2 10 90 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource BELDJILALI, Said de AGUIAR, José Luís Barroso Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-30 Description An account of the resource Architectural ornaments, used as decorative elements, are made of stone; but most of their components contain gypsum. It is found that the deterioration of ornaments is attributed to water penetration, biological colonization, micro and macro cracking and partial and (or) complete detachment from their supports. Many rehabilitation operations of architectural ornaments have failed to use the appropriate material for the needs of the project. The use of construction waste, particularly used brick, is currently widespread for such operations. For an efficient and sustainable use of these materials, an experimental study was conducted to investigate the influence of the content of waste brick on the physical and mechanical properties of gypsum mortar. The main variables in this study being the waste brick content and the substrate type. The Water/Mortar  ratio of all mixes was kept constant to maintain a similar level of workability. Numerous tests were performed to evaluate the physical and mechanical behavior of the gypsum mortars, including bond test, X-ray and SEM analysis. The results obtained show that the bond strengths of the mortars are greater when the substrate is made of limestone compared to the substrate made of bricks. However, an excessive percentage of brick waste in the mortar can have negative effects and reduce the bond strength. Plaster mortars made with 75% waste brick should be recommended for the rehabilitation of architectural ornaments. Les ornements architecturaux, utilisés comme éléments décoratifs sont fabriqués en pierre ; mais la plupart de leurs composants contiennent du gypse. Il est constaté que la détérioration des ornements est attribuée à la pénétration de l'eau, à la colonisation biologique, à la micro et macro-fissuration et au détachement partiel et complet de leurs supports. De nombreuses opérations de réhabilitation des ornements architecturaux n'ont pas réussi à utiliser le matériau approprié pour les besoins du projet. L'utilisation des déchets de construction, en particulier la brique usagée, est actuellement largement répandue pour de tels opérations. Pour une utilisation efficace et durable de ces matériaux, une étude expérimentale a été menée pour examiner l'influence du contenu des déchets de briques sur les propriétés physiques et mécaniques du mortier de plâtre. Les principales variables de cette étude étant la teneur en briques usagées et le type de substrat. Le rapport Eau/Mortier de tous les mélanges a été maintenu constant afin de conserver un niveau d'ouvrabilité similaire. De nombreux tests ont été effectués pour évaluer le comportement physique et mécanique des mortiers de plâtre, y compris le test d'adhérence, la radiographie et l'analyse MEB. Les résultats obtenus montrent que les forces d'adhérence des mortiers sont plus importantes lorsque le substrat est fait de calcaire par rapport au substrat fait de briques. Cependant, un pourcentage excessif de déchets de briques dans le mortier peut avoir des effets négatifs et réduire la force d'adhésion. Les mortiers de plâtre fabriqués avec 75  % de briques usagées doivent être recommandés pour la réhabilitation des ornements architecturaux. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/146 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/146/109 Rights Information about rights held in and over the resource Copyright (c) 2023 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 15 No. 01 (2023); 01-10 Revue Nature et Technologie; Vol. 15 No 01 (2023); 01-10 2437-0312 1112-9778 Title A name given to the resource Production of an eco-mortar devoted to the restoration of architectural ornaments Confection d’un éco-mortier dédié a la restauration des ornements architecturaux Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource ASSANG, Mèwèmenreré Denise ATAKPAMA, Wouyo AHOUANDJINOU, Enagnon Benoit Olivier DIMOBE, Kangbeni Gérard Nounagnon, GOUWAKINNOU AKPAGANA, Koffi Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-30 Description An account of the resource Understanding a species’ current and future potential habitat is crucial to design its policy for management and cultivation practices that are more resilient in the face of climate change. This study assessed the present-day distribution and predicted the potential effect of climate change on the distribution of Anacardium occidentale’s habitat in Togo under two Representative Concentration Pathways (RCP4.5 and RCP8.5) by 2055. Maximum Entropy algorithm, 2538 species occurrence records, and a combination of 23 