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				var str = 'Production de bioéthanol à partir de jus d&#039;orange de Rouïba: Production of bioethanol from orange juice of Rouïba';
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    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Jus+d%27orange+de+Rou%C3%AFba">Jus d&#039;orange de Rouïba</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Bio%C3%A9thanol">Bioéthanol</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=D%C3%A9shydratation">Déshydratation</a>]]></dcterms:subject>
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    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Production+de+Bio%C3%A9thanol">Production de Bioéthanol</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Bioethanol+Production">Bioethanol Production</a>]]></dcterms:subject>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Les+circonstances+%C3%A9cologiques+et+%C3%A9conomiques+actuelles+poussent+de+plus+en+plus+les+chercheurs+%C3%A0+l%E2%80%99%C3%A9chelle+internationalenotamment+en+Alg%C3%A9rie+%C3%A0+opter+pour+une+source+d%27%C3%A9nergie+renouvelable%2C+respectueuse+de+l%27environnement%2C+propre%2C+et+durable+tout+en+pr%C3%A9servant+les+r%C3%A9serves+p%C3%A9troli%C3%A8res+%C3%A0+la+g%C3%A9n%C3%A9ration+future.+Les+biocarburants+restent+l%27issue+la+plus+prometteuse+qui+peut+remplacer+les+carburants+des+sources+fossiles%2C+tout+au+moins+%C3%A0+les+incorporer+sous+forme+d%27additifs+%C3%A0+des+proportions+variables.+Ce+travail+consiste+%C3%A0+d%C3%A9shydrater+le+bio%C3%A9thanol+par+deux+m%C3%A9thodes+%C3%A0+savoir+%3A+-+la+distillation+fractionn%C3%A9e+%3B+-+et+les+tamis+mol%C3%A9culaires+de+type+A4.+De+plus%2C+la+caract%C3%A9risation+a+%C3%A9t%C3%A9+effectu%C3%A9e+sur+des+carburants+de+types+essences+incorpor%C3%A9es+de+10+%25+de+bio%C3%A9thanol.+Les+m%C3%A9langes+obtenus+ont+%C3%A9t%C3%A9+caract%C3%A9ris%C3%A9s+selon+des+essais+normalis%C3%A9s+tels+que+%3A+la+distillation+ASTM%2C+l%27indice+d%27octane%2C+la+tension+de+vapeur+REID%2C+etc.+Il+ressort+de+ce+travail+que+l%E2%80%99addition+de+10+%25+de+bio%C3%A9thanol+%C3%A0+l%E2%80%99essence+super+a+permis+une+am%C3%A9lioration+de+l%E2%80%99indice+d%E2%80%99octane+de+l%E2%80%99essence+allant+de+98+%C3%A0+100.">Les circonstances écologiques et économiques actuelles poussent de plus en plus les chercheurs à l’échelle internationalenotamment en Algérie à opter pour une source d&#039;énergie renouvelable, respectueuse de l&#039;environnement, propre, et durable tout en préservant les réserves pétrolières à la génération future. Les biocarburants restent l&#039;issue la plus prometteuse qui peut remplacer les carburants des sources fossiles, tout au moins à les incorporer sous forme d&#039;additifs à des proportions variables. Ce travail consiste à déshydrater le bioéthanol par deux méthodes à savoir : - la distillation fractionnée ; - et les tamis moléculaires de type A4. De plus, la caractérisation a été effectuée sur des carburants de types essences incorporées de 10 % de bioéthanol. Les mélanges obtenus ont été caractérisés selon des essais normalisés tels que : la distillation ASTM, l&#039;indice d&#039;octane, la tension de vapeur REID, etc. Il ressort de ce travail que l’addition de 10 % de bioéthanol à l’essence super a permis une amélioration de l’indice d’octane de l’essence allant de 98 à 100.</a>]]></dcterms:description>
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    <dcterms:source><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=48&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Revue+Nature+et+Technologie%3B+Vol.+14+No.+02+%282022%29%3B+01-13">Revue Nature et Technologie; Vol. 14 No. 02 (2022); 01-13</a>]]></dcterms:source>
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    <dcterms:source><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=48&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=2437-0312">2437-0312</a>]]></dcterms:source>
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    <dcterms:date><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=40&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=2022-06-30">2022-06-30</a>]]></dcterms:date>
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    <dcterms:title><![CDATA[<script>
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				var str = 'Effects of the Geometric Parameters on the Interfacial Stresses Bone/Implant';
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    <dcterms:title><![CDATA[<script>
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				var str = 'Effets des paramètres géométriques sur les contraintes interfaciales Os/implant';
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    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Bone">Bone</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Implant">Implant</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Thread">Thread</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Von+Mises+stress">Von Mises stress</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Interfacial+stress">Interfacial stress</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=MEF">MEF</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Bone%2FImplant">Bone/Implant</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Os">Os</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Implant">Implant</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Fil">Fil</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contrainte+de+von+Mises">Contrainte de von Mises</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Contrainte+interfaciale">Contrainte interfaciale</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=MEF">MEF</a>]]></dcterms:subject>
    <dcterms:subject><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=49&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Os%2FImplant">Os/Implant</a>]]></dcterms:subject>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Implantology+is+the+fixation+of+an+artificial+root+made+of+titanium+in+the+mandibular+bone%2C+emerging+from+the+gum+and+supporting+atooth+or+prosthetic+element.+In+this+work%2C+the+mechanical+behavior+of+dental+implants+with+different+geometric+shapes+is+analyzednumerically+by+the+finite+element+method.+The+first+objective+of+this+study+is+to+show+the+importance+of+the+geometric+parameters+suchas+length+on+the+variation+of+the+equivalent+stress+in+the+close+vicinity+of+the+bone+%2F+implant+interface.+These+interfacial+stresses+areevaluated+on+the+outside+and+inside+of+the+net.+The+results+clearly+show+that+the+best+model+of+the+implant+obtained+is+that+of+10.43+mmin+length.+The+second+objective+is+focused+on+the+distribution+of+von+Mises+stress+in+the+bone+and+the+dental+implant+in+different+loadingcases.