Loss of Fat with Increased Adipose Triglyceride Lipase-Mediated Lipolysis in Adipose Tissue During Laying Stages in Quail

The goal of the current study was to investigate regulation of key genes involved in lipid metabolism in adipose and liver to relate lipolytic and lipogenic capacities with physiological changes at the pre-laying, onset of laying, and actively laying stages of quail. Followed by a 50 % increase from pre-laying to onset of laying, adipose to body weight ratio was significantly reduced by 60 % from the onset of laying to the actively laying stage (P < 0.05), mainly resulting from the significantly increased adipocyte size from the pre-laying stage to the onset of laying and reduction of adipocyte size from the onset of laying to the actively laying stage (P < 0.05). In the adipose tissue of actively laying quail, increased protein expression and phosphorylation of adipose triglyceride lipase (ATGL) together with an elevated mRNA expression of comparative gene identification-58, an activator of ATGL, contributes to increased lipolytic activity, as proved by increased amounts of plasma non-esterified fatty acid (P < 0.05). In addition, decreased mRNA expression of fatty acid transport protein in the actively laying quail could contribute to the adipocyte hypotrophy (P < 0.05). In the liver, relative mRNA expression of apo-very low density lipoprotein (VLDL)-II increased significantly from the pre-laying to actively laying stages (P < 0.05), indicating increased apoVLDL-II actively facilitated VLDL secretion in the actively laying quail. These results suggest that the laying birds undergo active lipolysis in the adipocyte, and increase VLDL secretion from the liver in order to secure a lipid supply for yolk maturation.     

空气氧化法合成草甘膦反应终点判断方法的研究

文章主要研究了草甘膦空气氧化过程中合成终点的判断,通过试验结果,建立了尾氧浓度判断反应终点的方法.该方法能准确、快速地作出反应终点的判断.在最佳的反应条件下,草甘瞵固体含量可达到97％以上,固体收率达到92％以上,并且质量和收率都很稳定.     

废橡胶粉增韧环氧沥青及其机理研究

引入废橡胶粉可改善道路铺装用环氧沥青材料的低温抗裂性能.考察了反应温度、废橡胶粉含量和顺酐含量对沥青性能的影响.采用正交实验确定了如下最佳工艺：反应温度为170℃,废橡胶粉含量12 g/100 g基质沥青,顺酐含量3.2 g/100 g基质沥青.制备的废橡胶粉改性环氧沥青材料在-20℃下具有1.25％的断裂延伸率,在23℃常温下具有2.12 MPa的强度和126.34％的断裂延伸率.通过Mooney-Rivlin方程对废橡胶粉改性环氧沥青应力应变曲线的分析研究表明：添加废橡胶粉改性产生了新的化学交联,导致其化学交联密度增大,同时存在物理缠结,废橡胶粉与环氧沥青固化产生了互穿网络结构,导致材料强度和韧性均明显增加.     

辉光放电等离子体处理有机染料直接黑EX废水

辉光放电电解是一种新型的产生等离子体的电化学方法。在惰性电解质水溶液中进行辉光放电电解,可以产生大量的.OH、.H、e-aq、HO2.等活性粒子,且产物的总生成量超过了根据法拉第定律计算的产量,每通过1 mol电子可生成12 mol.OH。.OH氧化能力非常强,可以无选择地降解各种有机物。文章探讨了电压、初始浓度、pH、催化剂Fe2+等因素对辉光放电降解直接黑EX效果的影响。用紫外可见吸收光谱检测了染料的降解过程。实验表明:利用该方法可以使水中染料大部分降解。直接黑EX优化降解条件为:工作电压610 V,pH 3.12,Fe2+催化作用下降解效率明显提高。     

A novel multifunctional phosphorous and nitrogenous reactive flame retardant toward epoxy resins by one-pot method

