Specific surface area

size, the Yellow River is still a key resource for the Chinese civilization’s development. Nowadays industrial, agricultural and residential areas increasingly contribute to water contamination. However, there are measures that can be taken to reduce the amount of these pollutants. Current interventions addressing pollution control measures depend on the area of location of the river. In this approach, as part of the environment management, chemical and physical tests were done in order to…

Summer of 2014, my life was changing quite a bit. As I come back from my first year at school in U.S. and more than prepared to live away from home, I pack my bags and go to São Paulo. Although it is very close to my hometown, Santos, it was still a great change: new swim club, new city, new friends. São Paulo it is much known to be a complete chaos: anywhere with 12 million habitants has to be at least somehow different. With too many people comes too many problems: air and river pollution,…

….. Of Life, Taker of Souls People say that the eyes are the windows to the soul, if only they that really meant. If someone is lying, looking a person in they eye will allow to to see right through them. If a person is hurt, sad, or even heart broken, all you have to do is make eye contact to know what they are feeling. The same is for people who are are in love, happy, and glad. The eyes show and see all. But this is only a small part of what I can see when I look someone in the eyes.…

resulted in many longer term effects. Because of the Plains states’ successfully wheat business and harvest, thousands and thousands of farmers traveled to the area. However, this influx of farmers led to overgrazing and overplowing of the southern plains. Many of the farmers used a farming technique called dry land farming and destroyed the large areas of grassland. This, coupled with an incredible drought and Great Depression of the 1930s, led to the wheat being replaced by dried prairie grass…

and the new measures to be developed are meant to control causative factors like uncontrolled urban sprawl, loss of natural drainage, the inadequacy of the storm water drainage system, lack of maintenance of existing systems, increase in impervious surfaces and lack of coordination between stakeholders involved in implementing the measures. The measures could be broadly classified into structural and nonstructural measures. These measures include institutional, physical, socio- economic and…

days and an anaerobic half-life of 251–498 days (Gan et al., 2005). This study was triggered by lack of observed bifenthrin data in study area at FOL002 within the lower American River. Investigation…

premises that are believed to be fundamental to achieving sustainable stormwater management. Premise 1: Sustainable urban stormwater management maintains ecological structure and function of receiving water bodies. As stormwater from impervious surfaces is a physical impact to streams and transports pollutants from landscapes, the protection and restoration of natural hydrologic regimes necessary and critical to sustainable management of stormwater runoff in urban landscapes (Roy et al.,…

A mudflow is a flowing mixture of debris and water, usually moving down a channel. Flow is divided into categories, depending on the amounts of water involved. Slump occurs when a mass of regolith slides over or creates a concave surface (one shaped like the inside of a bowl). The result is the formation of a small, crescent shaped cliff, known as a scarp, at the upper end. Soil flow takes place at the bottom end of the slump. One is likely to see slumps in any place where forces…

provides general information as to how a specific problem or action leads to water contamination. For example, the first section relates the lack of sewer services to higher levels of nitrates and the presence of E. Coli in the water supply. Another main component to his argument involves presenting a specific example of that contamination. In the case of lacking sewer services he…

cutting down trees, however large areas of trees are cut down to prepare the land for animal grazing. Trees absorb harmful greenhouse gases, they store large amounts of CO2, consequently when large areas of trees are cut down huge levels of CO2 are released back into the atmosphere. Furthermore, due to huge amounts of trees being cut down in rainforests around the world everyday habitats are destroyed. Consequently, the homes of species that reside in these areas are eradicated, which has led to…