984 resultados para Flexi-Bar


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La característisca més notable dels sistemes flexius és la resistència que ofereixen a la tasca lingüística d'establir relacions entre morfs i morfemes. En sistemes d'aquesta classe, en efecte, les relacions esmentades són molt complexes, i fugen de la biunicitat pròpia dels sistemes aglutinants. Aclarir aquestes relacions, il·lustrant-les des de l'angle del verb català, i suggerir mecanismes formals per tractar-les dins un esquema generatiu constitueixen, de fet, els dos objectius fonamentals del present article.

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Division site positioning is critical for both symmetric and asymmetric cell divisions. In many organisms, positive and negative signals cooperate to position the contractile actin ring for cytokinesis. In rod-shaped fission yeast Schizosaccharomyces pombe cells, division at midcell is achieved through positive Mid1/anillin-dependent signaling emanating from the central nucleus and negative signals from the dual-specificity tyrosine phosphorylation-regulated kinase family kinase Pom1 at the cell poles. In this study, we show that Pom1 directly phosphorylates the F-BAR protein Cdc15, a central component of the cytokinetic ring. Pom1-dependent phosphorylation blocks Cdc15 binding to paxillin Pxl1 and C2 domain protein Fic1 and enhances Cdc15 dynamics. This promotes ring sliding from cell poles, which prevents septum assembly at the ends of cells with a displaced nucleus or lacking Mid1. Pom1 also slows down ring constriction. These results indicate that a strong negative signal from the Pom1 kinase at cell poles converts Cdc15 to its closed state, destabilizes the actomyosin ring, and thus promotes medial septation.

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The use of precision farming tools in pesticide application technology can improve the techniques effectiveness during the spraying. Thus, this study aimed to compare automatic and manual systems to interrupt the syrup flow in the spray bar sections when applied in overlapped areas. The sprayings were carried out in eight places in completely randomized design. It was compared the spray consumption and the sprayed area in relation to the total area. The results indicated that in sprays performed with the automatic system there was an average savings of 17.2% of the sprayed volume. The sprayed area using the bar section's automatic control was an average 6.1% lower than the sprayed area with manual control.

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Megillat ha-Megalleh av Abraham bar Hijja (Spanien, 12. årh.) är bäst känd som en samling av messianska beräkningar. Men boken som helhet innehåller, vid sidan om beräkningarna, varierande innehåll såsom filosofi, bibeltolkning och astrologi. Bar Hijja framför en argumentering, inför det växande inflytandet på judarna från de kristna, för att den judiska religionen, och särskilt judarnas väntan på den messianska tiden, fortfarande är giltiga. Bar Hijja utvecklar, med hjälp av den judiska traditionen, arabiska vetenskapliga och andra källor samt omdefinierade kristna ideér, en syn på historien som en determinisk händelselopp som består av goda och dåliga tider men eventuellt skall kulminera i en messiansk tid för judarna. Boken innehåller även en omfattande astrologisk kommentar på historien, som bland annat beskriver uppkomsten och historien av de kristna och muslimska världsmakterna, samt deras förhållanden med judar. Boken är tydligt avsett att övertyga judarna att förbli judar, genom att argumentera med hjälp av både judiskt och ickejudiskt material, att oavsett läget i exil har de den framtid som de väntat för. I det medeltida sammanhanget syns detta inte enbart som en religiös fråga utan också som en politisk strävan till att säkerställa det judiska samfundets framtid.

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Large amplitude bus bar aeolian vibration may lead to post insulator damage. Different damping applications are used to decrease the risk of large amplitude aeolian vibration. In this paper the post insulator load caused by the bus bar aeolian vibration and the effect of damping methods are evaluated. The effects of three types of bus bar connectors and three types of primary structures are studied. Two actual damping devices, damping cable and their combinations are studied. The post insulator loads are studied with strain gage based custom made force sensors installed on the both ends of the post insulator and with the displacement sensor installed on the midpoint of the bus bar. The post insulator loads are calculated from the strain values and the damping properties are determined from the displacement history. The bus bar is deflected with a hanging weight. The weight is released and the bus bar is left to free damped vibration. Both actual bus bar vibration dampers RIBE and SBI were very effective against the aeolian vibration. Combining vibration damper with damping cable will increase the damping ratio but it may be unnecessary considering the extra effort. Bus bar connector type or primary structure have no effect on the vertical load. The bending moment at the post insulator with double sided bus bar connector is significantly higher than at the post insulator with single sided bus bar connector. No reliable conclusions about bus bar connector type effect can be done, but the roller bearing type or central bearing type connector may reduce the bending moment. The RHS steel frame as primary structure may increase the bending moment peak values since it is the least rigid primary structure type and it may start to vibrate as a response to the awakening force of the vibrating bus bar.