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A pilot study of the influence of residential HAC duty cycle on indoor air quality [An article from: Atmospheric Environment]

A pilot study of the influence of residential HAC duty cycle on indoor air quality [An article from: Atmospheric Environment]
This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
A simple methodology was developed to collect measurements of duty cycle, the fraction of time the heating and air conditioning (HAC) system was operating, inside residences. The primary purpose of the measurements was to assess whether the HAC duty cycle was related to reductions in indoor particulate matter (PM) concentrations. A miniature temperature logger placed on an HAC outlet vent monitored changes in temperature as the system cooled or heated the reside

A pilot study of the influence of residential HAC duty cycle on indoor air quality [An article from: Atmospheric Environment]

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Seasonal cycle of indoor-VOCs: comparison of apartments and cities [An article from: Atmospheric Environment]
This digital document is a journal article from Atmospheric Environment, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
On the basis of 2103 measurements of volatile organic compounds (VOCs) in indoor air we study the intensity of a seasonal pattern. The data are representative for the German population and were gathered in different cities (Leipzig, Munchen, Koln), in rooms of different type (children's, living, sleeping rooms, and other rooms), and in households of smokers and non-smokers. In addition to the randomly selected different apartments that were sampled each month, w

Seasonal cycle of indoor-VOCs: comparison of apartments and cities [An article from: Atmospheric Environment]

List Price: $ 8.95

Price: $ 8.95

A pilot study of the influence of residential HAC duty cycle on indoor air quality [An article from: Atmospheric Environment]

List Price: $ 8.95

Price: $ 8.95

Seasonal cycle of indoor-VOCs: comparison of apartments and cities [An article from: Atmospheric Environment]

List Price: $ 8.95

Price: $ 8.95

Tropical Rainforest - features and facts about the tropical rain forest

The Tropical Rainforest is the earth's most complex ecosystem. The tropical rain forests are forests with tall tress, warm climate, and lots of rain It is characterized by abundant of precipitation and year round warmth. According to Wikipedia "A Tropical rainforest is a tropic ecosystem and are usually found around the equator. They are common in Asia, Australia, Africa, South America, Central America, and Southern Mexico and on many of the Pacific Islands"

The tropical rain forest is a hot, humid forest biome near the equator, with much rainfall and a wide variety of organisms. Temperature in the tropical rain forest is always warm and rain falls year round Benefits of tropical Rain forest

Features/characteristics of the Tropical Rain Forest

1. The tropical rain forest lie in the tropics

2. The rain forests receive at least 80 inches of rain every year

3. The tropical rain forest has a canopy formed by ranches and leaves of trees in the forest.

4. There is a very high level of biological diversity in the tropical rain forest.

5. Great symbiotic relationship exists in the tropical rain forest.

Facts about the tropical Rain forest

The largest rainforest in the world is the Amazon rainforest.
Amazon rainforests produce about 40% of the world's oxygen
One in four pharmaceuticals comes from a plant in the tropical rainforests
1400 rainforest plants are believed to offer cures for cancer
40% of tropical rainforests have already been lost in Latin America and Southeast Asia

Important Facts about the Tropical Rain Forest

Despite covering only 2% of our planet's surface, over half of the earth's animal, insect species, and flora live there.

Within a four mile square area of a tropical rainforest, you would find:

Over 750 species of trees
1500 different kinds of flowering plants
125 species of mammals
400 species of birds
100 reptiles
60 amphibians
countless insects
150 species of butterflies **Only 1% of these species has ever been studied**

Source: - library.thinkquest.org/11353/trforest

Important quote on Tropical Rain Forest

-"My personal love of the tropical forest is older than my realization of their scientific importance. It started when I lived for six months in the cathedral-like splendor of the forests of the upper Iriri in central Brazil, a shadowy world of great beauty without direct sunlight. That was then a region unexplored by Western man, teeming with wildlife, where you could push through dense undergrowth to broad rivers that had never been seen by any non-Indian.. More recently, on the Maraca Rainforest Project at the northern edge of the Amazon basin, I witnessed the amazing wealth of another uninhabited and undisturbed forest. We found several hundred species of creatures new to science - and indication of the amazing genetic wealth that remains to be discovered, and a reminder of the need to protect all types of forest. To protect the forests, we must protect the tribal people who have evolved a way of life in sustainable harmony with their habitat. I have studied the tragic history of countless tribes that have fought and suffered and are now extinct. During the two years that I have worked with Brazilian Indians, I have experienced the absolute quiet of sleeping in communal huts, fishing with Mehinaku, trying to keep up with walking Chavante, and the idyllic life in an Asurini village. Their struggle for survival must become our struggle too."- John Hemming - Director and Secretary of the Royal Geographical Society in London

Tead

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What is Tropical Rainforest?

