báo cáo khoa học: " Introducing oral tobacco for tobacco harm reduction: what are the main obstacles?" potx

... citation purposes) Harm Reduction JournalOpen AccessCommentary Introducing oral tobacco for tobacco harm reduction: what are the main obstacles?Yves Martinet*1,2, Abraham Bohadana1,3 and ... anti -tobacco lobby shun the idea of evaluating oral tobacco use for tobacco HR? What is more important, pragmatism or dogmatism? Tobacco smokers are the problemWhereas users of other drugs are relatively ... ambivalence about their status.On one hand, they usually know that they are tobacco- dependent, but, on the other hand, they often like to seethemselves as free, and responsible for their personal...

Tài liệu Báo cáo khoa học: A facile method for expression and puriﬁcation of the Alzheimer’s disease-associated amyloid b-peptide pdf

... [41]. The use of thrombin significantlyincreases the cost of the purification, and the require-ment for HPLC increases the length and complexity of the purification procedure. Moreover, as with the studies ... (Fig. 1). The requirement for a start codonadds a methionine residue at the N-terminus; hence, the peptides expressed here are referred to as Ab(M1–40) andAb(M1–42). The synthetic gene for Ab(M1–40) ... concentrated mannerat the top of the column, or, if bound to the resinprior to packing the column, the salt gradient concen-trates the peptide on its way out of the column. The molecular mass...

Tài liệu Báo cáo khoa học: "Generalized Hebbian Algorithm for Incremental Singular Value Decomposition in Natural Language Processing" potx

... vector is givenon the left, and the right on the right, that isto say, the fir s t letter in the bigram is on the left and the second on the right. The first twosingular vector pairs are dominated ... accurate as the directionof the singular vectors settles. These appr ox-imations will therefore not interfere with the accuracy of the final result, though they mightinterfere with the rate of ... in that the singular vectors, U and V , of the data matrix,A, are simply the eigenvectors of A ∗ ATandAT∗ A, r espectively, and the singular values,Σ, are the square-roots of the correspondingeigenvalues.2.1...

Báo cáo khoa học: "Phrase Table Training For Precision and Recall: What Makes a Good Phrase and a Good Phrase Pair?" doc

... phrases on the other side is signiﬁcantly biased. For instance, the posterior of one foreign phrase isfar larger than that of the others. We use the entropyof the posterior distribution as the conﬁdence ... the En-glish phrase can be aligned correctly. On the otherhand, high entropy implies ambiguity presented indiscriminating the correct foreign phrase from the others from the viewpoint of the ... as the summa-tion of the likelihood function over all valid hiddenword alignments.1 The word source and target are in the sense of word align-ment direction, not as in the source-channel formulation.More...

Báo cáo khoa học: "A Collaborative Framework for Collecting Thai Unknown Words from the Web" pot

... col-lected from the Web are performed. The experi-ments are designed to test each of the two m ainsteps of the framework. Variation of morphologi-cal analysis are tested for the unknown-word ... unknown-word candidates which are presented to the users for veriﬁcation. The approvedunknown words could be combined with the set of existing words in the lexiconto improve the performance of many NLPtasks ... participants. The ap-proved unknown words are then added to the ex-isting lexicon along with the other related infor-mation such as meaning and PO S (part of speech).This paper focuses on the underlying...

báo cáo khoa học: " Single nucleotide polymorphisms for assessing genetic diversity in castor bean (Ricinus communis)" potx

... we compared the pairwise genetic dis-tance matrix of genotypes to the geographic distancematr ix. The correlation of the actual data matrices werethen compare d to the correlations for 1000 ... analogs) are typically based upon these r are SNPsand are not directly comparable to u nbiased SNP dis-covery methods in other species. Theref ore, our results are not directly comparable with other ... equivalent to the same number ofloci in a genetically diverse species, once the rare SNPsarediscovered.Third,themoreevolutionaryconservednat ure of SNPs makes them less subject to the prob lemof...

báo cáo khoa học: " Lutein is needed for efficient chlorophyll triplet quenching in the major LHCII antenna complex of higher plants and effective photoprotection in vivo under strong light" pps

... by SDS-PAGE of the fractions, and HPLCanalysis of the pigment content of the fractions. The results of the fractionation are shown in Figure 1A. Fivebands are visualized in the WT: Band 1 is ... photopro-tection [49]. The over-operation of these mechanismslikely compensates for the primary lesion brought aboutby the lack of lutein. What is the primary effect of the lut2.1 mutation? Previouswork ... normalization for the *Chl signal, weobserved that absorbance changes due to lutein triplet for- mation were 1.5-fold larger than for violaxanthin, and the kinetics for triplet formation were faster for...

Báo cáo khoa học: Variants of b2-microglobulin cleaved at lysine-58 retain the main conformational features of the native protein but are more conformationally heterogeneous and unstable at physiological temperature potx

... Whatever the origin of the conformationalequilibrium that gives rise to the slow refolding step ofb2m, the proposed correspondence of the second formobserved in the cK58-b2m spectra with the ... conformational heterogeneity. The proton chemical shifts of the alternativeconformer (I2) of cK58-b2m are comparedwith the corresponding values of the nat-ively folded form of cK58-b2m in the ... previousstudies of other b2m variants [21,22]. The best estimateof the equilibrium populations of the fully folded andI2forms for cK58-b2m at 298 K was obtained byusing, for each conformer, the pair...

Báo cáo khoa học: " A predictive model for the level of sIgA based on IgG levels following the oral administration of antigens expressed in Sacchromyces cerevisiae" pdf

... ...

Xem thêm