| slovo | definícia |
22
(gcide) | 22 \22\ adj.
1. one more than twenty-one; denoting a quantity consisting
of twenty-two items or units; -- representing the number
twenty-two as Arabic numerals
Syn: twenty-two, xxii
[WordNet 1.5 +PJC] |
22
(wn) | 22
adj 1: being two more than twenty [syn: twenty-two, 22,
xxii]
n 1: the cardinal number that is the sum of twenty-one and one
[syn: twenty-two, 22, XXII] |
| | podobné slovo | definícia |
.22 caliber
(encz) | .22 caliber, adj: |
.22 calibre
(encz) | .22 calibre, adj: |
catch 22
(encz) | catch 22,začarovaný kruh Zdeněk Brož |
catch-22
(encz) | Catch-22,Hlava 22 protiválečný román od Josepha Hellera Jiří Šmoldas |
thorium-228
(encz) | thorium-228, n: |
hlava 22
(czen) | Hlava 22,Catch-22 protiválečný román od Josepha Hellera Jiří Šmoldas |
louis pasteur (1822-1895)
(czen) | Louis Pasteur (1822-1895),Pasteurn: [jmén.] francouzský chemik a
bakteriolog Petr Prášek |
22nd
(gcide) | 22nd \22nd\ adj.
1. coming next after the twenty-first in a series
Syn: twenty-second
[WordNet 1.5 +PJC] |
C10H22
(gcide) | Decane \Dec"ane\, n. [See Deca-.] (Chem.)
A liquid hydrocarbon, C10H22, of the paraffin series,
including several isomeric modifications.
[1913 Webster] |
C12H22O10
(gcide) | Rutinose \Rutinose.\
A disaccharide present in glycosides.
Note: It is prepared from rutin by hydrolysis with
rhamnodiastase. 6-O-[alpha]-L-rhamnosyl-D-glucose;
C12H22O10.
[PJC] |
C12H22O11
(gcide) | lactose \lac"tose`\ (l[a^]k"t[=o]s`), n.
1. (Physiol. Chem.) The main sugar present in milk, called
also sugar of milk or milk sugar. When isolated pure
it is obtained crystalline; it is separable from the whey
by evaporation and crystallization. It is a disaccharide
with the formula C12H22O11, being chemically
4-([beta]-D-galactosido)-D-glucose. It has a slightly
sweet taste, is dextrorotary, and is much less soluble in
water than either cane sugar or glucose. Formerly called
lactin. When hydrolyzed it yields glucose and galactose.
In cells it may be hydrolyzed by the enzyme
[beta]-galactosidase.
[1913 Webster +PJC]
2. (Chem.) See Galactose.
[1913 Webster]Maltose \Malt"ose`\ (m[add]lt"[=o]s`), n. [From Malt.]
(Biochem.)
A crystalline disaccharide (C12H22O11) formed from starch
by the action of diastase of malt, and the amylolytic ferment
of saliva and pancreatic juice; called also maltobiose and
malt sugar. Chemically it is
4-O-[alpha]-D-glucopyranosyl-D-glucose. It rotates the plane
of polarized light further to the right than does dextrose
and possesses a lower cupric oxide reducing power.
[1913 Webster +PJC]Sugar \Sug"ar\, n. [OE. sugre, F. sucre (cf. It. zucchero, Sp.
az['u]car), fr. Ar. sukkar, assukkar, fr. Skr. [,c]arkar[=a]
sugar, gravel; cf. Per. shakar. Cf. Saccharine, Sucrose.]
1. A sweet white (or brownish yellow) crystalline substance,
of a sandy or granular consistency, obtained by
crystallizing the evaporated juice of certain plants, as
the sugar cane, sorghum, beet root, sugar maple, etc. It
is used for seasoning and preserving many kinds of food
and drink. Ordinary sugar is essentially sucrose. See the
Note below.
[1913 Webster]
Note: The term sugar includes several commercial grades, as
the white or refined, granulated, loaf or lump, and the
raw brown or muscovado. In a more general sense, it
includes several distinct chemical compounds, as the
glucoses, or grape sugars (including glucose proper,
dextrose, and levulose), and the sucroses, or true
sugars (as cane sugar). All sugars are carbohydrates.
