MotherNature.com states that weak nails can mean there are problems elsewhere in the body. Psoriasis, a condition of the skin that can lead to itching, can cause weak nails. Hyperthyrodism, which is an overactive thyroid gland, can also cause weakness. Anemia may also contribute to weak nails. In addition, it can signal a calcium deficiency.
The four quarters that make up the year are: January, February and March (Q1); April, May and June (Q2); July, August and September (Q3); and October, November and December (Q4). A quarter is often shown with its relevant year, as in Q1 2015 or Q1/15, which represents the first quarter of the year 2015.
A quarter is an academic term of about 12 weeks. An academic year divided into quarters allocates the same amount of time to summer term as to the autumn, winter, and spring terms. The terms quadmester and quadrimester are rarely used to describe a three- or four-term system. [citation needed]