Results 71 to 80 of about 705,997 (241)

A Mesolithic settlement site at Howick, Northumberland: a preliminary report [PDF]

open access: yes, 2003
Excavations at a coastal site at Howick during 2000 and 2002 have revealed evidence for a substantial Mesolithic settlement and a Bronze Age cist cemetery. Twenty one radiocarbon determinations of the earlier eighth millennium BP (Cal.) indicate that the
Bailey, G.   +7 more
core  

Hardness and Tensile Properties of Prophylactic Knee Brace Produced from Cow Bone and Periwinkle Shell Composites

open access: yesInternational Journal of Engineering Materials and Manufacture, 2019
Application of reinforced aluminium scrap for the production of prophylactic knee brace (Pkb) particularly with agro-waste materials is rarely available.
Abdulkareem Sulaiman   +8 more
doaj   +1 more source

Development of Eco-Friendly Transformer Oil from Neem Seed Oil using Periwinkle Waste Shell as Catalyst

open access: yesEnvironmental and Climate Technologies, 2022
The urge for a sustainable and non-polluting industry has raised the need for a search for an alternative insulating fluid that could be used in transformers, because of the negative environmental effect of mineral-based insulating fluids. Natural esters
Oyelaran Olatunde Ajani   +3 more
doaj   +1 more source

Economics of trickling biological periwinkle shell filter for closed recirculating system [PDF]

open access: yes, 2010
Studies on the economics of trickling biological periwinkle shells filter for closed recirculating catfish system was carried out at the University of Science and Technology, Port Harcourt, Nigeria for 12 weeks.
Leton, T.G.   +3 more
core  

Effect of particle size and weight percentage variation on the mechanical properties of periwinkle shell reinforced polymer (epoxy resin) matrix composite

open access: yesInternational Journal of Applied Science and Engineering, 2022
Polymers are very interesting and useful materials that have many applications in various areas of engineering. Composites formed with these materials are known to exhibit outstanding mechanical, electrical, and thermal properties.
M. Udo   +5 more
semanticscholar   +1 more source

Latitudinal variation in the constitutive and inducible defences of a canopy‐forming rocky intertidal seaweed

open access: yesFunctional Ecology, Volume 39, Issue 12, Page 3718-3731, December 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract A long‐standing theory in biogeography is that stronger biotic interactions at lower latitudes select for better‐defended phenotypes. However, greater environmental variability at temperate latitudes may also shape defensive strategies by increasing temporal or local ...
Sean N. Ryan, Catherine M. Matassa
wiley   +1 more source

Market survey of the periwinkle Tympanotonus fuscatus in Rivers State: Sizes, prices, trade routes and exploitation levels [PDF]

open access: yes, 1985
Tympanotonus fuscatus was collected from 23 markets through Rivers State (Nigeria), a few in neighbouring states, and from an unexploited population at Buguma.
Deekae, S., Hart, A.I., Powell, C.B.
core  

Scheffe's Polynomial Optimisation of Laterite Concrete Incorporating Periwinkle Shells and Coir

open access: yesKSCE Journal of Civil Engineering, 2023
This is the author accepted manuscript. The final version is available from Springer via the DOI in this record ; Recent emphases on minimising the carbon footprint of concrete have focused on the use of non-conventional materials for the production of low-cost concrete.
Ocholuje S. Ogbo   +5 more
openaire   +2 more sources

A fully automated heart frequency logger for shelled invertebrates and associated data processing R package

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 12, Page 2797-2806, December 2025.
Abstract Measuring cardiac frequency provides a non‐invasive approach to quantifying sublethal stress responses of invertebrates to environmental stressors, such as heat stress. Existing cardiac monitoring methods rely on limited‐performance hardware, and data processing is still largely manual or semi‐automated.
Fernando P. Lima   +4 more
wiley   +1 more source

COMPRESSIVE STRENGTH OF CONCRETE MADE WITH MASHED PERIWINKLE SHELL AS FINE AGGREGATE FOR DISASTER MITIGATION

open access: yesFUDMA Journal of Sciences, 2022
This study presents the suitability of mashed periwinkle shell (MPS) as fine aggregate on concrete compressive strength for disaster mitigation. The effect of mashed periwinkle shell (MPS) at 0%, 10%, 20%, 50% and 100% replacement as fine aggregate was ...
Juliet N. Ugwu, Onyekachi Egwuagu
semanticscholar   +1 more source

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