Results 131 to 140 of about 43,435 (267)

Evaluation of cold joint effects on the microstructure and mechanical behavior of three‐dimensional printed concrete specimen

open access: yesStructural Concrete, EarlyView.
Abstract 3D concrete printing (3DCP) is an automated construction technique that uses an extrusion process to fabricate structures efficiently. However, the layer‐by‐layer process can create interlayer weaknesses, and interruptions during printing can result in cold joints, which can negatively affect the structural behavior.
Sung‐Jo Kim   +3 more
wiley   +1 more source

The operculate micro land snails from the Alycaeinae (Caenogastropoda, Cyclophoridae) in Laos, with description of new species. [PDF]

open access: yesZookeys
Jirapatrasilp P   +8 more
europepmc   +1 more source

The Oxalate-Limestone Reaction in the Activity Evaluation of Agricultural Limestones

open access: yesJournal of AOAC INTERNATIONAL, 1956
Colin W Whittaker   +1 more
openaire   +1 more source

Structural testing and analytical model of Reinforced Concrete (RC) prisms with 3D‐printed concrete permanent formwork under compressive loading

open access: yesStructural Concrete, EarlyView.
Abstract The implementation of traditional steel reinforcement in 3D concrete printed structures is a major challenge. Although 3D‐printed structures may be used as formwork, the knowledge about their structural contribution is limited. This research aims to experimentally evaluate the structural performance of reinforced concrete prisms with 3D ...
Luis M. de la Flor Juncal   +3 more
wiley   +1 more source

Integrated Alpha–Gamma Radiation Exposure From Natural Radionuclides in Cement and Gypsum Production: Implications for Occupational Lung Cancer Risk

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Natural radionuclides in cement and gypsum production materials pose significant risks of occupational radiation exposure that are not well documented in Iraqi Kurdistan. This study quantifies alpha and gamma radiation levels from naturally occurring radioactive materials, specifically 222Rn, 238U, 232Th, and 40K, in cement and gypsum samples ...
Adil M. Hussien   +4 more
wiley   +1 more source

Husbandry factors are associated with skin, gastrointestinal and ophthalmic disorders in leopard geckos (Eublepharis macularius)

open access: yesVeterinary Record, EarlyView.
Abstract Background Research into disorders in captive reptiles is notably sparse in the UK, despite the popularity of various species as pets. This study aimed to survey and investigate risk factors for disorders of leopard geckos in the UK. Methods Medical records for leopard geckos presenting at three veterinary practices between 2019 and 2023 were ...
Joshua Henley, Tom Dutton, Joanna Hedley
wiley   +1 more source

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