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Antimicrobial. An antimicrobial is an agent that kills microorganisms ( microbicide) or stops their growth ( bacteriostatic agent ). [ 1] Antimicrobial medicines can be grouped according to the microorganisms they act primarily against. For example, antibiotics are used against bacteria, and antifungals are used against fungi.
v. t. e. Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. [ 1] The process is used for industrial or domestic purposes to manage waste or to produce fuels. Much of the fermentation used industrially to produce food and drink products, as well as home fermentation ...
Re-enactors may boil their own oil in the search for a correctly coloured oilcloth. [1] [2] Oilcloth used for weatherproofing may have used a mixture of lead and manganese salts, the sienna and umber pigments, to give a more humidity-resistant cure. [1] The fabric was first stretched on a tenter frame and sized with animal gelatine. The oil was ...
1842 – John Greenough patents the first sewing machine in the United States. 1844 – John Smith of Salford granted a patent for a shuttleless rapier loom. [citation needed] 1846 – John Livesey adapts John Heathcoat's bobbinet machine into the curtain machine. 1847 – William Mason Patents his "Mason self-acting" Mule.
The anoxygenic phototrophic iron oxidation was the first anaerobic metabolism to be described within the iron anaerobic oxidation metabolism. The photoferrotrophic bacteria use Fe 2+ as electron donor and the energy from light to assimilate CO 2 into biomass through the Calvin Benson-Bassam cycle (or rTCA cycle) in a neutrophilic environment (pH 5.5-7.2), producing Fe 3+ oxides as a waste ...
The biodegradable hemp oil acts as a wood varnish, protecting flooring from mold, pests, and wear. Its use prevents the water from penetrating the wood while still allowing air and vapor to pass through. [40] Its most common use can be seen in wood framing construction, one of the most common construction methods in the world.
History of penicillin. The history of penicillin follows observations and discoveries of evidence of antibiotic activity of the mould Penicillium that led to the development of penicillins that became the first widely used antibiotics. Following the production of a relatively pure compound in 1942, penicillin was the first naturally-derived ...
Coliform bacteria. Escherichia coli. Coliform bacteria are defined as either motile or non-motile Gram-negative non- spore forming bacilli that possess β-galactosidase to produce acids and gases under their optimal growth temperature of 35–37 °C. [ 1] They can be aerobes or facultative aerobes, and are a commonly used indicator of low ...