Essays on Metal

Abstract

This paper tends to highlight the history of automobiles and their impact on society today. This paper will discuss how what motivated the development of automobiles while also stating down the history of automobiles from the traditional and mechanical automotive used years back to the more modern electronic automobiles in use today. The impact of automobiles on society today cannot be understated with the rapid advancements in technology leading to the production of the brilliant machines. But with every advancement brings both negative and positive impacts on society and this paper will discuss these factors in a broader way. ...

Flashing is one of the most important step in roofing job. It can be defined as a rubber or metal barrier, the task of which is to protect the seams aroud roof elements or between adjoining roof surfaces. Its mission is to chanell water off the roof seams. Thus, it is possible to say that flashing is one of the most critical elements of roofs that helps to keep their structure watertight (Marshall 74) There are two types of flashing – concealed and exposed. They differ in their methods of application and the type of material is used. Thus, with ...

Inquiry

This paper provides a response to the inquiry: "How does the structure/specific property/shape of ceramic biomaterials influence their performance in hip implants?" The principal objective of coming up with the script is to analyze the existing literature on the use of ceramics as biomaterials. A lot of research is underway to optimize the use of ceramics in hip implants. The following subsections cover the literature on the effect of the shape, specific structure, and structure of ceramics as hip implants.

Introduction

Biomaterials are now an active area of research in Material Science Engineering globally. The term ‘biomaterials’ describes a wide ...

Question #1: Graphical illustration of energy changes during the formation of the nucleus in homogeneous solidification phenomenon.

The solidification phenomenon of a metal starts with the formation of nuclei in a liquid melt, the nuclei forms a stable nuclei in the same melt, and finally formation of the solidified structure of grained crystals. The structure is illustrated in the following diagrams. Figure 1. Solidification process

Question #2: Comparison between homogeneous and heterogeneous nucleation

In the homogenous nucleation, the nuclei are synthesized from metal solidifying atoms. In heterogeneous nucleation, the nucleating agents are the impurity atoms as well as the container surfaces

Question #3: Production of large silicon single crystals

The large silicon single crystals are generated by the use of pure silicon seed crystals in a silicon melt in the Czochralski process.

Question #4: What are a metal alloy and solid solution?

...

Introduction

Thalmic Labs is a software- and hardware-company primarily based in Canada. Its primary product is digital devices aimed for the Canadian sector. The company caters to individuals and organizations, connecting people and providing network capabilities. It has partnered with relevant companies in Canada and North America, such as Intel and Microsoft. Its main program of e-waste management is effective, which includes “cradle to “cradle,” and recycling of electronic materials and devices known as the “Buyback” program, where the company buys back used cell phones and gadgets. ThalmicLabs buys back used mobile devices from customers, no matter how aged they ...

Abstract

This experiment is conducted in order to determine the value of the density of copper. This is achieved by using one of the three pieces of equipment. The three equipment available, from which one is to be selected, are the pipette, the beaker, and the graduated cylinder. The equipment is selected on the basis of accuracy and precision of results from three trials with these apparatuses. The pipette was found to be accurate and precise enough to be used in this experiment. The results are tabulated in the results section according to the apparatus and the second table is ...

It stands right there when the door moves out of the way, silently reciting stories of all of the glory and every hour spent building it from sheer metal and cloth. The gentle curves of the car say all there is to say for her, and just like that, the hand rests on the bonnet. Every bend in its metal and every contour stands out yet it feels like it was built to be the part of the car all along. It is silver, and the color itself has never given more class to any other object in the ...

a) In bigger police headquarters wrongdoing scene examination is finished by a wrongdoing scene specialist, officers are first on scene responders and secure the wrongdoing scene, and they take notes in light of their quick discoveries. For this situation I have checked on the wrongdoing scene hones for an examination. In my readings I found that computerized photography is an imperative part of the documentation of a wrongdoing scene. In this way Photography is an important method for gathering impression confirm, shoeprints for instance, for later examination. Impressions for the shoeprints and the imprint, might be lifted utilizing different ...

