Results 71 to 80 of about 9,629,822 (348)

Mineralogical and Microstructural Characteristics of Two Dental Pulp Capping Materials [PDF]

Materials, 2019
This paper aims to investigate the composition, surface, and microstructural characteristics, and bioactivity of two commercially available pulp capping materials known as TheraCal LC and BIO MTA+. The materials were prepared as cylindrical samples and assessed by X-ray diffraction (XRD) and complex thermal analysis for mineralogical characterization ...
Georgeta Voicu, Andreea C. Didilescu, Andrei B. Stoian, Cristina Dumitriu, Maria Greabu, Mihai Andrei   +5 more
openaire   +2 more sources

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

Preliminary studies on hoof characteristics in Amiata donkey

Italian Journal of Animal Science, 2012
In this work the biometrical, physical and chemical characteristics of Amiata donkey hoof were studied. The Amiata donkey is a local endangered breed and derives from the homonym mountain in Tuscany.
Alessandro Giorgetti, Luisa Andrenelli, Roberto Tocci, Clara Sargentini   +3 more
doaj   +1 more source

Geomechanical characterization of lateritic hardpans from Bamendjou (West-Cameroon)

International Journal of Geo-Engineering, 2022
This study reports on the physical, mechanical, mineralogical and geochemical analysis carried out on four lateritic hardpan specimens from quarries in the Bamendjou area in the Western Region of Cameroon using common prescribed procedures.
Y. Ngueumdjo, V. H. Njuikom Djoumbi, V. Y. Katte, F. Ngapgue, A. S. L. Wouatong   +4 more
doaj   +1 more source

Analytical characterization of ancient mortars from the archaeological roman site of Pisões (Beja, Portugal) [PDF]

, 2019
The analytical characterization of mortar samples from the roman archaeological site of Pisões, located in Southern Portugal, were carried out by means of X-ray diffractometry (XRD), thermogravimetry (TGADTA), optical and electron scanning microscopy ...
Borsoi, G., Candeias, António, Menezes, P., Mirão, José, Santos Silva, A.   +4 more
core   +1 more source

Natural fluid-deposited graphite; mineralogical characteristics and mechanisms of formation [PDF]

American Journal of Science, 1998
This paper focuses on the similarities and differences between metamorphic graphite (formed in situ from organic matter) and fluid-deposited graphite. We discuss the formation of fluid-deposited graphite in terms of the source of carbon, the characteristics of the C-bearing fluids (the C-O-H system), the mechanisms of carbon ...
Luque Del Villar, Francisco Javier, Pasteris, Jill D., Wopenka, Brigitte, Rodas González, Magdalena, Fernández Barrenechea, José María   +4 more
openaire   +3 more sources

Injuries in deep time: interpreting competitive behaviours in extinct reptiles via palaeopathology

Biological Reviews, EarlyView.
ABSTRACT For over a century, palaeopathology has been used as a tool for understanding evolution, disease in past communities and populations, and to interpret behaviour of extinct taxa. Physical traumas in particular have frequently been the justification for interpretations about aggressive and even competitive behaviours in extinct taxa.
Maximilian Scott, Julia A. Gamble, Caleb Marshall Brown, Kirstin S. Brink   +3 more
wiley   +1 more source

Micro-CT and mercury intrusion porosimetry characterization of the fabric of roofing slate [PDF]

, 2013
The petrological fabric of roofing slate determines the main properties of the slate as a construction material, such as durability and waterproofing.
Cnudde, Veerle, Cárdenes Van den Eynde, Victor, De Boever, Wesley, Mateos, Felix J   +3 more
core   +1 more source

Application of Image Analysis for the Identification of Prehistoric Ceramic Production Technologies in the North Caucasus (Russia, Bronze/Iron Age) [PDF]

, 2019
The recent advances in microscopy and scanning techniques enabled the image analysis of archaeological objects in a high resolution. From the direct measurements in images, shapes and related parameters of the structural elements of interest can be ...
Milke, Ralf, Park, Ki Suk, Reinhold, Sabine, Rybacki, Erik   +3 more
core   +1 more source

Tunable amylopectin graft copolymers for flocculating and dewatering iron ore tailings

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Polyacrylamide (PAM), the standard flocculant for mining tailings, often produces turbid supernatants and poorly dewatered sediments, limiting water reuse and tailings densification. We synthesized amylopectin‐graft‐poly[(2‐methacryloyloxy)ethyl]trimethylammonium chloride (AP‐g‐PMETAC) copolymers with systematically varied graft frequency (N = 
Gustavo P. Zago, Reinaldo Giudici, João B. P. Soares   +2 more
wiley   +1 more source