This work focused on monitoring the reproductive phenology of the chaffinch Fringilla coelebs afr... more This work focused on monitoring the reproductive phenology of the chaffinch Fringilla coelebs africana for two successive seasons (2016 and 2017) in the mountains of the El Kala National Park (North East Algeria). We searched for nests in the tree stratum or by direct observation of breeding pairs carrying building materials from mid-March to the end of June and found a total of 34 nests that were measured without affecting the breeding process. The results show that nests were built at an average height of 6.3m from the ground. The laying period was 46 days (Early April to mid-May) and the average laying date was May 2. The mean of clutch size is 3.2 eggs per brood. All the previous traits are similar to those recorded in Europe. The mean hatching success rate was 43.1% and the average breeding success rate was 36.3%. These two values are relatively low compared to those found in European populations.
South Asian journal of experimental biology, Jan 14, 2019
<jats:p>This study was carried out in order to set up an inventory list of medicinal plants... more <jats:p>This study was carried out in order to set up an inventory list of medicinal plants used in traditional medicine to treat diabetes for which an ethnobotanical test was carried out on 670 diabe c subjects in the Western region of Algeria (Chlef, Mostaganem, Mascara, Oran, Sidi-bel-Abbes, Saida and Tiaret) using a survey. 24 an hyperglycemic medicinal plants were listed of which Berberis vulgaris, Zygophyllum geslini, Erythraea centaurium and Olea eu- ropea represented a broad spectrum of use. Likewise, the an hyperglycemic recipes were prepared mainly in decoc on (45.37%) and infusion (39.62%), and from leaves (42%) and aerial parts (16%). A very valuable data base has been reported for further research, especially for some elds such as phytochemistry and phytopharmacology that aim to identify new natural principles. </jats:p>
In oviparous taxa such as birds, clutch characteristics (e.g. egg size, egg mass and the number o... more In oviparous taxa such as birds, clutch characteristics (e.g. egg size, egg mass and the number of eggs) can be considered as energetic investment in reproduction. In this paper, we study variation in the principal component indices of egg size and shape in Rufous Bush Chats (Cercotrichas galactotes) breeding in date palm plantations in the Al Amri Oasis, north Algeria, in 2008–2009 and 2011–2013. For descriptive and comparative purposes, we also present characteristics of egg length, breadth, volume, shape and mass. The size and shape indices as well as dimensions and masses of the eggs laid by particular females tended to be similar to one another, with most variation occurring between clutches (significant repeatabilities for all egg traits). Variation in the size of eggs was influenced by the year-laying date interaction, while variation in the shape (elongation) of eggs was marginally significantly affected by the year-laying date interaction. Year had a significant factor effe...
يشكل الاستثمار الأجنبي المباشر، أفضل ما هو متاح من مصادر التمويل الخارجية، إذ في الوقت الذي يتعاظ... more يشكل الاستثمار الأجنبي المباشر، أفضل ما هو متاح من مصادر التمويل الخارجية، إذ في الوقت الذي يتعاظم حجمه، أخذت كافة الأشكال لتدفق رؤوس الأموال إلى البلدان النامية في التراجع، ذلك لما يمكن أن يساهم به في زيادة معدلات النمو، ونقل التكنولوجيا، وترقية أداء العنصر البشري، ودعم القدرات التنافسية للبلدان المضيفة. نتناول من خلال هذه الورقة، اتجاهات الاستثمار الأجنبي المباشر عالميا وعربيا، إضافة إلى تحليل مناخ الاستثمار في بعض البلدان المغاربية، من خلال بعض المؤشرات الدولية.
The present study assessed the chemical composition (such fatty acids, triglycerides, tocopherols... more The present study assessed the chemical composition (such fatty acids, triglycerides, tocopherols) of argan oil from plants growing in two regions of Algeria (Tindouf and Mostaganem). The extraction of oil was carried out by solvent using soxhlet apparatus. The oil yield obtained was 55.9 % for Tindouf oil (TO) and 66.5 % for Mostaganem oil (MO). The fatty acid composition was determined by GC-FID, the triglycerides and tocopherols by HPLC. The results showed that the unsaturated fatty acids were 79.88 % and 82.58 % with the predominant components were oleic acid 45.02 % and 50.3 % followed by linoleic acid 29 % and 36.8 %. The major triglycerides were dilinoleoyl-oleoyl-glycerol (LLO) 12 % and 15 %, dioleoyl-llinoleoyl-glycerol (OOL) 15.5 % and 18.8 %, palmitoyl-oleoyl-linoleoyl-glycerol (POL) 12.6 % and 14.3 %, palmitoyl-dioleoyl-glycerol (POO) 15.8 % and 16.8 % then triolein (OOO) 11.3 % and 12.1 %. The unsaponifiable fraction was 1.6 % and 1.71 %. The tocopherols showed a high a...