+It+is+important+to+know+the+effects+of+this+type+of+treatment+to+obtain+a+primary+stabilization+of+the+structure+or+at+the+interfacebone%2Fimplant.">Implantology is the fixation of an artificial root made of titanium in the mandibular bone, emerging from the gum and supporting atooth or prosthetic element. In this work, the mechanical behavior of dental implants with different geometric shapes is analyzednumerically by the finite element method. The first objective of this study is to show the importance of the geometric parameters suchas length on the variation of the equivalent stress in the close vicinity of the bone / implant interface. These interfacial stresses areevaluated on the outside and inside of the net. The results clearly show that the best model of the implant obtained is that of 10.43 mmin length. The second objective is focused on the distribution of von Mises stress in the bone and the dental implant in different loadingcases. It is important to know the effects of this type of treatment to obtain a primary stabilization of the structure or at the interfacebone/implant.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=L%27implantologie+est+la+fixation+d%27une+racine+artificielle+en+titane+dans+l%27os+mandibulaire%2C+%C3%A9mergeant+de+la+gencive+et+supportant+une+dent+ou+un+%C3%A9l%C3%A9ment+proth%C3%A9tique.+Dans+ce+travail%2C+le+comportement+m%C3%A9canique+d%27implants+dentaires+de+diff%C3%A9rentes+formes+g%C3%A9om%C3%A9triques+est+analys%C3%A9+num%C3%A9riquement+par+la+m%C3%A9thode+des+%C3%A9l%C3%A9ments+finis.+Le+premier+objectif+de+cette+%C3%A9tude+est+de+montrer+l%27importance+des+param%C3%A8tres+g%C3%A9om%C3%A9triques+tels+que+la+longueur+sur+la+variation+de+la+valeur+%C3%A9quivalente+de+l%27indice+de+r%C3%A9fraction.+la+longueur+sur+la+variation+de+la+contrainte+%C3%A9quivalente+dans+le+voisinage+imm%C3%A9diat+de+l%27interface+os%2Fimplant.+Ces+contraintes+interfaciales+sont+%C3%A9valu%C3%A9es+%C3%A0+l%27ext%C3%A9rieur+et+%C3%A0+l%27int%C3%A9rieur+du+filet.+Les+r%C3%A9sultats+montrent+clairement+que+le+meilleur+mod%C3%A8le+d%27implant+obtenu+est+celui+de+10%2C43+mm+de+longueur.+Le+deuxi%C3%A8me+objectif+est+centr%C3%A9+sur+la+distribution+des+contraintes+de+von+Mises+dans+l%27os+et+l%27implant+dentaire+dans+diff%C3%A9rents+cas+de+chargement.+cas+de+chargement.+Il+est+important+de+conna%C3%AEtre+les+effets+de+ce+type+de+traitement+pour+obtenir+une+stabilisation+primaire+de+la+structure+ou+%C3%A0+l%27interface+os%2Fimplant.">L&#039;implantologie est la fixation d&#039;une racine artificielle en titane dans l&#039;os mandibulaire, émergeant de la gencive et supportant une dent ou un élément prothétique. Dans ce travail, le comportement mécanique d&#039;implants dentaires de différentes formes géométriques est analysé numériquement par la méthode des éléments finis. Le premier objectif de cette étude est de montrer l&#039;importance des paramètres géométriques tels que la longueur sur la variation de la valeur équivalente de l&#039;indice de réfraction. la longueur sur la variation de la contrainte équivalente dans le voisinage immédiat de l&#039;interface os/implant. Ces contraintes interfaciales sont évaluées à l&#039;extérieur et à l&#039;intérieur du filet. Les résultats montrent clairement que le meilleur modèle d&#039;implant obtenu est celui de 10,43 mm de longueur. Le deuxième objectif est centré sur la distribution des contraintes de von Mises dans l&#039;os et l&#039;implant dentaire dans différents cas de chargement. cas de chargement. Il est important de connaître les effets de ce type de traitement pour obtenir une stabilisation primaire de la structure ou à l&#039;interface os/implant.</a>]]></dcterms:description>
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</rdf:Description><rdf:Description rdf:about="http://www.ajpsdz.org/dx/items/show/8468">
    <dcterms:title><![CDATA[<script>
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				var str = 'Empreinte anthropique sur la dynamique des écosystèmes de la forêt classée d’Amou-Mono au Togo: Anthropogenic impact on ecosystem dynamics in the Amou-Mono classified forest in Togo';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=In+recent+years%2C+Togo%27s+protected+areas+have+been+subject+to+a+worrying+process+of+anthropisation.+This+has+led+to+a+decline+in+forest+ecosystems%2C+their+biodiversity+and+their+functions.+The+general+objective+of+this+study+is+to+assess+the+state+of+conservation+of+the+classified+forest+of+Amou-Mono+between+1986+and+2021.+More+specifically%2C+it+aims+to%3A+%28i%29+characterize+the+dynamics+of+land+use+from+1986%2C+2000%2C+2013+and+2021+and%2C+%28ii%29+assess+the+impact+of+changes+in+land+use+on+the+potential+for+carbon+sequestration.+A+multi-date+classification+of+Landsat+images+for+the+years+1986%2C+2000%2C+2013+and+2021+made+it+possible+to+quantify+and+assess+changes+in+occupation.+The+dynamics+of+land+use+between+1986+and+2021+is+mainly+reflected+by+a+regression+of+dense%2Friparian+forests+%2881.40%25%29+and+open+forests%2Fwooded+savannahs+%2867.79%25%29+and+the+progression+of+wooded%2Fshrubby+Savannah+%28172.93%25%29.+Anthropogenic+formations%3A+Fields%2Ffallow+and+Agglomerations%2FBare+soils%2C+absent+in+1986%2C+occupy+in+2021+respective+proportions+of+38.1+%25+and+2.19%25.+Human+activities%2C+particularly+logging+and+agricultural+clearing%2C+are+causing+fragmentation+and+regression+of+forest+ecosystems.+Unless+action+is+taken+to+reverse+the+trend%2C+the+conservation+of+biodiversity+and+ecosystem+functions+in+this+classified+forest+will+be+increasingly+threatened.">In recent years, Togo&#039;s protected areas have been subject to a worrying process of anthropisation. This has led to a decline in forest ecosystems, their biodiversity and their functions. The general objective of this study is to assess the state of conservation of the classified forest of Amou-Mono between 1986 and 2021. More specifically, it aims to: (i) characterize the dynamics of land use from 1986, 2000, 2013 and 2021 and, (ii) assess the impact of changes in land use on the potential for carbon sequestration. A multi-date classification of Landsat images for the years 1986, 2000, 2013 and 2021 made it possible to quantify and assess changes in occupation. The dynamics of land use between 1986 and 2021 is mainly reflected by a regression of dense/riparian forests (81.40%) and open forests/wooded savannahs (67.79%) and the progression of wooded/shrubby Savannah (172.93%). Anthropogenic formations: Fields/fallow and Agglomerations/Bare soils, absent in 1986, occupy in 2021 respective proportions of 38.1 % and 2.19%. Human activities, particularly logging and agricultural clearing, are causing fragmentation and regression of forest ecosystems. Unless action is taken to reverse the trend, the conservation of biodiversity and ecosystem functions in this classified forest will be increasingly threatened.</a>]]></dcterms:description>
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</rdf:Description><rdf:Description rdf:about="http://www.ajpsdz.org/dx/items/show/8467">
    <dcterms:title><![CDATA[<script>
