Most risk analysis studies in invasion biology have focused on the invasiveness of non-native species, even though some native species also can pose a high to environment and human well-being. This is especially true under current global change, which may cause dominant expand their range distribution substantial effects ecosystem. In this study, five plant Turkey was evaluated using standard s...

In this paper, we define X-slant helix in Euclidean 3-space and we obtain helix, slant helix, clad and g-clad helix as special case of the X-slant helix. Then we study Darboux, tangential darboux developable surfaces and their singular points. Especially we show that the striction lines of these surfaces are singular locus of the surfaces.

Introducción: En áreas urbanas, los canteros con especies ornamentales, brindan estructura y color, atraen polinizadores, funcionan como corredores ecológicos, acercan la naturaleza, ofrecen bienestar a seres humanos. La flora urbana, puede ser reservorio de biodiversidad, o fuente invasiones según criterios selección. Objetivos: Se estimó riqueza especies, formas vida, familias botánicas orige...

To investigate the role of helix formation in the folding of protein L, a 62 residue alpha/beta protein, we studied the consequences of both single and multiple mutations in the helix on the kinetics of folding. A triple mutant with 11 additional carbon atoms in core residues in the amino-terminal portion of the helix folded substantially faster than wild type, suggesting that hydrophobic assoc...

Opine dehydrogenases catalyze the reductive condensation of pyruvate with L-amino acids. Biochemical characterization of alanopine dehydrogenase from Arenicola marina revealed that this enzyme is highly specific for L-alanine. Unbiased molecular dynamics simulations with a homology model of alanopine dehydrogenase captured the binding of L-alanine diffusing from solvent to a putative binding re...

Despite the great development in manufacture of helical pile and their use, especially transmission towers wind turbines, there is little research on lateral behavior. In this laboratory study investigate behavior screw piles group (2×1) (1×2) with spacing to diameter helix ratio (S/Dh =1.5, 3, 4.5) having a (10 mm) embedded length (L/D = 40) by using single double soft clay extend stiff under ...

The amino acid glycine strongly destabilizes a-helical structure in proteins as well as in model helical peptides. We have investigated the role of a single glycine substitution in a helical host peptide system. Quantitatively, a single glycine leucine substitution has about one-third of the effect on the stability of helix as does triple substitution of these residues in the middle of the heli...

Many things change during shoot development. Although the most obvious of these is the production of reproductive structures, the morphology and physiology of leaves and vegetative buds changes as well. Some traits change continuously (either increasing or decreasing), while others are expressed in bimodal (present or absent) or even more complex patterns. Some traits vary in the same way in ev...

Materials and Methods ― Fodder and fecal samples were collected from 3 groups of 3 goats, browsing ad lib on fresh leafy Quercus pubescens branches. The 3 groups were made up of: 3 dried-up animals without supplementation; 3 lactating animals, supplemented with a urea-molasses mixture, in a digestibility cage (Meuret, 1988); and 3 lactating animals compelled to eat a pure 0 pubescens die...