The phrase "a density of less" is not correct in standard written English.
It is typically used in contexts discussing measurements or comparisons of density, but it should be followed by a specific value or unit for clarity.
Example: "The material has a density of less than 1 gram per cubic centimeter."
Alternatives: "a density below" or "a density lower than".
Sakha (Yakutia)—a minority republic that, with an area of about 1.2 million square miles (3.1 million square km) and about one million inhabitants, has a density of less than one person per square mile is typical of this zone.
In all, nearly 100 hotel rooms and about 200 residences are planned to be built, but more than half of the island has been set aside as a nature preserve, and upon completion it is planned to have a density of less than one unit per acre.
Remote rural areas with a density of less than 1 person per square kilometre account for about 14 percent of the rural population.
Except for these concentrated YO-PRO-1 positive areas, YO-PRO-1 positive cells were sparsely located with a density of less than 0.5% of total cells, similar to that seen with cultured rabbit retina [1].
at a density of less than 5,000 cells/well.
After all structures with a density of less than 600 HU (Fig. 1) were excluded electronically, the volume of the remaining calcified plaques was automatically measured [ 22].
Devon is a largely rural county with a population density of less than a third that of England, and half that of the UK [ 32].
For example, some 90% of countries in Africa and South-east Asia are characterized with a density of physicians of less than 50 per 100,000 inhabitants, and about 50% of countries have a similar density of nurses and midwives.
The rest of Brazil, i.e., the Amazon and the mountain regions, offers a lot more space with a population density of less than 5 residents per square kilometre in some cases.
OSHPD classifies hospital setting using geographic units from the California Medical Service Study Area (MSSA): "urban" has at least 75,000 people and is no smaller than five square miles; "rural" has a population density of less than 250 persons per square mile; and "frontier" has a population density of less than 11 persons per square mile.
One reason for the lack of dissent may be that there just aren't that many people in North Dakota — the state has a population density of less than 10 per square mile; Pennsylvania has 284, New York 411 — and the people who are there appear to have weighed the benefits against the costs.
