The Bifurcation Analysis of Food Web Prey- Predator Model with Toxin

Azhar Abbas Majeed; Mohamed Akram Lafta

doi:10.1088/1742-6596/1897/1/012080

Details

Publication Date

Sat May 01 2021

Journal Name

Journal Of Physics: Conference Series

Volume

1897

DOI

10.1088/1742-6596/1897/1/012080

Choose Citation Style

Statistics

View publication

22

View original publication

5

Statistics

The Bifurcation Analysis of Food Web Prey- Predator Model with Toxin

Azhar Abbas Majeed

Mohamed Akram Lafta

...Show More Authors

AbstractLocal and global bifurcations of food web model consists of immature and mature preys, first predator, and second predator with the current of toxicity and harvesting was studied. It is shown that a trans-critical bifurcation occurs at the equilibrium point <italic>E</italic> 0, and it revealed the existence of saddle-node bifurcation occurred at equilibrium points <italic>E</italic> 1, <italic>E</italic> 2 and <italic>E</italic> 3. At any point, the occurrence of bifurcation of the pitch fork does not occur. However, Hopf bifurcation is carried out around positive equilibrium point only.

View Publication

Publication Date

Fri Dec 01 2023

Journal Name

Chemical Methodologies

Investigations on TiO<inf>2</inf>-NiO@In<inf>2</inf>O<inf>3</inf> Nanocomposite Thin Films (NCTFs) for Gas Sensing: Synthesis, Physical Characterization, and Detection of NO<inf>2</inf> and H<inf>2</inf>S Gas Sensors

M.A.

Fuad Tariq

S.

...Show More Authors

(16)

Publication Date

Tue Dec 09 2025

Journal Name

Journal Of Computer-aided Molecular Design

Synthesis, characterization and density functional theory of a novel dichloro(2-(1-anthracene-9-ylmethyl)-1H-1,2,3-triazole-5-yl) pyridine)Cu(II) and polymeric dichloro(2-(1-anthracene-9-ylmethyl)-1H-1,2,3 -triazole-5-yl)pyridine) Cd(II) complexes

K. M.

Ahmed A.

S. J.

C.

J. H.

G. J.

Rasha Ahmed

Aly

Musa E. Mohamed

O. A.

Ali Y.

Ahmed A.

Sameera N.

Antar A.

...Show More Authors

View Publication

(1)

Publication Date

Thu Jan 01 2026

Journal Name

Chalcogenide Letters

Structural and Optical Properties of Cu2ZnSn(S1−xSex)4 Nanostructures Thin Film for Photovoltaic Applications

Cu2 ZnSn(S1−x Se x)4 thin film

energy gap

dielectric constant

extinction coefficient

refractive index

Bushra A.

Ameer J.

Ahmad A.

Yasser A.

...Show More Authors

Copper zinc tin sulfide selenide, Cu2 ZnSn(S1−x Se x)4 , absorbers are promising earth-abundant and environmentally benign materials for low-cost photovoltaic applications. This study investigates the structural and optical properties of Cu 2 ZnSn(S1−x Se x)4 nanostructured thin films prepared by pulsed laser deposition using melt-quenched targets with selenium compositions x = 0.0–1.0. X-ray diffraction revealed that films with low selenium content remained amorphous, whereas higher selenium incorporation promoted the formation of polycrystalline kesterite–stannite phases with preferred orientations along (112), (200), (220), and (312). The crystallite size increased from 12.3 to 17.9 nm as selenium reached x = 1.0, indicating enha

View Publication

(1)

1 2 3 4 ... 2828 2829 2830 2831