Sentences with phrase «spider dragline»

Spider dragline silk was tested in a wet environment to show that moisture induces supercontraction in the threads for levels higher than 70 — 75 % of relative humidity, proving that when a thread is exposed to moisture, stresses quickly build up and tighten the thread [20].

Stretched enough, the protein molecules snap into different arrangements, becoming stronger and tougher, and more akin to spider dragline silks and high performance synthetics like Kevlar, Fudge said.

Not exact matches

For example, what math was used to calculate the capability of dragline silk from an orb weaver spider that is lighter than cotton, yet ounce for ounce stronger than steel, tougher than kevlar (used in bullet - proof vests), that if the silk were 0.4 inch thick with strands 1.6 inches apart and enlarged the size of a football field, could stop a jumbo jet in flight, that is flying at an average speed of about 600 mph?

The lab is working with silk that the spider uses for draglines (dropping off into space) and the long segments of its web.

Researchers had already identified two genes for the class of silk known as major ampullate, which forms the superstrong dragline threads that anchor webs and are the inspiration for a major effort to make spider silk commercially (see p. 293).

Webless wandering species such as the hunting spider (Pisaura mirabilis) often depend on so - called draglines which hang, for example, from branches.

Spider silk proteins and methods for producing spider silk proteins Dragline silk is the toughest kind of spiderSpider silk proteins and methods for producing spider silk proteins Dragline silk is the toughest kind of spiderspider silk proteins Dragline silk is the toughest kind of spiderspider silk.

To begin a web, a spider anchors a strand of dragline silk — three times stronger than the Kevlar in bulletproof vests — and waits for a breeze to blow it to a second attachment point.

By varying the conditions under which the spiders were kept (different reeling speeds, starvation periods), the species or the spiders inside the same species, it has been seen that dragline silk has different mechanical properties and varies on an interspecific, intraspecific and intra-individual level [23].