у нас

У (предлог) - at (при указании места); in, for, with (чего-либо); on the part of (кого-либо); to. Часто этот предлог вообще не переводится, например: "У нас" - we

 In his experiments young seedings were used where both the relative growth rate and ion fluxes at the root surface would have been greater than in the tillers used in our experiments.

 In agreement with L. [...] we did not find evidence of any crossover temperature beyond which NO3- uptake exceeded NH4+, such as was found in lettuce.

 The separation of the light components is as good as with the store column.

 There are certain drawbacks to these techniques.