The Ames room illusion is one of the best-known geometrical illusions but its geometrical properties are often misunderstood. This study discusses the differences in the geometrical properties between the original Ames room and what have been often referred to as "Ames rooms" in recent studies.
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Phase formation and phase stability for the homogenous and heterogeneous amorphous metals versus the crystalline phase.
Proc Natl Acad Sci U S A
January 2025
Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011.
From molecular dynamics (MD) simulations of melt-quenching and thermal aging procedures in pure Ag, Cu, Ag-Cu binary alloys, and Cu-Zr binary alloys, we have identified two distinct amorphous phases for a metastable undercooled liquid: the homogeneous L-phase with low shear rigidity and the heterogenous G-phase with much higher shear rigidity and a heterogeneity length scale Λ. Here, we examine two-phase equilibration studies showing that the G-phase melts to form the L-phase above ~1,000 K, which then transforms to form the crystal (X) phase; however, below the melting point of the G-Phase (~990 K), the X- and G-phases do not transform into each other. We suggest the presence of a G-phase is likely responsible for embrittlement often observed in metallic glasses.
View Article and Find Full Text PDFPerspectives of Midwives and Nurse Practitioners in Kentucky on Exercise Counseling During Pregnancy: A Qualitative Study.
SAGE Open Nurs
January 2025
Exercise Science, Western Kentucky University, Bowling Green, KY, USA.
Introduction: Healthcare professionals are in an optimal position to deliver exercise information to pregnant women, yet previous research suggests this seldom happens. Midwives and nurse practitioners, who may have more time with pregnant women, are particularly well suited for this role.
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The gap between surgeon goal and achieved sagittal alignment in adult cervical spine deformity surgery.
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6Presbyterian St. Lukes Medical Center, Denver, Colorado.
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View Article and Find Full Text PDFManipulating ambient pressure superconductivity in metal borocarbides through hole doping.
J Phys Condens Matter
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U.S. DOE and Department of Physics and Astronomy, Iowa State University, U.S. DOE and Department of Physics and Astronomy, Ames, Iowa, 50011-2042, UNITED STATES.
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View Article and Find Full Text PDFExperimental Testing of the Theoretically Predicted Magnetic Properties for Kagomé Compounds in the Li-Fe-Ge System.
Inorg Chem
December 2024
Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.
Investigating material properties is essential to assessing their application potential. While computational methods allow for a fast prediction of the material structure and properties, experimental validation is essential to determining the ultimate material potential. Herein, we report the synthesis and experimental magnetic properties of three previously reported Kagome compounds in the Li-Fe-Ge system.
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