Results 151 to 160 of about 127,520 (303)

3D Printing PLA Waste to Produce Ceramic Based Particulate Reinforced Composite Using Abundant Silica-Sand: Mechanical Properties Characterization. [PDF]

Polymers (Basel), 2020
Ahmed W, Siraj S, Al-Marzouqi AH.
europepmc   +1 more source

Silica Quartz Characteristics from Local Silica Sand on Compressive Strength of Mortar

Civil Engineering Journal
Many minerals, including quartz sand, granite, and feldspar, contain silica (SiO2), a substance that performs the same function as quartz. Silicate (SiO2), the primary mineral found in silica sand, can be added to concrete mixtures to boost strength.
. Mansyur, M. Tumpu, Parea R. Rangan
openaire   +1 more source

The Earliest Feathers from the Lower Cretaceous Dabeigou Formation of North Hebei: Implications for the Early Evolution of the Jehol Biota

Integrative Zoology, EarlyView.
This study reports two isolated feather fossils from the Lower Cretaceous Dabeigou Formation in northeastern China. Morphological analyses identified them as the earliest known feathered theropods (potentially including avian) in the Jehol Biota. This finding reveals a complex ecosystem at the dawn of the Jehol Biota, bridging the temporal and faunal ...
Qian Wu, Qian‐Nan Zhang, Dang‐Peng Xi   +2 more
wiley   +1 more source

Bridging the Late Antique Gap in Northwest Arabia: New Archaeological Evidence on the Occupation of Wādī al‐Qurā (al‐ʿUlā [AlUla], Saudi Arabia) Between the Third and Seventh Centuries CE

Arabian Archaeology and Epigraphy, EarlyView.
ABSTRACT In 2019, the Dadan Archaeological Project (CNRS/RCU/AFALULA) identified a Late Antique village 1 km south of ancient Dadan in the al‐ʿUlā valley (northwest Saudi Arabia). Three excavation seasons at this site (2021–2023) have uncovered a massive building constructed in the late third or early fourth cent.
Jérôme Rohmer, Abdulrahman Alsuhaibani, Charlène Bouchaud, Elora Chambraud, Vladimir Dabrowski, Hatem Djerbi, Fabien Lesguer, Hervé Monchot, Paul Picavet, Louise Purdue, Bertrand Riba, Shadi Shabo   +11 more
wiley   +1 more source

Supplementing beef cattle diets with brown seaweed affects coprophagous beetles' dung use

Agricultural and Forest Entomology, EarlyView.
Supplementing beef cattle diets with brown seaweed reduced the attractiveness of dung for a common dung beetle (Onthophagus nuchicornis). Dietary supplementation with brown seaweed appeared to reduce the proportion of major males in the F1 generation.
Samantha Bennett, Rhea Lumactud, Ghader Manafiazar, Paul Manning   +3 more
wiley   +1 more source

Evaluation of Adulticidal Clorine with Black Sand, White Sand and Silica Sand for Decline Coliform Bacteria

JURNAL KESEHATAN LINGKUNGAN
Introduction: The World Health Organization estimates that approximately 2.2 billion individuals globally lack access to safely managed drinking water supplies. The development of chlorine diffusers represents a promising intervention to address bacterial contamination, particularly coliform bacteria in water sources.
Rezania Asyfiradayati, null Eni Budiyati, null Mitoriana Porusia, null Muhammad Rivandi Athaya, null Afnan Zain Muzakki, null Jenita Berlian Nindyasari, null Siti Rohana Mohd Yatim   +6 more
openaire   +1 more source

Randomized, single‐centre, double‐blinded repeated dose investigation of safety and tolerability of ocular administrations of a novel silica eye drop product in healthy volunteers

Acta Ophthalmologica, EarlyView.
Abstract Purpose Managing ocular diseases often requires frequent eye drop administration, which can challenge patient compliance. A long‐acting eye drop technology using an amorphous synthetic silica composite was developed to address this. Our study aimed to assess the safety and tolerability of the Silica Eye Drop platform in healthy volunteers over
Aleksandra Poluianova, Marceline N. Akieh‐Pirkanniemi, Arto Hartikainen, Hanna Arstila, Kai Kaarniranta, Lasse Leino   +5 more
wiley   +1 more source

The Material Basis of 18th‐Century Meissen Porcelain

Archaeometry, EarlyView.
ABSTRACT In the summer of 1708, the quest for making hard‐paste porcelain from Saxonian clay and other mineral resources succeeded. This was achieved by applying as its essential ingredient newly discovered pure kaolin from Heidelsberg near Aue, western Saxon Ore Mountains.
Robert B. Heimann
wiley   +1 more source

Application of Multi‐Method Dating for Understanding the Gravettian North of Moravia, Central Europe

Archaeometry, EarlyView.
ABSTRACT This article presents the results of integrating three methods to assess the age of the Upper Palaeolithic site of Pietraszyn 11 (SW Poland), close to the Moravian Gate. Sediment chronology determined using optically stimulated luminescence produced promising, yet ambiguous results (51.0 ± 3.7 to 20.3 ± 0.7 ka).
A. Wiśniewski, B. Bujalska, D. Popović, M. Baca, K. Zarzecka‐Szubińska, A. Lemanik, M. Hein, S. Talamo, P. Moska, H. Fewlass, D. Tokarz, Z. Jary, B. Przybylski, D. Bobak, M. Połtowicz‐Bobak, K. Wertz, A. Nadachowski   +16 more
wiley   +1 more source

A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis

Archaeometry, EarlyView.
ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean, Michela Spataro, Jonathan Taylor, Gianfranco Ulian, Giovanni Valdré, Gabriele Giacosa, Eleonora Mariani, Nicolò Marchetti   +7 more
wiley   +1 more source