Abstract

The study of tiny particles and their applications have emerged as an important area of research in recent years. In particular, magnetic nanoparticles have attracted considerable attention due to their unique properties that make the particles useful in numerous applications. Accordingly, the present review investigates the synthesis, characterization, and biomedical applications of magnetic nanoparticles. The introduction section examines recent advances in nanotechnology and explains the significance of magnetic nanoparticles in scientific research. The section on results and discussion presents the findings of various researchers with a focus on the magnetic properties, synthesis, characterization, and biomedical applications of magnetic nanoparticles. ...

Introduction

Carbon Capture and Sequestration (CCS) is a group of technologies that received recognition in 21 century. CCS process consists of collection and concentration of CO2 emitted from combustion of fossil fuels with further transportation to special storage locations. The reason for storing carbon dioxide away is related Greenhouse effect and its influence on global warming process. The main goal of carbon capture technologies is to stabilize the levels of greenhouse gas in the atmosphere. It is expected that implementation of CCS technologies will make it possible to reduce the total emission of CO2 up to 54% (to 450 ppmv). ( ...

Organizations serving the public should have a well-defined disaster management plan, which ensures potential disasters are identified and countered before they happen. Structuring the emergency services effectively ensures that the consequences of disasters are duly minimized, and people who would be planning to attack a given facility draws back. According to Kim (2014), organizations such as hospitals should ensure that collaboration of all departments should be highly acknowledged since emergency control department cannot singularly handle disasters in the entire hospital without reinforcement from other departments. It is, therefore, important that every stakeholder or employee in the hospital be taken ...

Introduction:

Nanobiotechnology serves as an imperative technique in the development of clean, nontoxic, and eco-friendly procedures for the synthesis and congregation of metal NPs having the intrinsic ability to reduce metals by specific metabolic pathways. Silver nanoparticles are particularly interesting nanoscale systems due to the ease with which they can be synthesised and modified chemically. Synthesis of silver nanoparticles has been widely researched due to their interesting size and shape-dependent properties [26]. These novel properties can be tailored by controlling their size, shape, composition, structure and crystallinity. Due to their size features and advantages over available anti-microbial properties, chemical imaging ...

There has been increasing awareness of the role of waste in the production of greenhouse gas emissions and its impacts on climate change. Diminishing natural resources has led to the recognition that what is discarded as waste has the potential to be reused as resources. Governmental legislation on prohibiting toxic materials and prevention and control of the volume of waste has helped in decreasing adverse environmental effects. There is a growing public awareness about waste prevention and its beneficial effects. The society has to replace the linear model of extract-produce-consume-dispose to closed Loop's approach of resource recovery and waste ...

<Instructor>

Groundwater contamination by toxic metals and organic compounds is a serious environmental and public health problem (Crini 39). Many of the common contaminants in wastewater are known to be toxic or carcinogenic. Common groundwater contaminants include heavy metal ions, aromatic compounds, and dyes. Additionally, heavy metals are not biodegradable and tend to bioaccumulate, leading to various diseases and disorders. Mercury and cadmium are among the most toxic metals and are very damaging to the environment. Additionally, chromium (VI) is a wide-spectrum toxin, as it is toxic to bacteria, plants, animals, and humans. Organic compounds in groundwater are ...

Click Chemistry describes the biocompatible reactions that are high yielding, that are very simple to perform, have wide scope, that need no chromatography to remove their byproducts and that can be conducted in easily removable solvents. The synthesis of first triazole was reported by Arthur Michael in 1893. In the 20th century, Huisgen discovered the catalyst of copper, 1,3-dipolar cycloaddition which required the temperature of 100 degree Celsius. This reaction of copper is a highly versatile reaction which does not require any specific reaction conditions and can easily be performed with various solvents, wide temperature range and pH, ...

Precision Metal Machining Inc. is a veteran owned company that operates in the machining industry, which is part of the manufacturing process of many metals and other composites. The company is ITAR certified, which is important considering the company deals in imports and exports. The company offers CNC machining, Swiss machining, and electrical discharge machining services to its customers. PMMI enjoys a competitive advantage over other machining companies as a result, as most of the industry’s market share is composed of smaller companies. PMMI overall faces numerous internal and external strengths and opportunities while they have minimum weaknesses ...

