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<channel xml:lang="fr">
	<title>WEBREVIEW</title>
	<link>http://www.webreview.dz/</link>
	<description>Webreview est un site f&#233;d&#233;rateur des revues scientifiques. Il met &#224; la disposition des utilisateurs un ensemble de revues scientifiques alg&#233;riennes couvrant tous les domaines. Webreview est ouvert &#224; toute revue d&#233;sireuse de publier son contenu en ligne soit en mode d'acc&#232;s complet ou restreint permettant ainsi la valorisation de la recherche scientifique en Alg&#233;rie. Webreview et un projet d&#233;velopp&#233; par le CERIST au sein de la Division Recherche et D&#233;veloppement en Sciences de l'Information. Pour contacter Webreview par &#233;mail : webreview@mail.cerist.dz Pour contacter Webreview par courrier, fax ou t&#233;l&#233;phone : Centre de Recherche sur l'Information Scientifique et Technique (CERIST) Rue des 03 fr&#232;res AISSOU, Ben-Aknoun, Alger, Alg&#233;rie T&#233;l/Fax : +(213)(0) 21.91.21.98</description>
	<language>fr</language>
	<generator>SPIP - www.spip.net</generator>




<item xml:lang="fr">
		<title>Antioxidant activity of Imino-Hesperidin derivatives</title>
		<link>http://www.webreview.dz/spip.php?article2549</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2549</guid>
		<dc:date>2015-07-07T09:34:41Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Belboukhari N., Cheikh N., Cheriti A., Fandougouma O.</dc:creator>


		<dc:subject>Hesperidin</dc:subject>
		<dc:subject>Citrus sp.</dc:subject>
		<dc:subject>antioxidant</dc:subject>
		<dc:subject>&#946; -carotene</dc:subject>

		<description>
&lt;p&gt;DMF solution of imino-Hesperidin derivatives was screened for its antioxidant activity based on their capacity to scavenge the free &#946;-carotene radical after exposure to a UV lamp at 254 nm. In the first time, we have synthesized seven new compounds derived from Hesperidin 1 based on condensation reactions and nucleophile additions simple and easy to carry. Hesperidin 1 which is a natural molecule extracted in the laboratory (LPOS) from orange peel (genre Citrus sp.), which is the best known (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot9498" rel="tag"&gt;Hesperidin&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9499" rel="tag"&gt;Citrus sp.&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9500" rel="tag"&gt;antioxidant&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9501" rel="tag"&gt;&#946; -carotene&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;DMF solution of imino-Hesperidin derivatives was screened for its antioxidant activity based on their capacity to scavenge the free &#946;-carotene radical after exposure to a UV lamp at 254 nm. In the first time, we have synthesized seven new compounds derived from Hesperidin 1 based on condensation reactions and nucleophile additions simple and easy to carry. Hesperidin 1 which is a natural molecule extracted in the laboratory (LPOS) from orange peel (genre Citrus sp.), which is the best known flavanone of citrus and the most studied. The structural elucidation of these new products (mono-iminohesperidin 3-4 and bis-iminohesperidin 5-9 derivatives) was achieved by IR, UV, 1H NMR and 13C NMR. The results of antioxidant activity proved that these compounds showed antioxidant activity by means of &#946;-carotene greater than that of Hesperidin 1.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>In vitro effect of Hesperidin &amp; Hesperitin on calcium oxalate Crystallization : The Chiral Impact</title>
		<link>http://www.webreview.dz/spip.php?article2550</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2550</guid>
		<dc:date>2015-07-07T09:34:23Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Belboukhari N., Cheriti A., Lahmer N. , Naas A. , Sekkoum K.</dc:creator>


		<dc:subject>Hesperidin</dc:subject>
		<dc:subject>Hesperitin</dc:subject>
		<dc:subject>flavanone glycoside</dc:subject>
		<dc:subject>orange peels</dc:subject>
		<dc:subject>calcium oxalate</dc:subject>
		<dc:subject>antilithiasic activity </dc:subject>

