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Topic: Abstract nonsense


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In the News (Sat 22 Nov 08)

  
  Abstract nonsense - Wikipedia, the free encyclopedia
Abstract nonsense is a popular term used by mathematicians to describe certain kinds of arguments and concepts in category theory.
Typical instances are arguments involving diagram chasing, application of the definition of universal property, definition of natural transformations between functors, use of the Yoneda lemma and so on.
Other, possibly less flattering, characterizations of abstract reasoning have been recorded, although they have not acquired the status of mathematical jargon.
en.wikipedia.org /wiki/Abstract_nonsense   (205 words)

  
 Encyclopedia: Category theory
In mathematics (especially algebraic topology and abstract algebra), homology (in Greek homos = identical) is a certain general procedure to associate a sequence of abelian groups or modules to a given mathematical object (such as a topological space or a group).
Abstract algebra is the field of mathematics concerned with the study of algebraic structures such as groups, rings and fields.
In category theory, an abstract branch of mathematics, the dual of a category C is the category formed by reversing all the morphisms of C. That is, we take Cop to be the category with objects that are those of C, but with the morphisms from X to Y in...
www.nationmaster.com /encyclopedia/category-theory   (4301 words)

  
 Abstract Photography
Too many people think that an abstract photograph is supposed to be confusing and induce the 'Huh?' reaction but, in fact, the best of the abstracts give new information and provide viewers with insight into a quality that they cannot ordinarily experience directly but only as a property of something else.
Abstract photography is particularly difficult - many people seem to revert to very close up shots to create abstracts, but there are many ways, including some no-one has yet tried, to create abstract photographs.
Abstract photos, in my opinion, are those that don't necessarily contain a "universal theme" or those that don't "evoke emotion" or feeling or all that blah blah blah.
www.photo.net /bboard/q-and-a-fetch-msg?msg_id=007vfh   (2062 words)

  
 [No title]
Abstract and Keywords Every paper should begin with an abstract of about 100 words, followed by a set of keywords.
The abstract and keywords should be placed in the left column of the first page under the left half of the title.
The abstract should be a concise statement of the problem, approach, findings, and conclusions of the work described.
www.cs.uta.fi /~em/koka/paper_format.doc   (2052 words)

  
 Resource Description Framework (RDF): Concepts and Abstract Syntax
RDF Concepts and Abstract Syntax defines an abstract syntax on which RDF is based, and which serves to link its concrete syntax to its formal semantics.
This document defines an abstract syntax on which RDF is based, and which serves to link its concrete syntax to its formal semantics.
Note that such blank node identifiers are not part of the RDF abstract syntax, and the representation of triples containing blank nodes is entirely dependent on the particular concrete syntax used.
www.w3.org /TR/rdf-concepts   (4679 words)

  
 Nonsense mutations in the human beta -globin gene lead to unexpected levels of cytoplasmic mRNA accumulation -- ...
Premature nonsense codons decrease the stability of phytohemagglutinin mRNA in a position-dependent manner.
A regulatory mechanism that detects premature nonsense codons in T-cell receptor transcripts in vivo is reversed by protein synthesis inhibitors in vitro.
-globin mRNAs that harbor a nonsense codon are degraded in murine erythroid tissues to intermediates that have a 5' cap-like structure.
www.bloodjournal.org /cgi/content/full/96/8/2895   (4932 words)

  
 Absence of Calsequestrin 2 Causes Severe Forms of Catecholaminergic Polymorphic Ventricular Tachycardia -- Postma et ...   (Site not responding. Last check: 2007-11-05)
this nonsense mutation was inherited from the mother’s
consequence of nonsense mutations is not the synthesis of truncated
Hall GW, Thein S. Nonsense codon mutations in the terminal exon of the ß-globin gene are not associated with a reduction in ß-mRNA accumulation: a mechanism for the phenotype of dominant ß-thalassemia.
circres.ahajournals.org /cgi/content/full/91/8/e21   (3878 words)

  
 A Pilot Study of the Effect of Gentamicin on Nasal Potential Difference Measurements in Cystic Fibrosis Patients ...
Association of a nonsense mutation (W1282X), the most common mutation in the Ashkenazi Jewish CF patients in Israel, with presentation of severe disease.
Suppression of a nonsense mutation in mammalian cells in vivo by the aminoglycoside antibiotics G-418 and paromomycin.
Aminoglycoside-mediated rescue of a disease-causing nonsense mutation in the V2 vasopressin receptor gene in vitro and in vivo
ajrccm.atsjournals.org /cgi/content/full/161/3/860   (3651 words)

