Sentence examples for a source is necessary. from inspiring English sources

Note that technically the presence of a source is necessary in order to have a steady state at all, since its absence would require an unbounded distribution.

On this internalist conception of justification, a special kind of access to a source is necessary for the source to provide justification, and consciousness stands out for allowing this sort of access (see e.g. Smithies 2012b).

Mike Pence (R-Ind). and Rick Boucher (D-Va). -- would compel testimony from a journalist only when the identity of a source is necessary to prevent imminent and actual harm to national security.

We demonstrated that a bi-dimensional sampling of Fourier space of the input source is necessary to improve imaging capability.

Because the translucent alabaster allows light to pass through it, no outside light source is necessary.

Used specifically for GSR appointments > 25% where separation of benefits (fee remission) from the salary source is necessary.

In still another arena, experts are split to some degree on whether a centralized national health system, in which everyone's comprehensive health records are accessible from one source, is necessary for robust surveillance.

Several organic and inorganic substances can be used as nitrogen source for heterotrophic nitrification, and organic carbon source is necessary for growth of the microorganisms and for nitrification of inorganic N sources (Focht and Verstraete 1977).

Such a powerful source was necessary because the inefficient crystal optics used to focus the x-rays onto the sample could only cope with a narrow spectrum of wavelengths.

Therefore, the maintenance of photosynthesis (including the content of photosynthetic pigments) as an energy source was necessary for the survival of B pendula in extreme conditions.

It is shown that the correction of numerical material parameters and the slow switching-on of source are necessary to ensure stable and convergent single-frequency simulations.