The term "red upper" is not a correct or usable part of a sentence in written English.
However, you could use the term "red uppers" in a sentence to refer to a person's shoes, as in the example sentence "John wore a pair of bright red uppers to the party."
The confinement potential of the quantum well structure under study (blue solid curve) and the energies of the lower (green lower line) and upper states (red upper line).
High emission peaks of Hg and S elements observed by EDX analyses performed on the red upper layer (Figure 5) could be attributed to the pigment cinnabar (HgS).
The flag is a rectangular cloth consisting of two horizontal stripes: a red upper stripe covering two-thirds of the flag's height, and green lower stripe covering one-third.
In Fig. 3 (c), the left V1 is shown with the color coding azimuthal angles of the contralateral right visual hemifield given by the other half of the hue, value, saturation color model, i. e., in counterclockwise direction from cyan (lower hemimeridian) via dark magenta (horizontal hemimeridian) to red (upper hemimeridian).
The color of the right V1 codes the azimuthal angle of the contralateral left visual hemifield by a half color wheel (see Fig. 3 (b)) of the hue, value, saturation color model, i. e., in counterclockwise direction from red (upper hemimeridian) via light green (horizontal hemimeridian) to cyan (lower hemimeridian).
This is indicated by the dominantly red upper portion.
This native beetle is distinguished by a brick-red upper thorax, or pronotum, on an otherwise all black body.
Wounding lead to a rapid emission of a calcium signal at the wound site (in yellow-red, upper part Figure 5B) that decreased rapidly with time.
Shown are Central and Southern German crystalline area (red), Upper Rhine Valley crystalline area (dark red), and Rotliegend volcanics (orange) (modified after Jung et al. (2002)).
Newly crowned French Open champion Li Na the first grand-slam singles winner from Asia is often noted abroad as a tattooed free spirit (red rose, upper left chest) and a pro-tour geriatric (at the hoary age of twenty-nine).
Newly crowned French Open champion Li Na — the first grand-slam singles winner from Asia — is often noted abroad as a tattooed free spirit (red rose, upper left chest) and a pro-tour geriatric (at the hoary age of twenty-nine).
