This is the 14174th most frequent Russian word.
опубликована
"Published."
The word 'опубликована' is used here in the past passive tense to indicate that the article was published and the act was completed.
Статья была опубликована вчера.
The article was published yesterday.
Here, 'опубликована' is used in the perfect passive form to highlight the result of the publishing action, emphasizing the newness of the book.
Опубликована новая книга известного автора.
A new book by a famous author has been published.
In this instance, 'опубликована' functions in the present passive form, indicating the state of the information being available for access.