See Carbohydrate. The glucoses, or grape sugars, are
ketone alcohols of the formula C6H12O6, and they turn
the plane of polarization to the right or the left.
They are produced from the amyloses and sucroses, as by
the action of heat and acids of ferments, and are
themselves decomposed by fermentation into alcohol and
carbon dioxide. The only sugar (called acrose) as yet
produced artificially belongs to this class. The
sucroses, or cane sugars, are doubled glucose
anhydrides of the formula C12H22O11. They are usually
not fermentable as such (cf. Sucrose), and they act
on polarized light.
[1913 Webster]
2. By extension, anything resembling sugar in taste or
appearance; as, sugar of lead (lead acetate), a poisonous
white crystalline substance having a sweet taste.
[1913 Webster]
3. Compliment or flattery used to disguise or render
acceptable something obnoxious; honeyed or soothing words.
[Colloq.]
[1913 Webster]
Acorn sugar. See Quercite.
Cane sugar, sugar made from the sugar cane; sucrose, or an
isomeric sugar. See Sucrose.
Diabetes sugar, or Diabetic sugar (Med. Chem.), a variety
of sugar (grape sugar or dextrose) excreted in the urine
in diabetes mellitus; -- the presence of such a sugar in
the urine is used to diagnose the illness.
Fruit sugar. See under Fruit, and Fructose.
Grape sugar, a sirupy or white crystalline sugar (dextrose
or glucose) found as a characteristic ingredient of ripe
grapes, and also produced from many other sources. See
Dextrose, and Glucose.
Invert sugar. See under Invert.
Malt sugar, a variety of sugar isomeric with sucrose, found
in malt. See Maltose.
Manna sugar, a substance found in manna, resembling, but
distinct from, the sugars. See Mannite.
Milk sugar, a variety of sugar characteristic of fresh
milk, and isomeric with sucrose. See Lactose.
Muscle sugar, a sweet white crystalline substance isomeric
with, and formerly regarded to, the glucoses. It is found
in the tissue of muscle, the heart, liver, etc. Called
also heart sugar. See Inosite.
Pine sugar. See Pinite.
Starch sugar (Com. Chem.), a variety of dextrose made by
the action of heat and acids on starch from corn,
potatoes, etc.; -- called also potato sugar, {corn
sugar}, and, inaccurately, invert sugar. See Dextrose,
and Glucose.
Sugar barek, one who refines sugar.
Sugar beet (Bot.), a variety of beet (Beta vulgaris) with
very large white roots, extensively grown, esp. in Europe,
for the sugar obtained from them.
Sugar berry (Bot.), the hackberry.
Sugar bird (Zool.), any one of several species of small
South American singing birds of the genera Coereba,
Dacnis, and allied genera belonging to the family
Coerebidae. They are allied to the honey eaters.
Sugar bush. See Sugar orchard.
Sugar camp, a place in or near a sugar orchard, where maple
sugar is made.
Sugar candian, sugar candy. [Obs.]
Sugar candy, sugar clarified and concreted or crystallized;
candy made from sugar.
Sugar cane (Bot.), a tall perennial grass ({Saccharum
officinarium}), with thick short-jointed stems. It has
been cultivated for ages as the principal source of sugar.
Sugar loaf.
(a) A loaf or mass of refined sugar, usually in the form
of a truncated cone.
(b) A hat shaped like a sugar loaf.
[1913 Webster]
Why, do not or know you, grannam, and that sugar
loaf? --J. Webster.
[1913 Webster]
Sugar maple (Bot.), the rock maple (Acer saccharinum).
See Maple.
Sugar mill, a machine for pressing out the juice of the
sugar cane, usually consisting of three or more rollers,
between which the cane is passed.
Sugar mite. (Zool.)
(a) A small mite (Tyroglyphus sacchari), often found in
great numbers in unrefined sugar.
(b) The lepisma.
Sugar of lead. See Sugar, 2, above.
Sugar of milk. See under Milk.
