The Hellenic Navy (HN) (Greek: Πολεμικό Ναυτικό, Polemikó Naftikó, abbreviated ΠΝ) is the naval force of Greece, part of the Greek Armed Forces. The modern Greek navy has its roots in the naval forces of various Aegean Islands, which fought in the Greek War of Independence. During the periods of monarchy (1833–1924 and 1936–1973) it was known as the Royal Navy (Βασιλικόν Ναυτικόν, Vasilikón Naftikón, abbreviated ΒΝ).The total displacement of all the navy's vessels is approximately 150,000 tons.The motto of the Hellenic Navy is "Μέγα το της Θαλάσσης Κράτος" from Thucydides' account of Pericles' oration on the eve of the Peloponnesian War. This has been roughly translated as "Great is the country that controls the sea". The Hellenic Navy's emblem consists of an anchor in front of a crossed Christian cross and trident, with the cross symbolizing Greek Orthodoxy, and the trident symbolizing Poseidon, the god of the sea in Greek mythology. Pericles' words are written across the top of the emblem. "The navy, as it represents a necessary weapon for Greece, should only be created for war and aim to victory."...............The Hellenic Merchant Marine refers to the Merchant Marine of Greece, engaged in commerce and transportation of goods and services universally. It consists of the merchant vessels owned by Greek civilians, flying either the Greek flag or a flag of convenience. Greece is a maritime nation by tradition, as shipping is arguably the oldest form of occupation of the Greeks and a key element of Greek economic activity since the ancient times. Nowadays, Greece has the largest merchant fleet in the world, which is the second largest contributor to the national economy after tourism and forms the backbone of world shipping. The Greek fleet flies a variety of flags, however some Greek shipowners gradually return to Greece following the changes to the legislative framework governing their operations and the improvement of infrastructure.

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This is a bilingual blog in English and / or Greek and you can translate any post to any language by pressing on the appropriate flag....Note that there is provided below a scrolling text with the 30 recent posts...Αυτό είναι ένα δίγλωσσο blog στα Αγγλικά η/και στα Ελληνικά και μπορείτε να μεταφράσετε οποιοδήποτε ποστ σε οποιαδήποτε γλώσσα κάνοντας κλικ στη σχετική σημαία. Σημειωτέον ότι παρακάτω παρέχεται και ένα κινούμενο κείμενο με τα 30 πρόσφατα ποστς....This is a bilingual blog in English and / or Greek and you can translate any post to any language by pressing on the appropriate flag....Note that there is provided below a scrolling text with the 30 recent posts...Αυτό είναι ένα δίγλωσσο blog στα Αγγλικά η/και στα Ελληνικά και μπορείτε να μεταφράσετε οποιοδήποτε ποστ σε οποιαδήποτε γλώσσα κάνοντας κλικ στη σχετική σημαία. Σημειωτέον ότι παρακάτω παρέχεται και ένα κινούμενο κείμενο με τα 30 πρόσφατα ποστς.........

Tuesday, February 21, 2012

Important Research of Greek scientist ..... ... [2728]

Research of Greek scientist in the Top 10 of 2011.

From "New Horizons" / / GoodNews / / Yesterday | 04:23

In the chemical industry opens the research group of Greek Tsapatsi Michael, a professor at the University of Minnesota, on the growth of zeolites.
The reputable scientific Science ranked among the top 10 scientific breakthroughs of 2011!

Development of new zeolites H films are expected to find application in a wide range of materials used by the nuclear industry by the detergents.

What are zeolites?

Natural zeolites are porous mineral used in a variety of applications due to its ability to absorb their resources cations -p.ch. sodium, potassium and calcium. These positive ions are absorbed from one resource, but not held in this position with strong forces, and can thus be replaced by other ions in an aqueous solution.

This allows zeolites to act as catalysts of chemical reactions to remove salts from hard water, to separate molecules according to their size, or even to isolate oxygen for medical use.

Widely used as softeners in household detergents, but also to absorb odors in cat litter!

But what is it that managed to bring the research group of Dr. Tsapatsi Department of Chemical Engineering and Materials Science at the University of Minnesota?

The Greek professor developed porous membranes with a thickness of about 200 just nanometers (billionths of a meter), which serve as zeolites with many new candidate applications. The zeolite leaves Tsapatsi created with a variety of techniques, such as scaling, deposition on natural substrates and secondary growth.

The development of thinner membranes zeolites custom "opens new horizons in the chemical industry processes more efficient and faster, at lower cost, energy saving and reduced environmental impact," he said in a statement Research Center "Demokritos".

Professor Tsapatsis collaborating for 5 years with a "Demokritos" for research on zeolithikes films with the participation of Dr. George Karanikolos, scientific collaborator "Marie Curie" Physical Chemistry Institute.

Biography

Dr. Tsapatsis was born in Athens in 1965 and studied Chemical Engineering at the University of Patras. He completed his PhD in 1991 in the famous Caltech (California Institute of Technology). He is a professor at the University of Minnesota since 2003.

Among the honors received are Stratis Sotirchos Prize awarded to him in 2005 the Foundation for Research and Technology for innovative and creative activities.

The list of the achievements of the year and 9 "substitute" Each year achievements of the leading scientific organization in the U.S., the American Association for the Advancement of Science (AAAS), which issues and the authoritative journal Science

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