Results 81 to 90 of about 72,732 (289)

Mineralogical appraisal and beneficiation tests on some industrial minerals from Zambia [PDF]

open access: yes, 1991
In March 1990, a visit to Zambia was made by D A Briggs of the Mineralogy and Petrology Group on behalf of the British Geological Survey/Overseas Development Administration project "Minerals for Development". The visit, which was described in Technical
Briggs, D.A., Mitchell, C.J.
core  

Cave Palaeolithic of the Ural Mountains – a review

open access: yesBoreas, EarlyView.
The Ural Mountains are of fundamental importance for studying early human migrations along the geographical limits between Europe and Asia. Geological processes and past climates gave rise to numerous caves, mostly in Palaeozoic carbonate formations.
Jiri Chlachula
wiley   +1 more source

Thermal, rheological and morphological properties of poly (Lactic Acid) (PLA) and talc composites

open access: yesPolímeros, 2014
In this study, composites based on poly(lactic acid) (PLA)/talc were prepared at different compositions by melt mixing in a twin screw extruder. The effect of a nucleating agent, talc, on the crystallization behavior, rheological and morphological ...
Talita Ferreira Cipriano   +5 more
doaj   +1 more source

西南日本の熱変成超苦鉄質岩体中のかんらん石と輝石の組成変化に関する覚書 [PDF]

open access: yes, 2010
This short article presents some diagrams showing the compositional variations of primary and metamorphic olivine, orthopyroxene and clinopyroxene in peridotites and serpentinites from thermally metamorphosed ultramafic complexes in SW Japan. In contrast
Nozaka, Toshio
core   +1 more source

The cost of the consumer revolution: Prices, material living standards, and real inequality in Amsterdam (1630‒1805)

open access: yesThe Economic History Review, EarlyView.
Abstract This article measures the cost of the early modern consumer revolution through a quantitative analysis of product and process innovations in Amsterdam and examines their variegated social impact in two distinct datasets of probate inventories.
Bas Spliet, Anne E. C. McCants
wiley   +1 more source

CONTROL OF STICKY CONTAMINANTS WITH CATIONIC TALC IN DEINKED PULP

open access: yesBioResources, 2011
In this study a cationic talc was applied to deinked pulp for control of sticky contaminants. Effects of the cationic talc on stickies and dissolved and colloid substances were investigated and compared with those of a conventional talc.
Yang Gao   +4 more
doaj  

Improved mycelia and polysaccharide production of Grifola frondosa by controlling morphology with microparticle Talc

open access: yesMicrobial Cell Factories, 2018
Background Mushroom showed pellet, clump and/or filamentous mycelial morphologies during submerged fermentation. Addition of microparticles including Talc (magnesium silicate), aluminum oxide and titanium oxide could control mycelial morphologies to ...
Ting-Lei Tao   +8 more
doaj   +1 more source

Material properties of nanoclay PVC composites [PDF]

open access: yes, 2009
Nanocomposites of poly(vinyl chloride) have been prepared using both hectorite- and bentonite-based organically-modified clays. The organic modification used is tallow-triethanol-ammonium ion.
Awad, Walid   +7 more
core   +1 more source

The hidden science of haptics: A pedagogical review of tactile evaluation in cosmetics

open access: yesInternational Journal of Cosmetic Science, EarlyView.
This review explores the physiological basis of tactile perception and critically examines classical and emerging sensory methods used in cosmetics, advocating for broader methodological integration and recognition of sensory analysis in the field. Abstract Sensory analysis is a cornerstone of cosmetic development, yet remains underrepresented in peer ...
Morgane Postec   +2 more
wiley   +1 more source

Interplay Between Mechanical and Petrochemical Models on the Fluid Extraction From Subduction Zones

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT The breakdown of hydrous minerals during subduction results in a densification of the rocks, producing volume changes that can trigger fluid pressure fluctuations and hydrofracturing. These volume changes are controlled by the Clapeyron slope of the reaction and are quantified here using a macroscopic framework that integrates a zero ...
Thorsten Andreas Markmann   +1 more
wiley   +1 more source

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