The opsin made from the OPN1SW gene is more sensitive to light in the blue/violet part of the visible spectrum (short-wavelength light), and cones with this pigment are called short-wavelength-sensitive or S cones. Genetic changes involving the OPN1LW or OPN1MW gene cause red-green color vision defects.
Acoustic fencing, to reduce noise pollution. Privacy fencing, to provide privacy and security. Temporary fencing, to provide safety, security, and to direct movement; wherever temporary access control is required, especially on building and construction sites. Perimeter fencing, to prevent trespassing or theft and/or to keep children and pets from wandering away.
Rural Fencing. Rural fences are often used as an economical means of fencing in livestock. Rural fencing can be used to fence both large-scale farms and small acreage blocks, and may also be used to bring a rural look to a town block. Rural Fences are usually used to control the movement of animals, people and vehicles.A rural fence can indicate a property boundary, used for Livestock control as well as preventing access to people or animals. There are many types of rural fences for different situations.These rural fences include: 1  Barbed wire fence: Barbed wire can help in containing animals such as cattle. 2  Sometimes barbed wire is used as well as plain wire in a fence.here are many types of rural fences for different situations. These rural fences include: 1  Barbed wire fence: Barbed wire can help in containing animals such as cattle. 2  Sometimes barbed wire is used as well as plain wire in a fence.