A Wisdom Archive on mold

Hats are made from a variety of materials, including wool and fur felt, twill, canvas, leather and straw. Fabric, leather and straw hats are specially constructed to be a certain shape. Most felt, straw, and some fabric hats differ only by cosmetics, determined by how the hat is blocked, or shaped by a mold or by hand. Blocking the hat shapes the crown by applying steam to the material to soften the fabric and, once finished and dried, fix the shape of the hat. If the hat's material is strong enough, it often can be reblocked to anoth ...

Read more here: » Hat: Encyclopedia II - Hat - Physical attributes

There are four main types of mechanical air filters: paper, foam, synthetics and cotton. Though all have varying degrees of practicality, it is generally recognized that cotton air filters are best because of their durability and technological advantages. Air filter - Paper. Paper filters are generally used in automobiles because they are inexpensive and disposable. Due to the characteristics of paper, good airflow is sacrificed for good filtration. A example of pleated-paper air filters designed for in-duct use with home heating, ventilation, and air conditioning (H ...

Read more here: » Air filter: Encyclopedia II - Air filter - Types of air filters

It is estimated that three million people indirectly die of air pollution each year worldwide. About 90% of these mortalities are largely attributable to indoor air pollution in developing nations. In the U.S. between 50,000 and 100,000 deaths per year are linked to air pollution, more people than die from car accidents. Research published in 2005 suggests that 310,000 Europeans die from air pollution annually. Direct causes of air pollution related deaths include aggravated asthma, bronchitis, emphysema, lung and heart diseases, and other r ...

Read more here: » Air pollution: Encyclopedia II - Air pollution - Deaths

Anthropogenic Sources related to burning different kinds of fuel - human activity Combustion-fired power plants. Vehicles with internal combustion engines Devices powered by Two-stroke engines. Stoves and incinerators, especially ones that are coal or wood-fired Farmers burning their crop waste. Wood fires, which usually burn inefficiently. Other Anthropogenic Sources Aerosol sprays and refrigeration Arsenic and chlorine found in drink ...

Read more here: » Air pollution: Encyclopedia II - Air pollution - Pollution Sources

Contaminants of air can be classified as particulates and gases. Particulates are small particles, classified by their sizes. Atmospheric particles are usually measured as TSP, PM10 or PM2.5. TSP stands for Total Suspended Particulates. The PM10 fraction consists of particles with an aerodynamic diameter of less than 10 micrometres; these are more dangerous to humans than TSP, because they can be breathed deep into the respiratory tract and reach the lungs. PM2.5 particles are even more dangerous because they can pass through the uppe ...

Read more here: » Air pollution: Encyclopedia II - Air pollution - Contaminants

The most common telescope design for the amateur telescope maker is a simple reflector on a Dobsonian Mount. The Dobsonian is very simple and easy to make. A Dobsonian telescope can be optimized for both planetary and deep sky observing. It is not suitable for astrophotography because stars rotate in the field, smearing the edges. First, the amateur decides what size to construct. The difficulty of construction grows roughly as the square of the diameter of the mirror. A 4 inch (100 mm) mirror is a moderately easy science fair project ...

Read more here: » Amateur telescope making: Encyclopedia II - Amateur telescope making - Telescope design

The lack of ventilation indoors concentrates air pollution where people are most exposed to them. Background pollution comes from such mundane sources as shower water mist containing arsenic or manganese, both of which are damaging to inhale. The arsenic can be trapped with a shower nozzle filter. Radon gas, a carcinogen, is exuded from the earth and trapped inside houses. Researchers have found that radon gas is responsible for over 1,800 deaths annually in the United Kingdom. These natural radon emissions can be blocked by a layer of alumi ...

Read more here: » Air pollution: Encyclopedia II - Air pollution - Indoor air pollution

When PET degrades, several things happen, mainly the formation of acetaldehyde and cross-links ("gel" or "fish-eye" formation). Acetaldehyde is normally a colorless gas with a fruity smell. It forms naturally in fruit, but it can cause an off-taste in bottled water. Acetaldehyde forms in PET through the "abuse" of the material. High temperatures (PET decomposes above 300°C or 572°F), high pressures, extruder speeds (excessive shear flow raises temperature) and long barrel residence times all contribute to the production of acetaldehyde. Wh ...

Read more here: » Polyethylene terephthalate: Encyclopedia II - Polyethylene terephthalate - Degradation

Crystallization occurs when polymer chains fold up on themselves in a repeating, symmetrical pattern. Long polymer chains tend to become entangled on themselves, which prevents full crystallization in all but the most carefully controlled circumstances. PET is no exception to this rule; 60% crystallization is the upper limit for commercial products, with the exception of polyester fibers. PET in its natural state is a crystalline resin. We are able to produce clear products by rapidly cooling molten polymer to form an amorphous solid. ...

Read more here: » Polyethylene terephthalate: Encyclopedia II - Polyethylene terephthalate - Crystals

Goats are extremely curious and intelligent. They are easily housebroken, and trained to pull carts and walk on leads. They are also known for escaping their pens. If you have inferior fencing, be assured your goats will test it and soon you will know where the gaps are. Goats are very coordinated and can climb and hold their balance in the most precarious places. Goats are also widely known for their ability to climb trees, although the tree generally h ...

Read more here: » Goat: Encyclopedia II - Goat - Behavior

Discipline:
Training or experience that corrects, molds, strengthens, or perfects (especially) the mental faculties or moral character; noted primarily by its absence in American occult groups.

 
(See also: Discipline, Pagan, Paganism, Pagan Dictionary )

Sadaikarupa (Sanskrit) [from sada always + eka one + rupa form]
 
Always the one and same body; the essence of immutable nature. This Hindu philosophical term means the cosmically perduring (through both pralaya and manvantara following each other alternately) of the karmic substance of universal nature, however much cosmic karma may mold or vary the cosmic fields in and upon which it is eternally active.

 
(See also: Sadaikarupa, Mysticism, Mysticism Dictionary )

Platonic School The philosophers of the Academy, who followed Plato and can be traced down to the days of Cicero, gradually undergoing change during that period and divisible into schools connected with the names of prominent philosophers.
 
Distinguished from the Aristotelian or Peripatetic school, much as philosophy is distinguished from science or as idealism is distinguished from naturalism. The principal feature is the Platonic dualism: of noumenon and phenomenon, of the self-moving and that which is moved, of the Idea and its manifestation in an organic being, of the permanent and the impermanent, of soul and body, nous and psyche, etc.
 
In epistemology this dualism appears as philosophia and sense experience -- the wisdom which apprehends reality and that which forms concepts from the data of sense experience; in morals, as the contrast between the Good, which is altruistic because it apprehends the unity of all beings, and the ethic of self-seeking based on the illusion of separateness.
 
Plato''s message was that of a person initiated in the sacred Mysteries, but under the usual necessity of reticence, of speaking in veiled language, and of casting his knowledge into the prevalent molds of thought.

 
(See also: Platonic School, Mysticism, Mysticism Dictionary, Occultism, Occultism Dictionary )