Biodiversity of the Blattopteran Fauna in the Chelia Cedar Forest (the Aures - Eastern Algeria)

The cedar forests in Algeria represent a model of forests very rich in entomological fauna and especially dictyopterans, notably blattopterans. In the cedar forest of Chelia in the Aurès Mountains, we chose three different sites according to altitude (2020 m, 1920 m, 1820 m) in order to collect existing cockroaches using the sight-hunting method (twice a month). The inventory allowed us to capture more than 1220 cockroaches and we were able to identify three genus (Dziriblatta, Phyllodromica ,Loboptera) and seven species: Dziriblatta stenoptera, Dziriblatta nigrivintris, Phyllodromica zebra, Pyllodromica trivittata, Phyllodromica sp, Loboptera angulata, Loboptera alluaudi, of which Dziriblatta nigrivintris is the most abundant species with a rate of 52.05 % .The results show that the distribution of these species in the diffrent sites in Chelia cedar is controlled by a several natural factors such as (temperature, altitude …etc)

Inventory and Distribution of Mosquitoes (Diptera, Culicidae) in the Aures Region (Batna, Algeria)

Mosquitoes are the most terrifying both for their abundance and for the diseases they transmit. They are vectors of malaria, lymphatic filariasis and arbovirus such as yellow fever, dengue, viral encephalitis and African horse sickness. These characteristics give this fauna prominent importance and health interest. To identify the most widespread mosquito species, we conducted for the first time an inventory in the Aures region more particularly the wilaya of Batna (East of Algeria) from May 2017 to January 2020, we studied their diversity, abundance and distribution. The sampling is done by monthly surveys of the various localities chosen, using the dipping method to collect the larvae. In the various sites prospected, we were able to collect a total of 8275 mosquito individuals presented by nine species belonging to four different genera: Culiseta, Culex, Aedes and Anopheles of which the genus Culiseta is the best represented, particularly with the species Culiseta longiareolata (52.07%). It appears from what we have obtained that the Batna region reveals a significant diversity of mosquitoes. This study aimed to inventory the Culicidian species more broadly by surveys in several localities of Batna region at the level of different environments. This will allow us to know the faunistic composition of the region, to collect and record information on the vectors, their habitats and the conditions that favors their multiplication within a given area

Free Energy of Adsorption of Methylene Blue on Polyvinyl Chloride Containing Iron Oxide Nanoparticles Coated with Poly[2-(dimethylamino)ethyl methacrylate]

International audienceThe free energy of adsorption is a parameter that describes the affinity between adsorbent and adsorbate; this affinity has a close relationship with the nature of the chemical or physical forces which can be formed, at the adsorbent-adsorbate interface. In the present work a polyvinyl chloride (PVC) based nanocomposite film containing poly[2-(dimethylamino)ethyl methacrylate] (PDMAEMA) coated-iron oxide nanoparticles (IONPs) was prepared; this material was then used for methylene blue (MB) removal from water. The IONPs were synthesized by a co-precipitation method, coated with PDMAEMA using the emulsion approach, and then dispersed in a film of PVC. Ultraviolet-visible (UV-Vis) spectroscopy was used to study the MB adsorption process on the prepared nanocomposite; the obtained results showed that the adsorption process of MB onto the PVC-based nanocomposite film was linear as a function of initial MB concentrations in the range from 10(-7) to 10(-4 )mol/L; the free energy of adsorption was calculated using the Langmuir isotherm and found to be -46.82 kJ/mol with a high adsorption equilibrium constant of 2.93 x 10(6) L/mol, indicating that the mechanism of the MB adsorption process was chemisorption. The synthesized PDMAEMA, coated IONPs, and uncoated IONPs were thoroughly characterized by Fourier Transform Infrared Spectroscopy (FTIR), Nuclear Magnetic Resonance Spectroscopy (H-1 NMR), and Scanning Electron Microscopy (SEM)

Preparation of gold nanoparticles and determination of their particles size via different methods

International audienc

Biphasic (Janus), Core–Shell and Functionalized Magnetic Polymer Particles: A Route of Synthesis to Application

International audienc

Abstracts of 1st International Conference on Computational & Applied Physics

This book contains the abstracts of the papers presented at the International Conference on Computational & Applied Physics (ICCAP’2021) Organized by the Surfaces, Interfaces and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria, held on 26–28 September 2021. The Conference had a variety of Plenary Lectures, Oral sessions, and E-Poster Presentations. Conference Title: 1st International Conference on Computational & Applied PhysicsConference Acronym: ICCAP’2021Conference Date: 26–28 September 2021Conference Location: Online (Virtual Conference)Conference Organizer: Surfaces, Interfaces, and Thin Films Laboratory (LASICOM), Department of Physics, Faculty of Science, University Saad Dahleb Blida 1, Algeria