The phrase "are needed for good" is correct and usable in written English.
It can be used when discussing the necessity of something for achieving a positive outcome or benefit.
Example: "Healthy relationships are needed for good mental well-being."
Alternatives: "are essential for well-being" or "are required for positive outcomes."
High spatial and energy resolutions and sensitivity are needed for good lesion detectability.
After implantation, accurate PTV localization, catheter reconstruction and optimization of dose distribution are needed for good PTV coverage and dose conformity.
Low humidity and cold are needed for good artificial-snow production, he said, and the absence of these largely unpredictable conditions can mean the difference between having one or all 14 ski slopes open.
I started with two five- to six-foot-tall high-bush cultivars -- Bluecrop and Jersey -- because two varieties are needed for good pollination and both are suitable for my central New Jersey area.
The free energy of each macrostate, G(N nt, N hb ), is calculated using a mean-field approximation [19] by Monte Carlo sampling over frameworks satisfying the two order parameters; as few as 200 samples are needed for good statistics.
They assumed they would be capable when they assumed leadership, and they may not have realized what skills and knowledge are needed for good leadership when they decided to expand their businesses.
We are always told a balanced diet with plenty of nutritious fresh produce is needed for good health.
Cruz said he would "listen to the expert judgment of the generals and admirals" on the current situation and that military policy should follow what is needed for "good order and discipline" and not social issues.
Hence close proximity of the microorganisms to the TiO2 NPs is needed for good bactericidal activity.
