548 research outputs found
Composite materials: Tomorrow for the day after tomorrow
A description is given of the history of the use of composite materials in the aerospace industry. Research programs underway to obtain exact data on the behavior of composite materials over time are discussed. It is concluded that metal composites have not yet replaced metals, but that that this may be a future possibility
Identifying Critical Factors in Managing University Technology Transfer and Commercialization Units
Given the increasing interest worldwide in the growth of new technology-based companies, the aim of the present paper is to contribute to the future design of patent commercialization and spin-off creation units on behalf of university authorities and national or regional innovation agencies. Our analysis was based on 52 public technology transfer units. Six unit typologies were identified in the analysis. From the results, the proposed recommendations are focused on some critical factors such as a university’s research mass, specialized personnel of the technology transfer units, their profile, expertise and cost, as well as ideas collected from some experts in the field.university; Science Park; technology transfer; commercialization; spin-off.
Identification and characterization of beneficial microorganisms associated with chickpea (Cicer arietinum L.) for increased productivity and drought tolerance
In view of the impact of water scarcity on productivity, it is important to provide plants with tools that make them more tolerant. Such development can be attained by exploiting beneficial microorganisms for increased productivity and resilience under climate conditions. Furthermore, the economic and environmental constrains of mineral fertilizers actively encourage alternative sources which are environment-friendly, cost effective and ensure the demands and constrains of producers and consumers. Therefore, the use of beneficial microorganisms as biofertilizers has become important in agri- culture sector because of their potential role in food safety and sustainable production. Among soil microorganisms, PGPR, including rhizobia, are promising substitutes of chemical fertilizers because of their biological mechanisms that improve plant performance and enhance the resistance to fungal pathogens and abiotic stress. Becoming conscious of this potential, requires an understanding of their role in crop production and the development of efficient inoculants available for farmers. The present study has the objective of identified the best inoculant of chickpea rizhosfera microorganism. This has been carried out with the following procedures: Trap culture collection of the bacterias, In-vitro assessment to prove that the bacterias are the same as the first isolation, molecular identification, and phylogenetic analysis of the sequences. The phylogenetic trees are quite clear but is difficult to extract conclusions with out further studies.En vista de l’impacte de l’escassetat d’aigua a la productivitat, Ă©s important proporcionar a les plantes eines que les facin mĂ©s tolerants. Aquest desenvolupament es pot aconseguir mitjan¸cant l’explotaciĂł de microorganismes beneficiosos per augmentar la productivitat i la resistència en condicions climĂ tiques. A mĂ©s, els problemes econòmics i ambientals dels fertilitzants minerals fomenten activament el desenvolupament d’alternatives que siguin amigables amb el medi ambient, rendibles i satisfacin les demandes dels productors i consumidors. Per tant, l’ús de microorganismes beneficiosos com a biofertilitzants s’ha tornat important en el sector de l’agricultura a causa del seu paper productiu i sostenible. Els microorganismes del sòl, Plant Growth Promoting Rhizobacteria (PGPR), inclosos els rizobios, sĂłn substituts prometedors dels fertilitzants quĂmics a causa dels seus mecanismes biològics que milloren el rendiment de la planta i augmenten la resistència als patògens fĂşngics i l’estrès abiòtic. Prendre consciència d’aquest potencial, requereix una comprensiĂł del seu paper en la producciĂł de cultius i el desenvolupament de inoculants eficients i disponibles per als agricultors. El present estudi tĂ© com a objectiu identificar el millor inoculant del la rizosfera del cigrĂł. Això s’ha dut a terme amb els segĂĽents procediments: Cultius trampa per a la recol·lecciĂł dels bacteris, AvaluaciĂł in vitro per provar que els bacteris sĂłn iguals al primer a¨ıllament, identificaciĂł molecular i anĂ lisi filogenètica de les seqüències. Els arbres filogenètics sĂłn prou clars, però Ă©s difĂcil extreure conclusions sense estudis addicionals.En vista del impacto de la escasez de agua en la productividad, es importante proporcionar a las plantas herramientas que las hagan más tolerantes. Este desarrollo puede lograrse mediante la explotaciĂłn de microorganismos beneficiosos para aumentar la productividad y la resistencia en condiciones climáticas. Además, los problemas econĂłmicos y ambientales de los fertilizantes minerales fomentan activamente el desarrollo de alternativas que son amigables con el medio ambiente, rentables y satisfaciendo las demandas de los productores y consumidores. Por lo tanto, el uso de microorganismos beneficiosos como biofertilizantes se ha vuelto importante en el sector de la agricultura debido a su papel productivo y sostenible.Los microorganismos del suelo, PGPR, incluidos los rizobios, son sustitutos prometedores de los fertilizantes quĂmicos debido a sus mecanismos biolĂłgicos que mejoran el rendimiento de la planta y aumentan la resistencia a los patĂłgenos fĂşngicos y al estrĂ©s abiĂłtico. Tomar conciencia de este potencial, requiere una comprensiĂłn de su papel en la producciĂłn de cultivos y el desarrollo de inoculantes eficientes disponibles para los agricultores. El presente estudio tiene como objetivo identificar al mejor inoculante del la rizosfera del garbanzo. Esto se ha llevado a cabo con los siguientes procedimientos: Cultivos trampa para la recolecciĂłn de las bacterias, EvaluaciĂłn in vitro para probar que las bacterias son iguales al primer aislamiento, identificaciĂłn molecular y análisis filogenĂ©tico de las secuencias. Los árboles filogenĂ©ticos son bastante claros, pero es difĂcil extraer conclusiones sin estudios adicionales
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