Results 241 to 250 of about 1,149,747 (305)
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The historical roots of economic development
Science, 2020Deep origins of modern inequality Methodological innovations are enabling scientists to study how events in the distant past affect contemporary life.
Nathan Nunn
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Getting to the Root of a Root Problem
Science Signaling, 2014Nitrogen-starved rootlets send small peptides to the shoot to initiate compensatory uptake in other rootlets.
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Planta, 1972
The caps of the roots of Zea mays (var. Kelvedon 33) are the source of a growth inhibitor system which also acts on the root elongation of Lens culinaris.
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The caps of the roots of Zea mays (var. Kelvedon 33) are the source of a growth inhibitor system which also acts on the root elongation of Lens culinaris.
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2018
This chapter establishes the importance of African American shop workers to Texas railroad hubs such as Marshall, Texas, and explores black responses to the 1922 National Railroad Shopmen’s Strike. Newspaper sources reveal that, while some Texas black and white shopmen cooperated in the 1922 walkout, 216 black shopmen in Marshall dramatically broke ...
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This chapter establishes the importance of African American shop workers to Texas railroad hubs such as Marshall, Texas, and explores black responses to the 1922 National Railroad Shopmen’s Strike. Newspaper sources reveal that, while some Texas black and white shopmen cooperated in the 1922 walkout, 216 black shopmen in Marshall dramatically broke ...
openaire +1 more source
Australian Dental Journal, 1986
Abstract— Over the past years a great deal of work has been done in the field of tooth root resorption but notwithstanding this, understanding of the subject has progressed very little. This paper reviews the subject and suggests ways of minimizing root resorption or perhaps even eliminating it.
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Abstract— Over the past years a great deal of work has been done in the field of tooth root resorption but notwithstanding this, understanding of the subject has progressed very little. This paper reviews the subject and suggests ways of minimizing root resorption or perhaps even eliminating it.
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Journal of the History of Ideas, 1995
S'appuyant sur les travaux de L. Febvre et D. Wotton, l'A. retrace l'historiographie des preuves et des persuasions qui ont contribue au debat sur l'incroyance et l'atheisme, depuis le spinozisme jusqu'au neorepublicanisme, et depuis le christianisme primitif jusqu'a l'heterodoxie ...
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S'appuyant sur les travaux de L. Febvre et D. Wotton, l'A. retrace l'historiographie des preuves et des persuasions qui ont contribue au debat sur l'incroyance et l'atheisme, depuis le spinozisme jusqu'au neorepublicanisme, et depuis le christianisme primitif jusqu'a l'heterodoxie ...
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International Journal of Algebra and Computation, 2001
In this work we study the problem of determining an unambiguous p-root of a language, i.e. a solution of the equation Xp=L when L is a language and the product is unambiguous. We show that every language admits at most one unambiguous root and that the problem of the existence of the unambiguous root is undecidable for the class of context free ...
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In this work we study the problem of determining an unambiguous p-root of a language, i.e. a solution of the equation Xp=L when L is a language and the product is unambiguous. We show that every language admits at most one unambiguous root and that the problem of the existence of the unambiguous root is undecidable for the class of context free ...
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2013
BackgroundThere is a large body of literature on competitive interactions among plants, but many studies have only focused on above-ground interactions and little is known about root-root dynamics between interacting plants. The perspective on possible mechanisms that explain the outcome of root-root interactions has recently been extended to include ...
Faget, Marc +6 more
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BackgroundThere is a large body of literature on competitive interactions among plants, but many studies have only focused on above-ground interactions and little is known about root-root dynamics between interacting plants. The perspective on possible mechanisms that explain the outcome of root-root interactions has recently been extended to include ...
Faget, Marc +6 more
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Root–Root Interactions: Towards A Rhizosphere Framework
Trends in Plant Science, 2016Plant scientists have made great progress in understanding molecular mechanisms controlling root responses to nutrients of arabidopsis (Arabidopsis thaliana) plants under controlled conditions. Simultaneously, ecologists and agronomists have demonstrated that root-root interactions involve more than competition for nutrients.
Mommer, L. +2 more
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Decomposition of Root Tips, Fine Roots, and Coarse Roots
2020Decomposition of fine-root litter is much less studied than that of foliar litter although fine root litter is a major contributor to litter input to the forest soil. This chapter is devoted to decomposition of root tips and fine roots. Root litter decomposition may be studied using litter bags, through following remaining root mass in soil cores, or ...
Björn Berg, Charles McClaugherty
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