The phrase "a small time interval" is correct and usable in written English.
It can be used in contexts related to measurements of time, such as in scientific or mathematical discussions.
Example: "The experiment was conducted over a small time interval to observe the initial reactions."
Alternatives: "a brief time period" or "a short duration".
The overland flow model developed can be further applied to natural rainfall conditions by treating excess rainfall intensity as constant over a small time interval.
Furthermore the basic intention is to design a general and integrated method that is not just able to analyse a certain single load case for a small time interval, but to generate representative PSD and CPSD spectra replacing extensive measured loads in time domain without losing the necessary accuracy for the fatigue load results.
Thus, the system has a unique optimal solution for a small time interval.
It has been proved that the density will be away from vacuum at least in a small time interval provided the initial density is positive.
Consider a (small) time interval of δt > 0, during which a data volume of δb is transferred (i.e., if the full bandwidth is used, δb = Mδt).
There exist already some works which show that the correlation should not be constant and even changes over a small time interval as the volatility, see e.g. [5].
For the force-time history of large trucks (LTs), sudden peaks and variations have compelled the use of a smaller time interval for a stable analysis.
An earlier version, DIFI-2015a, was built from a satellite dataset covering a smaller time interval and using a less recent mantle conductivity model; this version is available as version 0101 from the Swarm data access Web site at https://earth.esa.int/web/guest/swarm/data-access.
If we assume that the initial density and temperature are strictly positive and that the initial data are sufficiently smooth spherically symmetric functions then our problem has a generalized solution for a sufficiently small time interval.
Since the two MPGs in a diffusion-weighted sequence (Fig. 1) are applied within a very small time interval (in the order of 50 ms), additional respiratory motion can indeed be regarded as coherent motion.
