8 research outputs found
Nodular Lymphoid Hyperplasia in a Patient Initially Believed to Have Familial Adenomatous Polyposis
A 50-year-old male was initially thought to have familial adenomatous polyposis (FAP) after innumerable small nodules in the upper GI tract were discovered upon endoscopic retrograde cholangiopancreatography for common bile duct stone extraction. ERCP was unsuccessful due to inability to find the major papilla amongst the nodules found in the duodenum. Biopsy of the nodules was consistent with nodular lymphoid hyperplasia. The patient was later found to have common variable immunodeficiency
Hilbert functions and Jordan type of Perazzo Artinian algebras
We study Hilbert functions, Lefschetz properties, and Jordan type of Artinian
Gorenstein algebras associated to Perazzo hypersurfaces in projective space.
The main focus lies on Perazzo threefolds, for which we prove that the Hilbert
functions are always unimodal. Further we prove that the Hilbert function
determines whether the algebra is weak Lefschetz, and we characterize those
Hilbert functions for which the weak Lefschetz property holds. By example, we
verify that the Hilbert functions of Perazzo fourfolds are not always unimodal.
In the particular case of Perazzo threefolds with the smallest possible Hilbert
function, we give a description of the possible Jordan types for multiplication
by any linear form.Comment: 23 page
Microstructure, magnetic and mechanical properties of Fe–28Cr–15Co–1Si cast magnets containing Mo and Ti additives
Geochemical processes analysis and evaluation of groundwater quality in Hamadan Province, Western Iran
Risk factors of acute ischemic stroke in patients presented to Beni-Suef University Hospital: prevalence and relation to stroke severity at presentation
Analysis of the genome sequence of the flowering plant Arabidopsis thaliana
The flowering plant Arabidopsis thaliana is an important model system for identifying genes and determining their functions. Here we report the analysis of the genomic sequence of Arabidopsis. The sequenced regions cover 115.4 megabases of the 125-megabase genome and extend into centromeric regions. The evolution of Arabidopsis involved a whole-genome duplication, followed by subsequent gene loss and extensive local gene duplications, giving rise to a dynamic genome enriched by lateral gene transfer from a cyanobacterial-like ancestor of the plastid. The genome contains 25,498 genes encoding proteins from 11,000 families, similar to the functional diversity of Drosophila and Caenorhabditis elegans - the other sequenced multicellular eukaryotes. Arabidopsis has many families of new proteins but also lacks several common protein families, indicating that the sets of common proteins have undergone differential expansion and contraction in the three multicellular eukaryotes. This is the first complete genome sequence of a plant and provides the foundations for more comprehensive comparison of conserved processes in all eukaryotes, identifying a wide range of plant-specific gene functions and establishing rapid systematic ways to identify genes for crop improvement