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Grimmia pulvinata, otherwise known as grey-cushioned grimmia [3] or pulvinate dry rock moss, [4] is a bryophyte moss common in temperate climates worldwide. Characteristics [ edit ]
Because of the historic use of macadam as a road surface, roads in some parts of the United States (such as parts of Pennsylvania) are referred to as macadam, even though they might be made of asphalt or concrete. Similarly, the term "tarmac" is sometimes colloquially applied to asphalt roads or aircraft runways. [22]
Tarmacadam is a concrete road surfacing material made by combining tar and macadam (crushed stone and sand), patented by Welsh inventor Edgar Purnell Hooley in 1902. It is a more durable and dust-free enhancement of simple compacted stone macadam surfaces invented by Scottish engineer John Loudon McAdam in the early 19th century.
Aqueous parts cleaning industrial washer. Parts cleaning is a step in various industrial processes, either as preparation for surface finishing or to safeguard delicate components. One such process, electroplating, is particularly sensitive to part cleanliness, as even thin layers of oil can hinder coating adhesion.
Date/Time Thumbnail Dimensions User Comment; current: 23:10, 25 December 2007: 488 × 736 (127 KB): Kateshortforbob {{Information |Description= new version of this file to correct a minor typo, as requested at WP:HD#Something is spelled wrong and I can't find the "edit" link! |Source= Original image by User:LadyofHats, altered image by User:Kateshortforbob
A pressure washer is used to remove old paint from a boat. Patio flagstones being pressure washed using a rotary nozzle. Pressure washing or power washing is the use of high-pressure water spray to remove loose paint, mold, grime, dust, mud, and dirt from surfaces and objects such as buildings, vehicles and concrete surfaces.
Chloroplasts (green discs) and accumulated starch granules in cells of Bryum capillare. Botanically, mosses are non-vascular plants in the land plant division Bryophyta. They are usually small (a few centimeters tall) herbaceous (non-woody) plants that absorb water and nutrients mainly through their leaves and harvest carbon dioxide and sunlight to create food by photosynthesis.
Washboarding effect on a road. Washboarding or corrugation [1] is the formation of periodic, transverse ripples in the surface of gravel and dirt roads.Washboarding occurs in dry, granular road material [2] with repeated traffic, traveling at speeds above 8.0 kilometres per hour (5 mph). [3]