Now showing items 1-10 of 215
Metasurface Optics for On-Demand Polarization Transformations Along the Optical Path
(Springer Science and Business Media LLC, 2021-01-28)
Polarization plays a key role in science; hence its versatile manipulation is crucial. Existing polarization optics, however, can only manipulate polarization in a single transverse plane. Here, we demonstrate a new class ...
Heresies: On an Armenian prayer to the sun
The Interrupted Feast
Aquatic and terrestrial takeoffs require different hindlimb kinematics and muscle function in mallard ducks
(The Company of Biologists, 2020-06-25)
Mallard ducks are capable of performing a wide range of behaviors including nearly vertical takeoffs from both terrestrial and aquatic habitats. The hindlimb plays a key role during takeoffs from both media. However, because ...
Broad Similarities in Shoulder Muscle Architecture and Organization Across Two Amniotes: Implications for Reconstructing Non-Mammalian Synapsids
The evolution of upright limb posture in mammals may have enabled modifications of the forelimb for diverse locomotor ecologies. A rich fossil record of non-mammalian synapsids holds the key to unraveling the transition ...
The Square Model of Fano's 1892 Finite 3-Space
This is a more detailed presentation of a model of PG(3,2) that first appeared as an abstract in 1979. See "Symmetry invariance in a diamond ring," by Steven H. Cullinane, Notices of the American Mathematical Society, pp. ...
E-resources in the US university library: Harvard’s case under the pandemic
Due to the pandemic, Harvard University swiftly switched its instruction from in-person to remote in the middle of March 2020. The online instruction continues through the fall semester. Providing online resources have ...
The Evolution of Imprinted microRNAs and Their RNA Targets
(MDPI AG, 2020-09-03)
Mammalian genomes contain many imprinted microRNAs. When an imprinted miRNA targets an unimprinted mRNA their interaction may have different fitness consequences for the loci encoding the miRNA and mRNA. In one possible ...
Atmospheric Opacity Has a Non-linear Effect on Global Crop Yields
(Springer Science and Business Media LLC, 2021-03-19)
Agricultural impacts of air pollution, climate change and geoengineering remain uncertain due to potentially offsetting changes in the quantity and quality of sunlight. By leveraging year-to-year variation in growing season ...