Biosilica slab photonic crystals as an alternative to cleanroom nanofabrication?

2020 ◽  
Vol 223 ◽  
pp. 261-277
Author(s):  
Johannes W. Goessling ◽  
Ana A. Santiago González ◽  
Vijaya Shanthi Paul Raj ◽  
Matt P. Ashworth ◽  
Schonna R. Manning ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Optical Materials ◽  
Environmentally Friendly ◽  
Cost Effective

We propose that optical materials produced by diatoms could serve as cost-effective and environmentally friendly alternatives to cleanroom nanofabrication.

Sustainable and environmentally friendly zinc coatings for protecting steel bridges in Europe

2021 ◽  
Author(s):  
M. C. van Leeuwen ◽  
P. M. Gangé ◽  
B. Duran ◽  
F. Prenger
Keyword(s):  
Corrosion Protection ◽  
Life Cycle Cost ◽  
Zinc Coating ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Steel Bridges ◽  
Metallic Zinc ◽  
Protection Measures ◽  
Paint Systems ◽  
Zinc Coatings

<p>Metallic zinc coatings are well established as cost-effective corrosion protection for steel bridges. The zinc coating acts first as barrier protection, isolating the base steel from corrosive elements, and secondly by cathodic protection, acting as a sacrificial anode to protect the steel should the coating be compromised. Bridge operators can be confronted by disproportional high maintenance costs for bridges in use as removal of (in)organic paint systems with hazardous and toxic compounds require expensive waste disposal and environmental protection measures. Metallic zinc coatings are recognized as environmentally friendly, sustainable, and low maintenance, providing the lowest life cycle cost corrosion protection. Various case studies with bridges protected with metallic zinc coatings in and outside Europe are illustrated.</p>

Fe2O3, a cost effective and environmentally friendly catalyst for the generation of NH3– a future fuel – using a new Al2O3-looping based technology

2017 ◽  
Vol 53 (77) ◽  
pp. 10664-10667 ◽  
Author(s):  
Ye Wu ◽  
Guodong Jiang ◽  
Hongbo Zhang ◽  
Zhao Sun ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Environmentally Friendly ◽  
Cost Effective ◽  
Chemical Looping

Fe2O3is found to be a cost-effective and environmentally friendly catalyst for chemical looping generation of NH3– a future fuel.

Dispersive Liquid—Liquid Microextraction Based on Solidification of Floating Organic Drop Combined with High Performance Liquid Chromatography for Analysis of 15 Phthalates in Water

2019 ◽  
Vol 102 (3) ◽  
pp. 942-951 ◽  
Author(s):  
Danni Yang ◽  
Yi Yang ◽  
Yongxin Li ◽  
Shuo Yin ◽  
Yaling Chen ◽  
...  
Keyword(s):  
River Water ◽  
Water Samples ◽  
High Performance ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Uv Detection ◽  
Established Method ◽  
River Water Samples ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Abstract Background: Consistent toxicological evidence indicate that phthalates can cause adverse effects on human health. The concern over phthalate pollution and exposure has been emphasized in recent years. Therefore, the sensitive, reliable, and rapid detection of phthalates in water is of great importance. Objective: In this study, dispersive liquid–liquid microextraction based on solidification of floating organic droplet (DLLME-SFO) combined with HPLC-UV detection was established and applied in the preconcentration and detection of 15 phthalates in drinking and river water samples. Methods: A mixture of acetonitrile (dispersant) and 1-dodecanol (extractant) was injected into water samples, which had been added with sodium chloride. The cloudy solution was formed by hand-shaking. After centrifugation, the sample solution was cooled in a refrigerator, and the solidified organic droplet was collected. It melted at room temperature and was injected into the HPLC system for analysis. The quantification was based on the working curves. Results: Under optimum conditions, this method showed good linearity in the range of 0.1–100 or 0.5–100 μg/L with correlation coefficients greater than 0.999. The method had the LODs ranging from 0.013 to 0.16 μg/L with the enrichment factors of 102–218. The recoveries of the method ranged from 86.8 to 119% with RSDs less than 12.6%. The interday and intraday RSDs were 6.35–13.5% and 3.00–13.7%, respectively. The established method has been successfully applied to the analysis of phthalates in drinking and river waters. Conclusions: The established method is rapid, sensitive, cost-effective, and environmentally friendly. It can be applied to the analysis of 15 phthalates in drinking and river water samples. Highlights: A method of DLLME-SFO combined with HPLC-UV detection has been established for the analysis of 15 phthalates in drinking and river water samples. The established method was rapid, sensitive, accurate, cost-effective, and environmentally friendly. The established method was successfully applied to the analysis of 15 phthalates in bottled, tap, and river water samples.