  
 Suppression of Nonsense Mutations Induced by Expression of an RNA Complementary to a Conserved Segment of 23S rRNA -- ...
Suppression of Nonsense Mutations Induced by Expression of an RNA Complementary to a Conserved Segment of 23S rRNA -- Chernyaeva et al.
Suppression of a UGA nonsense mutation caused by the in vivo expression of an RNA fragment complementary to the E.
The RNA fragment encoded in pA750 caused the suppression of a UGA mutation.
jb.asm.org /cgi/content/full/181/17/5257   (3547 words)

  
 Nonsense Mutations in Close Proximity to the Initiation Codon Fail to Trigger Full Nonsense-mediated mRNA Decay -- ...
-globin mRNAs with nonsense mutations at codons 15 and 17 (
-globin mRNAs carrying a 5'-proximal nonsense mutation reflects the proximity of the nonsense codon to the initiating AUG. A, analysis of mRNA expression in terminally differentiated MEL cells.
The relevance of the AUG proximity of a nonsense codon to NMD
www.jbc.org /cgi/content/full/279/31/32170   (5821 words)

  
 A Nonsense Mutation in MLH1 Causes Exon Skipping in Three Unrelated HNPCC Families -- Stella et al. 61 (19): 7020 -- ...   (Site not responding. Last check: 2007-11-05)
A Nonsense Mutation in MLH1 Causes Exon Skipping in Three Unrelated HNPCC Families -- Stella et al.
Analysis of cis-acting effect of nonsense AAG to TAG mutation at codon 461 of exon 12 on mRNA splicing.
effect of a nonsense mutation on the exon skipping is incomplete.
cancerres.aacrjournals.org /cgi/content/full/61/19/7020   (3798 words)

  
 T Cell Receptor (TCR) Mini-Gene mRNA Expression Regulated by Nonsense Codons: A Nuclear-associated Translation-like ...
Nonsense mutations in the dihydrofolate reductase gene affect RNA processing.
Nonsense but not missense mutations can decrease the abundance of nuclear mRNA for the mouse major urinary protein, while both types of mutations facilitate exon skipping.
Nonsense mutations inhibit RNA splicing in a cell-free system: recognition of mutant codon is independent of protein synthesis.
www.jem.org /cgi/content/full/185/6/985   (5487 words)

  
 Mild muscular dystrophy due to a nonsense mutation in the LAMA2 gene resulting in exon skipping -- Di Blasi et al. 124 ...
Nonsense but not missense mutations can decrease the abundance of nuclear mRNA for the mouse major urinary protein, while both types of mutations can facilitate exon skipping.
The Lebanese allele at the low density lipoprotein receptor locus: nonsense mutation produces truncated receptor that is retained in endoplasmic reticulum.
Disruption of the splicing enhancer sequence within exon 27 of the dystrophin gene by a nonsense mutation induces partial skipping of the exon and is responsible for Becker muscular dystrophy.
brain.oxfordjournals.org /cgi/content/full/124/4/698   (3052 words)

  
 Mutations in Eukaryotic Release Factors 1 and 3 Act as General Nonsense Suppressors in Drosophila -- Chao et al. 165 ...
Mutations in Eukaryotic Release Factors 1 and 3 Act as General Nonsense Suppressors in Drosophila -- Chao et al.
nonsense suppression due to readthrough of stop codons and are
a subset of nonsense alleles are subject to suppression.
www.genetics.org /cgi/content/abstract/165/2/601   (348 words)

  
 Infrequent Translation of a Nonsense Codon Is Sufficient to Decrease mRNA Level -- Buzina and Shulman 10 (3): 515 -- ...
Infrequent Translation of a Nonsense Codon Is Sufficient to Decrease mRNA Level -- Buzina and Shulman 10 (3): 515 -- Molecular Biology of the Cell
Infrequent Translation of a Nonsense Codon Is Sufficient to Decrease mRNA Level
Nonsense mutations in the human beta -globin gene lead to unexpected levels of cytoplasmic mRNA accumulation
www.molbiolcell.org /cgi/content/abstract/10/3/515   (490 words)

  
 Nonsense mutations in the human beta -globin gene lead to unexpected levels of cytoplasmic mRNA accumulation -- ...
Nonsense mutations in the human beta -globin gene lead to unexpected levels of cytoplasmic mRNA accumulation -- Romão et al.
Generally, nonsense codons 50 bp or more upstream of the 3'-most intron of the human
associated with nonsense mutations in the last exon.
www.bloodjournal.org /cgi/content/abstract/96/8/2895   (690 words)

