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Mostrando ítems 11-20 de 10000
Tamm Review: Deep fine roots in forest ecosystems: Why dig deeper?
(2020-06-15)
While the number of studies dealing with fine root dynamics in deep soils layers (depth > 1 m) has increased sharply recently, the phenology, the morphology, the anatomy and the role of deep fine roots are still poorly ...
Root canal treatment of three-rooted maxillary second premolars: Report of four cases
(Wiley-Blackwell Publishing, Inc, 2009-08-01)
The aim of this report is to contribute to a better understanding of the radiographic, clinical and anatomic findings in maxillary second premolars. This paper reports the endodontic treatment of two cases of three-rooted ...
Root canal treatment of three-rooted maxillary second premolars: Report of four cases
(Wiley-Blackwell Publishing, Inc, 2009-08-01)
The aim of this report is to contribute to a better understanding of the radiographic, clinical and anatomic findings in maxillary second premolars. This paper reports the endodontic treatment of two cases of three-rooted ...
The effect of root exudates on root architecture in Arabidopsis thaliana
(Springer, 2011-07)
Root architecture is of key importance for plant nutrition and performance. It is known that root architecture is determined by genetics and environmental conditions. The aim of the present study was to evaluate if root ...
Mechanical and biological approaches to alleviate soil compaction in tropical soils: assessed by root growth and activity (Rb uptake) of soybean and maize grown in rotation with cover crops
(Wiley-Blackwell, 2017-03-01)
Chiselling has been used to alleviate soil compaction but cover crops with deep, vigorous roots can improve root growth and activity of the cash crop for a longer time. The determination of root activity in addition to ...
Canal preparation and filling techniques do not influence the fracture resistance of extensively damaged teeth
(2014-01-01)
The purpose of this study was to assess the fracture resistance of extensively damaged teeth after two root canal preparation techniques (hand and rotary files) and after two filling techniques (active and passive compaction). ...
Histological events during in vitro rooting of Nothofagus nervosa (Fagaceae)
(Taylor & Francis, 2005-12)
In vitro rooting protocols were previously performed on Nothofagus nervosa to optimise the culture medium and environmental conditions. A qualitative and quantitative tissue differentiation study during adventitious rooting ...
A scanning electron microscopy study of diseased root surfaces conditioned with EDTA gel plus Cetavlon after scaling and root planing
(Oxford University Press, 2011-04-01)
In the present investigation, a scanning electron microscopy analysis was performed to evaluate the effects of the topical application of ethylenediaminetetraacetic acid (EDTA) gel associated with Cetavlon (EDTAC) in ...
The Ca2+ pump inhibitor, thapsigargin, inhibits root gravitropism in Arabidopsis thaliana
(Sociedad de Biología de Chile, 2006)
Thapsigargin, a specific inhibitor of most animal intracellular SERCA-type Ca2+ pumps present in the sarcoplasmic/endoplasmic reticulum, was originally isolated from the roots of the Mediterranean plant Thapsia gargancia ...