		<description>
&lt;p&gt;Hesperidin, an abundant bioflavonoid in citrus fruits, has been reported to possess a wide range of pharmacological properties. In this study, the antilithiasic activity of hesperidin a glycoside flavanone extracted from leaves peel of three different citrus species, (C. reticulata, C. clementina, C. sinensis), this activity may be explained by interaction of two enantiomers or diastereomers of hesperidin and (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot9498" rel="tag"&gt;Hesperidin&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9502" rel="tag"&gt;Hesperitin&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9503" rel="tag"&gt;flavanone glycoside&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9504" rel="tag"&gt;orange peels&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9505" rel="tag"&gt;calcium oxalate&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9506" rel="tag"&gt;antilithiasic activity &lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;Hesperidin, an abundant bioflavonoid in citrus fruits, has been reported to possess a wide range of pharmacological properties. In this study, the antilithiasic activity of hesperidin a glycoside flavanone extracted from leaves peel of three different citrus species, (C. reticulata, C. clementina, C. sinensis), this activity may be explained by interaction of two enantiomers or diastereomers of hesperidin and hesperitin.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Etude de l'effet des huiles e ssentielles brutes foliaires de Colocynthis vulgaris (L.) Schrad (Cucurbitaceae) sur l' activit&#233; cholinest&#233;rasique chez les imagos de Schistocerca gregaria (Forsk&#229;l, 1775)</title>
		<link>http://www.webreview.dz/spip.php?article2538</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2538</guid>
		<dc:date>2015-07-07T09:19:07Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Boual Z., Boudraissa I., Daddi Bouhoun M., Hamid Oudjana A., Kemassi A., Mokadem S., Ould El Hadj M., Rouibah M.</dc:creator>


		<dc:subject>Toxicit&#233;</dc:subject>
		<dc:subject>S. gregaria</dc:subject>
		<dc:subject>Huile essentielle</dc:subject>
		<dc:subject>Cholinest&#233;rase</dc:subject>
		<dc:subject>C. Vulgaris</dc:subject>

		<description>
&lt;p&gt;Le pr&#233;sent travail porte sur l'&#233;tude de l'effet de la toxicit&#233; sur l'activit&#233; cholinest&#233;rasique et quelques param&#232;tres physiologiques chez des individus m&#226;les et femelles de Schistocerca gregaria &#233;lev&#233; en laboratoire et expos&#233; aux huiles essentielles brutes des feuilles de Colocynthis vulgaris. Les manifestations d'intol&#233;rance g&#233;n&#233;rale &#224; cet extrait apparaissent vers 30 &#224; 60 minutes apr&#232;s l'exposition, l'activit&#233; cholin&#233;sterasique montre une diminution par rapport aux individus t&#233;moins, elle est de 8,08&#177;2,65 (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot4910" rel="tag"&gt;Toxicit&#233;&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot4970" rel="tag"&gt;S. gregaria&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot6629" rel="tag"&gt;Huile essentielle&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9475" rel="tag"&gt;Cholinest&#233;rase&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9476" rel="tag"&gt;C. Vulgaris&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;Le pr&#233;sent travail porte sur l'&#233;tude de l'effet de la toxicit&#233; sur l'activit&#233; cholinest&#233;rasique et quelques param&#232;tres physiologiques chez des individus m&#226;les et femelles de Schistocerca gregaria &#233;lev&#233; en laboratoire et expos&#233; aux huiles essentielles brutes des feuilles de Colocynthis vulgaris. Les manifestations d'intol&#233;rance g&#233;n&#233;rale &#224; cet extrait apparaissent vers 30 &#224; 60 minutes apr&#232;s l'exposition, l'activit&#233; cholin&#233;sterasique montre une diminution par rapport aux individus t&#233;moins, elle est de 8,08&#177;2,65 nanomole/mn/ml chez les m&#226;les, et de 16,34&#177;1,15 nanomole/mn/ml chez les femelles de Schistocerca gregaria trait&#233;s par l'extrait d'huiles essentielles de C. vulgaris. Pour les lots des individus trait&#233;s, le taux de prot&#233;ines laisse appara&#238;tre une diff&#233;rence entre les femelles et les m&#226;les. Il augmente chez les individus m&#226;les pour atteindre 46,11&#177;16,17 &#956;g/ml alors qu'il est 35&#177;13,22 &#956;g/ml chez les individus femelles. Toutefois, l'activit&#233; sp&#233;cifique chez les individus trait&#233;s diminue chez les m&#226;les (0,19&#177;0,04 nanomole /min /mg), mais pour les femelles trait&#233;es semble stable avec 0,49&#177;0,26 nanomole /min /mg. De m&#234;me, les individus de Schistocerca gregaria expos&#233;s &#224; l'extrait d'huiles essentielles brutes foliaires, laissent appara&#238;tre des perturbations au niveau des r&#233;ponses neurochimiques et comportementales, d'o&#249; une toxicit&#233; accrue de cet extrait de C. vulgaris.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Age-related macular degeneration (AMD) is a...</title>
		<link>http://www.webreview.dz/spip.php?article2534</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2534</guid>
		<dc:date>2015-07-06T12:50:22Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator> Ayesha F., Sara F., Sobia N.</dc:creator>


