Differences in Chemical Composition and Internal Structure Influence Systemic Host Response to Implants of Biomaterials

2011 ◽  
Vol 34 (5) ◽  
pp. 422-431 ◽  
Author(s):  
Silvia Scaglione ◽  
Michele Cilli ◽  
Mauro Fiorini ◽  
Rodolfo Quarto ◽  
Giuseppina Pennesi
Keyword(s):  
Chemical Composition ◽  
Internal Structure ◽  
Host Response

Study on Fire Resistance of Cement

2013 ◽  
Vol 320 ◽  
pp. 308-313
Author(s):  
Lian Wei Shan ◽  
Jun Li Zhang ◽  
Wei Li ◽  
Zhao Jing Liu ◽  
Ze Wu ◽  
...  
Keyword(s):  
Weight Loss ◽  
Compressive Strength ◽  
Chemical Composition ◽  
Theoretical Analysis ◽  
Internal Structure ◽  
Fire Resistance ◽  
Room Temperature ◽  
Strength Loss ◽  
Hydration Products

This work aims to study the effect of sintering temperatures on the compressive strength and weight of net cement. The compressive strength and quality variety of cement which undergo different sintering temperatures (400°C, 600°C, 800°C, 900°C) and sintered at different times (1h, 2h) are studied through experiments and theoretical analysis. By using XRD explore the inner of sample chemical composition and further obtain the mechanism about sample of weight loss and strength loss. The main internal components of cement are Ca (OH)2, C-S-H, Ca2SiO3 and CaCO3 at room temperature. When the temperature was up to 400°C, The internal structure of cement started to be destroyed due to its hydration products C-S-H, Ca (OH)2 and CaCO3 began to decompose slowly. Keywords: Cement, Fire resistance, Compressive strength

scholarly journals Hyades Distance and Chemical Composition From the Competitive use of Astrometry, Photometry, Spectroscopy, and Internal Structure Computation

1980 ◽  
Vol 85 ◽  
pp. 91-103 ◽  
Author(s):  
G. Cayrel de Strobel
Keyword(s):  
Chemical Composition ◽  
Internal Structure ◽  
Spectroscopic Data ◽  
The Sun ◽  
Hyades Cluster

An analysis of observational astrometric, photometric, spectroscopic data for the Hyades cluster is performed in order to compare Hyades G dwarfs to the sun. Internal structure computations are also used to compare the solar ZAMS with the Hyades ZAMS and to discuss the constraints existing between distance and chemical composition for the cluster.

scholarly journals Characteristics of native gold at Kosumnerskoe placer gold deposit (the Nether-Polar Urals)

2018 ◽  
pp. 24-30
Author(s):  
M. A. Boguslavskiy ◽  
S. O. Khudyakov
Keyword(s):  
Chemical Composition ◽  
Internal Structure ◽  
Gold Deposit ◽  
Granulometric Composition ◽  
Native Gold ◽  
Gold Deposits ◽  
Single Type ◽  
Placer Gold ◽  
Polar Urals ◽  
Gravel Deposit

The paper presents the results of a study of heavy mineral concentrates of Kosumnerskoe gold deposit as well as the native gold from them. This gold deposit includes two gravel deposits. The granulometric composition, morphology, roundness, flatness, presence of intergrowths of gold with other minerals, as well as the character of the surface, the chemical composition and internal structure of gold, have been investigated. Based on these results, the placer gold of rivers Narta-Yu and Nester-Shor has been concluded to be similar in morphology, chemical composition and internal structure so it allows attributing them to a single type of motherload, which could be named as gold-polysulfide-quartz type. On the results of the analysis of two gold deposits of this field, the gravel deposit of the river Nester-Shor has been concluded to be elder than gravel deposit of the river Narta-Yu.

scholarly journals Composition of the lunar mantle for lower mantle high-velocity seismic model

