Collecting thoughts, giving them meaning and having fun while at it

Έτος: 2010 (Σελίδα 6 από 12)

Rockbox really rocks!!

Screenshot of Rockbox theme for SanDisk Sansa Fuze
Image via Wikipedia

I own a Sansa Fuze (v.1) player, which is a great little device and really good value for money. However, I used to find the interface a bit limiting, having previously used an iPod for a few months (which I ditched for limited media support)…. Well, limitations are no more!

From Rockbox.org:

What is Rockbox? Why should I use it?

Rockbox is an open source firmware replacement for a growing number of digital audio players. It has been in development since 2001 and receives new features, tweaks and fixes every day to provide you with the best possible music listening experience. Rockbox aims to be considerably more functional and efficient than your device's stock firmware while remaining easy to use and customizable. It is a goal to not only offer a wide range of functionality, but where possible make sure that this functionality is presented in a consistent manner that is easy to learn and use. It is written by users, for users.
Another top priority of Rockbox is audio playback quality. Rockbox, for most models, includes a wider range of sound settings than that device's original firmware. A lot of work has been put into making Rockbox sound the best it can, and improvements are constantly being made. All models have access to a large number of plugins, including many games, applications, and graphical demos.
You can load different configurations quickly for different purposes (e.g. a large font for in your car, different sound settings for at home). You can even customize your While Playing Screen to display only and exactly what you want to see when your music is playing. In addition, Rockbox features a wide range of languages, and all supported models also have the ability to talk to you – menus can be voiced and filenames spelled out or spoken.

And here's a very comprehensive feature comparison table!

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Αναφορά για τις παραλίες: Ποιες είναι καθαρές, ποιες όχι και τόσο…

Το ΠΑΚΟΕ έχει δημοσιεύσει μια πολύ ενδιαφέρουσα και χρήσιμη ανάλυση όπου αναφέρεται η ποιότητα της θάλασσας σε διάφορες παραλίες! Επιπλέον, η αναφορά αυτή περιέχει και κάποιες χρήσιμες γενικές οδηγίες:

Ο ΔΕΚΑΛΟΓΟΣ ΤΟΥ ΛΟΥΟΜΕΝΟΥ

 

α. Όταν η θάλασσα πρασινίζει, τότε είναι γεμάτη σάπια φύκια και πλαγκτόν.

β. Όταν η επιφάνειά της ιριδίζει, τότε είναι γεμάτη πετρέλαιο, πίσσες, λάδια, απόβλητα βόθρων.

γ. Όταν οι ακτές είναι γεμάτες σκουπίδια υπάρχει η πιθανότητα και η ίδια η θάλασσα να είναι μολυσμένη.

 

δ. Τα ακάθαρτα νερά είναι πάντα εστίες μικροβίων.

ε. Στο βυθό υπάρχουν μόλυβδος και υδράργυρος που προκαλούν σοβαρές βλάβες στην υγεία.

Εφόσον ισχύουν οι παραπάνω συνθήκες, θα πρέπει να λαμβάνονται ορισμένα στοιχειώδη μέτρα:

1.Να μην κολυμπάτε σε νερά που το χρώμα τους είναι βαθύ πράσινο.

2. Να μην μπαίνετε σε θάλασσα που έχει πετρέλαιο, λάδια, απόβλητα βόθρων. Οι βρωμιές αυτές προκαλούν καρκίνο της μήτρας, νεοπλασίες και χρόνιες δερματίτιδες.

3.Να μην ρυπαίνετε και να καθαρίζετε τις παραλίες από τα σκουπίδια.

4. Να μην αναδεύετε τη θάλασσα όταν υπάρχει λάσπη στο βυθό. Η λάσπη της, προδίδει την ύπαρξη μόλυβδου και υδραργύρου, που με την ανατάραξη του βυθού μπορεί να μπουν στον οργανισμό μας από το στόμα και τους πόρους του σώματος.

 

5. Να μην εκτελείτε τις σωματικές σας ανάγκες μέσα στη θάλασσα.

6. Πριν κολυμπήσετε, αλείψτε τις πιο εμφανείς περιοχές του σώματός σας με αγνό ελαιόλαδο.

 

7.Σε περίπτωση που σας τσιμπήσει τσούχτρα αν δεν έχετε μαζί σας υγρή αμμωνία να χρησιμοποιήσετε άμμο καθαρή ή φύκια της θάλασσας, τοποθετώντας επί δεκάλεπτο ένα στρώμα στο σημείο του τσιμπήματος.

 

8.Στην περίπτωση που θέλετε να απαλλαγείτε από τις τσούχτρες, απασχοληθείτε με το να τις ψαρεύετε. Το ψάρεμά τους, όμως, θέλει προσοχή. Προσπαθήστε με το εσωτερικό της παλάμης σας να τις μαζέψετε μαζί με το νερό.

