Results 31 to 40 of about 11,133,337 (383)

Transfer of Ethanol and Aroma Compounds by Varying Specific Process Parameters in the Thermal Dealcoholisation of Beer

open access: yesFoods, 2021
Dealcoholisation of beer has gained prominence over the last decade. A well-known procedure involves the combination of a rectification column for thermal dealcoholisation and a downstream column for aroma recovery.
Magdalena Müller   +2 more
doaj   +1 more source

Raw material optimization and stone tool engineering in the Early Stone Age of Olduvai Gorge (Tanzania)

open access: yesJournal of the Royal Society Interface, 2020
For more than 1.8 million years hominins at Olduvai Gorge were faced with a choice: whether to use lavas, quartzite or chert to produce stone tools. All are available locally and all are suitable for stone tool production.
Alastair J. M. Key   +2 more
semanticscholar   +1 more source

Effect of Grinding Fineness of Fly Ash on the Properties of Geopolymer Foam

open access: yesArchives of Metallurgy and Materials, 2017
Present paper deals with the development of geopolymer foam prepared from ground F class power station fly ash. The effect of the fly ash fineness on the rheology of the geopolymer paste and the foam properties have been investigated. The raw fly ash was
Szabó R.   +3 more
doaj   +1 more source

Milk Proteins—Their Biological Activities and Use in Cosmetics and Dermatology

open access: yesMolecules, 2021
Milk and colostrum have high biological potential, and due to their natural origin and non-toxicity, they have many uses in cosmetics and dermatology. Research is ongoing on their potential application in other fields of medicine, but there are still few
Kinga Kazimierska   +1 more
doaj   +1 more source

COMPARATIVE INVESTIGATION OF GLASS WASTE GRINDING IN VARIOUS MILLS

open access: yesRudarsko-geološko-naftni Zbornik, 2022
The present work deals with systematic grinding investigation and determination of grindability of container glass bottles. The systematic grinding tests were carried out in three different kinds of ball mills (a drum mill, a vibrating mill, and a ...
Ildikó Fóris, Gábor Mucsi
doaj  

Utilisation and Quality Management of Power Plant Fly Ash

open access: yesInternational Journal of Engineering and Management Sciences, 2019
Over the past decades, both the residential and industrial energy demand has increased due to the continuously growing consumption and production.
Mária Ambrus   +2 more
doaj   +1 more source

Optimization of Raw Material Inventory using Always Better Control (ABC) Analysis and Economic Order Quantity (EOQ) Method Approach in the Warehouse of a Bolt Manufacturing Factory in Indonesia

open access: yesInternational Journal of Innovative Science and Research Technology
There is a problem in the raw material procurement process at the Contractor Company, such as running out and excess stock of raw materials, as well as difficulties in determining how many raw materials to order that meet the company's economic value ...
Amalia Khusnul Irfani   +2 more
semanticscholar   +1 more source

Optimization of Phenolic in Extraction Kasturi Mango Leaves (Mangifera casturi Kosterm.) with Taguchi Method [PDF]

open access: yesBIO Web of Conferences
Kasturi mango (Mangifera casturi Kosterm.) is one of specific germplasm in South Kalimantan which in the category threatened with extinction. This plant has active metabolites such as phenolic groups which potentially to be bioactive.
Budiarni Kasandra   +8 more
doaj   +1 more source

Structural formation and leaching behavior of mechanically activated lignite fly ash based geopolymer

open access: yesJournal of Environmental Engineering and Landscape Management, 2016
Geopolymers are inorganic polymers which can be produced by the reaction of aluminium silicate oxides and alkaline silicates in an alkaline medium. Nowadays, silicate bearing wastes, such as fly ash or slag and other byproducts of power stations are very
Gábor Mucsi   +3 more
doaj   +1 more source

Genesis type of ore deposits indicated by trace elements of chalcopyrite

open access: yes地质科技通报, 2023
Trace elements of metallic minerals are important to constrain the formation processes and genetic types of ore deposits. Trace elements have been mainly focused on pyrite, magnetite, and sphalerite but have rarely been applied to chalcopyrite. To reveal
Qilin Wang   +5 more
doaj   +1 more source

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