Results 71 to 80 of about 42,763 (313)

Argentinean copper concentrates: structural aspects and thermal behaviour [PDF]

, 2013
In Argentina, there are many sources of copper concentrates. Some of them are currently in operation, while others are in the exploration stage. All copper concentrates produced are exported to other countries for copper refinement and to create various ...
Bazan Brizuela, Vanesa Lucia, Brandaleze, Elena, Santini, Leandro Matias, Sarquis, Pedro Edgardo   +3 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

Advanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin, Anila Antony, Hongtao Cai, Antonia Debevc, Ceyda Topal, Anne Linhardt, Alla Synytska, Leonid Ionov   +7 more
wiley   +1 more source

Variation of the Chemical Composition of Waste Cooking Oils upon Bentonite Filtration

Resources, 2019
The chemical composition and the color of samples of waste cooking oils (WCOs) were determined prior to and after filtration on two different pads of bentonite differing in particle size.
Alberto Mannu, Gina Vlahopoulou, Paolo Urgeghe, Monica Ferro, Alessandra Del Caro, Alessandro Taras, Sebastiano Garroni, Jonathan P. Rourke, Roberto Cabizza, Giacomo L. Petretto   +9 more
doaj   +1 more source

Biomass proximate analysis using thermogravimetry

Bioresource Technology, 2013
This work proposes a 25 min-last thermogravimetric method as a tool to determine biomass sample's proximate analysis data (moisture, ash, volatile matter and fixed carbon contents) just by direct measure of weight changes on each sample's TG chart. Compared with international standards commonly used to that aim, TG is a faster and easier to develop ...
García Fernández, Roberto, Pizarro García, Consuelo, Gutiérrez Lavín, Antonio, Bueno de Las Heras, Julio Luis   +3 more
openaire   +3 more sources

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

Advanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao, Christian Weinberger, Jakob Steube, Matthias Bauer, Martin Brehm, Michael Tiemann   +5 more
wiley   +1 more source

The influence of pyrolysis type on shale oil generation and its composition (upper layer of Aleksinac oil shale, Serbia) [PDF]

Journal of the Serbian Chemical Society, 2017
The influence of pyrolysis type on the shale oil generation and its composition was studied. Different methods such as Rock-Eval pyrolysis, thermogravimetric analysis (TGA) and pyrolysis in the open and closed systems were applied. Samples from the Upper
Gajica Gordana Đ., Šajnović Aleksandra M., Stojanović Ksenija A., Antonijević Milan D., Aleksić Nikoleta M., Jovančićević Branimir S.   +5 more
doaj   +1 more source

Recycling of tailings from the Barruecopardo tungsten deposit for the production of glass [PDF]

, 2016
Peer ReviewedPostprint (author's final ...
Alfonso Abella, María Pura, Castro López, David, García-Vallès, Maite, Martínez Manent, Salvador, Tarragó Aymerich, Mariona, Tomasa Guix, Oriol   +5 more
core   +2 more sources

3D‐Printed Sulfur‐Derived Polymers With Controlled Architectures for Lithium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
Rheology‐guided formulation design for direct ink writing enables the fabrication of 3D sulfur copolymer cathodes with controlled architectures for lithium‐sulfur batteries. The printed electrodes exhibit multiscale porosity and high sulfur utilization, delivering enhanced electrochemical performance compared to conventional cast electrodes.
Bin Ling, Haoran Wang, Pan Yang, Rishav Agrawal, Alex R. Neale, Laurence J. Hardwick, Tom Hasell, Esther García‐Tuñón   +7 more
wiley   +1 more source

Termogravimetria: um novo enfoque para a clássica determinação de cálcio em cascas de ovos Termogravimetry: a new approach for the classic determination of calcium in eggshells

Química Nova, 2009
The use of thermoanalytical data in sample preparation is described as a tool to catch the students' attention to some details that can simplify both the analysis and the analytical procedure.
Júnia G. Pereira, Fabiano Okumura, Luiz A. Ramos, Éder T. G. Cavalheiro, Joaquim A. Nóbrega   +4 more
doaj   +1 more source

Inactivating SARS‐CoV‐2 Virus with MOF‐Composites as Smart Face Masks

Advanced Functional Materials, EarlyView.
In situ preparation and functionalization of MOF@Cotton fabrics as smart face masks for the immobilization of proteins and inactivation viruses, such as SARS‐CoV‐2. Abstract The significant impact of the SARS‐CoV‐2 (COVID‐19) pandemic outbreak on people's lives has highlighted the urgent need for effective personal protective equipment.
Romy Ettlinger, Aamod V. Desai, Hau Lam Jody Cheong, Louise L. Major, Terry K. Smith, Aaron B. Naden, Jane Hilton, Catherine S. Adamson, A. Robert Armstrong, Russell E. Morris   +9 more
wiley   +1 more source