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The corrosion inhibitor 5-tolyltriazole (5-TTri) can have a detrimental impact on aquatic systems thus implying an acute need to reduce the effluent concentrations of 5-TTri. In this study, 5-TTri biodegradation was enhanced through acclimation and nutrient supply. Activated sludge communities (ASC)...
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Edaravone, an electron spin trapper with radical scavenging activity, has been shown to be effective in reducing infarct volume in humans following ischemic stroke. However, concerns of edaravone-induced renal toxicity have limited its clinical adoption. Previous work has demonstrated that edaravone...
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Protein tyrosine phosphatases (PTPs) play an essential role in maintaining the proper tyrosine phosphorylation state of proteins. Abnormal tyrosine phosphorylation has been implicated in diseases as diverse as type 2 diabetes, cancer, immune disorders and neurological disorders, and thus inhibitors ...
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Non-isothermal crystallisation studies of Organoiron poly(alkynyl methacrylate)s coordinated to dicobalt hexacarbonyl using differential scanning calorimetry (DSC) are reported. Two exothermic peaks appear on crystallisation of the polymers under investigation. Four isoconversional methods (the diff...
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Polyaniline, poly( N-methyl aniline), poly(2-ethyl aniline) and poly(2-propyl aniline) were intercalated into layered molybdenum diselenide by using the exfoliation/restacking property of LiMoSe. MoSe was reacted with n-butyllithium to form LiMoSe. The LiMoSe was exfoliated in N-methylformamide (NMF...
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The reaction of dichloro-terminated organoiron complex [Fe(1,4-C6H4Cl2)Cp]+PF6- (3) with 4-hydroxybenzoic acid resulted in the formation of dicarboxylic acid organoiron complex 4. 4′-Hexyl alcohol-2,2′:6′,2″-terpyridine (hextpy) 2 was reacted with dicarboxylic acid organoiron complex 4 or th...
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The present study demonstrates the benefits of combinatorial antioxidant therapy in the treatment of ischemic stroke. Male Sprague-Dawley rats were anaesthetised and the middle cerebral artery (MCA) was occluded for 30 minutes followed by 5.5 hours of reperfusion. Pretreatment with resveratrol 30 mi...
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The corrosion inhibitor 5-tolyltriazole (5-TTri) can have a detrimental impact on aquatic systems thus implying an acute need to reduce the effluent concentrations of 5-TTri. In this study, 5-TTri biodegradation was enhanced through acclimation and nutrient supply. Activated sludge communities (ASC)...
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A new lipopeptide, cystargamide (1) was isolated from the fermentation broth of the actinomycete Kitasatospora cystarginea. The bacterial strain was selected from a set of 12 Kitasatospora spp. using a secondary metabolomics approach combining liquid chromatography/high-resolution mass spectrometry ...
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Due to a rate increase in the resistance of microbial pathogens to currently used antibiotics, there is a need in society for the discovery of novel antimicrobials. Historically, fungi are a proven source for antimicrobial compounds. The main goals of this study were to investigate the fungal divers...
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Discovery of novel bioactive metabolites from marine bacteria is becoming increasingly challenging, and the development of novel approaches to improve the efficiency of early steps in the microbial drug discovery process is therefore of interest. For example, current protocols for the taxonomic dere...
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A novel series of functionalized thiophenes incorporating coumarin, pyrene and naphthalene pendants were synthesized by Steglich esterification in the presence of DCC/DMAP (dicyclohexylcarbodiimide/N,N-dimethylaminopyridine) and the synthesized monomers were electrochemically deposited onto glassy c...
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Esterification reaction of organoiron complex with terminal carboxylic group with hydroxymethyl EDOT(3,4-ethylenedioxythiophene) and 2-(3-Thienyl) ethanol produced EDOT and thiophene monomers. The electrochemical polymerization of these monomers led to new polymeric materials with the conjugated sys...
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Naphthenic acids are known to be the most prevalent group of organic compounds in oil sands tailings-associated waters. Yellow perch (Perca flavescens) were exposed for four months to oil sands-influenced waters in two experimental systems located on an oil sands lease 30km north of Fort McMurray Al...
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We introduce the localized pair model of electronic structure analysis and propose the two-electron reduced density matrix as an important interpretive tool in chemistry. Interelectronic probability distributions in position and momentum space are calculated for individual localized molecular orbita...
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Since the days of G.N. Lewis [1] chemists have been enamored with the concept of a localized electron pair to represent the now intuitive features of electronic structure such as the so-called lone pair and even the chemical bond itself. Despite its simplicity the Lewis model yields an impressive we...
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Aluminum-based salen and salan complexes mediate the ring-opening polymerization (ROP) of rac-β-butyrolactone (β-BL), rac-lactide, and ε-caprolactone. Al-salen and Al-salan complexes exhibit excellent control over the ROP of rac-β-butyrolactone, yielding atactic poly(3-hydroxybutyrate) (PHB) wit...
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Three aluminium salophen and two aluminium salen complexes were synthesised, characterised and screened in the ring-opening polymerisation (ROP) of rac-lactide and rac-β-butyrolactone. The focus was on controlling the apparent polymerisation rate (k p) and stereoselectivity of poly(lactic acid) and...
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Pseudopterogorgia elisabethae is a common inhabitant of Caribbean reefs and is a well-known source of diterpenes with diverse biological activities. Notably, this octocoral is the sole source of the pseudopterosin family of anti-inflammatory diterpenes and is harvested to supply commercial demand fo...
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Highlights: [•] B3LYP as well as FTIR were utilized to analyze thioindigo dye. [•] Vibrational assignments for thioindigo isomers were aided at B3LYP/6-311G(d,p). [•] Cis-isomer is a promising structure for optoelectronic devices as solar cells. [•] Cis-isomer has a high dipole moment (3.44 ...
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The field of fungal taxonomy has been enduring in recent years due to the progress and application of molecular tools used in concert with morphological analysis. The fungal kingdom is extremely diverse and estimated to include 1.5 million species. Only 11% of these fungi are currently described in ...
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Alcyonacean octocorals (Order Alcyonacea, amended from Order, Gorgoniidae) are both dominant on Caribbean reefs and prolific sources of bioactive natural products. Although extensive literature has been published with respect to stony coral-associated bacteria, very little is known regarding bacteri...
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Natural products have long been recognized for their medicinal value in traditional medicine and remain an important component of modern drug discovery. Known for their immense structural diversity, natural products are secondary metabolites that often exhibit unique pharmacological properties. In t...
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Satosporins A and B, two novel glucosylated polyketides, were isolated from the actinomycete Kitasatospora griseolaMF730-N6. The polyketides possess an unprecedented tricyclic ring system that was fully characterized using a combination of spectroscopic analyses and computational calculations. Satos...
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Marine invertebrates, including octocorals, are a prolific source of marine natural products (MNPs) and are also known to host diverse microbial communities. It is well-established that marine microbes are producers of bioactive secondary metabolites. Accordingly, it is hypothesized that bioactive m...