RI-UNPHU es el repositorio institucional de la Universidad Nacional Pedro Henríquez Ureña. Tiene como propósito reunir, preservar y difundir la producción académica, intelectual y científica generada por la comunidad de nuestra Alta Casa de Estudios. Sus contenidos están organizados en Comunidades y Colecciones que abarcan todo tipo de recursos de información digitales como: libros y revistas editadas por la Universidad, materiales docentes, tesis y trabajos de grado, recursos de aprendizaje, comunicaciones a congresos, actividades y eventos realizados, así como otros documentos relevantes de la historia institucional y su acontecer.

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Ediciones UNPHU
  • Extraction of vanadium from petroleum coke samples by means of microwave wet acid digestion 

    Alvarado, José; Alvarez, Moisés; Cristiano, Ana Rita; Marcó, L. M. (Fuel, 1990)
    Certified coal standards and Venezuelan petroleum coke samples were submitted to microwave acid digestion to evaluate the convenience of this procedure for the extraction of their vanadium content. The solution and the ...
  • Hydroxyphenylpropan-7,8-diols and derivatives from Narvalina domingensis 

    Balboul, Basma A. A. A.; Ahmed, A. A.; Otsuka, H.; Adams, A. de, (Phytochemistry, 1996)
    Investigat ion of a Haitian medicinal plant, Narvalina domingensis, afforded, erythro- and threo-4-hydroxyphenylpropan-7,8-diol and their 7-O- methyl ether, 7-O-ethyl ethers and 4-O-isovaleric acid esters. The structures ...
  • Radioisotope X-ray fluorescence analysis of vanadium in petroleum coke samples 

    Alvarez, M.; Alvarado, J.; Cristiano, A. R.; Marcó, L. M.; Pérez, M. M. (Journal of Radioanalytical and Nuclear Chemistry Letters, 1990)
    Radioisot ope X-ray fluorescence spectrometry, RIXRF, was used for the determination of vanadium in Venezuelan petroleum coke samples using a simple standardless method and fundamental parameter approach. The values ...
  • Epidemiology of needlesticks and other sharps injuries and injection safety practices in the Dominican Republic 

    Moro, Pedro L.; Moore, Arelis; Balcacer, Patricia; Montero, Alex; Díaz, Delissa; Gómez, Virgen; Gabic, Zacarias; Weniger, Bruce G. (American Journal of Infection Control, 2007)
    Contaminated sharps, such as needles, lancets, scalpels, broken glass, specimen tubes, and other instruments, can transmit bloodborne pathogens such as HIV, hepatitis B (HBV), and hepatitis C viruses (HCV). Methods: ...
  • Trace element determination of mercury by total-reflection X-ray fluorescence 

    Greaves, E. D.; Alfonso Sosa, J.; Sajo Bohus, L.; Alvarez, M.; Wobrauschek, P.; Streli, Ch. (Spectrochimica Acta - Part B Atomic Spectroscopy, 1997)
    A rapid an d simple method is presented for the determination of trace amounts of ionic mercury in solutions by total-reflection Xray fluorescence. The method relies on the formation of a mercury amalgam on a 50 nm thick ...

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