This study investigates the logistic model of a single species incorporating additive Allee effect using Caputo fractional order differential equations. The describes positive correlation between individual fitness and population density at low densities. Populations subjected to strong can move towards extinction when their is below critical level. calculates threshold level suffering from effect. Various published studies are showing that models more appropriate for explaining real-world...

A mathematical model consisting of two compartments-shoot and root is used in this paper for the study growth an individual plant. The dynamics plant studied by division these compartments where associated state variables are structural dry weight concentration nutrients. assumption that nutrient taken up from compartment exogenic activities hinder taking nutrients essential plants adversely affect use efficiency (utilization coefficients) resulting into damage. This effect introducing delay...

The object of this research was to assess cardiovascular (CV) risks in Asian Indians California. We conducted eight focus groups and a pilot survey using community-based participatory (CBPR) methods. Focus were held six communities. Surveys by telephone or person areas selected for high population densities Indians. group subjects snowball sampling (n = 57). English two Punjabi groups. used surname-based phone list from three area codes interviews 254). added 50 in-person comparison (total n...

This paper proposes a model that addresses the interaction and dynamics of malaria rotavirus co-infection. The incorporates various epidemiological biological features both rotavirus. mode transmission diseases is different as vector borne disease causing infection through infected arthropod contagious virus diarrhoea by inflammation intestines stomach. It being assumed in humans are susceptible to simultaneously. further recovered population, whether naturally or treatment prone again....

A two compartment mathematical model for the individual plant growth under stress of toxic metal is studied. In it assumed that uptake adsorbed on surface soil by through root thereby decreasing dry weight and shoot due to decrease in nutrient concentration each compartment. order visualize effect growth, we have studied models is, with no effect. From analysis criteria without effects are derived. The numerical simulation done using Matlab support analytical results.

A two compartment mathematical model for the individual plant growth under stress of toxic metal is studied. In it assumed that uptake by through root compartment. The present in soil interfere with and distribution essential nutrients causing decrease nutrient eventually damaging structure. further resistance to transport from shoot increases use efficiency decreases due presence metal. order visualize effect on growth, we have studied models, is, no effect. From analysis models criteria...

A two-compartment mathematical model is proposed for the study of individual plant growth dynamics with time lag due to presence toxic metals in soil. It assumed that nutrient uptake by roots hindered metals. further there less transfer nutrients from root compartment shoot However, concentration decreases as well compartment, resulting a decrease structural dry weight and shoots respectively. This effect was studied considering utilization coefficient use efficiency also affected metals,...

A significant class of water pollutants emerging as a threat to human and aquaticpopulations is Per-and-polyfluoroalkyl substances (PFAS). The primary concern linked PFAS that they exhibit bioaccumulation potential their perfluorocarbon moieties do not break down or so very slowly under natural conditions, which why has often been termed “forever chemicals.” These chemicals are disposed off in aquatic bodies via improper disposal methods, because persistent, accumulate concentrate the...

A significant class of water pollutants emerging as a threat to human and aquatic populations is Per-and-polyfluoroalkyl substances (PFAS). The primary concern linked PFAS that they exhibit bioaccumulation potential their perfluorocarbon moieties do not break down or so very slowly under natural conditions, which why has often been termed “forever chemicals.” These chemicals are disposed off in bodies via improper disposal methods, because persistent, accumulate concentrate the environment....