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Search Results: 1 - 10 of 51079 matches for " 梁静 "
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放牧绵羊补饲复合预混料应用效果研究
Application Effect of Feeding Grazing Sheep with Compound Premix
 [PDF]

王博, 张文举,
Hans Journal of Agricultural Sciences (HJAS) , 2015, DOI: 10.12677/HJAS.2015.52009
Abstract:
本研究旨在验证放牧绵羊补饲复合预混料的应用效果,研究选取10月龄新疆细毛羊36只,按补饲情况将绵羊分为三个不同处理组,分为对照组、试验组1、试验组2,每日补饲量分别为0、500 g、500 g,补饲复合预混料为0%、0%、2%,分别于正饲期20天和40天进行称重,记录增重,于45天时进行采血,分离保留血清,测定血液指标,并选取绵羊进行屠宰,记录屠宰指标。实验结果表明,补饲复合预混料增重效果明显,试验组2比对照组增重13.41%,差异显著(P < 0.05)试验2组与试验1组相比,差异极显著(P < 0.01),试验2组比试验1组增重提高1倍;屠宰后,胴体重明显有升高趋势,对照组、试验组1与试验组2显著(P < 0.05),试验组血蛋白含量高于对照组,试验组1与对照组对比血钙含量差异极显著(P < 0.05),试验组2与对照组对比血钙含量差异极显著(P < 0.05),试验组2与试验组1差异极显著(P < 0.01);血磷含量对照组与试验组1相对比差异不显著(P > 0.05);对照组与试验组2对比差异极显著(P < 0.01);试验组1与试验组2对比差异显著(P < 0.05);对照组血糖浓度较试验组1和试验组2均为差异极显著(P < 0.01);试验组1和试验组2对比差异显著(0.01 < P < 0.05);对比发现IGg对照组与试验组1差异不显著(P > 0.05),对照组与试验组2相比较差异显著(P < 0.05),研究结果表明补饲复合预混料能够改善放牧绵羊生产性能和提高其免疫性能。
This study aimed to verify the effect of feeding premix application on grazing sheep so we selected 36 10-month-old Xinjiang fine-wool sheep. Through feeding situation the sheep were divided into three different treatment groups including the control group, the test group 1 and the test group 2. Daily feeding amount was 0 g, 500 g, 500 g and feeding premix was 0%, 0%, 2%. The sheep were weighed at regular feeding time, namely the 20th day and 40th day and weight gains were recorded. Blood samples were collected at the 45th day, serum was separated and retained and blood parameters were determined. And we selected the sheep to be slaughtered and recorded slaughter index. Experimental results showed that the effect of supplement premix on weight gain was obvious, the weight gain of test group 2 was 13.41% higher than of control group and this was sig-nificantly different (P < 0.05), and through test group 2 compared with test group 1, the difference was significant (P < 0.01) and weight gain of test group 2 was increased by 1 than test group 1. And after slaughtered, the sheep’s carcass weight tended to increase significantly and that of control group, test group 1 and test group 2 was significantly different (P < 0.05). Blood protein content of two test groups was higher than control group and by a comparison of the content of blood calcium between test group 1 and control group the difference was significant (P < 0.05). By a comparison of the content of blood calcium between test group 2 and control group the difference was significant (P < 0.05) and by a comparison of the content of blood calcium between two test groups the difference was significant (P < 0.01). By a comparison of the content of hyperphosphatemia between test group 1 and control group the difference was
Improved High-Priority Strategy for P2P Streaming Peer Selection
改进的高度优先策略在P2P流媒体节点选择机制中的研究①

葛宇,
计算机系统应用 , 2009,
Abstract: P2P流媒体技术中节点选择机制是构建流媒体系统的核心问题,针对节点选择机制中的高度优先策略进行改进,新算法既考虑了应用层多播树的平衡性又考虑了节点之间的距离远近和通信连接状况,从而使得网络传输的总体能力提高。同时还对新算法进行了数学模型描述,对其进行实验仿真分析,收到良好效果。
涤纶羧基的氢氧化钾-乙醇滴定法

分析化学 , 1987,
Abstract: 目前很多厂测定羧基还是采用苯酚-氯仿混合液(体积2:3)为溶剂,用KOH-甲醇-苯甲醇滴定法求其含量,该法毒性大,对人体有害,本法毒性小,简便、快速.
胜任力的构成要素是学科馆员制实施的核心

