Results 11 to 20 of about 625 (166)
Explorando trocas de calor com o simulador Calorimetria – SimuFísica®
Revista de Enseñanza de la FísicaEste artigo apresenta o simulador Calorimetria – SimuFísica®, uma ferramenta computacional interativa desenvolvida para o ensino de processos de troca de calor.
Marco P. M. de Souza +1 more
doaj +2 more sources
Bioscience Journal, 2015 Objetivou-se com este trabalho mensurar a respirometria e a emissão de metano entérico por ovinos alimentados com o capim-elefante cortado aos 56, 84 e 112 dias de crescimento. Foram utilizados 18 carneiros adultos sem raça definida, com peso médio de 34,
Alex de Matos Teixeira +6 more
doaj +3 more sources
Sildenafil–Resorcinol Cocrystal: XRPD Structure and DFT Calculations
Crystals, 2020 Herein, the X-ray powder diffraction (XRPD) crystal structure of a new Sildenafil cocrystal is reported, where resorcinol has been used as the coformer.
Rafael Barbas +4 more
doaj +1 more source
Journal of Chemistry, Volume 2015, Issue 1, 2015., 2015 Activated carbons from shell eucalyptus (Eucalyptus globulus) were prepared by chemical activation through impregnation with solutions of two activators: sulfuric acid and sodium hydroxide, the surface areas for activated carbons with base were 780 and 670 m2 g−1 and the solids activated with acid were 150 and 80 m2 g−1.
Nelson Giovanny Rincón-Silva +3 more
wiley +1 more source
Arquivos Brasileiros de Cardiologia, 2008 FUNDAMENTO: A resposta aguda da pressão arterial ao esforço tem sido utilizada como indicador de risco para o desenvolvimento de hipertensão arterial. Os fatores associados com essa resposta precisam ser esclarecidos a fim de se intervir na prevenção da ...
Luciana Carletti +3 more
doaj +1 more source
Calorimetric Study of Mesoporous SBA‐15 Modified for Controlled Valproic Acid Delivery
Journal of Chemistry, Volume 2013, Issue 1, 2013., 2013 SBA‐15 ordered mesoporous silica functionalized with (3‐aminopropyl)triethoxysilane (APTES) was used as the carrier for anticonvulsant drug 2‐propylpentanoic acid (valproic acid). The surface of SBA‐15 containing free silanol groups was modified with 3‐aminopropyltriethoxysilane via postsynthetic reaction.
Liliana Giraldo +2 more
wiley +1 more source
Acta Scientiarum: Biological Sciences, 2008 A conservação de amostras para a determinação dos valores calóricos em estudos de bioenergética de peixes tem se apresentado, na literatura, com uma variedade de métodos.
Evanilde Benedito-Cecilio +1 more
doaj +1 more source
Journal of Chemistry, Volume 9, Issue 2, Page 938-948, 2012., 2012 We obtain activated carbons with high portion of meso pores using coffee residues as precursor for the application of adsorption of large adsorbates. Because of its natural properties, the coffee residue exhibited a large pore size. In this work, the coffee residue were impregnated with ZnCl2 and KOH, and then carbonized under the nitrogen conditions ...
Liliana Giraldo +1 more
wiley +1 more source
Heavy Metal Ions Adsorption from Wastewater Using Activated Carbon from Orange Peel
Journal of Chemistry, Volume 9, Issue 2, Page 926-937, 2012., 2012 Activated carbon obtained from orange peel (ACOP) was synthesized and used for the removal of heavy metal ions (Cr, Cd, and Co) from aqueous solutions. Two different adsorption models were used for analyzing data. Adsorption capacities were determined: copper ions exhibit the greatest adsorption on activated carbon orange peel because of its size and ...
Juan Carlos Moreno-Piraján +1 more
wiley +1 more source
Journal of Chemistry, Volume 9, Issue 2, Page 780-785, 2012., 2012 Activated carbons (ACs) were prepared by pyrolysis of seeds mango in presence of sodium and potassium hydroxide (chemical activities). Seeds mango from Colombian Mango cultives were impregnated with aqueous solutions of NaOH and KOH following a variant of the incipient wetness method. Different concentrations were used to produce impregnation ratios of
J. C. Moreno-Piraján, L. Giraldo
wiley +1 more source