Results 1 to 10 of about 568,935 (268)

Approximate polymorphisms

open access: yesProceedings of the 54th Annual ACM SIGACT Symposium on Theory of Computing, 2022
For a function $g\colon\{0,1\}^m\to\{0,1\}$, a function $f\colon \{0,1\}^n\to\{0,1\}$ is called a $g$-polymorphism if their actions commute: $f(g(\mathsf{row}_1(Z)),\ldots,g(\mathsf{row}_n(Z))) = g(f(\mathsf{col}_1(Z)),\ldots,f(\mathsf{col}_m(Z)))$ for all $Z\in\{0,1\}^{n\times m}$.
Chase, Gilad   +4 more
openaire   +2 more sources

PolyMorph: A P300 Polymorphic Speller [PDF]

open access: yes, 2013
P300 is an electric signal emitted by brain about 300 milliseconds after a rare, but relevant-for-the-user event. Even if it is hard to identify and it provides a low-rate communication channel, it can be used in cases in which other evoked potentials fail.
CASAGRANDE, ALBERTO   +4 more
openaire   +3 more sources

Angiotensin-converting enzyme insertion/deletion polymorphism does not influence the restenosis rate after coronary stent implantation [PDF]

open access: yes, 2002
Background. Experimental studies have shown an activation of the angiotensin-converting enzyme (ACE) system as a response to endothelial injury. Recent publications have elucidated the hypothesis that the ACE gene polymorphism may influence the level of ...
Hausmann, Dirk   +10 more
core   +1 more source

Allelic drop-out may occur with a primer binding site polymorphism for the commonly used RFLP assay for the -1131T>C polymorphism of the Apolipoprotein AV gene. [PDF]

open access: yes, 2006
Apolipoprotein AV (ApoAV) gene variant, -1131T>C, is associated with increased triglyceride concentrations in all ethnic groups studied. An MseI based RFLP analysis is the most commonly used method for genotyping this SNP.
Andrew T Hattersley   +20 more
core   +1 more source

Impact of mating systems on patterns of sequence polymorphism in flowering plants [PDF]

open access: yes, 2006
A fundamental challenge in population genetics and molecular evolution is to understand the forces shaping the patterns of genetic diversity within and among species.
Deborah Charlesworth   +5 more
core   +1 more source

Response to combination therapy with interferon alfa-2a and ribavirin in chronic hepatitis C according to a TNF-alpha promoter polymorphism [PDF]

open access: yes, 2003
Background. Tumor necrosis factor-alpha (TNF-alpha) is involved in the pathogenesis of chronic active hepatitis C. Polymorphisms in the promoter region of the TNF-alpha gene can alter the TNF-alpha expression and modify the host immune response.
Konig, A.   +8 more
core   +1 more source

Association of FcγRIIa R131H polymorphism with idiopathic pulmonary fibrosis severity and progression [PDF]

open access: yes, 2010
Background A significant genetic component has been described for idiopathic pulmonary fibrosis (IPF). The R131H (rs1801274) polymorphism of the IgG receptor FcγRIIa determines receptor affinity for IgG subclasses and is associated with several chronic ...
Hart Simon P   +31 more
core   +1 more source

Angiotensin-converting enzyme I/D polymorphism and preeclampsia risk: Evidence of small-study bias [PDF]

open access: yes, 2006
Background Inappropriate activation of the renin-angiotensin system may play a part in the development of preeclampsia. An insertion/deletion polymorphism within the angiotensin-I converting enzyme gene (ACE-I/D) has shown to be reliably associated with ...
Casas Juan P   +39 more
core   +1 more source

Impulsive traits and 5-HT2A receptor promoter polymorphism in alcohol dependents: Possible association but no influence of personality disorders [PDF]

open access: yes, 2001
Objective: Impulsive behavior in alcoholics puts them at serious risk of severer course of disease and has been related to the serotonergic neurotransmission dysfunction.
Bondy, Brigitta   +4 more
core   +1 more source

Polymorphism in Benzamide

open access: yesAngewandte Chemie, 2005
(Figure Presented) At long last, the crystal structure of the metastable form of benzamide, whose existence has been known of for over 170 years, has finally been solved by using a combination of in situ crystallization, high-speed synchrotron X-ray powder diffraction, and global-optimization methods of structure determination (see picture).
W. I. F. David   +5 more
openaire   +4 more sources

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