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Now showing items 151-160 of 161
Positron lifetime calculation of the elements of the periodic table
(IOP, 2007-04-10)
Theoretical positron lifetime values have been calculated systematically for most of the elements of the periodic table. Self-consistent and non-self-consistent schemes have been used for the calculation of the electronic ...
Jejunal microvilli atrophy and reduced nutrient transport in rats with advanced liver cirrhosis: improvement by Insulin-like Growth Factor I
(BioMed Central, 2004-06-14)
Background: Previous results have shown that in rats with non-ascitic cirrhosis there is an altered transport of sugars and amino acids associated with elongated microvilli. These alterations returned to normal with the ...
Ceramide-enriched membrane domains in red blood cells and the mechanism of sphingomyelinase-induced hot-cold haemolysis
(American Chemical Society, 2008-10-28)
Hot-cold hemolysis is the phenomenon whereby red blood cells, preincubated at 37 °C in
the presence of certain agents, undergo rapid hemolysis when transferred to 4 °C. The mechanism of this
phenomenon is not understood. ...
Relationship between vegetation diversity and soil functional diversity in native mixed-oak forests
(Elsevier, 2007-05-22)
Most studies on the interactions between aboveground vegetation and belowground soil diversity have been carried out in microcosms or manipulated field plots. In the current study, we investigated the relationship between ...
High Mitochondrial DNA Stability in B-Cell Chronic Lymphocytic Leukemia
(Public Library Science, 2009-11-18)
Background: Chronic Lymphocytic Leukemia (CLL) leads to progressive accumulation of lymphocytes in the blood, bone marrow, and lymphatic tissues. Previous findings have suggested that the mtDNA could play an important role ...
Synthesis and characterization of epoxy polymers containing azobenzene groups that exhibit optical birefringence
(2007-12-03)
A push–pull azo dye (DO3) was used as photosensitive substance to satisfactorily synthesize new epoxy polymers containing azo groups covalently linked. Three different amines BA, TA and MXDA were used as hardeners. Materials ...
Understanding and using the meaning of statements in a bio- ontology: recasting the Gene Ontology in OWL
(Springer Nature, 2007-02-20)
The bio-ontology community falls into two camps: first we have biology domain experts, who actually hold the knowledge we wish to capture in ontologies; second, we have ontology specialists, who hold knowledge about ...
Distinct mechanisms of lipid bilayer perturbation induced by peptides derived from the membrane-proximal external region of HIV-1 gp41
(ACS Publications, 2009-04-29)
The conserved, membrane-proximal external region (MPER) of the human immunodeficiency
virus type-1 envelope glycoprotein 41 subunit is required for fusogenic activity. It has been proposed that
MPER functions by disrupting ...
Ontology Design Patterns for bio-ontologies: a case study on the Cell Cycle Ontology
(Springer Nature, 2008-04-29)
Bio-ontologies are key elements of knowledge management in bioinformatics. Rich and rigorous bio-ontologies should represent biological knowledge with high fidelity and robustness. The richness in bio-ontologies is a prior ...
The Cell Cycle Ontology: An application ontology for the representation and integrated analysis of the cell cycle pro- cess
(BMC, 2009-05-29)
The Cell Cycle Ontology (CCO) is an application ontology that automatically captures and integrates detailed
knowledge on the cell cycle process by combining, interlinking and enriching knowledge from various sources.
CCO ...