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| 1 | 环境温度和日粮锰对肉种鸡产蛋性能、蛋品质和血浆生化指标的影响显示文摘本试验旨在研究环境温度和日粮锰对肉种鸡产蛋性能、蛋品质和血浆生化指标的影响。试验采用双因素完全随机设计,包括2个环境温度(一个正常温度,21±1°C;一个高温,32±1°C)和3个不同的饲粮锰处理(在玉米-豆粕型基础日粮中添加0 mg/kg的锰、120 mg/kg的锰(来源分别为Mn SO4·H2O和蛋白锰)。因此,试验共6个处理组,每个组6个重复,每个重复4只鸡。结果表明高温降低了蛋重(P<0.0001)、产蛋率(P<0.0001)、产蛋量(P<0.0001)、采食量(P<0.0001)、饲料转化率(P<0.0001)、蛋壳强度(P<0.05)和蛋壳厚度(P<0.0001)、血浆三碘甲状腺氨酸水平(P<0.05)、碱性磷酸酶活性(P<0.04);提高了直肠温度(P<0.0001)、血浆丙二醛水平(P<0.02)、乳酸脱氢酶(P<0.002)、天冬氨酸转氨酶和肌酸激酶的活性。与不添加锰的饲粮相比,无论添加有机锰还是无机锰都增强了肉种鸡的蛋壳强度(P<0.05),降低了血浆三碘甲状腺氨酸和蛋白质羰基含量(P≤0.05)。与不添加锰的饲粮相比,饲喂添加有机锰日粮的肉种鸡的蛋壳厚度增加(P<0.01)。环境温度和饲粮锰在产蛋率、产蛋量、采食量和饲料转化率有相互作用(P<0.05)。在正常温度下,日粮无机锰或有机锰对产蛋率、产蛋量、采食量和饲料转化率不产生影响。然而,在高温情况下,饲喂有机锰日粮提高了肉种鸡产蛋率、产蛋量、采食量和饲料转化率(P<0.03)。本试验的结果表明:在32-45周龄,高温显著降低了产蛋性能、蛋壳质量,并诱导脂质过氧化反应和组织损伤。而日粮中添加有机锰或无机锰可以增加蛋壳强度和肉种鸡耐热性,并减少了蛋白质的氧化。综上,有机锰可以减轻高温对肉种鸡产蛋性能的负面影响。 | 樊倩 Y.W.Zhu J.J.Xie W.X.Li L.Lu L.Y.Zhang C.Ji X.Lin H.C.Liu J.Odle X.G.Luo | 2015 | 广东饲料2015，24，8： | 7 |
| 2 | Synthesis of Ni nanowires via a hydrazine reduction route in aqueous ethanol solutions assisted by external magnetic fields显示文摘One-dimensional Ni nanostructures were synthesized via a hydrazine reduction route under external magnetic fields. The mixture of de-ionized water and ethanol was used as the reaction solvent and hydrazine hydrate as reducing agents. The morphology and properties of Ni nanostructures were characterized by X-ray diffractometer(XRD), scanning electron microscopy(SEM), and vibrating sample magnetometer(VSM). It was found that the magnetic field strength, concentration of Ni ions,reaction time and temperature as well as p H values played key roles on formation, microstructures and magnetic properties of Ni nanowires. The optimal wires have diameter of ~200 nm and length up to ~200 μm. And their coercivity is ~260 Oe, which is much larger than the commercial Ni powders of 31 Oe. This work presents a simple, low-cost, environment-friendly and large-scale production approach to fabricate one-dimensional magnetic materials. The resulting materials may have potential applications in conductive filters, magnetic sensors and catalytic agents. | L.Y.Zhang J.Wang L.M.Wei P.Liu H.Wei Y.F.Zhang | 2009 | Nano-Micro Letters2009，1，1： | 4 |
| 3 | Preparation and growth mechanism of nickel nanowires under applied magnetic field显示文摘Nickel nanowires with large aspect ratio of up to 300 have been prepared by a hydrazine hydrate reduction method under applied magnetic field. The diameter of nickel nanowires is about 200 nm and length up to 60 μm. The role of magnetic field on the growth of magnetic nanowires is discussed and a magnetic nanowire growth mechanism has been proposed. Nickel ions are firstly reduced to nickel atoms by hydrazine hydrates in a strong alkaline solution and grow into tiny spherical nanoparticles. Then, these magnetic particles will align under a magnetic force and form linear chains. Furthermore, the as-formed chains can enhance the local magnetic field and attract other magnetic particles nearby, resulting finally as linear nanowires. The formation and the size of nanowires depend strongly on the magnitude of applied magnetic field. | J.Wang L.Y.Zhang P.Liu T.M.Lan J.Zhang L.M.Wei Eric Siu-Wai Kong C.H.Jiang Y.F.Zhang | 2010 | Nano-Micro Letters2010，2，2： | 4 |
| 4 | STUDY ON PREPARATION, COMPLEX PERMITTIVITY,PERMEABILITY AND MICROWAVE PROPERTIES OF BaZnzCo(2-z)Fe16O27/SiO2 MICROCRYSTALLINE GLASS CERAMICS显示文摘BaZnz Co2- z Fe16 O27 /SiO2 microcrystalline glass ceramics with Z=0.0, 0.5, 0.8 and 1.1 were prepared at temperature 1200℃ for 5h by citrate sol-gel process. The complex dielectric constant and complex permeability of BaZnzCo2-zFe16O27/SiO2-paraffin wax composites had been measured. Both the complex dielectric constant and dielectric loss exhibit almost no variation with frequency in 0.1-6.0GHz. The real part of permeability decreases with increasing frequency for all samples, and the imaginary part of permeability exhibits a clear resonance peak at 1.44GHz for Co2 W/SiO2,1.32GHz for Zn0.5 Co1.5 W/SiO2, 1.20GHz for Zn0.8Co1.2 W/SiO2, and 1.08GHz for Zn1.1 Co0.9 W/SiO2. It is also showed that the content of zinc has a close effect on the magnetic properties of BaZnz Co2-zFe16 O27/SiO2 microcrystalline glass ceramics,the greater the zinc content, the higher the values of imaginary part of permeability and magnetic loss. | H.J.Zhang X.L.Jia X.Yao L.Y.Zhang | 2003 | Acta Metallurgica Sinica(English Letters)2003，16，6： | 0 |
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