  
 Disruption of the Splicing Enhancer Sequence within Exon 27 of the Dystrophin Gene by a Nonsense Mutation Induces ...
Disruption of the Splicing Enhancer Sequence within Exon 27 of the Dystrophin Gene by a Nonsense Mutation Induces Partial Skipping of the Exon and Is Responsible for Becker Muscular Dystrophy -- Shiga et al.
Heterozygous Nonsense Mutation in Exon 3 of the Growth Hormone Receptor (GHR) in Severe GH Insensitivity (Laron Syndrome) and the Issue of the Origin and Function of the GHRd3 Isoform
A nonsense mutation in the fibrillin-1 gene of a Marfan syndrome patient induces NMD and disrupts an exonic splicing enhancer
www.jci.org /cgi/content/abstract/100/9/2204   (858 words)

  
 Mild muscular dystrophy due to a nonsense mutation in the LAMA2 gene resulting in exon skipping -- Di Blasi et al. 124 ...
Mild muscular dystrophy due to a nonsense mutation in the LAMA2 gene resulting in exon skipping -- Di Blasi et al.
Mild muscular dystrophy due to a nonsense mutation in the LAMA2 gene resulting in exon skipping
Nonsense mutations outside the splicing consensus sequence have
brain.oxfordjournals.org /cgi/content/abstract/124/4/698   (278 words)

  
 The effect of nonsense codons on splicing: A genomic analysis -- ZHANG et al. 9 (6): 637 -- RNA
The effect of nonsense codons on splicing: A genomic analysis -- ZHANG et al.
The effect of nonsense codons on splicing: A genomic analysis
However, nonsense codon frequencies in pseudo exons and in regions
www.rnajournal.org /cgi/content/abstract/9/6/637   (229 words)

  
 Treatment of Allergic Airway Inflammation and Hyperresponsiveness by Antisense-induced Local Blockade of GATA-3 ...
Local treatment with control oligonucleotides did not change significantly the number of GATA-3–positive cells in the lung compared with OVA-sensibilized airways (nonsense and mismatched oligonucleotide treatment is shown in E and D, respectively), although mismatched DNA led to a reduction in the average number of GATA-3–expressing cells per HPF (bottom panel).
AS-GATA, GATA-3 antisense; MM-GATA, mismatched GATA-3; NS-GATA, nonsense GATA-3; OVA, OVA-immunized mice.
Lung tissues taken from sham (saline)- sensitized mice (A and B) and OVA-immunized mice treated with nonsense DNA (G and H) are shown as control.
www.jem.org /cgi/content/full/193/11/1247   (8155 words)

  
 Luboš Motl's reference frame: Category theory and physics
You know, category theory is the most abstract and "universal" part of rigorous mathematics, and it is also known as the (generalized) abstract nonsense.
If something is abstract, it does not have to be correct, and this particular thing just does not smell correct.
Even if it looks like abstract nonsense now, it may turn out to be quite useful.
motls.blogspot.com /2004/11/category-theory-and-physics.html   (3454 words)

  
 Recognition of Yeast mRNAs as "Nonsense Containing" Leads to Both Inhibition of mRNA Translation and mRNA Degradation: ...
Recognition of Yeast mRNAs as "Nonsense Containing" Leads to Both Inhibition of mRNA Translation and mRNA Degradation: Implications for the Control of mRNA Decapping -- Muhlrad and Parker 10 (11): 3971 -- Molecular Biology of the Cell
Recognition of Yeast mRNAs as "Nonsense Containing" Leads to Both Inhibition of mRNA Translation and mRNA Degradation: Implications for the Control of mRNA Decapping
that the recognition of a nonsense codon led to a decrease in
www.molbiolcell.org /cgi/content/abstract/10/11/3971   (630 words)

  
 Abstract nonsense -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-11-05)
Abstract nonsense -- Facts, Info, and Encyclopedia article
Abstract nonsense is a popular term used by (A person skilled in mathematics) mathematicians to describe certain kinds of arguments and concepts in (Click link for more info and facts about category theory) category theory.
This term is believed to have been coined by the mathematician (Click link for more info and facts about Norman Steenrod) Norman Steenrod, himself one of the developers of the categorical point of view.
www.absoluteastronomy.com /encyclopedia/a/ab/abstract_nonsense.htm   (139 words)

  
 A Hox gene mutation that triggers nonsense-mediated RNA decay and affects alternative splicing during Drosophila ...
Nonsense mutations are usually assumed to affect protein function
Buhler,M., Wilkinson,M.F. and Muhlemann,O. (2002) Intranuclear degradation of nonsense codon-containing mRNA.
Valentine,C.R. (1998) The association of nonsense codons with exon skipping.
nar.oxfordjournals.org /cgi/content/full/31/14/3873   (4325 words)

