The phrase "has been further modified" is correct and usable in written English.
You can use it when you are describing something that has been changed or updated in some way. For example: "The policy has been further modified to ensure greater access to resources for underprivileged communities."
Recently, by using the idea of piecewise approximation, the simple Taylor-series expansion method has been further modified in [28].
In the recent decades rather than using a single value, non-deposition design concept has been further modified to develop self-cleansing models based on higher number of parameters considering flow, fluid, sediment and channel characteristics.
The Curie Weiss type law for relaxors has been further modified to incorporate these two effects to accurately predict the DPT behavior of thin film and bulk relaxor ferroelectrics.
The original biomarker classification has been further modified into a translational biomarker scheme that is used as a communication tool for drug hunting teams to guide designing translational and early clinical development plans as part of an integrated model-informed drug discovery and development strategy.
This dialyzabile iron method described above has been further modified to include measurement of the uptake of the dialyzable iron by cells grown in culture [132].
Experimental induction of a focal ischemia in rats by intraluminal suture-occlusion of the middle cerebral artery was first developed by Koizumi et al. [2] and has been further modified by Longa et al. [3] and by Nagasawa and Kogure [4].
Vegetation patterns have been further modified through overgrazing, forest clearance, reclamation and drainage of marshlands, and the introduction of exotic plant species.
Some of the methods included in the comparative analysis in [8] have been further modified and for one of them, a more efficient implementation has been proposed.
The bio-based PUs have been further modified by thiol-ene/yne coupling of thioglycerol into unsaturation to obtain a series of PUs with enhanced hydrophilicity.
To this end, UV-PUDs based on acrylated soy-polyol have been further modified by siloxane and perfluoro compounds and their films with varying cross-link density have been investigated.
In order to recruit endogenous cells for enhanced tissue regeneration and repair, growth factors, such as TGF-β, fibroblast growth factor (FGF), VEGF, epidermal growth factor (EGF), and platelet derived growth factor (PDGF), have been further modified to be controlled release from biomaterials (Metcalfe and Ferguson, 2007).