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				var str = 'Efficacité des conservateurs acides et hydrocolloïdes alimentaires sur la durée de conservation du lait cru à température ambiante: Effectiveness of food acid and hydrocolloid additives on the shelf life of raw milk at room temperature';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=The+present+study+was+conducted+to+investigate+the+effects+of+acid+preservatives+%28AP%29+and+food+hydrocolloids+%28FH%29+on+the+shelf+life+of+raw+milk+at+room+temperature+%28between+20+to+25%C2%B0C%29.+Raw+milk+samples+were+treated+with+different+doses+of+acid+preservatives+%28citric+acid%3A+E330+and+ascorbic+acid%3A+E300%29+and+food+hydrocolloids+%28food+agar-agar%3A+E406+and+starch%3A+E1400%29+to+determine+the+optimal+dose+that+could+prolong+the+shelf+life+of+raw+milk+while+maintaining+its+physicochemical%2C+microbiological%2C+and+organoleptic+quality.+The+results+showed+that+the+acid+preservatives+helped+preserve+the+microbiological+quality+of+the+milk+samples+without+significant+effects+on+the+final+pH+values.+The+food+hydrocolloids+prevented+milk+coagulation+in+the+presence+of+acids+only+when+applied+at+a+dose+%E2%89%A4+0.3+g+in+100+mL+of+milk.+Citric+acid+was+more+effective+than+ascorbic+acid%2C+while+food+agar-agar+%28E406%29+was+the+best+food+hydrocolloid.+Acid+preservatives+and+food+hydrocolloids+can+be+effective+tools+for+prolonging+the+shelf+life+of+raw+milk+at+room+temperature+and+improving+food+safety+and+nutrition+in+regions+where+raw+milk+preservation+is+a+challenge.">The present study was conducted to investigate the effects of acid preservatives (AP) and food hydrocolloids (FH) on the shelf life of raw milk at room temperature (between 20 to 25°C). Raw milk samples were treated with different doses of acid preservatives (citric acid: E330 and ascorbic acid: E300) and food hydrocolloids (food agar-agar: E406 and starch: E1400) to determine the optimal dose that could prolong the shelf life of raw milk while maintaining its physicochemical, microbiological, and organoleptic quality. The results showed that the acid preservatives helped preserve the microbiological quality of the milk samples without significant effects on the final pH values. The food hydrocolloids prevented milk coagulation in the presence of acids only when applied at a dose ≤ 0.3 g in 100 mL of milk. Citric acid was more effective than ascorbic acid, while food agar-agar (E406) was the best food hydrocolloid. Acid preservatives and food hydrocolloids can be effective tools for prolonging the shelf life of raw milk at room temperature and improving food safety and nutrition in regions where raw milk preservation is a challenge.</a>]]></dcterms:description>
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=The+pastures+of+northwestern+Tunisia+have+undergone+several+changes+over+the+last+decades.%26nbsp%3B+The+main+results+are+the+decrease+in+rangelands%2C+the+increase+in+the+total+animal+load%2C+the+increase+in+the+cultivated+land%2C+the+increase+in+the+production+costs+particularly+the+purchase+of+concentrated+feeds%2C+and+the+low+subsidies+from+the+state.+All+these+factors+are+changing+the+livestock+system%2C+mainly+dairy+cows.+The+present+study%2C+therefore%2C+sought+to+characterize+farm+household+systems+that+seem+to+be+currently+adapted+in+the+Sejnane+plain+using+a+typology.+We+focus+on+understanding+the+variables+that+contribute+to+raising+farmers%27+choice+of+breeding+system+in+the+study+area.+We+interviewed+44+farmers.+Furthermore%2C+we+analyzed+their+responses+using+descriptive+statistics%2C+ascending+hierarchical+classification+AMP+and+principal+components+analysis+PCA.+The+results+show+that+four+types+of+livestock+systems+could+be+characterized%2C+depending+on+pasture+and+production.+Moreover%2C+they+suggest+that+landless+pastoralists+are+more+vulnerable+than+agro-pastoralists.">The pastures of northwestern Tunisia have undergone several changes over the last decades.&amp;nbsp; The main results are the decrease in rangelands, the increase in the total animal load, the increase in the cultivated land, the increase in the production costs particularly the purchase of concentrated feeds, and the low subsidies from the state. All these factors are changing the livestock system, mainly dairy cows. The present study, therefore, sought to characterize farm household systems that seem to be currently adapted in the Sejnane plain using a typology. We focus on understanding the variables that contribute to raising farmers&#039; choice of breeding system in the study area. We interviewed 44 farmers. Furthermore, we analyzed their responses using descriptive statistics, ascending hierarchical classification AMP and principal components analysis PCA. The results show that four types of livestock systems could be characterized, depending on pasture and production. Moreover, they suggest that landless pastoralists are more vulnerable than agro-pastoralists.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Les+p%C3%A2turages+du+nord-ouest+de+la+Tunisie+ont+subi+plusieurs+changements+au+cours+des+derni%C3%A8res+d%C3%A9cennies.+Les+principaux+r%C3%A9sultats+sont+la+diminution+des+terres+de+parcours%2C+l%27augmentation+de+la+charge+animale+totale%2C+l%27augmentation+des+terres+cultiv%C3%A9es%2C+l%27augmentation+des+co%C3%BBts+de+production%2C+en+particulier+l%27achat+d%27aliments+concentr%C3%A9s%2C+et+les+faibles+subventions+de+l%27%C3%89tat.+Tous+ces+facteurs+modifient+le+syst%C3%A8me+d%27%C3%A9levage%2C+principalement+celui+des+vaches+laiti%C3%A8res.+La+pr%C3%A9sente+%C3%A9tude+a+donc+cherch%C3%A9+%C3%A0+caract%C3%A9riser+les+syst%C3%A8mes+des+m%C3%A9nages+agricoles+qui+semblent+actuellement+adapt%C3%A9s+dans+la+plaine+de+Sejnane+%C3%A0+l%27aide+d%27une+typologie.+Nous+nous+concentrons+sur+la+compr%C3%A9hension+des+variables+qui+contribuent+%C3%A0+augmenter+le+choix+du+syst%C3%A8me+d%27%C3%A9levage+par+les+agriculteurs+dans+la+zone+d%27%C3%A9tude.+Nous+avons+interrog%C3%A9+44+agriculteurs.+En+outre%2C+nous+avons+analys%C3%A9+leurs+r%C3%A9ponses+%C3%A0+l%27aide+de+statistiques+descriptives%2C+d%27une+classification+hi%C3%A9rarchique+ascendante+AMP+et+d%27une+analyse+en+composantes+principales+ACP.+Les+r%C3%A9sultats+montrent+que+quatre+types+de+syst%C3%A8mes+d%27%C3%A9levage+peuvent+%C3%AAtre+caract%C3%A9ris%C3%A9s%2C+en+fonction+des+p%C3%A2turages+et+de+la+production.+En+outre%2C+ils+sugg%C3%A8rent+que+les+%C3%A9leveurs+sans+terre+sont+plus+vuln%C3%A9rables+que+les+agro-%C3%A9leveurs.">Les pâturages du nord-ouest de la Tunisie ont subi plusieurs changements au cours des dernières décennies. Les principaux résultats sont la diminution des terres de parcours, l&#039;augmentation de la charge animale totale, l&#039;augmentation des terres cultivées, l&#039;augmentation des coûts de production, en particulier l&#039;achat d&#039;aliments concentrés, et les faibles subventions de l&#039;État. Tous ces facteurs modifient le système d&#039;élevage, principalement celui des vaches laitières. La présente étude a donc cherché à caractériser les systèmes des ménages agricoles qui semblent actuellement adaptés dans la plaine de Sejnane à l&#039;aide d&#039;une typologie. Nous nous concentrons sur la compréhension des variables qui contribuent à augmenter le choix du système d&#039;élevage par les agriculteurs dans la zone d&#039;étude. Nous avons interrogé 44 agriculteurs. En outre, nous avons analysé leurs réponses à l&#039;aide de statistiques descriptives, d&#039;une classification hiérarchique ascendante AMP et d&#039;une analyse en composantes principales ACP. Les résultats montrent que quatre types de systèmes d&#039;élevage peuvent être caractérisés, en fonction des pâturages et de la production. En outre, ils suggèrent que les éleveurs sans terre sont plus vulnérables que les agro-éleveurs.</a>]]></dcterms:description>
