Essays on Polypropylene

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Background research Artificial limbs (arms and legs) or the prostheses are intended to perform the degree of the normal function to the amputees. The mechanical devices enable the amputees to walk or to continue using the hand(s) as normal. According to research, artificial limbs date back in 600 BC when armorers created the first prostheses using cumbersome and inflexible iron. Artificial hands intricate imitations of the real hands. Amputees themselves started making their limps after losing such parts. Research shows some amputees lost arms and legs during civil wars and accidents. Indeed, the twentieth century has seen ...

0. Introduction Moto-cars are made from metals. This very common opinion was almost entirely true during almost all the previous century though opposite solitary examples (displayed at images below) are very well known for car likers: wooden bulks, a rubber car, a fiberglass sport car, a car with plastic bulk facias based on soybeans, a concept of a ceramic car, a glass car, and so on. All those examples are just very rare exceptions. Moreover, the probably refer rather to arts than to industry. However, in the current century, metals lost their monopoly. In the present essay, several material ...

Introduction

The research is typically based on the research questions. Punch (1998) identifies the main reasons for setting a research question. The research questions help to organize and direct a study, and keep the researcher focused; they set the boundaries and framework for the project, and designate the data necessary for the project. The research has to provide the reliable results and conclusions, irrespective of the area. Therefore, scientific and social research have to be based on the real-life data and the appropriate data processing methods. The data should be obtained using the procedure of statistical sampling and tested for ...

A conductive cable is a wire or a group of wires that conducts electricity. Substances which do not allow the passage of current through them are known as insulators. An insulating material should possess a very good dielectric strength and fire proofing qualities. In addition to good mechanical strength, it should have high chemical inertness. Often the most suitable insulation for resisting dielectric stress may not have an outer surface that is suitable for the conditions which the cable must meet. Thus, for improvement in resistance to flame, oil, abrasion, and chemical environment, a suitable jacket is extruded around the insulated conductor. ...

Summary: The Innovative Use of Polypropylene

Braun, a German consumer electronics company has been known for their innovative designs and sleek styling since the 1950’s. One of Braun’s chief designers, Dieter Rams, has become a design icon and his trademark minimalist style has influenced Apple products. Braun was always about the design and quality of their products, a source of corporate pride and identity. In 1983, they were bringing a major new design to market, the KF40 coffee machine. There was a disagreement over the plastic used between the industrial designer, who wanted absolute perfection, and a business director, who was willing to make compromises to start selling coffee ...

Abstract

A polymerase chain reaction also known as PCR refers to a technique that is used in the amplification of a DNA fragment making huge numbers of the original fragment. The process uses an enzyme known as DNA polymerase to multiply the DNA fragment. Other components that are necessary for a PCR reaction are the DNA template that is provided by the sample being multiplied, the primers, and nucleotides. The experiment aimed to examine a number of human DNA polymorphisms, the PV92 Alu polymorphism and the mitochondrial control region using human DNA. This was achieved by isolating the mitochondrial DNA from the mouth cells ...

Analysis of Oil Palm Shell Concrete-A Review

Many researches have been conducted on to use oil palm shell (OPS) as the light weight material in last three decades. It is an agricultural waste normally generated from palm oil industry. This industry is normally situated in Malaysia, Indonesia, Thailand, and some other countries. There are many products being made from OPS. The use of OPS as lightweight aggregate in making concrete mix is the main project of many companies in different countries including Malaysia that was first introduced by Abdullah in 1984. Malaysia playing an important role in manufacturing of different oil palm products as it gives ...

INTRODUCTION

Baghouse filters are fabric filter units consisting of one or more isolated sections containing an array of fabric bags (Vatavuk, 1998). Shapes of these bags range from round, flat, tube-shaped, to pleated cartridges. In theory, gas containing high particulate matter level passes through the fabric bag surface. The particulate matter is retained while the cleaned gas is either recycled to the process or vented off the exhaust. This paper attempts to discuss the different concepts behind baghouse filters in relation to environmental engineering. Specifically, this paper discusses (a) particle pollution, (b) baghouse filter principle, (c) filter media selection, (d) types of ...

Introduction

The above quote alludes to the pliability and the malleability of plastic. Plastic is defined by the online version of the Merriam-Webster Dictionary as a synthetic material which is comprised of a variety of organic polymers which can be moulded into a shape while soft, and then set into a rigid, yet slightly flexible form. Glass fibre reinforced plastic (GFRP) is plastic which has been reinforced or strengthened by the use of glass fibres. This composite material has been used in the construction of large-scale items such as luxury boats, missiles, and tanks, and small-scale items, such as tubs, fans, hoods and scrubbers [ ...

Introduction

Proper selection of the material and manufacturing process to be used for a given application is crucial to the success of the manufacturing process. Material selection should be based on material suitability and the possibility of modifying the material to make it suitable for the application while the selection of the manufacturing process should be based on the material selected, the shape required, dimensions of the item being manufactured and the cost of production. A product design specification (PDS) is a crucial element of design that outlines the design and operating requirements and, therefore, facilitates the selection of suitable materials. This ...