Epoxy resin (EP) has attracted considerable attention in packaging, electronic devices, aerospace, and coatings fields owing to its remarkable chemical and physical performance. However, the inherent flammable performance and unfavorable brittle nature seriously restricted its application in sophisticated industry. Herein, an efficient reactive 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO)-based flame retardant (DB-DAD) was prepared by a facile “one-pot” method. Due to their synergistic gas-phase and solid-phase flame-retardant effects, DB-DAD modified EP composites (EP/DB-DAD composite) easily achieved UL-94 V-0 ratings, and an EP/DB-DAD composite with a 0.32 wt% phosphorus content had an excellent (30.2%) limiting oxygen index. In addition, the amounts of heat and smoke decreased by 28.1% and 24.8%, respectively. Due to the introduction of long and flexible aliphatic chains, the EP/DB-DAD composites exhibited satisfactory mechanical properties, the flexural and tensile toughness of EP/6% DB-DAD were 82.5% and 62.2% higher than those of neat EP, respectively. Furthermore, EP/DB-DAD composite showed good transparency (>85%) and favorable UV shielding performance. The EP/DB-DAD composite with good comprehensive performance is extremely promising to accelerate EP application in high-tech industries.     

三种节能抽油机扭矩特征分析

为了提高抽油机的系统效率,降低能耗,有必要研究一下抽油机的运动轨迹及其扭矩分析,来探究每种抽油机的实用条件。在研究抽油机的结构时,通过对调径变矩、下偏杠铃、悬挂偏置三种节能抽油机的结构计算分析,对比每种抽油机的最大净扭矩、最小负扭矩、均方根扭矩,平均功率,周期载荷系数。调径变距抽油机取消了曲柄平衡,下偏杠铃抽油机改造性强,悬挂偏置抽油机消除负扭矩,减少其扭矩曲线的波动性。所以每种抽油机在在不同的井况下可以不同程度的提高抽油机系统效率。     

外墙仿砖涂料的制备

外墙仿砖涂料将成为未来外墙装饰面发展的趋势。本文探究了不同乳液、成膜助剂、增稠剂及乳液沙子比对外墙仿砖涂料性能的影响,并据此得到了综合性能优良的外墙仿砖涂料。测试结果表明：所制得的外墙仿砖涂料达到了JG/T24--2000《合成树脂乳液砂壁状建筑涂料》标准,且在耐水性、耐洗刷性和耐玷污性等方面表现更为优秀。     

高塔复合肥熔体动态过滤装置的研发

针对高塔复合肥熔体造粒工艺中所用的差动造粒装置经常出现的堵塞问题,研发了1套动态过滤装置。该装置经完善后,使造粒喷头的连续工作时间得以大幅延长,成品合格率得到保障。     

基于K3生产辅助软件的物料分类与编码

当前以实施K3生产辅助软件为契机,对企业物料编码进行系统、详细的研究,介绍了物料分类的方法,说明了进行物料编码时遵循的规则,阐述了物料编码的意义。结合金蝶K3软件,给出了采购物料的编码方案以及使用方法,该方法体现了编码的实用性和扩展性,为软件的顺利运行提供了可靠的数据来源。     

高铁煤矸石酸浸液合成氧化铁红的实验研究

以高铁煤矸石为原料,先用硫酸酸浸的方法获得含有铝离子的硫酸铁溶液;采用分步沉淀的方法,使Fe3+完全转化为氢氧化铁凝胶而与Al³⁺分离;再将获得的氢氧化铁凝胶烘干后高温煅烧;最后将煅烧产物磨粉过筛,获得了氧化铁红。确定了合成氧化铁红的工艺条件是：酸浸液中铁离子的浓度为0.31 mol/L;分离Fe³⁺与Al³⁺时,氢氧化钠溶液的浓度为1 mol/L,且控制终点pH在3.0左右;干凝胶焙烧温度为800 ℃,时间为60 min。XRD及化学分析结果表明：所得产物为氧化铁红,符合GB/T 1863-2008《氧化铁颜料》的相关要求。