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    <dcterms:identifier><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=43&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=https%3A%2F%2Fjournals.univ-chlef.dz%2Findex.php%2Fnatec%2Farticle%2Fview%2F156">https://journals.univ-chlef.dz/index.php/natec/article/view/156</a>]]></dcterms:identifier>
</rdf:Description><rdf:Description rdf:about="http://www.ajpsdz.org/dx/items/show/8465">
    <dcterms:title><![CDATA[<script>
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				var str = 'Air layering of three agroforestry species in the Guinean savannah highlands of Adamawa in Cameroon';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Ximenia+americana%2C+Vitex+doniana+and+Lophira+lanceolata+are+species+prized+by+the+populations+of+the+Guinean+savannah+highlands+of+Cameroon.+They+are+unfortunately+still+in+the+wild+where+they+are+subjected+to+various+pressures.+From+the+perspective+of+the+conservation+and+enhancement+of+local+biodiversity%2C+their+domestication+appears+necessary.+The+objective+of+the+work+is+to+study+the+vegetative+propagation+by+air+layering+of+these+fruit+trees.+The+experimental+device+used+is+a+split-split-plot+with+three+repetitions.+Species+represents+the+main+treatment%3B+the+substrates+constitute+the+secondary+treatment+while+the+covering+of+the+layers+with+aluminum+foil+represents+the+tertiary+treatment.+The+experimental+unit+was+30+layers.+The+rooting+rate+of+layers+varies+significantly+%280.000%26lt%3B0.001%29+from+48.88%C2%B11.89%25+in+Ximenia+americana+to+81.38%C2%B12.08%25+in+Lophira+lanceolata.+Sphagnum+was+the+best+substrate+with+69.63%C2%B11.38%25+against+61.66%C2%B11.54%25+for+the+black+soil-sawdust+mixture.+The+analysis+of+variance+reveals+a+significant+difference+for+the+substrates+%280.0025%26lt%3B0.01%29.+Covering+the+layers+with+aluminum+foil+presented+a+rate+of+69.44%C2%B12.15%25+while+the+uncovered+layers+presented+61.85%C2%B11.54%25%2C+the+analysis+of+variance+shows+a+significant+difference+%280%2C0031%26lt%3B0.01%29.+Lophira+lanceolata+exhibited+the+best+air+layering+ability%3B+the+rooted+layers+were+weaned+and+acclimatized+for+two+months+before+being+transferred+to+the+field.+During+this+process+19%25+and+52%25+respectively+of+the+layers+of+Vitex+doniana+and+Ximenia+americana+flowered.+This+inexpensive+technique+is+an+essential+step+in+the+process+of+their+domestication.">Ximenia americana, Vitex doniana and Lophira lanceolata are species prized by the populations of the Guinean savannah highlands of Cameroon. They are unfortunately still in the wild where they are subjected to various pressures. From the perspective of the conservation and enhancement of local biodiversity, their domestication appears necessary. The objective of the work is to study the vegetative propagation by air layering of these fruit trees. The experimental device used is a split-split-plot with three repetitions. Species represents the main treatment; the substrates constitute the secondary treatment while the covering of the layers with aluminum foil represents the tertiary treatment. The experimental unit was 30 layers. The rooting rate of layers varies significantly (0.000&amp;lt;0.001) from 48.88±1.89% in Ximenia americana to 81.38±2.08% in Lophira lanceolata. Sphagnum was the best substrate with 69.63±1.38% against 61.66±1.54% for the black soil-sawdust mixture. The analysis of variance reveals a significant difference for the substrates (0.0025&amp;lt;0.01). Covering the layers with aluminum foil presented a rate of 69.44±2.15% while the uncovered layers presented 61.85±1.54%, the analysis of variance shows a significant difference (0,0031&amp;lt;0.01). Lophira lanceolata exhibited the best air layering ability; the rooted layers were weaned and acclimatized for two months before being transferred to the field. During this process 19% and 52% respectively of the layers of Vitex doniana and Ximenia americana flowered. This inexpensive technique is an essential step in the process of their domestication.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Ximenia+americana%2C+Vitex+doniana+et+Lophira+lanceolata+sont+des+esp%C3%A8ces+pris%C3%A9es+par+les+populations+de+la+savane+guin%C3%A9enne+des+hauts+plateaux+du+Cameroun.+Elles+sont+malheureusement+encore+%C3%A0+l%27%C3%A9tat+sauvage+o%C3%B9+elles+sont+soumises+%C3%A0+diverses+pressions.+Dans+une+perspective+de+conservation+et+de+valorisation+de+la+biodiversit%C3%A9+locale%2C+leur+domestication+appara%C3%AEt+n%C3%A9cessaire.+L%27objectif+de+ce+travail+est+d%27%C3%A9tudier+la+multiplication+v%C3%A9g%C3%A9tative+par+marcottage+a%C3%A9rien+de+ces+arbres+fruitiers.+Le+dispositif+exp%C3%A9rimental+utilis%C3%A9+est+un+split-split-plot+avec+trois+r%C3%A9p%C3%A9titions.+L%27esp%C3%A8ce+repr%C3%A9sente+le+traitement+principal+%3B+les+substrats+constituent+le+traitement+secondaire+tandis+que+le+recouvrement+des+couches+par+du+papier+d%27aluminium+repr%C3%A9sente+le+traitement+tertiaire.+L%27unit%C3%A9+exp%C3%A9rimentale+%C3%A9tait+de+30+couches.+Le+taux+d%27enracinement+des+couches+varie+significativement+%280%2C000%26lt%3B0%2C001%29+de+48%2C88%C2%B11%2C89%25+chez+Ximenia+americana+%C3%A0+81%2C38%C2%B12%2C08%25+chez+Lophira+lanceolata.+La+sphaigne+est+le+meilleur+substrat+avec+69%2C63%C2%B11%2C38%25+contre+61%2C66%C2%B11%2C54%25+pour+le+m%C3%A9lange+terre+noire-sciure.+L%27analyse+de+variance+r%C3%A9v%C3%A8le+une+diff%C3%A9rence+significative+pour+les+substrats+%280%2C0025%26lt%3B0%2C01%29.+La+couverture+des+couches+par+une+feuille+d%27aluminium+a+pr%C3%A9sent%C3%A9+un+taux+de+69%2C44%C2%B12%2C15%25+alors+que+les+couches+non+couvertes+ont+pr%C3%A9sent%C3%A9+61%2C85%C2%B11%2C54%25%2C+l%27analyse+de+la+variance+montre+une+diff%C3%A9rence+significative+%280%2C0031%26lt%3B0%2C01%29.+Lophira+lanceolata+a+montr%C3%A9+la+meilleure+capacit%C3%A9+de+marcottage+%C3%A0+l%27air+%3B+les+couches+enracin%C3%A9es+ont+%C3%A9t%C3%A9+sevr%C3%A9es+et+acclimat%C3%A9es+pendant+deux+mois+avant+d%27%C3%AAtre+transf%C3%A9r%C3%A9es+au+champ.+Au+cours+de+ce+processus%2C+19+%25+et+52+%25+respectivement+des+couches+de+Vitex+doniana+et+de+Ximenia+americana+ont+fleuri.