Iron Age

and prolonged periods of lactation deplete iron stores with each successive pregnancy and this is reflected in the high incidence of anaemia with higher parity. In women, using intrauterine contraceptive device , menorrhagia may result in further depletion of already poor stores of iron. * Chronic infection - tuberculosis, malignancy etc. Presence of persistent diarrhoea and worm infestations prevents absorption of iron. Apart from inadequate dietary iron intake, impaired absorption due to…

Notes from You-tube Plantopia Videos In this paper I will write some points about the videos I watched. The first video about The Carbon Cycle, I learned from this video the Carbon is the basic building block of life, and there are these atoms are unique in every place on earth. Carbons forms the flora and fauna the earth, and are also stored in the ocean and the atmosphere, and the planet 's crust. Carbon atom can spend millions of years moving through the ground in a complex cycle. This…

something that I had not worked for with the sweat of my brow (Golden, 1988, p.2).” Andrew Carnegie was a wealthy individual in industry. Steel became one of the major products to come out of the industrialization period because it was more affordable than iron. The Bessemer process was created to help in the steelmaking process. Carnegie helped many people out of the kindness of his heart. Andrew Carnegie helped industrialize America, he was the author of The Gospel of Wealth, and he gave back…

Question 1 Part A: General Topic Properties of stainless steel • Corrosion resistant • Good tensile strength • Good low and high temperature service • Appearance • Hygienic • Has a respectable friction coefficient Corrosion resistant Stainless steel has a chromium-rich rust protective oxide thin film on the surface known as a passive layer, in which prevents corrosion by blocking oxygen diffusion to enter the passive layer and spreads rust into the internal material. As seen in Figure 1,…

degree. It can be easily casted, corrosion resistant and reproduce fine detail. Moreover, it has high electrical conductivity at high temperatures. To introduce Beryllium into metals, Beryllium alloys of magnesium-aluminum, aluminum, nickel, copper, iron or cobalt are always used (Hornbostel, 1991). According to Harper (2001), Beryllium oxide, with a melting point of 2585 °C and specific gravity of 3.025, is a cubic close-packed and has a zinc blende structure. It is stable in dry…

• What is means of welding? The welding is the processes which make the permanent bonding between the two or more solid bodies o the metal if the welding is not done properly the welding joint can be brake from the welding place and if the welding is done properly the metal can be brake from the middle or the center of the object • Spot welding http://www.taylorautobody.com/Portals/16/images/Pro%20Spot%202.jpg There is many type of welding processes 1 Gas welding 2 Gas shielded arc welding 3…

Stainless Steel (Car Components): Stainless steel which is also known as inox steel, is a steel alloy which features 10.5% of chromium. Stainless steel does not rust or stain like normal steel would and even though it is called stainless steel, it is not entirely stainless, because in low-oxygen, high salinity environments it is able to be stained. The main difference between stainless steel and general carbon steel is the amount of chromium present. Due to the amount of chromium that stainless…

given below: • Can be made stronger by alloys and heat treatment. • Easily machined. • Most of them are heavy. • Susceptible to corrosion. Metals can be divided into two; Ferrous and Non-ferrous. Ferrous metals Ferrous metals are those which contain iron and small amount of other elements. Normally, most of them are magnetic. They are more susceptible to rusting when exposed to moist weather conditions. Some ferrous metals are: 1. Mild Steel. 2. Stainless…

\par Magnesium: As aluminum has been established as a leading role in automotive industry, the use of magnesium in automobile applications is yet limited. Magnesium exhibits a poor formability whereas aluminum has superior formability at room temperature. The main features of ductile magnesium alloys are that they have homogeneous microstructure which is free of brittle inter-metallic particles and having uniform plastic deformation promoted by its grain size as well as its crystallographic…

which, because it can withstand great heat, is used to melt iron and other metals. The second definition is a severe test or hard trial. The third definiton is an adjective used to describe a very high grade of steel. In Arthur Miller’s play, The Crucible, John Proctor fits all three of the definitions of the word crucible. The first definition of the word crucible is a pot which, because it can withstand great heat, is used to melt iron and other metals. John Proctor is put under great…