9. Οι καλύτερες ώρες για το άθλημα της κολύμβησης είναι οι πρωινές και οι απογευματινές, επειδή ο οργανισμός δεν είναι απασχολημένος τότε με την πέψη και μπορεί να αφιερωθεί πιο άνετα σε μια κουραστική προσπάθεια.

10. Όταν ο καιρός είναι βόρειος, βορειοανατολικός στο Σαρωνικό, να κολυμπάτε μόνο από το Σούνιο μέχρι τη Βουλιαγμένη, ενώ όταν είναι βορειοδυτικός ή νότιος, τότε οι βόρειες περιοχές από το Δασκαλειό μέχρι τον Ωρωπό είναι απαλλαγμένες από τσούχτρες

EU makes sure Fusion Energy Plant’s construction continues…

iter-head-590x330

News posted on BBC about ITER (Latin for “The Way”, but also “International Thermonuclear Experimental Reactor”):

EU member states agree on Iter funding shortfall

I’ll elaborate on this issue… it is my personal opinion that this project is of crucial importance to the future of mankind… after all, abundance of energy is a vital ingredient of a Post-Scarcity Economy (from WikiPedia):

Post scarcity or post-scarcity describes a hypothetical form of economy or society, often explored in science fiction, in which things such as goods, services and information are free, or practically free. This would be due to an abundance of fundamental resources (matter, energy and intelligence), in conjunction with sophisticated automated systems capable of converting raw materials into finished goods, allowing manufacturing to be as easy as duplicating software.

What would thermonuclear fusion power plants run on? Well, two Hydrogen isotopes, Deuterium and Tritium. Deuterium comes from plain sea water (therefore inexhaustible), while Tritium is produced within the reaction itself, by interaction with Lithium (a very common light metal). Future generations may run solely on Deuterium.

HowStuffWorks:

With current technology, we can only achieve the temperatures and pressures necessary to make deuterium-tritium fusion possible. Deuterium-deuterium fusion requires higher temperatures that may be possible in the future. Ultimately, deuterium-deuterium fusion will be better because it is easier to extract deuterium from seawater than to make tritium from lithium. Also, deuterium is not radioactive, and deuterium-deuterium reactions will yield more energy.

ITER.org:

In fact, a fusion reaction is about four million times more energetic than a chemical reaction such as the burning of coal, oil or gas. While a 1 000 MW coal-fired power plant requires 2.7 million tons of coal per year, a fusion plant of the kind envisioned for the second half of this century will only require 250 kilos of fuel per year, half of it Deuterium, half of it Tritium.

Deuterium can be distilled from all forms of water. It is a widely available, harmless, and virtually inexhaustible resource. In every litre of seawater, for example, there are 33 milligrams of Deuterium. Deuterium is routinely produced for scientific and industrial applications.

Fusion energy is also eco-friendly and safe (ITER):

In addition, fusion emits no pollution or greenhouse gases. Its major by-product is Helium: an inert, non-toxic gas. There is no possibility of a ‘run-away’ reaction because the conditions for fusion are precise – any alteration in these conditions and the plasma cools within seconds and the reaction stops. Fusion has the capacity to furnish large-scale quantities of energy, with a low burden of waste for future generations.

By the way, has anyone connected the dots with U.S.A.’s strategy?

On one hand, they continuously set obstacles in planning and funding the ITER (which is in the making since 1985). The first time, just when all the specs were finally in place, after the successful completion of the European JET project, Americans simply pulled the plug, by abandoning the project! It took the Europeans 20 years to come up with the needed funds, that U.S.A. had withdrawn. And in 2003, just as soon as EU did come up with the money (which meant that they could go ahead and develop the technology all by themselves), U.S.A. rejoined the project! But it did not stop there; for example, in 2008 they zeroed their participation on the budget on ITER (letter of the Under Secretary of Energy to the Director General of ITER), and so on, and so forth. This way, any development of ITER and research advancement towards materialization of thermonuclear fusion energy, has been “postponed” for well over two decades.

On the other hand, during the same period of time, U.S.A. has been busy, trying by all means to secure for themselves complete control over access to the world’s largest remaining oil reserves and distribution channels… Get the picture of the “power game”? When a foreseeable expiration date arrives for oil reserves, and fusion energy is not yet available, who’s gonna be in control?

Anyway, today’s news was the the EU is going to contribute an extra 1.4bn euros (USD 1.8bn) this year, just to make sure that the project keeps going:

Additional funds needed to construct the ITER fusion reactor will have to come from within the EU’s budget, member states have said. The French-based machine will prove the concept of harvesting energy from the fusion of hydrogen nuclei – the same process at the heart of the Sun. Iter has seen its baseline price tag rise dramatically since a consortium of nations green lit the project in 2006. The extra 1.4bn euros will cover a shortfall in building costs in 2012-13.

Update, July 2015

The Chinese seem to be getting tired of ITER postponements. They are going to invest billions into building their own version, which is supposedly going to be even bigger than ITER and it’s estimated to be ready by 2030.

China spends big on nuclear fusion as French plan falls behind

 

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