There was a wide vacuum in the literature," Morrison said.
Effectively, an infinite array of 2D-periodic slabs of material is separated by wide vacuum spacings.
For the surface calculations, we employed a 2 × 2 supercell with six Al x Ga1 – xN bilayers separated by a 13-Å wide vacuum region [22] and a 4 × 4 × 1 k-point mesh.
To model the (001) surface, the supercell periodicity was kept within the ab plane, while, along c, it was elongated from ≈15.5 to 30 nm, thus creating a slab with a wide vacuum space between its two sides.
It risks creating a wider security vacuum that radical forces will willingly fill.
The interval of striation rings is wider for vacuum-grown whiskers as compared with air-grown whiskers.
Patients with radiologically suspicious lesions are recalled for further assessment that may include clinical examination, special mammographic views, ultrasound and collection of tissue for pathological assessment by fine-needle aspiration cytology (FNAC), core biopsy (CB), or more recently, by wide bore vacuum biopsy.
The use of wide-bore, vacuum-assisted, needle biopsy may also improve diagnosis and assessment in difficult cases (Pijnappel et al, 2004).
A cryogen boil-off calorimeter system was designed and fabricated to measure the temperature profile and the apparent thermal conductivity of FMLI samples over a wide range of vacuum level (10−3 - 105 Pa).
FNAB is a procedure in which a fine gauge needle (ranging from 18G to 25G, preferably 23 to 25G) is inserted into a lesion and moved in multiple directions for wider sampling, usually under vacuum, to retrieve cells and microfragments of tissue.
By opening a motor-driven lid, the experiments are exposed to solar light, cosmic rays, vacuum and wide temperature fluctuations.
