Acremonium chrysogenum es un hongo filamentoso productor de cefalosporina C (CPC), un antibiótico beta-lactámico de amplio espectro y baja toxicidad que sirve de base para la síntesis química de todas las cefalosporinas de uso clínico. Estas características hacen de la CPC un producto de alto valor agregado. Actualmente, A. chrysogenum...
Introduction: The nuclear enzyme poly (ADP-ribose) polymerase-1 (PARP-1) is essential for the repair of single-strand breaks in DNA by means of base excision repair and represents an important target in the therapy cancer. Inhibitors of PARP-1 have been shown to potentiate the cytotoxic effects of ionizing radiation and chemotherapeutic agents...
The thesis explores the acquired combated and hidden cultural dimensions through its historical background and foundation of the Popular University in Chontalpa Cardenas, Tab. (UPCh), and from the theory of organizational culture emphasizes the importance of these dimensions and their influence in organizations. Its conceptual foundations are therefore: Identify cultural...
This thesis presents a treatment train primary sludge mixtures (LP) and secondary sludge (LS) in glass tube reactors upflow jacket design volume 10 L and working volume of 8.6 L was studied in two stages. The first hydrolysis-acidogenesis is operated in mesofília (35±3⁰C) without pre concentrate sludge in order to...
Currently, there is a growing interest in sustainable polymers particularly in basic applications such as packaging, edible films and coatings which biodegrade under controlled conditions of storage in order to alleviate the growing global synthetic materials waste problem. In this regard, the chitosan and its derivatives have demonstrated great potential...
En el presente trabajo de investigación se prepararon soportes de -Al₂O₃-TiO₂, a diferentes concentraciones de TiO₂ (5, 10 y 20 % en peso), por el método de peptización de Bohemita. Posteriormente fueron preparados catalizadores en los cuales se impregno Pt a estos materiales por el método de impregnación vía húmeda...
El objetivo de este trabajo es el crecimiento volumétrico de células de músculo esquelético y motoneuronas primarias de ratón, sobre camas de fibras electrohiladas recubiertas con Poli-Pirrol por Plasma (PPy). Se realizaron diferentes técnicas para la obtención de células musculares y de motoneuronas de ratón. Las células de músculo esquelético...
This thesis describes the synthesis of chemicals suitable for using as ionophores in polymeric membranes for ion-selective electrodes for mercury (II). The synthesis is based on the introduction of an alkyl linear group into the compound O, O’- (2,2’-biphenylene) dithiophosphate potassium (arrow compound). Thus the synthesis the series of five...
