Essays on Polythene

“The land ethic,” which is found in the work of Aldo Leopold, A Sand County Almanac, is a theoretical philosophical framework. In it, Leopold tries to confront the weaknesses which he say encompass common environmental conservation. Leopold, a trained forester, and hunter, cherished and recognized the benefits of nature (Leopold, 2014). Having lived through the Dust Bowl and the Great Depression, he witnessed fertile top soil in southwestern Wisconsin blown away by the wind and eventually sip into the sea. These he observed were as a result of human activities and wondered how, despite the profit motives of man ...

1. Biofuels are fuels in the gaseous or liquid form and can be rapidly regenerated from sources like crops, plants and municipal waste. Existing biofuels are generated from carbohydrates such as sugar and starch (wheat and sugarcane crops). Existing biofuels, such as ethanol, have a lesser energy content (volumetric energy density) relative to conventional hydrocarbon fuels natural gas and petroleum . Furfural and Levulinic acid are molecules that can be obtained from biomass and converted into biofuels. Levulinic acid can be synthesized in greater amounts (>70%) from inedible hexose bio-polymers such as cellulose, which is a polymer of glucose ...

I observed the garbage that was collected for one week in our house dustbin. It included the following: papers, plastic beverage bottles, body perfume cans, fruit peels, left-over foodstuff, and pizza wrapping paper Paper goods accounted the greatest amount of waste that I recorded on that one week. This included the papers that were used as rough work, receipts got from the supermarket and the papers that were used as wrappers to items like bread. Plastic beverage bottles were also common in the dustbin which comprised of canned fruits or beverage bottles. The bottles were several because of ...

Introduction

Marine pollution is a major problem affecting coastal regions of the world. Approximately 6.4 million tons of waste find its way into oceans annually (Polythene Pam, 2014). Marine pollution results from the effects of both environmental factors and human activities. Environmental factors such as rainfall cause run-offs, which carry pollutants from the land and deposit them in oceans. Human activities are the major cause of marine pollution, accounting for over 80% (Gunther). Such activities include the dumping of plastic garbage, oil spills, sewerage discharge and discharge of toxic chemicals from industries. Statistics indicates that plastic garbage is the dominant marine ...

A polymer is commonly defined as a combination of different compounds that in them have some structures that repeat themselves. The entire process that in the end leads to the development of a polymer is known as polymerization. In essence, it is used to refer to how the various parts are combined to form a polymer. Traditionally, more focus was given on the covalent bonds when linking the compounds of a polymer. This has, however, changed in the recent past, and non-covalent bonds have also been given some level of significance. Polymer is a term in reference to exceptionally large classes of the ...

Abstract

This paper clearly presents and defines the numerical study on how hollow building block operates to suppress the convectional currents and reduce the amount of heat flux transferred across the petition of the building wall. The configuration and weight of these blocks have made them to fully be utilized in building the facades. The air filled cavities (hollow cells) together with the small cross-sectional area geometry provides an appropriate elevation for the building block. The hollow polythene bars inserted in this bricks also helps to reduce the heat by about 36% depending on the petition number (Mejad 2006). ...

1. Man support structure 1.1 type of foundation system used The type of foundation used in this supermarket was the screw piles foundation(Howard A. P., 2009). These are just the system of ground anchors that are made using various sizes of tubular hollow in the anchor or pile shafts. It is these shafts which then transfer the loads in the structure into the pile. In order to make it stronger, the shaft is welded properly using a helical steel plate. This pile was twisted into the ground the way a screw is turned inside a timber. They are made ...

Abstract

Environmental debate has become quite a common debate in the modern industrialized world. This is because as people seek more and more comfort, they tend to forsake the environmental concerns for their selfish interests. Through the environmental conservation efforts and the calls for effective utilization of the environment, most companies are put in a dilemma as to what to do about the environmental issues. Such a case is discussed below.

Ethical Dilemma

According to Parks Printing (2008), the current desire for convenient products can put a producing company at an ethical dilemma as whether to satisfy the customers’ demands or to conserve the environment. For ...

Introduction

Life Cycle assessment (LCA) can be described as one of the most vital and essential methods of analyzing and assessing the general environmental effects and impacts of merchandise, services, produce, products, good or processes. It is actually in other words referred to as Life Cycle Analysis (LCA) and it really evaluates and reviews the environmental effects of a product from the time of production, process or procedure from plan and design to the time of disposal. In addition, LCA reviews the whole life cycle of a product or process and it involves the collection and assemblage of data, the evaluation and ...