Results 151 to 160 of about 69,267 (280)

Drill-string dynamics coupled with the drilling fluid dynamics

open access: yes, 2009
A drill-string is a slender structure that turns and drills into the rock in search of oil. A numerical model is developed using the Timoshenko beam theory and approximated by means of the Finite Element Method. The aim this work is to investigate the influence of the drilling fluid in the dynamics of the drill-string.
Ritto, T.G.   +2 more
openaire   +1 more source

Shaping research in marine functional connectivity for integrated and effective marine science and management

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1143-1180, June 2026.
ABSTRACT Effective knowledge of ecological connectivity at sea and at the land–sea interface is key to supporting global policy goals to conserve and restore ocean biodiversity and function. However, a persistent lack of commonality in terminology and understanding around the concept of connectivity in marine ecological studies hampers its integration ...
Audrey M. Darnaude   +20 more
wiley   +1 more source

Experimental Study on Compensation Function of 180 t Drill String Heave Compensation Device

open access: yesShiyou jixie, 2018
In order to verify whether the compensation performance of the 180 t main and passive combined drill string heave compensation device meets the design requirements, a compensation function test stand using reverse test method was developed.
Huang Ping   +4 more
doaj  

Theatres of Indirectness: Passive Aggression and Failure

open access: yes
Critical Quarterly, EarlyView.
Sara Crangle, Sam Ladkin
wiley   +1 more source

Reading hominin life history in fossil bones and teeth: methods to test hypotheses regarding its evolution

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1463-1478, June 2026.
ABSTRACT Human life history is derived compared to that of our closest living relatives, the great apes. It has been suggested that these derived traits are causally related to aspects of our ecology, social behaviour and cognitive abilities. However, resolving this requires that we know the evolutionary trajectory of our distinctive pattern of growth,
Paola Cerrito   +2 more
wiley   +1 more source

Biological Pesticides as Viable Alternative to Synthetic Pesticides for Sustainable Agriculture and Nutrition: A Systematic Review

open access: yesJournal of Sustainable Agriculture and Environment, Volume 5, Issue 2, June 2026.
ABSTRACT The overuse of synthetic pesticides in agriculture has raised significant environmental and health concerns. Biopesticides have emerged as viable, environmentally compatible alternatives. However, recent comprehensive reviews integrating all biopesticide categories and emphasizing their contribution to synthetic‐pesticide‐free and health‐safe ...
Molalign Assefa   +5 more
wiley   +1 more source

A Structured Review of Selenium Pollution in Global Aquatic Environments: Sources, Levels, and Co‐Pollutants

open access: yesEnvironmental Quality Management, Volume 35, Issue 4, Summer 2026.
ABSTRACT Despite its nutritional and industrial significance, selenium (Se) is considered a pollutant in aquatic environments owing to its toxicity at elevated concentrations, which potentially cause environmental degradation and adverse health effects in humans and local biota.
Jorge Enrique Ascencio‐Damian   +2 more
wiley   +1 more source

Predation on Artificial Caterpillars Varies With Vertical Stratification but Not Light Gradients in a Sugar Maple Temperate Forest

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 6, Page 559-569, June 2026.
Predation pressure varies vertically, with highest arthropod predation in the understory and highest bird predation in the canopy. Light availability differs across vertical strata, but predation patterns are more strongly influenced by height and forest structure than by light gradients.
Mahsa Hakimara, Emma Despland
wiley   +1 more source

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