+Cette+technique+peu+co%C3%BBteuse+est+une+%C3%A9tape+essentielle+dans+le+processus+de+domestication+de+ces+plantes.">Ximenia americana, Vitex doniana et Lophira lanceolata sont des espèces prisées par les populations de la savane guinéenne des hauts plateaux du Cameroun. Elles sont malheureusement encore à l&#039;état sauvage où elles sont soumises à diverses pressions. Dans une perspective de conservation et de valorisation de la biodiversité locale, leur domestication apparaît nécessaire. L&#039;objectif de ce travail est d&#039;étudier la multiplication végétative par marcottage aérien de ces arbres fruitiers. Le dispositif expérimental utilisé est un split-split-plot avec trois répétitions. L&#039;espèce représente le traitement principal ; les substrats constituent le traitement secondaire tandis que le recouvrement des couches par du papier d&#039;aluminium représente le traitement tertiaire. L&#039;unité expérimentale était de 30 couches. Le taux d&#039;enracinement des couches varie significativement (0,000&amp;lt;0,001) de 48,88±1,89% chez Ximenia americana à 81,38±2,08% chez Lophira lanceolata. La sphaigne est le meilleur substrat avec 69,63±1,38% contre 61,66±1,54% pour le mélange terre noire-sciure. L&#039;analyse de variance révèle une différence significative pour les substrats (0,0025&amp;lt;0,01). La couverture des couches par une feuille d&#039;aluminium a présenté un taux de 69,44±2,15% alors que les couches non couvertes ont présenté 61,85±1,54%, l&#039;analyse de la variance montre une différence significative (0,0031&amp;lt;0,01). Lophira lanceolata a montré la meilleure capacité de marcottage à l&#039;air ; les couches enracinées ont été sevrées et acclimatées pendant deux mois avant d&#039;être transférées au champ. Au cours de ce processus, 19 % et 52 % respectivement des couches de Vitex doniana et de Ximenia americana ont fleuri. Cette technique peu coûteuse est une étape essentielle dans le processus de domestication de ces plantes.</a>]]></dcterms:description>
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				var str = 'Effect of incorporating cassava peel flour on the physico-chemical and nutritional quality of hens&#039; eggs&quot;ISA BROWN&quot;';
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				var str = 'Effet de l’incorporation de la farine d’épluchures de manioc sur la composition physico-chimique et nutritionnelle des œufs de poule &quot;ISA BROWN&quot;';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=The+substitution+of+maize+in+poultry+feed+by+the+incorporation+of+cassava+peel+meal+is+mainly+aimed+at+reducing+the+production+cost+of+the+feed+while+covering+all+the+nutritional+requirements+of+the+hens.+This+study+highlights+the+nutritional+composition+of+eggs+from+hens+fed+a+feed+containing+cassava+peel+meal.+Specifically%2C+the+effects+of+incorporating+cassava+peel+meal+at+increasing+rates+on+the+nutritional+value+of+the+hens%27+eggs+were+assessed%2C+and+subsequently%2C+the+presence+of+hydrocyanic+acid+in+these+eggs+from+the+peel+was+investigated.+The+meal+is+incorporated+at+rates+of+0+%25%2C+10+%25%2C+20+%25+and+30%25+respectively+into+chicken+feeds.+Proximal+analyses+are+performed+on+30+eggs+from+each+feed.+These+eggs+contained+%287.7-8.4+g%2F100g%29+fat%2C+%2811.87-12.8+g%2F100g%29+protein%2C+%282.2-2.8+g%2F100g%29+carbohydrate%2C+%280.3-0.4+g%2F100g%29+fiber+and+%280.83-0.89+g%2F100g%29+ash.+These+contents+are+similar+to+those+of+chicken+eggs+in+general%2C+regardless+of+the+level+of+incorporation%2C+and+the+hydrocyanic+acid+content+is+almost+zero.">The substitution of maize in poultry feed by the incorporation of cassava peel meal is mainly aimed at reducing the production cost of the feed while covering all the nutritional requirements of the hens. This study highlights the nutritional composition of eggs from hens fed a feed containing cassava peel meal. Specifically, the effects of incorporating cassava peel meal at increasing rates on the nutritional value of the hens&#039; eggs were assessed, and subsequently, the presence of hydrocyanic acid in these eggs from the peel was investigated. The meal is incorporated at rates of 0 %, 10 %, 20 % and 30% respectively into chicken feeds. Proximal analyses are performed on 30 eggs from each feed. These eggs contained (7.7-8.4 g/100g) fat, (11.87-12.8 g/100g) protein, (2.2-2.8 g/100g) carbohydrate, (0.3-0.4 g/100g) fiber and (0.83-0.89 g/100g) ash. These contents are similar to those of chicken eggs in general, regardless of the level of incorporation, and the hydrocyanic acid content is almost zero.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=La+substitution+du+ma%C3%AFs+dans+l%E2%80%99alimentation+de+volaille+par+l%E2%80%99incorporation+de+la+farine+de+manioc+vise+surtout+%C3%A0+r%C3%A9duire+le+co%C3%BBt+de+production+de+l%E2%80%99aliment+tout+en+couvrant+l%E2%80%99ensemble+des+besoins+nutritionnels+des+poules.+Cette+%C3%A9tude+met+en+%C3%A9vidence+la+composition+nutritionnelle+des+%C5%93ufs+de+poules+nourries+avec+un+aliment+contenant+de+la+farine+d%E2%80%99%C3%A9pluchures+de+manioc.+Il+s%E2%80%99agit+surtout%2C+d%E2%80%99%C3%A9valuer+les+effets+de+l%E2%80%99incorporation+de+la+farine+d%E2%80%99%C3%A9pluchures+de+manioc+%C3%A0+des+taux+croissants+sur+la+valeur+nutritionnelle+des+%C5%93ufs+de+poules%2C+puis+de+rechercher+la+pr%C3%A9sence+d%E2%80%99acide+cyanhydrique+dans+ces+%C5%93ufs.+La+farine+est+incorpor%C3%A9e+%C3%A0+des+taux+de+0+%25+%3B+10+%25+%3B+20+%25+et+30+%25+respectivement+dans+les+aliments+pour+poulets.+Des+analyses+proximales+sont+r%C3%A9alis%C3%A9es+sur+30+%C5%93ufs+issus+de+chaque+aliment.+Les+r%C3%A9sultats+obtenus+montrent+que+les+%C5%93ufs+contiennent+%287%2C7+%C3%A0+8%2C4+g%2F100g%29+de+lipides%2C+%2811%2C87+%C3%A0+12%2C8+g%2F100g%29+de+prot%C3%A9ines%2C+%282%2C2+%C3%A0+2%2C8%26nbsp%3Bg%2F100g%29+de+glucides%2C+%280%2C3+%C3%A0+0%2C4+g%2F100g%29+de+fibres+et+%280%2C83+%C3%A0+0%2C89+g%2F100g%29+de+cendres.+Ces+teneurs+sont+similaires+%C3%A0+celles+des+%C5%93ufs+de+poules+en+g%C3%A9n%C3%A9ral+quel+que+soit+le+niveau+d%E2%80%99incorporation%2C+et+les+teneurs+en+acide+cyanhydrique+y+sont+quasiment+nulles.">La substitution du maïs dans l’alimentation de volaille par l’incorporation de la farine de manioc vise surtout à réduire le coût de production de l’aliment tout en couvrant l’ensemble des besoins nutritionnels des poules. Cette étude met en évidence la composition nutritionnelle des œufs de poules nourries avec un aliment contenant de la farine d’épluchures de manioc. Il s’agit surtout, d’évaluer les effets de l’incorporation de la farine d’épluchures de manioc à des taux croissants sur la valeur nutritionnelle des œufs de poules, puis de rechercher la présence d’acide cyanhydrique dans ces œufs. La farine est incorporée à des taux de 0 % ; 10 % ; 20 % et 30 % respectivement dans les aliments pour poulets. Des analyses proximales sont réalisées sur 30 œufs issus de chaque aliment. Les résultats obtenus montrent que les œufs contiennent (7,7 à 8,4 g/100g) de lipides, (11,87 à 12,8 g/100g) de protéines, (2,2 à 2,8&amp;nbsp;g/100g) de glucides, (0,3 à 0,4 g/100g) de fibres et (0,83 à 0,89 g/100g) de cendres. Ces teneurs sont similaires à celles des œufs de poules en général quel que soit le niveau d’incorporation, et les teneurs en acide cyanhydrique y sont quasiment nulles.</a>]]></dcterms:description>