		<dc:subject>Ranibizumab</dc:subject>
		<dc:subject>age-related macular degeneration</dc:subject>
		<dc:subject> smoking</dc:subject>
		<dc:subject>vascular endothelial growth factor</dc:subject>
		<dc:subject>bevacizumab</dc:subject>
		<dc:subject>pegaptanib</dc:subject>

		<description>
&lt;p&gt;Age-related macular degeneration (AMD) is a condition characterized, in the early stages, by slow development and progression, absence of symptoms over a number of years, and extensive retinal deposits called drusen, often associated with pigmentary abnormalities (early AMD).There is strong and consistent evidence that increasing age, family history, obesity/high body mass index, and cataract surgery are associated with late AMD. &lt;br class='autobr' /&gt; Smoking is the strongest and most consistently found (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot8190" rel="tag"&gt;Ranibizumab&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9453" rel="tag"&gt;age-related macular degeneration&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9454" rel="tag"&gt; smoking&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9455" rel="tag"&gt;vascular endothelial growth factor&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9456" rel="tag"&gt;bevacizumab&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9457" rel="tag"&gt;pegaptanib&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;Age-related macular degeneration (AMD) is a condition characterized, in the early stages, by slow development and progression, absence of symptoms over a number of years, and extensive retinal deposits called drusen, often associated with pigmentary abnormalities (early AMD).There is strong and consistent evidence that increasing age, family history, obesity/high body mass index, and cataract surgery are associated with late AMD. &lt;br class='autobr' /&gt;
Smoking is the strongest and most consistently found modifiable risk factor for late AMD.Age-related macular degeneration remains one of the most severe and profound disabilities encountered in medicine, particularly due to the loss of the central vision and the high economic burden it places on patients and societies.Recent advances in &lt;br class='autobr' /&gt;
management of AMD is anti-angiogenic drugs. The identification of the crucial role played by vascular endothelial growth factor (VEGF) in the pathogenesis of wet AMD hasallowed the development of VEGF-blocking agents such as bevacizumab, pegaptanib and ranibizumab.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Acacia Arabica plant is well known in the...</title>
		<link>http://www.webreview.dz/spip.php?article2535</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2535</guid>
		<dc:date>2015-07-06T12:50:20Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Ghiaba Z., Moulay Y., Saidi M.</dc:creator>


		<dc:subject>DPPH</dc:subject>
		<dc:subject>antioxidant activity</dc:subject>
		<dc:subject>Acacia arabica</dc:subject>
		<dc:subject>total phenolic</dc:subject>
		<dc:subject>hosphomolybdenum assay</dc:subject>
		<dc:subject>RPA</dc:subject>