climate- and soil-related variables were used. Soil, isothermality, temperature seasonality, and annual precipitation are the most significant environmental factors affecting the distribution of the species in Togo. Based on the current model, 54.45% of the Togolese landscape is favourable for cashew development, mainly in the plains of Guinean and Sudanese savannahs. Unfavourable areas (15.20%) are in the southern mountainous areas of Togo and coastal areas. An increase in favourable areas and a slight decrease in unfavourable and moderately favourable areas are predicted by 2055, considering the two scenarios. La compréhension de l'habitat potentiel actuel et futur d'une espèce est cruciale pour concevoir sa politique de gestion et des pratiques culturales plus résilientes face au changement climatique. Cette étude a évalué la distribution actuelle et prédit l'effet potentiel du changement climatique sur la distribution de l'habitat d'Anacardium occidentale au Togo sous deux trajectoires de concentration représentatives (RCP4.5 et RCP8.5) d'ici 2055. L'algorithme d'entropie maximale, 2538 enregistrements d'occurrence d'espèces et une combinaison de 23 variables liées au climat et au sol ont été utilisés. Le sol, l'isothermie, la saisonnalité de la température et les précipitations annuelles sont les facteurs environnementaux les plus significatifs affectant la distribution de l'espèce au Togo. Sur la base du modèle actuel, 54,45% du paysage togolais est favorable au développement de l'anacarde, principalement dans les plaines des savanes guinéennes et soudanaises. Les zones défavorables (15,20%) se situent dans les zones montagneuses du sud du Togo et dans les zones côtières. Une augmentation des zones favorables et une légère diminution des zones défavorables et modérément favorables sont prévues d'ici 2055, en considérant les deux scénarios. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/145 Language A language of the resource eng Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/145/108 Rights Information about rights held in and over the resource Copyright (c) 2023 Revue Nature et Technologie https://creativecommons.org/licenses/by/4.0 Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 15 No. 01 (2023) Revue Nature et Technologie; Vol. 15 No 01 (2023) 2437-0312 1112-9778 Subject The topic of the resource Fruit crops Climate change Habitats MaxEnt Togo Anacardium occidentale Cultures fruitières Changement climatique Habitats MaxEnt Togo Anacardium occidentale Title A name given to the resource Priority area for sustainable Cashew (Anacardium occidentale L.) growing in Togo: Economic implications and conservation areas Zone prioritaire pour la culture durable de l'anacardier (Anacardium occidentale L.) au Togo : Implications économiques et zones de conservation Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource FITOUHI, Nahla GMAR, Mouna SBOUI, Nesma DEBBABI, Hajer Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource Destabilization of ultra-high temperature (UHT) milk (140 °C, 4s) in the form of gel or sediment may occur during storage. Thisphenomenon is a real industrial and scientific problem that could be caused by milk proteolysis and lipolysis. This study aimed to study the influence of storage conditions (time, temperature) on the quality of UHT milk produced under industrial conditions. The physicochemical characteristics of these different kinds of milk, including composition and stability as assessed by phosphate test, were determined. UHT heat treatment of milk resulted in a change in pH, acidity, and stability derived from phosphate test, as well as in a drop in psychrophilic bacteria counts. Proteolytic and lipolysis activities also decreased with UHT treatment. However, during UHT milk storage for 6 months, the milk proteolytic activity increased, and in consequence, an increase in acidity and non-casein nitrogen values was observed. Moreover, lipolytic activity was higher in milk stored at 30 °C, as compared to the milk kept at 4 °C. In addition, the stability values increased during UHT milk storage at 30 °C. Stability was inversely correlated with milk fat and acidity (p<0.05). Furthermore, it showed a strong relationship with proteolysis (r=0.765), but no significant relationship was found with lipolysis. The analysis of the sediment of UHT milk stored for 6 months showed levels of fat (15 %), proteins (40 %) and lactose (42 %). The composition of the sediment illustrated the complexity of the formation process. La déstabilisation du lait à ultra-haute température (UHT) (140 °C, 4s) sous forme de gel ou de sédiment peut se produire pendant le stockage. Ce phénomène est un réel problème industriel et scientifique qui pourrait être causé par la protéolyse