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documento electrónico
VEIGA, NICOLAS ; RIVERO HUGUET, MARIO E. ; HUERTAS, RAQUEL | 2008In the present work, a simple spectrofluorometric method for the determination of selenium in biological materials using microwave-assisted digestion was improved. The conditions of reduction of Se(VI) to Se(IV) and its complexation with DAN wer[...]
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Fueron exploradas las propiedades físicas de los kauris de 30000 años y actuales ( Agathis australis ). El ambiente de entierro ácido ha modificado la antigua estructura de la pared celular, afectando las propiedades de resistencia. La degradac[...]
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ARIZAGA, A., Autor ; DE LEON, D, Autor ; QUAGLIATA, EDUARDO, Autor ; GRGICH, JORGE, Autor |Dentro INNOTEC (No. 1, dic. 2006)Existe un número importante de construcciones que representan un enorme activo fijo, algunas de las cuales tienen además un incalculable valor patrimonial, donde se constatan distintos tipos de degradación, producto natural del tiempo o de la ac[...]
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Stress relaxation curves of many solids can be normalized and presented in the linear form of F(0)t/[F(0)–F(t)]=k1 + k2t, where F(t) is the decaying force and k1,k2 are constants. The reciprocal of k2 denotes the asymptotic value of the relaxed [...]
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TORRES GUZMAN, JORGE, Autor ; SANTO, CLAUDIA, Autor ; RAMIREZ-AHEDO, DANIEL, Autor ; VILLARROEL POBLETE, JUAN CH., Autor |Dentro INNOTEC (No. 1, dic. 2006)This force comparison was performed among IDIC (Chile), LATU (Uruguay) and CENAM (Mexico), national laboratories within the Interamerican Metrology System (SIM) region. Each laboratory used its national standard for the established measuring ran[...]
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GRIFFIN, ROGER C., Autor ; SACHAROW, STANLEY, Autor | Connecticut [ESTADOS UNIDOS] : The AVI Publishing Company, Inc | 1972
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Test materials for the Standard Microbiology Program were shipped to participants on April 17,2006. The participants were to submit an electronic response online to: verfy the condition of the test materials upon receipt: confirm the safe handli[...]
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Over the past decades, radiation processing has been used in many sectors of national economies. For example, sterilization, polymer cross-linking (tapes, tubes, cables, etc.), tyre belt vulcanization, and the irradiation of certain food items f[...]Serial check-in : texto impreso
TAPPI JOURNAL, VOL 76NRO 3 - mar.1993
1993El problema de los riesgos de los materiales orgánicos clorados ha dado lugar a la imposición de límites estrictos para la emisión de cloruros orgánicos totales (TOCl), haluros orgánicos adsorbibles (AOX), y dioxina en los efluentes de plantas[...]
