function sq7_extra_fields_members_directory() {

    $location = bp_get_member_profile_data('field=Location');
    $specialization = bp_get_member_profile_data('field=Specialization');

    if ($specialization || $location) {
        echo '<div class="mdetcenter">'. 'Location : ' . $location . '</div>';
        echo '<div class="mdetcenter">'. 'Specialization : ' . $specialization . '</div>';
    }

}
add_action('bp_directory_members_item', 'sq7_extra_fields_members_directory');