et la lipolyse du lait. Cette étude visait à étudier l'influence des conditions de stockage (temps, température) sur la qualité du lait UHT produit dans des conditions industrielles. Les caractéristiques physico-chimiques de ces différents types de lait, y compris la composition et la stabilité évaluée par le test du phosphate, ont été déterminées. Le traitement thermique UHT du lait a entraîné une modification du pH, de l'acidité et de la stabilité dérivée du test au phosphate, ainsi qu'une baisse du nombre de bactéries psychrophiles. Les activités protéolytiques et lipolytiques ont également diminué avec le traitement UHT. Cependant, pendant le stockage du lait UHT pendant 6 mois, l'activité protéolytique du lait a augmenté, et en conséquence, une augmentation des valeurs d'acidité et d'azote non caséine a été observée. De plus, l'activité lipolytique était plus élevée dans le lait conservé à 30 °C que dans le lait conservé à 4 °C. En outre, les valeurs de stabilité ont augmenté au cours du stockage du lait UHT à 30 °C. La stabilité était inversement corrélée à la matière grasse et à l'acidité du lait (p<0,05). En outre, elle a montré une forte relation avec la protéolyse (r=0,765), mais aucune relation significative n'a été trouvée avec la lipolyse. L'analyse du sédiment du lait UHT stocké pendant 6 mois a montré des niveaux de matières grasses (15 %), de protéines (40 %) et de lactose (42 %). La composition du sédiment illustre la complexité du processus de formation. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/142 Language A language of the resource eng Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/142/106 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 120-125 Revue Nature et Technologie; Vol. 10 No 01 (2018); 120-125 2437-0312 1112-9778 Subject The topic of the resource Ultra-high temperature (UHT) milk Storage conditions enzymatic activities UHT milk activité enzymatique Lait UHT (Ultra-High-Temperature) Conditions de stockage Lait UHT Title A name given to the resource Correlations between quality, enzymatic activities and storage stability of UHT milk in Tunisia Corrélations entre la qualité, les activités enzymatiques et la stabilité au stockage du lait UHT en Tunisie Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource LAGHA-BENAMROUCHE , Samira ADDAR, Lydia BOUDERHEM, Hassiba TANI, Saïda MADANI, Khodir Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource In this study we are interested in the recovery of some orange peel varieties from the region of Bejaia (Washington, Thomson, Double Fine, Portuguese, Jaffa, Sanguinelli and Bitter). Thus, we carried out a phytochemical study which enabled us to demonstrate the richness of the peel in bioactive compounds (terpenoids, sugars and mucilage). We also extract the essential oils from the fresh peel by steam distillation. The Jaffa variety is the richest in essential oils, with a yield of 1.48%. Thomson variety proved to be the lowest of essential oils with a yield of 0.39%. We tested radical scavenging activity of essential oils extracted from peels of the studied varieties. Double fine variety has the most interesting antioxidant activity (74.46%). The chromatographic analysis of Double fine essential oils by GC-MS identified ten components of which limonene is the major constituent (89.81%). Dans la présente étude nous nous sommes intéressées à la valorisation des écorces de quelques variétés d’oranges provenant de la région de Bejaia (Washington, Thomson, Double fine, Portugaise, Jaffa, Sanguinelli et Bigarade). De ce fait nous avons procédé à une étude phytochimique qui nous a permis de mettre en évidence la richesse des écorces en composés bioactifs (composés phénoliques, terpènoïdes, sucres et mucilages). Nous avons également extrait les huiles essentielles à partir des écorces fraiches par hydrodistillation. La variété Jaffa s’avère la plus riche en huiles essentielles, nous avons enregistré un rendement de l,48 %. La variété Thomson s’est avéré la plus pauvre en huiles essentielles avec un rendement de 0,39 %. La variété Double fine présente l’activité antioxydante la plus intéressante (74,46 %). L’analyse chromatographiques des huiles essentielles de Double fine par GC-MS a permis d’identifier dix composants dont le limonène est le constituant majoritaire (89,81 %). Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/141 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/141/105 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 112-115 Revue Nature et Technologie; Vol. 10 No 01 (2018); 112-115 2437-0312 1112-9778 Subject The topic of the resource Peel Orange Phytochemical screening Essentials oils Antioxidant activity GC-MS Orange peel Écorce Orange Screening phytochimique Huiles essentielles Activité antioxydante GCMS Ecorce d'orange Title A name given to the resource Chemical characterization of orange peels, identification by GC-MS and evaluation of the antioxidant power of their essential oils Caractérisation chimiques des écorces d’oranges, identification par GC-MS et évaluation du pouvoir antioxydant de leurs huiles essentielles Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource TOLBA, Hadjer MOGHRANI, Houria ABOUN, Assia MAACHI, Rachida Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource This study was carried out to assess the chemical composition, antioxidant and antimicrobial activities of Eucalyptus citriodoraessential oil growing in Algeria. The chemical composition of the oil was analyzed by GC and GC/MS and revealed the presence of 22 compounds which accounted for 97.13 % of the oil. The main compounds was Citronellal (69.77 %) followed by Citronellol (10.63 %) and Isopulegol (4.66 %). Antioxidant activity was evaluated by using 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. The free radical scavenging activity of the oil was found to be inferior (IC50 values = 0.896 mg/ml) as compared to butylatedhydreoxytoluene (BHT), (IC50 value = 0.041 mg/ml). The antimicrobial activity of Eucalyptus citriodora essential oil against twelve bacteria and two yeasts was determined via both the disc diffusion method and the Disc volatilization method. Higher antimicrobial activity was observed in the liquid phase. The minimum inhibitory concentration (MIC) was found to vary from 0.6 to 20 µl/ml for bacteria while for yeasts it was equal to 1.25 µl/ml. The most sensitive strains were the Gram positive bacteria Staphylococcus epidermidis and the two yeasts while the most resistant bacterium was Pseudonomas aeruginosa. This is the first report on the antioxidant and antimicrobial properties of the essential oil of Eucalyptus citriodora growing in Algeria. Cette étude a été réalisée pour évaluer la composition chimique, les activités antioxydantes et antimicrobiennes de l'huile essentielle d'Eucalyptus citriodora cultivée en Algérie. La composition chimique de l'huile a été analysée par GC et GC/MS et a révélé la présence de 22 composés qui représentaient 97,13 % de l'huile. Les principaux composés étaient le Citronellal (69,77 %) suivi du Citronellol (10,63 %) et de l'Isopulegol (4,66 %). L'activité antioxydante a été évaluée en utilisant le test 1,1-diphényl-2-picrylhydrazyl (DPPH). L'activité de piégeage des radicaux libres de l'huile s'est avérée inférieure (valeurs IC50 = 0,896 mg/ml) par rapport au butylhydrodésoxytoluène (BHT), (valeur IC50 = 0,041 mg/ml). L'activité antimicrobienne de l'huile essentielle d'Eucalyptus citriodora contre douze bactéries et deux levures a été déterminée par la méthode de diffusion en disque et la méthode de volatilisation en disque. Une activité antimicrobienne plus élevée a été observée dans la phase liquide. La concentration minimale inhibitrice (CMI) varie de 0,6 à 20 µl/ml pour les bactéries, tandis que pour les levures, elle est égale à 1,25 µl/ml. Les souches les plus sensibles étaient les bactéries Gram positives Staphylococcus epidermidis et les deux levures, tandis que la bactérie la plus résistante était Pseudonomas aeruginosa. Il s'agit du premier rapport sur les propriétés antioxydantes et antimicrobiennes de l'huile essentielle d'Eucalyptus citriodora cultivée en Algérie. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/140 Language A language of the resource eng Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/140/104 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 105-111 Revue Nature et Technologie; Vol. 10 No 01 (2018); 105-111 2437-0312 1112-9778 Subject The topic of the resource Antimicrobial activity Antioxidant activity Chemical composition Essential oil Eucalyptus citriodora Hook Eucalyptus Activité antimicrobienne Activité antioxydante Composition chimique Huile essentielle Eucalyptus citriodora Hook Eucalyptus Title A name given to the resource Essential oil of Algerian Eucalyptus citriodora: Chemical composition, antioxidant and antimicrobial activities Huile essentielle d'Eucalyptus citriodora d'Algérie : Composition chimique, activités antioxydantes et antimicrobiennes Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource BOUSSAADA, Tarek Derradji, OUACHEM Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource 512 one-day chicks male, of the Arbor Acres strain were weighed and distributed according to their initial body weight through four classes of 128 chicks (4 repetitions of 32 subjects per class): light chicks (l <40 g), medium chicks (M: 40 – 45 g), heavy chicks (L> 45 g), and witness chicks (T: weight mix). The four classes of animals had free access to food and water. The results show that the body weight of the batch of heavy chicks was statistically strongest at the age of 7 days (+ 8 %, P <0.01), 14 days (+ 7%, P <0.004) and 42 days (+ 3 %, P<0.001). The results of the feed consumption of the heavy and medium chicks were also marked by a significant improvement of this parameter at the age of 7 days (-6 %, P = 0.004) and 14 days (-4 % P = 0.03). On the other hand, chicken from light chicks showed lower performances, regardless of the stage of rearing or the parameter studied. 