منابع مشابه
Developmental evolution: This side of paradise
It has long been appreciated that the evolution of snakes involved the loss of limbs and axis elongation, but their developmental basis has been obscure. It has now been shown that alterations in the deployment of Hox genes and an early block in the formation of hindlimb primordia underpin these modifications.
متن کاملIs this object balanced or unbalanced? Judgments are on the safe side.
Do we perceive correctly whether a 2-D object is balanced or unbalanced? What would be the cause of biased equilibrium judgments? In two psychometric studies, we varied independently the characteristics of the objects and the equilibrium states. First, we observed that observers were excessively sensitive to the eccentricity of the object top. Second, we found that the subjective transition fro...
متن کاملThis facile interconversion of dinuclear double helicates and side-by-side species: a reprogrammable ligand with potential sensor applications.
The ligand L1 forms a dinuclear double helicate with Cu+ but upon addition of Ba2+ to the system a side-by-side species is formed both in solution and in the solid state; in the presence of Na+ both the helicate and the side-by-side species are formed in roughly equal amounts in solution.
متن کاملThis article was presented on
Forages are the most important ingredient in a dairy cow’s ration. She is a ruminant and to be a healthy, productive cow she needs a healthy, productive rumen. High quality forages are the key to achieving a healthy rumen and a productive cow. However, because of the importance of forages in maintaining rumen health and cow performance, when deficiencies in the amount or quality of the forage i...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 2015
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.7582