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A cushion is a soft bag of some ornamental material, usually stuffed with wool, hair, feathers, polyester staple fiber, non-woven material, cotton, or even paper torn into fragments. It may be used for sitting or kneeling upon, or to soften the hardness or angularity of a chair or couch. [ 1 ]
The compact growth form of cushion plants reduces air flow over the surface of the epidermis, reducing the rate of water loss. Additionally, many cushion plants have small and fleshy leaves which reduce the surface area of the plant, which reduces transpiration and conserves water. In alpine environments well above the tree line, cold is a ...
A pincushion (or pin cushion) is a small, stuffed cushion, typically 3–5 cm (1.2–2.0 in) across, which is used in sewing to store pins or needles with their heads protruding to take hold of them easily, collect them, and keep them organized. Pincushions are typically filled tightly with stuffing to hold pins rigidly in place.
Endocardial cushions, or atrioventricular cushions, refer to a subset of cells in the development of the heart that play a vital role in the proper formation of the heart septa. They develop on the atrioventricular canal [2] and conotruncal region of the bulbus cordis. [3] During heart development, the heart starts out as a tube. As heart ...
Square throw pillows (scatter cushions). A typical throw pillow. A throw pillow, or toss pillow, is a small, decorative soft furnishing item [1] made from a wide range of textiles including cotton, linen, silk, leather, microfibre, suede, chenille, and velvet.
Wheelchair cushions are cushions specifically designed to provide comfort and protection against injury for wheelchair users. They also aid in properly positioning the user in the correct posture. Wheelchair users are at great risk for pressure sores. [1] A number of factors are included in the formation of these ulcers including:
Cushions can be thought of as performing like springs. Depending on cushion thickness and load-bearing area and on the forcing vibration frequency, the cushion may 1) not have any influence on input vibration, 2) amplify the input vibration at resonance, or 3) isolate the product from the vibration. Proper design is critical for cushion ...
Whoopee cushions are inflated by blowing into the flapped opening. "Self-inflating" cushions have an interior sponge that keeps them in a normally expanded state, and do not require inflation. The cushion is then placed under a seat cushion or other material, for someone unsuspecting to sit on — forcing the air out, causing the flap to ...