Guide for the Design, Construction, and Repair of Ferrocement
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A Method of Calculating Initial DNA Strand Breakage Following the Decay of Incorporated 125 I
Two sources of individual Auger electron spectra and an electron track code were used with a simple model of the DNA to successfully simulate the single-strand DNA breakage measured by Martin and Haseltine (1981). The conditions of the calculation were then extended to examine patterns of single-strand breaks in both…
Classification of the trilobite suborder Asaphina
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Octa-alkoxy phthalocyanine and naphthalocyanine derivatives: dyes with Q-band absorption in the far red or near infrared
The lithium alkoxide-catalysed cyclic tetramerisation of various 3,6-dialkoxy-4,5-dichlorophthalonitriles, 1,4-dialkoxynaphthalene-2, 3-dicarbonitriles and 3,6-dialkoxyphthalonitriles to give the corresponding metal-free octa-alkoxyoctachlorophthalocyanines, octa-alkoxynaphthalocyanines and octa-alkoxyphthalocyanines…
Hydrothermal Preparation of Ultrafine Ferrites and Their Sintering
Ultrafine and nearly spherical ferrites such as NiFe 2 O 4 , ZnFe 2 O 4 , Ni x Zn 1−x Fe 2 O 4 , Mn 0.5 Zn 0.5 Fe 2 O 4 , and CoFe 2 O 4 were prepared under mild hydrothermal conditions by precipitating from metal nitrates with aqueous ammonia. These hydrothermal ferrite powders were shown to sinter to almost theoreti…
A Comprehensive Mathematical Formulation of an Extended Taylor–Bishop–Hill Model Featuring Relaxed Constraints, the Renouard–WintenbergerTheory and a Strain Rate Sensitivity Model
The Taylor theory and the Bishop–Hill theory for the plastic deformation of polycrystals are expressed in a mathematical way which makes extensive use of vectors. These vectors represent either plastic strain rate tensors or deviatoric stress tensors, both in a unified five‐dimensional stress‐strain space. Such formul…
Induction motor analysis by time-stepping techniques
A numerical approach is described that overcomes the deficiencies of other methods through the use of a two-dimensional, nonlinear, time-stepping finite-element method for excitation from a constant voltage source. Comparison of stator current for no-load and load conditions shows good agreement with test values on a…
Applications of a theory of ferromagnetic hysteresis
The differential equation that underlies the theory of rate-independent hysteresis for isoperm ferromagnetic materials is modified and extended to rate-dependent nonisoperm materials. The theory and its extension exhibit all of the important features of ferromagnetic hysteresis, including the existence and stability o…
Ceramic coatings for carbon-carbon composites
Protection des composites carbone-carbone contre l'oxydation: revetements a base de SiC et de Si 3 N 4 , revetements resistants a plus de 1800°C
Polar host-guest interaction. Binding of nonionic polar compounds with a resorcinol-aldehyde cyclooligomer as a lipophilic polar host
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPolar host-guest interaction. Binding of nonionic polar compounds with a resorcinol-aldehyde cyclooligomer as a lipophilic polar hostYasuhiro. Aoyama, Yasutaka. Tanaka, Hiroo. Toi, and Hisanobu. OgoshiCite this: J. Am. Chem. Soc. 1988, 110, 2, 634–635Publication Date (Print)…
Dynamics in spinodal decomposition of polymer mixtures
Un mixing kinetics and ordering processes of polymer mixtures quenched into thermo-dynamically unstable states are reviewed with particular emphasis on (i) universality in the polymer dynamics in comparison with the dynamics for other systems, such as small molecular fluid mixtures, metallic alloys and inorganic glass…
High-resolution electron-beam induced deposition
A finely focused electron beam is used as a source of energy to decompose molecules, e.g., organometallics or hydrocarbons, adsorbed on the surface of a substrate. Films deposited by these means can be used as etch mask for reactive ion etching, as an absorber for various types of radiation, or directly as part of a d…
Raman spectroscopy of low-dimensional semiconductors
Raman spectroscopy is widely used to study the vibrational and structural properties of single crystals. More recently, in the fields of chemistry, physics, and engineering, interest in the properties of small objects has arisen. Small objects include microcrystalline materials, artificially layered semiconductor stru…
Generation of photon energy deposition kernels using the EGS Monte Carlo code
The EGS Monte Carlo code was used to generate photon energy deposition kernels which describe the energy deposited by charged particles set in motion by primary, first scattered, second scattered, multiple scattered and bremsstrahlung plus annihilation photons. These were calculated for a water medium irradiated with…
On electrically driven pattern-forming instabilities in planar nematics
The theoretical description of the threshold and near-threshold behavior of electrohydrodynamic convection in nematic liquid crystals in the (low-frequency) conduction regime is reconsidered. We present essentially the full three-dimensional linear stability analysis of the basic state and a major part of the weakly-n…
In‐situ photopolymerization of an oriented liquid‐crystalline acrylate
Abstract The photoinitiated polymerization of 4‐biphenylyl 4‐(6‐acryloyloxyhexyloxy)benzoate ( 1 ) in its oriented liquid‐crystalline state was studied. Monomer 1 has a thermotropic nematic phase between 88°C and 98°C, a monotropic nematic phase between 76°C and 88°C, and a monotropic smectic phase below 76°C. The ori…
Liposomes as drug carriers : recent trends and progress
This book is about liposomes and their uses in drug delivery. Conventional use of drugs is marred by side effects due to indiscriminate drug action, inability of drugs to reach areas in need of pharmacological intervention and drug premature inactivation and secretion. Liposomes incorporating drugs can direct these to…
Surface and near-surface chemistry of oxide materials
1. The Theory of Ceramic Surfaces (A.M. Stoneham, P.W. Tasker). 2. Electronic and Geometric Structure of Defects on Oxides and their Role in Chemisorption (V.E. Henrich). 3. Selected Experimental Methods in the Characterization of Oxide Surfaces (H. Hirschwald). 4. Surface Reactivity of Oxide Materials in Oxidation-Re…
Polyaniline: Solutions, Films and Oxidation State
The emeraldine oxidation state of polyaniline in its base form, “emeraldine base” can be solution-processed to yield large flexible films which can be doped to the metallic conducting regime (σ ∼ 1-5 S/cm). The approximate solubility of emeraldine base at room temperature in 80% aqueous acetic acid, 60% and 88% aqueou…
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Elongational data on a large number of polyethy lene sam pies with different structures and their blends are presented in order to evaluate the influence of the molecular weight and molecular weight distribution for a given degree of long chain branching. The elongational viscosity rises with the number of branch poi…