Results 81 to 90 of about 198,273 (309)

Settling velocity of clay with zinc oxide and aluminium oxide nanoparticles

open access: yesRomanian Journal of Ecology & Environmental Chemistry
Clays are ubiquitous earth minerals that are used globally in various fields such as in the ceramic, pharmaceutical, construction, chemical and drilling industries.
Naomi Amino Ogolo   +2 more
doaj   +1 more source

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, EarlyView.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

Characterization of Clay from Oza-Nogogo in Delta State, Nigeria for Potential Industrial uses

open access: yesArid Zone Journal of Engineering, Technology and Environment, 2018
The aim of this study was to characterize clay from Oza-Nogogo in Delta State for its physical and chemical composition in order to assess its potential industrial applications.
S. E. Uwadiae, V. Ekeleme
doaj  

Advances in the Development, Processing, and Application of Locally Sourced Clay-based Refractory Materials for Furnace Application in Nigeria

open access: yesScience, Engineering and Technology
Refractories are ceramic materials that are used in high-temperature applications, often above 1100oC. These materials find applications in reactors, kilns, ovens, and furnace linings.
Oryina Mbaadega Injor   +5 more
doaj   +1 more source

The impacts of biological invasions

open access: yesBiological Reviews, EarlyView.
ABSTRACT The Anthropocene is characterised by a continuous human‐mediated reshuffling of the distributions of species globally. Both intentional and unintentional introductions have resulted in numerous species being translocated beyond their native ranges, often leading to their establishment and subsequent spread – a process referred to as biological
Phillip J. Haubrock   +42 more
wiley   +1 more source

Reconstruction of Main Elements Economy of the Сherkaskul Population of the Late Bronze Age in the Forest-Steppe Tobol Region

open access: yesПоволжская археология, 2019
The paper summarizes the available and presents new materials for the reconstruction of economic and industrial activities of the Cherkaskul culture population on the territory of the forest-steppe Tobol river.
Kostomarova Yulia V.
doaj   +1 more source

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

Production of middle distillates through olefin oligomerization using ZSM‐5 as a catalyst

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract The global transportation sector relies heavily on gasoline (C5–C12) and diesel (C11–C24), which together account for approximately 60% of its energy needs. Driven by rapid industrialization and urbanization, diesel consumption is outpacing gasoline, with projections estimating global demand by 2035 at 27 million barrels per day for gasoline ...
Thembekile Hoyi   +3 more
wiley   +1 more source

Women of Color: Their Employment in the Private Sector [PDF]

open access: yes, 2003
This examination of the employment status of minority women or women of color relies primarily on the Equal Employment Opportunity Commission\u27s (EEOC) EEO-1 report.
Equal Employment Opportunity Commission, U.S.
core   +4 more sources

The Effects of Variable Capital Utilization on the Measurement and Properties of Sectoral Productivity: Some International Evidence [PDF]

open access: yes
This paper explores how accounting for variations in factor utilization rates alters the empirical characteristics of productivity residuals in the United States and Canada. Using data on 19 manufacturing industries, we study the behavior of productivity
Dorsey D. Farr, Marianne Baxter
core  

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