Results 41 to 50 of about 2,781,888 (330)

Marangoni elasticity of flowing soap films [PDF]

open access: yesPhysical Review Fluids 2, 082001 (2017), 2016
We measure the Marangoni elasticity of a flowing soap film to be 22 dyne/cm irrespective of its width, thickness, flow speed, or the bulk soap concentration. We perform this measurement by generating an oblique shock in the soap film and measuring the shock angle, flow speed and thickness.
arxiv   +1 more source

The Effects of Cold Saponification on the Unsaponified Fatty Acid Composition and Sensory Perception of Commercial Natural Herbal Soaps

open access: yesMolecules, 2018
Saponification is the process in which triglycerides are combined with a strong base to form fatty acid metal salts during the soap-making process. The distribution of unsaturated and saturated fatty acid determines the hardness, aroma, cleansing, lather,
Natalia Prieto Vidal   +8 more
doaj   +1 more source

Sustainable Diesel from Pyrolysis of Unsaturated Fatty Acid Basic Soaps: The Effect of Temperature on Yield and Product Composition

open access: yesMolecules, 2022
The production of sustainable diesel without hydrogen addition remains a challenge for low-cost fuel production. In this work, the pyrolysis of unsaturated fatty acid (UFA) basic soaps was studied for the production sustainable diesel (bio-hydrocarbons).
Endar Puspawiningtiyas   +11 more
doaj   +1 more source

Manganese and Iron Catalysts in Alkyd Paints and Coatings

open access: yesInorganics, 2016
Many paint, ink and coating formulations contain alkyd-based resins which cure via autoxidation mechanisms. Whilst cobalt-soaps have been used for many decades, there is a continuing and accelerating desire by paint companies to develop alternatives for ...
Ronald Hage   +2 more
doaj   +1 more source

Variant Plateau Law in Atomically Thin Transition Metal Dichalcogenide Dome Networks [PDF]

open access: yes, 2023
Since its fundamental inception from soap bubbles, Plateau law has sparked extensive research in equilibrated states. However, most studies primarily relied on liquids, foams or cellular structures, whereas its applicability has yet to be explored in nano-scale solid films.
arxiv   +1 more source

ZnO/ionic liquid catalyzed biodiesel production from renewable and waste lipids as feedstocks [PDF]

open access: yes, 2019
A new protocol for biodiesel production is proposed, based on a binary ZnO/TBAI (TBAI = tetrabutylammonium iodide) catalytic system. Zinc oxide acts as a heterogeneous, bifunctional Lewis acid/base catalyst, while TBAI plays the role of phase transfer ...
Casiello, Michele   +8 more
core   +1 more source

Infrared chemical mapping of degradation products in cross-sections from paintings and painted objects

open access: yesHeritage Science, 2019
Paintings and painted objects are quite susceptible to degradation, as paint layers are usually composed of complex mixtures of materials that can participate in chemical degradation processes.
Eric J. Henderson   +3 more
doaj   +1 more source

Farmer Friendly Options for Sterilizing Farm Tools for the Control of Xanthomonas Wilt Disease of Banana

open access: yesFrontiers in Agronomy, 2021
The adoption of tool sterilization using either 3.5% sodium hypochlorite (household bleach) or fire, a core element of the cultural control packages for Xanthomonas wilt (XW) of banana has been poorly adopted hampering XW control in East and Central ...
Walter Ocimati   +2 more
doaj   +1 more source

Technical examination of Liu Kang’s Paris and Shanghai painting supports (1929–1937)

open access: yesHeritage Science, 2021
This article presents an overview of Liu Kang’s (1911–2004) canvas painting supports from his early artistic phases, Paris (1929–1932) and Shanghai (1932–1937).
Damian Lizun   +2 more
doaj   +1 more source

Modelling the Interaction between Carboxylic Acids and Zinc Oxide: Insight into Degradation of ZnO Pigments

open access: yesMolecules, 2022
Computational modelling applied to cultural heritage can assist the characterization of painting materials and help to understand their intrinsic and external degradation processes.
Jihan Lubani   +4 more
doaj   +1 more source

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