Abubeker yimam (18 risultati)

Condizione: New.

Paperback. Condizione: Brand New. 100 pages. 8.66x5.91x0.23 inches. In Stock.

Condizione: Sehr gut. Zustand: Sehr gut | Sprache: Englisch | Produktart: Bücher | The book is focused on the findings of the research work how it is attempted to improve the quality of lower grade sheep skins in to better quality which can be sold at reasonable price. The techniques or methods involved is technology up gradation and optimization of the process. In leather processing industries a lot of sheep skins are thrown into garbage due to quality problems,hence much amount of resource is wasted without utilizing it wisely. So, in this research work this resource which is damped as a wast is tried to improve its end products which could result better utilization of resource by increasing organizational profitability.For improving lower grade sheep skins a certain leather processing techniques in wet-finishing and finishing processes are modified and different specialty chemicals are incorporated and applied.For this experiment and control processes were conducted and the final outcome is compared with the conventional process which is here considered as a control process.…

paperback. Condizione: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Condizione: New.

Condizione: New.

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Osman MustefaMustefa Osman has Bsc in chemical engineering, Msc in process Engineering, lecturer in Adama science and technology university in chemical engineering department since 2015.The main aim of the study was to determine .…

Condizione: New. Print on Demand.

Kartoniert / Broschiert. Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Wolde Zegeye WondimuWondimu Wolde - Addis Ababa University, Addis Ababa Institute of Technology (AAiT), School of Chemical and Bio-Engineering.The book is focused on the findings of the research work how it is attempted to improv.…

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Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - The main aim of the study was to determine the optimum operating condition for the extraction of oil from mango seed kernel. For this, particle size, solvent type and extraction time with three levels for each factor were considered for optimization. A general factorial design was applied to investigate the effect of process variables on oil yield. Maximum oil yield of 84.81% was obtained for particle size range of 0.25mm - 0.5mm at extraction time of 6 hr and with solvent type hexane. Minimum oil yield of 18.88% was obtained for particle size range 1.5mm - 3mm at extraction time of 2 hr and with solvent type ethanol. ANOVA analysis was showed significant effect of the considered factors on oil yield (P value 0.05). The physicochemical properties of the oil extracted under optimum condition were determined and compared to those of the commercial available mango kernel oil. It was found that the properties are within the standard except the acid value which is slightly higher. The result also indicated that there is a presence of high unsaponefiable matter (3.85%) and phenolic content (115mg/g) in the mango kernel oil which makes the oil suitable for cosmetics application.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. &Uumlber den AutorrnrnWondimu Wolde - Addis Ababa University, Addis Ababa Institute of Technology (AAiT), School of Chemical and Bio-Engineering.KlappentextrnrnEl libro se centra en las conclusiones del trabajo de investigac.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - El libro se centra en las conclusiones del trabajo de investigación sobre cómo se intenta mejorar la calidad de las pieles de oveja de menor calidad para que puedan venderse a un precio razonable. Las técnicas o métodos implicados son la mejora tecnológica y la optimización del proceso. En las industrias de procesamiento del cuero, muchas pieles de oveja se tiran a la basura debido a problemas de calidad, por lo que se desperdicia una gran cantidad de recursos sin utilizarlos de forma inteligente. Para mejorar las pieles de oveja de menor calidad, se modifican ciertas técnicas de procesamiento del cuero en los procesos de acabado en húmedo y de acabado y se incorporan y aplican diferentes productos químicos especiales.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Le livre se concentre sur les résultats du travail de recherche et sur la façon dont on tente d'améliorer la qualité des peaux de mouton de qualité inférieure pour en faire des peaux de meilleure qualité qui peuvent être vendues à un prix raisonnable. Les techniques ou méthodes impliquées sont la mise à niveau technologique et l'optimisation du processus. Dans les industries de transformation du cuir, de nombreuses peaux de mouton sont jetées à la poubelle en raison de problèmes de qualité, d'où le gaspillage d'une grande quantité de ressources sans utilisation judicieuse. Pour améliorer les peaux de mouton de qualité inférieure, certaines techniques de traitement du cuir dans les processus de finition humide et de finition sont modifiées et différents produits chimiques spécialisés sont incorporés et appliqués. Pour cette expérience et les processus de contrôle ont été menés et le résultat final est comparé au processus conventionnel qui est ici considéré comme un processus de contrôle.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. &Uumlber den AutorrnrnWondimu Wolde - Addis Ababa University, Addis Ababa Institute of Technology (AAiT), School of Chemical and Bio-Engineering.KlappentextrnrnIl libro si concentra sui risultati del lavoro di ricerca su com.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Das Buch konzentriert sich auf die Ergebnisse der Forschungsarbeit, wie versucht wird, die Qualitaet von minderwertigen Schafsfellen in eine bessere Qualitaet zu verbessern, die zu einem angemessenen Preis verkauft werden kann. Die Techniken oder Methoden, di.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Il libro si concentra sui risultati del lavoro di ricerca su come si cerca di migliorare la qualità delle pelli di pecora di grado inferiore in una qualità migliore che può essere venduta a un prezzo ragionevole. Le tecniche o i metodi coinvolti sono l'aggiornamento della tecnologia e l'ottimizzazione del processo. Nelle industrie di lavorazione della pelle, molte pelli di pecora vengono gettate nella spazzatura a causa di problemi di qualità, quindi una grande quantità di risorse viene sprecata senza utilizzarla saggiamente. Per migliorare le pelli di pecora di grado inferiore, alcune tecniche di lavorazione della pelle nei processi di finitura e di finitura a umido sono modificate e diverse specialità chimiche sono incorporate e applicate.…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - O livro está centrado nos resultados do trabalho de investigação sobre como se tenta melhorar a qualidade das peles de ovinos de qualidade inferior para uma melhor qualidade que possa ser vendida a preço razoável. As técnicas ou métodos envolvidos são a tecnologia de gradação e a optimização do processo. Nas indústrias de processamento de couro, muitas peles de ovinos são atiradas para o lixo devido a problemas de qualidade, pelo que muitos recursos são desperdiçados sem que sejam utilizados de forma sensata. Assim, neste trabalho de investigação, este recurso que é humedecido como resíduo é tentado melhorar os seus produtos finais, o que poderia resultar numa melhor utilização do recurso, aumentando a rentabilidade organizacional.Para melhorar as peles de ovinos de qualidade inferior, são modificadas determinadas técnicas de processamento de couro em processos de acabamento e acabamento por via húmida e são incorporadas e aplicadas diferentes especialidades químicas.Para esta experiência e processos de controlo foram conduzidos e o resultado final é comparado com o processo convencional que aqui é considerado como um processo de controlo.…