Diatom Microflora of Ouled Djilali Section (Messinian Diatomites from Lower Chelif Basin, North-Western Algeria)

2022 ◽  
pp. 239-242
Author(s):  
Amal Touina ◽  
Bouhameur Mansour ◽  
Safia Chernai ◽  
Boualem Hamdi
Keyword(s):  
Western Algeria ◽  
North Western

Chemical composition, antibacterial and antioxidant activities of Juniperus oxycedrus essential oils from North Western Algeria

2018 ◽  
Vol 7 (2) ◽  
pp. 74-83
Author(s):  
Cherifa Zahaf ◽  
Djilali Achour ◽  
Meriem Mokhtar ◽  
Moussa Brada
Keyword(s):  
Essential Oils ◽  
Steam Distillation ◽  
Antioxidant Activities ◽  
Inhibition Zone ◽  
Inhibitory Effect ◽  
Juniperus Oxycedrus ◽  
Germacrene D ◽  
Western Algeria ◽  
North Western ◽  
Β Carotene

The aim of the current study was to identify the essential oils of Juniperus oxycedrus from North Western Algeria (Mostaganem) by gas chromatography coupled to mass spectrometer (GC-MS), and to evaluate their antibac-terial and antioxidant activities. Extraction was carried out by two processes, hydrodistillation (HD) and steam distillation (SD). Analysis by GC-MS led to the identification of 38 components using both methods. HD was found to be the best process for the extraction of Juniperus essential oil, and the ma-jor identified compounds were: germacrene-D (38.28%), followed by α.-pinene (17.66%), and δ-cadinene (5.91%). In the antibacterial test, SD oil had a higher inhibitory effect. The strain Staphylococcus aureus was the most sensitive with an inhibition zone of 15.25 mm and a minimum inhibitory concentration (MIC) of 0.25 mg/mL. The antioxidant activity of J. oxycedrus es-sential oils obtained by HD was more important than SD (IC50= 19.52 mg/mL and IC50= 38.62 mg/mL) with DPPH and β-carotene bleaching tests respec-tively. Essential oils of J. oxycedrus could therefore represent good candidates to be used as antioxidant and antibacterial agents.

scholarly journals Ammonoids from the Dalle des Iridet of the Mouydir and Ahnet (Central Sahara) and the Formation d'Hassi Sguilma of the Saoura Valley (Late Tournaisian–Early Viséan; Algeria)

Fossil Record ◽  
2010 ◽  
Vol 13 (1) ◽  
pp. 203-214 ◽  
Author(s):  
D. Korn ◽  
V. Ebbighausen ◽  
J. Bockwinkel
Keyword(s):  
New Species ◽  
Early Carboniferous ◽  
North African ◽  
The North ◽  
Two New Species ◽  
Western Algeria ◽  
Central Sahara ◽  
North Western

Four ammonoid species are described from the Early Carboniferous (Mississippian) Iridet Formation of the Ahnet and Mouydir (Central Sahara, Algeria); three of which are new: <i>Eurites temertassetensis</i> n. sp., <i>Trimorphoceras teguentourense</i> n. sp., and <i>Trimorphoceras azzelmattiense</i> n. sp. The species can be attributed to the North African <i>Ammonellipsites-Merocanites</i> Assemblage (<i>Fascipericyclus-Ammonellipsites</i> Genus Zone; Late Tournaisian to Early Viséan). Additionally, the two new species <i>Ammonellipsites sguilmensis</i> n. sp. and <i>Muensteroceras beniabbesense</i> n. sp. are described from the time equivalent Hassi Sguilma Formation of the Saoura Valley (north-western Algeria). <br><br> doi:<a href="http://dx.doi.org/10.1002/mmng.200900012" target="_blank">10.1002/mmng.200900012</a>

scholarly journals Chemical Variability of the Essential Oil Isolated from Aerial Parts of Tetraclinis Articulata from North-Western Algeria

2015 ◽  
Vol 10 (8) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Maghnia Boussaïd ◽  
Chahrazed Bekhechi ◽  
Fawzia Beddou ◽  
Daoudi Chabane Sari ◽  
Ange Bighelli ◽  
...  
Keyword(s):  
Essential Oil ◽  
Bornyl Acetate ◽  
Pca Analysis ◽  
Aerial Parts ◽  
Group I ◽  
Tetraclinis Articulata ◽  
Chemical Variability ◽  
Germacrene D ◽  
Western Algeria ◽  
North Western