		<description>
&lt;p&gt;Acacia Arabica plant is well known in the region of North African Sahara for its efficiency in the traditional treatment of several diseases such as diarrhoea, eczema, tonsillitis and conjunctivitis. This work was aimed to determine the total phenolic content and antioxid ant activity of methanol:water (8:2) and acetone:water (7:3) extracts of barks of Acacia Arabica growing in Tamanrasset (Algeria). Total phenolic contents of the extracts were determined by the Folin-Ciocalteu method and (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot8015" rel="tag"&gt;DPPH&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8567" rel="tag"&gt;antioxidant activity&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9458" rel="tag"&gt;Acacia arabica&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9459" rel="tag"&gt;total phenolic&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9460" rel="tag"&gt;hosphomolybdenum assay&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9461" rel="tag"&gt;RPA&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;Acacia Arabica plant is well known in the region of North African Sahara for its efficiency in the traditional treatment of several diseases such as diarrhoea, eczema, tonsillitis and conjunctivitis. This work was aimed to determine the total phenolic content and antioxid ant activity of methanol:water (8:2) and acetone:water (7:3) extracts of barks of Acacia Arabica growing in Tamanrasset (Algeria). Total phenolic contents of the extracts were determined by the Folin-Ciocalteu method and their antioxidant activities were evaluated using Phosphomolybdenum, reducing power and DPPH (1,1-diphenyl-2-picrylhydrazine) methods. The highest phenolic content was obtained from acetone:water extract. For the evaluation of an tioxidant activity and for Phosphomolybdenum and Reducing power methods, it was found that the methanol:water extract is more effective than acetone:water extract who has showen more effectiveness by the DPPH method. These results suggest that Acacia Arabica may act as a chemopre ventive agent, providing antioxidant properties.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>A new analytical method was developed for the...</title>
		<link>http://www.webreview.dz/spip.php?article2536</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2536</guid>
		<dc:date>2015-07-06T12:50:17Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator> Daghbouche Y., Bouzidi N. , El hattab M. , Seridi H.</dc:creator>


		<dc:subject>Sterol Determination</dc:subject>
		<dc:subject>Cholesterol</dc:subject>
		<dc:subject>Fucosterol</dc:subject>
		<dc:subject>Asparagopsis Armata</dc:subject>
		<dc:subject>Cystoseira Sedoides</dc:subject>
		<dc:subject>Fourier Transform Infrared</dc:subject>
		<dc:subject>Solid Phase Extraction</dc:subject>

		<description>
&lt;p&gt;A new analytical method was developed for the determination of free sterols in the extracts of the red alga Asparagopsis armata and the brown one Cystoseira sedoides by using FTIR spectrometry. Sterols samples were globally refered to cholesterol content because it is the major sterol contained in red algae [1] and to fucosterol because it is the principal one contained in brown ones [2]. The method involves the use of cholesterol as reference standard in the case of red alga and a (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot9462" rel="tag"&gt;Sterol Determination&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9463" rel="tag"&gt;Cholesterol&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9464" rel="tag"&gt;Fucosterol&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9465" rel="tag"&gt;Asparagopsis Armata&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9466" rel="tag"&gt;Cystoseira Sedoides&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9467" rel="tag"&gt;Fourier Transform Infrared&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9468" rel="tag"&gt;Solid Phase Extraction&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;A new analytical method was developed for the determination of free sterols in the extracts of the red alga Asparagopsis armata and the brown one Cystoseira sedoides by using FTIR spectrometry. Sterols samples were globally refered to cholesterol content because it is the major sterol contained in red algae [1] and to fucosterol because it is the principal one contained in brown ones [2]. The method involves the use of cholesterol as reference standard in the case of red alga and a correction factor of 1.259 &#177;0.003, which represents the ratio between the slopes of calibration lines obtained from fucosterol and cholesterol in the case of brown alga. To isolate the sterols, the lipidic extract of the algae were heated in methanol and diluted with water and then preconcentrated on DSC-18 solid phase cartridges and eluted with 1 mL dichloromethane stabilized with &#946;-amylene. The determination of free sterols by Fourier transform infrared spectrometry was carried out by considering the specific band of cholesterol at 1047 cm-1 corrected with a baseline established between 1060 and 1014 cm-1. The sterols content were obtained by the external calibration. The concentrations obtained were 1.9 &#177; 0.5 % and 1.5 &#177; 0.4 % in Asparagopsis armata and Cystoseira sedoides, respectively.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Fusarium oxysporum f. sp. albedinis (Foa) is...</title>
		<link>http://www.webreview.dz/spip.php?article2537</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2537</guid>
		<dc:date>2015-07-06T12:50:06Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Boulenouar N., Cheriti A., Marouf A.</dc:creator>