scholarly journals Photonic Crystals: Photocontrollable Photonic Crystals Based on Porous Silicon Filled with Photochromic Liquid Crystalline Mixture (Advanced Optical Materials 22/2020)

2020 ◽  
Vol 8 (22) ◽  
pp. 2070089
Author(s):  
Alexey Bobrovsky ◽  
Sergey Svyakhovskiy ◽  
Alexey Bogdanov ◽  
Valery Shibaev ◽  
Martin Cigl ◽  
...  
Keyword(s):  
Porous Silicon ◽  
Photonic Crystals ◽  
Optical Materials ◽  
Liquid Crystalline ◽  
Crystalline Mixture

Si–C linked oligo(ethylene glycol) layers in silicon-based photonic crystals: Optimization for implantable optical materials

Biomaterials ◽  
2007 ◽  
Vol 28 (20) ◽  
pp. 3055-3062 ◽  
Author(s):  
Kristopher A. Kilian ◽  
Till Böcking ◽  
Katharina Gaus ◽  
Michael Gal ◽  
J. Justin Gooding
Keyword(s):  
Photonic Crystals ◽  
Ethylene Glycol ◽  
Optical Materials ◽  
Silicon Based

Warming and cooling device using thermoelectric Peltier elements tested on male mice

2019 ◽  
Vol 54 (5) ◽  
pp. 443-451
Author(s):  
Nodir Madrahimov ◽  
Ruslan Natanov ◽  
Abdurasul Khalikov ◽  
Erin C Boyle ◽  
Danny Jonigk ◽  
...  
Keyword(s):  
Normal Sinus Rhythm ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Precise Control ◽  
Novel Device ◽  
Normal Sinus ◽  
Cardiac Procedures ◽  
Clinical Methods ◽  
Strong Linear Correlation ◽  
Clinical Conditions

Hypothermia is a treatment strategy for different clinical conditions and an essential part of cardiopulmonary bypass in complex cardiac procedures. Clinically, cooling patients is achieved via a mattress and heat exchanger integrated into a membrane oxygenator connected to a waterbed using a refrigerator system based on volatile and toxic liquids. Peltier elements are known as environmentally friendly thermoelectric generators that enable rapid warming and cooling. In this paper, we describe the construction of a novel device for rapid and precise control of mouse warming and cooling using thermoelectric Peltier elements. Six male BALB/c mice were subjected to deep hypothermia and were rewarmed under full physiological monitoring. After rewarming, all animals were observed for two hours, and pathology was evaluated in several organs. All animals tolerated the rapid cooling process well and remained active after rewarming. Temperature-relevant changes were seen via electrocardiography, with heart-rate patterns showing a strong linear correlation to body temperature. No myocardial ischaemia was seen. However, two animals experienced bradycardic atrial fibrillation which spontaneously converted to normal sinus rhythm during rewarming. No histological damage was seen in the heart, liver, kidney or lungs. Our device can effectively be used for heat shock and hypothermia studies in mice, and we foresee no obstacles for its application to other small rodents such as hamsters and young rats. In comparison to known experimental and clinical methods of hypothermia, our device is environmentally friendly, cost-effective and easy to handle, allowing precise control and maintenance of body temperatures ranging from 18℃ to 42℃.

Bio-green synthesis of Ni-doped tin oxide nanoparticles and its influence on gas sensing properties

RSC Advances ◽  
2015 ◽  
Vol 5 (89) ◽  
pp. 72849-72856 ◽  
Author(s):  
Ketan P. Gattu ◽  
Kalyani Ghule ◽  
Anil A. Kashale ◽  
V. B. Patil ◽  
D. M. Phase ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Tin Oxide ◽  
Gas Sensing ◽  
Low Cost ◽  
Environmentally Friendly ◽  
Cost Effective ◽  
Oxide Nanoparticles ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Tin Oxide Nanoparticles

Using a novel, cost-effective and environmentally friendly biosynthesis method, Ni-doped SnO2 nanoparticles have been synthesized. Gas sensing results suggest that the Ni-dopant is a promising additive to fabricate low cost SnO2 based sensors.

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