO- b -PHMA) triblock copolymer/aluminosilicate hybrid materials in which the volume fraction of the PEP end-block (0.09 ≤ f PEP ≤ 0.12) was m…
The effect of vascular endothelial growth factor (VEGF) on skin graft survival was studied in rats. Models of skin grafting on muscle and periosteum were designed. For the study of skin grafting on muscle model, 32 rats were divided into 4 groups. VEGF was administrated systemically after skin graft placement intrafas…
In this paper, a computerized method has been proposed for automatic measurement and recognition of yarn wet snarls from an image of snarled yarn samples captured in a water bath. After image acquisition, image conversion and individual snarled sample extraction, the yarn profile function was extracted from the separa…
Abstract Structural and magnetic properties of La 0.7 Pb 0.3 (Mn 1– x Ni x )O 3 (0.1 ≤ x ≤ 0.3) manganites are reported. Samples were fabricated by the sol–gel low‐temperature method. At room temperature, the first structural characterization of all phases indicated the rhombohedral space group ( R $\bar {3}$ c ). All…