Sugar orchard, a collection of maple trees selected and
preserved for purpose of obtaining sugar from them; --
called also, sometimes, sugar bush. [U.S.] --Bartlett.
Sugar pine (Bot.), an immense coniferous tree ({Pinus
Lambertiana}) of California and Oregon, furnishing a soft
and easily worked timber. The resinous exudation from the
stumps, etc., has a sweetish taste, and has been used as a
substitute for sugar.
Sugar squirrel (Zool.), an Australian flying phalanger
(Belideus sciureus), having a long bushy tail and a
large parachute. It resembles a flying squirrel. See
Illust. under Phlanger.
Sugar tongs, small tongs, as of silver, used at table for
taking lumps of sugar from a sugar bowl.
Sugar tree. (Bot.) See Sugar maple, above.
[1913 Webster]Sucrose \Su"crose`\, n. [F. sucre sugar. See Sugar.] (Chem.)
A common variety of sugar found in the juices of many plants,
as the sugar cane, sorghum, sugar maple, beet root, etc. It
is extracted as a sweet, white crystalline substance which is
valuable as a food product, and, being antiputrescent, is
largely used in the preservation of fruit. Called also
saccharose, cane sugar, etc. At one time the term was
used by extension, for any one of the class of isomeric
substances (as lactose, maltose, etc.) of which sucrose
proper is the type; however this usage is now archaic.
[1913 Webster +PJC]
Note: Sucrose proper is a dextrorotatory carbohydrate,
C12H22O11. It does not reduce Fehling's solution, and
though not directly fermentable, yet on standing with
yeast it is changed by the diastase present to invert
sugar (dextrose and levulose), which then breaks down
to alcohol and carbon dioxide. It is also decomposed to
invert sugar by heating with acids, whence it is also
called a disaccharate. Sucrose possesses at once the
properties of an alcohol and a ketone, and also forms
compounds (called sucrates) analogous to salts. Cf.
Sugar.
[1913 Webster] |
C14H22O
(gcide) | irone \i"rone\, irones \i"rones\, n.
A fragrant liquid substance, a mixture of several isomers of
the formula C14H22O, forming the essence of the violet
fragrance, commonly isolated from orris oil or from the
rhizomes of Iris. The main ingredient in violets is
[alpha]-irone, which occurs as both cis and trans
stereoisomers. Called also 6-methylionone.
[PJC] |
C14H22O2NCl
(gcide) | Stovain \Sto"va*in\, n. Also Stovine \Sto"vine\ . [Stove (a
translation of the name of the discoverer, Fourneau + -in,
-ine.] (Pharm.)
A substance, C14H22O2NCl, the hydrochloride of an amino
compound containing benzol, used, in solution with
strychnine, as a local anaesthetic, esp. by injection into
the sheath of the spinal cord, producing anaesthesia below
the point of introduction. Called also {amylocaine
hydrochloride}. Chemically it is the hydrochloride of the
benzoyl ester of 1-(dimethylaminomethyl)-1-methyl propanol.
[Webster 1913 Suppl.] |
C19H22N2O
(gcide) | Cinchonidine \Cin*chon"i*dine\, n. [From Cinchona.] (Chem.)
One of the quinine group of alkaloids, found especially in
red cinchona bark. It is a white crystalline substance,
C19H22N2O, with a bitter taste and qualities similar to,
but weaker than, quinine; -- sometimes called also
cinchonidia.
[1913 Webster] |
C19H22O6
(gcide) | gibberellic acid \gibberellic acid\ n. (Chem.),
A plant growth hormone of the gibberellin series
(C19H22O6), also called gibberellin A3. It was first
isolated from the fungus Gibberella fujikuroi. It is used
to promote the growth of seedlings. See also gibberellin.
--MI11
[PJC] |
C20H22O10
(gcide) | Erythrin \E*ryth"rin\, Erythrine \E*ryth"rine\, n. [Gr.
'eryqro`s red.]
1. (Chem.) A colorless crystalline substance, C20H22O10,
extracted from certain lichens, as the various species of
Rocella. It is a derivative of orsellinic acid. So
called because of certain red compounds derived from it.
Called also erythric acid.
[1913 Webster]
2. (Min.) See Erythrite, 2.
[1913 Webster] |
C22H23NO7
(gcide) | opianine \o"pi*a*nine\, n. (Chem.)
An alkaloid (C22H23NO7) found in small quantity in opium.
It is identical with narcotine. It is present in amounts up
to 11% in Papaver somniferum, and is used clinically as an
antitussive. --MI11
Syn: noscapine; narcosine; opian.
[1913 Webster +PJC] |
C23H22O6
(gcide) | rotenone \ro"te*none\, n.
A chemical substance (C23H22O6) extracted from the root of
the derris (Derris elliptica, Derris malaccensis, and
other species), used in treatment of scabies and as an
insecticide for external infestation by chiggers in human
medicine, and in veterinary medicine for the treatment of
infestations with fleas, ticks, and lice.
[PJC] |
C2H4NH22
(gcide) | Diamine \Di*am"ine\ (?; 104), n. [Pref. di- + amine.] (Chem.)
A compound containing two amido groups united with one or
more basic or positive radicals, -- as contrasted with a
diamide.
[1913 Webster]
Note: In chemical nomenclature, if any amine or diamine is
named by prefixing the nitrogen group, the name of the
latter takes the form of amido, diamido, etc., thus
ethylene diamine, C2H4.(NH2)2, is also called
diamido-ethylene.
[1913 Webster] |
C2O2NH22
(gcide) | Oxamide \Ox*am"ide\, n, [Oxalic + amide.] (Chem.)
A white crystalline neutral substance (C2O2(NH2)2) obtained
by treating ethyl oxalate with ammonia. It is the acid amide
of oxalic acid. Formerly called also oxalamide.
[1913 Webster] |
C6H3OHNH22
(gcide) | Amidol \Am"i*dol\, n. [Amide + -ol as in alcohol.] (Photog. &
Chem.)
A salt of a diamino phenol, C6H3(OH)(NH2)2, used as a
developer.
[Webster 1913 Suppl.] |
C6H4CH22
(gcide) | Tolylene \Tol"yl*ene\, n. (Chem.)
A hydrocarbon radical, C6H4.(CH2)2, regarded as
characteristic of certain toluene derivatives.
[1913 Webster] |
C6H5C2H22C
(gcide) | Cinnamyl \Cin"na*myl\, n. [Cinnamic + -yl.] (Chem.)
The hypothetical radical, (C6H5.C2H2)2C, of cinnamic
compounds. [Formerly written also cinnamule.]
[1913 Webster] |
C6H5C2H22CO
(gcide) | Cinnamone \Cin"na*mone\, n. [Cinnamic + -one.]
A yellow crystalline substance, (C6H5.C2H2)2CO, the ketone
of cinnamic acid.
[1913 Webster] |
C6H5N2C6H3NH22
(gcide) | Chrysoidine \Chrys*o"["i]*dine\, n. [Gr. chryso`s gold + -oid +
-ine.] (Chem.)
An artificial, yellow, crystalline dye, C6H5N2.C6H3(NH2)2.
Also, one of a group of dyestuffs resembling chryso["i]dine
proper.
[1913 Webster] |
CONH22
(gcide) | Urea \U"re*a\, a. [NL. See Urine.] (Physiol. Chem.)
A very soluble crystalline body which is the chief
constituent of the urine in mammals and some other animals.
It is also present in small quantity in blood, serous fluids,
lymph, the liver, etc.
[1913 Webster]
Note: It is the main product of the regressive metamorphosis
(katabolism) of proteid matter in the body, and is
excreted daily to the amount of about 500 grains by a
man of average weight. Chemically it is carbamide,
CO(NH2)2, and when heated with strong acids or
alkalies is decomposed into carbonic acid and ammonia.
It unites with acids to form salts, as nitrate of urea,
and it can be made synthetically from ammonium cyanate,
with which it is isomeric.
