The phrase "available spheres" is correct and usable in written English.
It can be used in contexts where you are referring to different areas, domains, or fields that are accessible or open for use or exploration.
Example: "In our research, we have identified several available spheres for collaboration with other institutions."
Alternatives: "accessible domains" or "open areas".
But, since the scale of the job makes it improbable that any one candidate will embody every available sphere of expertise, the pertinent question may not be whether Ms Spielman is the perfect candidate, but whether the bloated Ofsted remit might be beyond the scope of any one individual – or one institution.
Since analytical solutions are available for spheres, it is instructive to consider a cluster of nanospheres.
Using commercially available fluorescent spheres of three different sizes (0.5, 1 and 3 µm) and by stretching them to form rods and oblate ellipsoids [16], a panel of 9 different particle geometries with 3 different shapes and 3 different sizes was created (Figure 2).
We designed and built a programmable integrating sphere light (PISL) source which consists of nine LEDs, light-collecting optics, a commercially available integrating sphere and a baffle.
In a recent work, we constructed modular multisphere system which expands upon the design of an existing, commercially available Bonner sphere system by adding concentric shells of copper, tungsten, or lead.
SPHERES (available at neuralengr.com/spheres) is a stand-alone GUI application that allow consideration of arbitrary montages on a concentric sphere model by leveraging an analytical solution.
At launch available apps include Sphere, BuzzFeed, Meebo, PollDaddy, PicApp, JS-Kit, and Kwanzoo, along with a video delivery widget developed in-house called GlamTV.
In icosahedron-based geodesic domes, the flat bottoms are available from half-sphere of even frequencies, whereas no flat bottoms are available from those of odd frequencies.
In order to calculate the circular polarization of light that has been scattered by intrinsically asymmetric (homochiral) particles, we utilized publically available paralleled Multiple Sphere T-matrix (MSTM) code developed and maintained by Daniel Mackowski at http://eng.auburn.edu/users/dmckwski/scatcodes/.
The two commercially available products, SIR-Spheres® (Sirtex Medical Limited, North Sydney, NSW, Australia) and TheraSphere® (Nordion, Ottawa, Canada), use empirical methods for dose calculation, based on body surface area and total liver weight respectively.
