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Article
Studies of Polymers with Radiation
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Article
Conoscopic observations of shear-induced rotations in nematic liquid crystals
Orientational changes in monodomains of flow-aligning liquid crystals, 4-n-pentyl-4′-cyanobiphenyl and N-(4-methoxybenzylidene)-4-butylaniline, were studied during shear and recovery in a linear shearing device ...
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Article
Rotation of liquid crystalline macromolecules in shear flow and shear-induced periodic orientation patterns
We have measured the shear-induced rotation of the nematic director in a liquid crystalline polymer using poly benzyl glutamate (PBG) as model system. PBG is a well characterized synthetic poly (α amino acid) ...
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Article
Physical Studies of a Series of Main-Chain Liquid Crystalline Polymers With Long Soft Segment
A series of main-chain liquid crystalline polymers with long and polydisperse soft segments has been synthesized. The thermal properties of these polymers have been characterized by differential scanning calor...
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Article
Crystallization From Polymer Blends
Binary polymer blends in which one or both components crystallize have been considered. These may be miscible or immiscible in the amorphous state, and phase separation may occur along with crystallization. Th...
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Chapter
Scattering Studies of the Crystallization of Polymers and their Blends
The crystallization of polymers and their blends has been studied by light, x-ray, and neutron scattering. Light scattering serves to characterize the crystallization at the level of spherulites and other supe...
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Article
Rheo-Optics of an Augned Thermotropic Liquid Crystalline Polymer
Rheo-optical studies on aligned and unaligned melts of a main chain thermotropic polyester with flexible spacers are discussed in terms of the predictions of the Ericksen-Leslie equations. It is shown, using c...
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Article
Light Scattering Studies of the State of Dispersion in Molecular Composites
Polymer solutions comprising stiff-chain polyester and flexible polysulfone were examined via light scattering techniques. Results were analyzed using the Stein-Wilson extension of the Debye-Bueche theory, in ...
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Article
Surface Enrichment and Evaporation in a Polymer Mixture of Long and Short Chains
Neutron reflectivity has been used to determine the concentration profile at the vacuum-polymer interface for a two polymer blend. To quantify surface enrichment and evaporation due to differences in chain len...
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Article
The use of Small-Angle Neutron Scattering Techniques for the Study of Polymer Miscibility and Deformation
The scattered amplitude from a collection of objects, each small as compared with the wavelength of the radiation, is given by
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Chapter
Optical Studies of Network Topology
Polymer networks can usually sustain large recoverable deformations due to the presence of chemical crosslinks which serve to bind long chains into a permanent network structure. The elasticity of the network ...
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Article
Recent Advances in Rheo-Optical Studies of Polymers in the Solid State
Four recent developments for the study of the rheo-optical behavior of polymeric films are reviewed. These are (1) the use of the two-dimensional optical multichannel analyzer for the study of changes in super...
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Article
Neutron cloud poinds and concentration fluctuations of polymer blends
Cloud points were observed in the blends of deuterated polystyrene (PSD) and hydrogeneous poly (vinyl methyl ether) (PVME) by means of temperature scanning Small Angle Neutron Scattering (SANS) technique. The ...
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Chapter
Chemotherapy for stage III-A Hodgkin’s disease: The proper role
Despite the availability of results from a large number of clinical trials, therapy of stage III-A Hodgkin’s disease remains a subject of controversy as chemotherapy alone, radiotherapy alone, and combined mod...
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Chapter and Conference Paper
Small Angle Light Scattering from the Polymeric Solid State
The Rayleigh scattering of visible light from a polymeric solid provides information about its morphology. Scattering arises because of fluctuations in average refractive index (density), anisotropy and orient...
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Article
Waldenstrom's macroglobulinemia, a hyperviscosity manifestation of venous stasis retinopathy
Waldenstrom's macroglobulinemia is characterized by hyperviscosity. This is usually the result of an increased serum concentration of IgM molecules; this paraprotein has a high molecular weight and unusual sha...
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Chapter
Clinical Features and Clinical Evaluation of Hodgkin’s Disease and the Non-Hodgkin’s Lymphomas
While Hodgkin’s disease and the non-Hodgkin’s lymphomas constitute a diverse spectrum of lymphoproliferative malignancies, the disorders share a number of important similarities. Both Hodgkin’s disease and the...
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Chapter
Lithium and Granulocytopenia During Induction Therapy of Acute Myelogenous Leukemia: Update of an Ongoing Trial
Administration of lithium carbonate to normal subjects and psychiatric patients causes increased production of granulocytes (Rothstein et al., 1978; Stein et al., 1978b). The administration of lithium carbonate t...
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Chapter
Lithium Therapy of Chronic Neutropenia
Lithium carbonate can increase granulocyte production in psychiatric patients (Rothstein et al., 1978) and normal subjects (Stein et al., 1978b). Administration of lithium has improved neutropenia in cases of Fel...
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Article
Scattering of Light from Assemblies of Truncated and Disordered Spherulites
The light-scattering patterns from two-dimensional statistically arranged spherulites have been examined by using a combination model which takes into account the size distribution, truncation, and disorder ef...