512 poussins mâles, de souche commerciale Arbor Acres ont été pesés et répartis en fonction de leur poids vif initial en quatre classes de 128 poussins (4 répétitions de 32 sujets par classe): poussins légers (l < 40g), poussins moyens (M: 40 – 45 g), poussins lourds (L > 45 g), et poussins Témoins (T: mélange de poids). Les animaux des quatre classes avaient accès libre à l’aliment et l’eau. Les résultats montrent que le poids vif réalisé par le lot de poussins lourds a été le plus performant statistiquement à l’âge de 7 jours (+8 %; P<0,01), de 14 jours (+7 %; P < 0,004) et 42 jours (+3 %; P<0,001). Les résultats de l’indice de consommation des lots de poussins lourds et moyens ont également été marqués par une amélioration significative de ce paramètre à l’âge de 7 jours (-6 %; P = 0,004) et de 14 jours (-4 %; P = 0,03). Par ailleurs, le poulet issu du lot des poussins légers a enregistré des performances de production inférieures, quels que soient la phase d’élevage ou le paramètre étudié. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/138 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/138/103 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 101-104 Revue Nature et Technologie; Vol. 10 No 01 (2018); 101-104 2437-0312 1112-9778 Subject The topic of the resource Body weightx Body weight One-day chicks Performance Broiler Broiler chicken Poids du poussin Performance de production Poulet de chair Poulet de chair Title A name given to the resource Effect of the weight of the one-day old chick on the zootechnical performances of broiler chickens Effet du poids du poussin d’un jour sur les performances zootechniques du poulet de chair Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource BENTAHAR, Djamila AMARA, Mahfoud BAKEL, Mouhamed Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource This work focuses on a comparative analysis of the effect of three cultivation techniques and direct seeding for the establishment of a fodder crops, on soil physical properties and the consequences on fodder sorghum growth and crop yield. To answer this problem, an analysis of the various parameters related to the soil (moisture and penetrometer resistance) and others related to the development of culture (the emergence-stand, tillering, the height and diameter of the stems, yields of green fodder and dry matter) has been done. As regards lifting-settlement the rates of lifting obtained are directly related to the technique used: the technique of the direct drilling seems to offer the best rate of lifting with 85 %; more the low level being realized with the technique of simplified work with only 67 %. As for the outputs, best are recorded with the technique of conventional work and are of 90.11 T/ha into green matter and 36.64 T/ha in dry matter for proportion 1 and 87, 22 T/ha into green matter and 33,83T/ha in ms for proportion 2. Most poor yield is recorded with the technique of the direct drilling and is respectively of 42, 11 T/ha into green matter and 11.23 T/ha in ms for proportion 1 and 87.22 T/ha into green matter and 33.83 T/ha in dry mater for proportion 2. In spite of a low level of loss to germination, approximately 15 %, the weakest output was obtained on the level of the direct seeding. Ce travail porte sur une analyse comparative de l’effet de trois techniques culturales et le semis direct, pour la mise en place d’uneculture fourragère, sur les propriétés physiques du sol et les conséquences sur le développement et le rendement de la culture du sorgho fourrager. Pour répondre à cette problématique, une analyse des différents paramètres liés au sol (Humidité et la résistance mécanique à la pénétration) et d’autres liés au développement de la culture (la levée-peuplement, le tallage, la hauteur et le diamètre des tiges, les rendements en fourrage vert et matière sèche) a été effectuée. En matière de levée-peuplement les taux de levée obtenus sont directement liés à la technique utilisée : la technique du semis direct semble offrir le meilleur taux de levée avec 85 %; le plus faible taux étant réalisé avec la technique du travail simplifié avec seulement 67 %. Quant aux rendements, les meilleurs sont enregistrés avec la technique du travail conventionnel et sont de 90,11 T/ha en MV et 36,64 T/ha en MS pour la dose 1 et 87,22 T/ha en MV et 33,83T/ha en MS pour la dose 2. Les plus faibles rendements sont enregistrés avec la technique du semis direct et sont respectivement de 42,11 T/ha en MV et 11,23 T/ha en MS pour la dose 1 et 87,22 T/ha en MV et 33,83 T/ha en MS pour la dose 2.Malgré un faible taux de perte à la germination, environ 15 %, le rendement le plus faible a été obtenu au niveau des parcelles du semis direct. