Discussion on Surface Resistance Test Requirements of Plastic Shell Parts of Explosion-proof Electrical Appliances for Coal Mine

2021 ◽  
2011 ◽  
Vol 239-242 ◽  
pp. 604-607
Author(s):  
Wen Yan Bi ◽  
Xue Mao Guan ◽  
Jian Feng Wan ◽  
Xiao En Yang

As a good insulator, the surface resistance of polyurethane is large and the conductivity is poor, which made it easy to produce static electricity and cause explosion, fire and other incidents. A coating antistatic agent was prepared through designing and modifying which can significantly improve the antistatic properties of polyurethane seal materials for coal mine, without affecting the operational performance. Especially, it not only can meet the requirements of antistatic performance for coal mines, but also environmental friendly.


1996 ◽  
Vol 75 (02) ◽  
pp. 267-269 ◽  
Author(s):  
H Engel ◽  
L Zwang ◽  
H H D M van Vliet ◽  
J J Michiles ◽  
J Stibbe ◽  
...  

SummaryThe currently used activated Protein C resistance test demonstrated to be of limited diagnostic value for the detection of the mutant Factor V Leiden. Moreover, this assay is not useful for patients under anticoagulant therapy. A modification of the APC resistance test, applying Factor V deficient plasma is described which demonstrates a specificity and sensitivity of 1.0. The superiority of the modified APC resistance test over the existing APC resistance test was verified by genotyping.For that purpose, the Amplification Refractory Mutation System (ARMS) was applied to the detection of the G to A mutation at position 1691 in the gene encoding coagulation Factor V. The mutation at that position could be easily detected by using each of two allele-specific oligonucleotide primers concomitantly with one common primer in two separate polymerase chain reactions, thereby amplifying a fragment of 186 base-pairs of the Factor V gene.


1995 ◽  
Vol 74 (03) ◽  
pp. 995-995 ◽  
Author(s):  
K W E Denson ◽  
S V Reed ◽  
M E Haddon

2017 ◽  
Vol 2 (2) ◽  
pp. 83-91
Author(s):  
Nestor Godofredo Ramirez ◽  
◽  
Marjurie Lourince Zanoria ◽  
Andre Mikhail Obierez ◽  
◽  
...  
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