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    <dcterms:date><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=40&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=2023-07-06">2023-07-06</a>]]></dcterms:date>
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    <dcterms:identifier><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=43&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=https%3A%2F%2Fjournals.univ-chlef.dz%2Findex.php%2Fnatec%2Farticle%2Fview%2F153">https://journals.univ-chlef.dz/index.php/natec/article/view/153</a>]]></dcterms:identifier>
</rdf:Description><rdf:Description rdf:about="http://www.ajpsdz.org/dx/items/show/8463">
    <dcterms:title><![CDATA[<script>
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				var str = 'Composting-methanization of solid urban bio-waste from the municipality of Chlef (Algeria)';
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				var str = 'Compostage-méthanisation des fermentescibles solides urbains de la commune de Chlef (Algérie)';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=In+Chlef%2C+the+management+of+urban+solid+bio-waste+is+limited+to+%22all+in+controlled+landfill+or+in+wild+landfill%22.+This+bio-waste+can+be+treated+by+composting-methanization.+With+this+in+mind%2C+two+temperature+regimes+were+chosen%2C+the+mesophilic+regime+%2835%C2%B0C%29+and+the+thermophilic+regime+%2855%C2%B0C%29.+The+choice+of+a+neutral+pH+is+an+optimal+value+indicating+the+stability+and+the%26nbsp%3Bgood+progress+of+the+anaerobic+digestion.+As+well+as+monitoring+the+parameters+of+the+composting+process.+The+results+of+the+composting+process+show+that+the+values+of+temperature+%2835%C2%B0C+to+62%C2%B0C%29%2C+pH+%285+to+8%29%2C+moisture+content+%2860%25+and+40%25%29+and+percentage+of+organic+matter+%2874%25+to+41%25%29+indicate+that+the+fermentation+process+is%26nbsp%3Bgoing+well.+The+composting+process+enters+the+cooling+phase+after+60th+day+of+fermentation.+While+the+results+of+the+methanization+show+that+a+substrate+with+an+organic+matter+content+of+73%25+causes+an+accumulation+of+acids+in+the+digester+and+a+stop+of+the+reaction+in+mesophilic+conditions.+Therefore%2C+the+thermophilic+mode+is+more+suitable+for+the+anaerobic+degradation+of+raw+bio-waste.+The+tests+were+conclusive+in+obtaining+a+flammable+biogas.+The+values+of+the+VFA+%28Volatile+Fatty+Acid%29%2FACT+%28Alkalimetric+Title%29+ratios+below+0.1+show+the%26nbsp%3Bgood+functioning+of+the+anaerobic+digestion.+The+methanization+of+two+masses+of+substrate+at+the+beginning+and+during+the+cooling+phase+of+composting+allows+a%26nbsp%3Bgain+in+residence+time%2C+thus+a+lower+energy+cost.">In Chlef, the management of urban solid bio-waste is limited to &quot;all in controlled landfill or in wild landfill&quot;. This bio-waste can be treated by composting-methanization. With this in mind, two temperature regimes were chosen, the mesophilic regime (35°C) and the thermophilic regime (55°C). The choice of a neutral pH is an optimal value indicating the stability and the&amp;nbsp;good progress of the anaerobic digestion. As well as monitoring the parameters of the composting process. The results of the composting process show that the values of temperature (35°C to 62°C), pH (5 to 8), moisture content (60% and 40%) and percentage of organic matter (74% to 41%) indicate that the fermentation process is&amp;nbsp;going well. The composting process enters the cooling phase after 60th day of fermentation. While the results of the methanization show that a substrate with an organic matter content of 73% causes an accumulation of acids in the digester and a stop of the reaction in mesophilic conditions. Therefore, the thermophilic mode is more suitable for the anaerobic degradation of raw bio-waste. The tests were conclusive in obtaining a flammable biogas. The values of the VFA (Volatile Fatty Acid)/ACT (Alkalimetric Title) ratios below 0.1 show the&amp;nbsp;good functioning of the anaerobic digestion. The methanization of two masses of substrate at the beginning and during the cooling phase of composting allows a&amp;nbsp;gain in residence time, thus a lower energy cost.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=A+Chlef%2C+la%26nbsp%3Bgestion+des+bio-d%C3%A9chets+solides+urbains+se+limite+%C3%A0+%C2%AB+tout+%C3%A0+la+d%C3%A9charge+contr%C3%B4l%C3%A9e+ou+sauvage%C2%BB.+Ces+bio-d%C3%A9chets+peuvent+%C3%AAtre+trait%C3%A9s+par+compostage-m%C3%A9thanisation.+Dans+cette+optique%2C+deux+r%C3%A9gimes+de+temp%C3%A9ratures+ont+%C3%A9t%C3%A9+choisis%2C+le+r%C3%A9gime+m%C3%A9sophile+%2835%26nbsp%3B%C2%B0C%29+et+le+r%C3%A9gime+thermophile+%2855%26nbsp%3B%C2%B0C%29.+Le+choix+d%E2%80%99un+pH+neutre%2C+est+une+valeur+optimale+indiquant+la+stabilit%C3%A9+et+le+bon+d%C3%A9roulement+de+la+digestion+ana%C3%A9robie.+Ainsi+qu%E2%80%99un+suivi+des+param%C3%A8tres+du+processus+de+compostage.+Les+r%C3%A9sultats+du+compostage%2C+montrent+que+les+valeurs+de+la+temp%C3%A9rature+%2835%26nbsp%3B%C2%B0C+%C3%A0+62%26nbsp%3B%C2%B0C%29%2C+du+pH+%285+%C3%A0+8%29%2C+le+taux+d%E2%80%99humidit%C3%A9+%2860%26nbsp%3B%25+et+40%26nbsp%3B%25%29+et+le+pourcentage+de+la+mati%C3%A8re+organique+%2874%26nbsp%3B%25+%C3%A0+41%26nbsp%3B%25%29+montrent+le+bon+d%C3%A9roulement+de+la+fermentation.+Le+compostage+rentre+en+phase+de+refroidissement+au+bout+du+60%C3%A8me+jour+de+fermentation.+Alors%2C+que+les+r%C3%A9sultats+de+la+m%C3%A9thanisation+montrent+qu%E2%80%99un+substrat+dont%2C+le+taux+en+mati%C3%A8re+organique+de+73%26nbsp%3B%25+provoque+une+accumulation+d%E2%80%99acides+dans+le+digesteur+et+un+arr%C3%AAt+de+la+r%C3%A9action+dans+des+conditions+m%C3%A9sophiles.+Donc%2C+le+mode+thermophile+est+plus+appropri%C3%A9+pour+la+d%C3%A9gradation+ana%C3%A9robie+des+biod%C3%A9chets+bruts.+Les+tests+%C3%A9taient+concluants+par+l%E2%80%99obtention+d%E2%80%99un+biogaz+inflammable.+Les+valeurs+des+rapports+AGV%2FTAC+inf%C3%A9rieur+%C3%A0+0%2C1+montrent+le+bon+fonctionnement+de+la+m%C3%A9thanisation.