For burrowing bivalves, such a body organization allows deep burrowing in a vertical (head down) orientation, and thus escape from the sediment surface.
Interestingly, the murine MHC class I molecule H-Kb, which is structurally related to MHCII molecules, was suggested to adopt a supine (lying down) orientation on the membrane, with the peptide binding site close to the membrane (while remaining accessible to the T cell receptor and the CD8 coreceptor [40]).
This provides us with 240 × 120 pixel images, mostly containing a single embryo in a standard dorsal up)/anterior(down) orientation and no background.
At the same time, similar to the case when free-standing graphene is used as a substrate, for the H2O/graphene/Ni(111) system, DOWN orientation is the energetically most favorable one and the preferable adsorption site is the center of the carbon ring.
With the increase in electrode potential, the ss-SO peak intensities first increase slightly due to further adsorption of the TBPS, and then, decrease steadily, ascribing to a conformation change of adsorbed TBPS molecules from an upright to a lie-down orientation.
In addition, DOWN orientation is clearly more preferred in this case as compared to the opposite one (i.e., UP).
Both the up and down orientation of the cup dosimeters, set in the first stage of measurement, each produced the same results of Rn concentration.
Results from the simulated shipping study showed that shock/drop reduced re-dispersion time while truck and aircraft vibrations increased re-dispersion time in the tip down orientation.
Further, this same (110) contact face of Form I′ provides the potential to observe in direct space (i.e. by AFM) the up or down orientation of helices.
Delta winglet pairs working as longitudinal vortex generators are punched only around the first transverse row of tubes in reduced size, with either "common flow up" or "common flow down" orientation.
