The phrase "a time when subjects" is correct and usable in written English.
It can be used when discussing a specific period or context in which certain topics or themes were relevant or prevalent.
Example: "There was a time when subjects like philosophy and ethics were central to our education system."
Alternatives: "an era in which topics" or "a period when themes".
Like many people who benefited from a more open era of sex education, I am appalled by the success of social conservatives in keeping science away from sexual behavior, even at a time when subjects like human resources and reality television are attracting academic attention.
The use of glucagon in a dual-hormonal system may hold its greatest potential in mitigating the risk of hypoglycemia during and after exercise, a time when subjects with diabetes are at particularly high risk (9).
She also admitted to taking the class A drug again with a friend in the summer of 2010 at a time when subject to what she described as acts of "intimate terrorism" by her second husband Charles Saatchi.
The 40 65 ms additional processing time when subjects are looking for birds or dogs prove sufficient to avoid making false alarms on non-targets that do not contain animals.
Periods of time when subjects were not taking any psychoactive medicines (i.e. 0 medicine and 0 DDD/day) were used as the reference period.
The evaluation of SDNN and TP was also limited to nighttime, which was defined as the time when subjects indicated in the diary that they where sleeping (see Felber et al. 2008; Probst-Hensch et al. 2008).
Nighttime, during which HRV is less likely to be influenced by short-term disturbances, was defined as the time when subjects indicated in the diary that they where sleeping.
The model is based upon the general observation that the shoreline tends to approach an equilibrium position exponentially with time when subjected to constant forcing.
However, it is often overlooked that the sound reduction performance of soft resilient materials is susceptible to being degraded over time when subjected to a long-term load.
The novel is renowned for its frank portrayal of bisexuality and interracial relations, published in a time when these subjects were taboo.
AT a time when cookbook subjects have never been more highly specific -- a 494-page book on eggs will be hitting the shelves in May -- it is difficult to get away with writing a cookbook of eclectic recipes.