Features of Tropical Rainforest

Types of Rainforests

Tropical Rainforest food web and chain

The tropical rainforest food web is all about who eats who in the rain forest. The tropical food web describes the chain of events every organism goes through to obtain nutrition, or energy, in order to survive in the rain forest. A food web is a network of food chains.

The tropical rainforest food chain lies in the very critical concept of interdependence. Each organism in the food web depends upon all other organisms in the chain for basic survival. For example, if an insect becomes extinct, plants that it consumes will proliferate and equilibrium in the rainforest will be disturbed. In addition, members of the food web that rank above the insect in question will be affected because it will no longer be available for consumption. This disruption leads to further extinction of species and ultimately the entire food web is drastically changed if not completely obliterated.

Key Concepts for the Tropical Rainforest Food Web/chain

Everything about the tropical rainforest is about the flow of energy and the cycling of matter in the ecosystem.

All energy comes from the sun (solar system).
Plants capture some of this energy by the process of photosynthesis to enable them make food.
Plant-eating animals obtain this energy from plants and meat-eating animals, in turn, take energy from them.
Death and decay recycles matter and energy to help begin the process anew.
All living things need a "home"--a place that provides shelter, food, air, and water.
Living things need one another to survive. the connections are different and comprise the "Web of Life." Some relationships involve eating or being eaten, but many other "cooperative" relationships exist--e.g. providing a place to grow, helping pollinate flowers or scatter seeds.
Damaging the strands in the Web can have unforeseen and far-reaching consequences.

There are some things we need to know about the Tropical rainforest food web.

Each level in the tropical rainforest food web or chain is dependent on the adjoining levels.
In the tropical rainforest food chain, autotrophs make their food from sun.
These primary producers in the rain forest are eaten by herbivores. herbivores are known as plant eating organisms that are eaten by carnivores and omnivores.
The secondary consumers in the tropical rainforest may be eaten by tertiary consumers, who are carnivores.
When any organism dies, in the rain forest tiny microbes (detrivores) take over and decay occurs .
The cycle in the food chain or food web continues

Tropical Rainforest Food Web

Understanding The Tropical Rainforest Food Web
The tropical rainforest food web is all about who eats who in the tropics. The web describes the chain of events every organism goes through to obtain nutrition, or energy, in order to survive. A food web is a network of food chains.

There are some things we need to know about the food web. Each level of the chain is dependent on the adjoining levels. Autotrophs make their food from light or some form of chemical energy and are at the bottom of each food chain. These primary producers are eaten by herbivores (plant eating organisms) that are eaten by carnivores and omnivores. The secondary consumers may be eaten by tertiary consumers, who are carnivores. When any organism dies, tiny microbes (detrivores) take over and what we humans know as decay occurs. And the food web starts all over again.

The rainforest is home to more plants and small insects than any other organism. And herbivores far outweigh carnivores and omnivores. We could provide pages of scientific facts about tropical rainforest food webs. Instead, we'll cut to the chase and tell you why all this is important.

Its importance lies in the very critical concept of interdependence. Each organism in the food web depends upon all other organisms in the chain for basic survival. For example, if an insect becomes extinct, plants that it consumes will proliferate and equilibrium in the rainforest will be disturbed. In addition, members of the food web that rank above the insect in question will be affected because it will no longer be available for consumption. This disruption leads to further extinction of species and ultimately the entire food web is drastically changed if not completely obliterated.

We humans need to work to avoid obliteration of any member of the tropical rainforest food web. The endangered species list keeps getting longer, not shorter. We should be concerned.

The Tropical Rainforest Food Web article provided by Mandarich Media group

Article Source: http://www.articlesbase.com/education-articles/understanding-the-tropical-rainforest-food-web-178173.html

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