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/136 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/136/102 Rights Information about rights held in and over the resource Copyright (c) 2018 Revue Nature et Technologie https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 93-100 Revue Nature et Technologie; Vol. 10 No 01 (2018); 93-100 2437-0312 1112-9778 Subject The topic of the resource Sorghum Farming techniques Physical and mechanical characteristics of the soil Direct drilling Dry Matter Green matter Yield Farming techniques Sorgho Techniques culturales Caractéristiques physicomécaniques du sol Semis direct Matière sèche Matière verte Rendement Techniques culturales Title A name given to the resource Comparative analysis between three cropping techniques and no-till for the establishment of forage sorghum in order to optimize its yield Analyse Comparative Entre Trois Techniques Culturales Et Le Semis Direct Pour La Mise En Place Du Sorgho Fourrager En Vue D’optimiser Son Rendement Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource JDAIDI, Nouri HASNAOUI, Brahim Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource The phenology of wild cherry in the Northwest of Tunisia was studied over the year 2013. The phenological events reserved are theleafing, the flowering and the fruiting. The observation of the various phenological phases of this species (bud burst, blossoming orfruiting) reveals a variation inter-site and intra-site. The precocity reveals for the sites of Tabarka (Hamdia and Kroufa) can give someexplanation of differences of edaphic and topographic characteristics. The analyses of variances show that the duration of the various phenological phases of the wild cherry is significantly connected with the geographical localization of sites. The differences observed within the same site can give some explanation by the genetic variability of trees. These results open perspectives for the valuation and the genetic preservation of this commercial species in the northeast of Tunisia. La phénologie de merisier au Nord-Ouest de la Tunisie a été étudiée sur l’année 2013. Les événements phénologiques retenus sont la feuillaison, la floraison et la fructification. L’observation des différentes phases phénologiques de cette espèce (débourrement, floraison ou fructification) révèle une variation inter-site et intra-site. La précocité révèle pour les sites de Tabarka (Hamdia et Kroufa) peut s’expliquer par des différences de caractéristiques édaphiques et topographiques. Les analyses de variances montrent que la durée des différentes phases phénologiques du merisier est liée significativement avec la localisation géographique des sites. Les différences observées au sein d’un même site peuvent s’expliquer par la variabilité génétique des arbres. Ces résultats ouvrent des perspectives pour la valorisation et la conservation génétique de cette espèce commerciale au nord-ouest de la Tunisie. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/135 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/135/101 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 87-92 Revue Nature et Technologie; Vol. 10 No 01 (2018); 87-92 2437-0312 1112-9778 Subject The topic of the resource Prunus avium Northwest of Tunisia Sites Phenology Prunus avium Prunus avium Nord-ouest de la Tunisie Sites Phénologie Prunus avium Title A name given to the resource Effect of the sites on the phenology of Prunus avium in Tunisia Effet des sites sur la phénologie de Prunus avium en Tunisie Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource HACHELLAF, kaddour MEDDAH, Hadj Miloud OUD CHIKH, El Bahri LOUNIS, Abdellah Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource The aim of our experimental work is to propose a tool model that could be used as a predictive tool to obtain a good welding of polymers like HDPE by the FSW technique or a linear welding of thin flat plates. A series of experimental tests concerning this type of welding (FSW) have been carried out with different types of tools depending on the optimal welding parameters such as feed speed, rotation speed, geometric shape of the tool, ... etc. Satisfactory results were obtained showing the influence of these parameters on the joint quality. Le but de notre travail expérimental est de proposer un modèle d’outil qui pourrait être utilisé comme un outil prédictif pour obtenirune bonne soudure des polymères comme le PEHD par la technique de soudage par friction malaxage FSW ou un soudage linéaire des plaques plates minces. Une série des essais expérimentaux concernant ce type de soudage (FSW) ont été réalisés avec différents type d'outils en fonction des paramètres optimaux de soudage tel que la vitesse d'avance, la vitesse de rotation, la forme géométrique d’outil, … etc. Des résultats satisfaisants ont été obtenus montrant l’influence de ces paramètres sur la qualité du joint. