Essays on Conduits

Question and Answer

Question and Answer

In our online lesson, we learned that the Middle East came to existence through the efforts of countries such as Russia, France, and Britain. For quite a long time, the Middle East has been the center of contentions that have had a worldwide effect. The Middle East summons immense oil assets and key conduits including the Persian Gulf. Amid the Cold War, both the Soviet Union and the United States needed access to the oil and the conduits. Since the conclusion of the Cold War, Western countries have acted to keep local forces from meddling with ...

Nature in city; seed bank; ecosystem and social-urban development.

The terms “ecology” and environment” have different conceptual meanings which often overlap with the concept of “nature” in the context of academic and scientific research and analysis. For instance, ‘Natures and Ecologies’ studies explore the environmental dimensions of ecosystems which includes both physical parameters and biotic attributes of a particular region. The “environment "includes the physical world, the social world of human relations and the built world of human creation. [Ankers 2005] Within the various uses of the word today, "nature" often refers to geology and wildlife. Nature can refer to the general realm of living plants and animals, ...

Selection from an 8 year-period of pulmonary valve replacement and cross sectional follow up of a commercially available biological valve, assessed with established and a new method

What This Thesis Is About

Pulmonary valve replacement is a procedure necessary in many congenital heart defects and in-valve degeneration cases. Surgical results are excellent, but the longevity of artificial valves is very limited. Our goal was to give a retrospective overview of methods and results from the year 2000 until 2008 at Rikshospital, as well as the prospective five year follow-up of a biological valve made from bovine pericardium. Follow up included clinical examination with ECG, echocardiography, spirometry, treadmill testing, echocardiography ...

Manfred Kahmann

SAIBT 2014 Tutorial Assignment 1 Engineering Materials - Main classes of materials

Metals and Alloys

Inorganic materials made out of one or more metallic components. They generally have a crystalline structure and are great warm and electrical conduits. Numerous metals have high quality and high versatile module. They uphold their great quality at high and low temperatures. They likewise have a sufficient elasticity, which is critical for some building provisions. They could be fortified by alloying and a high temperature medication. They are minimum impervious to erosion.

Pottery and Glasses

Inorganic materials comprising of both metallic and non-metallic components fortified together artificially. They could be crystalline, ...

Abstract

The Segovia aqueduct is one of the most exceptional displays of roman hydraulic engineering to date. Constructed using masonry stones and with no mortar, the aqueduct has survived centuries and had been in use until mid-20th century when it stopped being used. Engineers today are applying some of the knowledge they learn from to develop stable structures. However, to develop such a structure in modern day a lot of work, engineering computations, machinery and skill are required.

Introduction The Roman culture at the time involved owning slaves. The slaves included Greeks who were captured as the Romans invaded Greek lands. ...

Introduction

Hydraulic is a term used in oil exploration to refer to the proliferation of fractures in a layer of rock. Hydraulic fracturing employs the use of a pressurized fluid to propagate the fractures on the layer of rock. This is referred to as induced hydraulic fracturing. Conversely, some hydraulic fractures can occur naturally devoid of interference from man. Good examples of these are veins and dykes that occur on layers of rock beneath the earth’s surface. These dykes and veins provide conduits along which petroleum and gas from source rocks can seep in through to reservoir rocks. Through induced hydraulic ...

Roman Aqueducts: Synthesis of Form and Function

Rome’s aqueducts have long been a subject of debate over what constitutes architecture and what amounts to engineering. Howard Crosby Butler’s article on aqueducts as monuments examines the nature of architecture itself. Butler writes that “architecture is distinctively the ‘art of design’ or of composition, and the term may be applied to structures which, though they may have no claim to beauty of detail, give evidencethat their builders had a care for appearances, andan effect of dignity”1 While aqueduct design may indeed belong in the category of form versus function, there are those who have insisted that Rome’ ...