Results 61 to 70 of about 17,897 (255)

Deepening inside the pictorial layers of Etruscan sarcophagus of Hasti Afunei: An innovative micro-sampling technique for Raman/SERS analyses [PDF]

open access: yes, 2019
The Hasti Afunei sarcophagus is a large Etruscan urn, made up of two chalky alabaster monoliths. Dated from the last quarter of the third century BC, it was found in 1826 in the small town of Chiusi (Tuscany- Il Colle place) by a landowner, Pietro Bonci ...
Bianco, Armandodoriano   +7 more
core   +1 more source

Chemical engineering as an essential element of industrial biotechnology in Mexico: New aims in research and university education

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract On the centennial of higher education in Chemical Engineering in Mexico, it is pertinent to revisit the key stages that have contributed to its consolidation as a vital discipline for the nation's scientific and technological advancement. Although the initial mission of chemical engineering education was primarily oriented toward the training ...
Agustín López Munguía   +3 more
wiley   +1 more source

Estudi de l'efecte de diversos factors sobre el contingut de vitamina C del suc de taronja [PDF]

open access: yes, 2011
El contingut de vitamina C en sucs de fruita es pot determinar mitjançant una volumetria redox amb el colorant 2,6-diclorofenol indofenol. Aquesta pràctica de laboratori es pot transformar en un petit treball d'investigació sobre la influència que tenen ...
Hernández Santadaría, José Ángel
core   +2 more sources

On the Planarity of Heterocyclic Bay‐Substituted Perylenediimides: Insight into the Fluorescent Photoinduced Electron Transfer Sensing Framework

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
Near‐infrared fluorescent pH indicators based on perylenediimide were constructed in a modular receptor–spacer–fluorophore–spacer–receptor format with heterocyclic amino moieties at the bay positions. Counterintuitively, the dibrominated intermediate with two heavy atoms is more emissive than the heterocyclic compounds.
Luke Camenzuli   +4 more
wiley   +1 more source

Shell and glass beads from the tombs of Kindoki, Mbanza Nsundi, Lower Congo [PDF]

open access: yes, 2014
The ancient Kingdom of Kongo originated in Central Africa in the 14th century. In the 15th century, the Portuguese organized tight contacts with the Bakongo.
Bostoen, Koen   +5 more
core   +1 more source

Elimination de colorants de l'industrie textile par des sciures de bois [PDF]

open access: yes, 1990
L'élimination de la couleur de rejets de petites industries textiles peut être réalisée à l'aide de sciures d'essences de bois diverses dont le choix est fait après étude de leur relargage dans l'eau (couleur et DCO); les sciures de chêne, de châtaignier,
Dusart, O.   +3 more
core   +1 more source

Edible coatings in food: Specific materials and their impact on techno‐functional properties and sustainable applications

open access: yesFood Biomacromolecules, EarlyView.
Abstract Edible coatings have emerged as a significant advancement in the food industry. This review explains the different materials, methods, and applications of edible coatings, with a special focus on the integration of nanotechnology and its contribution to the circular economy.
Shankar Senthilkumar   +4 more
wiley   +1 more source

Isolation of Antibacterial, Nitrosylmyoglobin Forming Lactic Acid Bacteria and Their Potential Use in Meat Processing

open access: yesFrontiers in Microbiology, 2020
The use of nitrite as a colorant and preservative in meat processing is associated with health risks. This study aimed to isolate nitrite-substituting lactic acid bacteria for use as natural biological colorants and preservatives.
Yinglian Zhu, Qingli Yang
doaj   +1 more source

Colour, health and wellbeing: the hidden qualities and properties of natural dyes [PDF]

open access: yes, 2013
This paper addresses the questions: Is it feasible that the chemicals present in the natural dyes of both plants and insects which in the past, man has exploited for their colour, could exhibit other properties?
Wells, Kate
core   +1 more source

Nonthermal Food Processing Technologies: A Comprehensive Review

open access: yesFuture Postharvest and Food, EarlyView.
The graphical abstract illustrates the shift from traditional thermal food preservation methods to advanced nonthermal technologies. Traditional methods, represented by heating, often compromise the nutritional and sensory quality of foods. In contrast, nonthermal approaches such as high‐pressure processing (HPP), pulsed electric field (PEF ...
Ashok Kumar Yadav   +5 more
wiley   +1 more source

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