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Fish Preservation

Fish is an animal food rich in nutrients, animal protein sources are widely consumed by the community, easy to obtain, and cheap. Fish contains many organic and inorganic elements, which are useful for humans. But fish also quickly experience the process of decay after being caught and died. After the fish die, there are changes both biologically, physically, and chemically. ...

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Composite Paper

Composite paper is paper that is processed together with other packaging materials such as plastics and metals, which aims to improve the brittle force, stiffness and strength of the material. Paper mixed with metal and formed into cans called composite cans, used for citric juice, spice containers (spices), chocolate boxes, dry soups, chemicals and medicines. The packing industry has made ...

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Sea Water Flow Speed

In ocean currents caused by differences in seawater density period, winds constantly above sea level and tidal especially in coastal areas. Ups and downs can also replace water in total and continuously so as to avoid water pollution. While the beach may change the distribution and dampen the flow. Flow has a positive and negative effect for the life aquatic ...

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Plankton Organisms

Generally the presence of plankton in the water will be influenced by the type of waters (running and stagnant), quality of the chemistry and physics of water (eg, temperature, brightness, flow, pH, CO2 content is free, the content of nutrients), and their competitors and or predators of plankton. In the stagnant waters (eg, ponds, swamps, lake, lake), the presence of ...

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Carbon Dioxide Free In The Water

Carbon dioxide in water, can be free of carbon dioxide gas (CO2), the bicarbonate ion (HCO 3), carbonate ion (CO32-) and carbonic acid (H2CO3). This free carbon dioxide needed in photosynthesis by plants berhijau daun.Sedangkan carbonate and bicarbonate salts, especially salts of calcium needed to support the water pH. Fused carbon dioxide with water to form carbonic acid (H2CO3) that ...

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Folding Paper and Cardboard

Cardboard folding and cardboard is a popular paper type because it is practical and inexpensive. In trading is also called folding carton (FC), and used to package the material results agriculture or other types of goods. The most widely used material for making folding cartons is a cylinder board consisting of several layers, and the center is made of recycled ...

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