The phrase "allows a proportion" is correct and usable in written English.
It can be used when discussing the capacity or ability of something to accommodate or permit a certain fraction or percentage of something else.
Example: "The new policy allows a proportion of employees to work remotely, enhancing work-life balance."
Alternatives: "permits a fraction" or "enables a percentage".
The balloon is partially deflated, allowing a proportion of aortic flow distal to the balloon.
It is suggested that such a difference can be related to the ability of low valency cations to occupy interstitial sites, allowing a proportion of the noble elements to dissolve in alumina through the self-compensating mode.
The online journal era, dating from around 1996 onwards, has allowed a proportion of the visual and numerical data components to increasingly separate into what is often referred to as supporting information (SI or ESI for electronic forms) or other synonyms.
Clade models allow a proportion of sites to undergo divergent selection pressures in two or more clades defined a priori.
A first LRT favored model M8 (Yang et al. 2000), a model allowing a proportion of sites to evolve under positive selection, for 7 of the 13 genes.
The idea is essentially to allow a proportion p21 of non-enriched probes in an enriched region and a proportion p12 of enriched probes in a non-enriched region.
Branch models allow dN/dS to vary across branches in the phylogeny but not across sites [ 32, 33], whereas clade models allow a proportion of sites to undergo divergent selection pressures in two or more clades defined a priori[ 34].
Our modelling attempted to account for sexually transmitted HIV among PWID by allowing a proportion of PWID to be already HIV infected at their initiation to injecting (8%), and by assuming a continued rate of sexual HIV transmission among PWID.
We assumed a general time reversible model of DNA substitution allowing a proportion of invariant sites and gamma distributed variation in substitution rate among sites (GTR + I + G) for all four DNA fragments.
A newer treatment paradigm has been proposed for highly selected patients with unresectable liver-only metastases in such patients, primary chemotherapy may allow a proportion, in whom adequate downsizing is achieved, to undergo subsequent resection (Leichman, 2007).
