Bittersweet chocolates containing prebiotic and sweetened with stevia (Stevia rebaudianaBertoni) with different Rebaudioside A contents: multiple time-intensity analysis and physicochemical characteristics

2017 ◽  
Vol 52 (8) ◽  
pp. 1731-1738 ◽  
Author(s):  
Bruna Marcacini Azevedo ◽  
Janaína Madruga Morais-Ferreira ◽  
Valdecir Luccas ◽  
Helena Maria André Bolini
Keyword(s):  
Physicochemical Characteristics ◽  
Multiple Time ◽  
Rebaudioside A ◽  
Intensity Analysis

MULTIPLE TIME-INTENSITY ANALYSIS AND ACCEPTANCE OF RASPBERRY-FLAVORED GELATIN

2009 ◽  
Vol 24 (5) ◽  
pp. 648-663 ◽  
Author(s):  
ALESSANDRA B. PALAZZO ◽  
HELENA M.A. BOLINI
Keyword(s):  
Multiple Time ◽  
Intensity Analysis

scholarly journals Exploring Spatio-temporal change in global land cover using categorical intensity analysis

2021 ◽  
Author(s):  
M Lamchin ◽  
Thomas Bilintoh ◽  
Woo-Kyun Lee ◽  
Altansukh Ochir ◽  
Chul-Hee Lim
Keyword(s):  
South America ◽  
Land Cover ◽  
Land Degradation ◽  
Urban Areas ◽  
Multiple Time ◽  
Intensity Analysis ◽  
Tropical Regions ◽  
Global Land Cover ◽  
Global Land ◽  
Spatio Temporal

Global land degradation and urbanization are rapidly progressing during the 21st century. Herein, we assessed Spatio-temporal changes in global land cover using categorical intensity analyses from 1992 to 2018 to evaluate global land degradation and urbanization. Specifically, we evaluated the decrease, increase, and expansion processes and observed temporal differences. These evaluations were performed on a global scale across continents and climates at a category level for six-term intervals. Intensity analysis is a means of characterizing differences between sets at multiple time points using mathematics. In this study, inputs were gridded land cover from 1992, 1997, 2002, 2007, 2012, 2015, and 2018 and for six land categories: “Cropland,” “Forest,” “Shrubland,” “Built,” “Bare areas,” and “Other” The analysis of change for the 26 years shows that the cropland area increased globally by 786,656 km2 between 1992 and 2018. The areas occupied by forests continuously decreased by 936,960 km2, especially in South America which experienced the highest decline. Urban areas increased by 436,084 km2, with the highest increase observed in temperate regions. This paper concludes that for the last 26 years, land has been converted and degraded attributable to urbanization in temperate regions. Additionally, in South America and tropical regions, the expansion of cropland is the biggest contributor to the decline in “Forests” and “Shrubland”. The largest component of change was observed for the “Built” category. while, “Forest” and “Cropland” experienced significant losses and gains in the first, second, and third intervals.

Applications of SEM/EDXA in cement clinker investigation

1990 ◽  
Vol 48 (4) ◽  
pp. 870-871
Author(s):  
Arezki Tagnit-Hamou ◽  
Shondeep L. Sarkar
Keyword(s):  
Mineralogical Composition ◽  
Physicochemical Characteristics ◽  
Cement Clinker ◽  
Accurate Information ◽  
Phase Identification ◽  
History Of ◽  
Bulk Chemical ◽  
Resolution Imaging ◽  
Proven Method ◽  
Instantaneous Chemical

All the desired properties of cement primarily depend on the physicochemical characteristics of clinker from which the cement is produced. The mineralogical composition of the clinker forms the most important parameter influencing these properties.Optical microscopy provides reasonably accurate information pertaining to the thermal history of the clinker, while XRDA still remains the proven method of phase identification, and bulk chemical composition of the clinker can be readily obtained from XRFA. Nevertheless, all these microanalytical techniques are somewhat limited in their applications, and SEM/EDXA combination fills this gap uniquely by virtue of its high resolution imaging capability and possibility of instantaneous chemical analysis of individual phases.Inhomogeneities and impurities in the raw meal, influence of kiln conditions such as sintering and cooling rate being directly related to the microstructure can be effectively determined by SEM/EDXA. In addition, several physical characteristics of cement, such as rhcology, grindability and hydraulicity also depend on the clinker microstructure.

Common modifications of selenocysteine in selenoproteins

2019 ◽  
Vol 64 (1) ◽  
pp. 45-53 ◽  
Author(s):  
Elias S.J. Arnér
Keyword(s):  
Amino Acids ◽  
Covalent Binding ◽  
Physicochemical Characteristics ◽  
Redox Active

Abstract Selenocysteine (Sec), the sulfur-to-selenium substituted variant of cysteine (Cys), is the defining entity of selenoproteins. These are naturally expressed in many diverse organisms and constitute a unique class of proteins. As a result of the physicochemical characteristics of selenium when compared with sulfur, Sec is typically more reactive than Cys while participating in similar reactions, and there are also some qualitative differences in the reactivities between the two amino acids. This minireview discusses the types of modifications of Sec in selenoproteins that have thus far been experimentally validated. These modifications include direct covalent binding through the Se atom of Sec to other chalcogen atoms (S, O and Se) as present in redox active molecular motifs, derivatization of Sec via the direct covalent binding to non-chalcogen elements (Ni, Mb, N, Au and C), and the loss of Se from Sec resulting in formation of dehydroalanine. To understand the nature of these Sec modifications is crucial for an understanding of selenoprotein reactivities in biological, physiological and pathophysiological contexts.

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