Guidelines called “Knigge” tell us how to act in society in different situations. What is the origin of these “Knigge” guidelines?

And then I found this article about a German writer called Adolph Freiherr Knigge. He is best remembered for his book Über den Umgang mit Menschen (On Human Relations). Well, this book was not at all about good manners in the first place. Mistakenly, Knigge’s work was misinterpreted and is only known today as guidelines for good manners.

Chili peppers contain an alcaloid which is named capsaicin. This compound belongs to the capsaicinoids and is also the primary ingredient in pepper spray. When it comes in contact with mucous membranes, it gives you a burning sensation. Interestingly, it does not bind to taste receptors but to pain receptors in the mouth and throat.

And why is water not effective to clear this burning sensation? Capsaicin is not soluble in water.

A trigger is a small function stored inside your database that gets triggered on a event in your database. Like, the moment you add or update a row in your table.

For versioning we need 2 things:

- a few extra fields in your table
- a copy of the table structure of the table you want versioning turned on

First, let’s define 2 extra fields:

- enuVersionStatus (ENUM) = ‘INSERT’, ‘UPDATE’, ‘DELETE’
- tsVersionStatus (timestamp) = current_timestamp & on update current_timestamp

enuVersionStatus is defined as a enumerable field that holds the state of the data
tsVersionStatus is defined as a timestamp and holds the timestamp when the data has been edited

Now we copy the entire structure of our table to a log, or history table. Let’s just append a “_log” to this table and remove any indexes or auto_increment statements. And lastly we create a new trigger:

DELIMITER $$
CREATE TRIGGER myTable_Trigger
BEFORE UPDATE ON myTable
FOR EACH ROW
BEGIN
INSERT INTO myTable_log (SELECT * FROM myTable WHERE id = OLD.id);
END$$

What the trigger does is very simple. Just before doing any update on the table, the “old” entry is being written into the log table. The data in myTable holds the live data and the myTable_log holds all the old entries.

Impress yourself

This picture was made last year in Hurghada (Egypt). Enjoy the impressive colors of the Red Sea

Happy New Year 2010 to all of you!

May all your dreams come true

May this Christmas be bright and cheerful and may the New Year begin on a prosperous note!

We drove down to Zeltweg (Steiermark) to see the Redbull Airpower event… was very impressive.

www.airpower.at

A new HPV vaccine is currently under study at the AKH Vienna.

Well, what is the difference between this new vaccine and the “old” one?

The human papillomavirus vaccine GARDASIL® which is currently on the market is quadrivalent. This means that it prevents the infection of 4 different types of human papillomaviruses. The protection is directed against two types (HPV-16 and HPV-18) which can cause cervical cancer, and two other types (HPV-6 and HPV-11) which are responsible for the formation of genital warts.

The new HPV vaccine under study is a nine-valent vaccine. It consists, as the previous one, of hollow virus-like particles assembled from recombinant HPV coat proteins. The nine-valent vaccine is meant to protect against 5 additional HPV types. In this study, the new vaccine is compared to the quadrivalent one.