2021 ◽  
Vol 2103 (1) ◽  
pp. 012032
Author(s):  
E V Kronrod ◽  
V A Kronrod ◽  
O L Kuskov ◽  
Y A Nefedyev ◽  
A O Andreev
Keyword(s):  
Chemical Composition ◽  
Internal Structure ◽  
Lower Mantle ◽  
Equations Of State ◽  
Seismic Velocities ◽  
The Moon ◽  
Minimization Method ◽  
S Waves ◽  
Mass Moment ◽  
Using Data

Abstract We investigated models of the internal structure of initially homogeneous Moon differentiated as a result of partial melting, using data on seismic velocities according to the seismic models assume the zonal structure of the lunar mantle is a model of the Moon which was obtained with using the array processing methods of high velocities in the lower mantle. As a result of inversion of gravity (mass, moment of inertia), seismic (P- and S-waves velocities) and petrological (balance ratios) data, the Monte Carlo method was used to reconstruct the chemical composition and internal structure of the Moon. The phase composition and physical properties of the mantle were obtained with Gibbs free energy minimization method and equations of state in the five-component system CaO-FeO-MgO-Al2O3-SiO2. For all models, possible values of seismic velocities and concentrations of the main oxides in three zones of the mantle were obtained, satisfying the geochemical and geophysical constraints and the possible sizes of the Fe-10%S core were determined. It was found that the lunar mantle chemical composition (concentration of FeO, Al2O3 and CaO) differs depending on the mantle zone. Constraints on the values of seismic velocities in the lower mantle and the most probable size of the lunar core were determined: VP ≤ 8.45 km/s; Fe-10%S core radius is ∼360 km.

scholarly journals Studies on the internal structure and chemical composition of hens egg

1956 ◽  
Vol 27 (2) ◽  
pp. 135-141
Author(s):  
MICHIO SAITO ◽  
HIDEYO YAMADA ◽  
CHOKAN OAGWA
Keyword(s):  
Chemical Composition ◽  
Internal Structure

Preparation of thermoplastic molding from steamed Japanese beech flour

Holzforschung ◽  
2010 ◽  
Vol 64 (2) ◽  
Author(s):  
Isoko Takahashi ◽  
Takanori Sugimoto ◽  
Yasuo Takasu ◽  
Mariko Yamasaki ◽  
Yasutoshi Sasaki ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Physical Properties ◽  
Water Absorption ◽  
Internal Structure ◽  
Bending Strength ◽  
Wood Flour ◽  
Beech Wood ◽  
High Density ◽  
Molding Process ◽  
Japanese Beech

Abstract Thermoplastic molding has been prepared from beech wood flour steamed at 180°C or at higher temperatures without any additives. It exhibited a smooth and lustrous surface and had a high density of approximately 1.45 g cm-3. The internal structure of molding revealed that the flour particles were completely surrounded by black resin-like substance which was thermoplasticized by heat and pressure during the molding process. The chemical composition of the steamed flour and physical properties of molding were examined as a function of steaming temperature. Maximum bending strength and Young's modulus of molding reached 63 MPa and 11 GPa, respectively, at 180°C of steaming, which were much higher than those of a hardboard. The water absorption of the molding was 8% or less and decreased with the steaming temperature.

scholarly journals Testing microphysics data

2013 ◽  
Vol 9 (S301) ◽  
pp. 221-228
Author(s):  
Przemysław Walczak ◽  
Jadwiga Daszyńska-Daszkiewicz
Keyword(s):  
Chemical Composition ◽  
Equation Of State ◽  
Internal Structure ◽  
High Precision ◽  
Input Data ◽  
Test Input

AbstractHigh precision asteroseismic data provide a unique opportunity to test input microphysics such as stellar opacities, chemical composition or equation of state. These tests are possible because pulsational frequencies as well as amplitudes and phases of the light variations are very sensitive to the internal structure of a star. We can therefore compute pulsation models and compare them with observations. The agreement or differences should tell us whether some models are adequate or not, and which input data need to be improved.

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