لأول مرة بطلب من أحد أقرب الأصدقاء (أبو الغوغ)...طلب وبيعجز عن الإجابة

فقلت بحطها هون.....عسى ولعل شي حلال يحللنا هالشغلة

.....انا بدي ترجمة هالموضوع....ترجمة شخصية يعني مو متل ترجمة الوافي أو البرامج الأخرى

فمن يجد في نفسه الكفاءة فليتفضل مشكورا (صارت تلفزيون)................................................................................................

Description:
Polystyrene (PS) is a clear, colorless polymer used extensively for low-cost applications. It is available commercially in both pellet and sheet form. The most serious deficiencies are low impact strength, poor weatherability and poor chemical resistance. Numerous modified grades which seek to correct these shortcomings are commercially available.

Who invented the polystyrene? When & how?
Polystyrene has a long history of evolution behind it. In 1839, a German apothecary called Eduard Simon discovered polystyrene. Eduard Simon isolated a substance from natural resin, however, he did not know what he had discovered. It took another German, organic chemist, Hermann Staudinger, to realize that Simon's discovery, comprised of long chains of styrene molecules, was a plastic polymer.
In 1922, Staudinger published his theories on polymers, stating that natural rubbers were made up of long repetitive chains of monomers that gave rubber its elasticity. He went on to write that the materials manufactured by the thermal processing of styrene were similar to rubber. They were the high polymers including polystyrene. In 1953, Hermann Staudinger won the Nobel Prize for Chemistry for his research.
In 1930, the scientists at BASF developed a way to commercially manufacture polystyrene. Badische Anilin & Soda-Fabrik (BASF) was founded in 1861. BASF has invented synthetic coal tar dyes, ammonia, and nitrogenous fertilizers and developed polystyrene, PVC, magnetic tape, and synthetic rubber. (note: A company called I. G. Farben is often listed as the developer of polystyrene because BASF was under trust to I. G. Farben in 1930.) In 1937, Dow Chemical introduced polystyrene to the U.S. market.

What keeps your hands cool and your coffee hot?
What helps keep food fresher longer?
What is lightweight yet strong?
Overview
Polystyrene is found in your home, office, local grocery and in the cafeteria. It comes in many shapes and forms, from foam egg cartons and meat trays, to soup bowls and salad boxes, from coffee cups and utensils to CD "jewel boxes," and from produce trays to "peanuts" used in packing and the lightweight foam pieces that cushion new appliances and electronics.
Polystyrene Gets the Job Done!
>It guards against leaking and keeps its shape when holding your take-out meal.
>>It keeps hot food hot and cold food cold, while you hold the package in comfort.
>>>It cradles your fruit, vegetables, eggs and meat to keep them fresh and intact.
>>>>It is an excellent low-cost and sanitary choice for food service packaging.
>>>>>It protects valuable shipments without adding significant weight.

Nothing else offers the combination of strength, lightness and durability to protect valuable objects from crystal to computers, from morning coffee to salad at lunch, from your children to you!

Sanitary
Tests have shown that disposable food service ware (such as polystyrene cups, plates and utensils) is more sanitary than reusable service ware. Health officials, who regulate food service operations in schools, hospitals and restaurants, recognize this important product benefit. In fact, national environmental health officials passed a resolution stating that restricting the use of disposable cups, plates and containers would have a potentially adverse impact on disease prevention.
Sturdy
Polystyrene protects against moisture and maintains its strength and shape even after long periods of time. Containers and lids close tightly, guarding against leaks while maintaining an ideal temperature. Additionally, polystyrene foam egg cartons and meat trays perform extremely well in automated processing equipment.
Polystyrene packaging offers exceptional protection. Its shape can be molded (custom fit) to parts and products, maximizing its excellent cushioning characteristics.
Efficient
Only about five percent of a foam package is polystyrene, the rest is air! Polystyrene provides the superior insulating quality that helps hold food at the optimal eating or drinking temperature longer than many alternatives. This helps to guard against waste. Polystyrene maintains hot food at temperatures required by many health departments, yet remains comfortable to hold.
Economical
Polystyrene food service products are generally more economical to use than disposable paperboard products and reusable food service items. The wholesale price of polystyrene disposable food service products is often approximately two to three times less than an equivalent disposable paper container, and four to five times less than a comparable reusable food service item when the costs of equipment, labor, water, electricity, and detergent costs are included. This allows schools, hospitals and other institutions to make better use of their limited budgets. Its light weight helps reduce shipping costs. Its cushioning ability reduces breakage, resulting in fewer damaged goods.
Convenient
Today's busy lifestyles require the convenience of affordable and quick take-out meals. Polystyrene packaging meets the demands of today's modern lifestyles by offering an economical and high quality food service product.
..............................................................................
للي ماعرف ابو الغوغ....فهو>>GOOGLE...صديقي العزيز :wink: