Carboxylic acid groups (− CO < sub > 2 </ sub > H ) can be deprotonated to become negative carboxylates (− CO < sub > 2 </ sub >< sup >−</ sup > ), and α-amino groups ( NH < sub > 2 </ sub >−) can be protonated to become positive α-ammonium groups (< sup >+</ sup > NH < sub > 3 </ sub >−).

Oceanic models have shown that the opening of these two passages limited polar heat convergence and caused a cooling of sea surface temperatures by several degrees ; other models have shown that CO < sub > 2 </ sub > levels also played a significant role in the glaciation of Antarctica < sup >.</ sup >

* Eno-NaHCO < sub > 3 </ sub >, Citric acid, Na < sub > 2 </ sub > CO < sub > 3 </ sub >

: CaCO < sub > 3 </ sub > ( s ) + H < sub > 2 </ sub > SO < sub > 4 </ sub > ( aq ) CaSO < sub > 4 </ sub > ( aq ) + CO < sub > 2 </ sub > ( g ) + H < sub > 2 </ sub > O ( l )

These may include a tire patch kit ( which, in turn, may contain any combination of a hand pump or CO < sub > 2 </ sub > Pump, tire levers, spare tubes, self-adhesive patches, or tube-patching material, an adhesive, a piece of sandpaper or a metal grater ( for roughing the tube surface to be patched ), and sometimes even a block of French chalk.

In addition, biopolymers have the potential to cut carbon emissions and reduce CO < sub > 2 </ sub > quantities in the atmosphere: this is because the CO < sub > 2 </ sub > released when they degrade can be reabsorbed by crops grown to replace them: this makes them close to carbon neutral.

Some biopolymers are biodegradable: they are broken down into CO < sub > 2 </ sub > and water by microorganisms.

: CH < sub > 3 </ sub > CO < sub > 2 </ sub > H + H < sub > 2 </ sub > O CH < sub > 3 </ sub > CO < sub > 2 </ sub >< sup >−</ sup > + H < sub > 3 </ sub > O < sup >+</ sup >

Similarly, relatively little energy is used in producing and combining the raw materials ( although large amounts of CO < sub > 2 </ sub > are produced by the chemical reactions in cement manufacture ).

This Ca < sup > 2 +</ sup > eventually is transported to the ocean where it reacts with dissolved CO < sub > 2 </ sub > to form limestone.

In-press Master's Thesis Project, Regis University, Denver, CO.

JASON studies have included a now-mothballed system for communicating with submarines using extremely long radio waves ( Project Seafarer, Project Sanguine ), an astronomical technique for overcoming the atmosphere's distortion ( adaptive optics ), the many problems of missile defense, technologies for verifying compliance with treaties banning nuclear tests, a 1982 report predicting CO < sub > 2 </ sub >- driven global warming, and a system of computer-linked sensors developed during the Vietnam War which became the precursor to the modern electronic battlefield.

* Project Vote Smart-Senator Shawn Mitchell ( CO ) profile

The International Time Bureau ( BIH ) began a time scale, T < sub > m </ sub > or AM, in July 1955, using both local caesium clocks and comparisons to distant clocks using the phase of VLF radio signals.

All 128 ASCII characters, including non-printable characters ( represented by their abbreviations ). The 95 ASCII graphic characters are numbered from 20 < sub > hexadecimal | hex </ sub > to 7E < sub > hexadecimal | hex </ sub > ( decimal 32 to 126 ).

The " space " character had to come before graphics to make sorting easier, so it became position 20 < sub > hex </ sub >; for the same reason, many special signs commonly used as separators were placed before digits.

To keep options available for lower case letters and other graphics, the special and numeric codes were arranged before the letters, and the letter " A " was placed in position 41 < sub > hex </ sub > to match the draft of the corresponding British standard.

The @ symbol was not used in continental Europe and the committee expected it would be replaced by an accented À in the French variation, so the @ was placed in position 40 < sub > hex </ sub > next to the letter A.

* If it is required to use a single number X as an estimate for the value of numbers, then the arithmetic mean does this best, in the sense of minimizing the sum of squares ( x < sub > i </ sub > − X )< sup > 2 </ sup > of the residuals.

If F ≥ F < sub > Critical </ sub > ( Numerator DF, Denominator DF, α )

With the formula C < sub > n </ sub > H < sub > 2n + 2 </ sub >, Alkanes belong to a homologous series of organic compounds in which the members differ by a constant relative molecular mass of 14.

Algeria has always been a source of inspiration for different painters who tried to immortalize the prodigious diversity of the sites it offers and the profusion of the facets that passes its population, which offers for Orientalists between the 19 < sup > th </ sup > century and the 20 < sup > th </ sup > century, a striking inspiration for a very rich artistic creation like Eugène Delacroix with his famous painting women of Algiers in their apartment or Etienne Dinet or other painters of world fame like Pablo Picasso with his painting women of Algiers, or painters issued from the Algiers school.

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η < sup > 2 </ sup > ( eta-squared ):

He also offers a conversion table ( see Cohen, 1988, p. 283 ) for eta squared ( η < sup > 2 </ sup >) where 0. 0099 constitutes a small effect, 0. 0588 a medium effect and 0. 1379 a large effect.

When there are only two means to compare, the t-test and the ANOVA F-test are equivalent ; the relation between ANOVA and t is given by F = t < sup > 2 </ sup >.

The number of carbon atoms is used to define the size of the alkane ( e. g., C < sub > 2 </ sub >- alkane ).

: H < sub > 2 </ sub > O ( l ) + H < sub > 2 </ sub > O ( l ) H < sub > 3 </ sub > O < sup >+</ sup >( aq ) + OH < sup >−</ sup >( aq )

In pure water the majority of molecules exist as H < sub > 2 </ sub > O, but a small number of molecules are constantly dissociating and re-associating.

Brackets indicate concentration, such that means the concentration of H < sub > 2 </ sub > O.

This force is used in the formal definition of the ampere, which states that it is " the constant current that will produce an attractive force of 2 × 10 < sup >– 7 </ sup > newton per metre of length between two straight, parallel conductors of infinite length and negligible circular cross section placed one metre apart in a vacuum ".

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Because the clocks had been on average well above sea level, this meant that TAI slowed down, by about 10 < sup >− 12 </ sup >.

The simplest possible alkane ( the parent molecule ) is methane, CH < sub > 4 </ sub >.

New Limits on Naturally Occurring Electron Capture of < sup > 123 </ sup > Te.

< center > Capture of Atlantic bluefin tuna in tonnes from 1950 to 2009 </ center >

< center > Capture of Atlantic mackerel in tonnes from 1950 to 2009 </ center >

< center > The Capture of Christ, with Judas and Peter, who cut off the ear of the servant Malchus by Fra Angelico

New Limits on Naturally Occurring Electron Capture of < sup > 123 </ sup > Te.