Results 21 to 30 of about 749,000 (265)
Ciência e Agrotecnologia, 2011 This paper investigated changes in growth and carbohydrate content of shoots and root systems in response to source-sink manipulation in field-grown coffee trees. The source-sink manipulations were carried out using manual de-fruiting. Two plots of trees
José Donizeti Alves +5 more
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Journal of Forest Science, 2003 120 root systems and trunks of 20 years old birch trees and 60 root systems and trunks of 15 years old birch trees affected by defoliation and with no visual symptoms of damage were analyzed in the air-polluted area of Krušné hory Mts. In the given area,
O. Mauer, E. Palátová
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The Sex Difference in the Pathophysiology of Preterm Birth
CellsPreterm birth (PTB) refers to a labor before 37 gestational weeks. This is a major global contributor to neonatal morbidity and mortality. Although fetal sex is frequently treated as a confounding variable in PTB research, relatively few studies have ...
Gain Lee +3 more
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An integrality theorem of root systems
European Journal of Combinatorics, 2003 Let \(\Phi\) be an irreducible root system, and \(\Delta\) be a base for \(\Phi\). It is well known that any root in \(\Phi\) is an integral combination of the roots in \(\Delta\). The authors pose a natural question: If \(S\) is a linearly dependent subset of \(\Phi\), can there be a linearly independent subset of \(S\) which generates \(S\)?
Amitava Bhattacharya +1 more
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Revista Brasileira de Ciência do Solo, 2009 Este trabalho teve como objetivo avaliar, no campo, a resposta de duas cultivares de milho em um Latossolo Vermelho, em seis níveis de compactação, quanto ao desenvolvimento do sistema radicular, bem como caracterizar a compactação do solo a partir do ...
Onã da Silva Freddi +3 more
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Embeddings of root systems II: Permutation root systems
Journal of Algebra, 2009 In part I [\textit{M. J. Dyer}, J. Algebra 321, No. 11, 3226-3248 (2009; Zbl 1181.20036)] the author studied the embeddings of linear root systems over commutative rings. The present paper studies a class of embeddings of permutation root systems, with properties abstracting those of examples in part I.
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Digital, Three-Dimensional Visualization of Root Systems in Peat
Soil Systems, 2020 Belowground plant structures are inherently difficult to observe in the field. Sedge peat that mainly consists of partly decayed roots and rhizomes offers a particularly challenging soil matrix to study (live) plant roots.
Stella Gribbe +2 more
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen +23 more
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AgronomyDrought is the most important factor limiting winter wheat yield in the North China Plain (NCP). Choosing high-yielding cultivars is an important measure to minimize the negative effects of drought stress.
Qin Fang +7 more
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Transactions of the American Mathematical Society, Series BWe generalize the notion of a root system by relaxing the conditions that ensure that it is invariant under reflections and study the resulting structures, which we call generalized root systems (GRSs). Since both Kostant root systems and root systems of Lie superalgebras are examples of GRSs, studying GRSs provides a uniform axiomatic approach to ...
Dimitrov I., Fioresi R.
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