We generalize the Hadwiger theorem on line transversals to collections of compact convex sets in the plane to the case where the sets are connected and the transversals form an arrangement of pseudolines. The proof uses the embeddability of pseudoline arrangements in topological affine planes. In 1940 Santaló showed [8], by an example, that Vincensini’s proof [9] of an extension of Helly’s theo...

In a number of practical scenarios, such as video conferencing and visual human/computer interaction, objects that belong to a well defined class are segmented, normalized, and encoded, after which they are stored and/or transmitted, and subsequently reconstructed. The Karhunen-Loève Transform (KLT) optimally concentrates the signal power in a relatively small number of uncorrelated coefficient...

Let G be a graph embedded in the plane and let A be an arrangement of pseudolines intersecting the drawing of G. An aligned drawing of G and A is a planar polyline drawing Γ of G with an arrangement A of lines so that Γ and A are homeomorphic to G and A. We show that if A is stretchable and every edge e either entirely lies on a pseudoline or intersects at most one pseudoline, then G and A have...

The TRiC/CCT chaperonin is a 1-MDa hetero-oligomer of 16 subunits that assists the folding of proteins in eukaryotes. Low-resolution structural studies confirmed the TRiC particle to be composed of two stacked octameric rings enclosing a folding cavity. The exact arrangement of the different proteins in the rings underlies the functionality of TRiC and is likely to be conserved across all eukar...

The objective of the study was to evaluate effects glutamine and glutamate (Gln/Glu) on growth performance immune response nursery pigs fed different digestible lysine content. Two hundred sixteen piglets, weaned at 21 days old, were assigned a randomized block design according their initial body weight (BW), in 2 × factorial arrangement with two levels (control-lys low-lys) Gln/Glu (0 12 g kg-...

Twin-row ridge cultivation is widely used in soybean planting northern China. In order to find the optimal parameters of agronomy, twin-row planter with subsoiling was designed. Field experiments were conducted evaluate effects plant arrangements and cluster densities on growth grain yield under different tillage treatments. The experiment a randomised complete block design consisting 20 treatm...

An incomplete 8 x 8 Latin square trial (4-wk periods; 12 wk total) using 32 multiparous and 16 primiparous Holstein cows was conducted to assess the production response to crude protein (CP), digestible rumen-undegraded protein (RUP), and rumen-protected Met (RPM; fed as Mepron; Degussa Corp., Kennesaw, GA). Diets contained [dry matter (DM) basis] 21% alfalfa silage, 34% corn silage, 22 to 26% ...

Abstract The objective of this work was to analyze structurally the pods and seed coats soybean (Glycine max) cultivars, as well determine quality seeds when subjected deterioration by weathering in pre-harvest. A 7×3 factorial arrangement used – seven cultivars three volumes simulated rainfall (0, 54, 162 mm). Exposure R8 phenological stage. Then, plants were taken a greenhouse, where they kep...

Abstract: Analyses of germination seeds under artificial stress conditions are tools for a better understanding the survival and adaptation capacity species natural conditions. Therefore, aim this study was to evaluate effect priming on seed germination, breaking dormancy, length Urochloa brizantha seedlings water restriction salt A completely randomized experimental design used with four repli...

An experiment was conducted to study the effects of enzyme and phytogenic product (thymol+carvacrol) on the ileal microbial population and jejuna and ileal histomorphology of broilers fed wheat based diet. The experiment was conducted as a 2 × 3 factorial arrangement with 2 levels of enzyme endofeed W (0 and 0.05%) and 3 levels of next enhance 150® (0, 100 and 200 mg/kg). Each of the 6 dietary ...