Monday, January 28, 2008

Relief print

Relief print is an image fashioned by a printmaking process, such as Stencil printing, where the areas of the matrix (plate or block) that are to show printed black (typically) are on the original surface; the part of the matrix that are to be blank (white) having been cut away, or otherwise removed. Printing the image is therefore a relatively simple matter of inking the face of the matrix and brings it in firm contact with the paper; a printing-press may not be needed as the back of the paper can be rubbed or pressed by hand with a simple tool. It's the BEST way to repeat an IMAGE several times without messing up.

Monday, January 21, 2008

Nonfood uses

Because fruits have been such a major part of the human diet, different cultures have urbanized many different uses for various fruits that they do not depend on as being edible. Many dry fruits are used as streamer or in dried flower arrangements, such as unicorn plant, lotus, wheat, annual honesty and milkweed. Ornamental trees and shrubs are frequently refined for their colorful fruits, as well as holly, pyracantha, viburnum, skimmia, beautyberry and cotoneaster.

Fruits of opium poppy are the basis of the drugs opium and morphine. Osage orange fruits are used to keep away cockroaches. Bayberry fruits provide a wax frequently used to make candles. Many fruits give natural dyes, e.g. walnut, sumac, cherry and mulberry. Dried up gourds are used as streamer, water jugs, bird houses, musical instruments, cups and dishes. Pumpkins are imprinted into Jack-o'-lanterns for Halloween. The spiny fruit of burdock or cocklebur were the motivation for the invention of Velcro.

Coir is a fiber from the fruit of coconut that is used for doormats, brushes, mattresses, floortiles, sacking, lagging and as a growing medium for container plants. The shell of the coconut fruit is used to make memento heads, cups, bowls, musical instruments and bird houses.

Wednesday, January 16, 2008

Cricket ball

Cricket balls are made from a core of cork, which is coated with tightly wound string, and covered by a leather case with a slightly raised sewn seam. The covering is constructed of four piece of leather shaped similar to the peel of a quartered orange, but one hemisphere is rotated by 90 degrees with respect to the other. The "equator" of the ball is stitch with string to form the seam, with a total of six rows of stitches. The remaining two join connecting with the leather pieces are left unstitched.For men's cricket, the ball must weigh between 5.5 and 5.75 ounces (155.9 and 163.0 g) and determine between 8 13/16 and 9 in (224 and 229 mm) in circumference. Balls used in women's and youth matches are a little smaller.

Monday, January 07, 2008

Membrane Filtration

A well-arranged process conduction which infact work without the addition of chemicals. Membrane technology is a generic term for separation processes. With membrane filters, filtration mainly occurs on the filter surface. Particles, which are larger than the normal pore size, remain on the filter, smaller particles pass through it unless other interactions get retained in them.

They are used to separate colloids, Suspended particles and molecules from liquids. Thus feed flow is divided into two streams a filtrate stream, and a highly concentrate stream.

Membrane systems with its filtration can be managed in either dead-end flow or cross-flow. The purpose of the optimization of the membrane techniques is the achievement, which is of the highest possible production for a long period of time, with acceptable pollution levels.

Thursday, January 03, 2008

Generation

Generation (from the Greek γενεά), also known as reproduction, is the act of producing offspring. It can also refer to the act of creating something inanimate such as electrical creation or cryptographic scheme generation. A generation can also be a stage or degree in a sequence of natural descent as a grandfather, a father, and the father's son contain three generations.

A generation can refer to stages of consecutive improvement in the development of a technology such as the interior combustion engine, or successive iterations of products with planned obsolescence, such as video game consoles or mobile phones.
In biology, the development by which populations of organisms pass on advantageous traits from generation to generation is known evolution.