Strategic Analysis Alacer Gold Corp and Gold and Mining Industry

Introduction Gold is a precious metal with high ductility and malleability, and it finds application as jewelry and investment. It is considered to be one of the safest bet for investment, especially during economic instabilities. Consequently, rapid political instabilities in the Middle East and financial crisis led to rapid increase in the price of gold worldwide. Technological innovation is also a major factor that affects the gold and mining industry. Therefore, the strategic analysis narrows on the gold industry, with a specific focus on Alacer Gold Corporation. It looks at the trends in the industry and how Alacer Gold ...

Introduction: All most all metals are unstable when exposed to air. This is because of the tendency of the metal to be converted into its oxidized form on reaction with air. When compared to zinc, iron has a greater tendency to form oxidized form and thus has greater susceptibility to corrosion. The ability of metals to react with air varies and this determines their relative stability. As zinc is much stable when compared to iron, it is used to galvanizing iron pipe, thus preventing contact of iron with air and water that contains dissolved air. Brass is an alloy ...

Rapid prototyping is the most convenient way to get a replica of a three-dimensional design CAD-generated 3D application way.

These physical models can be only aesthetic and useful for the study of the potential market of the product, or they may meet some or most of the mechanical requirements which would have the final piece, offering, in this case, the possibility to perform functional tests and approval before there even preliminary molds. That man made his hands the means that would shape the objects that determine their evolution, devised object, the object designed: tools, utensils, art, and beauty, among others. Use of science was done to create the elements that should give matter and harmony with their creations. ...

Report for Voltaic Cell Project (Lemon)

The purpose of the experiment is to demonstrate the production of electricity through the use of Zinc, Copper and Lemon. The experiment explores the electrochemical reactions that take place between the two metals in the presence of citric acid provided by the lemon to generate electricity. It highlights the oxidation and reduction reactions that occur within the lemon battery before electrons are released to generate electricity.

Background

The electrochemical reaction that occurs to generate electricity from chemical energy takes place between tow metal pieces, known as the electrodes, and a liquid known as the electrolyte. It is imperative that the ...

Lab report

Abstract The objective of this experiment was to determine the influence of phase transformation on the microstructure and mechanical properties of plain carbon steel type AISI C1045. The testing of metals is necessary to learn what metal is suitable for construction of a specific item by testing how microstructures react during phase transformations. The metal used during the experiments was samples of AISI C1045 Steel also called carbon steel alloy. The samples each underwent tests for Heat Energy (ft-lb) and Hardness (HRC) at five temperatures; 70°F (assumed to be room temperature, 400°F, 700°F, 1000°F and ...

Introduction

Waste is generated as a result of a lot of physical, chemical, and biological processes. Dumping it at some appropriate place is one option. However, ecological effects of throwing away waste products are becoming a serious concern these days. In order to minimize waste, the best strategy is to transform it into valuable products . Plenty of research studies have been carried out to utilize waste effectively. The aim of this report is analysis of the proposed methods for the utilization of common forms of wastes for useful purposes. We also recommend better alternatives to help create a lesser negative ...

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 ...

Marketing

Kyocera Ceramic Knife Introduction In today’s global competition for superiority in product and services, marketing plays an important role in ensuring that the level of competitiveness is achieved by offering the best product quality and value for consumers. Among the new and promising products introduced in the market today is designed to revolutionize the way food is prepared in modern household kitchens, which is the ceramic knife specifically the one made by Kyocera. The discussion involves an analysis and evaluation of kitchen utensil to determine the effective marketing approach for the product. In addition, the discussion will also ...

Impact Testing of Metals

Abstract Impact testing of metal experiment was conducted by performing Charpy V-notch impact tests and the ductile-brittle transition temperature of the three metallic samples was established. Three samples of metals were studied ( 1018 hot-rolled steel, brass and aluminum) to assess the Charpy V-notch impact energy as a function of temperature and the ductile-brittle transition temperature. The DBTT for the sample tested were recorded as follows: -109F, 32F, 71F, 140F and 205F respectively. From the results obtained, it is evident that the fracture energy varies with the original temperature of the specimen under investigation. For Steel, the highest fracture energy ...

