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Roberto García Fernández Consuelo Pizarro García Antonio Gutiérrez Lavín Julio L. Bueno de las Heras José Juan Pis 《Waste management (New York, N.Y.)》2013,33(5):1151-1157
The aim of this work consists on determining biomass fuels properties and studying their relation with fixed and variable costs of stores and handling systems. To do that, dimensions (length and diameter), bulk density, particle density and durability of several brands and batches of wood pellets and briquettes were tested, according to international standards. Obtained results were compared with those in literature. Bulk density tests were applied for several other biomass fuels too, and later used to determinate which ones of all the biomass-fuels tested are economically more profitable for a typical transport/store system made of a screw conveyor and a concrete bunker silo. 相似文献
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Antonio Farina 《黑龙江环境通报》2014,34(7):628-634
Placental development is a major cause of a successful pregnancy, and in the presence of placental dysfunction, there is a higher risk of pregnancy complications. Doppler technology can be used for screening and detecting the more common pregnancy-associated diseases like preeclampsia, intrauterine growth retardation, and perinatal loss. In this review, the biophysical markers are discussed in the light of the latest information that appeared in the medical literature. © 2014 John Wiley & Sons, Ltd. 相似文献
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Janaína Campos Senra Carlos Tadashi Yoshizaki Giovana Farina Doro Rodrigo Ruano Maria Augusta Bento Cicaroni Gibelli Agatha Sacramento Rodrigues Vera Hermina Kalika Koch Vera Lúcia Jornada Krebs Marcelo Zugaib Rossana Pulcineli Vieira Francisco Lisandra Stein Bernardes 《黑龙江环境通报》2020,40(11):1408-1417
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Clara Musa Roberta Licheri Antonio Mario Locci Roberto Orrù Giacomo Cao Miguel Angel Rodriguez Lucyna Jaworska 《Journal of Cleaner Production》2009,17(9):877-882
The conventional (hot pressing or HP) and the novel (spark plasma sintering or SPS) consolidation techniques were compared when processing Ti–Al2O3–TiC powders obtained by self-propagating high-temperature synthesis (SHS). It was found that the two different methods are able to produce similar materials, in some cases (Vickers hardness and wear rate) slightly better for SPSed samples. However, SPS does not need sintering temperatures as high as HP to obtain fully dense products. Most significantly, processing times were strongly reduced when adopting the SPS technique instead of HP, i.e. 4–7 min and about 5 h, respectively. Finally, when the total energies required during each SPS or HP experiment were compared, it was found that the use of the SPS technology allowed for an energy saving in the order of 90–95%. This fact makes SPS significantly advantageous from environmental and economical points of view compared to HP. 相似文献