Purchasing and installing a small wind power generator for your home is a task that requires substantial investment. Small wind generators can cost you anywhere from $2000-6000 per kW. As such, even the smallest wind turbine - i.e. a 5kV generator - can cost you around $10,000. As such, it is intrinsic that you consider a few issues before you invest a bulk of money in a small wind power generator to reduce your future utility costs Regional Wind Speed This is one factor that most people miss...
It's convenient to drop your clothes off at the cleaners to be dry cleaned, particularly if you're on a busy schedule. In addition, some fabrics need to be dry cleaned to avoid damaging the fabric. Unfortunately, the dry cleaning industry is one that's fraught with hazards, not only to its workers, but also to customers. Is it unhealthy to wear dry cleaned clothes?Is Dry Cleaning Fabric Hazardous to Health?Dry cleaning fabric is a big business with around 36,000 dry cleaning shops located in...
One important marine problem, entanglement, is mainly associated with various fishing-related wastes. Other implicated products are uncut strapping bands, plastic sheeting, and beverage container ring carrier devices.~ Ingestion is also a concern; plastic pellets (unprocessed resins), plastic bags and sheet, and polystyrene spherules (crumbled polystyrene foam) are the items most commonly consumed by marine life. Source reduction and recycling methods, by reducing the amount of gross or net...
Global surveys on different river systems show that these systems are in the process of degradation. This river system degradation is attributed to various factors such as anthropogenic activities and the presence of contaminants or pollutants coming from a variety of industrial effluents. The recognition of river systems as an important body of water for biological balance brings the courage to assess the organisms living on it specifically the benthic macroinvertebrates and microinvertebrates...
This report contains information on five different types of energy sources. It is a literature study that compares two renewable (solar and wind) sources and two non-renewable (coal and natural gas) sources to nuclear energy. The comparison is based on factors such as usage, cost (both capital costs and running costs), safety and stability, storage of waste and the impact on the environment. The sources are individually compared to nuclear energy. In the comparisons only the factors relevant to...
Ecology is defined as a Science in which it emphasizes on the research of all those complex interrelations referred to Darwin as the conditions of the struggle for existence. (Allee et al. 1949) And today, the word "ecology" is further defined as the study of the relationships of organisms to their environment and to one another. (Brewer, 1988) It is the study of relationships between organisms which survived in the World. Thus, "relationship" is the key word. Ecology,...
The provision of a sustainable environment to the next generations is a matter of global interest which is growing the last years. The reduction of Green House Gases (GHG) emissions, the conscious use and efficient allocation of non-renewable energy resources are worldwide goals. One of the greatest projects takes place in road transport. The transportation sector is responsible for the 13.1% of GHG emissions worldwide, two thirds of which are contributed from road transport [1]. Apart from the...
Our earth is warming up and there is an overwhelming concern of how to protect her. Many scientists agreed that climate change is one of the greatest threats to this planet. There are many reasons for this enormous climate change most of them are human made. The most important of them are Global warming and Deforestation. This report is mainly concentrated on deforestation as the amount of cutting the trees for everyday use is surprisingly at a high rate. The consequences of deforestation are...
Resistance means the 'opposition to the flow of current.' Electric current is defined as the movement of free electrons; meaning resistance is the opposite of free electrons.  Ohm's law shows the relationship between the voltage across a given piece of metal and the current flowing through it. The law states:  For a metal conductor at constant temperature, the current flowing through it is directly proportional to the voltage across it. It is also relevant to know...
In Spanish, a long time ago people usually called Colorado River is Rio Colorado or Red River, because it has a red brown color, but now the silt and sediment which made the river has red brown color have lied in the bottom of Lake Powell and behind the dam. So now, people only can see a blue green color on this river. The Colorado River is one of the important rivers in the Southwest of United States, it run through the states Wyoming, Colorado, Utah, New Mexico, Arizona, Nevada and...