Materials Literature
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This article consists of the two parts. In the first part the nature of jute fiber, productivity, advantages, disadvantages, its composition etc. have been described. The jute fiber is also compared with the glass fiber. Inspite of some advantages, this natural fiber possess some drawbacks and thus needs chemical modi…
In situ whisker growth was observed during heat treatment of allylhydridopolycarbosilane (AHPCS) and SiC powder in the temperature range of 1250°–1350°C. TEM equipped with an electron energy loss spectrometer (EELS) verified that the banded whiskers are twinned single‐grained β‐SiC. Convergent beam electron diffractio…
Article A model for the adsorption of polyelectrolytes on pulp fibers: Relation between fiber structure and polyelectrolyte properties was published on December 1, 2000 in the journal Nordic Pulp & Paper Research Journal (volume 15, issue 5).
Formulae for estimating statistical uncertainties in quantitative phase analysis using the Rietveld method and the whole-powder-pattern decomposition method have been derived. The relative magnitude of statistical uncertainty for a derived weight fraction of a component in a mixture is given by σ( W m )/ W m = (1/ W m…
Translucent, colored magnets, which would open up new possibilities in optomagnetic devices, could potentially be realized in the form of molecule-based magnets composed of metal complexes. A new class of colored, magnetic thin films, prepared electrochemically and composed of KIaVII/IIIxCrII1–x[CrIII(CN)6]y, is repor…
Nonstoichiometric 10‐mol%‐excess‐BaO–BaTiO 3 (Ba 1.1 TiO 3.1 ) thin film grown on a (100) SrTiO 3 substrate consisted of heteroepitaxial c ‐axis‐oriented BaTiO 3 perovskite crystals including Ruddlesden–Popper planar faults and nanometer‐scale multiple (111) twin lamellae. High‐resolution electron microscopy and elect…
The light-induced high-spin-->low-spin relaxation for the Fe(II) spin-crossover compounds [Fe(btpa)](PF6)2 and [Fe(b(bdpa))](PF6)2 in solution, where btpa is the potentially octadentate ligand N,N,N',N'-tetrakis(2-pyridylmethyl)-6,6'-bis(aminomethyl)-2,2'-bipyridine and b(bdpa) is the analogous hexadentate ligand N,N'…
Synthesis of hexacelsian barium aluminosilicate (BaAl 2 Si 2 O 8 or BAS) from BaCO 3 , Al 2 O 3 , and amorphous SiO 2 was examined. BaCO 3 can react with SiO 2 and Al 2 O 3 to form barium silicates (Ba 2 SiO 4 or B 2 S, BaSiO 3 or BS, and BaSi 2 O 5 or BS 2 ) and barium aluminate (BaAl 2 O 4 or BA). It is shown that t…
A tape‐casting process was used to prepare various Al 2 O 3 –TiC green tapes, from which laminated and functionally gradient Al 2 O 3 –TiC materials (FGM Al 2 O 3 –TiC) were produced by cutting, stacking, and laminating the material, removing the binder, and hot‐pressing the green bodies. The bending strength of the F…
Delta(5)-3-Ketosteroid isomerase catalyzes cleavage and formation of a C-H bond at a diffusion-controlled limit. By determining the crystal structures of the enzyme in complex with each of three different inhibitors and by nuclear magnetic resonance (NMR) spectroscopic investigation, we evidenced the ionization of a h…
Silver and its alloys frequently are used as electrode material for BaTiO 3 ‐based dielectrics. In the present study, a small amount of fine silver particles have been intimately mixed with BaTiO 3 powder. The sintering and grain‐growth behavior of the silver‐doped BaTiO 3 in air are investigated. The solubility of si…
Single-wall carbon nanotubes (SWNTs) were applied to electron emitters of field-emission displays (FEDs). Large-area FED devices with SWNT emitters were successfully fabricated in a diode mode using screen printing to demonstrate moving color images. They revealed excellent field-emission characteristics of a threshol…
The title compound has been synthesized as the first oligothiophenophane that has the typical stacking structure of a layered cyclophane and can behave as an ideal pi-dimer model.
Aurophilicity has been a topic of immense interest and has played an important role in multinuclear gold(I) chemistry. Several polynuclear gold(I) chalcogenido, amido, and mixed-metal complexes have been reported very recently which might give new insights into the strategies for the construction of multinuclear gold(…
Abstract The crystal structures of synthetic Pb 3 O 2 (CO 3 ) and NaPb 2 (OH)(CO 3 ) 2 , have been solved by direct methods and refined to R = 0.062 and 0.024, respectively. Pb 3 O 2 (CO 3 ) is orthorhombic, Pnma, a = 22.194(3), b = 9.108(1), c = 5.7405(8) Å, V = 1160.4(3) Å 3 , Z = 8. There are four symmetrically dis…
Summary Low‐activity clay soils on old planation surfaces of the tropics are generally considered as stable end points of soil formation. It is therefore surprising to find Andisols on them. We characterized the properties of six profiles representative of these soils in the western part of the Nilgiri Hills (2000–250…
Biofilms, accumulations of microorganisms at interfaces, have been described for every aqueous system supporting life. The structure of these microbial communities ranges from monolayers of scattered single cells to thick, mucous structures of macroscopic dimensions (microbial mats; algal-microbial associations; trick…
A model for woven fabric behavior in bending is formulated based on a representation of fabric deformation as a coordinate transformation. The model is essentially based on previously published assumptions of yarn behavior but provides predictions closer to real fabric properties. It uses the energy approach for mecha…
Fossil marine diatom assemblages from the Sørsdal Formation, a deposit of diatomaceous sand from Marine Plain in the Vestfold Hills, provide age and palaeoenvironmental information from a Pliocene coastal setting in East Antarctica. Benthic and meroplanktic diatom taxa suggest deposition in a shallow coastal embayment…
The results of magnetization, electrical resistivity, and magnetoresistance measurements for two different directions on single crystalline ${\mathrm{Tb}}_{2}{\mathrm{PdSi}}_{3}$ are presented. The magnetic properties including magnetoresistance and the magnetic coupling are found to be strongly anisotropic with featu…