Meanwhile, the UFA high-strength concrete possesses good durability and creep property. 同时,耐久性良好,高性能混凝土也具有良好的徐变性能。
Research on Early Self-desiccation and Autogenous Shrinkage of Cement-based Materials Containing Ultra-fine Fly Ash UFA水泥基材料早期自干燥及自收缩研究
Three empirical equations describing the relationship between strength of RAC and binder-water ratio, and percentage of recycled aggregate ( RA), and UFA content respectively were put forward by multivariate regression analysis. 采用多元回归分析方法,建立了再生骨料混凝土强度与胶水比、再生骨料掺量及UFA掺量的经验公式。
According to the pore theory of hardened cement paste, early self-desiccation effect of cement-based materials containing ultra-fine fly ash ( UFA) was researched by the combination of theory and experience. 基于水泥石孔隙理论对超细粉煤灰(Ultra-fineflyash,简称UFA)水泥基材料的早期自干燥效应进行了理论分析及试验研究。
The bond stress of steel-bar in HPC containing UFA is a little higher than ordinary concrete, shear strength is near to that of ordinary concrete, the strain-stress curve is also similar, but dry shrinkage and creep are lower. 与同强度等级的普通混凝土相比,超细粉煤灰高性能混凝土的钢筋握裹力有所提高,干缩和徐变降低,而抗剪强度则与之接近,应力-应变曲线与之类似。
The dense packing and micro-aggregate effect of UFA play an important role in improving early compressive strength, but 14 days later, the pozzolanic effect started to play a role in improvement of strength. 在早期UFA对强度的贡献主要由密实填充和微集料效应提供,14d后火山灰效应开始发挥作用。
Research on RECK Regulation and UFA Effecting in Lymphatic Metastasis of Tongue Squamous Cell Carcinoma 舌鳞癌淋巴道转移中RECK基因的调控机制与板蓝根组酸干预的实验研究
The UFA content was 81.22% in the fatty acids which was higher than that of SFA. 脂肪酸中不饱和脂肪酸(UFA)含量为81.22%,高于饱和脂肪酸(SFA);
And the improved testing device of autogenous shrinkage was used to test early autogenous shrinkage of UFA concrete. 在此基础上,采用改进的混凝土自收缩试验装置对UFA混凝土的早期自收缩变形进行了测试。
Particle size distribution and particle morphologies of UFA were also studied. Results show that UFA has satisfactory water reducing and reinforcing role. 研究了超细粉煤灰的粒径分布和颗粒形貌特征,结果表明UFA具有令人满意的减水增强作用。
The results indicated that the inner self-desiccation degree of hardened cement paste containing UFA reduced more than that of ordinary hardened cement paste. 结果表明,相比于基准水泥石,UFA水泥石内部自干燥程度大大降低;
The composition of fatty acids had three characteristics. First, the content of UFA was higher than that of SFA. 齐口裂腹鱼肌肉脂肪酸的组成有三个特点:不饱和脂肪酸的含量高于饱和脂肪酸;
Density, ignition loss, water absorption and ratio of compressive strength f ( cu, 28 d) of UFA are increased with the increasing of fine grains obtained, but ratio of water requirement is decreased at the same time. 随着细度的增加,UFA的密度、烧失量、吸水率和28d抗压强度比f(cu,28d)随之增大,需水量比则随之减小。
The early autogenous shrinkage of highway concrete containing ultra-fine fly ash ( UFA) was investigated, and the influence of UFA on early cracking sensitivity of concrete was analyzed. 目的研究掺超细粉煤灰(Ultra-fineflyash,简称UFA)的道路混凝土早期自收缩特征及UFA对混凝土早期开裂敏感性的影响规律。
In dona intestinalis UFA was 36. 68%, PUFA was 23. 34%, EPA plus DHA was 9. 8%. 玻璃海鞘中UFA占脂肪酸总量的36.68%,其中PUFA为23.34%,EPA+DHA占9.8%。
