Wszystkie pola: cellulose content - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimization of sulfuric acid treatment of peanut shells for cellulose contents through Box-Behnken design
Autorzy:: Kanwal, S.
Irfan, M.
Powiązania:: https://bibliotekanauki.pl/articles/80371.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: peanut shell
Arachis hypogaea
pretreatment
cellulose content
sulphuric acid
saccharification
lignocellulosic substrate
bioethanol production
Źródło:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 2
0860-7796
Pojawia się w:: BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of harvest date on structural carbohydrates and lignin content in meadow sward in different pluvio-thermal conditions
Autorzy:: Wróbel, Barbara
Zielewicz, Waldemar
Paszkiewicz-Jasińska, Anna
Spychalski, Bartosz
Jakubowska, Zuzanna
Powiązania:: https://bibliotekanauki.pl/articles/2174312.pdf
Data publikacji:: 2022
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: air temperature
cellulose
feed digestibility
hemicellulose
lignin
nutritional value
precipitation sum
Opis:: The content of structural carbohydrates and lignin are important assessment criteria of the feed value of meadow plants. It is affected by many independent factors, including among others its development stage during the harvest as well as climatic conditions, especially the amount of rainfall. During the years 2014-2016, plant samples were harvested at weekly intervals, respectively five times from late April to late May. The effect of harvest date on cellulose, hemicelluloses and lignin contents was evaluated. The chemical composition of plants was varied, depending not only on harvest date but also on the year of study. Regardless of the course of meteorological conditions in subsequent growing seasons, the increase of cellulose (from 236.5 to 297.9 g∙kg-1 DM), hemicelluloses (from 159.3 to 210.8 g∙kg-1 DM), and lignin (from 31.5 to 43.1 g∙kg-1 DM) in the following dates of harvest were observed. These parameters were also positively correlated with the total rainfall from the begging of vegetation season to the date of plants sampling (R2 = 0.65, 0.12 and 0.44 for cellulose, hemicelluloses and lignin, respectively), and with the average daily air temperature in the moment of harvest (R2 = 0.66, 0.32 and 0.52 for cellulose, hemicelluloses and lignin, respectively). The cellulose and lignin content, regardless of the harvest date, were significantly higher in the first year of the study (2014), when moisture conditions for plant development were optimal.
Źródło:: Journal of Water and Land Development; 2022, 55; 60--66
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The effect of growth regulator on structural and non-structural carbohydrates and lignin content in selected grass species and cultivars
Autorzy:: Ciepiela, G. A.
Godlewska, A.
Powiązania:: https://bibliotekanauki.pl/articles/125416.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Dactylis glomerata
Festulolium braunii
Kelpak
cellulose
hemicellulose
Opis:: The research was undertaken to determine the effect of the biostimulant Kelpak SL, derived from brown seaweed species Ecklonia maxima (kelp), on structural and non-structural carbohydrates, as well as lignin content in orchard grass and Braun’s festulolium. The experiment was a split-plot arrangement with three replicates. It was set up at the experimental facility of the University of Natural Sciences and Humanities, Siedlce, in late April 2009. The following factors were examined: an application of the plant growth regulator Kelpak SL applied at the rate of 2 dm³·ha^-1 vs an untreated control (0 dm³··ha^-1), pure sown grass species and cultivars grown in monoculture: Dactylis glomerata, cv. Amila and Tukan, as well as Festulolium braunii cv. Felopa and Agula. This study revealed that an application of Kelpak significantly reduced cellulose, hemicellulose and lignin contents of the grasses but significantly increased non-structural carbohydrates, regardless of the remaining factors. Non-structural carbohydrates were the highest in Kelpak-treated Festulolium braunii (on average, 232.7 g·kg^-1).
