Results 91 to 100 of about 3,864 (208)

APPLICATION OF THE FRACTAL THEORY FOR STUDYING BRUSHIT CRYSTALLIZATION PROCESS IN THE PRESENCE OF ADDITIVES

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2019
The paper considers the possibility of using the fractal analysis method for brushite-based samples, including modified with organic and inorganic additives. The dependencies between fractal parameters and properties of samples are determined.
V.M. Kiselev, O.A. Golovanova
doaj   +1 more source

Biological and mechanical performance of calcium phosphate cements modified with phytic acid

open access: yesJournal of Materials Science: Materials in Medicine
Calcium phosphate cements, primarily brushite cements, require the addition of setting retarders to ensure adequate processing time and processability. So far, citric acid has been the primary setting retarder used in this context.
Valentin C. Steinacker   +10 more
doaj   +1 more source

AFM study of the epitaxial growth of brushite (CaHPO4� 2H2O) on gypsum cleavage surfaces

open access: yes, 2010
The epitaxial overgrowth of brushite (CaHPO4·2H 2O) by the interaction of phosphate-bearing, slightly acidic, aqueous solutions with gypsum (CaSO4·2H2O) was investigated in situ using atomic force microscopy (AFM).
E. Ruiz-Agudo (2088814)   +5 more
core   +2 more sources

Mineralogical analyses in Peştera Polovragi (Olteţului Gorges) and Peştera Muierii (Galbenului Gorges), Gorj county

open access: yesTravaux de l'Institut de Speologie Emile Racovitza, 2009
Following a series of cave mineralogy researches in Peştera Polovragi and Peştera Muierii, Gorj County, we evidence an association made up of hydroxylapatite, taranakite, calcite and secondarily of quartz and illite and respectively, of hydroxylapatite ...
GABRIEL DIACONU   +2 more
doaj  

Mineralogical researches in "Peștera cu Lilieci din satul Peștera", Bran-Rucăr Passage

open access: yesTravaux de l'Institut de Speologie Emile Racovitza, 2008
By means of X-rays diphractometric analyses on powders, we evidence an association of minerals in “Peştera cu Lilieci din satul Peştera”, made up of hydroxylapatite(carbonate-hydroxylapatite), brushite, taranakite, calcite, quartz, illite and ...
GABRIEL DIACONU   +2 more
doaj  

Influence of Humic Acid and Gypsum on Phosphorus Dynamics and Rice Yield in an Acidic Paddy Soil of Thailand

open access: yesSoil Systems
Managing phosphorus (P) in acidic paddy soils is crucial for sustaining rice yields. However, the effects of combined humic acid (HA) and flue gas desulfurization gypsum (FG), a by-product of coal-fired power plants, on P forms remain poorly understood ...
Hartina   +4 more
doaj   +1 more source

Comparison of urinary risk factors for calcium kidney stones in South African black and white subjects is a strategic approach for gaining insights into local and global stone pathogenesis

open access: yesThe Journal of Medical Laboratory Science & Technology of South Africa
Background: In South Africa, kidney stones are relatively rare in the black population (B) compared to their white compatriots (W). Inter-race studies of urinary stone-risk factors have not identified unequivocal reasons to explain this anomaly. Aim: The
Allen L. Rodgers
doaj   +1 more source

Understanding Calcium Phosphate Crystallization: Brushite

open access: yes
Kidney stone disease is increasingly prevalent, and brushite - a mineral formed from dicalcium phosphate dihydrate (CaHPO4. 2H2O) - plays a significant role in kidney stone formation.
Le, Anh
core  

Setting Properties of Brushite and Hydroxyapatite Compound Cements

open access: yes
In this work properties of new brushite and hydroxyapatite compound cements are investigated. Particular attention is paid to obtaining suitable setting properties for cements with different brushite and hydroxyapatite ratios.
Irbe, Zilgma   +2 more
core   +1 more source

Optimising calcium phosphate cement formulations to widen clinical applications [PDF]

open access: yes, 2011
The demand for reconstructive orthopaedic implants continues expanding at a reasonable pace as the incidence of fracture injuries and infectious diseases rises.
Patel, Sarika
core   +1 more source

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