图书馆工作与研究 , 2013,
Abstract: ?本文基于多学科交汇融合的情境,揭示学科馆员岗位所需胜任力要素,在方法上更加充实了学科馆员胜任力要素研究,从而摆脱传统馆员的角色,对学科馆员的选拔和考核具有一定的参考价值。
离子液体电磁驱动研究
,忠诚
南京邮电大学学报(自然科学版) , 2012,
Abstract: 室温离子液体是新兴的绿色环保材料,具有液态温度范围广、不易挥发、良好的导电性和导光性,是微流控技术和光电子器件中良好的流体介质。离子液体的驱动是其能否在这些领域中应用的关键技术,也是应用中常常碰到的瓶颈。本文提出了一种电磁驱动离子液体的方法,无需机械移动装置,可双向驱动,稳定性好,并从离子液体本身性质出发,进行了微观和宏观两方面的理论分析及仿真计算,结果表明这种方式驱动力大,驱动速度较快,只需几伏的低压,能耗低,同时给出了一个最佳通道高宽比,最后分析了本方法存在的负面影响。
我国营利性体育健身中心(俱乐部)服务质量构成要素和评价方法研究
,进?
天津体育学院学报 , 2007,
Abstract: 运用文献资料与调研、因子分析及回归分析等方法,对我国营利性体育健身中心(俱乐部)服务质量构成要素和评价方法进行分析研究。研究结果:我国营利性体育健身中心(俱乐部)服务质量由服务项目与专业水平、设施与可靠性、(消费)结果质量、个性化服务和(俱乐部)环境5因素构成;在我国国情之下,修正我国体育健身行业servqual量表,并在具体运营健身企业中适用,表现出较为理想的应用效果。
磁电弹圆柱中轴对称压缩波的传播
,小勇?
河北科技大学学报 , 2011, DOI: 10.7535/hbkd.2011yx06006
Abstract: 为研究无限长横观各向同性磁电弹圆柱中轴向对称压缩波的传播,考虑16种边界条件,得出广义频散方程,并讨论不同边界条件下波的频散特性。数值结果表明边界条件对磁电弹圆柱中轴向对称压缩波的传播特性有着显著的影响。
一种多目标人工蜂群算法
葛宇?,
计算机科学 , 2015, DOI: 10.11896/j.issn.1002-137X.2015.09.050
Abstract: 为将标准人工蜂群算法有效应用到多目标优化问题中,设计了一种多目标人工蜂群算法。其进化策略在利用精英解引导搜索的同时结合正弦函数搜索操作来平衡算法对解空间的开发与开采行为。另外,算法借助了外部集合来记录与维护种群进化过程中产生的pareto最优解。理论分析表明:针对多目标优化问题,本算法能收敛到理论最优解集合。对典型多目标测试问题的仿真实验结果表明:本算法能有效逼近理论最优,具有较好的收敛性和均匀性,并且与同类型算法相比,本算法具有良好的求解性能。
Ding分次模和强Ding分次模
,
- , 2018, DOI: 10.3785/j.issn.1008-9497.2018.06.002
Abstract: 研究了分次环R上的Ding分次投射(内射)R-模以及强Ding分次投射(内射)R-模,证明了任意分次环上的Ding分次投射(内射)模类是投射(内射)可解的.研究了强Ding分次投射(内射)R-模与Ding分次投射(内射)R-模之间的关系,以及强Ding分次投射(内射)R-模与非分次的强Ding投射(内射)R-模之间的关系.证明了对有限群分次环R,若M是强Ding投射(内射)R-模,则F(M)是强Ding分次投射(内射)的;若N是强Ding分次投射(内射)R-模,则U(N)是强Ding投射(内射)的.
Abstract:This paper presents a study on the Ding graded projective (injective) R-modules and strong Ding graded projective (injective) R-modules over a graded ring R. It is proved that the class of the Ding graded projective (injective) modules over any graded ring is projectively (injectively) resoluble.Some characterizations of these modules are discussed. Some relations between strongly Ding graded projective (injective) R-modules and Ding graded projective (injective) R-modules are listed. Finally, the relation between strong Ding graded projective (injective) R-modules and ungraded strong Ding projective (injective) R-modules is also studied. It is proved that for finite group graded ring R, if M is a strong Ding projective (injective) R-modules, then F(M) is a strong Ding graded projective (injective), and if N is a strong Ding graded projective (injective) R-modules, then U(N) is a strong Ding projective (injective).
水中无机沉淀物对共存微量元素分析的影响
谢玉祥,
环境科学 , 1987,
Abstract: 均相水溶液中有关微量元素的贮存条件及稳定性方面的资料已有报道,但非均相水溶液中不同无机沉淀物对微量元素是否有影响则报道较少。目前,环境监测分析中,有时由于水样成份、元素含量不同,要求分析项目不一,加之贮存条件,溶液酸碱度以及温度变化等因素的影响,使原来无沉淀的水样可能产生沉淀物,或者使原有沉淀物量增加或减少,这样就需考虑沉淀物的存在及其种类对水溶液中微量元素的测定是否有影响,在矿石分析或高纯分析中,有时采用沉淀法将干扰物或基体物与被测微量元素分离,或
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