rich in essential polyunsaturated fatty acids. It is a source of oleic acid (47.7%) and linoleic ... more rich in essential polyunsaturated fatty acids. It is a source of oleic acid (47.7%) and linoleic acid (29.3) [10] and is rich in minor and noble compounds like tocopherols, polyphenols, sterols, carotenoids, xanthophyls, squalene [11], and saponins [12]. Many scientific studies have reported that the oil has many pharmacological effects, such as antioxidant [13], antiproliferative [14], cardioprotective [15], and hypolipemiant [16] activities. The aim of this present work was to determinate the composition of fatty acids and triacylglycerols of oils obtained from seeds of trees growing in two different regions of Algeria (Tindouf and Mostaganem) and to assess its physical and chemical parameters. The results will furthermore be important as an indication of the potential nutrient and economic utility of argan oil of Algeria as a new source of edible lipids. Table 1 presents the physical and chemical characteristics of argan oil of the two regions. The physical characteristics, density, refractive index, and absorbance in UV at 232 and 270 nm for argan oil of the two regions (Mostaganem and Tindouf) are comparable and compatible to the values reported by Moroccan standard (MS: 08.50.90) [10]. These values are consistent with those described in the MS (08.50.90) for which the values of the density for argan oil generally vary between 0.906–0.919 (at 20°) and for refractive index (at 20°) between (1.463–1.472) [10]. The absorbance in ultraviolet provides information on the quality of oils. The absorption at 232 and 270 nm is due to the presence of conjugated diene and triene systems. The degree of oxidation of the oil is reflected in its specific extinction at 232 and 270 nm. In fact, oils of good quality contain very few products of oxidation. Argan oil showed few absorbance at 232 and 270 nm. The chemical parameters of oil are as follow: the free fatty acids (FFA) value is 0.11–0.12%, this rate is much lower than the upper limit value (15%) established by the Moroccan standard (MS: 08.50.90) [10]. It means, we can confirm that our oils are virgin and not be altered. The iodine value (97.02 and 101.45) was due to its high content of unsaturated fatty acids (Table 1). The peroxide value (2.65 and 2.60 meqO 2 /kg oil) was below the limit of 20 meq of oxygen/kg of oil, showing the relative stability to oxidation of these oils. The saponification value (190.79 and 188.55) was lower; all these values agree with MS (08.50.90) [10]. The major fatty acids present in argan oil were oleic, linoleic, palmitic, and stearic acids (Table 2). Oleic and linoleic acid were the main unsaturated fatty acids in argan oil (MS: 08.50.90) [10]; 79.88% of the compounds identified in argan oil are unsaturated fatty acids (UFA), and 20.12% are saturated fatty acids. The oleic acid content reached 50.30% for argan oil from Tindouf and 45.02% for Mostaganem. The oil of Tindouf contains 28.99% linoleic acid, while that of Mostaganem contains 36.80%. These results concurred with those reported by [17].
We studied a colony of the Western Cattle Egret Bubulcus ibis located in the public garden on the... more We studied a colony of the Western Cattle Egret Bubulcus ibis located in the public garden on the northern outskirts of Chlef, north-western of Algeria, a site with 13 tree species; in this locality Cattle Egrets nested only on Ficus elastica, Jacaranda mimosifolia and Pinus halepensis. We observed the birds, each two weeks during the wintering period and weekly during the breeding season (February to August). To count the colony population, we used the method described by Dragonetti & Giovacchini (2009), called perimeter counts. Egg and nestling were recorded on 20 randomly selected nests and from different locations in each ofthe three nesting trees until all fledging. The number of Cattle Egrets at this site varied according to season, and was higher during the breeding season (1902 individuals) than during the wintering period (1210 individuals). Depending on the morphology of the trees hosting this colony, numbers of these birds varied from one tree to another. The nests observ...
