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L. Quiles-Carrillo,R. Balart,T. Boronat,S. Torres-Giner,D. Puglia,F. Dominici,L. Torre 한국섬유공학회 2021 Fibers and polymers Vol.22 No.3
This work reports the preparation and characterization of fully bio-based polymer composites with coconut fibers(CFs) as an alternative to wood-plastic composites (WPCs), typically based on petroleum derived materials. Polyamide 1010(PA1010) was melt-extruded with 20 wt% of CFs and, after that, shaped into pieces by injection molding. Four differentmulti-functionalized compatibilizers were tested to increase the polymer-fiber interactions with the subsequent improvementon toughness. These consisted of two chemically modified vegetable oils, namely maleinized and epoxidized linseed oil (MLOand ELO) respectively, and two commercial additives derived from petroleum and based on glycidyl functionality, that is,low-functionality epoxy-based styrene-acrylic oligomer (ESAO) and polystyrene-glycidyl methacrylate random copolymer(PS-GMA). The addition of all four compatibilizers improved both the mechanical and thermomechanical properties of thecomposites, thus resulting in high-performance composite materials with relatively low water uptake. Furthermore, themorphology of the obtained composites revealed an extraordinary embedment of the fibers into the biopolymer matrix, whichplays a crucial role in improving toughness. Among all the tested compatibilizers, those derived from vegetable oils can beconsidered the most interesting ones due to they offer a more sustainable solution.
Otal, J.,Quiles, A.,Quiles, A.,Perez-Sempere, J.I.,Ramirez, A.,Fuentes, F.,Hevia, M.L. Asian Australasian Association of Animal Productio 2008 Animal Bioscience Vol.21 No.10
The objective of this research was to study the production and quality of forage at three different times of the year (April, June and July) of six winter cereals in the southern plateau of the Iberian Peninsula. The cereals studied were Triticale (xTriticosecale wittm) cv. "Tritano", Oat (Avena sativa L.) cv. "Prevision" and cv. "Saia; Rye (Secale cereale L.) cv. "Giganton", Barley (Hordeum vulgare L.) cv. "Cameo" and cv. "Albacete". The study was carried out in three different locations and over three successive years of harvesting. The three variables considered were location, year and cereal. The % dry matter (DM), % crude protein (CP), % acid detergent fiber (ADF), % neutral detergent fiber (NDF) and % ash content were determined for the three sampling periods and the quality was calculated in milk forage units (MFU/kg DM), the production in kg DM/ha, MFU/ha and kg CP/ha. In all three sampling periods the quality of the cereals was significantly influenced only by the year and by species. However, for production of dry matter (kg DM/ha), milk forage units (MFU/ha) and gross protein (kg CP/ha) all three variables were of significant influence as were their interactions. In the April sampling, the species which showed a significantly higher production ($p{\leq}0.05$) was rye (1,693 kg DM/ha), which, along with its forage quality (16.56% CP, 0.886 MFU/kg DM) meant that the same occurred in MFU/ha and kg CP/ha. Significant differences between species were also found for the June sampling. The most productive cereal was again rye with 2,656 kg DM/ha, although its sharp fall in forage quality meant that barley cv Albacete (2,513 kg DM/ha) returned the highest production in forage units (1,934 vs. 1,951 MFU/ha) and barley cv. Cameo (2,413 kg DM/ha) in gross protein production (242 vs. 264 kg CP/ha). The significantly highest cereal production for July was barley cv. Albacete (4,923 kg DM/ha, 9.11% CP 0.722 MFU/kg DM). As a consequence of the results, we conclude that from the viewpoint of nutritional quality and production, rye is the most suitable for use in early spring in whatever year and location. However, barley cv. "Albacete" is the most appropriate for utilisation in later spring or early summer.
Garcia, Ana Flavia Quiles Marques,Murakami, Alice Eiko,Do Amaral Duarte, Cristiane Regina,Ospina Rojas, Ivan Camilo,Picoli, Karla Paola,Puzotti, Maira Mangili Asian Australasian Association of Animal Productio 2013 Animal Bioscience Vol.26 No.3
The objective of this experiment was to assess the use of different vitamin D metabolites in the feed of broiler chickens and the effects of the metabolites on performance, bone parameters and meat quality. A total of 952 one-day-old male broiler chicks were distributed in a completely randomised design, with four treatments, seven replicates and 34 birds per experimental unit. The treatments consisted of four different sources of vitamin D included in the diet, $D_3$, $25(OH)D_3$, $1,25(OH)_2D_3$, and $1{\alpha}(OH)D_3$, providing 2000 and 1600 IU of vitamin D in the starter (1 to 21 d) and growth phases (22 to 42 d), respectively. Mean weight, feed:gain and weight gain throughout the rearing period were less in animals fed $1{\alpha}(OH)D_3$ when compared with the other treatments (p<0.05). No significant differences were noted among the treatments (p>0.05) for various bone parameters. Meat colour differed among the treatments (p>0.05). All of the metabolites used in the diets, with the exception of $1{\alpha}(OH)D_3$, can be used for broiler chickens without problems for performance and bone quality, however, some aspects of meat quality were affected.
O. Gutierrez,R. Balart,D. Lascano,L. Quiles-Carrillo,E. Fages,L. Sanchez-Nacher 한국섬유공학회 2020 Fibers and polymers Vol.21 No.5
This work is focused on the upgrading olive oil pomace to obtain high environmentally friendly insulationmaterials for the construction and building industry. Upgrading of these wastes has been carried out by using the wet-laidtechnology in combination with different thermoplastic binder fibers both from natural and synthetic origin. After the wetlaidprocess, the obtained veils or non-wovens were subjected to different processes: a hot-press moulding process or acontinuous lamination process. The acoustic insulation properties were obtained by the Kundt’s tube while the thermalinsulating properties were obtained through determining heat transmission resistance (R) and heat absorption parameter (λ). These tests have revealed the excellent insulation properties of the olive pomace-derived materials, specifically, those basedon high surface density non-wovens. The complementary process that follows wet-laid, i.e. hot-press moulding orcontinuous lamination process has a remarkable effect on insulation behaviour. In particular, the hot-pressed materials fromolive pomace show better acoustic insulation while the continuously laminated materials offer the best thermal insulationproperties.