Báo cáo khoa học: Is there more to aging than mitochondrial DNA and reactive oxygen species? pot

... compilation ª 2009 FEBSREVIEW ARTICLE Is there more to aging than mitochondrial DNA and reactive oxygen species? Mikhail F. Alexeyev1,21 Department of Cell Biology and Neuroscience, University of ... is Keywordsantioxidants; lifespan extension;mitochondria; mitochondrial DNA degradation; mitochondrial DNA mutations; mitochondrial DNA repair; mitochondrial theory of aging; oxidative damageCorrespondenceM. ... that mtDNA mutagenesis is a stochastic process, and as long as ROS are pro-duced, there is a ﬁnite probability of ROS-mediatedmtDNA mutagenesis. To make the MTA plausible,mutagenesis has to occur...

Tài liệu Báo cáo khoa học: "Is There Natural Language after Data Bases?" pptx

... automated poetry comprehension device fails to meet this criterion. 2. The task should be computationally tractable and grounded in an external validation test. Interfaces to as yet non-existent ... equally fundamental issue: What action should the system take? Should Smith be deleted from sales and added to marketing (and vice versa for Jones)? Or, should Smith and Jones remain fixed ... change to the 11 must confess that I would have to include myself in any group claiming adherence to data base query as a unify=ng task. I am still actively working in the area, and to some...

Báo cáo khoa học: High negative charge-to-size ratio in polyphosphates and heparin regulates factor VII-activating protease pdf

... a risk factor for atherosclerosis and liver ﬁbrosis, theregulation of FSAP activity is of major importance. FSAP is activated byan auto-catalytic mechanism, which is ampliﬁed by heparin. To ... leads to auto-catalytic activa-tion [4,5], followed by auto-proteolysis. This propen-sity to partial proteolysis has been used to determinethe domain responsible for binding to heparin and RNA. ... (platelet-derived growthfactor BB) [18]. The Marburg I polymorphism is asso-ciated with a higher risk for carotid stenosis [19], and, in comparison to wild-type FSAP, is not able to inhi-bit neointima...

Báo cáo khoa học: "Incremental Joint Approach to Word Segmentation, POS Tagging, and Dependency Parsing in Chinese" potx

... of dictio-naries is expected to make our joint model more ro-bust and enables us to investigate the contribution ofthe syntactic dependency in a more realistic setting.Therefore, we optionally ... SegTagDep takes a few timeslonger to achieve accuracies comparable to those ofSegTag+Dep/TagDep, it seems to present potential7This is consistent with Hatori et al. (2011)’s observationthat ... approach to Chinese POS tagging and dependency parsing (Liet al., 2011; Hatori et al., 2011); particularly, Ha-tori et al. (2011) proposed an incremental approach to this joint task, and showed...

Báo cáo khoa học: "Using Deep Morphology to Improve Automatic Error Detection in Arabic Handwriting Recognition" pot

... mistaken for thesemarkers (Darwish and Oard, 2002). Alternatively,these markers in handwritten text may be too small,light or closely-spaced to readily distinguish, caus-ing the system to ... in the N-best list that the word appears in to the total numberof hypotheses. These numbers are calculated usingthe original N-best hypothesis list, before the data is trimmed to H={1, 10}. ... informationcan be used to construct supplemental lexicons orlanguage models (Sari and Sellami, 2002; Magdy and Darwish, 2006).In comparison to (Magdy and Darwish, 2006),our paper is about error detection...

Báo cáo khoa học: "Using Mutual Information to Resolve Query Translation Ambiguities and Query Term Weighting" doc

... one is retained. For cross-language IR between Korean and English, i.e. between Korean queries and English documents, an easy way to handle query , translation is to use a Korean-English ... scheme is to give a large weight to the best candidate and divide the remaining quantity to assign equal weights to the rest of the candidates. In other words, the weight for the best candidate, ... pair candidate between wl and w2 are (motorcar, air), (automobile, air), and (car, air). Here because the weight of the word pairs (automobile, air) is W, = 0.83, the word "automobile"...

Báo cáo khoa học: "COMBINATORY CATEGORIAL RELATIONSHIP TO LINEAR GRAMMARS: GENERATIVE POWER AND CONTEXT-FREE REWRITING SYSTEMS"" pptx

... terminals (lexical items), VN is a finite set of nonterminals (atomic categories), S is a distinguished member of VN, f is a function that maps elements of VT U {e} to finite subsets of C(VN), ... i _< .} Although there is no type-raising rule, its effect can be achieved to a limited extent since f can assign type-raised categories to lexical items, which is the scheme employed ... generated by G is 2.3 Tree Adjoining Grammars A TAG [8,7] is denoted G = (VN, VT, S, I, A) where VN is a finite set of nontennlnals, VT is a finite set of terminals, S is a distinguished nonterminal,...

Tài liệu Báo cáo khoa học: "Some Pragmatic Issues in the Planning of Definite and Indefinite Noun Phrases" potx

... because he is probably not referring to a partic- ular tomato, but to whatever tomato fits his description. However, it is conceivable that he had a particular tomato in mind, and chose that ... Nadathur and Josh| (1983) adopt a s(rat%oS" that amounts to assuming that if D is believed to apply to R. then it is also mutually believed to apply to R unless there is reason to believe ... the son is capable of identifying his own fa- ther on the basis of knowledge he already has; therefore the plan for the hearer to identify the description is to do noth- ing. This is different...

Báo cáo khoa học: "Finding Word Substitutions Using a Distributional Similarity Baseline and Immediate Context Overlap" potx

... (the annotator has answered ‘yes’ to the thirdquestion) and nLeftHandEntailed is the number ofsentences where the left-hand relation is entailed(the annotator has answered ‘yes’ to the ﬁrst ... context of the verb is far more telling than the left one (potentially, objectsare more important than subjects). This is in linewith results reported by Alfonseca and Manandhar(2002).Our ... while Table 3 usesan expanded list of 200 contexts. Precision is the3Although no direct comparison with the worksof Szpektor et al. or Lin and Pantel is providedin this paper, we are in the...

Báo cáo khoa học: Procarboxypeptidase A from the insect pest Helicoverpa armigera and its derived enzyme potx

... restriction sites forXhoIandAvrII introduced to be able to subclone the cDNAinto the P. pastoris expression vector pPIC9. The cDNAwas introduced between the 5¢ promoter and 3¢ terminatorof the alcohol ... SacIandXhoI, T4 DNA ligase, Taq polymerase, deoxynucleotide stocks and N-gly-cosidase F were purchased from Roche. Salts and media forE. coli and P. pastoris growth were obtained from Sigma and ... Europe, Asia, Africa and Oceania. The zymogenof this carboxypeptidase (PCPAHa) has been expressed athigh levels in a Pichia pastoris system and shown to displaythe characteristics of the enzyme...

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