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Sum

Sum

1. The aggregate of two or more numbers, magnitudes, quantities, or particulars; the amount or whole of any number of individuals or particulars added together; as, the sum of 5 and 7 is 12. Take ye the sum of all the congregation. (Num. I. 2)

sum is now commonly applied to an aggregate of numbers, and number to an aggregate of persons or things.

2. A quantity of money or currency; any amount, indefinitely; as, a sum of money; a small sum, or a large sum. The sum of forty pound. With a great sum obtained i this freedom. (acts xxii. 28)

3. The principal points or thoughts when viewed together; the amount; the substance; compendium; as, this is the sum of all the evidence in the case; this is the sum and substance of his objections.

4. height; completion; utmost degree. Thus have i told thee all my state, and brought My story to the sum of earthly bliss. (milton)

5. (Science: mathematics) A problem to be solved, or an example to be wrought out. A sum in arithmetic wherein a flaw discovered at a particular point is ipso facto fatal to the whole. (Gladstone) A large sheet of paper . . . Covered with long sums. (Dickens) Algebraic sum, as distinguished from arithmetical sum, the aggregate of two or more numbers or quantities taken with regard to their signs, as _ or -, according to the rules of addition in algebra; thus, the algebraic sum of -2, 8, and -1 is 5. In sum, in short; in brief. In sum, the gospel . . . Prescribes every virtue to our con be4 duct, and forbids every sin.

Origin: oe. Summe, somme, OF. Sume, some, f. Somme, L. Summa, fr. Summus highest, a superlative from sub under. See sub-, and cf. Supreme.

1. To bring together into one whole; to collect into one amount; to cast up, as a column of figures; to ascertain the totality of; usually with up. The mind doth value every moment, and then the hour doth rather sum up the moments, than divide the day. (bacon)

2. To bring or collect into a small compass; to comprise in a few words; to condense; usually with up. 'Go to the ant, thou sluggard, in few words sums up the moral of this fable. (L'Estrange) He sums their virtues in himself alone. (Dryden)

3. (Science: veterinary) To have (the feathers) full grown; to furnish with complete, or full-grown, plumage. But feathered soon and fledge They summed their pens [wings] (milton) Summing up, a compendium or abridgment; a recapitulation; a resume; a summary.

Synonym: To cast up, collect, comprise, condense, comprehend, compute.

Origin: cf. F. Sommer, LL. Summare.


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Re: How do i know if a reaction is endothermic or exothermic?

Change in enthalpy = sum of bond energies of reactants - sum of energies of products = Total input energy – Total output energy From: Enthalpy Changes in Chemical Reactions http://faculty.ncc.edu/LinkClick.aspx?fileticket=L2sV5SDzIhE%3D&tabid=1871 ...

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by jonmoulton
Mon Nov 04, 2013 4:07 pm
 
Forum: General Discussion
Topic: How do i know if a reaction is endothermic or exothermic?
Replies: 1
Views: 1079

holographic origin of life

FURTHER CONSIDERATIONS If life as a whole is a sum of random spontaneous chemical reactions then they should have been created gradually from some simple primordial reactions that became more and more crowded. Isolated random reactions leads to ...

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by minasole
Tue Oct 08, 2013 9:30 am
 
Forum: Evolution
Topic: holographic origin of life
Replies: 10
Views: 11041

holographic origin of life

... can be easily observed while working. These characteristics makes them ideal candidates for the following experiment. If a living organism is a sum of chemical reactions, then the components of food intake are the first substrates and the excreted products are the last elements. If identical ...

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by minasole
Wed Aug 28, 2013 5:15 pm
 
Forum: Evolution
Topic: holographic origin of life
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Finding the net charge of amino acid

list the prononizable groups, find their pKa and define their charge at desired pH. Then just sum the charges and you get your result.

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by JackBean
Wed May 29, 2013 1:56 pm
 
Forum: Molecular Biology
Topic: Finding the net charge of amino acid
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Views: 48620

Plants - genetics

... So, if 4 in 1000 are 12 and 36 cm tall, that means that every in 250 plants is tall like that. And on which level of Pascal's triangle you have sum of 250? For two alleles: 1 + 2 + 1 = 4 For threee: 1 + 3 + 3 + 1 = 8 For four: 1 + 4 + 6 + 4 + 1 = 16 etc. until 1 : 8 : 28 : 56 : 70 : 56 : 28 ...

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by JackBean
Sat Feb 16, 2013 10:27 am
 
Forum: Genetics
Topic: Plants - genetics
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