The alkaline-earth metal cyanamides MgCN* SrCN* and BaCN 2 were prepared by the reaction of melamine with the metal nitrides (M&N2, Sr-jN, Ba 3 N 2 ) at temperatures between 740 e C and 850 °C. MgCN 2 was structurally characterized by X-ray analysis using powder methods (R3m, Ζ 3 , a=327.34(1) pm, c-1412.82(5) pm). The crystal structures of S r C N 2 and BaCN 2 were determined from X-ray single...

Carnosinases are Xaa-His dipeptidases that play diverse functions throughout all kingdoms of life. Human isoforms of carnosinase (CN1 and CN2) under appropriate conditions catalyze the hydrolysis of the dipeptides carnosine (β-alanyl-L-histidine) and homocarnosine (γ-aminobutyryl-L-histidine). Alterations of serum carnosinase (CN1) activity has been associated with several pathological conditio...

We consider a shortest path problem for a directed graph with edges labeled with a cost and a capacity. The problem is to push an unsplittable flow f from a specified source to all other vertices with the minimum cost for all f values. Let G = (V,E) with |V | = n and |E| = m. If there are t different capacity values, we can solve the single source shortest path problem t times for all f in O(tm...

a graph g = (v,e) with p vertices and q edges is said to be a total mean cordial graph if there exists a function f : v (g) → {0, 1, 2} such that f(xy) = [(f(x)+f(y))/2] where x, y ∈ v (g), xy ∈ e(g), and the total number of 0, 1 and 2 are balanced. that is |evf (i) − evf (j)| ≤ 1, i, j ∈ {0, 1, 2} where evf (x) denotes the total number of vertices and edges labeled with x (x = 0, 1, 2). in thi...

Computer network attacks are among the most significant and common threats against computer-wired wireless communications. Intrusion detection technology is used to secure computer networks by monitoring traffic identifying attacks. In this paper, we investigate evaluate application of four machine learning classification algorithms for that target networks: DDoS, Brute Force Web, SQL Injection...

The hydrological models are important tools to evaluate the behavior of watersheds, helping in decision making. Thus, this study had objective evaluating performance Soil and Water Assessment Tool (SWAT) model flow simulation Ribeirão Taquaruçu Hydrographic Basin. Flow data from two fluviometric stations were used April 2013 August 2015. results sensitivity analysis indicated that most influent...