Molecular ecotoxicological effect of CuO nanoparticles stress on Bellamya aeruginosa

2020 ◽  
Vol 10 (6) ◽  
pp. 955-963
Author(s):  
Jinying Peng ◽  
Taowu Ma ◽  
Yang Wu
Keyword(s):  
Atpase Activity ◽  
Exposure Time ◽  
Cuo Nanoparticles ◽  
Short Exposure ◽  
Hsp70 Expression ◽  
Contaminated Sediment ◽  
Short Exposure Time ◽  
Cuo Nps ◽  
Bellamya Aeruginosa ◽  
Ecotoxicological Effect

In this research, responsive sensitivities of hepatopancreatic Na+, K+-ATPase, malondialdehyde (MDA) and heat shock protein 70 family (HSP70) in Bellamya aeruginosa to CuO nanoparticles (CuO-NPs) were investigated through sediment bioassay, potential molecular ecotoxicological mechanism of CuO-NPs stress on Bellamya aeruginosa was explored, and feasibility of Na+, K+-ATPase, MDA and HSP70 as biomarkers for CuO-NPs contaminated sediment was evaluated. The results showed that under the stress of CuO-NPs, three molecular biomarkers displayed significant concentration- and time-effect relationships. After exposure to contaminated sediment with different concentrations of CuO-NPs, the Na+, K+-ATPase activity initially increased and then deceased; the content of low MDA initially increased and then deceased as well, while the content of high MDA showed a fluctuated trend. For HSP70, short exposure time (3 d) induced a sharp increase in HSP70 expression, but long exposure time had little effect on HSP70 expression. It demonstrated that the hepatopancreatic Na+, K+-ATPase activity and MDA content showed good sensitivity to CuO-NPs stress, whereas HSP70 only responded to CuO-NPs stress within short exposure time. HSP70 may be not a suitable long-term biomarker for CuO-NPs stress.

Speed Analysis of Laser Speckle Contrast with Ultra-Short Exposure Time

2018 ◽  
Vol 38 (4) ◽  
pp. 0411008
Author(s):  
安晓英 An Xiaoying ◽  
张茹 Zhang Ru ◽  
宋丽培 Song Lipei ◽  
武鹏飞 Wu Pengfei
Keyword(s):  
Exposure Time ◽  
Laser Speckle ◽  
Short Exposure ◽  
Short Exposure Time ◽  
Speckle Contrast

Short Exposure Time Characteristics Of X-Ray Generators

1983 ◽  
Author(s):  
Bruce A. Horn ◽  
Kim C. Luk ◽  
David M. Thomasson ◽  
Charles E. Finney
Keyword(s):  
Exposure Time ◽  
Short Exposure ◽  
Short Exposure Time ◽  
X Ray

Short Exposure Time Sensitivity of White Cells to Shear Stress

ASAIO Journal ◽  
2003 ◽  
Vol 49 (6) ◽  
pp. 687-691 ◽  
Author(s):  
Janell Carter ◽  
Katia Hristova ◽  
Hiroaki Harasaki ◽  
W. A. Smith
Keyword(s):  
Shear Stress ◽  
Exposure Time ◽  
Short Exposure ◽  
Short Exposure Time ◽  
Time Sensitivity

Antigiardiasic activity of Cu(II) coordination compounds: Redox imbalance and membrane damage after a short exposure time

2019 ◽  
Vol 195 ◽  
pp. 83-90 ◽  
Author(s):  
Yadira Rufino-González ◽  
Martha Ponce-Macotela ◽  
Juan Carlos García-Ramos ◽  
Mario N. Martínez-Gordillo ◽  
Rodrigo Galindo-Murillo ◽  
...  
Keyword(s):  
Exposure Time ◽  
Coordination Compounds ◽  
Membrane Damage ◽  
Short Exposure ◽  
Short Exposure Time ◽  
Redox Imbalance

scholarly journals Comparison Between Single-Aperture and Multi-Aperture Approaches to Computer Correction of Images

2020 ◽  
Vol 237 ◽  
pp. 06003
Author(s):  
Vadim Dudorov ◽  
Anna Eremina
Keyword(s):  
Numerical Simulation ◽  
Exposure Time ◽  
Image Synthesis ◽  
Short Exposure ◽  
Small Scale ◽  
Short Exposure Time ◽  
Observation Systems ◽  
Order Of Magnitude ◽  
Single Aperture ◽  
Time Required

The effectiveness of the reconstruction of images formed by single- and multi-aperture systems and distorted by an atmospheric turbulence is analyzed in this work. Based on numerical simulation, we show that the use of multi-aperture observation systems for the computer correction of atmospheric distortions under anisoplanar conditions can significantly reduce the exposure time. Main distortions are well corrected during image synthesis for a short exposure time, which corresponds to a “frozen” turbulence. The time required for the correction of residual small-scale distortions is an order of magnitude shorter than in the case of synthesis of long-exposure images with the use of traditional single-aperture observation systems.

Automatic Orientation Mapping with Synchrotron Radiation

1988 ◽  
Vol 143 ◽  
Author(s):  
G. Gottstein
Keyword(s):  
Synchrotron Radiation ◽  
Exposure Time ◽  
Experimental Results ◽  
Short Exposure ◽  
Experimental Setup ◽  
Short Exposure Time ◽  
Back Reflection ◽  
Orientation Mapping

AbstractSynchrotron radiation can be utilized to obtain Laue back reflection patterns of microscopic areas with very short exposure time. A method is presented to fully automatically evaluate Laue patterns. The experimental setup and procedure are outlined to determine the orientations of a large number of contiguous grains, and consequently to enable orientation mapping. Preliminary experimental results are presented.

scholarly journals Shear-induced platelet receptor shedding by non-physiological high shear stress with short exposure time: Glycoprotein Ibα and glycoprotein VI

2015 ◽  
Vol 135 (4) ◽  
pp. 692-698 ◽  
Author(s):  
Zengsheng Chen ◽  
Nandan K. Mondal ◽  
Jun Ding ◽  
Jingya Gao ◽  
Bartley P. Griffith ◽  
...  
Keyword(s):  
Shear Stress ◽  
Exposure Time ◽  
Short Exposure ◽  
High Shear ◽  
High Shear Stress ◽  
Short Exposure Time ◽  
Glycoprotein Vi ◽  
Platelet Receptor ◽  
Receptor Shedding

scholarly journals A SURVEY OF X-RAY GENERATOR'S DYNAMIC RESPONSE TO SHORT EXPOSURE TIME BY MEANS OF X-RAY STROBOSCOPE

1981 ◽  
Vol 37 (2) ◽  
pp. 148-155
Author(s):  
MOTOI FUJINO ◽  
KAZUTOSHI MATSUMOTO ◽  
MISAO ARAKI ◽  
KAZUHIKO SAITO ◽  
MIDORI YAMASHITA ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Exposure Time ◽  
Short Exposure ◽  
Short Exposure Time ◽  
X Ray
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