		<dc:subject>Date palm</dc:subject>
		<dc:subject>Fusarium oxysporum f. sp. albedinis</dc:subject>
		<dc:subject>antifungal</dc:subject>
		<dc:subject>Medicinal plant</dc:subject>
		<dc:subject>Poisonous plant</dc:subject>
		<dc:subject>direct bioautography</dc:subject>

		<description>
&lt;p&gt;Fusarium oxysporum f. sp. albedinis (Foa) is the causal agent of a lethal disease of date palm &#8220;Phoenix dactylifera L.&#8221; called Bayoud. The antifungal test against Foa was evaluated using direct bioautography for extracts from four medicinal and/or poisonous plants (Acacia raddiana, Asteriscus graveolens (Forsk.), Citrullus colocynhis (L.) Schrad, Pergularia to mentosa). The choice of extracts was based on activity against Foa using disc diffusion techniques and relative virulence. The most (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique377" rel="directory"&gt;Num&#233;ro1&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot9469" rel="tag"&gt;Date palm&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9470" rel="tag"&gt;Fusarium oxysporum f. sp. albedinis&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9471" rel="tag"&gt;antifungal&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9472" rel="tag"&gt;Medicinal plant&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9473" rel="tag"&gt;Poisonous plant&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9474" rel="tag"&gt;direct bioautography&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_texte'&gt;&lt;p&gt;Fusarium oxysporum f. sp. albedinis (Foa) is the causal agent of a lethal disease of date palm &#8220;Phoenix dactylifera L.&#8221; called Bayoud. The antifungal test against Foa was evaluated using direct bioautography for extracts from four medicinal and/or poisonous plants (Acacia raddiana, Asteriscus graveolens (Forsk.), Citrullus colocynhis (L.) Schrad, Pergularia to mentosa). The choice of extracts was based on activity against Foa using disc diffusion techniques and relative virulence. The most effective extracts (detected inhibition and relative virulence decreased below 50%) were chosen for direct bioautography test. Direct bioautography has a great importance based on effectiveness. Extracts from Acacia raddiana showed no effect on chromatograms. The best results were represented by ethyl acetate extract of Citrullus colocynthis fruits (7.75 +and- 1.06 mm) and ethyle acetate extract of Asteriscus graveolens stems (7.00+and -1.41 mm). The efficiency of some species especially Citrullus colocynthis indicates the presence of highly sensitive targets in foa, which can be exploited for the development of efficient treatment against Bayoud.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Photocatalytic r&#233;duction of nitrite and nitrate in aqueous suspension on ZnO</title>
		<link>http://www.webreview.dz/spip.php?article2121</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2121</guid>
		<dc:date>2015-04-06T11:57:42Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Messikh M.A., Sehili T.</dc:creator>


		<dc:subject>Ammoniac</dc:subject>
		<dc:subject>ZnO</dc:subject>
		<dc:subject>Nitrite</dc:subject>
		<dc:subject>Nitrate</dc:subject>
		<dc:subject>Pt/ZnO</dc:subject>

