Essays on Energy Requirements

Physical activity entails any action that causes the body to consume energy. Some activities result in high energy use while others result in low to moderate use energy consumption. The intensity of a person’s physical activity determines the type of physical activity factor used to calculate the energy requirements. According to Franz, Boucher and Pereira (2011), the physical activity factor may either be sedentary, low active, active or very active. A very active physical activity factor is calculated by BMR X 1.725 (Rolfes, Pinna & Whitney, 2014). BMR = 88.362 + (13.397 x weight (kg) + (4.799 x height (cm) (5.677 x ...

Abstract

The document considers the use and conservation of energy in domestic dwellings using heating systems, specifically water heated boilers, which is the cheapest solution in the market for home heating systems in Ireland and Europe. The document starts with a literature review of the available home heating systems and focuses on boilers due to its availability and price. The literature review includes a standard boiler array for a typical house, the radiators materials, and key concepts to understand the use of boilers for heat generation in homes. Later, it is necessary the calculation of heat transference for a given ...

According to the Institute of Medicine in the United States of America, the following are the guidelines for weight gain in women of different body mass indeces – Underweight women, i.e. those with a BMI less than 18.5 are required to gain 28-40 pounds, normal weight women, i.e. having a BMI of 18.5 to 24.9 are required to gain 25-35 pounds and overweight women, i.e. those with a BMI above 25 to 29.9 are required to gain 15-25 pounds (“Assessing Your Weight”, n.d.). For pregnant women, the required daily allowance (RDA) of the two macronutrients Calcium and Choline should be ...

Since the industrial revolution – an era known for the peak of coal combustion to supply the energy requirements of mechanically evolving world – humankind has been relying on fossil fuels for the majority of energy. However, although the fossil fuel production is at the point of exhaustion, the world, in general, still is experiencing energy shortages, which is almost always associated with high energy prices (Pimentel 1). Furthermore, environmentalists advocate for cleaner energy source, such as the renewable energy sources, as an alternative to fossil fuel due to the fact that the fossil fuel itself, as well as the production ...

English

The industrialized society we live in today has been completely dependent on natural resources like wood, oil, gas and coal for all its energy requirements, over the past few centuries. Oil powers all vehicular movements, on road, air or sea. It is also the primary choice of fuel in large industries. Nuclear, hydro and coal are primarily used to produce electricity. Natural gas is primarily used for heating as is biomass. According to planetforlife.com, in 2008, 83% of the world’s energy requirements were provided by oil, coal and natural gas together. But these limited resources are diminishing with ...

Introduction

Wen highly trained, motivated and talented athletes meet for competition there is a very small margin of defeat and victory. When everything else is on a level platform, nutrition becomes the determinant between losing and winning. Many athletes ignore key dietary issues and only focus on supplementing their diet with vitamins, minerals and proteins. Any professional athlete knows the value of nutritional support when it comes to performance(Perez-Schindler, Hamilton, Moore, Baar, & Philp, 2015). There is a lot that is involved including energy requirements, body mass, the type of foods, the sport involved and much more. All these factors ...