نتایج جستجو برای: blind mineralization

تعداد نتایج: 96452  

2017
Arwa Gera Lipa Bodner Eliyahu Mass Uri Zilberman

Enamel mineralization is affected by genetic disorders like Down syndrome and familial dysautonomia (FD). Congenital Insensitivity to Pain with Anhidrosis (CIPA) is associated with decreased sensation and autonomic dysfunction, somehow similar to FD. In this study we examined the effect of CIPA on pre and post-natal enamel mineralization of 9 primary extracted teeth and matchpaired normal teeth...

Journal: :Environmental science & technology 2014
Thea Whitman Zihua Zhu Johannes Lehmann

Soil organic carbon (SOC) is a critical and active pool in the global C cycle, and the addition of pyrogenic organic matter (PyOM) has been shown to change SOC cycling, increasing or decreasing mineralization rates (often referred to as priming). We adjusted the amount of easily mineralizable C in the soil, through 1-day and 6-month preincubations, and in PyOM made from maple wood at 350 °C, th...

Journal: :Journal of biomedical materials research. Part A 2008
Lars Mulder Jan Harm Koolstra Jaap M J den Toonder Theo M G J van Eijden

It is unknown how the degree of mineralization of bone in individual trabecular elements is related to the corresponding mechanical properties at the bone tissue level. Understanding this relationship is important for the comprehension of the mechanical behavior of bone at both the apparent and tissue level. The purpose of the present study was, therefore, to determine the tissue stiffness and ...

2012
Isaac A. Rodriguez Parthasarathy A. Madurantakam Jennifer M. McCool Scott A. Sell Hu Yang Peter C. Moon Gary L. Bowlin

The current bone autograft procedure for cleft palate repair presents several disadvantages such as limited availability, additional invasive surgery, and donor site morbidity. The present preliminary study evaluates the mineralization potential of electrospun polydioxanone:nano-hydroxyapatite : fibrinogen (PDO : nHA : Fg) blended scaffolds in different simulated body fluids (SBF). Scaffolds we...

2011
Lin-Na Ma Xiao-Tao Lü Yang Liu Ji-Xun Guo Nan-Yi Zhang Jian-Qin Yang Ren-Zhong Wang

BACKGROUND Both climate warming and atmospheric nitrogen (N) deposition are predicted to affect soil N cycling in terrestrial biomes over the next century. However, the interactive effects of warming and N deposition on soil N mineralization in temperate grasslands are poorly understood. METHODOLOGY/PRINCIPAL FINDINGS A field manipulation experiment was conducted to examine the effects of war...

2017
M. S. Booth E. Rastetter Joshn Stark MARY S. BOOTH JOHN M. STARK

Isotope pool dilution studies are increasingly reported in the soils and ecology literature as a means of measuring gross rates of nitrogen (N) mineralization, nitrification, and inorganic N assimilation in soils. We assembled data on soil characteristics and gross rates from 100 studies conducted in forest, shrubland, grassland, and agricultural systems to answer the following questions: What ...

Abedini, , Aliyari, , Calagari, , Faridazad, , Khan Chuban, ,

The sedimentary copper mineralization of the Sorkheh area is located about 20 km northwest of Marand, East-Azarbaidjan Province, northwest Iran. The most important lithologic units in this area include sandstones and red-color shales, with the Late Miocene age, that are intruded by lamprophyric dike. The copper mineralization in the study area occurred as stratiform laminations and disseminatio...

2017
Ashit Rao José L. Arias Helmut Cölfen Andreas Taubert

Synergistic relations between organic molecules and mineral precursors regulate biogenic mineralization. Given the remarkable material properties of the egg shell as a biogenic ceramic, it serves as an important model to elucidate biomineral growth. With established roles of complex anionic biopolymers and a heterogeneous organic scaffold in egg shell mineralization, the present study explores ...

2014
Jeroen van de Peppel Johannes P. T. M. van Leeuwen

Bone formation is indirectly influenced by 1,25-dihydroxyvitamin D3 (1,25D3) through the stimulation of calcium uptake in the intestine and re-absorption in the kidneys. Direct effects on osteoblasts and bone formation have also been established. The vitamin D receptor (VDR) is expressed in osteoblasts and 1,25D3 modifies gene expression of various osteoblast differentiation and mineralization-...

Journal: :Journal of pediatric hematology/oncology 2003
Cristina Azcona Ellen Burghard Elena Ruza Juan Gimeno Luis Sierrasesúmaga

PURPOSE To assess bone mineralization in adolescents with bone tumors at remission using quantitative digital ultrasound (QUS) and dual-energy x-ray absorptiometry (DEXA), and to compare the bone mineralization values obtained by both methods. METHODS Patients studied were 36 adolescents (21 boys, 15 girls) who had completed treatment of a bone tumor at the University Hospital of the Universi...

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