Essays on Airtight

Slide 2: Bagpipes

Bagpipes fall in the aerophones class of musical instruments, which uses a source of constant air supply and enclosed reeds to produce sound notes, has historically been played in the Middle East, the Persian Gulf, Europe and Caucasia. They trace the origins as far back as 1000 BC, in the Middle East. References to bagpipes have been unearthed, with evidence of Emperor Nero having been depicted playing a tibia in 2nd Century (Cannon, 2008). The arrival of the bagpipes in Europe is marked by their appearance in the continent’s iconography and art in the 13th century, before spreading to the ...

Peace that people enjoy nowadays uninterrupted is, of course, not a new phenomenon. However, what is interesting is that the humanity has lived only several hundred years without warring for whatever reason could bring large armies face-to-face in a lethal confrontation for questionable reasons. Besides soldiers, the brute force of conflicts, the main tools of war have always been weapons indicating the state of technological advancement of nations, being the litmus paper and the benchmarks of progress. Thousands years ago, there was no such concept as a long-lasting peace, and the weaponry was a lot more different than it currently is, being used ...

Sous Vide is a cooking method that came from a French term that means under pressure. In the process, food is sealed in an airtight bag made from plastic material. The food is then cooked in the water longer than the usual cooking time. This can be done in meats and vegetables through precisely regulated temperature, which is much lower than usually used for cooking. The temperature normally ranges from 55 °C to 60 °C. This method is intentionally done so that meats and vegetables are cooked evenly without overcooking the outside portion while keeping the food’s inside portion well-done ...

I. Introduction In the new millennium, professional builders and clients have recognized the major contribution of buildings to carbon dioxide and other greenhouse gas emissions worldwide. The control of building energy use and GHG emissions represents a major solution to the problem of expanding energy usage. Hence, architectural and design firms, engineering firms, specialized consulting firms, and even small architectural organizations have now turned to green methods in making new buildings. According to Yudelson (p. 3), they have subscribed to the LEED evaluating and rating systems. They lead the sustainable way to construction and design. LEED is a green ...

Introduction

A natural phenomenon is any non-artificial event not produced by human activity but may affect humans. Natural phenomenon includes weather, decay, erosion and volcanic eruptions. Most natural phenomena are termed harmless. Erosion is the process which leads to the removal of material from a section of the earth. Erosion may occur when solids such as rocks are weathered and transported to another place by wind, water, and ice (Toy, Foster, & Renard, 2002). Although soil erosion is a natural process human land use such as deforestation, industrial agriculture and urban sprawl have profound effect on erosion. A certain amount of ...