Źródło:: Journal of Ecological Engineering; 2015, 16, 3; 189-197
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Nature Cellulose Fibre Extracted from Different Cotton Stalk Sections by Degumming
Naturalne włókna celulozowe ekstrahowane z różnych części łodyg bawełny za pomocą odgumowywania
Autorzy:: Li, L.
Zhao, L.
Powiązania:: https://bibliotekanauki.pl/articles/233460.pdf
Data publikacji:: 2015
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:: fibre extraction
cotton stalk
residue gum content
morphology
ekstrakcja włókna
bawełniana łodyga
odgumowanie
włókna łykowe
morfologia
Opis:: Bast fibres are important because they have biodegradable and eco-friendly characteristics. In this paper, natural cellulose fibre extracted from cotton stalk by degumming was investigated. On the basis on the chemical propertiess of cotton stalk bark, a cotton stalk was divided into three sections before fibres were extracted. Through an orthogonal experiment, the extracting conditions of fibres from different sections were obtained. The flexibility and linear density of the fibres extracted were then tested, and the morphology of the fibres was observed by SEM. It was shown that the flexibility and fineness of fibres from the different sections were various. The singular unit fibrel morphology of fibres from different sections had a visible difference.
Włókna łykowe odgrywają istotną rolę ponieważ są biodegradowalne i przyjazne środowisku. Badano naturalne celulozowe włókna ekstrahowane z łodyg bawełny poprzez odgumowywanie. Na podstawie właściwości chemicznych łodygę bawełny dzielono na trzy części przed przeprowadzeniem ekstrakcji. Doświadczalnie określono warunki ekstrakcji dla poszczególnych wyodrębnionych sekcji. Badano elastyczność i masę liniową, oraz za pomocą SEM morfologię. Stwierdzono, że zarówno elastyczność jak i masa liniowa włókien jest różna dla różnych sekcji łodygi. Morfologia jednostkowych włókien wyekstrahowanych różniła się widocznie dla wszystkich trzech części łodygi.
Źródło:: Fibres & Textiles in Eastern Europe; 2015, 6 (114); 37-40
1230-3666
2300-7354
Pojawia się w:: Fibres & Textiles in Eastern Europe
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The use of natural fibers in stone mastic asphalt mixtures: a review of the literature
Autorzy:: AlSaadi, Israa
Tayh, Sady A.
Jasim, Abbas F.
Yousif, Rana
Powiązania:: https://bibliotekanauki.pl/articles/27312180.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: włókno celulozowe
właściwości mechaniczne
włókno naturalne
zawartość
mieszanka SMA
asfalt
włókno odpadowe
cellulose fiber
mechanical properties
natural fiber
content
stone mastic asphalt
waste fiber
Opis:: All over the world, highway traffic is increasing rapidly, as is the population and the road network. The country’s maximum and minimum temperatures also vary greatly. Moreover, the pavements are subjected to various types of damage. Pavement binders and mixtures are a constant area of research and development for scientists and engineers. Adding fibers to bituminous mixes may improve the properties of fatigue and strength of the material. Natural fibers may be used to improve asphalt mixtures performance due to their inherent compatibility with asphalt cement and excellent mechanical properties. Also, the high stone content and relatively high asphalt content in SMA mixture led to the occurrence of drain-down of the asphalt mastic from the mixture, and this problem requires the use of stabilizing additives such as cellulose fibers, mineral fibers, or polymers to mitigate this problem and ensure long-term performance. The most public sort of stabilizing additives is cellulose fiber. Overall, natural fibers in stone mastic asphalt mixes are discussed in this paper. An additional focus is on how asphalt concrete will be affected by natural fibers, mixing techniques, and managerial decisions. According to the review, the stabilizing and strengthening impact of natural fibers on the performance of asphalt mixes have been extensively researched. Natural fibers can significantly increase the rut and flow resistance of asphalt mixtures. Adding natural fibers to pavement can increase structural resistance to pavement distress.
Źródło:: Archives of Civil Engineering; 2023, 69, 3; 347--370
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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