Báo cáo khoa học: "A Descriptive Characterization of Tree-Adjoining Languages (Project Note)" ppt

... A Descriptive Characterization of Tree-Adjoining Languages (Project Note) James Rogers Dept. of Computer Science Univ. of Central Florida, Orlando, FL, USA ... et al., 1997). The scope of each of these applications is limited, to some extent, by the fact that there are no such descriptive characterizations of classes of languages beyond the context-free. .....

Ngày tải lên: 23/03/2014, 19:20

... the definition of the notion of a proposition. Propositions are defined as functions from a set of times TI to the set of truth values true and false. Declarative sentences of natural language ... capture adequately the truth conditions of (7). 3.3 Tense and Quantified NP The third type of inadequacy of standard tense logic has to do with the interaction of tense and...

Ngày tải lên: 08/03/2014, 18:20

... Fig. 1). Often, this kind of cleavage is followed by cyclization of the N-terminal glutamine to form pyroglutamic acid. The tryptic peptide mass fingerprint of TYR2 contained a peptide mass of 2136.108 ... 2136.196 Da). The identity of this peptide was then confirmed by MALDI-TOF ⁄ TOF fragment ion analysis, where partial sequences of this peptide were obtained from the ladders of...

Ngày tải lên: 19/02/2014, 06:20

... an ORF of 678 bp, a 5¢ UTR of 131 bp and a 3¢ UTR of 163 bp including 20 bp of poly(A) tail. The PsCBL ORF encodes a protein of 225 amino acid residues with a calculated molecular mass of 25.9 ... in response to array of stresses. The exist- ence of a large family of CIPK and CBL genes has been reported in Arabidopsis and rice [15]. However, the details of the role of th...

Ngày tải lên: 19/02/2014, 07:20

... sug- gesting a competitive mode of action. Uptake of Bip-[ 3 H]Pro by SKPT cells After characterization of Bip-Pro as a very high-affin- ity and enzymatically stable substrate of PEPT1 and PEPT2, the ... Bip-[ 3 H]Pro uptake across the apical membrane of SKPT cells. Time-dependent uptake of Bip-[ 3 H]Pro Fig. 3. Characterization of the interaction of Bip-Pro with PEPT1 and...

Ngày tải lên: 07/03/2014, 05:20

... LB medium after 4 h of IPTG induction (Fig. 1). Purification and refolding of Rv1399c Given the large quantity of insoluble material obtained [up to 160 mg of protein from 6 L of cell culture (Table ... characteristic of members of the a/b hydrolase fold family. Within this family, the recent crystal structure of the M. tuberculosis antigen 85C (Ag85C) [4], a mycolyl- transfera...

Ngày tải lên: 07/03/2014, 16:20

... summary of the purification is shown in Table 1. Figure 2 shows the UV ⁄ visible spec- trum of phCoADR, which is typical of a flavoprotein, with a 280 ⁄ 460 ratio of 11.1. Production and assay of the ... Addition of a second of NADPH results in the formation of an apparent FAD-NAD(P)H complex. The behavior of this enzyme is quite different from the mesophilic staphylococcal ve...

Ngày tải lên: 07/03/2014, 17:20

... The activity of Pf-TDH was significantly increased by the addition of 2mm CoCl 2 (relative activity to that of the standard reaction 170%) and not by the addition of 2 mm ZnCl 2 or one of the other ... describe the production and characterization of one of the selected enzymes, a novel l-threonine dehydrogenase, Pf-TDH (PF0991). The P. furiosus tdh gene encodes a protein of 3...

Ngày tải lên: 16/03/2014, 14:20

... nutri- tional value of plant species short of S-containing amino acids. By producing transgenic d-CDes plants this goal might be reached. Experimental procedures Growth and harvest of plants Seeds of Arabidopsis ... concentrations of Na 2 S were prepared, treated in the same way as the assay samples, and were used for the quantification of the enzymatically formed H 2 S. Measuremen...

Ngày tải lên: 16/03/2014, 18:20

... nonspecific activity of the mutant, about fourfold higher than that of Aspf1 as deduced from the volumogram analysis of the corresponding gels. Cytotoxic activity The cytotoxic activity of Aspf1 and ... and 200 ng of protein. The a-fragment (a) only appeared in the case of the wild-type protein. Identical results were obtained with 50 ng of protein (data not shown). (B) Incubatio...

Ngày tải lên: 16/03/2014, 19:20