Results 41 to 50 of about 22,346 (250)

Enteric helminths promote Salmonella co-infection by altering the intestinal metabolome [PDF]

open access: yes, 2017
Intestinal helminth infections occur pre dominantly in regions where exposure to enteric bacterial pathogens is also common. Helminth infections inhibit host immunity against microbial pathogens, which has largely been attributed to the induction of ...
Borchers, Christoph H.   +13 more
core   +1 more source

Highly Sensitive Electrochemical Biosensor Based on Hairy Particles with Controllable High Enzyme Loading and Activity

open access: yesAdvanced Functional Materials, EarlyView.
For the first time, a highly sensitive electrochemical biosensor based on SiO2‐based hairy particles with a grafted PDMAEMA polymer brush containing a quantifiable and large amount of immobilized Laccase is reported. The fabricated biosensor exhibits a sensitivity of 0.14 A·m⁻¹, a limit of detection (LOD) of 0.1 µm, and a detection range of 0.3–750 µm,
Pavel Milkin   +7 more
wiley   +1 more source

Caudiquinol: A Meroterpenoid with an Intact C20 Geranylgeranyl Chain Isolated from Garcinia caudiculata

open access: yesMolecules
The tropical Garcinia genus of flowering plants is a prolific producer of aromatic natural products including polyphenols, flavonoids, and xanthones. In this study, we report the first phytochemical investigation of Garcinia caudiculata Ridl.
Maya Valmiki   +4 more
doaj   +1 more source

Facet‐Engineered S‐Scheme Heterostructure With Enhanced Active Sites for Efficient Photocatalytic Degradation of Organic Contaminants

open access: yesAdvanced Functional Materials, EarlyView.
The facet‐engineered ZnO/Zn3In2S6 heterostructure, dominated by {001} plane coupling, exposes abundant unsaturated Zn sites with elongated Zn─O bonds, directing photoexcited charge carriers along an S‐scheme pathway and suppressing recombination. Enhanced interfacial Zn adsorption toward bisphenol A and methylene blue further synergistically promotes ...
Yang Yang   +6 more
wiley   +1 more source

SCREENING OF ANTIMICROBIAL PROPERTIES OF ETHANOLIC EXTRACTS FROM SOME KINDS OF RAW MATERIALS WITH QUINONEDERIVATIVES [PDF]

open access: yesAnnals of Mechnikov's Institute, 2014
This paper presents data on screening of antimicrobial properties of extracts from some kinds of raw materials (18 plants) with hydroquinone, naphtoquinone or anthraquinone derivatives.
Boyko N.N.   +2 more
doaj  

A preliminary study on α-glucosidase inhibitory and antidiabetic activity of Indonesian Toona sinensis bark extract in alloxan-induced diabetic rats [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
This study aimed to determine the antidiabetic activity of Toona sinensis bark extract. Spectrophotometry was used to measure the inhibitory activity of α-glucosidase. Its antidiabetic activity was determined in vivo. Phytochemical analysis showed that
Syamsul Falah   +3 more
doaj   +1 more source

Ultrasonicated synthesis of 1-(2-hydroxyaryl)-3-(pyrrolidin-1-yl)-prop-2-en-1-ones and their antimicrobial screening [PDF]

open access: yes, 2009
: A facile synthesis of title compounds has been carried out under ultrasound irradiation. The main advantages of the present procedure are shorter reaction time and higher yield.
Bhausaheb Karale   +3 more
core   +1 more source

Ten years of marine natural products research at Rhodes University [PDF]

open access: yes, 2004
Marine invertebrates, algae and microorganisms produce a plethora of structurally unique and biologically active secondary metabolites. The ecological roles of these natural products, although not completely understood, range from chemical defence ...
Beukes, Denzil R   +1 more
core   +2 more sources

How to Chemically Protect PFAS‐Free Membranes in Fuel Cells: Radical Quenching Poly(vinylphosphonic acid) Layer

open access: yesAdvanced Functional Materials, EarlyView.
Hydrocarbon membranes are a greener alternative to PFSA in PEM fuel cells, but degrade rapidly from radical attack. We present a novel strategy using poly(vinylphosphonic acid) (PVPA) as a local radical scavenger. Incorporated as an interfacial barrier, PVPA enhances chemical stability and significantly extends membrane lifetime under accelerated ...
Hendrik Sannemüller   +6 more
wiley   +1 more source

Photoenzymatic Hydroalkylation Enables Streamlined Access to Aryl Glutarimide Precursors

open access: yesAngewandte Chemie, EarlyView.
We report a photoenzymatic hydroalkylation that enables streamlined, stereocontrolled access to aryl glutarimide precursors relevant to targeted protein degradation. Engineered flavin‐dependent “ene”‐reductases provide broad scope and high enantioselectivity through a distinct electron transfer–enantioselective proton transfer pathway.
Zhi Xu   +9 more
wiley   +2 more sources

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