[1913 Webster]
Urea ferment, a soluble ferment formed by certain bacteria,
which, however, yield the ferment from the body of their
cells only after they have been killed by alcohol. It
causes urea to take up water and decompose into carbonic
acid and ammonia. Many different bacteria possess this
property, especially Bacterium ureae and {Micrococcus
ureae}, which are found abundantly in urines undergoing
alkaline fermentation.
[1913 Webster]Cyanate \Cy"a*nate\ (s?"?-n?t), n. [Cf. F. cuanate. See
Cyanic.] (Chem.)
A salt of cyanic acid.
[1913 Webster]
Ammonium cyanate (Chem.), a remarkable white crystalline
substance, NH4.O.CN, which passes, on standing, to the
organic compound, urea, CO.(NH2)2.
[1913 Webster] |
thorium-228
(gcide) | radiothorium \ra`di*o*tho"ri*um\
(r[=a]`d[i^]*[o^]*th[^o]r"[=e]*[u^]m), n. (Chem.)
an earlier name for the thorium isotope thorium-228, given
by its discoverer Otto Hahn. It is a radioactive substance
formed as one of series of products in the chain of
radioactive decay of thorium. Its immediate predecessor in
the chain is Actinium-228, and it decays by alpha emission to
radium-224 with a half-life of 1.91 years. The name
radiothorium was given prior to the full understanding of the
nature of isotopes of elements.
[PJC] |
ZnNH22
(gcide) | Zinc \Zinc\ (z[i^][ng]k), n. [G. zink, probably akin to zinn
tin: cf. F. zinc, from the German. Cf. Tin.] (Chem.)
An abundant element of the magnesium-cadmium group, extracted
principally from the minerals zinc blende, smithsonite,
calamine, and franklinite, as an easily fusible bluish white
metal, which is malleable, especially when heated. It is not
easily oxidized in moist air, and hence is used for sheeting,
coating galvanized iron, etc. It is used in making brass,
britannia, and other alloys, and is also largely consumed in
electric batteries. Symbol Zn. Atomic number 30. Atomic
weight 65.38. [Formerly written also zink.]
[1913 Webster]
Butter of zinc (Old Chem.), zinc chloride, ZnCl2, a
deliquescent white waxy or oily substance.
Oxide of zinc. (Chem.) See Zinc oxide, below.
Zinc amine (Chem.), a white amorphous substance,
Zn(NH2)2, obtained by the action of ammonia on zinc
ethyl; -- called also zinc amide.
Zinc amyle (Chem.), a colorless, transparent liquid,
composed of zinc and amyle, which, when exposed to the
atmosphere, emits fumes, and absorbs oxygen with rapidity.
Zinc blende [cf. G. zinkblende] (Min.), a native zinc
sulphide. See Blende, n.
(a) .
Zinc bloom [cf. G. zinkblumen flowers of zinc, oxide of
zinc] (Min.), hydrous carbonate of zinc, usually occurring
in white earthy incrustations; -- called also
hydrozincite.
Zinc ethyl (Chem.), a colorless, transparent, poisonous
liquid, composed of zinc and ethyl, which takes fire
spontaneously on exposure to the atmosphere.
Zinc green, a green pigment consisting of zinc and cobalt
oxides; -- called also Rinmann's green.
Zinc methyl (Chem.), a colorless mobile liquid Zn(CH3)2,
produced by the action of methyl iodide on a zinc sodium
alloy. It has a disagreeable odor, and is spontaneously
inflammable in the air. It has been of great importance in
the synthesis of organic compounds, and is the type of a
large series of similar compounds, as zinc ethyl, zinc
amyle, etc.
Zinc oxide (Chem.), the oxide of zinc, ZnO, forming a
light fluffy sublimate when zinc is burned; -- called also
flowers of zinc, philosopher's wool, nihil album,
etc. The impure oxide produced by burning the metal,
roasting its ores, or in melting brass, is called also
pompholyx, and tutty.
Zinc spinel (Min.), a mineral, related to spinel,
consisting essentially of the oxides of zinc and
aluminium; gahnite.
Zinc vitriol (Chem.), zinc sulphate. See White vitriol,
under Vitriol.
Zinc white, a white powder consisting of zinc oxide, used
as a pigment.
