MLS are generated using linear feedback shift registers. An MLS generating system with four shift registers is shown in Fig. 1. This can be expressed using the recursive relation, a3(n + 1) = a0(n) + a1(n). Because MLS are periodic and shift registers cycle through every possible binary value (with the exception of the zero vector), ...

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Maximum length sequence, Maximum length sequence - Generation of maximum length sequences, Maximum length sequence - Extraction of impulse responses

Read more here: » Maximum length sequence: Encyclopedia II - Maximum length sequence - Generation of maximum length sequences

The following recipe is as shown on the official website (as of September 2005), although other variants may exist due to the freedom given to modify the recipe. Recipe for approx. 85 ltr. (approx. 6% alcohol by volume). Vores Øl - Malt extract. Four types of malted barley are used: 6 kg pilsner malt 4 kg münsner malt 1 kg caramel malt 1 kg lager malt The malt is crushed and put in 55-60°C hot water for 1-2 hours. The mash is filtered and ...

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Vores Øl, Vores Øl - Usefulness of original recipe, Vores Øl - Recipe for Vores Øl, Vores Øl - Malt extract, Vores Øl - Taste and sugar, Vores Øl - Fermentation, Vores Øl - Other Opendrink projects

Read more here: » Vores Øl: Encyclopedia II - Vores Øl - Recipe for Vores Øl

The quality of gem ammolite is communicated via a letter grade system, from best to least best: AA; A+; A; and A-. However, this system is not yet standardized and some vendors may use their own systems. The grade and therefore the value of an ammolite gemstone is determined by the following criteria: The number of primary colors  A large array of color is displayed in ammolite, including all the spectral colors found in nature. Red and green are far more common than blue or purple due to the latter's ...

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Ammolite, Ammolite - Properties, Ammolite - Formation occurrence and extraction, Ammolite - Gemstone quality, Ammolite - Treatments, Ammolite - Imitations, Ammolite - Use in jewelry, Ammolite - Notes

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Although fully mineralized and containing no water—and therefore not subject to dehydration and subsequent crazing as seen in opal—ammolite is often damaged due to environmental exposure. The thin, delicate sheets in which ammolite occurs are also problematic; for these reasons, most material is impregnated with a clear epoxy or other synthetic resin to stabilize the flake-prone ammolite prior to cutting. Although the tessellated cracking cannot be repaired, the epoxy prevents further flaking and helps protect the relatively soft surface ...

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Ammolite, Ammolite - Properties, Ammolite - Formation occurrence and extraction, Ammolite - Gemstone quality, Ammolite - Treatments, Ammolite - Imitations, Ammolite - Use in jewelry, Ammolite - Notes

Read more here: » Ammolite: Encyclopedia II - Ammolite - Treatments

Ammolite is neither easily nor often imitated; however, a few materials have a passing resemblance that may deceive the unfamiliar. These include: labradorite (also known as spectrolite), an iridescent feldspar also of Canadian origin; and broad-flash black opal. Neither are convincing substitutes, and the latter is actually of greater value than ammolite. Indeed, ammolite is often used as an imitation of black opal. An even less convincing possibility is Slocum stone, a common glass-based imitation of opal. Blues and purples are much more p ...

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Ammolite, Ammolite - Properties, Ammolite - Formation occurrence and extraction, Ammolite - Gemstone quality, Ammolite - Treatments, Ammolite - Imitations, Ammolite - Use in jewelry, Ammolite - Notes

Read more here: » Ammolite: Encyclopedia II - Ammolite - Imitations

Compared to most other gems, ammolite has a rather scant history of use; it did not begin to garner interest in Western society until the 1970s after entering the market (to a limited degree) in 1969. The Blackfeet tribe know ammolite as iniskim, meaning "buffalo stone", and have long believed it to possess amuletic powers; specifically, the gem is believed to aid in the buffalo hunt, and to draw the buffalo within tracking distance. The Blackfeet also believe ammolite to possess healing powers and incoporate the gem into th ...

See also:

Ammolite, Ammolite - Properties, Ammolite - Formation occurrence and extraction, Ammolite - Gemstone quality, Ammolite - Treatments, Ammolite - Imitations, Ammolite - Use in jewelry, Ammolite - Notes

Read more here: » Ammolite: Encyclopedia II - Ammolite - Use in jewelry

Iron is the most abundant metal on Earth, and is believed to be the tenth most abundant element in the universe. Iron is also the most abundant (by mass, 34.6%) element making up the Earth; the concentration of iron in the various layers of the Earth ranges from high at the inner core to about 5% in the outer crust; it is possible the Earth's inner core consists of a single iron crystal although it is more likely to be a mixture of iron and nickel; the large amount of iron in the Earth ...

