Poison gases can cause injury more easily than solid or liquid poisons because they diffuse (move) in the air, exposing skin, and are easily breathed in. Immediate contact with corrosive gas leads to chemical burns of the skin and lungs. When absorbed into the inside of the human body and into the blood, either by breathing in or through skin, several poison gases cause a poisoning. In a poisoning, medical help is often necessary; simply removing the victim from the gas is not enough to prevent symptoms.
Poison gases are used in industry as chemical reagents. The chemical reactions they can be used for are more important than their toxicity. Today, chemists try to avoid the use of poisonous gases, but it is often not possible. Examples of large-volume industrial poisonous gases are hydrogen sulfide, cracked from oil, chlorine, in diverse chemical uses and to disinfect drinking water, and ammonia, which is a valuable fertilizer into itself and can be converted into a range of other fertilizers, in addition to chemical uses.
Some fumigants (chemicals used to kill pests) are also poison gases, for example phosphine, which is used to kill pests living in grains. The advantage of a gas is that it evaporates after use, so that if food is treated with gas, there is no need to rinse it to remove the poison. Some gasses can kill you and some can’t. Gasses have advantages and disadvantages.
Tim Allen
Tim Allen (born Timothy Allen Dick; on June 13, 1953) is an American actor and comedian.
Allen was born in Denver, Colorado. When he was 13, he moved to Birmingham, Michigan. In October 1978, he was arrested while in possession of 1.4 pounds of cocaine. He was convicted and sentenced to 3-to-7 years in prison and released after 28 months.
Most of Allen's work is in comedy. He is well known for being in "Home Improvement". He also had a role in "The Santa Clause", "Toy Story", and "Galaxy Quest".
WTTE
WTTE is a television station in Columbus, Ohio. It is part of the FOX television network. They first broadcast in 1984 as a general entertainment station. In 1986, joined the FOX network. They have news called "Good Day Columbus" and FOX 28 News at 10 which is the most watched late news in Columbus, Ohio .
AND gate
The AND gate is a logic gate that outputs 1 (true) only when both of its inputs are 1 (true). Since 0 is false, AND outputs the product (result of multiplication) of its inputs. That means that if either or both of its inputs are 0, the output will be 0 (zero multiplied by any real number is zero).
There are three symbols for the AND gate:
Gárdony
Gárdony, "the capital of Lake Velencei", is a holiday resort on the south side of the lake. It is 45 kilometers from Budapest and 20 kilometers from Székesfehérvár. It has active recreation, entertainment facilities, different kinds of accommodation and restaurants for the whole year.
Frédéric Bazille
Jean Frédéric Bazille (6 December 1841 – 28 November 1870) was a French painter. He was born in Montpellier. He was killed in action in the Franco-Prussian War. It was at the Battle of Beaune-la-Rolande in France while leading his unit into a assault on the German position. He died at the age of 28.
F major
F major (or the key of F) is a musical major scale starting on F. Its key signature has one flat.
Its relative minor is D minor and its parallel minor is F minor.
F major is the home key of the English horn, the basset horn, the horn in F, the trumpet in F and the bass Wagner tuba. This means that if you want these instruments to sound in F major, you have to write in C major. Most of these sound a perfect fifth lower than written, except the trumpet in F which sounds a perfect fourth higher. (The basset horn also often sounds an octave and a fifth lower.)
Of the six Overtures Francesco Maria Veracini wrote for Prince Friedrich Augustus in Dresden, most are in either F major or B-flat major because the prince's orchestra had a lot of wind instruments that played best in these keys.
E minor
E minor (Em, Mim) is a minor scale based on the note E. Its key signature has one sharp, F Its relative major is G major.
A lot of classical guitar music is in E minor, because this key is very suited for the instrument. When it is tuned normally, four of the instrument's six strings are part of the tonic chord. The key is also very popular in heavy metal music, because the lowest note on a guitar, E, can be used a lot.
E minor was one of the most-often used keys by Felix Mendelssohn.
See also: List of symphonies in E minor
B-flat major
B major or B-flat major is a major scale starting on B-flat. Its key signature has two flats.
Its relative minor is G minor, and its parallel minor is B minor.
B-flat major is a good key for most wind instruments, especially those for which it is their home key, such as clarinets, trumpets, saxophones, and the flutes in B-flat. Because of this, many works for concert bands (those you might have played in while you were at school) are written in this or a closely related key such as F major or E-flat major.
Haydn's Symphony No. 98, which had both trumpet and timpani, is known as the first symphony that anyone had written in that key. Actually, his brother Michael Haydn had written one earlier. However, Joseph Haydn still gets credit for writing the timpani part at actual pitch with an F major key signature (instead of transposing with a C major key signature), something that made things easier and made more sense.
Five of Mozart's piano concerti are in B-flat major.
G minor
G minor is a minor scale based on G.
Its relative major is B-flat major.
G minor is one of two flat key signatures that needs a sharp for the seventh note (the other is D minor).
During the Baroque period, music in G minor was usually written with a one-flat key signature.
Wolfgang Amadeus Mozart thought that G minor was the most suitable key for showing sadness and tragedy, and many of his minor key works are in G minor, such as the Piano Quartet No. 1 and the String Quintet in G minor. G minor is the only minor key he used as a main key for his numbered symphonies (No. 25, and the famous No. 40). In the Classical period, symphonies in G minor almost always used four horns, two in G and two in B-flat alto. G minor symphonies like Mozart's No. 25 often used E flat major for the slow movement, including Haydn's No. 39 and Vanhal's G minor symphony from before 1771 (Bryan Gm1).
See also: List of symphonies in G minor.
There are many variations of G minor.
D major
D major is a major scale based on D. Its key signature has two sharps. Its relative minor is B minor.
D major is good for violin music because of the structure of the instrument, which has its four strings tuned to G D A E. The open strings resonate with the D string, producing a special rich sound.
Because of this, many classical composers chose to write violin concertos in D major. Examples include Mozart's (No. 2, 1775, No. 4, 1775); Ludwig van Beethoven's (1806); Paganini's (No. 1, 1817); Brahms's (1878); Tchaikovsky's (1878); Prokofiev's (No. 1, 1917); Stravinsky's (1931); and Korngold's (1945).
It is also suitable for guitar music, with drop tuning for the lowest string making two Ds as open strings.
For some beginning wind instrument students, however, D major is not a very good key, because it transposes to E major for B flat instruments. E major has four sharps, which is harder for new learners to play.
Still, the clarinet in B-flat is often used for music in D major. It is probably the key with the most sharps that it can play well. However, when some composers write a piece in D minor with B-flat clarinets, they change to clarinets in A if the music changes to D major.
Most tin whistles are in D, because they are often used in music with fiddles.