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Sheikh Imranudin Sheikh-Ali,Akil Ahmad,Siti-Hamidah Mohd-Setapar,Zainul Akmal Zakaria,Norfahana Abdul-Talib,Aidee Kamal Khamis,Md Enamul Hoque 한국미생물학회 2014 The journal of microbiology Vol.52 No.10
The contamination of food and feed by Aspergillus has becomea global issue with a significant worldwide economicimpact. The growth of Aspergillus is unfavourable to thedevelopment of food and feed industries, where the problemshappen mostly due to the presence of mycotoxins, which is atoxic metabolite secreted by most Aspergillus groups. Moreover,fungi can produce spores that cause diseases, such asallergies and asthma, especially to human beings. High temperature,high moisture, retarded crops, and poor food storageconditions encourage the growth of mold, as well asthe development of mycotoxins. A variety of chemical, biological,and physical strategies have been developed to controlthe production of mycotoxins. A biological approach,using a mixed culture comprised of Saccharomyces cerevisiaeand Lactobacillus rhamnosus resulted in the inhibition of thegrowth of fungi when inoculated into fermented food. Theresults reveal that the mixed culture has a higher potential(37.08%) to inhibit the growth of Aspergillus flavus (producerof Aflatoxin) compared to either single culture, L. rhamnosusNRRL B-442 and S. cerevisiae, which inhibit the growth by63.07% and 64.24%, respectively.
Essential Oil Penetration Depth in Prunus sargentii Rehder
Sheikh Ali Ahmed,Seong Du Hong,Su Kyoung Chun 한국가구학회 2007 한국가구학회지 Vol.18 No.4
An experiment was conducted to know the essential oil penetration depth in radial and longitudinal direction of Prunus sargentii. Oil penetration depth was found greater than radial flow depth. Vessel conducted oil more than wood fiber. In radial direction, body ray parenchyma was found more permeable than marginal ray parenchyma and it was about 138% times higher. Furthermore penetration depth of oil in intercellular space was greater than ray parenchyma and it was about 250% higher than ray parenchymas. Initial flow speed was found high and then it gradually decreased.
Sheikh, Faheem A.,Zargar, Mohammad Afzal,Tamboli, Ashif H.,Kim, Hern Elsevier 2016 APPLIED SURFACE SCIENCE - Vol.385 No.-
<P><B>Abstract</B></P> <P>Nanofibers fabricated from Poly(vinylidene fluoride) (PVDF) possesses potential applications in the field of filtrations, because of their excellent resistance towards harsh chemicals. However, the hydrophobicity restricts its further application. In this work, we focus on optimal parameters for post-electrospun tethering of Poly(vinyl alcohol) (PVA) as superhydrophilic domain onto each individual PVDF nanofibers by exploiting the in situ hydrothermal approach. The results indicated an increase in nanofiber diameters due to coating of PVA and improved surface wettability of PVDF nanofibers. The tensile tests of nanofibers indicated that mechanical properties of PVDF nanofibers could be sharply tuned from rigid to ductile. Furthermore, the studies strongly suggest that in situ hydrothermal treatment of post-electrospun nanofibers can improve the water contact angle and these nanofibers can be used in varied applications (e.g., in water purification systems).</P> <P><B>Highlights</B></P> <P> <UL> <LI> PVA coated PVDF nanofibers can be easily prepared by hydrothermal treatment. </LI> <LI> The inherent hydrophobicity of PVDF nanofibers can be changed to hydrophilic. </LI> <LI> The hydrogen bonding interaction can induce the crystalline conformation of PVDF. </LI> <LI> Resultant nanofibers have significant improvement in the tensile strength. </LI> <LI> Prepared membranes promise to aid in filtration due to involvement of PVA coating. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Sheikh, Tariq Ahmad,Banday, J.M.,Hussain, Mohammed A. Techno-Press 2021 Advances in computational design Vol.6 No.4
In this study, the progressive collapse behavior (full load and displacement control methods) of low-rise models representing 2-bay2storey and 3-bay3storey reinforced concrete framed structures located in high seismic zone, designed by Indian codes(IS 456:2000 and IS 1893-2016)for envelope loading combination are assessed with and without U.S. General Services Administration (GSA) guidelines. For displacement-controlled mechanism, a target displacement of 2%, 4% and 5% of the height of structure are considered. Non-linear static behavior of the structure is investigated through (a) Hinge formation pattern (b) Displacement of Joints adjacent to removed column along x-axis and z-axis(c) and Pushdown capacity curves. The results indicate that the Hinge formation patterns are similar for envelope loading combination and GSA loading combination, and the accuracy of the displacement-controlled method is much remarkable compared to full load method, therefore a standard formula is obligatory for calculating the target displacement to control progressive collapse, based on structural requirements unlike the dynamic increase factor calculations based on the structural capacity. With increase in each span and height of structure consecutively, pushdown capacity curves indicate that the base shear increases approximately by two times whereas the displacement in downward direction reduces by 59% and 62.4% for corner column removal and middle column removal cases respectively.