At 8:46 on New York time the first plane hit the World Trade Center north tower. After 17 minutes the second plane hit the south tower of the WTC. Fifteen years ago the US lives have changed forever. It is a well-known fact that the United States was not prepared for a terrorist attack of such magnitude. The terrorist attack of 11 September 2001 has changed the United States as well as the world. People started to treat terrorism as a "threat №1". Some experts have called the September 11 attacks, “the beginning of Third World War”.US president's ...

With four treatment options, the patient must undergo a thorough consultation with the clinician, covering each restoration type. Each treatment presentation will include the benefits and drawbacks the that particular method, risks and/or impediments associated with placement, complications that can arise after placement and daily maintenance protocols. The presentations must be clear and concise and devoid of scientific terminology that may not be recognized by the patient. To enhance understanding, it is recommended that the presentations utilize models, photographs and/or drawings representing the final product; images of previous cases can be used if they comply with all patient confidentiality ...

In her documentary, 9/11 Mysteries: Demolitions, Sofia Shafquat argues against the myth that the temperature of the fire and the impact of the planes are what caused the collapse of the buildings. Shafquat mentions that the maximum temperature of an open-air, uncontrolled hydrocarbon fire is 1200° F as it was seen at the 9/11 fires, and that the jet-grade kerosene as it is an example of it should have shown the same kind of temperature. She argues and uses as an example the kerosene heater which runs on the same jet-grade kerosene, in that it does not cause any ...

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GENERAL INFORMATION ON DENTAL IMPLANT TREATMENT

Objective of dental implants After losing teeth, the supporting bone segment is no longer essential and begins to gradually disappear (Misch, 2008). Once this begins, the missing portions can be replaced with removable dentures or fixed bridges; this process enhances visual appeal, corrects speech impediments and improves mastication. However, complications can occur when replacing living tissues with artificial apparatuses. Dentures have been shown to decrease the efficiency of the chewing process, initiate additional bone loss and often experience inadequate retention (Knowles, 1958). Furthermore, dentures may require additional support, which affects the healthy teeth that are ...

Healthcare

In the current paper, we will discuss the complications in removable implant prosthesis, fabrication, delivery, and function. For the purpose of understanding these topics better, we need to understand the basic concepts of dental implants first. A dental implant can be described as an artificial replacement of a tooth root which is placed in the jaw for the purpose of holding a replaced tooth or a bridge. Dental implants can be used as an option for the patients who had lost a tooth as a result of a periodontal disease, injury or any other reason. Two different types of ...

Introduction

Dental implants are increasingly becoming popular because a large section of clinicians believe that natural tooth restoration techniques are inferior to dental implants as implants have a longer life than natural tooth and are less susceptible to biological changes. There are various types of dental implants that support crown, bridges, and dentures, and act as orthodontic anchors and facial prosthesis. The basis of the modern dental implant is a biological process in which titanium forms a bond with bone. Dental fixture is first implanted and then a prosthetic is added. Over the years, various implant impression techniques, such as ...

Abstract

The term "opiate" combines substance extracted from opium, the most important of which is morphine, codeine, papaverine, which is widely used as medicines and paramorphine - used mainly in medical industry to produce medications, as well as synthesized derivatives of morphine, which belong to the semi-synthetic opiates and among which the most famous for their narcotic properties is heroin. Substances, differ in structure from the structure of morphine but operating on a similar mechanism (through opioid receptors), are belonged to the opioids (Kuehn, 2007). A rich lexicon of slang in relation to opiates (especially heroin) reflects not only the " ...

Fuel Cell Technologies in Passenger Cars

Fuel Cell Technology The last decade is characterized by the rapid development of research activity in the field of fuel cells, thus, creating the conditions for their uptake in electric systems. The basic fuel cells’ operating principle has been known for 150 years. However, a variety of technical and financial problems had kept them on the margins of technological applications (Brandon & Hart, 1999). The basic difference between a fuel cell and batteries is that while batteries store energy, fuel cells directly convert a fuel’s chemical energy into electricity by an electrochemical reaction (i.e. Without requiring combustion or movement ...

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What do you think is causing Braddock's problem?

There had been two changes in the production process which may be causes of the creases in the wheel borrows. There was a change in the material from a new supplier. The malleability of the new metal sheets may not be compatible to the stamping machines. The other change is the replacement of the machine operator; the new operator may be making mistakes in his work. The most likely cause is the new metal sheets and one clue is that it appeared first in the construction model whose inventory gets replaced 3 days ahead of the ...

