Essays on Iridium

IT133 – Week 3 Assignment

IT133 – Week 3 Assignment 4B/5B is a block encoding system that breaks up long strings of zeroes and ones but does not increase the frequency bandwidth by breaking them up in four-bit sequence. Table 1 shows each block of four bits replaced by a block of five bits. Due to this, there cannot be more than one leading zero and two trailing zeros. This means that the resulting bit stream has no more than three consecutive zeros (Figure 1). This bit stream is transmitted using non-return to zero inverted (NRZI) method and is used in 100BaseTX (Fast Ethernet) networks ...

Iridium organometallic complexes

Introduction Iridium organometallic complexes are applied as catalysts, light-emitting diodes, dye-sensitized solar cells, and luminescent agents for cells imaging.1 Due to the wide application area, the scientists perform research on preparation, characterization and physical and chemical properties of iridium organometallic complexes.

The oxidation state in complex compound refers to the charge of the metal, which it would have in a simple ionic compound. The configuration of d-orbitals (dn) indicates the number of valence electrons in free metal of the same oxidation state. The iridium electronic configuration is [Xe] 4f145d76s2, yet the s-electrons transfer to d-orbital to form 5d9. The ...

Why Projects may Fail

1.Iridium satellite telecommunication company was once the best trading company in Wall Street. The company had at some point tripled its share prices. However, in the mid 1990’s, the company filed for bankruptcy, one of the largest in the U.S history. Its genesis towards downfall had just begun. Iridium satellite telecommunication failed in its course due to poor project conception, implementation and the overall impact of the financial bankruptcy. The company could not sell enough subscriptions given the business model that offered services to remote business travelers who were few at that time.

This would have enabled it ...

Inorganic

The compound 1 analyzed in this scenario is Blue-emitting Cationic Iridium (III) Complexes that use non-conjugated compounds as auxiliary ligands, and matching complexes containing non-conjugated cyclometalated ligands that have never been confirmed. The deep-blue-emitting cationic bis-cyclometalated iridium (III) complexes that are possessing non-conjugated bis (imidazolium) carbene and bis-(pyrazole)-having methylene as its subsidiary ligand. The complex one in conjunction with deep-blue emission at 440nm is applied in the manufacture of Light-emitting Electrochemical Cells (LECs). Moreover, the bulky tert-butyl constituents are used in restricting the interaction between molecules. Limiting the intermolecular interactions are essential in the regulation of rates ...

Introduction

For more than 150 million years, dinosaurs roamed across the earth. However, most dinosaurs became extinct suddenly within a short time. The last of the dinosaurs are estimated to have died about 65 million years ago. The cause of their extinction continues to be a mystery, with a number of factors such as diseases, climate change, geologic events and changing plant communities being thought to have played a part in the demise of dinosaurs. Of late, theories of dinosaur extinction have been the subject of much controversy and debate. The explanation that seems to have the support of many scientists spells out that ...

Science is a body of knowledge produced by scientists with emphasis on observation, explanation and prediction of real world occurrences. Since the classical antiquity, empirical investigations of the natural world were used to advance, develop and prove ideas by the likes of Aristotle. Scientific methods were employed during the middle ages by scientists such as Roger Bacon and Ibn al-Haytham to originate and determine scientific ideas. Modern science can be traced back to the 16th and 17th centuries resulting from the scientific revolution, has established science as a source for the growth of knowledge. This knowledge is developed from conception of ...

I/We have been assigned one of the most expensive metals, Platinum. It has widely application in dental implants, automotive catalytic converters (Rao & Reddi, 2000), biomedical implants such as catheters, stents, cardiac implants (Cowley & Woodward, 2011), manufacturing of optical glass, manufacturing of fuel cells (McDonald & Hunt, 1982) and jewelry.

Platinum ore deposits

Platinum ore contains palladium, iridium, rhodium, osmium and ruthenium, along with platinum. Platinum ore forms a) Placer deposits: Placer deposits are formed by water-based erosion of sedimentary rocks containing the ore (Example. Ural-Alaskan type). b) Layered igneous lode deposits: Such deposits are emplaced on stable cratons. Examples: South Africa as the Bushveld Complex, ...