		<description>
&lt;p&gt;La r&#233;duction des ions nitrite et nitrate en ammoniac photocatalys&#233;e par ZnO et ZnO dop&#233; par le platine a &#233;t&#233; &#233;tudi&#233;e en pr&#233;sence de sulfate de sodium et de sulfite de sodium comme agents sacrifi&#233;s. La concentration optimum de nitrite et nitrate qui conduit &#224; la formation de l'ammoniac est de 10-4 M la vitesse de formation de l'ammoniac augmente en fonction du temps en pr&#233;sence de sulfite. En absence de lumi&#232;re NO2- et NO3- diminuent l&#233;g&#232;rement par effet d'adsorption sur le semiconduteur. L'effet du (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique398" rel="directory"&gt;Num&#233;ro 02&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot833" rel="tag"&gt;Ammoniac&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8020" rel="tag"&gt;ZnO&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8318" rel="tag"&gt;Nitrite&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8319" rel="tag"&gt;Nitrate&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8320" rel="tag"&gt;Pt/ZnO&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;La r&#233;duction des ions nitrite et nitrate en ammoniac photocatalys&#233;e par ZnO et ZnO dop&#233; par le platine a &#233;t&#233; &#233;tudi&#233;e en pr&#233;sence de sulfate de sodium et de sulfite de sodium comme agents sacrifi&#233;s. La concentration optimum de nitrite et nitrate qui conduit &#224; la formation de l'ammoniac est de 10-4 M la vitesse de formation de l'ammoniac augmente en fonction du temps en pr&#233;sence de sulfite. En absence de lumi&#232;re NO2- et NO3- diminuent l&#233;g&#232;rement par effet d'adsorption sur le semiconduteur. L'effet du Pt/ZnO a &#233;t&#233; discut&#233;. En pr&#233;sence de Pt/ZnO, la vitesse de formation de l'ammoniac est plus grande qu'en pr&#233;sence de ZnO. Le semiconducteur a &#233;t&#233; soumis &#224; une excitation d'&#233;nergie sup&#233;rieure &#224; sa largeur de bande interdite. Cette id&#233;e a &#233;t&#233; d&#233;velopp&#233;e pour la r&#233;duction photocatalytique des ions nitrites et nitrates en ammoniac.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>An optimization of SAPO-34 synthesis by factorial experiments </title>
		<link>http://www.webreview.dz/spip.php?article2122</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2122</guid>
		<dc:date>2015-04-06T10:30:37Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Azzouz A., Barjega R., Dimttriu E., Dorohoi D., Hulea V., Lutic D., Pop G.</dc:creator>


		<dc:subject>Silicoaluminophosphate SAPO-34</dc:subject>
		<dc:subject>Piperidine</dc:subject>
		<dc:subject>Synthesis optimisation</dc:subject>
		<dc:subject>Factorial design</dc:subject>

		<description>
&lt;p&gt;Les conditions optimales pour l'btention de SAPO &#8211; 34 pure, utilisant la piperdine comme agent structurant ont &#233;t&#233; d&#233;termin&#233;e par un programme exp&#233;rimental de type factotiel pour la planification des synth&#232;ses. Par la mise en &#339;uvre du mod&#232;le math&#233;matique, les conditions pour l'obtention du produit pur ont &#233;t&#233; &#233;tablies : la composition du gel exprim&#233;e par rapports molaires de 1.0 Al2O3 : 0.6 P2O5 : 1.1 Pip : 0.8 SiO2 : 100 H2O, chauffage &#224; 200&#176;C pendant 2 jours minimum. Des exp&#233;riences suppl&#233;mentaires ont (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique398" rel="directory"&gt;Num&#233;ro 02&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot8327" rel="tag"&gt;Silicoaluminophosphate SAPO-34&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8328" rel="tag"&gt;Piperidine&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8329" rel="tag"&gt;Synthesis optimisation&lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot8330" rel="tag"&gt;Factorial design&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Les conditions optimales pour l'btention de SAPO &#8211; 34 pure, utilisant la piperdine comme agent structurant ont &#233;t&#233; d&#233;termin&#233;e par un programme exp&#233;rimental de type factotiel pour la planification des synth&#232;ses. Par la mise en &#339;uvre du mod&#232;le math&#233;matique, les conditions pour l'obtention du produit pur ont &#233;t&#233; &#233;tablies : la composition du gel exprim&#233;e par rapports molaires de 1.0 Al2O3 : 0.6 P2O5 : 1.1 Pip : 0.8 SiO2 : 100 H2O, chauffage &#224; 200&#176;C pendant 2 jours minimum. Des exp&#233;riences suppl&#233;mentaires ont fourni plus d'informations sur l'&#233;valuation du syst&#232;me et sur la nature des produits secondaires. Il est important de mentionner que dans les conditions optimales, la piperidine conduit &#224; des produits sans ilots de silice.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

