scholarly journals Silicon-rich Coral Sand Improves Bone Metabolism and Bone Mechanical Properties in Mice

2006 ◽  
Vol 59 (5) ◽  
pp. 265-270
Author(s):  
Yuko Uema ◽  
Asami Teruya ◽  
Ikuko Miyagi ◽  
Fusako Maehira
Keyword(s):  
Mechanical Properties ◽  
Bone Metabolism ◽  
Bone Mechanical Properties ◽  
Coral Sand

scholarly journals The Negative Impact of Selective Activation of Retinoic Acid Receptors on Bone Metabolism and Bone Mechanical Properties in Rats

2016 ◽  
Vol 25 (2) ◽  
pp. 213-218 ◽  
Author(s):  
Beata Nowak ◽  
Agnieszka Matuszewska ◽  
Jarosław Filipiak ◽  
Anna Nikodem ◽  
Anna Merwid-Ląd ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Retinoic Acid ◽  
Bone Metabolism ◽  
Negative Impact ◽  
Retinoic Acid Receptors ◽  
Selective Activation ◽  
Bone Mechanical Properties

The effect of supplementation of calcium, vitamin D, boron, and increased fluoride intake on bone mechanical properties and metabolic hormones in rat

2012 ◽  
Vol 30 (3) ◽  
pp. 211-217 ◽  
Author(s):  
G Ghanizadeh ◽  
M Babaei ◽  
Mohammad Reza Naghii ◽  
M Mofid ◽  
G Torkaman ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Vitamin D ◽  
Bone Mechanical Properties ◽  
Metabolic Hormones ◽  
Fluoride Intake

scholarly journals Mechanical Properties and Microscopic Mechanism of Coral Sand-Cement Mortar

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Luoxin Wang ◽  
Junshuai Mei ◽  
Jing Wu ◽  
Xingyang He ◽  
Hainan Li ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cement Mortar ◽  
Mineral Admixture ◽  
Mineral Admixtures ◽  
Hardened Cement ◽  
Hydration Reaction ◽  
Microscopic Mechanism ◽  
X Ray ◽  
Volume Stability ◽  
Coral Sand

The workability and mechanical performance of coral sand-cement mortar (coral mortar, for short) and the modification effects of mineral admixtures on the coral mortar were studied in this paper. The results showed that the strength of coral mortar was lower than that of standard mortar, but the strength of coral mortar was improved by compositing with the mineral admixture, which can be attributed to the improvement of the microstructure and interface transition area. Scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) were used to explore the microscopic mechanism involved in the mechanical properties, volume stability, and hydration of mortar. The analyses revealed that the internal curing effect of coral sand improved the mechanical properties of mortar and its ability to resist shrinkage. The uneven surface of coral sand formed a meshing state of close combination with the hardened cement mortar, which helped to improve the volume stability of mortar. The Ca2+ and Mg2+ ions from coral sand participated in the hydration reaction of cement, which contributed to generating more hydration products. Moreover, the microaggregate filling and pozzolanic effects of fly ash and slag improved the mechanical properties of coral mortar and resistance to chloride ion diffusion.

scholarly journals Leptin Deficiency and Its Effects on Tibial and Vertebral Bone Mechanical Properties in Mature Genetically Lean and Obese JCR:LA-Corpulent Rats

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Raylene A. Reimer ◽  
Jeremy M. LaMothe ◽  
Ronald F. Zernicke
Keyword(s):  
Mechanical Properties ◽  
Leptin Receptor ◽  
Lumbar Vertebrae ◽  
Insulin Resistance Syndrome ◽  
Proportional Limit ◽  
Leptin Signaling ◽  
Bone Mechanical Properties ◽  
Geometrical Properties ◽  
Leptin Deficiency ◽  
Obese Rats

Leptin signaling deficient rodents have emerged as models of obesity/insulin resistance syndrome. Altered leptin signaling, however, can affect axial and appendicular bone geometrical properties differently, and, thus, we hypothesized that leptin-deficiency would differentially influence mechanical properties of vertebrae and tibiae compared to lean rats. Mature (9 mo) leptin receptor deficient obese (cp/cp;n=8) and lean (+/?;n=7) male JCR:LA-corpulent rats were used to test that hypothesis. Tibiae and the sixth lumbar vertebrae(L6)were scanned with micro-CT and were broken in three point-bending (tibiae) or axial loading(L6). Supporting the hypothesis, vertebrae and tibiae were differentially affected by leptin signaling deficiency. Tibiae, but not vertebrae, were significantly shorter in obese rats and achieved a significantly greater load (>18%), displacement (>15%), and stress (>18%) at the proportional limit, relative to the lean rats. Conversely,L6in obese rats had significantly reduced displacement (>25%) and strain (>32%) at proportional limit, relative to the lean rats. Those combined results suggest that the etiology and duration of obesity may be important determinants of bone mechanical properties, and axial and appendicular bones may be affected differently.

Effects of diet-induced obesity and voluntary wheel running on bone mechanical properties from male young C57/6J mice

Bone ◽  
2011 ◽  
Vol 48 ◽  
pp. S177
Author(s):  
H. Ma ◽  
M. Silvennoinen ◽  
S. Torvinen ◽  
R. Rinnankoski-Tuikka ◽  
H. Kainulainen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Wheel Running ◽  
Voluntary Wheel Running ◽  
Bone Mechanical Properties ◽  
Diet Induced Obesity ◽  
Voluntary Wheel

Influence of physiological effort of growth and chemical composition on antler bone mechanical properties

Bone ◽  
2007 ◽  
Vol 41 (5) ◽  
pp. 794-803 ◽  
Author(s):  
T. Landete-Castillejos ◽  
J.D. Currey ◽  
J.A. Estevez ◽  
E. Gaspar-López ◽  
A. Garcia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Bone Mechanical Properties
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