According to the analysis of the stress-strain curve, the current specifications can be adopted to design the UFA high performance concrete. 通过应力-应变全曲线分析可知,UFA高性能混凝土可采用现行规范设计;
Study on Early Autogenous Shrinkage and Cracking Sensitivity of Highway Concrete Containing Ultra-Fine Fly Ash UFA道路混凝土早期自收缩及开裂敏感性研究
Study on the Relationship between Early Autogenous Shrinkage and Drying Shrinkage of UFA Composite Cementitious Materials UFA水泥基复合胶凝材料早期自收缩与干燥收缩的相互关系研究
The results showed that there were abundant SFA and UFA in the clam meat and the amount of EPA and DHA was 6.904% and 7.244%, and the amount of Cl-was 601mg/ 100g. 结果表明,文蛤中含有丰富的饱和脂肪酸和不饱和脂肪酸,EPA和DHA含量分别高达6.904%和7.244%,无机离子中呈咸味的Cl-含量最高,达601mg/100g。
On the basis of the micro tests and analyses and taking into comprehensive consideration variations in construction and curing conditions, it is concluded that the UFA amount is better not to exceed the proportion of 30% in engineering practice. 同时在微观测试分析基础上,综合考虑施工及养护条件等因素的变异,认为在实际应用中,UFA掺量以不超过30%为宜。
Higher alcohols ( HA) and unsaturated fatty acids ( UFA) transfer into carbonyl compounds by free radicals, on the assumption that the radicals are passed down in the chain-reactions of redox. 推测不饱和脂肪酸和高级醇以自由基为媒介,通过自由基氧化还原链式反应生成羰基化合物。
UFA of Cherry Valley duck was the highest, whereas PUFA and EFA were the lowest, however, White Muscovy just the opposite. 2. 樱桃谷鸭的UFA最高,而PUFA和EFA最低,白羽番鸭恰好相反。
Tung oil is a kind of high quality dry oil, it is composed of unsaturated fatty acids ( UFA) mostly, such as elaeostearic acid, and has widely used for industrial applications. 桐油是优质干性油,桐油主要成分是以桐酸为主的不饱和脂肪酸,具有重要的工业用途。
In early aging, reactive oxygen species ( ROS) react with UFA by transferring electron of radicals in the form of non-enzymatic oxidation, to produce carbonyl compounds. 在老化前期,来源于溶解氧的活性氧族以自由基传递电子的形式非酶氧化不饱和脂肪酸,形成老化羰基化合物。
Unsaturated fatty acid ( UFA), which mainly come from the sea fish, have the extremely important nutritional and medicinal value. 多不饱和脂肪酸具有极其重要的营养价值和药用价值,其原料主要来自海洋鱼类。
Unsaturated fatty acids are rich in breast milk, which are necessary for the growth and development, and which have an important role in the formation of myelin sheath, brain and vision development of infants and young children. 母乳中丰富的不饱和脂肪酸(UFA)是婴幼儿生长发育所必需的,对婴幼儿神经髓鞘的形成,脑和视力的发育有极其重要的作用。
It was proved that the fatigue properties of UFA-HPC prestressed girder meet the requirements of railway code when 20-40% of cement was replaced equally by UFA. 在国内首次证明以20~40%的UFA等量取代水泥,生产的超细粉煤灰高性能混凝土预应力梁疲劳性能满足规范要求。
Camellia oil is mostly composed of unsaturated fatty acids ( UFA), such as oleic acid and linoleic acid, and the average content of UFA is above 90%. So Camellia oil is a high quality edible oil. 茶油中油酸、亚油酸等不饱和脂肪酸的含量在90%以上,是一种优质食用油。
Camellia oil contains oleic acid and linoleic acid UFA mostly, and the average content of UFA is above 90%. So it is one which of the most popular high nutritional value edible oil in the current. 茶油主要由油酸、亚油酸等不饱和脂肪酸组成,其含量一般在90%以上,是当前国内最受欢迎的高营养价值的食用油之一。