	</item>
<item xml:lang="fr">
		<title>Inthibition de la nitrosation de la morpholine par des polymeres styreniques</title>
		<link>http://www.webreview.dz/spip.php?article2123</link>
		<guid isPermaLink="true">http://www.webreview.dz/spip.php?article2123</guid>
		<dc:date>2015-04-06T10:30:04Z</dc:date>
		<dc:format>text/html</dc:format>
		<dc:language>fr</dc:language>
		<dc:creator>Belarbi L., Djaroud S., Guemra K., Mesli A.</dc:creator>


		<dc:subject>Inthibition de la nitrosation </dc:subject>
		<dc:subject>Morpholine </dc:subject>
		<dc:subject>Polymeres styreniques</dc:subject>

		<description>
&lt;p&gt;Le travail pr&#233;sent&#233; d&#233;crit la synth&#232;se de d&#233;riv&#233;s de pyrrole greff&#233;s &#224; des polym&#232;res styr&#233;niques obtenus par modification chimique de polychorom&#233;thylstyr&#232;ne. En effet le greffage des pyrroles et de ses d&#233;riv&#233;s dans des polym&#232;res non toxiques permet d'obtenir des agents efficaces pour l'emp&#234;chement de la nitrosation des amines et des compos&#233;s nitr&#233;s. La nitrosation des m&#233;dicaments et des produits alimentaires et cosm&#233;tiques [1-3] conduit &#224; des substances canc&#233;rig&#232;nes . Plusieurs tests de nitrosation ont &#233;t&#233; (...)&lt;/p&gt;


-
&lt;a href="http://www.webreview.dz/spip.php?rubrique398" rel="directory"&gt;Num&#233;ro 02&lt;/a&gt;

/ 
&lt;a href="http://www.webreview.dz/spip.php?mot9150" rel="tag"&gt;Inthibition de la nitrosation &lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9151" rel="tag"&gt;Morpholine &lt;/a&gt;, 
&lt;a href="http://www.webreview.dz/spip.php?mot9152" rel="tag"&gt;Polymeres styreniques&lt;/a&gt;

		</description>


 <content:encoded>&lt;div class='rss_chapo'&gt;&lt;p&gt;Le travail pr&#233;sent&#233; d&#233;crit la synth&#232;se de d&#233;riv&#233;s de pyrrole greff&#233;s &#224; des polym&#232;res styr&#233;niques obtenus par modification chimique de polychorom&#233;thylstyr&#232;ne. En effet le greffage des pyrroles et de ses d&#233;riv&#233;s dans des polym&#232;res non toxiques permet d'obtenir des agents efficaces pour l'emp&#234;chement de la nitrosation des amines et des compos&#233;s nitr&#233;s. La nitrosation des m&#233;dicaments et des produits alimentaires et cosm&#233;tiques [1-3] conduit &#224; des substances canc&#233;rig&#232;nes . Plusieurs tests de nitrosation ont &#233;t&#233; effectu&#233; sur la morpholine en pr&#233;sence de polym&#232;re synth&#233;tis&#233;s dans le pr&#233;sent travail. Les diff&#233;rents r&#233;sultats ont prouv&#233; l'efficacit&#233; de l'inhibition de cette r&#233;action notamment en phase h&#233;t&#233;rog&#232;ne.&lt;/p&gt;&lt;/div&gt;
		
		</content:encoded>


		

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