[1913 Webster] |
.22
(wn) | .22
n 1: a .22 caliber firearm (pistol or rifle) [syn: twenty-two,
.22] |
.22 caliber
(wn) | .22 caliber
adj 1: of or relating to the bore of a gun (or its ammunition)
that measures twenty-two hundredths of an inch in
diameter; "a .22 caliber pistol" [syn: .22 caliber,
.22-caliber, .22 calibre, .22-calibre] |
.22 calibre
(wn) | .22 calibre
adj 1: of or relating to the bore of a gun (or its ammunition)
that measures twenty-two hundredths of an inch in
diameter; "a .22 caliber pistol" [syn: .22 caliber,
.22-caliber, .22 calibre, .22-calibre] |
.22-caliber
(wn) | .22-caliber
adj 1: of or relating to the bore of a gun (or its ammunition)
that measures twenty-two hundredths of an inch in
diameter; "a .22 caliber pistol" [syn: .22 caliber,
.22-caliber, .22 calibre, .22-calibre] |
.22-calibre
(wn) | .22-calibre
adj 1: of or relating to the bore of a gun (or its ammunition)
that measures twenty-two hundredths of an inch in
diameter; "a .22 caliber pistol" [syn: .22 caliber,
.22-caliber, .22 calibre, .22-calibre] |
22-karat gold
(wn) | 22-karat gold
n 1: an alloy that contains 87 per cent gold |
22nd
(wn) | 22nd
adj 1: coming next after the twenty-first in position [syn:
twenty-second, 22nd] |
atomic number 22
(wn) | atomic number 22
n 1: a light strong grey lustrous corrosion-resistant metallic
element used in strong lightweight alloys (as for airplane
parts); the main sources are rutile and ilmenite [syn:
titanium, Ti, atomic number 22] |
february 22
(wn) | February 22
n 1: the day on which George Washington is remembered [syn:
Washington's Birthday, February 22] |
thorium-228
(wn) | thorium-228
n 1: radioactive isotope of thorium with mass number 228 [syn:
thorium-228, radiothorium] |
822
(foldoc) | RFC 822
822
The RFC defining the Internet
standard format for electronic mail message headers. Also
STD 11, evolved from RFC 733.
(rfc:822).
(1997-03-08)
|
eia-422
(foldoc) | EIA-422
RS-422
(Formerly "RS-422") An EIA
serial line standard which specifies 4-wire,
full-duplex, differential line, multi-drop
communications. The mechanical connections for this interface
are specified by EIA-449. The maximum cable length is
1200m. Maximum data rates are 10Mbps at 1.2m or 100Kbps at
1200m. EIA-422 cannot implement a truly multi-point
communications network (such as with EIA-485), although only
one driver can be connected to up to ten receivers. The best
use of EIA-422 is probably in EIA-232 extension cords.
{Comparing EIA-422, 423, 449 to RS-232-C
(http://rad.com/networks/1995/rs232/rs449.htm)}. {Details
on RS-232, 422, 423 and 485
(http://rs485.com/rs485spec.html)}.
(2002-10-05)
|
iso 8822
(foldoc) | presentation layer
ISO 8822
ISO 8823
layer 6
X.216
X.226
The second highest layer (layer 6) in the OSI
seven layer model. Performs functions such as text
compression, code or format conversion to try to smooth out
differences between hosts. Allows incompatible processes in
the application layer to communicate via the {session
layer}.
Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO
8822).
(1996-07-20)
|
rfc 2234
(foldoc) | RFC 2234
The RFC defining Augmented Backus-Naur Form.
(rfc:2234).
(1997-11-23)
|
rfc 2236
(foldoc) | RFC 2236
The RFC describing IGMP version 2.
(rfc:2236).
(1999-11-08)
|
rfc 2246
(foldoc) | RFC 2246
The RFC that defines TLS protocol
Version 1.0. Written by T. Dierks and C. Allen in January
1999.
(rfc:2246).
(2003-10-25)
|
rfc 2279
(foldoc) | RFC 2279
The RFC defining UTF-8.
(rfc:2279).
(1998-07-29)
|
rfc 2281
(foldoc) | RFC 2281
The RFC describing CISCO {Hot
Standby Routing Protocol}.
