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  1. Article ; Online: Effect of short-term use of FFP2 (N95) masks on the salivary metabolome of young healthy volunteers: a pilot study.

    Islam, Sk Ramiz / Prusty, Debasish / Maiti, Subhadip / Dutta, Raju / Chattopadhyay, Partha / Manna, Soumen Kanti

    Molecular omics

    2023  Volume 19, Issue 5, Page(s) 383–394

    Abstract: The use of face masks has become an integral part of public life in the post-pandemic era. However, the understanding of the effect of wearing masks on physiology remains incomplete and is required for informing public health policies. For the first time, ...

    Abstract The use of face masks has become an integral part of public life in the post-pandemic era. However, the understanding of the effect of wearing masks on physiology remains incomplete and is required for informing public health policies. For the first time, we report the effects of wearing FFP2 masks on the metabolic composition of saliva, a proximal matrix to breath, along with cardiopulmonary parameters. Un-induced saliva was collected from young (31.2 ± 6.3 years) healthy volunteers (
    MeSH term(s) Humans ; COVID-19 ; SARS-CoV-2 ; Masks ; Pilot Projects ; Metabolome
    Language English
    Publishing date 2023-06-12
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2515-4184
    ISSN (online) 2515-4184
    DOI 10.1039/d2mo00232a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Ultrafast Removal of Cationic Dye Using Agrowaste-Derived Mesoporous Adsorbent

    Dutta, Raju / Ekhe Jayant D / Mandavgane Sachin A / Nagarjuna Tallam V

    Industrial & Engineering Chemistry Research. 2014 Dec. 03, v. 53, no. 48

    2014  

    Abstract: High-purity amorphous silica extracted from rice husk ash (RHA) was utilized for synthesizing a low cost, novel mesoporous adsorbent (RHS-MCM-41) for removal of the cationic dye Brilliant Green (BG) from water. Transformation of the silica to a ... ...

    Abstract High-purity amorphous silica extracted from rice husk ash (RHA) was utilized for synthesizing a low cost, novel mesoporous adsorbent (RHS-MCM-41) for removal of the cationic dye Brilliant Green (BG) from water. Transformation of the silica to a mesoporous aluminosilicate structure resulted in ∼9 fold enhancement of surface area generating negatively charged surface active sites. Adsorbent was characterized with small angle X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, nitrogen adsorption–desorption analysis, and Fourier transform infrared spectroscopy. An equilibrium state was achieved very quickly (within 15 min) following pseudo-second-order kinetics (kₛ = 315 × 10–⁴ g/(mg min)) with a very high adsorption capacity of 250 mg/g. Variation in adsorbent surface functionality revealed that the presence of negative charge centers favor BG adsorption. The Elovich model fitting the system explicated involvement of the chemisorption process. Intraparticle diffusion model elucidates a two-step diffusion and saturation stage. Equilibrium batch adsorption data are best explained with Langmuir–Freundlich isotherm model.
    Keywords active sites ; adsorbents ; adsorption ; energy-dispersive X-ray analysis ; engineering ; Fourier transform infrared spectroscopy ; husk ash ; models ; nitrogen ; porous media ; scanning electron microscopy ; silica ; surface area ; X-ray diffraction
    Language English
    Dates of publication 2014-1203
    Size p. 18558-18567.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 1484436-9
    ISSN 1520-5045 ; 0888-5885
    ISSN (online) 1520-5045
    ISSN 0888-5885
    DOI 10.1021%2Fie5030003
    Database NAL-Catalogue (AGRICOLA)

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