Text: the visits which were most valuable to his research were those to gottingen, leipzig and particularly to copenhagen where he worked in niels bohr 's institute for theoretical physics :

Correct capitalization: The visits which were most valuable to his research were those to Gottingen, Leipzig and particularly to Copenhagen where he worked in Niels Bohr 's Institute for Theoretical Physics :

Text: afgang47: 25-45 year-olds, higher education by status for higher education, age and parents income level (discontinued)

Correct capitalization: AFGANG47: 25-45 year-olds, higher education by status for higher education, age and parents income level (DISCONTINUED)

Text: a confirmation will be sent to the participant within 1 week after registration.

Correct capitalization: A confirmation will be sent to the participant within 1 week after registration.

Text: be gracious to me in the last moment.

Correct capitalization:
Be gracious to me in the last moment.