Báo cáo khoa học: "Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: nutrient supplies to the soil through both litter and throughfall" ppt

Báo cáo khoa học: "Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return" pot

... 36], taking into account the acidity of the soils of the Sierra de Gata mountains. The monthly variations in the potentialreturn of elements to the soil through litter (table ... year-1), but they areOriginal article Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient returnJuan ... than the oaks, with N and Ca predominant in the buds, Ca and Zn in the branches, K in the fruits, and aboveall Fe and Cu in the other plant remains. In all the forests...

Báo cáo khoa học: "Nutrient cycling in deciduous forest ecosystems of the Sierra de Gata mountains: nutrient supplies to the soil through both litter and throughfall" ppt

... bioelement supplies to the soil by the litter of thesespecies and by throughfall with a view to defining their role in the soil and, more gen-erally, in ecosystem bioelement ... J.F., Martin A., Santa Regina I., Nutri-ent cycling in deciduous forest ecosystems of the Sierra de Gata mountains: aboveground litter production and potential nutrient return, ... Afurther aim is to attempt to estimate the trueminimum annual nutrient input to the soil. Study of the decomposition of oak and chest-nut leaves was followed using the...

Báo cáo khoa học: Protein transport in organelles: Dual targeting of proteins to mitochondria and chloroplasts ppt

... amount of protein. An understanding of why dual targeting occurs will require the evolution-arily history of dual targeting to be determined in more detail in terms of when it arose and whether ... mitochondria and chloroplasts. The structures of binding of targeting peptides to mammalian and plant Tom20s not only revealed the molecular details of binding [54,55], but also prompted the hypothesis of ... mechanism to increase the complexity of proteomes is the editing of transcripts (both in nuclear and organelle genomes) [4,5]. Dual targeting of proteins does not increase the number of proteins in...

Báo cáo khoa học: "Age Prediction in Blogs: A Study of Style, Content, and Online Behavior in Pre- and Post-Social Media Generations" ppt

... with the earlier shifts at 1977 and 1979, SMS messaging coincide with both the earlier and later shifts at 1979 and 1982, and the social networking sites, MySpace and Facebook coincide with the ... MySpace. In the future we plan on using age and othermetadata to improve results in larger tasks suchas identifying opinion, persuasion and powerby targeting our approach in those tasks to the identiﬁed ... on their age at the time of the experiment, whether in the 10’s, 20’sor 30’s age bracket. They identify interestingchanges in content and style features across cat-egories, in which they include...

Báo cáo khoa học: E2A participates in a ﬁne control of pre-mature B-cell apoptosis mediated by B-cell receptor signaling via transcriptional regulation of survivin, IAP2 and caspase-8 genes pot

... result of decreased caspase-8 (and probably caspase-9) activity, and the elevated protein (and also mRNA) levels of the inhibitors survivin and IAP2. As a result, the slow diminution of the proteinlevel ... by 24 h in E2A)/), i.e. the rate of decrease in the amount of ICAD in the mutant wasslower than that in DT40. Thus, in E2A)/), in the presence of PMA/ionomycin, the time courses of alter-ations ... cascade pathway. However, understanding of the participation of most B cell-speciﬁc factors in the apoptotic process has remained elusive.Lack of E2A partially prevents the apoptotic celldeath...

Báo cáo khoa học: "Centrality Measures in Text Mining: Prediction of Noun " docx

... gjk is the number of geodesics linking node j and k, gjk(ni) is the number of geodesics linking the two nodes that contain node i. Betweenness centrality is widely used because of its ... with the actors denoted by the nodes and the relations by the edges or links. To determine which actors are prominent, a measure called centrality is intro-duced. In practice, four types of ... cen-trality to represent the prominence of a NP in the text, not only does the kind of the centrality matter, but also the way of forming the NP network. Overall, the heuristic of using centrality...

Báo cáo khoa học: Thiamin diphosphate in biological chemistry: analogues of thiamin diphosphate in studies of enzymes and riboswitches pot

... 3-dea-zaThDP and oxalyl CoA was solved and this revealed both the CoA binding site and the ordering of the C-terminus of the protein to form a lid over the CoAchain (PDB entry 2JI6) [34]. In the case of ... the enzymes involved in thiamin biosynthesis, transport and the salvaging of precursors to the thiazole and pyrimidine moieties of ThDP. Depending on the organ-ism, they can, when bound to their ... structure). Depending on the ThDP-dependent enzyme involved, the enamine canattack a number of electrophilic species. In the case of PDC, protonation of the enamine occurs and ﬁnallyrelease of acetaldehyde...

Báo cáo khoa học: "Growth stresses in tension wood: role of microfibrils and lignification" pptx

... of microfibrils generated posi-tively in their axial direction and the com-pressive stress that is generated by the deposition of lignin into the gaps of the microfibrils ... of the other layers and the lumen, and converted it into digitalimages of 512 x 512 pixels, and the cross-sec-tional area of the gelatinous layers was mea-sured. The ... on the measuring position in longitudinal and tangential directions. The measuring positionwas arranged selectively on the upper side of aleaning stem so as to determine...

Báo cáo khoa học: " Water flux in boreal forest during two hydrologically contrasting years; species specific regulation of canopy conductance and transpiration" pps

... decrease in gross pho-tosynthesis of about 20 % for the summerperiod of 1994 indicates that the magni-tude of production loss in the region isconsiderable. In the ... conditions in the middle of the day, whereas similaritydecreases at the onset and the end of the day, when the effect of tree capacitanceincreases and the accuracy of the sap ... fitting, weights are included in the sum of squares to be minimized. To avoidadding a sub-function of air temperature (Ta)into equation (2), gc was set to zero for the days...

Báo cáo khoa học: "Lymphangiosis carcinomatosa in squamous cell carcinomas of larynx and hypopharynx – value of conventional evaluation and additional immunohistochemical staining of D2-40" ppsx

... evaluation of staining, manuscript. IN was involved in the evaluation of staining, results. MS, RH, CV were involved in clinicaldata and details, discussion. IH, BP were involved in sta-tistical ... sections were examined. In large tumors, espe-cially areas of the lateral and deep tumor borders (front of invasion) were investigated. The histomorphological diagnoses of SCC and its gradingwas reevaluated ... helpful in the daily routine. Nodalmetastasizing was not found in 33% of tumors showingL1 defined from the results of either methods. The value ishigher than that from the results of only...

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