Results 71 to 80 of about 606 (139)
Research Progress on the Digestion Characteristics and Influencing Factors of Whole Grain Brown Rice [PDF]
The development of the whole grain industry in China is a key measure in implementing the “Food Security Guarante Law” strategy and the “Healthy China” strategy. It also aligns with practicing the broader concept of food security.
TAN Bin +4 more
core +1 more source
Shuitu Baochi Xuebao[目的] 通过测量冻融循环期间沟壁崩塌体积来评价冻融循环对切沟侵蚀的贡献。[方法] 2016—2018年间,选取36条切沟共计463个崩塌点开展了野外调查。基于调查结果,切沟沟壁崩塌主要表现为2种类型:块状崩塌和松散堆积。在每个崩塌点测量2种堆积体的形态参数:崩塌土壤的体积、切沟横断面的宽度和深度,以及相应沟壁土壤的剪切力和硬度。[结果] (1)3年研究期间冻融作用导致的沟壁崩塌强度平均为16.12 m3/(km·a)。2种崩塌类型在切沟内随机发生,单点冻融崩塌量主要集中在0~3 m3 ...
贾晨阳 +5 more
doaj
Analysis and Study on the Determination of Serum Concentration of Vancomycin by HPLC [PDF]
, 2017 目的 探讨万古霉素采用高效液相色谱法测定血药浓度效果。方法 本次实验应用外标法定量,经5%高氯酸处理万古霉素血浆样品,应用高效液相色谱法对血药浓度测定。结果 血浆中万古霉素在1.56-100.00mg·L^-1浓度范围时,具良好的线性关系,为0.33mg·L^-1检测限,1.56mg·L^-1定量限。为97.25%平均回收率,RSD为1.16%。高、中、低浓度RSD日内均值为1.31%,RSD日间均值为1.66%。结论 万古霉素采用高效液相色谱法对血药浓度测定,具取样量少、准确、快速、灵敏等优点 ...
宋祖栏
core
Study on influencing factors and experimental mechanism of free swelling rate of expansive soil [PDF]
Free swelling rate is a critical parameter for identifying and classifying swelling properties of expansive soils. In the current " Standard for Geotechnical Testing Method GB/T 50123—2019", numerous influencing factors affect free swelling rate tests ...
CHEN Yikun1 , CHU Ya1 , CAI Guojun2, YAN Chao3, LIU Songyu4, HAN Aimin1
core +1 more source
Shuitu Baochi Xuebao目的冻融循环是高寒地区重要的物理过程，为明确冻融作用对不同退化程度高寒草甸土体微观结构的影响。方法以青海门源地区不同退化程度高寒草甸土为研究对象，以不同含根量表征不同退化程度，对重塑试样进行冻融循环试验和SEM电镜扫描，分析不同冻融次数及冻融条件下不同质量含水率和含根量对草甸土微观结构的影响。结果随冻融次数增加，高寒草甸土体孔隙分形维数持续增大，平均直径呈减少趋势，在7次冻融后趋于稳定，孔隙度增长集中于前4次冻融中。草甸土体质量含水率越高，冻融后孔隙度增长幅度越大。当质量含水率>40%时 ...
洪晨泽 +6 more
doaj
Study on Preparation and Corrosion Resistance of HPC [PDF]
, 2010 钢筋锈蚀引起混凝土结构过早失效的问题，已成为当今国内外土木工程界的研究热点。特别是沿海及近海地区的混凝土结构，由于遭受海水中氯离子的侵蚀作用，钢筋锈蚀问题尤为严重，由此已造成巨大的社会经济损失。现代高性能混凝土技术为解决这一问题开辟了一条新的途径。高性能混凝土是按耐久性设计的混凝土，由于具有低水胶比，有致密的结构和低渗透性，因此能够抵抗外部侵蚀介质的侵入，从而实现高耐久目标。 本文首先系统地分析了海洋环境条件下氯离子引起混凝土结构中钢筋锈蚀的机理。氯离子通过扩散作用、毛细管作用、渗透作用 ...
宋明辉
core
Progress in the application of extracellular polysaccharides of Weissiella in fermented foods [PDF]
Exopolysaccharides (EPS) are natural high polymers metabolized into the extracellular space by lactic acid bacteria during their growth. EPS have a broad spectrum of biological activities including antitumor, antioxidant, cholesterol-lowering, and ...
HUANG Qian, LIANG Anjian, ZHU Pengcheng, LI Dongliang, TANG Junni
core +1 more source
Effect of moisture on anthracite crushing behavior and grinding energy consumption [PDF]
The change of water occurrence form and content in coal will change the physical characteristics and pore structure of coal, and then affect its crushing process.In order to study the effect of moisture contained in coal on on the crushing behavior of ...
Fengbin ZHANG +8 more
core +1 more source
The Latest Research Progress on Cell-Free DNA and Prospects of Its Forensic Application [PDF]
In recent years， with the continuous progress of DNA extraction and detection technology， cell-free DNA（cfDNA）has been widely used in the life science field， and its potential application value in forensic identification is becoming more and more obvious.
Wen-jing HU, Ting-ting YANG, Ya-ya WANG, Jiang-wei YAN
core +1 more source
A compressive damage model for a rock considering the microcrack mechanical behavior [PDF]
The contributions of the microcrack sliding and propagation to the rock total deformation, the mixed propagation criterion of the microcrack, and the influence of the rock damage degree on the number of the activated microcracks are not completely ...
Cui LIU +5 more
core +1 more source