(rfc:2281).
(2005-01-26)
|
rfc 2298
(foldoc) | RFC 2298
The RFC proposing a standard
One-Time Password system.
(rfc:2298).
(2000-03-05)
|
rfc 822
(foldoc) | RFC 822
822
The RFC defining the Internet
standard format for electronic mail message headers. Also
STD 11, evolved from RFC 733.
(rfc:822).
(1997-03-08)
|
rs-422
(foldoc) | EIA-422
RS-422
(Formerly "RS-422") An EIA
serial line standard which specifies 4-wire,
full-duplex, differential line, multi-drop
communications. The mechanical connections for this interface
are specified by EIA-449. The maximum cable length is
1200m. Maximum data rates are 10Mbps at 1.2m or 100Kbps at
1200m. EIA-422 cannot implement a truly multi-point
communications network (such as with EIA-485), although only
one driver can be connected to up to ten receivers. The best
use of EIA-422 is probably in EIA-232 extension cords.
{Comparing EIA-422, 423, 449 to RS-232-C
(http://rad.com/networks/1995/rs232/rs449.htm)}. {Details
on RS-232, 422, 423 and 485
(http://rs485.com/rs485spec.html)}.
(2002-10-05)
|
v.22
(foldoc) | V.22
An ITU-T modem protocol which
allowed data rates of 1200 bps. V.22bis doubled this.
(2004-07-26)
|
v.22bis
(foldoc) | V.22bis
V.22 twice. An ITU-T modem
protocol which allowed a data rate of 2400 bits per second,
twice that of V.22.
|
vt220
(foldoc) | vt220
A DEC video terminal, the successor to the
VT100 series.
[On-line documentation?]
(1995-03-28)
|
x.224
(foldoc) | transport layer
host-host layer
ISO 8072
ISO 8073
layer 4
X.214
X.224
(Or "host-host layer") The middle layer in the
OSI seven layer model. The transport layer determines how
to use the network layer to provide a virtual error-free,
point to point connection so that host A can send messages to
host B and they will arrive un-corrupted and in the correct
order. It establishes and dissolves connections between
hosts. It is used by the session layer.
An example transport layer protocol is {Transmission Control
Protocol} (TCP).
OSI documents: ITU Rec. X.214 (ISO 8072), ITU Rec. X.224
(ISO 8073).
(1997-12-07)
|
x.225
(foldoc) | session layer
ISO 8326
ISO 8327
layer 5
X.215
X.225
The third highest protocol layer (layer 5) in the
OSI
seven layer model. The session layer uses the {transport
layer} to establish a connection between processes on
different hosts. It handles security and creation of the
session. It is used by the presentation layer.
Documents: ITU Rec. X.225 (ISO 8327), ITU Rec. X.215 (ISO
8326).
[Examples?]
(1997-12-07)
|
x.226
(foldoc) | presentation layer
ISO 8822
ISO 8823
layer 6
X.216
X.226
The second highest layer (layer 6) in the OSI
seven layer model. Performs functions such as text
compression, code or format conversion to try to smooth out
differences between hosts. Allows incompatible processes in
the application layer to communicate via the {session
layer}.
Documents: ITU Rec. X.226 (ISO 8823), ITU Rec. X.216 (ISO
8822).
(1996-07-20)
|
x.227
(foldoc) | Association Control Service Element
ACSE
ISO 8649
ISO 8650
X.217
X.227
(ACSE) The OSI method for establishing a call
between two application programs. ACSE checks the
identities and contexts of the application entities, and could
apply an authentication security check.
Documents: ITU Rec. X.227 (ISO 8650), X.217 (ISO 8649)
(1997-12-07)
|
x.229
(foldoc) | Remote Operations Service Element
ISO 9072
ROSE
X.219
X.229
(ROSE) A sub-layer of protocol layer six
(presentation layer) in the OSI seven layer model which
provides SASE for remote operations.
Documents: ITU Rec. X.229 (ISO 9072-2), ITU Rec. X.219
(ISO 9072-1).
(1997-12-07)
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