Results 81 to 90 of about 106,789 (300)

Performance of portable XRF and micro-XRF on carbonates

Geophysical Research Abstracts, 2016
Variations in elemental abundances in various carbonate archives offer a wealth of paleoenvironmental proxy information. State of the art portable handheld X-Ray Fluorescence (pXRF) and laboratory micro X-Ray Fluorescence (μXRF) instruments provide a relatively inexpensive and fast way of acquiring elemental composition data.
De Winter, Niels, Sinnesael, Matthias, Makarona, Christina, Claeys, Philippe   +3 more
openaire   +2 more sources

Effect of Temperature and Atmosphere on Agglomeration of Bed Particles in a Bubbling Fluidised Bed Burning Na‐Enriched Coal

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Agglomeration of bed materials during circulating fluidised bed (CFB) combustion or gasification of high‐alkali fuel is a practical challenge in industrial practice. This work investigates experimentally the effect of temperatures (700°C–900°C) and atmosphere (air equivalence ratios 1.61–0.53) on agglomeration in a lab‐scale bubbling fluidised
Zipeng Guo, Jianbo Li, Xiaofei Long, Quanhai Wang, Xiaofeng Lu   +4 more
wiley   +1 more source

Conjunto de metales procedente del poblado de la Edad del Bronce de L’arbocer (Font de la Figuera, Valencia)

Trabajos de Prehistoria, 2005
Presentamos un conjunto de piezas de metal, de cobre y bronce, halladas de manera casual en el poblado de la Edad del Bronce de L’Arbocer, en la Font de la Figuera, Valencia.
Pablo García Borja, María Jesús de Pedro Michó, Ángel Sánchez Molina   +2 more
doaj   +1 more source

Production and Characterization of Adsorbent from Oyster Shell (Crassostrea gigas) Using Physics and Chemical Activation with ZnCl2 and Its Application for Removal of Hexavalent Chromium

Elkawnie: Journal of Islamic Science and Technology, 2020
: Oyster shell waste has been investigated as a raw material for making adsorbents that will be activated. Physical activation uses temperatures of 500 ºC, 600 ºC, 700 ºC, 800 ºC, 900 ºC and chemical activation uses ZnCl2 with a concentration of 1 %, 5 %,
Lia Handayani, Azwar Thaib, Nurhayati Nurhayati, Yayuk Astuti, Adi Darmawan   +4 more
doaj   +1 more source

Potassium Migration of Chestnut Shell Ashes Under Oxidizing Atmosphere and Its Modification Mechanism by Additives

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Biomass energy plays a critical role in alleviating environmental pressures. However, its relatively high content of alkali metals (especially for potassium) would cause ash‐related issues during combustion. To mitigate these issues, the potassium migration behaviors during chestnut shell (CS) conversion and the modification mechanisms of ...
Meijie Zhou, Weijie Guo, Fenghai Li, Xuefei Liu, Ziqiang Yang, Mingjie Ma, Yitian Fang   +6 more
wiley   +1 more source

Optical properties, inclusions, and chemical composition of blue corundum from the Stazh-2 deposit, South-Western Pamir

Известия высших учебных заведений: Геология и разведка
Background. The Stazh-2 deposit of blue corundum is a representative object in the post- Soviet territory with prospects for mining of jewelry crystal raw materials. In terms of its geological position, the deposit can be classified as a contact-reaction
A. K. Litvinenko, D. B. Vandanova, O. A. Shilova, S. B. Pakhomova   +3 more
doaj   +1 more source

Broad-line type Ic Supernova SN 2014ad

, 2018
We present optical and ultraviolet photometry, and low resolution optical spectroscopy of the broad-line type Ic supernova SN 2014ad in the galaxy PGC 37625 (Mrk 1309), covering the evolution of the supernova during $-$5 to +87 d with respect to the date
Anupama, G. C., Chakradhari, N. K., Meada, Keiichi, Nomoto, Kenichi, Sahu, D. K., Srivastav, S., Tanaka, Masaomi   +6 more
core   +1 more source

Integrating agro‐residue valorization and clean hydrogen production: coconut fiber‐based catalysts for NaBH4 hydrolysis

Biofuels, Bioproducts and Biorefining, EarlyView.
Abstract A novel phosphoric acid‐treated green coconut fiber (GCF‐C) was developed as a catalyst for hydrogen production from the hydrolysis of sodium borohydride (NaBH4). Characterization techniques confirmed structural modifications, including X‐ray diffraction, scanning electron microscopy, X‐ray fluorescence, Fourier transform infrared, and ...
Isabelly Silveira Freitas, Francisco Izaias da Silva Aires, Dayana Nascimento Dari, Jacob Tchiyeke António Kandjila, Maurício Quintas Salamba, Diego Lomonaco, Monalisa Moura de Oliveira, Pierre Basílio Almeida Fechine, Rafael Leandro Fernandes Melo, Alan Silva de Menezes, Marcos Carlos de Mattos, Leonardo Farias Serafim, Maria Cristiane Martins de Souza, Ada Amelia Sanders Lopes, John Herbert da Silva Felix, Eveline de Abreu Menezes, José Cleiton Sousa dos Santos   +16 more
wiley   +1 more source

Protein hydrolysates in cell culture: Toward multi‐omics characterization

Biotechnology Progress, EarlyView.
While protein hydrolysates are widely used in cell culture applications, they remain undefined and variable products. Multi‐omic characterization evaluating composition and function can transition hydrolysates toward semi‐defined media components.
Michelle Combe, Brandon M. Wrage, Angel Varela‐Rohena, Stanislav Sokolenko   +3 more
wiley   +1 more source

Characteristics and Mineral Content of Sediment at Muara Pulau Kayu (MPK) of Southwest Aceh District

Aceh International Journal of Science and Technology, 2018
Study on sediment characteristics and mineral content at Muara Pulau Kayu (MPK) of Southwest Aceh District was conducted to find a general description of grain size and mineral content regarding to hydro-oceanographic process.
Syahrul Purnawan, Zulkarnain Jalil, Chairul Akmal, Yopi Ilhamsyah   +3 more
doaj   +1 more source