Results 261 to 270 of about 837,662 (281)
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Nature, 1968
Lecithin–water systems display a variety of phases. Several of these phases, observed at a high temperature in the presence of small amounts of water, belong to a class of structures recently discovered in the anhydrous divalent cation-soaps. In these structures the polar groups are clustered in rod-shaped regions, embedded in a disordered paraffin ...
V, Luzzati +2 more
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Lecithin–water systems display a variety of phases. Several of these phases, observed at a high temperature in the presence of small amounts of water, belong to a class of structures recently discovered in the anhydrous divalent cation-soaps. In these structures the polar groups are clustered in rod-shaped regions, embedded in a disordered paraffin ...
V, Luzzati +2 more
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Journal of Pharmaceutical Sciences, 1989
The polymorphism of sulfathiazole has been reexamined. The issue of the separate existence of two of the forms, forms III and IV, has now been definitively resolved: both forms exist. Single crystals were used to generate X-ray diffraction patterns, equivalent to those normally obtained from polycrystalline samples, using the ingenious Gandolfi camera.
Anwar, Jamshed +2 more
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The polymorphism of sulfathiazole has been reexamined. The issue of the separate existence of two of the forms, forms III and IV, has now been definitively resolved: both forms exist. Single crystals were used to generate X-ray diffraction patterns, equivalent to those normally obtained from polycrystalline samples, using the ingenious Gandolfi camera.
Anwar, Jamshed +2 more
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2013
Over the last decade, the explosive advances in sequencing and genotyping technologies fueled by major financial investments in basic science, have evidenced that hundreds of genes harboring variations contribute to human cancers and that genetic variability may influence patients' responses to post-surgical treatments (Hamburg and Collins, N Engl J ...
Siano, M, Vecchione, M, ILARDI, GENNARO
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Over the last decade, the explosive advances in sequencing and genotyping technologies fueled by major financial investments in basic science, have evidenced that hundreds of genes harboring variations contribute to human cancers and that genetic variability may influence patients' responses to post-surgical treatments (Hamburg and Collins, N Engl J ...
Siano, M, Vecchione, M, ILARDI, GENNARO
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Journal of Theoretical Biology, 1993
It is well known that for a single, autosomal locus with differential viabilities convergence to a stable equilibrium is assured. However if new alleles are introduced sequentially by mutation the final equilibrium may depend on the particular sequence. Thus the equilibrium to which the population moves will be randomly determined.
C, Cannings, J P, Tyrer, G T, Vickers
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It is well known that for a single, autosomal locus with differential viabilities convergence to a stable equilibrium is assured. However if new alleles are introduced sequentially by mutation the final equilibrium may depend on the particular sequence. Thus the equilibrium to which the population moves will be randomly determined.
C, Cannings, J P, Tyrer, G T, Vickers
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Polymorphous hemangioendothelioma
The Annals of Thoracic Surgery, 1999Polymorphous hemangioendothelioma is a rare vascular tumor; only 5 patients have been previously described. Half of all cases described have occurred in the thoracic cavity, all being discovered on chest radiologic studies obtained for other reasons. This report presents the case of a female patient with polymorphous hemangioendothelioma and a brief ...
T F, Rehring, A, Deutchman, J S, Cross
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Acta Crystallographica Section C Crystal Structure Communications, 2008
Gabapentin [or 1-(aminomethyl)cyclohexaneacetic acid], C(9)H(17)NO(2), exists as a zwitterion [1-(ammoniomethyl)cyclohexaneacetate] in the solid state. The crystal structures and bonding networks of two new monoclinic polymorphs (beta-gabapentin and gamma-gabapentin) are studied and compared with a previously reported gabapentin polymorph [alpha ...
Hayley A, Reece, Demetrius C, Levendis
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Gabapentin [or 1-(aminomethyl)cyclohexaneacetic acid], C(9)H(17)NO(2), exists as a zwitterion [1-(ammoniomethyl)cyclohexaneacetate] in the solid state. The crystal structures and bonding networks of two new monoclinic polymorphs (beta-gabapentin and gamma-gabapentin) are studied and compared with a previously reported gabapentin polymorph [alpha ...
Hayley A, Reece, Demetrius C, Levendis
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Annals of the New York Academy of Sciences, 1987
The phase behavior of phospholipids may be monitored using 31P or 2H NMR techniques, which provide information concerning the motional properties of the lipid ensemble, which may then be correlated with structure. The lamellar/nonlamellar phase preferences of many lipids, either synthetic or naturally derived, may be controlled by factors such as ...
C P, Tilcock, P R, Cullis
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The phase behavior of phospholipids may be monitored using 31P or 2H NMR techniques, which provide information concerning the motional properties of the lipid ensemble, which may then be correlated with structure. The lamellar/nonlamellar phase preferences of many lipids, either synthetic or naturally derived, may be controlled by factors such as ...
C P, Tilcock, P R, Cullis
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Journal of Pharmaceutical Sciences, 1972
An evaluation of entropies and enthalpies of transition and fusion and a comparison of X-ray diffraction patterns and IR spectra of polymorphic forms of structurally related compounds were undertaken to obtain information which might prove useful in correlating the frequency of occurrence of polymorphism with certain aspects of chemical structure ...
S S, Yang, J K, Guillory
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An evaluation of entropies and enthalpies of transition and fusion and a comparison of X-ray diffraction patterns and IR spectra of polymorphic forms of structurally related compounds were undertaken to obtain information which might prove useful in correlating the frequency of occurrence of polymorphism with certain aspects of chemical structure ...
S S, Yang, J K, Guillory
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The polymorphisms of fucosyltransferases
Legal Medicine, 2001The alpha(1,2)fucosyltransferase Se enzyme regulates the expression of the ABH antigens in secretion. Secretors, who have ABH antigens in their saliva, have at least one functional Se allele in the FUT2 locus, while non-secretors, who fail to express ABH antigens in saliva, are homozygous for the non-functional se allele. Molecular analyses of the FUT2
Y, Koda, M, Soejima, H, Kimura
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Chemistry and Physics of Lipids, 1986
In this review the polymorphic phase behaviour of several of the major classes of lipids found in biological membranes, both in isolation and also in mixtures, is briefly described. Emphasis is given to the ability of many membrane lipids to adopt non-lamellar phases in response to a variety of factors such as temperature, the presence of divalent ...
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In this review the polymorphic phase behaviour of several of the major classes of lipids found in biological membranes, both in isolation and also in mixtures, is briefly described. Emphasis is given to the ability of many membrane lipids to adopt non-lamellar phases in response to a variety of factors such as temperature, the presence of divalent ...
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