The phrase "a significant progress was achieved" is not correct in standard written English.
The correct form should be "significant progress was achieved" without the article "a" since "progress" is an uncountable noun.
Example: "After months of hard work, significant progress was achieved in the project."
Alternatives: "substantial progress was made" or "notable progress was accomplished."
Significant progress was achieved in enhancing the detector response, hence the sensitivity for revealing illicit material.
Significant progress was achieved in the characterization of TH17 cell differentiation and associated cytokines in the setting of inflammatory disorders, HIV infection, and immunodysregulation disorders.
Significant progress was achieved when the Ramberg Osgood model was developed, however, there is consensus among researchers that this model is only accurate up to the 0.2% proof stress.
Significant progress was achieved in recognizing the importance of solar forcing on climate by bringing together the following two international communities studying STP and stratospheric processes and their role in climate (SPARC), that is, High-Energy Particle Precipitation in the Atmosphere (HEPPA) and Solar Influences for SPARC (SOLARIS).
Significant progress was achieved in the four years following our survey with respect to human resources.
In Bosnia and Herzegovina, at policy level, significant progress was achieved, but children with disabilities still face significant obstacles in accessing quality services on an everyday basis", said Suvad Zahirović, Director of the Information Centre for Persons with Disabilities "Lotos" from Tuzla.
The work summarized above illustrates that significant progress was achieved in understanding the role of TCS in C. glutamicum since the genome sequence was published in 2003 and allowed the in silico identification of these signal transduction systems.
During this time, significant noise is added to the system while no significant progress is achieved.
Significant progress is achieved in our understanding of L1 biology and the effects this retrotransposon can exert.
Despite significant progresses were achieved in tissue engineering over the last 20 years, a number of unsolved problems still remain.
