Results 141 to 150 of about 16,592 (267)

Evolution of recent economic-demographic modeling: A synthesis

open access: yes
O11, J1, O4, Demography, convergence, growth,
Robert Schmidt, Allen Kelley
core   +1 more source

Invariant-mass spectrum of O11

open access: yes, 2020
T. Webb   +23 more
semanticscholar   +1 more source

Effects of Pr₆O11 Addition on the Acid Resistance of Ceramic Proppant.

open access: yesMaterials (Basel, Switzerland)
This paper investigated the effect of Pr₆O11 addition on the acid resistance of ceramic proppant. Acid resistance of proppants can be improved by introducing Pr₆O11 into the Al₂O₃-CaO-MgO-SiO₂ (ACMS) system. To illustrate and explain the mechanism of acid resistance, the samples were characterized by different techniques, using X-ray powder diffraction
Guodong, Xiong, Bolin, Wu, Tingting, Wu
openaire   +1 more source

A second monoclinic polymorph of ferrocenecarboxaldehyde. [PDF]

open access: yesActa Crystallogr E Crystallogr Commun
Lasri J   +4 more
europepmc   +1 more source

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