Results 41 to 50 of about 18,968 (195)

Sustainable Hydrogen Production by Glycerol and Monosaccharides Catalytic Acceptorless Dehydrogenation (AD) in Homogeneous Phase

open access: yesChemSusChem, Volume 18, Issue 6, March 15, 2025.
Sustainable hydrogen production can be obtained from hydogen‐rich biomass‐derived organic molecules through Acceptorless Dehydrogenation (AD) reactions. Glycerol and sugars are available in large quantities from industry and can be successfully used as substrates in AD protocols, in the presence of tailored, selective, easily tunable and thermally ...
Sylwia Kostera, Luca Gonsalvi
wiley   +1 more source

Ueber Amido‐ und Methylamidocrotonylanilid

open access: yesJournal für Praktische Chemie, 1892
n ...
openaire   +1 more source

From Olefin Coordination to Rh─N Bond Formation and Oxidative Addition: pH Effects in Rhodium α‐Methyl‐β‐Amidoitaconate Complexes

open access: yesEuropean Journal of Inorganic Chemistry, EarlyView.
The coordination of α‐methyl‐β‐amidoitaconate at Rh(I) diphosphine complexes is studied using a combination of high‐field and low‐field flow NMR spectroscopy and X‐ray analysis. In the presence of basic or acidic additives, the formation of neutral Rh(I) or Rh(III) complexes occurs.
Neeraja M. Kaimal   +3 more
wiley   +1 more source

Investigação dos processos de gelatinização e extrusão de amido de milho

open access: yesPolímeros, 2000
Os processos de gelatinização e de extrusão de amido de milho foram estudados. Calorimetria diferencial de varredura e miscroscopia óptica foram utilizadas na determinação da temperatura de gelatinização, T(G), em função do grau de umidade.
Souza Roberta C. R., Andrade Cristina T.
doaj  

Infrared Irradiation‐Assisted Pd/Cu Catalysis for Sustainable C–N Cross‐Coupling Reactions

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A combined Pd/Cu catalytic system is demonstrated to be highly effective in promoting infrared irradiation‐assisted Buchwald–Hartwig aminations under nonanhydrous and open‐air conditions, using only a stoichiometric amount of a green reaction solvent.
Ambra M. Fiore   +4 more
wiley   +1 more source

Amido resistente: características físico-químicas, propriedades fisiológicas e metodologias de quantificação

open access: yesCiência Rural, 2005
Encontrado em diversos alimentos, o amido é a mais importante fonte de carboidratos da dieta. Potencialmente digerível pelas enzimas no trato gastrintestinal, é absorvido na forma de glicose no intestino delgado. Apesar disso, quantidade significativa de
Walter Melissa   +2 more
doaj  

Balanço de carboidratos em gemas florais de dois genótipos de pereira sob condição de inverno ameno Balance of carbohydrates in flower bud of two pear tree genotypes under mild winter conditions

open access: yesRevista Brasileira de Fruticultura, 2006
As pereiras européias e asiáticas, cultivadas sob condições de inverno ameno, como na região Sul do Brasil, apresentam problemas de adaptação. Durante o inverno, as oscilações térmicas e o baixo acúmulo de frio têm sido referidos por alguns autores como ...
Alexandre Couto Rodrigues   +5 more
doaj   +1 more source

PFAS Forensics, Part 2: Analytical Tools and Data Analysis for Source Attribution

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Successfully attributing per‐ and polyfluoroalkyl substances (PFAS) contamination to specific sources may require employing advanced analytical techniques and interpreting complex multivariate datasets. This paper, the second in a series on PFAS forensics, presents some of the analytical and data analysis tools practitioners use to identify ...
Taryn McKnight   +6 more
wiley   +1 more source

Extração e Caracterização do Amido de Inhame e Desenvolvimento de Filmes Comestíveis Antimicrobianos

open access: yesTemas Agrarios, 2009
O objetivo deste trabalho foi extrair e caracterizar o amido do inhame Dioscorea alata e desenvolver filmes antimicrobianos. O amido foi extraído e determinado sua composição físicoquímica e propriedades reológicas.
Alba M. Durango   +2 more
doaj  

Nutritional potential of green banana flour obtained by drying in spouted bed

open access: yesRevista Brasileira de Fruticultura, 2013
This study evaluated the chemical composition of peeled and unpeeled green banana Cavendish (AAA) flour obtained by drying in spouted bed, aiming at adding nutritional value to food products.
Carolina Vieira Bezerra   +3 more
doaj   +1 more source

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