Shandong University

Qingdao University of Technology

Shandong Institute for Food and Drug Control

Mengmeng Li

Dongshuai Hou

Feng Shi

Lianli Chi

Baojian Hang

Bin Zhang

Xinpeng Wang

Yue Zhang

Pan Wang

Bing Yin

Qihui Geng

Deling Shi

The present application is related to a method for identifying whether porcine heparin is adulterated with heparin from ruminants, comprising: (1) respectively detecting the contents of trisaccharide(4S) and &#x394;UA2S-GlcNAc6S (&#x394;IA) in a sample and at least three batches of porcine heparin standards; (2) calculating a ratio of the trisaccharide(4S) to the &#x394;IA as well as a standard deviation (SD) of the ratio in the porcine heparin standards; when the ratio of the trisaccharide(4S) to the &#x394;IA in the sample exceeds a maximum value of the ratio in the porcine heparin standards+3SD, where the sample is considered to be mixed or adulterated with heparin from ruminants; wherein the detection method used is hydrophilic interaction liquid chromatography-mass spectrometry (HILIC-MS) or multiple reaction monitoring (MRM). The method can distinguish porcine heparin from ovine and bovine heparin based on the structural differences, regardless of the production process the heparin has undergone.

Method for identifying whether porcine heparin is adulterated with heparin from ruminants

The disclosure relates to the technical field of building materials, and in particular, to lightweight aggregate ultra-high performance concrete (UHPC) and a preparation method thereof. The lightweight aggregate UHPC provided in the disclosure is prepared from the following components in parts by weight: cement 220-260 parts; silica fume 100-120 parts; expanded perlite powder 120-160 parts; expanded perlite 230-260 parts; polycarboxylate superplasticizer 15-20 parts; steel fiber 76-93 parts; and water 140-160 parts, where a maximum particle size of the expanded perlite powder is 0.075 mm; and a particle size range of the expanded perlite is 0.075-0.6 mm. The lightweight UHPC prepared according to the design of the disclosure has excellent density performance, and can satisfy requirements of concrete components, etc. in service in super-long-span bridges, super high-rise buildings, and complex marine environments for lightweight, ultra-high strength, and ultra-high durability of cement-based materials, and has a relatively high promotion value.

Lightweight aggregate ultra-high performance concrete (UHPC) and preparation method thereof

Growing community of inventors

Shandong, China

Mengmeng Li