Fingerprint Chromatography Analysis of Lentinan by PMP-HPLC and its Relationship with Immunoactivity [PDF]
, 2021 A PMP-HPLC method for the determination of monosaccharide composition of Lentinan was established.Polysaccharide hydrolysates were performed on a Zorbax Eclipse XDB-C18 column, with a mobile phase consisting of 0.1mol/L phosphate buffer solution-ethyl ...
FAN Liu-ping +5 more
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Sequential Changes of Total Adenine Nucleotide and AdenylicAcid Energy Charge in Muscles of Rats after Death [PDF]
, 2021 Objective To determine the purine adenylate [adenosine triphosphate （ATP）, adenosine diphosphate （ADP）, adenosine monophosphate （AMP）] content in the muscles of both hind limbs of rats at different postmortem interval（PMI）, calculate the changes in the ...
ZHU Wei-hao, ZHENG Zhe, SUN Kai, YANG Meng-zi, et al.
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Formation of Maillard Reaction Products in Heat-Treated Torreya grandis cv. Merrilli Seed Oil and Their Effects on Two Analytical Methods for the Determination of Total Phenolics [PDF]
, 2023 The occurrence of Maillard reaction in heated Torreya grandis cv. Merrilli seed oil was verified by detecting browning index and the contents of the Maillard reaction products (MRPs) 3-deoxyglucosone, methylglyoxal and 5-(hydroxymethyl)furfural, and the ...
XU Xiaojun, LUO Fan, FANG Xuezhi, DU Menghao, HU Lisong, LONG Qizhi, ZHONG Haiyan
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Research on Fingerprint of Lentinan Composition by Microwave Hydrolysis-Ion Chromatography [PDF]
, 2021 A microwave hydrolyzation-ion chromatography method for the determination of lentinan monosaccharide composition was established.Conditions of microwave hydrolysis of polysaccharide: the concentration of trifluoroacetic acid was 3.0 mol/L.The hydrolysis ...
FAN Liu-ping +5 more
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Application of Dispersive Liquid-Liquid Microextraction in Forensic Toxicological Analysis [PDF]
, 2019 Currently, the main sample pretreatment methods for forensic toxic analysis are liquid-liquid extraction （LLE） and solid-phase extraction （SPE）. As a simple, convenient, and low-cost LLE method, dispersion liquid-liquid microextraction （DLLME） has high ...
YANG Yu, ZHANG Yun-feng, LI Xin-tong，et al.
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Dianci bileiqi, 2021 目前利用紫外成像法检测高压电气设备放电的主要手段是从仪器中直接读取光子数,忽略了紫外及视频中的其他有效信息,如放电位置、放电形状、放电光斑个数及放电区域大小等。为便于紫外成像法在电气设备放电的定量化检测中的应用,实现紫外图像量化参数的自动提取,本研究基于跨平台窗口程序编写软件Qt,调用OpenCV图像及视频处理函数库,对紫外图像进行灰度化、二值化、降噪及轮廓跟踪提取,实现了对放电几何参数、坐标参数、轮廓和统计参数的提取。开发了高压电气设备放电紫外成像检测量化参数提取软件,其具有较友好的人机友好界面 ...
王胜辉, 姜婷玥, 李楠
doaj
The effect of ultrasound assisted enzymatic hydrolysis on the physicochemical properties and flavor characteristics of protein peptides from Harpodon nehereus [PDF]
, 2023 Objective: This study aimed to solve the problems of low freshness, heavy bitterness, and poor flavor of protein peptides hydrolyzed by enzymes of Harpodon nehereus （HN）. Methods: Ultrasound assisted enzymatic hydrolysis method was used to prepare the HN
CHEN Yuewen +3 more
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Gaoya dianqi, 2022 基于SF6分解组分检测法的气体绝缘电气设备在线监测及故障诊断技术具有很强的现场抗干扰能力及良好的应用前景。利用紫外光谱技术可以对SF6分解组分中的CS2进行有效检测,但是CS2所处的紫外光谱吸收波段与SF6分解组分中的H2S相重叠,可能存在一定的重叠干扰影响。因此,文中搭建了紫外光谱检测平台,通过配制微量CS2与H2S混合气体模拟真实气体绝缘电气设备中分解组分,对SF6分解组分混合气体中CS2定量检测准确性的问题进行了研究。结果表明:混合气体中不同体积分数的H2S对CS2的定量检测影响较小 ...
刘咏飞 +6 more
doaj
Comparison of different buffer systems for separation of 15 nucleosides by capillary electrophoresis [PDF]
, 2011 对毛细管电泳法分离15种核苷类化合物所用的不同缓冲液体系进行了系统比较,确定不同模式毛细管电泳法分析多种核苷类化合物的最适合背景缓冲液体系(bgE)。分别以四硼酸钠、磷酸氢二钠、乙酸钠、碳酸氢钠、乙酸铵和乙二胺(dEA)为背景电解质,对毛细管区带电泳(CzE)、毛细管电泳-电喷雾飞行时间质谱(CE-ESI-TOf/MS)以及胶束电动毛细管电泳(MEkC)3种模式进行比较,并对其中几种优势缓冲体系进行了优化。结果表明,CzE模式下使用四硼酸钠和磷酸氢二钠缓冲体系无法同时分离15种核苷类化合物 ...
史倩 +6 more
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Dianci bileiqi, 2015 绝缘子在运行过程中会由于表面污秽、凝露等发生表面放电,紫外成像技术作为一种绝缘子表面放电非接触式检测方法,可对绝缘子表面放电进行有效检测。常用的紫外成像光子数、光斑面积等参数会随着检测距离的变化而变化,无法实现不同检测距离时对绝缘子表面放电紫外检测的统一量化描述。本文基于紫外图像处理算法,研究了紫外图像相对光斑面积的计算方法,通过不同检测距离下复合绝缘子和玻璃绝缘子的紫外成像检测,验证了相对光斑面积这一参数基本不随检测距离的变化而变化,可有效实现绝缘子表面放电的量化评估。
丁培 +5 more
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