+Le+m%C3%A9thanisation+de+deux+masses+du+substrat+au+d%C3%A9but+et+au+cours+de+la+phase+de+refroidissement+du+compostage+permet+un%26nbsp%3Bgain+de+temps+de+s%C3%A9jour%2C+donc+un+co%C3%BBt+moindre+en+%C3%A9nergie.">A Chlef, la&amp;nbsp;gestion des bio-déchets solides urbains se limite à « tout à la décharge contrôlée ou sauvage». Ces bio-déchets peuvent être traités par compostage-méthanisation. Dans cette optique, deux régimes de températures ont été choisis, le régime mésophile (35&amp;nbsp;°C) et le régime thermophile (55&amp;nbsp;°C). Le choix d’un pH neutre, est une valeur optimale indiquant la stabilité et le bon déroulement de la digestion anaérobie. Ainsi qu’un suivi des paramètres du processus de compostage. Les résultats du compostage, montrent que les valeurs de la température (35&amp;nbsp;°C à 62&amp;nbsp;°C), du pH (5 à 8), le taux d’humidité (60&amp;nbsp;% et 40&amp;nbsp;%) et le pourcentage de la matière organique (74&amp;nbsp;% à 41&amp;nbsp;%) montrent le bon déroulement de la fermentation. Le compostage rentre en phase de refroidissement au bout du 60ème jour de fermentation. Alors, que les résultats de la méthanisation montrent qu’un substrat dont, le taux en matière organique de 73&amp;nbsp;% provoque une accumulation d’acides dans le digesteur et un arrêt de la réaction dans des conditions mésophiles. Donc, le mode thermophile est plus approprié pour la dégradation anaérobie des biodéchets bruts. Les tests étaient concluants par l’obtention d’un biogaz inflammable. Les valeurs des rapports AGV/TAC inférieur à 0,1 montrent le bon fonctionnement de la méthanisation. Le méthanisation de deux masses du substrat au début et au cours de la phase de refroidissement du compostage permet un&amp;nbsp;gain de temps de séjour, donc un coût moindre en énergie.</a>]]></dcterms:description>
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    <dcterms:date><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=40&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=2023-07-06">2023-07-06</a>]]></dcterms:date>
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    <dcterms:title><![CDATA[<script>
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				var str = 'Elaboration and characterization of a composite material based on unsaturated polyester resin (UPR) reinforced with perlite';
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    <dcterms:title><![CDATA[<script>
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				var str = 'Elaboration et caractérisation d’un matériau composite à base de résine polyester insaturée (UPR) renforcé avec la perlite';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=The+main+objective+of+this+work+is+the+study+of+the+effect+of+the+incorporation+of+a+mineral+charge%2C+perlite%2C+in+a+thermosetting+matrix+based+on+an+unsaturated+polyester+resin%2C+of+the+isophthalic+resin+type%2C+on+the+mechanical%2C+physical+and+morphological+properties+of+composite+materials+containing+various+rates+of+minerals%2C+having+different+dimensions%2C+in+particular+higher+than+50+%C2%B5m+and+lower+than+50+%C2%B5m%2C+treated+and+not+treated.+The+composites+were+prepared+by+the+contact+molding+process.+The+study+of+the+mechanical+properties%2C+carried+out+by+determining+the+stress+at+break+and+strain+at+break%2C+impact+resistance+and+fracture+resistance%2C+showed+that+these+properties+increase+up+to+4%26nbsp%3B%25+due+to+the+strong+affinity+between+the+two+components+and+the+good+dispersion+of+the+filler%3B+then%2C+decrease+when+the+content+of+the+filler+increases+which+does+not+allow+an+adequate+dispersion+and+creates+agglomerations+that+initiate+the+break.+A+good+correlation+was+observed+between+the+results+of+the+mechanical+tests+and+the+SEM+observations%2C+which+reveal+that+for+lower+concentrations%2C+the+perlite+particles+are+well+dispersed+in+the+resin%2C+but+also+the+evidence+of+agglomerations+when+the+filler+content+increases">The main objective of this work is the study of the effect of the incorporation of a mineral charge, perlite, in a thermosetting matrix based on an unsaturated polyester resin, of the isophthalic resin type, on the mechanical, physical and morphological properties of composite materials containing various rates of minerals, having different dimensions, in particular higher than 50 µm and lower than 50 µm, treated and not treated. The composites were prepared by the contact molding process. The study of the mechanical properties, carried out by determining the stress at break and strain at break, impact resistance and fracture resistance, showed that these properties increase up to 4&amp;nbsp;% due to the strong affinity between the two components and the good dispersion of the filler; then, decrease when the content of the filler increases which does not allow an adequate dispersion and creates agglomerations that initiate the break. A good correlation was observed between the results of the mechanical tests and the SEM observations, which reveal that for lower concentrations, the perlite particles are well dispersed in the resin, but also the evidence of agglomerations when the filler content increases</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=L%E2%80%99objectif+principal+de+ce+travail+est+l%E2%80%99%C3%A9tude+de+l%E2%80%99effet+de+l%E2%80%99incorporation+d%E2%80%99une+charge+min%C3%A9rale%2C+la+perlite+dans+une+matrice+thermodurcissable+%C3%A0+base+d%E2%80%99une+r%C3%A9sine+polyester+insatur%C3%A9e%2C+de+type+r%C3%A9sine+isophtalique%2C+sur+les+propri%C3%A9t%C3%A9s+m%C3%A9caniques%2C+physique+et+%2C+morphologique%26nbsp%3B+des+mat%C3%A9riaux+composites+comportant+des+taux+vari%C3%A9s+de+minerais%2C+pr%C3%A9sentant+diff%C3%A9rentes+dimensions%2C+notamment+sup%C3%A9rieure+%C3%A0+50%C2%B5m%2C+et+inf%C3%A9rieure+%C3%A0+50%C2%B5m+trait%C3%A9+et+non+trait%C3%A9.+Les+composites+ont+%C3%A9t%C3%A9+pr%C3%A9par%C3%A9s+par+le+proc%C3%A9d%C3%A9+de+moulage+au+contact%26nbsp%3B%3B+Les+plaques+des%26nbsp%3B+composites+sont+durcies+pendant+24+h+%C3%A0+la+temp%C3%A9rature+ambiante+puis+mises+en+%C3%A9tuve+pendant+16+heures+%C3%A0+40%26nbsp%3B%C2%B0C+pour+subir+une+post-cuisson.+L%E2%80%99%C3%A9tude+de+propri%C3%A9t%C3%A9s+m%C3%A9caniques+r%C3%A9alis%C3%A9es+par+la+d%C3%A9termination+de+la+contrainte+%C3%A0+la+rupture+et+la+d%C3%A9formation+%C3%A0+la+rupture%2C+la+r%C3%A9sistance+%C3%A0+l%27impact%26nbsp%3B+et+la+r%C3%A9sistance+%C3%A0+la+rupture%26nbsp%3B+a+montr%C3%A9+que+ces+propri%C3%A9t%C3%A9s+augmentent+jusqu%27%C3%A0+4%25+en+raison+de+la+forte+affinit%C3%A9+entre+les+deux+composants+et+de+la+bonne+dispersion+de+la+charge.+Apr%C3%A8s%2C+ils+diminuent+lorsque+la+teneur+de+la+charge+augmente+et+cela+ne+permettent+pas+une+dispersion+ad%C3%A9quate+et+cr%C3%A9e+des+agglom%C3%A9rations%26nbsp%3B+qui+initient+la+rupture.