( ( A ( reverse ( osmosis membrane ) ) ) ( ( ( separates ( the ( various ( low-molecular-weight ( ( molecules and ) ions ) ) ) ) ) ( from ( the ( ( solvent ( by ( ( forcing ( the ( ( ( solvent or ) major ) component ) ) ) ( to ( ( ( pass selectively ) ( through ( the membrane ) ) ) ( by ( ( applying ( pressure greater ) ) ( than ( the ( normal osmotic ) ) ) ) ) ) ) ) ) ) pressure ) ) ) ) . ) )
(ROOT (S (NP (DT A) (JJ reverse) (NNS osmosis) (NN membrane)) (VP (VBZ separates) (NP (DT the) (JJ various) (JJ low-molecular-weight) (NNS molecules) (CC and) (NNS ions)) (PP (IN from) (NP (DT the) (ADJP (JJ solvent) (PP (IN by) (S (VP (VBG forcing) (NP (DT the) (ADJP (JJ solvent) (CC or) (JJ major)) (NN component)) (S (VP (TO to) (VP (VB pass) (ADVP (RB selectively)) (PP (IN through) (NP (DT the) (NN membrane))) (PP (IN by) (S (VP (VBG applying) (NP (NN pressure) (JJR greater)) (PP (IN than) (NP (DT the) (JJ normal) (NN osmotic))))))))))))) (NN pressure)))) (. .)))
A reverse osmosis membrane separates the various low-molecular-weight molecules and ions from the solvent by forcing the solvent or major component to pass selectively through the membrane by applying pressure greater than the normal osmotic pressure.
(ROOT (S (S (VP (VBG Applying) (NP (DT a) (NN pressure) (JJR greater)) (PP (IN than) (NP (NP (DT the) (JJ osmotic) (NN pressure)) (PP (IN of) (NP (DT a) (NN solution))))))) (VP (MD will) (VP (VB cause) (NP (JJ reverse) (NNS osmosis)))) (. .)))