I gasped for fresh air as I was unloaded with the rest of my fellow captives. Months of putrid stench made the fresh air seem almost unbreathable in its goodness. My joints ached and standing seemed a chore. This was no the young body I had left Africa with; then again, I was not the same woman who had left Africa. Months on a slave boat witnessing unspeakable horrors had changed me. I still was unsure what was to come, but it had to be an improvement upon the past couple months of my life. I hadn’t a ...

In this document, a critical review of the film ‘Tetsuo: The Ironman” (1989) directed by Shiny Tsukamoto is done. The main objective of this paper is to determine the formal content, historical and political significance of the film. There is a prior focus on the issues of propaganda in cinema and stakes of political modernist art. Tetsuo is a Japanese film that is pictured on the mainstream of Japanese cinema that become dead at the end of 1980s. Japanese cinema has undergone numerous of phases. However, this document emphasizes on the creative crisis that was faced by Japanese cinema ...

Introduction

In 2006, an apartment complex that included a playground was built on a piece of land that was the site of a metal processing plant that operated between 1930’s and 1950’s before going out of business. Due the above reason, the land had to be assessed for any carcinogenic heavy metals. There are so many potential heavy metals that could have hazardous effects on people’s health, but the assessment mainly focused on cadmium. This is because cadmium was the most common metal used in the plant while it was operational and the metal has both carcinogenic ...

Definition of Coatings

Coating is the process whereby one material is used to continuously cover another surface. According to Dewo et al. (2015), coating is a surface modification approach that involves the addition of a new material onto the surface of a substance or element that is at risk of corrosion.

Formula: Rusting of Iron.

iron + oxygen + water ==> hydrated iron(III) oxide (RUST) 4Fe(s) + 3O2(g) + xH2O(l) ==> 2Fe2O3.xH2O(s)

Different Types of Coatings

The process of coating utilizes multiple films of coatings as primers and top layers. The purpose of each layer is particular; however, the layers often interact with one another (Özçam et ...

It is evident, and all would agree, that the house should be strong, durable, built quickly and at a relatively inexpensive cost. In most cases, disputes begin on the choice of building materials. Which would be stronger, thermal insulated, warmer – wood, brick, concrete, or polymer-based materials? Which of them are considered environmentally friendly and which are not? Until recently, metal, steel in particular was not part of the discussion on the material for the construction of the frame of an individual house. However, the development of energy-efficient technology, the translucent structures based on steel beams are built today even ...

Introduction

Natural resources for decades have always provided many nations with the affluent source of wealth that helps in building their economy. As such, many of the countries that majorly depend on the natural resources such as copper, oil, gold and uranium often embark on intensive mining practices to ensure their natural reserves are productive and can offer sustainability to their economies. Due to their dependency on these resources, the countries often have structures and laws that govern how they handle the resources in every stage to ensure maximization. It is important to highlight that the resources are most often ...

Copper is one of the earliest metals that have been widely used by humans in the ancient time. It is a very good heat conductor and electricity that made it clear to several people in the engineering sector support it for electrical wiring purposes. The outermost electrons in copper wires provide a large path field for the flow of electrical and thermal materials making it a good choice of metal for manufacturers in the electrical industry. Copper is manufactured in chemical industries by use of a catalyst to produce a final product such as ethane and propane used in ...

The Concept of the Collection: Japanese Warrior

Introduction Nature, the environment and the universe as a whole, provided a huge influence on mankind for a long time. It was particularly pronounced prior to the active development of technical progress. Japanese culture can be considered as one of the brightest representatives of such influence. It is a multi-faceted, surprising and unusual world of images and objects. Everything is living his own life in harmony with the surrounding space. Japanese style evolved over the centuries. Now it is an excellent example of the preservation of a constant shape in combination with the cycle of patterns and colors. The ...

