Write SQL query to solve given problem: Give the number of papers that were published on "IEEE Transactions on Nuclear Science" in 1999.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T2.Id) FROM Journal AS T1 INNER JOIN Paper AS T2 ON T1.Id = T2.JournalId WHERE T1.FullName = 'IEEE Transactions on Nuclear Science' AND T2.Year = 1999