If, on the other hand, they opted for representation, it had to be representation per se -- representation as image pure and simple, without connotations ( at least, without more than schematic ones ) of the three-dimensional space in which the objects represented originally existed.

If the concentration of element or compound in a sample is too high for the detection range of the technique, it can simply be diluted in a pure solvent.

If the azeotrope is not considered sufficiently pure for use, there exist some techniques to break the azeotrope to give a pure distillate.

* If the result of a pure expression is not used, it can be removed without affecting other expressions.

* If a pure function is called with parameters that cause no side-effects, the result is constant with respect to that parameter list ( sometimes called referential transparency ), i. e. if the pure function is again called with the same parameters, the same result will be returned ( this can enable caching optimizations such as memoization ).

* If there is no data dependency between two pure expressions, then their order can be reversed, or they can be performed in parallel and they cannot interfere with one another ( in other terms, the evaluation of any pure expression is thread-safe ).

If is a quaternion valued spinor, is quaternion hermitian 4x4 matrix coming from Sp ( 8 ) and is a pure imaginary quaternion ( both of which are 4-vector bosons ) then the interaction term is:

If there is a single seller in a certain industry and there are not any close substitutes for the product, then the market structure is that of a " pure monopoly ".

If all masses were doubled in value you cannot tell, because all the pure numbers defined by the ratios of any pair of masses are unchanged.

If the composite system is in this state, it is impossible to attribute to either system or system a definite pure state.

If the overall system is pure, the entropy of one subsystem can be used to measure its degree of entanglement with the other subsystems.

If all functions involved in the expression are pure functions, then the expression is referentially transparent.

If made very pure, tungsten retains its hardness ( which exceeds that of many steels ), and becomes malleable enough that it can be worked easily.

If God is in a single state throughout eternity, and with a pure spiritual act it can create a tree, then surely it would be, as Hume says, an abuse of terms to call God a mind.

If a whisky is labelled " pure malt " or just " malt " it is almost certain to be a blended malt whisky.

If the waveform is a pure sine wave, the relationships between peak-to-peak, peak, mean, and RMS amplitudes are fixed and known, as they are for any continuous periodic wave.

If a pure solute which has zero vapor pressure ( it will not evaporate ) is dissolved in a solvent, the vapor pressure of the final solution will be lower than that of the pure solvent.

If we were all pure do-gooders, perhaps following Sidgwick, that would not constitute the outcome that would maximize happiness.

A new therapeutic class, called If inhibitor, has recently been made available: ivabradine provides pure heart rate reduction leading to major anti-ischemic and antianginal efficacy.

If a rigid body moves so that its reference frame M does not rotate relative to the fixed frame F, the motion is said to be pure translation.

If the player bets the size of the pot on a pure bluff, the bluff will have a positive expectation if the probability of being called is less than 50 %.

If the Af bond is linear then there are three reasonable positions for the hydrogen atoms: ( 1 ) The hydrogen atoms are centered and hence all lie on a sheet midway between the oxygen sheets ; ;

If the combustion takes place using air as the oxygen source, the nitrogen can be added to the equation, as and although it does not react, to show the composition of the flue gas:

If oxygen saturations are low, supplemental oxygen should be provided.

If an explosive molecule contains just enough oxygen to convert all of its carbon to carbon dioxide, all of its hydrogen to water, and all of its metal to metal oxide with no excess, the molecule is said to have a zero oxygen balance.

If buried on hot coals or ashes, the heat can kill pathogens, the dry ash can desiccate, and the earth can block oxygen and further contamination.

If water is evaporated too quickly, the membrane dries, resistance across it increases, and eventually it will crack, creating a gas " short circuit " where hydrogen and oxygen combine directly, generating heat that will damage the fuel cell.

If oxygen delivery to cells is insufficient for the demand ( hypoxia ), hydrogen will be shifted to pyruvic acid converting it to lactic acid.

If superoxide ion associated to Fe < sup > 3 +</ sup > is protonated the hemoglobin iron will remain oxidized and incapable of binding oxygen.

If un-aerated, the solution level is kept low enough that enough roots are above the solution so they get adequate oxygen.

If a hellbender ends up in an area of slowly moving water, not enough water will pass over its skin in a given time period, making it difficult to garner enough oxygen to support necessary respiratory functions.

If there is water, that means there is oxygen.

If oxygen, that means we can breathe.

If the core of the star is not too massive ( less than approximately 1. 4 solar mass, taking into account mass loss that has occurred by this time ), it may then form a white dwarf ( possibly surrounded by a planetary nebula ) as described above for less massive stars, with the difference that the white dwarf is composed chiefly of oxygen, neon, and magnesium.

If a red giant has insufficient mass to generate the core temperatures required to fuse carbon, around 1 billion K, an inert mass of carbon and oxygen will build up at its center.

If the bacteria possess catalase ( i. e., are catalase-positive ), when a small amount of bacterial isolate is added to hydrogen peroxide, bubbles of oxygen are observed.

If Theia had been a separate proto-planet, it probably would have had a different oxygen isotopic signature than Earth, as would the ejected mixed material.

If the sedimentation rate is low ( about 1 cm / kyr ), the organic carbon content is low ( about 1 % ), and oxygen is abundant, aerobic bacteria can use up all the organic matter in the sediments faster than oxygen is depleted, so lower-energy electron acceptors are not used.

If this was the case, Earth's free oxygen may have been nearly or totally depleted during a severe ice age circa 750 to 580 million years ago ( mya ).

If corrosion occurs, it occurs on the outside of the wire, not on the gas-tight contact where oxygen cannot penetrate to form oxides.

If this happens to such a degree that the patient cannot draw enough oxygen from his or her environment to maintain cellular respiration, then the victim may need supplemental oxygen.

If this is done through a pocket mask with an oxygen flow, this increases to 40 % oxygen.