scholarly journals Study the Effect of Copper Oxide Nanoparticles on Reduce Crude Oil

2019 ◽  
Vol 12 (3) ◽  
Author(s):  
Sarah Talib Shakir ◽  
Husham Al-Tameemi

In transportation of fluid, the drag reducers in pipeline are important parameters because of drag reduction increased the ability of pump fluid when adding small amounts of additive to fluid. The frictional pressure loss in pipes is waste energy and it very costly so the drag reducing minimizes flow turbulence, reduces the costs of energy and increases throughput.  The transportation of reducing crude oil is very difficult and needs some treatment to improve its transportation and this is because of its high viscosity. The purpose of this research is to study the effect of nanoparticles of copper oxide on viscosity of R.C. and other parameters when transport it through pipes. This research investigated the viscosity, pressure drop and other parameters in three pipes (0.0127, 0.01905 and 0.0254 m) I.D. with different concentrations (0.00625, 0.0125, 0.01875, 0.025 and 0.0375 (gm/L) w/v) at 50 oC and the flow rate is 50% of maximum. The results show that the performance of the drag reduction is much better in the larger pipes diameter than the smaller one. Also, the CuO NP's effect on R.C. viscosity and the maximum viscosity deviation is about 4%. In Addition to CuO NP's to R.C. has reduced the %Dr, pressure drop and shear stress.

2020 ◽  
Vol 154 ◽  
pp. 277-286
Author(s):  
N.J. Bonilla-Bird ◽  
Y. Ye ◽  
T. Akter ◽  
C. Valdes-Bracamontes ◽  
A.J. Darrouzet-Nardi ◽  
...  

2021 ◽  
Vol 29 (6) ◽  
pp. 60-66
Author(s):  
Ivan Andreevich Sitnikov ◽  
Daria Ramilevna Shaikhova ◽  
Anna Mikhailovna Amromina ◽  
Marina Petrovna Sutunkova ◽  
Yuliya Vladimirovna Ryabova ◽  
...  

Introduction. Copper plays an important role in the metabolism of the brain, but particles of copper, in the nanometer range, exhibit neurotoxic properties and cause malfunctioning of brain cells. Material and methods. For 6 weeks, 3 times a week, the animals were injected with a suspension of NPs of copper oxide. The determination of the expression of the genes GRIN1, GRIN2a, and GRIN2b, encoding the proteins GluN1, GluN2a, and GluN2b, respectively, was carried out by real-time PCR with probes. Results. A statistically significant decrease in the expression level of genes encoding NMDA receptor proteins was determined when exposed to 0.5 mg/ml CuO nanoparticles (ΔCt(GRIN1) = 0.813; ΔCt(GRIN2A) = 3.477; ΔCt(GRIN2B) = 1.37) in comparison with control group (ΔCt(GRIN1) = 6.301; ΔCt(GRIN2A) = 7.823; ΔCt(GRIN2B) = 4.747). Conclusion. Evaluation of gene expression of the NMDA receptor may be present in a genetic marker to determine the toxic effect of copper oxide nanoparticles; however, further studies are needed, including behavioral tests to confirm the clinical manifestations of neurodegenerative disorders.


2017 ◽  
Vol 14 (1) ◽  
pp. 279-284 ◽  
Author(s):  
Hamideh Eslami Chalandar ◽  
Hamid Reza Ghorbani ◽  
Hosein Attar ◽  
Seyed Abolhasan Alavi

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