Effects of titanium dioxide nano-particles on growth and some histological parameters of zebrafish (Danio rerio) after a long-term exposure

2011 ◽  
Vol 101 (3-4) ◽  
pp. 493-499 ◽  
Author(s):  
Jinyuan Chen ◽  
Xia Dong ◽  
Yuanyuan Xin ◽  
Meirong Zhao
Keyword(s):  
Titanium Dioxide ◽  
Danio Rerio ◽  
Nano Particles

scholarly journals Photocatalytic Activity Enhancement of Low-pressure Cold-Sprayed TiO2 Coatings Induced by Long-term Water Vapor Exposure

2021 ◽  
Author(s):  
Seremak Wioletta ◽  
Baszczuk Agnieszka ◽  
Jasiorski Marek ◽  
Gibas Anna ◽  
Winnicki Marcin
Keyword(s):  
Titanium Dioxide ◽  
Photocatalytic Activity ◽  
Water Vapor ◽  
Sol Gel ◽  
Low Pressure ◽  
Oxygen Depletion ◽  
Amorphous Structure ◽  
Industrial Applications ◽  
Additional Parameter

AbstractThis work shows that the titanium dioxide coatings obtained by low-pressure cold gas spraying with the use of the sol–gel amorphous TiO2 powder are characterized by photocatalytic activity despite their partial amorphous content. Moreover, the research outcome suggests that the decomposition rate of organic pollutants is enhanced after long-term exposure to moisture. The condensation humidity test is not detrimental to the continuity and integrity of the coating, but the phase composition of coatings changes—with the exposure to water vapor, the portion of the amorphous phase crystallizes into brookite. The mechanism responsible for the conversion of amorphous TiO2 into brookite is attributed to the water-driven dissolution and reprecipitation of TiO6 octahedra. It has been shown that an additional parameter necessary for the stabilization of the brookite is the oxygen depletion of the amorphous structure of titanium dioxide. Considering the results presented in this paper and the advantages of a portable, low-pressure cold spray system for industrial applications, it is expected that TiO2 coatings produced from a sol–gel feedstock powder can be further developed and tested as efficient photocatalysts.

Alterations in retinoid status after long-term exposure to PBDEs in zebrafish (Danio rerio)

2012 ◽  
Vol 120-121 ◽  
pp. 11-18 ◽  
Author(s):  
Lianguo Chen ◽  
Chenyan Hu ◽  
Changjiang Huang ◽  
Qiangwei Wang ◽  
Xiaofang Wang ◽  
...  
Keyword(s):  
Danio Rerio

Optimization of surface roughness on slitting knives by titanium dioxide nano particles as an additive in grinding lubricant

2018 ◽  
Vol 96 (9-12) ◽  
pp. 4111-4121 ◽  
Author(s):  
Gilberto E. García ◽  
Federico Trigos ◽  
Demófilo Maldonado-Cortés ◽  
Laura Peña-Parás
Keyword(s):  
Surface Roughness ◽  
Titanium Dioxide ◽  
Nano Particles

Sex specific response in cholesterol level in zebrafish ( Danio rerio ) after long-term exposure of difenoconazole

2015 ◽  
Vol 197 ◽  
pp. 278-286 ◽  
Author(s):  
Xiyan Mu ◽  
Kai Wang ◽  
Tingting Chai ◽  
Lizhen Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Cholesterol Level ◽  
Danio Rerio ◽  
Specific Response

scholarly journals Nitrite Toxicity to Danio rerio: Effects of Subchronic Exposure on Fish Growth

2008 ◽  
Vol 77 (3) ◽  
pp. 455-460 ◽  
Author(s):  
E. Voslářová ◽  
V. Pištěková ◽  
Z. Svobodová ◽  
I. Bedáňová
Keyword(s):  
Danio Rerio ◽  
Significant Inhibition ◽  
Fish Growth ◽  
Long Term Effects ◽  
Exponential Relationship ◽  
Subchronic Exposure ◽  
Control Growth ◽  
Nitrite Toxicity ◽  
Fish Weight

