MR scanning, tattoo inks, and risk of thermal burn: An experimental study of iron oxide and organic pigments

2017 ◽  
Vol 24 (2) ◽  
pp. 278-284 ◽  
Author(s):  
K. K. Alsing ◽  
H. H. Johannesen ◽  
R. Hvass Hansen ◽  
M. Dirks ◽  
O. Olsen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Iron Oxide ◽  
Thermal Burn ◽  
Organic Pigments ◽  
Tattoo Inks ◽  
Mr Scanning

Experimental study of the formation of the heart tube in the chick embryo

Development ◽  
1975 ◽  
Vol 33 (1) ◽  
pp. 1-11
Author(s):  
Carlos Argüello ◽  
María V. De La Cruz ◽  
Concepción Sánchez Gómez
Keyword(s):  
Experimental Study ◽  
Methylene Blue ◽  
Iron Oxide ◽  
Chick Embryo ◽  
Serial Section ◽  
Anterior Part ◽  
Time Lapse ◽  
Heart Tube

A study was made of the development of the heart tube beginning from Hamburger & Hamilton (1951) stage 8+ up to stage 12. We used labelling with particles of iron oxide followed with time-lapse cinemicrophotography, staining with methylene blue, serial section and cutting the embryo in two halves. Our results led to the conclusion that the tubular heart is formed by the addition of precardiac material into its posterior end, but in addition it is necessary to consider the fusion of the myocardium in a cephalic direction, starting with the fusion of both heart primordia at the rostral end. By this fusion the most anterior part of the heart up to stage 12 is formed.

scholarly journals Identification of organic pigments in tattoo inks and permanent make-up using laser desorption ionisation mass spectrometry

F1000Research ◽  
2018 ◽  
Vol 6 ◽  
pp. 2034 ◽  
Author(s):  
Markus Niederer ◽  
Urs Hauri ◽  
Lydia Kroll ◽  
Christopher Hohl
Keyword(s):  
Mass Spectrometry ◽  
Laser Desorption ◽  
Legal Compliance ◽  
Organic Pigments ◽  
Flight Mass Spectrometry ◽  
Consumer Safety ◽  
Detection And Identification ◽  
Direct Laser ◽  
Tattoo Inks ◽  
Permanent Make Up

Nowadays, about 12% of the European and 20% of the US population are tattooed. Rising concerns regarding consumer safety, led to legal restrictions on tattoo and permanent make-up (PMU) inks. Restrictions also include bans on certain colourants. Both ink types use organic pigments for colour-giving, plus inorganic pigments for white and black and colour tones. Pigments are only sparingly soluble in common solvents and occur as suspended particles in the ink matrix. Their detection and identification therefore pose a major challenge for laboratories involved in monitoring the legal compliance of tattoo inks and PMU. We overcame this challenge by developing a direct laser desorption ionisation time-of-flight mass spectrometry method, which included an easy sample clean up. The method proved to be capable of detecting and identifying organic pigments in almost all of the tested ink samples. Method validation and routine deployment during market surveys showed the method to be fit for purpose. Pigment screening of 396 tattoo inks and 55 PMU taken from the Swiss market between 2009 and 2017 lead to the following conclusions: Pigment variety is much greater in tattoo inks (18) than in PMU (10); four prohibited pigments (Pigment Green 7, Pigment Red 122, Pigment Violet 19 and 23) were found in both ink types; for PMU, these four pigments made up 12% of the pigment findings, compared to 32% for tattoo inks. Therefore, legal compliance of PMU was at a higher level. A comparison of pigments found with those declared on tattoo ink labels clearly showed that banned pigments are rarely declared, but rather masked by listing non present legal pigments and label forging; therefore, highlighting the urgency of widespread market controls.

Experimental Study on MSW Incineration Fly Ash Melting Characteristics

2014 ◽  
Vol 955-959 ◽  
pp. 2949-2952
Author(s):  
Jun Zhao ◽  
Shu Zhong Wang ◽  
Zhi Qiang Wu ◽  
Lin Chen ◽  
Hai Yu Meng
Keyword(s):  
Experimental Study ◽  
Iron Oxide ◽  
Fly Ash ◽  
Municipal Solid Waste ◽  
Melting Temperature ◽  
Calcium Oxide ◽  
Reducing Atmosphere ◽  
Msw Incineration ◽  
Melting Characteristics ◽  
Ash Melting

This paper studies the effects of calcium oxide and iron oxide in municipal solid waste (MSW) incineration fly ash on the melting temperature of fly ash by using different samples. In addition, this paper also studied the variation of fly ash melting temperature in oxidizing and reducing atmosphere by experiment.

scholarly journals Effect Of n-Amyl Alcohol/Biodiesel Blended Nano Additives on the Performance, Combustion and Emission Characteristics of CRDI Diesel Engine

2021 ◽  
Author(s):  
Prabhu Kishore Nutakki ◽  
Santhosh Kumar Gugulothu ◽  
Jatoth Ramachander ◽  
Mulugundam Sivasurya
Keyword(s):  
Experimental Study ◽  
Iron Oxide ◽  
Diesel Engine ◽  
Pollutant Emissions ◽  
Iron Oxide Nanoparticle ◽  
Ammonium Bromide ◽  
Nano Additives ◽  
And Performance ◽  
Ternary Fuel ◽  
Nanoparticle Additives

Abstract This paper deals with the study on the influence of the effects of iron oxide nanoparticle additives when added to ternary fuel (diesel + Mahua methyl ester + Pentanol) on the emission, combustion and performance characteristics of a four stroke, single cylinder, common rail direct injection diesel engine working at a constant speed and varying operating scenarios. Doping is done in various proportions to the nanoparticle additives with the help of a homogenizer and ultrasonicator where the cationic surfactant used is CTAB (cetyl trimethyl ammonium bromide). Iron oxide nanoparticles were used as additives in fuel in the dosages of 40 ppm, 80 ppm & 120 ppm respectively and TF (Ternary fuel) is obtained by mixing 10% pentanol, 20% Mahua and 70% diesel together is used for the experimental study. The experimental study revealed that while using the nanoparticle additives blended ternary fuel (i.e., TF80) the number of harmful pollutants like smoke (5.38%), HC (6.39%), carbon monoxide (10.24%) and NOx etc. has reduced to a considerable extent and there was a commendable improvement in the BTE by 8.8%. So, we can summarize that when ternary fuel and nano additives are blended together the combustion and performance of the engine was improved considerably and pollutant emissions were decreased.

scholarly journals Experimental study on the influence of iron oxide nanoparticles on rats after a single intratracheal administration

2020 ◽  
Vol 2020 (4) ◽  
pp. 251-260
Author(s):  
I. M. Trakhtenberg ◽  
◽  
N. M. Dmytrukha ◽  
T. K. Korolenko ◽  
L. A. Lehkostup ◽  
...  
Keyword(s):  
Experimental Study ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Oxide Nanoparticles ◽  
Intratracheal Administration
Sign in / Sign up

Export Citation Format

Share Document