Subjects: Digital Publishing >> New Media submitted time 2023-10-08 Cooperative journals: 《中国传媒科技》
Abstract:随着国家层面将"互联网+"纳入政府工作报告,行业、企业也因"互联网+"迸发出新的活力,态度逐渐由接受到认可。期刊编辑如何转变思想意识,并将思想的转变带入到编辑工作中,是值得研究的课题。
Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-12-13 Cooperative journals: 《计算机应用研究》
Abstract: Attribute-based encryption algorithm has the characteristics as flexibility, fine-grained and high security. This paper introduces an improved attribute-based outsourced encryption algorithm based on secure data access control attribute-based encryption, to reduce the resources consumed by computation, which outsources the complex bilinear pairings in the encryption computing to the fog node to reduce the user's computation overhead. By simplifying the system parameters, we reduce the random number generated by attribute authority for every attribute to shorten the length of ciphertext and the key, as well as the storage cost of the system. And the security proof of the scheme is given in the last part of this paper.
Subjects: Biology >> Zoology submitted time 2017-10-10 Cooperative journals: 《动物营养学报》
Abstract:本试验旨在研究饲粮中添加稀土壳糖胺螯合盐(rare earth-chitosan chelate,RECC)对断奶仔猪生长性能、血清生化指标、营养物质消化率及粪中微生物菌群的影响。试验选取240头28日龄健康纯种大白仔猪,随机分成4组,每组4个重复,每个重复15头仔猪。对照组饲喂基础饲粮,试验组分别饲喂在基础饲粮中添加0.02%、0.03%和0.04% RECC的饲粮。试验期28 d。结果显示:1)与对照组相比,饲粮添加0.02%和0.03% RECC显著提高断奶仔猪平均日增重和平均日采食量(P0.05),但有降低大肠杆菌数的趋势。综上所述,饲粮中添加RECC可以通过提高断奶仔猪体内的激素含量、调节微生物平衡,进而改善仔猪的生长、免疫等功能,且RECC在断奶仔猪中较为适宜的添加量为0.02%。
Subjects: Biology >> Zoology submitted time 2017-10-10 Cooperative journals: 《动物营养学报》
Abstract:本试验旨在研究牛磺酸(Tau)对种公猪性欲、精液品质、血清激素含量及精浆抗氧化能力的影响。选用24头年龄、体重相近的健康成年大约克夏种公猪,随机分为4个组,每组6个重复,每个重复1头猪。各组分别饲喂牛磺酸添加水平为0(对照组)、2、4、6 g/kg的饲粮,试验期90 d,分为1~45 d和46~90 d 2个阶段。结果表明:1)试验46~90 d时,添加6 g/kg牛磺酸显著提高了种公猪的性欲(P<0.05)、采精量(P<0.01)、精子活力(P<0.05),4 g/kg牛磺酸改善了精子密度和精子畸形率(P<0.05);2)与对照组相比,6 g/kg牛磺酸水平组极显著提高了种公猪血清促黄体素(LH)含量(P<0.01),显著提高了睾酮(T)含量(P<0.05);3)试验46~90 d时,6 g/kg牛磺酸显著降低了种公猪精浆丙二醛(MDA)含量(P<0.05),显著提高了超氧化物歧化酶(SOD)活力(P<0.05),4 g/kg牛磺酸显著提高了谷胱甘肽过氧化物酶(GSH-Px)活力(P<0.05)。由此可见,饲粮中长期添加牛磺酸可以调控种公猪血清激素含量,增加精浆抗氧化能力,进而增强种公猪性欲,提高种公猪精液品质,本试验条件下牛磺酸适宜添加水平为6 g/kg。