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Iron, Iron - Notable characteristics, Iron - Applications, Iron - History, Iron - Occurrence, Iron - Extraction from ore, Iron - Compounds, Iron - Biological role, Iron - Isotopes, Iron - Precautions

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The first signs of use of iron come from the Sumerians and the Egyptians, where around 4000 BC, a few items, such as the tips of spears, daggers and ornaments, were being fashioned from iron recovered from meteorites. Because meteorites fall from the sky some linguists have conjectured that the English word iron (OE īsern), which has cognates in many northern and western European languages, derives from the Etruscan a ...

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Iron, Iron - Notable characteristics, Iron - Applications, Iron - History, Iron - Occurrence, Iron - Extraction from ore, Iron - Compounds, Iron - Biological role, Iron - Isotopes, Iron - Precautions

Read more here: » Iron: Encyclopedia II - Iron - History

Iron is one of the more common elements on Earth, making up about 5% of the Earth's crust. Most of this iron is found in various iron oxides, such as the minerals hematite, magnetite, and taconite. The earth's core is believed to consist largely of a metallic iron-nickel alloy. About 5% of the meteorites similarly consist of iron-nickel alloy. Although rare, these are the major form of natural metallic iron on the earth's surface. Iron is also one of the least reactive metals, and therefore, it ...

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Iron, Iron - Notable characteristics, Iron - Applications, Iron - History, Iron - Occurrence, Iron - Extraction from ore, Iron - Compounds, Iron - Biological role, Iron - Isotopes, Iron - Precautions

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Common oxidation states of iron include: the Iron(-II) state, Fe2- (e.g. Fe(CO)42-,Fe(CO)2(NO)2. the Iron(0) state, Fe(CO)5, Fe(PF3)5. the Iron(I) state, [Fe(H2O)5NO]2+. the Iron(II) state, Fe2+, previously ferrous is very common. the Iron(III) state, Fe3+, previously ferric, is also very common, for exam ...

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Iron, Iron - Notable characteristics, Iron - Applications, Iron - History, Iron - Occurrence, Iron - Extraction from ore, Iron - Compounds, Iron - Biological role, Iron - Isotopes, Iron - Precautions

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Naturally occurring iron consists of four isotopes: 5.845% of radioactive 54Fe (half-life: >3.1E22 years), 91.754% of stable 56Fe, 2.119% of stable 57Fe and 0.282% of stable 58Fe. 60Fe is an extinct radionuclide of long half-life (1.5 million years). Much of the past work on measuring the isotopic composition of Fe has centered on determining 60Fe variations due to processes accompanying nucleosynthesis (i.e., mete ...

See also:

Iron, Iron - Notable characteristics, Iron - Applications, Iron - History, Iron - Occurrence, Iron - Extraction from ore, Iron - Compounds, Iron - Biological role, Iron - Isotopes, Iron - Precautions

Read more here: » Iron: Encyclopedia II - Iron - Isotopes

Vitriol was the most important alchemical substance, intended to be used as a philosopher's stone. Highly purified vitriol was used as a medium to react substances in. This was largely because the acid does not react with gold, often the final aim of alchemical processes. The word Vitriol is formed from the initial letters of the alchemical motto VISITA� INTERIORA� TERRA� RECTIFICANDO� INVENIES� OCCULTUM� LAPIDEM (Visit the interior of the earth and rectifying (i.e. purifying) you will find the hidden/secret stone -- the reference is evidently to the legendary Philosopher's Stone). Vitriol - Manu ...

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Vitriol, Vitriol - Extraction, Vitriol - Uses, Vitriol - Manufacture of sulfuric acid, Vitriol - Agriculture, Vitriol - Iron-gall ink

Read more here: » Vitriol: Encyclopedia II - Vitriol - Uses

shamanic extraction healing (extraction method of healing): Method that involves sensing and removing localized spiritual illness and pain.

(See also: Shamanic extraction healing, Body Mind and Soul, Alternative Health, Alternative Health Dictionary)

grape seed extract: used as a dietary supplement for antioxidant and other cardiovascular benefits and for anti-inflammatory actions.

(See also: grape seed extract, Herbal Therapy, Alternative Medicine, Body Mind and Soul)

ginkgo biloba leaf extract: improves memory loss, brain function, depression, cerebral and peripheral circulation, oxygenation, and blood flow. Good for tinnitus, asthma, Alzheimer's disease, heart and kidney disorders, and glucose utilization.

(See also: ginkgo biloba leaf extract, Herbal Therapy, Alternative Medicine, Body Mind and Soul)