Results 21 to 30 of about 205,830 (267)

Risk assessment and allocation in the contract for public works used in Saudi Arabia construction industry

open access: yesCogent Engineering, 2018
This article aims to propose a new model to assess the Saudi public contract for risk sharing through the investigation of the perceptions and proposals of owners and contractors in Saudi Arabia on the statement of the clauses of the contract.
Khaled Ashmawi   +4 more
doaj   +1 more source

Towards sensor array materials: can failure be delayed?

open access: yesScience and Technology of Advanced Materials, 2015
Further to prior development in enhancing structural health using smart materials, an innovative class of materials characterized by the ability to feel senses like humans, i.e. ‘nervous materials’, is discussed.
Samir Mekid   +3 more
doaj   +1 more source

Evaluating the application of the Optima® classifier as a secondary beneficiation stage at the Phola Coal Processing Plant [PDF]

open access: yesMATEC Web of Conferences
South Africa's coal mining operations frequently produce fine coal which is usually discarded due to the high costs of handling. Studies have shown that these fines possess acceptable market calorific values and low ash content.
Malekutu Karabo   +5 more
doaj   +1 more source

Avalanche effect for chemically modified dust mitigation from surfaces

open access: yesScientific Reports, 2021
Cost effective dust mitigation from surfaces is one of the challenges in various sectors. The reduction of dust adhesion on surfaces plays a vital role for dust mitigation from surfaces under the gravitational influence.
Johnny Ebaika Adukwu   +9 more
doaj   +1 more source

Minerals

open access: yesGrasas y Aceites, 1998
The possible changes in the mineral composition of food during frying could be the consequence of losses by leaching, or changes in concentrations caused by exchanges between the food and culinary fat of other compounds.
M. P. Vaquero
doaj   +1 more source

Solvent Extraction of Ni and Co from the Phosphoric Acid Leaching Solution of Laterite Ore by P204 and P507

open access: yesMetals, 2020
An alternative process of pre-roasting, phosphoric acid leaching followed by solvent extraction of a limonitic laterite ore was described in this work, with emphasis on the solvent extraction of Ni and Co from the phosphoric acid leaching solution by ...
Mingjun Rao   +8 more
doaj   +1 more source

Rheumatoid Arthritis and Coronary Artery Calcium Progression: A Case Cohort Analysis From ELSA‐Brasil

open access: yesArthritis Care &Research, EarlyView.
Objective To investigate the association between rheumatoid arthritis (RA) and coronary artery calcium (CAC) prevalence, incidence, and progression over four years in adults without prior cardiovascular disease. Methods A case‐cohort study within the Brazilian Longitudinal Study of Adult Health (ELSA‐Brasil) included 585 participants (86 patients with ...
Patrícia Fonseca Estrada   +7 more
wiley   +1 more source

Applicability of Earth Observation for Identifying Small-Scale Mining Footprints in a Wet Tropical Region

open access: yesRemote Sensing, 2017
The unpredictable climate in wet tropical regions along with the spatial resolution limitations of some satellite imageries make detecting and mapping artisanal and small-scale mining (ASM) challenging. The objective of this study was to test the utility
Celso M. Isidro   +3 more
doaj   +1 more source

Incorporation of Selenium into Sol–Gel‐Derived Bioactive Glass: Influence on Glass Structure, Bioactivity, and its Selective Cytotoxicity

open access: yesAdvanced Engineering Materials, EarlyView.
Selenium was incorporated into a sol–gel‐derived bioactive glass to enable sustained therapeutic ion release. The selenium‐containing glass preserved bioactivity while selectively inducing cytotoxicity in osteosarcoma cells and maintaining osteoblastic viability.
Breno Rocha Barrioni   +7 more
wiley   +1 more source

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