Hybrid organic-inorganic materials based on cellulose matrix and silica particles are obtained from wastes of the local paper recycling mill and sugarcane mill as renewable secondary raw materials. The performance comparison of these hybrid materials made from secondary raw materials against the materials made from pure, raw sources is discussed. The Fourier transform infrared spectra show that cellulose features prevail even at 43 wt% silica nanoparticles in the hybrid materials. Such a high content of silica originated from sugarcane bagasse ash and hollow glass microspheres contributes to the high thermal stability of the final composites, as seen by thermogravimetric analysis with very low water absorption. This one-step approach of biobased hybrid materials represents an excellent way to produce high-performance materials with high content of inorganic nanoparticles for a wide variety of applications like energy efficient building material completely cement-free.
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http://dx.doi.org/10.1002/gch2.201700119 | DOI Listing |
Front Pharmacol
December 2024
College of Pharmacy, Anhui University of Chinese Medicine, Hefei, China.
Introduction: Pharmacological studies have shown that the rhizome of Atractylodes macrocephala Koidz. (Compositae), commonly known as atractylodes macrocephala rhizome (AMR), can modulate immunity. Nevertheless, its resources have been largely depleted, and the pharmacological activity of artificial AMR is relatively modest.
View Article and Find Full Text PDFLow Carbon Mater Green Constr
December 2024
Faculty of Technology, Fiber and Particle Engineering Research Unit, University of Oulu, PO Box 4300, 90014 Oulu, Finland.
Unlabelled: This study explores the use of Electric Arc Furnace (EAF) slag as a sustainable alternative raw material in cement clinker production. The research demonstrates the synthesis of ferrite-rich clinker using EAF slag, achieving a clinker composition of 47% alite, 32% ferrite, and 20% belite while replacing 20% of clinker raw materials i.e.
View Article and Find Full Text PDFData Brief
February 2025
Engineering Institute, Veracruzana University, Juan Pablo II Avenue, Mocambo Campus, Costa Verde, Boca Del Rio City, Veracruz 94292, México.
The data presented here are the result of microtremor measurements at 44 points in three different soil types classified according to their fundamental vibration frequencies, on the metropolitan area of Veracruz-Boca del Río, Mexico. These Data are raw and was obtained using a GÜRALP 6TD model broadband orthogonal triaxial seismometer with an integrated 24-bit digitizer with a minimum recording time of 30 min and a recording rate of 100 samples per second (sps). The microtremor records were used to construct the H/V spectral ratios using the method of Nakamura.
View Article and Find Full Text PDFContact Dermatitis
January 2025
Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Olsztyn, Poland.
Background: Henna is a powdered plant material traditionally used for medicinal and cosmetic purposes in Asia and the Mediterranean region. In North America and Europe, however, it is only used to colour the hair and decorate the body. This colouring process is due to the action of the secondary metabolite lawsone, which enables henna to produce orange to red shades of colour.
View Article and Find Full Text PDFWaste Manag
January 2025
Helmholtz-Zentrum Dresden-Rossendorf, Helmholtz-Institute Freiberg for Resource-Technology, Freiberg, Germany.
Printed circuit boards represent an extraordinarily challenging fraction for the recycling of waste electric and electronic equipment. Due to the closely interlinked structure of the composing materials, the selective recycling of copper and closely associated precious metals from this composite material is compromised by losses during mechanical pre-processing. This problem could partially be overcome by a better understanding of the influence of particle size and shape on the recovery of finely comminuted and well-liberated metal particles during mechanical separation.
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