Bombardment-induced compositional change in MgAl2O4, MgO and A12O3

1992 ◽  
Vol 65 (1-4) ◽  
pp. 97-101 ◽  
Author(s):  
Giovanni Marietta ◽  
Fabio Iacona ◽  
Roger Kelly
Keyword(s):  
Compositional Change

Drivers of species richness and compositional change in Scottish coastal vegetation

2016 ◽  
Vol 20 (2) ◽  
pp. 183-193 ◽  
Author(s):  
Robin J. Pakeman ◽  
Richard L. Hewison ◽  
Rob J. Lewis
Keyword(s):  
Species Richness ◽  
Coastal Vegetation ◽  
Compositional Change

Suppressing solvent compositional change during solution growth of SiC using SiC/C gradient crucible

2021 ◽  
pp. 126382
Author(s):  
Sakiko Kawanishi ◽  
Hironori Daikoku ◽  
Hiroyuki Shibata ◽  
Takeshi Yoshikawa
Keyword(s):  
Solution Growth ◽  
Compositional Change

scholarly journals Effect of subclinical mastitis in compositional change in milk and blood parameter of crossbred dairy cow

2020 ◽  
Vol 8 (2) ◽  
pp. 10-12
Author(s):  
Aman Rathaur ◽  
Ved Prakash ◽  
Pankaj Kumar Gupta ◽  
Samar Jeet Singh ◽  
Vinod Bhateshwar
Keyword(s):  
Dairy Cow ◽  
Subclinical Mastitis ◽  
Blood Parameter ◽  
Compositional Change

Compositional Change and Political Change

2016 ◽  
pp. 79-117
Author(s):  
Thomas M. Holbrook
Keyword(s):  
Political Change ◽  
Compositional Change

scholarly journals The Labor Market Effects of Refugee Waves: Reconciling Conflicting Results

ILR Review ◽  
2019 ◽  
Vol 72 (4) ◽  
pp. 818-857 ◽  
Author(s):  
Michael A. Clemens ◽  
Jennifer Hunt
Keyword(s):  
High School ◽  
Labor Market ◽  
Current Population Survey ◽  
Population Survey ◽  
High School Education ◽  
Endogenous Variable ◽  
Racial Composition ◽  
Compositional Change ◽  
Market Effects ◽  
The Impact

Studies have reached conflicting conclusions regarding the labor market effects of exogenous refugee waves such as the Mariel Boatlift in Miami. The authors show that contradictory findings on the effects of the Mariel Boatlift can be explained by a large difference in the pre- and post-Boatlift racial composition in certain very small subsamples of workers in the Current Population Survey. This compositional change is specific to Miami and unrelated to the Boatlift. They also show that conflicting findings on the labor market effects of other important refugee waves are caused by spurious correlation in some analyses between the instrument and the endogenous variable, introduced by applying a common divisor to both. As a whole, the evidence from refugee waves reinforces the existing consensus that the impact of immigration on average native-born workers is small, and it fails to substantiate claims of large detrimental effects on workers with less than a high school education.

Effects of pH on the Transformation of Gypsum to Carbonate Apatite in the Presence of Ammonium Hydrogen Phosphate

2006 ◽  
Vol 309-311 ◽  
pp. 199-202 ◽  
Author(s):  
Ishikawa Kunio ◽  
Yumiko Suzuki ◽  
Shigeki Matsuya ◽  
Masaharu Nakagawa ◽  
Kiyoshi Koyano
Keyword(s):  
The Other ◽  
Dicalcium Phosphate ◽  
Carbonate Apatite ◽  
Compositional Change ◽  
Hydrogen Phosphate ◽  
Detailed Mechanism ◽  
Effects Of Ph ◽  
Ammonium Hydrogen ◽  
Ammonium Hydrogen Phosphate ◽  
Ph Dependent

Effects of pH on the transformation of gypsum to apatite in the presence of ammonium hydrogen phosphate was studied using NH4H2PO4, (NH4)2HPO4 and (NH4)3PO4. When set gypsum was immersed to ammonium hydrogen phosphate, pH of the solution decreased regardless of the solution. Although pH of the solution decreased, no significant compositional change was observed when gypsum was immersed in NH4H2PO4. On the other hand, apatite and small amount of dicalcium phosphate anhydrous (CaHPO4) was formed when gypsum was immersed in (NH4)2HPO4 solution. Only apatite was formed when gypsum was immersed in (NH4)3PO4 solution. Although the detailed mechanism for the pH dependent products has not been clarified, one of the causes may be the different thermodynamical difference between gypsum and apatite. We would like to recommend the use of (NH4)3PO4 solution since this provides higher pH and thus larger thermodynamical difference between apatite and gypsum and resulting pure apatite block.

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