Tài liệu Báo cáo khoa học: "Fragments and Text Categorization" pptx

... Fragments and Text Categorization Jan Bla ˇ t ´ ak and Eva Mr ´ akov ´ a and Lubo ˇ s Popel ´ ınsk ´ y Knowledge Discovery Lab Faculty of ... used: 20 Newsgroups 1 (202 randomly chosen documents from each class were used. The mail header was re- moved so that the text contained only the body of the message and in some cases, replies) Reuters-21578, ... which consists of fragments...

Ngày tải lên: 20/02/2014, 16:20

... Carbohydrate, glycolysis Lactococcus lactis Modeling Pi explicitly and regulation of pyruvate kinase (by Pi and FBP), PFK (by PEP) and GAPDH (by NADH) are critical to describe observations (rapid increase in PEP, Pi and gradual decrease ... metabolite concentrations and metabolic fluxes, both measured and nonmeasured. A general parameter sensitivity analysis is carried out to deter...

Ngày tải lên: 14/02/2014, 14:20

... H4-K5, K8 and K12 acetylation [136–138]. In yeast, this group is made up of NuA4 and Piccolo NuA4 which both uti- lize Esa1 as the HAT, and Esa1 was found to be essen- tial for H4-K5, K8 and K12 ... acetylation and deacetyla- tion, and transient recruitment of remodellers and transcription factors. A cycle of transcription commences with the recruit- ment of transcription factor...

Ngày tải lên: 14/02/2014, 18:20

... tumors and cell lines, miR-17- 5p and miR-20a are induced in a manner that depends on cyclin D1 and repress the expression of cyclin D1. Hence, miR-17-5p ⁄ 20a and cyclin D1 form a feedback loop and ... transcription factors E2F and Myc but, in turn, miR-17-92 downregulates the expression of E2F and Myc [52]. In tumor progression, the tran- scription repressors ZEB1 and SIP1...

Ngày tải lên: 14/02/2014, 19:20

... cancer. DNMT 3A and 3B DNMTs 1, 3A, and 3B are key DNA methylation enzymes. Recent studies in human cells have demon- strated that PRC2 and DNMTs are physically and functionally linked [76], and that ... (Mathworks, Natick, MA, USA), we compared localization and strand direction between miRNAs and transcripts (Refseq genes and mRNAs). Intragenic and intergenic miRNAs were de...

Ngày tải lên: 14/02/2014, 19:20

... disease and that, when miR-1 is overexpressed in normal and infracted rat hearts, this results in a slowed conduction velocity, excessively prolonged repolarization and the induction of PVCs and ... arrhythmias. On the other hand, blocking miR-1 function with antisense oligoribonucleotides was found to normalize the expression of Cx43 and Kir2.1, prevent QRS and QT prolongation,...

Ngày tải lên: 14/02/2014, 19:20

... binding and cleav- age by ribonuclease A and variants at Lys7, Arg10, and Lys66. Biochemistry 37, 12121–12132. 31 Anderson DG, Hammes GG & Walz FG Jr (1968) Binding of phosphate ligands to ... where I i (h) and I(h) are the ith and the mean measurements of the intensity of reflection h, respectively. R cryst = R h |F o ) F c | ⁄ R h F o , where F o and F c are the observed and...

Ngày tải lên: 14/02/2014, 22:20

... activation site (R144, N154, I152) and three in the second (F127, M436 and H428), and found that Ap 4 A and ADP interact with the same site, but the sites for ATP and BPG remain uncertain. The structural ... cN-II, cN-III, cN-IA and cN-IB, and both cytosolic and mitochondrial 5¢(3¢)-deoxyribonu- cleotidases [5]. Even though all soluble 5 ¢-nucleotidases share the same reaction...

Ngày tải lên: 15/02/2014, 01:20

... HPRT and hypoxanthine. (C) PRTFDC1 and guanine. (D) HPRT and guanine. Table 2. K m and V max values for Hx and G in the presence of 1 mM PRPP, determined using the DE-81 filter paper assay and ... domain is mainly built up by residues from the C-terminus and consists of a two-stranded anti-parallel b-sheet composed of b2 and b9 and an a-helix from the C-terminus (Fig. 1A). Th...

Ngày tải lên: 15/02/2014, 01:20

... ferre- doxins, Fd1 and Fd2, from this bacterium are considered to serve as low-potential electron donors for this key reaction [8]. POR is distributed among archaea, bacteria and anaerobic protozoa, and is ... phylogenetically related and the heterotetra- meric enzyme has been proposed to be the common ancestor that underwent gene rearrangement and fusion to generate homo- and het...

Ngày tải lên: 16/02/2014, 09:20