New data on the palaeosteohistology and growth dynamic of the notosuchian Araripesuchus Price, 1959

Lethaia ◽  
2021 ◽  
Author(s):  
María L. Fernández Dumont ◽  
Maria E. Pereyra ◽  
Paula Bona ◽  
Sebastián Apesteguía
Keyword(s):  
Growth Dynamic

scholarly journals Growth Dynamic of Allogeneic and Autogenous Bone Grafts in a Vertical Model

2018 ◽  
Vol 29 (4) ◽  
pp. 325-334 ◽  
Author(s):  
Julio Leonardo de Oliveira Lima ◽  
Daniel Isaac Sendyk ◽  
Wilson Roberto Sendyk ◽  
Cristiane Ibanhes Polo ◽  
Luciana Correa ◽  
...  
Keyword(s):  
Bone Formation ◽  
Bone Growth ◽  
Pure Titanium ◽  
Bone Grafts ◽  
Autogenous Bone ◽  
Growth Dynamic ◽  
Freeze Dried ◽  
Fresh Frozen ◽  
Hollow Cylinders ◽  
Autogenous Bone Grafts

Abstract Several techniques have been proposed for vertical bone regeneration, and many of them use bone autogenous and allogeneic grafts. The purpose of this study was to compare demineralised freeze-dried bone allografts (DFDBA), fresh-frozen (FF) allografts, autogenous bone grafts to find differences between volumetric and histological quantity of bone formation and vertical bone growth dynamic. A vertical tissue regeneration bone model was performed in rabbit calvarias under general anaesthesia. Four hollow cylinders of pure titanium were screwed onto external cortical bone calvarias in eight rabbits. Each one of the cylinders was randomly filled with one intervention: DFDBA, FF, autogenous bone, or left to be filled with blood clot (BC) as control. Allogeneic grafts were obtained from a ninth animal following international standardised protocols for the harvesting, processing, and cryopreservation of allografts. Autogenous graft was obtained from the host femur scraping before adapting hollow cylinders. Animals were euthanized at 13 weeks. Vertical volume was calculated after probe device measurements of the new formed tissue inside the cylinders and after titanium cylinders were removed. Histomorphometry and fluorochrome staining were used to analyse quantity and dynamic of bone formation, respectively. Results showed that DFDBA and fresh-frozen bone improved the velocity and the quantity of bone deposition in distant portions of the basal plane of grafting. Remaining material in allograft groups was more intense than in autogenous group. Both allografts can be indicated as reliable alternatives for volume gain and vertical bone augmentation.

Histologic growth dynamic study of Edmontosaurus regalis (Dinosauria: Hadrosauridae) from a bonebed assemblage of the Upper Cretaceous Horseshoe Canyon Formation, Edmonton, Alberta, Canada

2014 ◽  
Vol 51 (11) ◽  
pp. 1023-1033 ◽  
Author(s):  
Evan Vanderven ◽  
Michael E. Burns ◽  
Philip J. Currie
Keyword(s):  
Life History ◽  
Body Size ◽  
Upper Cretaceous ◽  
Growth Dynamics ◽  
Growth Dynamic ◽  
History Data ◽  
Life History Data ◽  
Fundamental Systems ◽  
Horseshoe Canyon Formation ◽  
Upper Campanian

The Danek Bonebed (Edmonton, Alberta, Canada) is a monodominant Edmontosaurus regalis assemblage of the upper Campanian (Upper Cretaceous) Horseshoe Canyon Formation. Bone histology of humeri and femora are used in this paper to test hypotheses about the growth dynamics and palaeobiology of Edmontosaurus. The high number of elements collected from the Danek Bonebed allow for an expansion of the multi-element histological record for hadrosaurs. Results indicate that Edmontosaurus had a growth trajectory similar to other large-bodied dinosaurs and reached the onset of somatic maturity at about 10–15 years of age; however, even the largest elements to preserve lines of arrested growth do not have external fundamental systems. This timing of the onset of somatic maturity agrees with the estimated body size of Edmontosaurus relative to other dinosaurs for which life-history data are available. Vascularity patterns support the hypothesis that edmontosaurs preserved at the Danek Bonebed were not subject to the same extreme seasonal environmental shifts as congenerics preserved at higher latitudes, further supporting overwintering behaviour in the latter.

Evaluation of the stapedial tendon growth dynamic in human fetuses

2019 ◽  
Vol 41 (7) ◽  
pp. 833-839 ◽  
Author(s):  
Orhan Beger ◽  
Turan Koç ◽  
Meryem İlkay Karagül ◽  
Deniz Ladin Özdemir ◽  
Fatma Müdüroğlu ◽  
...  
Keyword(s):  
Growth Dynamic ◽  
Human Fetuses

Root growth dynamic and plant performance of nectarine trees amended with biochar and compost

2019 ◽  
Vol 257 ◽  
pp. 108710 ◽  
Author(s):  
Giovambattista Sorrenti ◽  
Enrico Muzzi ◽  
Moreno Toselli
Keyword(s):  
Root Growth ◽  
Plant Performance ◽  
Growth Dynamic

Pathology Without Crisis? The Strange Demise of the Anglo-Liberal Growth Model

2011 ◽  
Vol 46 (1) ◽  
pp. 1-31 ◽  
Author(s):  
Colin Hay
Keyword(s):  
Economic Growth ◽  
Growth Model ◽  
Paradigm Shift ◽  
Growth Dynamic ◽  
Old Growth ◽  
To Come ◽  
The Uk ◽  
Economic Thinking

AbstractIn the wake of the deepest and longest recession the UK has experienced since the 1930s, this article examines the origins, sustenance and puncturing of the growth dynamic the UK economy enjoyed between 1992 and 2007. In so doing it seeks to gauge the interventions made to attempt to shore up the growth model and the prospects for the resumption of growth. It argues that the Anglo-liberal growth model is, indeed, fatally flawed and that, in the absence of a new growth model, it is difficult to see how sustained economic growth can be achieved. Yet it also argues that, at present, no alternative growth model is on offer and that it is wrong to infer the likelihood of a paradigm shift in economic thinking from the ‘inter-paradigm’ borrowing used to shore up the old growth model in the midst of the recession. If crises are judged as much by the transformations to which they give rise as by the accumulation of pathologies out of which they crystallize, then what we have experienced to date is not so much a crisis as a catastrophic equilibrium. Though the symptoms to which it has given rise are pregnant with the possibility of crisis, the crisis itself is yet to come.

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