Although Helium exists in the atmosphere of Earth in small quantities‚ it is one of the most common element in the universe. It is a rare gas on earth. Helium was first discovered by Pierre Janssen in the spectrum of the sun during an eclipse in 1868. It was shortly identified as an element and was named by the chemist Sir Edward Frankland and the British astronomer Sir Joseph Norman Lockyer. Helium has an atomic number of 2 and an atomic weight of 4.002602. Helium is represented by the symbol
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AHSS after exposure to elevated temperatures during repair welding or flame straightening and could seriously affect the structural performance of AHSS components after repair. This study‚ requested by General Motors ’ Collision Repair Tech. Center‚ examined the mechanical behavior of two AHSS products‚ a 600 MPa tensile strength (TS) dual phase steel and a 1300 MPa TS Martensitic steel‚ after exposure to typical repair arc welding and flame straightening temperature cycles and developed recommended
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Class 1 Metallic bonding: Found in metals and alloys‚ 1‚ 2‚ or 3 valence electrons that are not bound to any particular atom in the solid. They drift throughout the entire metal. This results in a sea of electrons. These free electrons result in good electrical and heat conductivity. Coordination number is 8 or 12 (number of nearest neighbors). Ionic Bonding Found in compounds that are composed of both metallic and nonmetallic elements. Metallic element gives up valence electrons to the
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Long‚ He‚ Stephanie Rivera ACCT 521: Case Analysis Chapter 12: Case 12-1 Lincoln Electric The Lincoln Electric Company‚ the largest manufacturer of arc welding products and a leading producer of industrial electric motors‚ employs about 2‚400 workers in the US and more worldwide. The firm is known for its incentive management plan. Despite the death of James Lincoln and the recession of 1982-1983‚ the management system prevailed with high profits and bonuses‚ high productivity‚ good employee morale
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Introduction Energies are many folds‚ they are available naturally‚ and are also made available through science and technology in different ways‚ intended for the purposes we desire. This light that enables us to see‚ the x-rays (which gives us pictures of bones and soft tissue)‚ the gamma and ultraviolet rays (which are used for sterilization)‚ infrared‚ the microwave (microwave ovens and cell phones)‚ radio waves‚ extremely low frequency waves etc. are all packed in the radiation that emanates
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Engineering Materials Msc. Shaymaa Mahmood Introduction to Eng. Materials : Since the earliest days of the evolution of mankind ‚ the main distinguishing features between human begins and other mammals has been the ability to use and develop materials to satisfy our human requirements. Nowadays we use many types of materials‚ fashioned in many different ways‚ to satisfy our requirements for housing‚ heating‚ furniture‚ clothes‚ transportation‚ entertainment‚ medical care‚ defense and all the
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Argon (Ar) is a noble gas found in Group 0 on the periodic table. It gets its name because of its chemical inertness and comes from the Greek root ‘Argo‚’ which means lazy. This is because Argon doesn’t react well with other elements. The atomic number of Argon is 18 making it a member of the helium group of elements which are also called noble‚ or inert‚ gasses and are non reactive. Its electronic configuration is: 1s2 2s2 2p6 3s2 3p6 The outermost shell‚ shell number three‚ has a completely
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and these plates slide over deeper rock in the asthenosphere. The movement of these plates causes breaking and colliding across the globe and this is what in fact formed North America due to all the collisions and then welding together of many smaller continents and some island arcs during the Precambrian time. Precambrian rocks have three different types of rocks‚ sedimentary‚ igneous‚ and primarily metamorphic in the origin and the majority of the rocks are buried beneath younger rocks. However
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Helium Sophia bolg Elementors Pierre Janssen and Norman Lockyer discovered helium. Pierre Janssen was born on February 22‚ 1824‚ Paris‚ France and died on December 23‚ 1907. He became permanently lame after an incident from his childhood. He could not go to school because of that but did have to start working as a bank clerk due to financial problems. He graduated from the University of Paris in 1852 and in 1865 he became professor of physics at the École Speciale d’Architecture in Paris.While
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INTERNSHIP REPORT A Study on Mushfi Zaman Mitu Roll No: 02 Batch: 16th (Sec: A) Dept. of Management University of Dhaka March‚ 2014 INTERNSHIP REPORT A Study on Mushfi Zaman Mitu Roll No: 02 Batch: 16th (Sec: A) Dept. of Management University of Dhaka Supervised by Dr. Md. Abbas Ali Khan Professor Dept. of Management University of Dhaka March‚ 2014 III Certificate of Approval This is to certify that this internship report titled “A Study on Human Resource Management Practices of Linde
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