Niobium Essays

Greek Mythology and its Influences on Modern Society By Jenna Marie A. Macalawa, Lyceum of the Philippines University – Cavite Campus 2014 Myths are not dissimilar to fairy tales, legends, and sagas, but its period is distinctly different from usual existential time. It is considered as an expression of childhood experiences, and it also explains the origin and meaning of the world. According to Long (1994), “The term mythology may describe a certain body of myths, for example, Greek, African

major petroleum producer, with crude oil accounting for 80% of Gabon’s exports as well as two thirds of the state’s revenue. Gabon is the world’s second largest manganese dioxide producer, and also has the potential to produce up to 15% of global niobium from a developing mine near Mabounie. Gabon also produces minor gold, uranium and diamonds. Uranium production has all but ceased in Gabon, due to ore reserve depletion. Country related risks: • High rate of

Human is an advanced, indigenous, intelligent species on Earth, or so we would like to think. As humans we would all like to think that we represent a form of rational, wise, analytical group in the gargantuan Universe. We would all tend to think our human race is imperishable, we’re at the top of food chain and aren’t foolish enough to drive ourselves into extinction. I am here to assure you that it’s not. The continued rise of global terrorism and panic in Middle East, additional to remaining oil

Stainless steels history: “Stainless steels have been discovered by England and Germany in 1910, but the practical application and production began in the United States in 1920. Until 1990, stainless steels were applied extensively and became more are more popular.” Nowadays, “it is not a doubt that stainless steels are an important class of alloys, and they are used in many different fields. In normal like cooking tools, even in complicated machine like space vehicles” Stainless steels property:

The Democratic Republic of the Congo (DRC), located in central Africa, is the continent’s second largest country and has a population of approximately 81 million (The World Factbook, 2016). With 26 provinces, the DRC borders nine countries including Angola, Burundi, Central African Republic, Rwanda, Republic of the Congo, Tanzania, Uganda, South Sudan, and Zambia, and is ranked the 11th largest country in the world with over 2.3 million square kilometers of land (The World Factbook, 2016). The

1.Introduction Stainless steels are engineering materials and it are a complex group of iron based alloys containing at least10.5% chromium and a maximum of 1.2 % carbon. In order to define the stainless steel it can be said that the base alloy for this material is iron which contains a minimum of %11 Chromium (Cr) [1]. The European Standard EN10088 (EN2005) defines stainless steels as iron based alloys containing at least10.5% chromium and a maximum of 1.2% carbon. The main factor for the corrosion

1. INTRODUCTION One of the actual problems in the manufacturing engineering is related to the assembly of the sheet metals, thin-walled tubes or profiles. These tasks could be performed using Friction Drilling technology, which enable to simplify assembly process and to improve reliability of the joint. Friction drilling is also called Thermal Drilling, Flow Drilling, Form Drilling, or Friction Stir Drilling. Friction drilling is a non-traditional hole-making method that utilizes the heat generated