This paper is devoted to local athletic-shirts bifurcations of three-dimensional (3D) quadratic jerk system.First, we start by analysing the saddle-node bifurcation.Then we introduce the concept of canonical system.Next, we study the transcritial bifurcation of canonical system.Finally we study the zero-Hopf bifurcations of canonical system, which
Biomonitoring for heavy metals is important to assess health risks, especially in Arctic communities where rural residents rely on locally harvested foods.However, laboratory testing for blood contaminants is expensive and might not be sustainable for long-term monitoring.We assessed whether pooled specimen biomonitoring could be a part of a plan f
The increasing pace of globalization and competition for highly skilled professionals have accelerated the international mobility across national boundaries for knowledge exchange and economic reasons.The purpose of this Heart / Cardiovascular Support study was to examine the current trend and determinants of migration intentions in China.For this
The incorporation of new water sources into a supply system requires an assessment of their economic feasibility, which, Mounts in turn, demands knowledge of their associated costs.This study calculates water production cost and evaluates social cost by applying the residual value method and calculating the shadow price for several water sources.Th
The relevance of the work is due to the need to study the assessment of the toxicity of antimicrobial drugs for environmental objects.The simplest and most obvious methods of assessing the impact of antibiotics on the environment are High Chairs bioindication methods, in particular, the assessment of phytotoxicity of drugs.The study presents the re