A physiological form of clinical depression, SAD (discovered and named by Dr. Normal Rosenthal, senior researcher at the National Institute of Mental Health) is caused by light deprivation brought on by winter's shortened days.Symptoms, which include sleepiness, lethargy, irritability and loss of appetite, generally appear in the fall and diminish in the spring. SAD suffers are affected not only by the season by by the amount of light in their immediate environment.Treatment involves sitting 18 inches from a specially designed light box to obtain a daily dose of light.
Sodium Bromide can cause headaches, confusion, and symptoms of mental illness.
A salt used in cleaning products. It is be very irritating to the eyes.
Sodium Chloride is table salt. It is used in cleaning products, and is be very irritating to the eyes.
a white, odorless, water-soluble chemical compound with chemical formula NaBO3.
It serves as a source of active oxygen in many detergents, laundry detergents, cleaning products, and laundry bleaches.
It is a less aggressive bleach than sodium hypochlorite and therefore causes less degradation to dyes and textiles.
sodium tri-poly phosphate
A naturally occurring mineral is used for water softening.
Any liquid (such as water or alcohol) which dispenses or dissolve another substance.
Stoddard solvents are petroleum distillates. They are eye and mucous membrane irritants found in floor and auto wax, abrasives, and all-purpose cleaners. They can also cause headaches, confusion, lack of concentration, and symptoms of mental illness.
Plastics made from styrene (also known as cinnamene, cinnamol, phenylethylene, and vinyl benzene) are used in hundreds of products, such as ink, kitchen utensils, food wrap, PVC, tires, auto parts, Styrofoam, synthetic rubber, gasoline, and asphalt. All of these products can emit styrene vapor, and there is some evidence that food stored in styrene containers can become contaminated. Styrene has been found in some rivers where industrial wastes have been dumped. Styrene is irritating to the mucous membranes and eyes, and is a possible carcinogen. High doses can cause death due to to respiratory paralysis. Styrene plastics degrade very slowly in the environment, so they produce a huge volume of waste.
Supercapacitors (also called ultracapacitors) replace traditional batteries. They store electric charge without involving the chemical reaction of a traditional battery (the charge is absorbed on the surface of activated carbon and then released when the light is turned on).
The word 'sustainability' has become a wide-ranging term that can be applied to almost every facet of life on Earth, from a local to a global scale and over various time periods. Long-lived and healthy wetlands and forests are examples of sustainable biological systems. Invisible chemical cycles redistribute water, oxygen, nitrogen and carbon through the world's living and non-living systems, and have sustained life for millions of years. As the earth's human population has increased, natural ecosystems have declined and changes in the balance of natural cycles has had a negative impact on both humans and other living systems.
Usually used in reference to wood (though it can apply to any plant material), sustainable harvesting means that the forest has been well-managed, according to the criteria of established wood certifiers, such as the Forest Stewardship Council.