+Une+bonne+corr%C3%A9lation+a+%C3%A9t%C3%A9+observ%C3%A9e+entre+les+r%C3%A9sultats+des+essais%26nbsp%3B+m%C3%A9caniques%26nbsp%3B+et+les+observations+au+MEB+qui+a+r%C3%A9v%C3%A9l%C3%A9+que+pour+des+concentrations+plus+faibles%2C+les+particules+de+la+perlite+sont+bien+dispers%C3%A9s+dans+la+r%C3%A9sine%2C+mais+les+agglom%C3%A9rations+sont+mises+en+%C3%A9vidence+lorsque+la+teneur+en+charge+augmente.">L’objectif principal de ce travail est l’étude de l’effet de l’incorporation d’une charge minérale, la perlite dans une matrice thermodurcissable à base d’une résine polyester insaturée, de type résine isophtalique, sur les propriétés mécaniques, physique et , morphologique&amp;nbsp; des matériaux composites comportant des taux variés de minerais, présentant différentes dimensions, notamment supérieure à 50µm, et inférieure à 50µm traité et non traité. Les composites ont été préparés par le procédé de moulage au contact&amp;nbsp;; Les plaques des&amp;nbsp; composites sont durcies pendant 24 h à la température ambiante puis mises en étuve pendant 16 heures à 40&amp;nbsp;°C pour subir une post-cuisson. L’étude de propriétés mécaniques réalisées par la détermination de la contrainte à la rupture et la déformation à la rupture, la résistance à l&#039;impact&amp;nbsp; et la résistance à la rupture&amp;nbsp; a montré que ces propriétés augmentent jusqu&#039;à 4% en raison de la forte affinité entre les deux composants et de la bonne dispersion de la charge. Après, ils diminuent lorsque la teneur de la charge augmente et cela ne permettent pas une dispersion adéquate et crée des agglomérations&amp;nbsp; qui initient la rupture. Une bonne corrélation a été observée entre les résultats des essais&amp;nbsp; mécaniques&amp;nbsp; et les observations au MEB qui a révélé que pour des concentrations plus faibles, les particules de la perlite sont bien dispersés dans la résine, mais les agglomérations sont mises en évidence lorsque la teneur en charge augmente.</a>]]></dcterms:description>
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    <dcterms:date><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=40&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=2023-07-06">2023-07-06</a>]]></dcterms:date>
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    <dcterms:identifier><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=43&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=https%3A%2F%2Fjournals.univ-chlef.dz%2Findex.php%2Fnatec%2Farticle%2Fview%2F151">https://journals.univ-chlef.dz/index.php/natec/article/view/151</a>]]></dcterms:identifier>
</rdf:Description><rdf:Description rdf:about="http://www.ajpsdz.org/dx/items/show/8461">
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				var str = 'Use of waste tires to produce mortars';
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				var str = 'Utilisation de déchet de pneus dans la confection des mortiers';
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    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=The+recycling+of+some+of+the+waste+is+an+important+issue+and+very+necessary+to+protect+the+environment+and+provide+new+sources+of+supply+of+raw+materials.+In+this+experimental+research%2C+a+solution+is+suggested+to+recover+the+bulky+waste%2C+like+the+waste+tire%2C+in+the+form+of+aggregates+used+in+the+concrete+industry.+The+work+performed+consists+in+incorporating+used+tires+as+aggregates+by+partial+replacement+of+the+sand+in+the+preparation+of+sample+mortars+using+different+percentages+of+substitutions+in+volume+varying+from+0%25+to+50%25.+Physico-mechanical+tests+were+carried+out+on+the+mortar+mixes.+The+results+obtained+show+that+the+use+of+waste+tires+as+aggregates+in+the+production+of+mortars+can+solve+several+problems+related+to+their+disposal+and+save+natural+resources+related+to+the+extraction+of+aggregates.+Also%2C+the+results+found+show+that+the+waste+tires+can+be+used+to+produce+mortars+employed+for+structural+and+non-structural+applications.">The recycling of some of the waste is an important issue and very necessary to protect the environment and provide new sources of supply of raw materials. In this experimental research, a solution is suggested to recover the bulky waste, like the waste tire, in the form of aggregates used in the concrete industry. The work performed consists in incorporating used tires as aggregates by partial replacement of the sand in the preparation of sample mortars using different percentages of substitutions in volume varying from 0% to 50%. Physico-mechanical tests were carried out on the mortar mixes. The results obtained show that the use of waste tires as aggregates in the production of mortars can solve several problems related to their disposal and save natural resources related to the extraction of aggregates. Also, the results found show that the waste tires can be used to produce mortars employed for structural and non-structural applications.</a>]]></dcterms:description>
    <dcterms:description><![CDATA[<a href="/dx/items/browse?advanced%5B0%5D%5Belement_id%5D=41&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=Le+recyclage+de+certains+d%C3%A9chets+est+une+question+importante+et+tr%C3%A8s+n%C3%A9cessaire+pour+pr%C3%A9server+l%27environnement+et+garantir+de+nouvelles+sources+d%27approvisionnement+en+mati%C3%A8res+premi%C3%A8res.+Dans+cette+recherche+exp%C3%A9rimentale%2C+une+solution+est+propos%C3%A9e+pour+r%C3%A9cup%C3%A9rer+les+d%C3%A9chets+encombrants%2C+comme+les+d%C3%A9chets+de+pneus%2C+sous+forme+de+granulats+dans+l%27industrie+du+b%C3%A9ton.+Le+travail+r%C3%A9alis%C3%A9+consiste+%C3%A0+int%C3%A9grer+les+pneus+usag%C3%A9s+comme+granulats+par+remplacement+partiel+du+sable+dans+la+confection+d%E2%80%99un+m%C3%A9lange+de+mortier+suivant+des+pourcentages+de+substitutions+en+volume+variant+de+0%26nbsp%3B%25+%C3%A0+50%26nbsp%3B%25.+Des+essais+de+caract%C3%A9risation+physico-m%C3%A9caniques+ont+%C3%A9t%C3%A9+effectu%C3%A9s+sur+des+%C3%A9prouvettes+de+mortier+de+dimension+4%C3%974%C3%9716+cm3.+Les+r%C3%A9sultats+obtenus+montrent+que+l%27utilisation+de+d%C3%A9chet+de+pneus+comme+granulats+dans+la+confection+du+mortier+peut+r%C3%A9soudre+beaucoup+de+probl%C3%A8mes+li%C3%A9s+%C3%A0+leur+%C3%A9limination+et+%C3%A9conomiser+les+ressources+naturelles+li%C3%A9es+%C3%A0+l%27extraction+des+granulats.+Aussi%2C+les+r%C3%A9sultats+trouv%C3%A9s+montrent+qu%E2%80%99il+est+possible+d%E2%80%99utiliser+les+d%C3%A9chets+de+pneus+dans+la+fabrication+de+mortiers+destin%C3%A9s+pour+des+applications+structurelles+et+non+structurelles.">Le recyclage de certains déchets est une question importante et très nécessaire pour préserver l&#039;environnement et garantir de nouvelles sources d&#039;approvisionnement en matières premières. Dans cette recherche expérimentale, une solution est proposée pour récupérer les déchets encombrants, comme les déchets de pneus, sous forme de granulats dans l&#039;industrie du béton. Le travail réalisé consiste à intégrer les pneus usagés comme granulats par remplacement partiel du sable dans la confection d’un mélange de mortier suivant des pourcentages de substitutions en volume variant de 0&amp;nbsp;% à 50&amp;nbsp;%. Des essais de caractérisation physico-mécaniques ont été effectués sur des éprouvettes de mortier de dimension 4×4×16 cm3. Les résultats obtenus montrent que l&#039;utilisation de déchet de pneus comme granulats dans la confection du mortier peut résoudre beaucoup de problèmes liés à leur élimination et économiser les ressources naturelles liées à l&#039;extraction des granulats. Aussi, les résultats trouvés montrent qu’il est possible d’utiliser les déchets de pneus dans la fabrication de mortiers destinés pour des applications structurelles et non structurelles.</a>]]></dcterms:description>
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