The phrase "an approximate half of" is correct and usable in written English.
It can be used when you want to express an estimation of a quantity that is around 50% of a whole.
Example: "In the survey, an approximate half of the participants reported feeling satisfied with the service."
Alternatives: "about half of" or "roughly half of".
Studies in other teleosts have shown that waterborne fluoxetine enters the brain and has an approximate half life of nine and three days in the fish and water containing fish, respectively [ 46- 48].
Likewise, when I was a child, the existence of planets beyond our solar system was theorized but unproven -- now we understand there to be a staggering number of them, including an approximate half billion in the so-called "Goldilocks zone" where conditions are such that water might exist on a planet's surface.
The 2004 programme saw the number of research contracts reduced by an approximate half.
The disulfide cleavage rate (k4) of a folate-DA conjugate was evaluated in a cell culture [ 14], giving an approximate half-time of 6 h and thus a release rate of ln(2)/6 = 0.12 h−1.
In mice and rats, a once-daily injection of liraglutide, a GLP-1 receptor agonist that has an approximate half-life of 13 h, leads to permanently elevated circulating drug concentrations (32, 33) and increased rate of C-cell abnormalities in both mice and rats, with some animals developing C-cell carcinomas, especially among male rats (6).
As evidenced by thin-layer chromatography, BD2was hydrolyzed under acidic conditions (pH 5.0) with an approximate half-life of 3 h at 37 degrees C, while BD1 remained stable.
This could explain the earlier occurrence of stabilisation of the erythrocytic FA profile in cats fed the MFn-3 diet and means that about 12 weeks are necessary to achieve erythrocytic FA stabilisation, which is consistent with an approximate half-live of 50 days for red blood cells.
Some of the smaller countries of western Europe (such as the Netherlands) have export and import totals that approximate half of their GDPs.
Approximate half of the cys-mutated rmCRP in the starting inclusion body sample was found to directly solubilize using the method described here, and half required a brief exposure to high pHs to achieve solubilization.
For time efficiency, we want to make x* and t* approximate half of n and t as nearly as possible.