The aim of this study was to investigate the long-term effects of subchronic exposure to sublethal levels of nitrite, ranging from 15 to 130 mg l-1 NO2-, on growth in aquarium fish Danio rerio. The juvenile growth test according to OECD 215 was used in the experiments. Fish weight was measured at the beginning of the experiment and then using the same method, fish weight was observed 28 days after fish stocking. Compared to the control, growth suppression was detected from the concentration of 73 mg l-1 NO2- (P < 0.05) and a significant inhibition of fish body growth was shown from 130 mg l-1 NO2- (P < 0.01). An exponential relationship between nitrite concentrations and specific growth rate (R2 = 0.896) was detected.

Effect of Titanium Dioxide (Tio2) Nano-Fluid on Performance and Emission Features of a Diesel Engine Operated on Aphanizomenon Flos Biodiesel-Diesel Blend

2019 ◽  
Vol 969 ◽  
pp. 421-426
Author(s):  
G. Jayabalaji ◽  
P. Shanmughasundaram
Keyword(s):  
Titanium Dioxide ◽  
Diesel Engine ◽  
Nano Particles ◽  
Nano Particle ◽  
No Emission ◽  
Single Cylinder ◽  
Performance And Emission ◽  
Nano Fluid ◽  
Ci Engine

In this present investigation titanium dioxide (TiO2) nano-fluid was blended with aphanizomenon flos (AF) biodiesel (20%)-diesel (80%) blend. Different percentages of TiO2 such as 5%, 10%, and 15%, was added with AF-D (aphanizomenon flos-diesel) blends. The blends are named as AFD-5TiO2, AFD-10TiO2, and AFD-15TiO2. The performance and emission parameters of a single cylinder CI engine fueled with AFD-TiO2 blends were experimentally investigated. The results reveal that, with the use of TiO2 nano particles, AFD-10TiO2 blend gave optimum results. BSFC decreased by about 5% and BTE increased by about 2% with the addition of TiO2 nano-particle as a catalyst. The tailpipe emissions such as CO, HC, smoke reduced drastically, but the NO emission increased, with the use of TiO2 nano-particles.

scholarly journals Behavior of PMMA Denture Base Materials Containing Titanium Dioxide Nanoparticles: A Literature Review

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
Mohammed M. Gad ◽  
Reem Abualsaud
Keyword(s):  
Titanium Dioxide ◽  
Clinical Performance ◽  
Titanium Dioxide Nanoparticles ◽  
Antimicrobial Effect ◽  
Research Progress ◽  
Resin Matrix ◽  
Denture Base ◽  
Base Materials ◽  
Pmma Resin

Titanium dioxide nanoparticles (TiO2NP) have gained interest in the dental field because of their multiple uses in addition to their antimicrobial effect. One of the applications in dentistry involves the incorporation into poly methyl methacrylate (PMMA) resin. However, there is a lack of evidence on their effects on the behavior of the resulting nanocomposite. Therefore, the present review aims to screen literatures for data related to PMMA/TiO2nanocomposite to figure out the properties of TiO2nanoparticles, methods of addition, interaction with PMMA resin matrix, and finally the addition effects on the properties of introduced nanocomposite and evidence on its clinical performance. Regardless of the latest research progress of PMMA/TiO2nanocomposite, the questionable properties of final nanocomposite and the lack of long-term clinical evidence addressing their performance restrict their wide clinical use. A conclusive connection between nanoparticle size or addition method and nanocomposite properties could not be established.

scholarly journals Sunscreens with Titanium Dioxide (TiO2) Nano-Particles: A Societal Experiment

NanoEthics ◽  
2010 ◽  
Vol 4 (2) ◽  
pp. 103-113 ◽  
Author(s):  
Johannes F. Jacobs ◽  
Ibo van de Poel ◽  
Patricia Osseweijer
Keyword(s):  
Titanium Dioxide ◽  
Nano Particles
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