báo cáo khoa học: "The effect of crosses made in Tribolium castaneum between lines selected for high and low responsiveness to conditioned medium" pdf

... is based on virgins.NoteThe effect on egg laying of crosses made in Tribolium castaneum between lines selected for high and low responsiveness to conditioned mediumBatia ... MOAVDepartment of Genetics, The Hebrew University of Jerusalem91904 Jerusalem, IsraelSummary Tribolium castaneum lines selected for high (HR) and low (LR) responsiveness of eggproduction ... to the conditioning of the medium were employed in crosses designed to determinethe direction of dominance for responsiveness. In all three populations, the cross between HR...

Tài liệu Báo cáo khoa học: The effect of small molecules in modulating the chaperone activity of aB-crystallin against ordered and disordered protein aggregation pdf

... theactivity of aB-crystallin against DTT-induced precipi-tation of insulin at intermediate and high concentra-tions, and it also increased the activity of aB-crystallin in preventing the aggregation ... that aB-crystallin most likelyemploys various methods of binding (or bindingmodes) in order to prevent the aggregation of stressedproteins. Some of these binding modes (or bindingsites) are ... aggregation of some proteins by acting on the unfolded state of theprotein and increasing the reversibility of unfolding[37]. Arginine had no effect on the stability of the pro-tein’s native...

Báo cáo khoa học: "The Effect of Translation Quality in MT-Based Cross-Language Information Retrieval" pptx

... n-grams indexes leads to comparable performance for Chinese IR. So in our experiments, we use bi-grams as index units. We conduct following runs to analyze the rela-tionship between MT performance ... cor-relation between the variation of translation qual-ity and the variation of retrieval effectiveness to analyze the relationship between MT perform-ance and CLIR performance. 4.1 Degradation of ... 1994 and 1995. It includes totally 164,789 documents. The topic set contains 54 topics. In the relevance judgment file, a binary indication of relevant (1) or non-relevant (0) is given. <top>...

Tài liệu Báo cáo khóa học: The effect of mutations surrounding and within the active site on the catalytic activity of ricin A chain pptx

... cytotoxic. The reductions in cytotoxcitycompared to native ricin were comparable to the decrease in catalytic activity against ribosomes in vitro for each of the substitutions except for ricin ... ricin, d, ricin R213A, j;andricinR213D, m.(B)ricin,d; ricin R258A, j, and ricin R258D, m;(C)ricin,d; ricin R48A, j.Fig. 2. Assessment of the N-glycosidase activity of RTA variants con-taining ... 235 [9]. Of theses residues, only Arg213 is in thevicinity of the active site of RTA. In order to establish therole of arginyl residues around the active site of RTA in the binding of rRNA,...

Tài liệu Báo cáo khoa học: "The Effect of Pitch Accenting on Pronoun Referent Resolution" ppt

... like to assert about the order of items in Cf. These hypotheses arise from the following chain of assumptions: (1) To analyze the effects of pitch accents on pronominals, it is necessary to ... theories of both centering and intonational meaning fail to predict the existence of pitch accented pronominals. Yet they occur felicitously in spoken discourse. To explain this, I emphasize ... psycholinguist and then HE insulted HIM. (after Lakoff, 1971) is felicitously understood to mean that after a slanderous introduction, Bill re- taliated in kind against John. What makes (1) felicitous...

Báo cáo khoa học: The effect of replacing the axial methionine ligand with a lysine residue in cytochrome c-550 from Paracoccus versutus assessed by X-ray crystallography and unfolding ppt

... perturbation of a number of electronic absorption bands and the appearance in thespectrum of new ones. One of these, a band at623 nm, grows into the spectrum indicating a changefrom low- to high- spin ... deviations for main- and side-chain atoms in the ligand loop contain-ing the K100 are however, observed. To accommodateK100 as a ligand a number of main-chain atoms aredisplaced relative to their ... 100 mm.Unfolding curves were assessed by the two-state model of equilibrium unfolding assuming linear baselines for native and unfolded protein, according to the method of Santoro and Bolen [64]:observable¼a...

Báo cáo khoa học: The effect of heme on the conformational stability of micro-myoglobin doc

... of attractive electrostatic interactions between Arg45 and Asp60 that are seen to lead to apo-lMb unfolding.Therefore, in addition to direct interaction with bind-ing residues, heme seems to ... investigation of heme recognition and bind-ing by proteins, and provides an example of protein folding induced by co-factor binding. Theoretical studies by molecular dynamics simulations onapo- and ... spanning residues 32–139, and named mini-myoglobin (mini-Mb), is capable of independent fold-ing into a native-like conformation, even in theabsence of heme [8]. Other deletion products and...

Báo cáo khoa học: "The effect of domain and text type on text prediction quality" pptx

... percentages of saved keystrokes between 27 and 34%; training on a differ-ent text type caused the scores to drop to percentages between 16 and 28%. In our case study, we compared a num-ber of training ... their speaking and writ-ing skills are impaired. For these patients, existingonline care platforms are often not easily accessi-ble. Aphasia, for example, hampers the exchange of information ... from29% to 56% of keystrokes saved.An important factor that is known to in uencethe quality of text prediction systems, is training562Proceedings of the 13th Conference of the European Chapter of...

Báo cáo khoa học: The effect of zinc oxide nanoparticles on the structure of the periplasmic domain of the Vibrio cholerae ToxR protein pot

... protein retaining more of its secondarystructures in the presence of salt than in its absence(Fig. 7), indicating the inhibitory role of salt on theinteraction. The periplasmic domain of ToxR ... 54 °C for free ToxRp and 33 °C for NP-conjugated ToxRp, respectively. Effect of ionic strength on binding of ToxRp to ZnO NPIf the interaction between a protein and an NPinvolves complementary ... theconformational changes of the periplasmic domain of ToxR (ToxRp) [30] induced by the interaction withZnO NPs of 2.5 nm in size (quite comparable to thesize of the protein). Urea- and guanidine...

Báo cáo khoa học: The effect of pH on the initial rate kinetics of the dimeric biliverdin-IXa reductase from the cyanobacterium Synechocystis PCC6803 pptx

... complete initial rate study, including the effect of pH on the kinetic parameters and site-directedmutagenesis studies, to gain an understanding of thefunction of sBVR-A in cyanobacteria and also to increase ... constant for the slope effect. For inhi-bition constants involving intercept effects, the reciprocal of the apparent Vmaxwas plotted against the concentration of inhibitory product and the inhibition ... saturating (100 lm) levels of NADPH and revealed that bilirubin is a mixedinhibitor against biliverdin at saturating levels of NADPH. Product inhibition experiments with bilirubinas an inhibitor...

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