 |
 |
 |
 |
Why
are the Letters Q and Z Missing From the
Telephone Key Pad?
Before the days of area codes, operators were
required to connect all long distance and many
toll calls. When the Bell system started
manufacturing telephones with dials, users
were able to make many of their own local and
toll connections. When direct dialing was
instituted, phone numbers consisted of two
letters (the exchange) and five numbers. A
number we now call 799-1234 might have then
been expressed as PY9-1234. And the telephone
company provided a mnemonic for each exchange
(PY=Pyramid, FR=Franklin, etc.).
So the phone company assigned 3 letters, in
alphabetical order, to each dial number. The
number one was skipped because one was
assigned as an acess code and for internal
phone company use; the zero was avoided
because it automatically summoned the
operator, regardless of the subsequent numbers
dialed. That left eight numbers on the dial
that needed letters, and twenty-six letters
available. Twenty-six is not evenly divisible
by 8. Therefore two of the letters had to be
discarded. "Z" was discarded because
it is the last letter of the alphabet.
"Y", the second last letter, was
under consideration but it was decided that
"Q" would have been too problematic
to keep because it is so difficult to make an
effective mnemonic when virtually all words
starting with "Q" must be followed
by a "U". Moreover, if "Q"
had its rightful place on the number 7, then 8
(where "U" is located) would usually
have to follow, severely limiting the numbers
assignable to the exchange.
|
 |
 |
 |
 |
 |
 |

|
 |
 |
 |
 |
|
|
|
|
|
|
|
|
|
|
|
 |
 |
 |
Slowing
but Still Steady Chemical Industry M&A
Compared to 2004, the number of mergers and
acquisitions in the chemical industry in 2005
is reduced. Activity remains strong and
steady, however, even despite rising
valuations. During the first three quarters of
2005, $19 billion dollars worth of M&A
transactions took place, with investment firms
accounting for 5 of the top 10 deals. More
than 50 deals were valued at over $25 million.
In 2005, $31 billion worth of deals were
completed in the same time period, with 85
deals above the $25 million mark. A higher
percentage of commodity chemicals businesses
were sold in 2005, and the portion of business
located outside of the U.S. also increased in
2005. In fact, Asian, Indian, and Middle
Eastern companies are expressing a growing
interest in acquiring businesses abroad.
|
 |
 |
 |
 |
 |
 |

|
 |
 |
 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
 |
 |
Chemical
Industry Evaluates Energy Sources
Leading petrochemical producers are investing
in alternative fuel programs with the hopes of
gaining a share of this potentially
significant market. Biofuels including Ethanol
and Biodiesel, which are derived from corn or
sugar cane, may be used as fuel for
automobiles. Government subsidies in several
countries are encouraging the development of
this alternative fuel. Research is focused on
developing enzymes that extract Ethanol
directly from crop-waste, which is necessary
in order for biofuels to be economically
viable without subsidies. Novozymes, Cargill,
Dow Chemical, and Bayer are just a few of the
companies involved in various aspects of
biofuels development.
Gas-to-liquids (GTL) technology converts
synthesis gas (Syngas) derived from
hydrocarbons or biomass into gasoline, and is
receiving more attention as cheap feedstock
materials are becoming available. China is one
country investing resources in GTL programs
based on both biomass and coal technologies.
ExxonMobil, Lurgi, Sasol, Engelhard, Süd-Chemie,
and Dow Chemical are some of the companies
involved in GTL research.
Fuel cells, which use Hydrogen directly or
generate Hydrogen from Methanol, have
potential applications in small handheld
electronic devices, personal power plants for
the home, automobiles, and major industrial
facilities. Gas companies like BOC, Air
Liquide, Praxair and Air Products, catalyst
companies like Johnson Matthey, and oil
companies like BP and Shell, are all involved
in fuel cell development. Challenges include
storage and handling of the Hydrogen as well
as the current high cost of the technology.
|
 |
 |
 |
 |
 |
 |

|
 |
 |
 |
|
|
|
|