Autor: James, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Distillation Column Control in Labview Using Fuzzy Interference System
Autorzy:: James, S. Aaron
Judice, A. Antony
Kumaravel, G.
Powiązania:: https://bibliotekanauki.pl/articles/1177884.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Distillation column
Fuzzy interference System
LABVIEW
Opis:: The growing importance of batch processes has recently targeted attention on the problem of rising the performance of batch operations. However, there's a low degree of automation of batch units in the present scenario. Fuzzy logic could be a fantastic human idea, doubtless applicable to a good vary of processes and tasks that need human intuition and knowledge. Fuzzy logic are often applied by means of software, dedicated controllers, or fuzzy microprocessors. Under conventional control, the average reflux rate enforced on a batch process was over the average reflux rate enforced with fuzzy algorithms, that is our planned methodology.
Źródło:: World Scientific News; 2018, 98; 214-220
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Phytochemical and in vitro antioxidant assessment of Yoyo bitters
Autorzy:: James-Okoro, Paula-Peace O.
Iheagwam, Franklyn N.
Sholeye, Mariam I.
Umoren, Itoroobong A.
Adetuyi, Babatunde O.
Ogundipe, Adebanke E.
Braimah, Adefoyeke A.
Adekunbi, Tobi S.
Ogunlana, Oluseyi E.
Ogunlana, Olubanke O.
Powiązania:: https://bibliotekanauki.pl/articles/1031418.pdf
Data publikacji:: 2021
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: GCMS
Yoyo herbal bitters
antioxidant assay
in vitro
phytochemical analysis
Opis:: In this paper, herbal bitters are widely used due to their numerous acclaimed health benefits in many Nigerian homes; however, many have not been subjected to scientific scrutiny. The aim of this study was to determine the phytochemical composition and antioxidant capacity of a non-alcoholic polyherbal formulation, Yoyo bitters, towards validating its broad pharmacological claims. The phytochemical components of Yoyo bitters were ascertained by phytochemical screening assays and gas chromatography-mass spectrometry (GC-MS). The antioxidant activity was investigated in vitro using 2,2-diphenyl-1-picryhydrazyl (DPPH) radical, hydrogen peroxide (H2O2) scavenging activity, total antioxidant capacity (TAC) and ferric reducing antioxidant power (FRAP) assays. Qualitative phytochemical analysis of Yoyo bitters showed the presence of saponins, tannins, flavonoids, terpenoids, cardiac glycosides and anthocyanins. The total phenols, flavonoids, flavanols, tannins and carotenoids content were 14.741 ±0.64 mg GAE/ml, 0.152 ±0.01 mg RE/ml, 0.437 ±0.02 mg RE/ml, 0.368 ±0.04 mg TAE/ml and 0.016 ±0.00 mg CAE/ml respectively. GC-MS chromatogram revealed the presence of forty-three (43) phytochemical compounds with D-allose (41.81%), 1,6-anhydro-beta-D-glucofuranose (24.15%), 5-hydroxymethylfurfural (8.02%) and Z-6-pentadecen-1-ol acetate (3.50%) as the most abundant constituents. Yoyo bitters demonstrated effective antioxidant activity against DPPH and H2O2 with IC50 values of 0.492 mg/ml and 0.629 mg/ml respectively compared to ascorbic acid of 0.161 mg/ml and 0.130 mg/ml respectively. Total antioxidant capacity and ferric reducing antioxidant power of Yoyo bitters were 0.432 mg AAE/ml and 2.236 mg AAE/ml respectively. This study validates the antioxidant capacity of Yoyo bitters and provides chemical basis for its acclaimed pharmacological actions.
Źródło:: World News of Natural Sciences; 2021, 37; 1-17
2543-5426
Pojawia się w:: World News of Natural Sciences
Dostawca treści:: Biblioteka Nauki

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