Introduction

Group D has been tasked to deliver a concept ideation report explaining the reasoning behind the chosen concept that will be constructed to achieve the goal set out in the Warman Design & Build Challenge 2016. This concept ideation report has been completed in order to reduce the likelihood of error in specifications and function, manage costs, mitigate risks, and evaluate the expected success of the final concept. [1] This report explains the approach and principles utilised by group D to create a comprehensive design. The principles utilized will include: The Development of Product Specifications, Development of Functional Analysis and ...

<Course>

People receive a number of messages every single day from just about anyone and anything. For instance, when people see a No Smoking sign in a public place, it is a message that they will consciously receive. This means that these people know that they are being told not to smoke within the area. However, there are many times when people receive messages unconsciously. These messages are called subliminal messages. The Merriam-Webster dictionary defines the word subliminal to be the things that can influence a person’s mind unnoticeably (“Subliminal”). Subliminal messages are used in several ways ...

Ceramic art and its various forms

The art of pottery might be the oldest one among all other forms of art and it has been proven to exist even 8000 years ago when people used to mix clay and water and used to heat the mixture till it got into the desired shape. The invention of pottery and ceramic art was developed as a tool to create more vessels like glasses and bowls and it ultimately led to the improvement in the standard of living. The evolution in the overall technology and methods used in case of pottery has been directly proportional to the growing ...

Extraction Stage

Extraction of copper produces both specks of dust and gaseous wastes such as sulfur dioxide and carbon dioxide that significantly contribute to environmental pollutions, especially air pollution (“Copper Mining”). Whereas copper wire miners reduce this pollution level by trapping the generated sulfur dioxide gas for purposes of producing sulfuric acid, considerable amounts of sulfur dioxide still escape and take part in both air and water pollution. However, extraction methods that incorporate emulsion of liquid membranes and applications of microorganisms in removing copper from their underground ores have been currently established as the economical and viable ways of gathering copper. ...

Copper metal is one of the best material with good thermal conductivity. Most uses of copper metal are based on the qualities of extracted product (Ntengwe & Witika, 2010). In material extraction, copper wire has various impacts in the process of extraction of several elements and materials. Copper wires are easily installed; installation of copper wire is cheap and faster as compared to the other metal wires (Lu & Dreisinger, 2014). This will lead low cost of extraction of material and also the short time required to complete these processes of extraction of materials. Copper also has resistance to corrosion, hence ...

Japan is a country full of ancient secrets and wonders. Weapons from ancient times have been carried on to this day. When we go back in the days the first thing that we will probably think of is the famous Japanese samurai warriors. There were also others like warrior monks, ninja’s and ruffians. All of these were great warriors of ancient Japan that to this day bring a history of amazing weapons such as swords, spears, the art of archery and many other items and techniques used then and made as well as mastered to this day. Japanese ...

Question one

Impact of European on the Native Americans European invaders came along with deadly ailments against which the Americans Natives had no protection. Contagious diseases like chicken pox, typhus, and smallpox which were less deadly among the Europeans, proved dangerous to the natives. Such diseases were the main reason for a drastic fall in the human population of the Native Americans. Indian people lacked the necessary measures to curb themselves against Europeans viruses which caused the ailments. Such outbreaks among the Americans’ history called the “virgin soil epidemics” led to a drastic population reduction of nearly ninety percent which was ...

Copper wires play a vital role in the process of material extraction. The copper wires aid in the general processes of extracting other materials from their sources as well as the generation of new products and energy. However, the use of copper wires especially in the electric transformers, the efficiency motors, the refrigerating machines as well as the air conditioning has a lot of effects to the environment. There is the production of greenhouse gasses, due to the use of copper wires and fossil fuels (Dresher, 2001). Due to its ductility and malleability, it is used as a dam ...

Abstract

DC motors are employed and used in various applications to perform various tasks which require the conversion of electric current to mechanical motions. In most cases, DC motors are used as actuators to convert the electric current from the output of a control system to a mechanical motion for a present function. This experiment employed the use of simple and easily available materials to construct a simple homemade DC motor. The project used basic components such as coil of wire, permanent magnet and simple dc battery to construct a simple device which demonstrated the operation of a simple DC ...

