Physicochemical changes
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Ebook "New frontiers in photochromism" focused not only on the above-mentioned classical subjects in photochromism, such as color changes, optical memory, and optical switches, but also on fundamental physicochemical studies and unprecedented application fields that have not yet been explored in photochromism. The latter topics include light-driven mechanical motion, photocontrol of surface wettability, metal deposition on solid materials, photocontrol of chiral properties, ultrafast decoloration dyes, and femtosecond laser experiments, among others.
297p coduathanh1122 27-03-2024 3 1 Download
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The aim of this study was to investigate the effect of airfrying process on moisture and oil contents and sensory evaluation of fried potato strips compared with traditional deep-fat frying. Also, study the changes in physicochemical properties of oil extracted from potato strips after frying.
7p viisac 23-09-2023 4 1 Download
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Tensoactive species obtained by papain hydrolysis of soy protein were characterized structurally and physicochemically, and their foam-forming and -stabilizing capacity studied. Protein structural changes upon reaction ending were correlated with functional and interfacial properties and with the behaviour thereof with varying hydrolysis degree.
9p viisac 23-09-2023 5 1 Download
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Muskmelon (Cucumis melo) is a vegetable much appreciated by the Cameroonian population. The aim of this study was to investigate the effect of development stage on morphological and physicochemical characteristics of the fruit.
11p viisac 23-09-2023 5 1 Download
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The physicochemical composition of sugar apple (Annona squamosa L.) fruits from Kibaha, Coast Region during open air storage ripening process were determined. The ash, titratable acidity, crude fat, crude fiber, moisture and sugars content were determined by proximate analysis.
8p viisac 23-09-2023 2 1 Download
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This paper reports effects of ultraviolet (UV) light radiation on the physicochemical, electrical and mechanical properties of low-density polyethylene (LDPE) cable insulating materials. Changes in structural and morphological properties of UV-aged samples were characterized by various analytical methods such as attenuated total reflection Fourier transform infrared spectroscopy (ATRFTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM).
12p lyhuyenthu 31-01-2023 7 2 Download
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Tests were performed with cellulose acetate films (CA) incorporating 5, 10, 20, 30, and 50% (w/v) of glycerol with the purpose of evaluating the possible changes caused by the plasticizer on the functional properties of the packaging.
8p vihermione 06-01-2023 14 2 Download
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Characterization and tuning of the porosity of amorphous starch materials are important for many applications, including controlled release of encapsulated proteins. The porosities of these materials in dry and hydrated states can have different physicochemical origins and properties.
10p viginny 30-12-2022 6 2 Download
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Microbial polysaccharide characterization requires purification that often involves detergent precipitation and lyophilization. Here we examined physicochemical changes following lyophilization of Cryptococcus neoformans exopolysaccharide (EPS).
9p viginny 30-12-2022 2 2 Download
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This study aims to analyze spatial and temporal changes of surface and groundwater quality from March to December 2019, in Son Dong commune, Hoai Duc district, Hanoi. A number of physicochemical parameters were sampled for analysis to give quantitative assessments, and spatial distribution as well as temporal variation were performed.
10p vikoenigsegg 26-09-2022 12 3 Download
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A model was proposed and used to calculated the changes in enthalpy (∆Ho), entropy (∆So), and Gibbs energy (∆Go), as well as equilibrium constant (K) relating to the sintering of alumina compacts. Specific nanopore volume (V) of the compacts was assumed as a thermodynamic variable. A hypothetical equilibrium constant (Kh) and corresponding Gibbs energy (∆Goh) were calculated depending on the V value measured after each sintering.
5p langthannam 29-12-2021 10 0 Download
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Bioassessment of surface waters is one of the most important approaches to predict the deterioration of ecosystems and achieve environmental sustainability according to the application of the European Water Framework Directive. The present review emphasizes the importance of the bioassessment of freshwater quality especially running waters based on diatom metrics. Nutrient enrichment and hydromorphological alternation driven by human activities are the main factors for the ecological compromise of freshwater ecosystems.
18p tudichquannguyet 29-11-2021 10 1 Download
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The effect of washing stabilized and unstabilized blown extruded films of low-density polyethylene (LDPE) used for greenhouse coverings naturally weathered in a sub-Saharan facility at Ghardaïa (Algeria) for 19 and 6 months, respectively, was studied. A comparison between unwashed and daily washed samples was done. The changes in the films’ properties were followed at regular intervals using various characterization methods (physicochemical and mechanical).
20p tudichquannguyet 29-11-2021 14 2 Download
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Ginseng rusty root symptoms (GRS) is one of the primary diseases of ginseng. This disease leads to a severe decline in the quality of ginseng. It has been shown that the occurrence of GRS is associated with soil environmental degradation, which may involve changes in soil microbiology and physicochemical properties.
16p vijichea2711 28-05-2021 15 1 Download
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The present study was undertaken to assess broiler chicken breast fillets' physicochemical quality characteristics changes caused due to repeated freeze-thaw cycles by three different thawing methods. Meat samples were subjected to slow freezing at -18℃ for seven days and thawed under various thawing methods viz.
9p trinhthamhodang11 27-04-2021 10 1 Download
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This paper presents some results associated with physicochemical changes of fresh duck eggs after being preserved by chitosan membranes at different concentrations. Chitosan coating at the concentration of 1.5% worked best for preserving fresh duck eggs at normal temperature. The number of total Coliforms after 30 days was 30 Coliforms/100 g sample. There was no detection of the existence of Salmonella in eggs of experimental samples.
6p nguaconbaynhay10 18-01-2021 13 3 Download
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A study on the seasonal changes in the plankton community was carried out in semi intensive carp culture ponds over a period of 9 months. Plankton diversity and physicochemical parameters of water are important criteria for evaluating the suitability of water for culture practices.
4p trinhthamhodang9 16-12-2020 16 2 Download
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Considering these factors, the present study was undertaken to evaluate the performance of 2 genotypes under different inter-row spacing and N levels in terms of productivity, economics and changes in soil physicochemical properties over the experimental period.
10p cothumenhmong7 09-09-2020 10 1 Download
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The objective of this research was to examine changes in physiochemical properties, oxidation indices, phenolic compounds and fatty acid composition during refining of cottonseed oil and soybean oil. 2,2-diphenyl-1-picrylhydrazyl (DPPH) and Rancimat method were used for determination of antioxidant capacities. The results obtained showed that specific gravity have decreased after refining, while refining process does not have a significant effect on the refractive index.
16p nguaconbaynhay6 23-06-2020 15 0 Download
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The experiment was carried out to assess the physico-chemical characteristics of custard apple fruits, standardization of pulp: water ratio and recipes for jam and to study the sensory qualities changes of jam during storage at ambient temperature. The experiment was done during the year 2016-17 in the Department of Fruit Science, College of Agriculture, IGKV, Raipur (C.G.).
11p quenchua6 15-06-2020 14 1 Download