This work focused on monitoring the reproductive phenology of the chaffinch Fringilla coelebs afr... more This work focused on monitoring the reproductive phenology of the chaffinch Fringilla coelebs africana for two successive seasons (2016 and 2017) in the mountains of the El Kala National Park (North East Algeria). We searched for nests in the tree stratum or by direct observation of breeding pairs carrying building materials from mid-March to the end of June and found a total of 34 nests that were measured without affecting the breeding process. The results show that nests were built at an average height of 6.3m from the ground. The laying period was 46 days (Early April to mid-May) and the average laying date was May 2. The mean of clutch size is 3.2 eggs per brood. All the previous traits are similar to those recorded in Europe. The mean hatching success rate was 43.1% and the average breeding success rate was 36.3%. These two values are relatively low compared to those found in European populations.
South Asian journal of experimental biology, Jan 14, 2019
<jats:p>This study was carried out in order to set up an inventory list of medicinal plants... more <jats:p>This study was carried out in order to set up an inventory list of medicinal plants used in traditional medicine to treat diabetes for which an ethnobotanical test was carried out on 670 diabe c subjects in the Western region of Algeria (Chlef, Mostaganem, Mascara, Oran, Sidi-bel-Abbes, Saida and Tiaret) using a survey. 24 an hyperglycemic medicinal plants were listed of which Berberis vulgaris, Zygophyllum geslini, Erythraea centaurium and Olea eu- ropea represented a broad spectrum of use. Likewise, the an hyperglycemic recipes were prepared mainly in decoc on (45.37%) and infusion (39.62%), and from leaves (42%) and aerial parts (16%). A very valuable data base has been reported for further research, especially for some elds such as phytochemistry and phytopharmacology that aim to identify new natural principles. </jats:p>
In oviparous taxa such as birds, clutch characteristics (e.g. egg size, egg mass and the number o... more In oviparous taxa such as birds, clutch characteristics (e.g. egg size, egg mass and the number of eggs) can be considered as energetic investment in reproduction. In this paper, we study variation in the principal component indices of egg size and shape in Rufous Bush Chats (Cercotrichas galactotes) breeding in date palm plantations in the Al Amri Oasis, north Algeria, in 2008–2009 and 2011–2013. For descriptive and comparative purposes, we also present characteristics of egg length, breadth, volume, shape and mass. The size and shape indices as well as dimensions and masses of the eggs laid by particular females tended to be similar to one another, with most variation occurring between clutches (significant repeatabilities for all egg traits). Variation in the size of eggs was influenced by the year-laying date interaction, while variation in the shape (elongation) of eggs was marginally significantly affected by the year-laying date interaction. Year had a significant factor effe...
يشكل الاستثمار الأجنبي المباشر، أفضل ما هو متاح من مصادر التمويل الخارجية، إذ في الوقت الذي يتعاظ... more يشكل الاستثمار الأجنبي المباشر، أفضل ما هو متاح من مصادر التمويل الخارجية، إذ في الوقت الذي يتعاظم حجمه، أخذت كافة الأشكال لتدفق رؤوس الأموال إلى البلدان النامية في التراجع، ذلك لما يمكن أن يساهم به في زيادة معدلات النمو، ونقل التكنولوجيا، وترقية أداء العنصر البشري، ودعم القدرات التنافسية للبلدان المضيفة. نتناول من خلال هذه الورقة، اتجاهات الاستثمار الأجنبي المباشر عالميا وعربيا، إضافة إلى تحليل مناخ الاستثمار في بعض البلدان المغاربية، من خلال بعض المؤشرات الدولية.
The present study assessed the chemical composition (such fatty acids, triglycerides, tocopherols... more The present study assessed the chemical composition (such fatty acids, triglycerides, tocopherols) of argan oil from plants growing in two regions of Algeria (Tindouf and Mostaganem). The extraction of oil was carried out by solvent using soxhlet apparatus. The oil yield obtained was 55.9 % for Tindouf oil (TO) and 66.5 % for Mostaganem oil (MO). The fatty acid composition was determined by GC-FID, the triglycerides and tocopherols by HPLC. The results showed that the unsaturated fatty acids were 79.88 % and 82.58 % with the predominant components were oleic acid 45.02 % and 50.3 % followed by linoleic acid 29 % and 36.8 %. The major triglycerides were dilinoleoyl-oleoyl-glycerol (LLO) 12 % and 15 %, dioleoyl-llinoleoyl-glycerol (OOL) 15.5 % and 18.8 %, palmitoyl-oleoyl-linoleoyl-glycerol (POL) 12.6 % and 14.3 %, palmitoyl-dioleoyl-glycerol (POO) 15.8 % and 16.8 % then triolein (OOO) 11.3 % and 12.1 %. The unsaponifiable fraction was 1.6 % and 1.71 %. The tocopherols showed a high a...