Introduction

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has gained significant popularity as well as extreme attention over the last couple of years due to its benefits and positive attributes. LA-ICP-MS has been extensively used in the analysis of biological samples, chemical samples and gemology. The technique of laser ablation inductively coupled plasma mass spectrometry is a significant technique for quantitative chemical analysis (Becker, 2013). Due to its numerous advantages such as rapid and direct analysis of samples, high sensitivity and high spatial resolution, it has been applied in numerous applications in different fields apart from chemistry. The use ...

I fought the law, and the law almost lost. I was born in Los Angeles flower garden on the wrong side of town. My earliest memories are scrabbling through refuse for food and clothing. One day I was casing a 7-11 when I saw another kid my age eying the candy rack. A thief knows a thief when he sees one, and this guy clearly didn’t know how to do the job right. I could see the Pakistani man who ran the place staring at him. His brow was furrowed, and I knew he was close to coming ...

I can feel the stage being set, as if something in the air awakens me to it. Among the ear-piercing drumming and shredding, the singer’s vocal cords fleeing from his throat screaming “NIGHTMARE,” the raven-black crowd starts backing away from one another as they create a semi-perfect circle. Everyone is stalking their prey across the circle as they wait for the chorus to start. Suddenly, I feel a sweaty grip pulling my left hand into the crowd away from the circle to the front rows. Startled, I tilt my head to see who is pulling me – it is ...

Abstract

Frida Kahlo is a name that is associated with physical and emotional pain. The famous Mexican painter is well known for her self-portraits. The paper takes two of her artworks, her “Self Portrait with Loose Hair” and “A Few Small Nips” and discusses as to why they are important works to display in an exhibition. Her artworks reflect her pain and despite her limited mobility, the determined artist continued to paint. The essay offers a full explanation of the significance of her works giving historical context for understanding the artist and her work. Her canvases show her affinity for ...

Abstract

I would like to have the report not too professional make it as student one please. the topic about the life cycle of cell phones and there are four different aspects for the cell phones each one is individual report for no more than 250 words the first one, 1.the social sustainability of the Materials extraction for cell phones. I want no more than 250 words about this one life cycle of cell phones 2.the impact of Environment. by Manufacturing cell phones no more than 250 words. life cycle of cell phones 3.the economic principles for the Use of ...

Materials Extraction

These batteries consist of heavy metals such as cadmium, mercury, zinc, and nickel, which are environmental pollutants. Hence recycling them instead of incinerating them together with household waste saves our environment. These valuable metals are recovered during the process of recycling and consequently, save energy by minimizing the use of raw materials. Several materials are extracted from the used batteries and are used to manufacture new ones. Manganese dioxide, which is normally used to catalyze the reaction that produces oxygen from hydrogen peroxide, is contained in the zinc carbon cell. Dry batteries also contain metallic zinc, which is usually ...

Trans-World Flight Center, John F. Kennedy Airport (1956-1962)

Opened in 1962, the Trans World Flight Center of the John F. Kennedy Airport is one of the finest structures belonging to the Organic Modern Period that emerged in the mid-20th century.1 What makes this style truly remarkable was the fact that it is based on neo-futuristic designs as well as embodying strict adherence to geometrical proportions, the creation of functional space for the passengers, aircraft, employees, and maintaining harmonious interaction of the structure in its environment.2 The structure was designed by Eero Saarinen, a notable architect and one of the prolific figures that proposed designing the concept of ...

The term organic semiconductor is used for denoting the class of materials that are based on carbon, which takes part in semiconducting characteristics. And therefore, many of the attractive optoelectronic features exhibited in organic semiconductors emerge from the properties of carbon atoms. Organic semiconductor materials fall into two broad categories, i.e., low-molecular weight organic materials and polymers (Ishii et al. 2009). The individual energy properties are different as can be seen below. The bonding nature manifested in organic semiconductors is fundamentally dissimilar from those seen in their inorganic counterparts. The solid molecular crystals of organic semiconductors are bonded with ...

Material extraction

The mining and extraction of copper has several impacts on the environment. The extraction of copper is done in several steps and process using different technologies and mechanisms. The copper element is extracted from its ore through heating the ore using carbon. This process releases carbon dioxide gas into the atmosphere. It is a well known fact that carbon dioxide gas is a greenhouse gas which result into global warming. The result of the extraction is copper full of impurities. The impure copper is then placed under further treatment to eliminate the presence of the impurities. In most cases, ...