  
 An Alternate Translation Initiation Site Circumvents an Amino-Terminal DAX1 Nonsense Mutation Leading to a Mild Form of ...
The position of the Q37X nonsense mutation described in this report is also shown along with those of W39X, Y399X (another naturally occurring mutation that is associated with a severe AHC phenotype), and an artificial F448X mutant that removes the putative AF2 domain.
nonsense or frameshift mutations that cause a premature termination
Sossi V, Giuli A, Vitali T, Tiziano F, Mirabella M, Antonelli A, Neri G, Brahe C 2001 Premature termination mutations in exon 3 of the SMN1 gene are associated with exon skipping and a relatively mild SMA phenotype.
jcem.endojournals.org /cgi/content/full/88/1/417   (4307 words)

  
 Binary specification of nonsense codons by splicing and cytoplasmic translation -- Thermann et al. 17 (12): 3484 -- The ...   (Site not responding. Last check: 2007-11-05)
Binary specification of nonsense codons by splicing and cytoplasmic translation -- Thermann et al.
Premature translation termination codons resulting from nonsense or frameshift mutations are common causes of genetic disorders.
Rapid Deadenylation Triggered by a Nonsense Codon Precedes Decay of the RNA Body in a Mammalian Cytoplasmic Nonsense-Mediated Decay Pathway
embojournal.npgjournals.com /cgi/content/abstract/17/12/3484   (1757 words)

  
 Nonsense-mediated decay microarray analysis identifies mutations of EPHB2 in human prostate cancer - Nature Genetics   (Site not responding. Last check: 2007-11-05)
The identification of tumor-suppressor genes in solid tumors by classical cancer genetics methods is difficult and slow.
for the genome-wide identification of genes with biallelic inactivation involving nonsense mutations and loss of the wild-type allele.
Additional frameshift, splice site, missense and nonsense mutations are present in clinical prostate cancer samples.
www.nature.com /cgi-taf/DynaPage.taf?file=/ng/journal/v36/n9/abs/ng1408.html   (464 words)

  
 C-Terminal Truncated Dystrophin Identified in Skeletal Muscle of an Asymptomatic Boy with a Novel Nonsense Mutation of ...   (Site not responding. Last check: 2007-11-05)
C-Terminal Truncated Dystrophin Identified in Skeletal Muscle of an Asymptomatic Boy with a Novel Nonsense Mutation of the Dystrophin Gene -- SUMINAGA et al.
C-Terminal Truncated Dystrophin Identified in Skeletal Muscle of an Asymptomatic Boy with a Novel Nonsense Mutation of the Dystrophin Gene
with a nonsense mutation in the dystrophin gene.
www.pedresearch.org /cgi/content/abstract/56/5/739   (294 words)

  
 At Least One Intron Is Required for the Nonsense-Mediated Decay of Triosephosphate Isomerase mRNA: a Possible Link ...
Mammalian cells have established mechanisms to reduce the abundance of mRNAs that harbor a nonsense codon and prematurely
a nonsense codon residing in exon 6 and intron 6.
Buzina, A., Shulman, M. Infrequent Translation of a Nonsense Codon Is Sufficient to Decrease mRNA Level.
mcb.asm.org /cgi/content/abstract/18/9/5272   (1561 words)

  
 A Myosin Missense Mutation, Not A Null Allele, Causes Familial Hypertrophic Cardiomyopathy -- Nishi et al. 91 (12): ...
at codon 54 (exon 3; nonsense mutation) and codon 870 (exon 22;
the nonsense mutation was present in the proband, his unaffected
heterozygous for the missense mutation and the nonsense mutation, and
circ.ahajournals.org /cgi/content/full/91/12/2911   (4007 words)

  
 Nonsense-Mediated Decay of Mutant waxy mRNA in Rice -- Isshiki et al. 125 (3): 1388 -- PLANT PHYSIOLOGY
A premature nonsense codon generated by the mutation is double underlined.
Dietz HC, Valle D, Francomano CA, Kendzior RJ Jr, Pyeritz RE, Cutting GR (1993) The skipping of constitutive exons in vivo induced by nonsense mutations.
van Hoof A, Green PJ (1996) Premature nonsense codons decrease the stability of phytohemagglutinin mRNA in a position-dependent manner.
www.plantphysiol.org /cgi/content/full/125/3/1388   (4713 words)

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