Fill a large saucepan with water and bring to boil.
Add lemon juice to a large bowl of water. Remove leaves from artichokes until you reach the tender, pale leaves in the center. Trim stem and ½ inch from top of artichokes; halve lengthwise and place in bowl of lemon juice and water.
Remove artichokes from bowl and blanch in boiling water for 3-4 minutes, or until easily pierced with knife. Drain.
Heat olive oil in a large skillet over medium-high heat. Add garlic and cook about 30 seconds, until fragrant but not browned, stirring constantly. Add artichokes and cook 3 minutes, stirring occasionally. Add wine and thyme; increase heat to high and simmer for about 6 minutes, until liquid has reduced by half. Remove thyme and add pasta to skillet; toss to coat. Remove from heat and add salt to taste. Sprinkle with parmesan cheese before serving.
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