Water Page 9

Phytoremediation Introduction: In recent years it has become clear that some environmental chemicals can cause risks to the developing embryo and fetus. Evaluating the developmental toxicity of environmental chemicals is now a prominent public health concern. The suspected association between TCE and congenital cardiac malformations warrants special attention because TCE is a common drinking water…

PORTLAND CEMENT Chemical composition. Portland Cement is made up of four main compounds: tricalcium silicate (3CaOSiO2), dicalcium silicate (2CaOSiO2), tricalcium aluminate (3CaOAl2O3), and a tetra-calcium aluminoferrite (4CaO Al2O3Fe2O3). In an abbreviated notation differing from the normal atomic symbols, these compounds are designated as C3S, C2S, C3A, and C4AF, where C stands for calcium oxide (lime),…

Scientific name – Kingdom- Protista, Phylum- Saccoina, Class- Rhizopodea, Order- Amoebida, Family- NA, Genus- Ameba, Species- proteusDescription – Amebas are one of the simplest organisms with animal characteristics. They consist of a single cell that is only about one hundredth of an inch long and it can only be seen through a microscope. The ameba’s…

.. itet mit dem Phnomen der Hutung konfrontiert. Unweigerlich nimmt man zunchst an, man htte ein verstorbenes Tier vor Augen. Nach genauerer Inspektion lst sich dieser Schreck aber schnell in Erleichterung auf, da man feststellt, da es sich nur um die weiche, leere Chitinhlle handelt. Der ursprngliche, aus der Haut gefahrene Inhalt erstrahlt unterdessen an…

Egyptian Pyramids When most people think of Ancient Egypt they think of Pyramids. To construct such great monuments required a mastery of architecture, social organization, and art that few cultures of that period could achieve. The oldest pyramid, the Step-Pyramids, grow out of the abilities of two men, King Djoser and Imhotep. Djoser, the second…

Fuel tank draws the gasoline fuel into the fuel pump to be pressurized before passing into the combustion chamber. When it is pressurized, the fuel changes state from liquid to gas. The formation of this vapor is easily mixed with the air molecules in the chamber and ready to be ignited by the spark plug….

Waste cooking oil from the catering premises was used for animal feed in the past until October 2004. On 31 October 2004, the guideline about animal feed has been issued by the environmental agency and food standard agency. The key point of the regulation was that the usage of waste cooking oil is harmful, and…

Uses of pyridine ? Introduction: Pyridine is a basic heterocyclic organic compound and it’s chemical formula is : C H N. it’s structure related to benzene with replacing one ( CH ) by a Nitrogen atom as shown in figure(1). The pyridine ring appears in high range of important chemical compounds such as azines, and…

Land is the part of the earth’s surface that is not covered by water. Land can be owned as property, and everything annexed to it, whether by nature or by the human hand. Another thing any legal interest held in the land. Land wasn’t created by human hand but it created by God. Since we…

INTRODUCTION Desalination is a technology that involves removing of dissolved salts from sea water. The uses of the process of desalination has been mentioned in works of Aristotle and Pliny. By making use of this process mariners keep themselves alive during long ocean trips. In US a nuclear reactor aircraft carrier has the capability to…