rich in essential polyunsaturated fatty acids. It is a source of oleic acid (47.7%) and linoleic ... more rich in essential polyunsaturated fatty acids. It is a source of oleic acid (47.7%) and linoleic acid (29.3) [10] and is rich in minor and noble compounds like tocopherols, polyphenols, sterols, carotenoids, xanthophyls, squalene [11], and saponins [12]. Many scientific studies have reported that the oil has many pharmacological effects, such as antioxidant [13], antiproliferative [14], cardioprotective [15], and hypolipemiant [16] activities. The aim of this present work was to determinate the composition of fatty acids and triacylglycerols of oils obtained from seeds of trees growing in two different regions of Algeria (Tindouf and Mostaganem) and to assess its physical and chemical parameters. The results will furthermore be important as an indication of the potential nutrient and economic utility of argan oil of Algeria as a new source of edible lipids. Table 1 presents the physical and chemical characteristics of argan oil of the two regions. The physical characteristics, density, refractive index, and absorbance in UV at 232 and 270 nm for argan oil of the two regions (Mostaganem and Tindouf) are comparable and compatible to the values reported by Moroccan standard (MS: 08.50.90) [10]. These values are consistent with those described in the MS (08.50.90) for which the values of the density for argan oil generally vary between 0.906–0.919 (at 20°) and for refractive index (at 20°) between (1.463–1.472) [10]. The absorbance in ultraviolet provides information on the quality of oils. The absorption at 232 and 270 nm is due to the presence of conjugated diene and triene systems. The degree of oxidation of the oil is reflected in its specific extinction at 232 and 270 nm. In fact, oils of good quality contain very few products of oxidation. Argan oil showed few absorbance at 232 and 270 nm. The chemical parameters of oil are as follow: the free fatty acids (FFA) value is 0.11–0.12%, this rate is much lower than the upper limit value (15%) established by the Moroccan standard (MS: 08.50.90) [10]. It means, we can confirm that our oils are virgin and not be altered. The iodine value (97.02 and 101.45) was due to its high content of unsaturated fatty acids (Table 1). The peroxide value (2.65 and 2.60 meqO 2 /kg oil) was below the limit of 20 meq of oxygen/kg of oil, showing the relative stability to oxidation of these oils. The saponification value (190.79 and 188.55) was lower; all these values agree with MS (08.50.90) [10]. The major fatty acids present in argan oil were oleic, linoleic, palmitic, and stearic acids (Table 2). Oleic and linoleic acid were the main unsaturated fatty acids in argan oil (MS: 08.50.90) [10]; 79.88% of the compounds identified in argan oil are unsaturated fatty acids (UFA), and 20.12% are saturated fatty acids. The oleic acid content reached 50.30% for argan oil from Tindouf and 45.02% for Mostaganem. The oil of Tindouf contains 28.99% linoleic acid, while that of Mostaganem contains 36.80%. These results concurred with those reported by [17].
We studied a colony of the Western Cattle Egret Bubulcus ibis located in the public garden on the... more We studied a colony of the Western Cattle Egret Bubulcus ibis located in the public garden on the northern outskirts of Chlef, north-western of Algeria, a site with 13 tree species; in this locality Cattle Egrets nested only on Ficus elastica, Jacaranda mimosifolia and Pinus halepensis. We observed the birds, each two weeks during the wintering period and weekly during the breeding season (February to August). To count the colony population, we used the method described by Dragonetti & Giovacchini (2009), called perimeter counts. Egg and nestling were recorded on 20 randomly selected nests and from different locations in each ofthe three nesting trees until all fledging. The number of Cattle Egrets at this site varied according to season, and was higher during the breeding season (1902 individuals) than during the wintering period (1210 individuals). Depending on the morphology of the trees hosting this colony, numbers of these birds varied from one tree to another. The nests observ...
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