"at an ultimate" is correct and usable in written English
It is generally used to refer to the very end of something. For example, “The ultimate goal of this project is to make a lasting impact on the community, and we are now at an ultimate point in achieving that goal.”
As crowds of well-wishers come to see him, Vimalakīrti employs his superior understanding of "skill in means" (upāya) to teach them about the nature of "emptiness" (śūnyatā), the Mahāyāna Buddhist doctrine that culminates in the counter-intuitive claim that nirvana and saṃsāra, at an ultimate level, are not different.
The Whitbread prize is unusual in that it pits winning books from large fields of competitors in five different categories -- novels, first novels, biography, poetry and children's books -- to arrive at an ultimate winner, much the way a dog show might compare dogs from different breeds in the best of show competition.
To be sure, at an ultimate level, the only actions of substances are changes of perceptions.
The control slab is failed at an ultimate load of 130 kN with a corresponding deflection of 13 mm.
MeJA, GA and NAA was dissolved in sterilized water with 2% ethanol, SA and ABA were dissolved in sterilized water at an ultimate concentration of 1 mM.
The obtained data (Fig. 4) show significant differences in the hydrosorption capacity of WDC and AC, both at a low relative pressure of water vapor (p/p 0 ) and at an ultimate uptake (p/p s).
"An unforgettable concert is now an ultimate at-home entertainment experience with the AC/DC Live: Rock Band Track Pack".
He then feuded with Chris Benoit, whom he defeated at WrestleMania X-Seven but lost to him at Backlash in an Ultimate Submission match; Benoit defeated Angle four falls to three in sudden-death overtime.
The WZY alloy is brittle at 100 °C with an ultimate tensile strength (UTS) of 798 MPa and shows detectable plastic deformation at 150 °C with a total elongation (TE) ~ 3.2% and a UTS of 911 MPa.
The fourth round was announced on the June 19 episode of Impact! to take place at Victory Road in an Ultimate X match.
In fact L'Etre et le néant, [Being and Nothingness] was the last real attempt at modern philosophy - an ultimate attempt to escape from Hegelianism".