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/133 Language A language of the resource fra Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/133/100 Rights Information about rights held in and over the resource Copyright (c) 2018 Nature & Technology Journal https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 83-86 Revue Nature et Technologie; Vol. 10 No 01 (2018); 83-86 2437-0312 1112-9778 Subject The topic of the resource Polymers Tensile testing FSW FEM Coupling Process-property welding By FSW Polymères Essais de traction FSW FEM Couplage Procédé-propriété Soudure Par FSW Title A name given to the resource Characterization of a weld seam by FSW : Case of polymeric materials Caractérisation d’un cordon de soudure Par FSW : Cas des matériaux polymères Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource https://journals.univ-chlef.dz/index.php/natec/oai Dataset Data encoded in a defined structure. Examples include lists, tables, and databases. A dataset may be useful for direct machine processing. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource SAID LHADJ , Dihia BENZIDANE, Rachid SALAH, Boualem Date A point or period of time associated with an event in the lifecycle of the resource 2023-01-19 Description An account of the resource In the field of engineering the matrices reinforced by synthetic fibers have become widely used in view of the high specific stiffness and resistance they offer. The main objective of this work is to simulate and analyze the mechanical behavior of a multilayer composite pipe for different fiber orientation angle. A finite element numerical model (MEF) under ANSYS has been developed to determine the displacement fields for a multilayer pipe under internal pressure. Subsequently, a parametric study was carried out to enhance the effect of the mechanical and geometrical characteristics of the materials constituting the multi-layer pipe. From the results obtained, it was found that the displacement fields are clearly influenced by the orientations of the composite layers. Dans le domaine de l'ingénierie, les matrices renforcées par des fibres synthétiques sont devenues largement utilisées en raison de la rigidité et de la résistance spécifiques élevées qu'elles offrent. L'objectif principal de ce travail est de simuler et d'analyser le comportement mécanique d'un tuyau composite multicouche pour différents angles d'orientation des fibres. Un modèle numérique par éléments finis (MEF) sous ANSYS a été développé pour déterminer les champs de déplacement d'un tuyau multicouche sous pression interne. Par la suite, une étude paramétrique a été réalisée pour mettre en évidence l'effet des caractéristiques mécaniques et géométriques des matériaux constituant le tuyau multicouche. D'après les résultats obtenus, il a été constaté que les champs de déplacement sont clairement influencés par les orientations des couches composites. Identifier An unambiguous reference to the resource within a given context https://journals.univ-chlef.dz/index.php/natec/article/view/132 Language A language of the resource eng Publisher An entity responsible for making the resource available Hassiba Benbouali University of Chlef Relation A related resource https://journals.univ-chlef.dz/index.php/natec/article/view/132/99 Rights Information about rights held in and over the resource https://creativecommons.org/licenses/by/4.0/ Source A related resource from which the described resource is derived Revue Nature et Technologie; Vol. 10 No. 01 (2018); 77-82 Revue Nature et Technologie; Vol. 10 No 01 (2018); 77-82 2437-0312 1112-9778 Subject The topic of the resource Multilayer composite pipe MEF Internal pressure Constraint Layers Multilayer composite pipe Tuyau composite multicouche MEF Pression interne Contrainte Couches Tuyau composite multicouche Title A name given to the resource Influence of fiber orientation on the behavior of composite pipes subject to internal pressures Influence de l'orientation des fibres sur le comportement des tuyaux composites soumis à des pressions internes Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Peer-reviewed Article