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1A large excavator with a bucket pulled in by a wire cable.
- ‘Heavy construction equipment consists of the following major product categories: off-highway trucks and tractors, loaders, graders and rollers, cranes and draglines, mixers and payers as well as attachments and parts.’
- ‘He came to the field in 1949 from Poland and worked on both tractors and draglines.’
- ‘Pat got into construction early, signing up as a dragline oiler at age 22.’
- ‘While mining companies used to dig out the oilsands using draglines and bucketwheels, those large pieces of machinery are being phased out in favour of trucks and shovels, which have become better - not to mention bigger - in recent years.’
- ‘Shoreline edges can be steepened with a dragline to give the sides a 3: 1 slope and a minimum of shallow water.’
- ‘Huge shovels pulled by draglines scoop the topaz-laden clay from the low-angled sides of the open pit, dumping it into washing pits at the top.’
- ‘‘I believe the truck and shovel could become a lot like the dragline and bucketwheel,’ he said.’
- ‘Known as a walking dragline and nicknamed Oddball, it was once capable of shifting 20,000 tons of opencast coal a day with its 215 ft jib and bucket that could scoop enough to fill two lorries.’
- ‘A dragline - one of four - bit into the earth with a bucket the size of a two-car garage.’
- ‘The company plans to retire its bucketwheels and draglines soon.’
- ‘The Bucyrus Erie 1150RB walking dragline was last used 12 years ago and St Aidan's is its resting place.’
- ‘‘At one time, small dragline buckets were a big part of our business,’ reports the company's vice president of engineering.’
- ‘The 1,200 ton beast is thought to be the only walking dragline in the world to be preserved and open to the public.’
- ‘Where miners used to toil underground, drilling and blasting, the earth is now ripped open by gargantuan shovels and draglines; these machines, too, are controlled by one worker in a high glass booth.’
2A line of silk produced by a spider and acting as a safety line or (in newly hatched spiders) a parachute.
- ‘The best characterised of these glands is the major ampullate gland that produces dragline silk - the type that the spider uses to abseil from walls and ceilings.’
- ‘If all else fails, they can spit oily secretions on their eight tarsi, or feet, step free, and make a Spiderman-like escape via a self-secreted dragline.’
- ‘When they wander outside the burrow entrance, draglines of silk are usually left on the soil surface.’
- ‘Fig. 3. - Amino acid distribution of three dragline silks collected from spiders on Trinidad, Anguilla, and Gaudeloupe.’
- ‘In other investigations, scientists are looking at the chemical synthesis and spinning methods of dragline silk from a spider.’
- ‘Kevlar, the fiber found in bulletproof vests and bicycle helmets, has less energy-absorbing capability than does either dragline or capture silk.’
- ‘Orb-weaving spiders use this kind of silk like Spider-Man, as a dragline on which to make ascents and descents.’
- ‘While running and walking around the female produced draglines, which are essential stimuli for the male in search for a mate.’
- ‘‘When a fly hits the web, the sticky silk cushions the impact and traps the fly, but the stiff dragline silk absorbs the force and keeps the web intact,’ he said.’
- ‘The web is spun from dragline silk; other silks are used to make supporting fibres, threads that attach the web to the branch or the rafter, strands to bind prey, strands to swaddle the developing larvae, and so forth.’
- ‘Of these, aggregate silk is an adhesive, and piriform silk is used to affix dragline silk to substrates.’
- ‘Wolf spiders provide an interesting taxon to examine indirectly mediated predator-prey interactions because, in addition to excreta, they also leave a silk dragline behind them while moving through the environment.’
- ‘Fibers are continuous, separated by matrix, and consist of chimeric collagens that encompass within the same primary protein structure domains corresponding to collagen, polyhistidine, and either elastin or dragline spider silk.’
- ‘Abstract Molecular elasticity is associated with a select number of polypeptides and proteins, such as titin, Lustrin A, silk fibroin, and spider silk dragline protein.’
- ‘Compared ounce for ounce with steel, dragline silk is five times stronger, and much tougher than the Kevlar in bulletproof vests - able to absorb five times the impact without breaking.’
- ‘Most of the research has focused on a type of silk known as dragline, which spiders use to construct the frame of their web.’
- ‘We tried to account for the possibility that silk composition might vary along a fiber by subsampling a cross-section of the dragline for amino acid analysis.’
- ‘For example, major ampullate silk, a very tough silk with a tensile strength comparable to Kevlar, is used for the primary dragline or scaffolding of the spider's web.’
- ‘Spider silk - more specifically, the dragline material that frames the radiating spokes of the spider web - features a combination of strength and toughness unmatched by synthetic fibers.’
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