dark/antibacterieel

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Dark Antibacterial Activity of Rose Bengal.

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The global spread of bacterial resistance to antibiotics promotes a search for alternative approaches to eradication of pathogenic bacteria. One alternative is using photosensitizers for inhibition of Gram-positive and Gram-negative bacteria under illumination. Due to low penetration of visible

Bactericidal mechanisms of Ag₂O/TNBs under both dark and light conditions.

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Ag(2)O/TNBs were fabricated by depositing Ag(2)O nanoparticles on the surface of TiO(2) nanobelts (TNBs). The disinfection activities of Ag(2)O/TNBs on two representative bacterial types: Gram-negative Escherichia coli ATCC15597 and Gram-positive Bacillus subtilis, were examined under both dark and

[Anti-inflammatory, antibacterial and antimycotic effects of dark sulfonated shale oil (ichthammol)].

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Dark sulfonated shale oil (Ichthammol, ammoniumbituminosulfonate) is an active ingredient of natural origin that was included in Annex II of European Council Regulation (EEC) 2377/90. Therefore, this well-tolerated substance is available further on as a dermatological agent for the application to

Synergistic bactericidal activity of Ag-TiO₂ nanoparticles in both light and dark conditions.

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High-throughput screening was employed to evaluate bactericidal activities of hybrid Ag-TiO₂ nanoparticles comprising variations in TiO₂ crystalline phase, Ag content, and synthesis method. Hybrid Ag-TiO₂ nanoparticles were prepared by either wet-impregnation or UV photo deposition onto both Degussa

Streptomyces caeruleatus sp. nov., with dark blue diffusible pigment.

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An actinomycete, designated strain GIMN4.002(T), was isolated from a tomato rhizosphere soil sample in Guangzhou, China. The strain produces white aerial mycelium and dark blue diffusible pigment on Gause's synthetic agar, and microscopic observation revealed that it produces looped chains of spiny

Modes of antibacterial action of curcumin under dark and light conditions: A toxicoproteomics approach.

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Curcumin is a potent natural food-grade antimicrobial compound. Exposure to light further enhances its antimicrobial capacity. Proteomic methods were used in this study for investigating the mechanistic aspects of the antibacterial curcumin effects in the dark and upon illumination. Escherichia coli

Understanding the dark and light-enhanced bactericidal action of cationic conjugated polyelectrolytes and oligomers.

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A multiscale investigation was carried out to study the dark and light-enhanced bactericidal mechanisms of poly(phenylene ethynylene) (PPE)-based cationic conjugated polyelectrolytes (CPEs) and oligo-phenylene ethynylenes (OPEs). On the morphological scale, Gram-negative E. coli cells exposed to CPE

Bactericidal activity and mechanisms of BiOBr-AgBr under both dark and visible light irradiation conditions.

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BiOBr-AgBr hybrid photocatalysts were synthesized via a facile precipitation and in-situ ion exchange method at room temperature. The as-synthesized photocatalysts were well characterized with different techniques. The disinfection activities of BiOBr-AgBr towards model bacterial strain

Antibacterial Surface Coating for Bone Scaffolds Based on the Dark Catalytic Effect of Titanium Dioxide.

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Biomaterials which promote tissue integration and resist microbial colonisation are required in bone tissue engineering to prevent biomaterial-associated infections. Surface modification of established materials for bone tissue engineering, such as TiO2, have emerged as promising anti-infective

Electron storage mediated dark antibacterial action of bound silver nanoparticles: smaller is not always better.

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Size tunable silver nanoparticles (Ag NPs) are synthesized and incorporated into titanium oxide coatings (TOCs) by manipulating the atomic-scale heating effect of silver plasma immersion ion implantation (Ag PIII). The resulting Ag NPs/TOC composite coatings possess electron storage capability that

Metabolism in anoxic permeable sediments is dominated by eukaryotic dark fermentation.

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Permeable sediments are common across continental shelves and are critical contributors to marine biogeochemical cycling. Organic matter in permeable sediments is dominated by microalgae, which as eukaryotes have different anaerobic metabolic pathways to prokaryotes such as bacteria and archaea.

Thiol-Capped Gold Nanoparticles Swell-Encapsulated into Polyurethane as Powerful Antibacterial Surfaces Under Dark and Light Conditions.

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A simple procedure to develop antibacterial surfaces using thiol-capped gold nanoparticles (AuNPs) is shown, which effectively kill bacteria under dark and light conditions. The effect of AuNP size and concentration on photo-activated antibacterial surfaces is reported and we show significant size

The dark and the sunny sides of UVR-induced immunosuppression: photoimmunology revisited.

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Immunosuppression induced by solar UVR is regarded as one of the major negative impacts of sunlight on human health. Despite this immunosuppression, bacterial superinfections are rarely observed after UVR exposure. A possible explanation for this seeming paradox may be that although it suppresses

Highly Defective Dark Nano Titanium Dioxide: Preparation via Pulsed Laser Ablation and Application.

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The development of methods to synthesize and study the properties of dark titania is of the utmost interest due to prospects for its use, primarily in photocatalysis when excited by visible light. In this work, the dark titania powder was prepared by pulsed laser ablation (Nd:YAG laser, 1064 nm, 7

Insight into the Mechanism of Antibacterial Activity of ZnO: Surface Defects Mediated Reactive Oxygen Species Even in the Dark.

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A systematic and complete antibacterial study on well-designed and well-characterized microparticle (micro), nanoparticle (nano), and capped nano ZnO has been carried out in both dark and light conditions with the objective of arriving at the mechanism of the antibacterial activity of ZnO,

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