The phrase "are often laborious" is correct and usable in written English.
It can be used to describe tasks or processes that require a lot of effort and time, often implying they are tedious or difficult.
Example: "The research process and data analysis are often laborious, requiring meticulous attention to detail."
Alternatives: "can be quite tedious" or "tend to be cumbersome."
These types of analyses are often laborious, non-intuitive, and non-graphical.
However, AMPs are currently prepared using processes which are often laborious, expensive and of low-yield, thus hindering their research and application.
The simple sample preparation, short measurement times, easy preparation of reference spectra, and low costs per sample are important advantages of MALDI-TOF MS, as compared to specific, DNA-based assays that are often laborious to establish and usually require costly reagents (Table 1) [12]12].
These methods provide much more information on viral epitopes, although they are often laborious.
The original SNP mapping methods are often laborious and expensive because they require multiple steps including restriction digests and size separation.
These methods are often laborious and time-consuming, which usually take hours or even days to provide results.
But as any scientist will tell you, the daily grind of research is often laborious and repetitive and regularly punctuated by failure — either through error or miscalculation, or when our cherished theories cannot withstand the pitiless exactitude of experiment.
Some of the meetings took several days to set up, with Benitez and the others having neither cars nor phones, and the talks were often laborious, with the need not only to translate every statement but on occasion to resort to first principles, such as explaining to the chiefs the white men's maps of the place they called home.
This process is often laborious and, when performed manually, cannot ensure system's repeatability.