The objective was to investigate the yield and chemical composition of 50 essential oil samples isolated from leaves and flowers of Tetraclinis articulata harvested in eight locations (coastal township and highlands) of Tlemcen Province (North-Western Algeria). Essential oil yields varied drastically from sample to sample (0.03 to 0.86%, w/w). No direct correlation was observed between the yield and the altitude of the harvest areas. The oils consisted mainly of monoterpenes: α-pinene (9.2–56.5%), bornyl acetate (1.2–45.1%), camphor (0.5–40.3%), borneol (0.2–12.9%), limonene (3.6–12.5%), and myrcene (1.6–9.7%). Sesquiterpenes were represented by germacrene D (up to 14.2%) and (E)-β-caryophyllene (up to 13.3%). PCA analysis of the data allowed the distinction of two groups within the samples. The composition of group I (9 samples) was dominated by camphor, (Mean = 30.9%) followed by α-pinene (M = 19.1%) and bornyl acetate (M = 11.4%). Group II was divided into two sub-groups. Samples of sub-group IIA (8 samples) contained mainly α-pinene (M = 45.4%). Samples of the largest group IIB (33 samples) were characterized by similar contents of α-pinene (M = 28.2%) and bornyl acetate (M = 24.5%) and the occurrence of camphor to a lesser extent (M = 10.0%).

Investigating the Blusa: The Cultural and Sartorial Biography of an Algerian Dress

Costume ◽  
2014 ◽  
Vol 48 (1) ◽  
pp. 60-81
Author(s):  
Leyla Belkaïd
Keyword(s):  
Urban Women ◽  
Colonial Period ◽  
Full Length ◽  
Cultural Assimilation ◽  
Object Based ◽  
Western Algeria ◽  
French Colonial ◽  
Different Cultures ◽  
The Relationship ◽  
North Western

This essay describes the evolution of the garment known as a blusa, worn by urban women in north-western Algeria. The blusa, a full-length dress with short sleeves, was conceived and developed in the cities of Tlemcen and Oran. It incorporates locally meaningful traditions as well as fashion styles in conjunction with different cultures. Its transformation illustrates how Algerian women resisted cultural assimilation through dress while creatively appropriating western European textiles, techniques and aesthetics in their clothing, during the French colonial period (1830–1962) and its aftermath. The exploration of the contemporary blusa variations reveals how the relationship between clothing and identity is still highly complex in Algerian cities. To date, the invention, the rituals, the design, and the production of the blusa dress has been little studied. This paper reconstitutes an historical puzzle based on recent object-based research and anthropological investigations. It seeks to interpret the blusa as an interface between tradition and modernity.

Composition, chemical variability and effect of distillation time on leaf and fruits essential oils ofMyrtus communisfrom north western Algeria

2015 ◽  
Vol 28 (2) ◽  
pp. 146-156 ◽  
Author(s):  
Aicha Hennia ◽  
M. Graça Miguel ◽  
Moussa Brada ◽  
S. Nemmiche ◽  
A. Cristina Figueiredo
Keyword(s):  
Essential Oils ◽  
Chemical Variability ◽  
Western Algeria ◽  
North Western

scholarly journals Inherited thrombophilia and recurrent pregnancy loss: a single-center case-control study in North-Western Algeria

2020 ◽  
Vol 21 (1) ◽  
Author(s):  
Ilhem Nassour-Mokhtari ◽  
Bouchra Loukidi ◽  
Abdellatif Moussouni ◽  
Reda Bettioui ◽  
Riad Benhabib ◽  
...  
Keyword(s):  
Pregnancy Loss ◽  
Recurrent Pregnancy Loss ◽  
Case Control Study ◽  
Case Control ◽  
Single Center ◽  
Inherited Thrombophilia ◽  
Western Algeria ◽  
North Western ◽  
Control Study

scholarly journals Diet composition of the Pharaoh Eagle Owl, Bubo ascalaphus (Strigiformes, Strigidae) in a Steppe region of Algeria

2021 ◽  
Vol 29 (2) ◽  
pp. 177-182
Author(s):  
Naceur Benamor ◽  
Toufik Guetouache ◽  
Farid Bounaceur
Keyword(s):  
Diet Composition ◽  
Bird Species ◽  
Total Biomass ◽  
Food Items ◽  
Important Prey ◽  
Steppe Region ◽  
Eagle Owl ◽  
Western Algeria ◽  
North Western ◽  
Prey Items

Abstract The diet composition of Pharaoh Eagle Owl (Bubo ascalaphus) was investigated in a semiarid area of North-western Algeria. A total of 65 pellets regurgitated by the B. ascalaphus were analysed, 288 food items were composed primarily of mammal remains (4 rodents, 1 bat and insectivore, 93.7%), and 1 bird species (passerine, 6.3%). The most frequent prey among the mammals were rodents (83.3%), which included Mus musculus (59.7%), Meriones shawi (11.1%), Meriones libycus (11.1%) and Jaculus jaculus (1.4%). The rodents were the most important prey items in biomass (91.4%), M. shawi made up to 41.9% of the total biomass. We may conclude that the Pharaoh Eagle Owl relies, in its feeding, very broadly on small mammals, completed by other groups.

Sign in / Sign up

Export Citation Format

Share Document