Gana un Nexus S con Andyou

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Posted by admin | Posted in Allgemein | Posted on 18-04-2014

,Fundas Galaxy ace

Hace poco escribimos un articulo hablando de la aplicación Andyou, que os recomiendo que releáis.

En él os contábamos sus funciones básicas y como empezar a darle uso.

Los creadores nos han mandado un email para decirnos que sortean un Nexus S en colaboración con Htcmania,Funda Galaxy S3.

Las condiciones para participar las tenéis en el siguiente post: Concurso Nexus S.

Suerte  a todos los que participen.

 

 



Paradigm shift in organic solar cell research

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Posted by admin | Posted in Allgemein | Posted on 18-04-2014

Nov. 19, 2013 — Organic solar cells have long been touted as lightweight, low-cost alternatives to rigid solar panels made of silicon. Dramatic improvements in the efficiency of organic photovoltaics have been made in recent years, yet the fundamental question of how these devices convert sunlight into electricity is still hotly debated.


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Now a Stanford University research team is weighing in on the controversy. Their findings, published in the Nov. 17 issue of the journal Nature Materials, indicate that the predominant working theory is incorrect, and could steer future efforts to design materials that boost the performance of organic cells.

"We know that organic photovoltaics are very good," said study coauthor Michael McGehee, a professor of materials science and engineering at Stanford. "The question is, why are they so good? The answer is controversial."

A typical organic solar cell consists of two semiconducting layers made of plastic polymers and other flexible materials. The cell generates electricity by absorbing particles of light, or photons.

When the cell absorbs light, a photon knocks out an electron in a polymer atom, leaving behind an empty space,coque galaxy SIII, which scientists refer to as a hole. The electron and the hole immediately form a bonded pair called an exciton. The exciton splits, allowing the electron to move independently to a hole created by another absorbed photon. This continuous movement of electrons from hole to hole produces an electric current.

In the study, the Stanford team addressed a long-standing debate over what causes the exciton to split.

"To generate a current, you have to separate the electron and the hole," said senior author Alberto Salleo, an associate professor of materials science and engineering at Stanford. "That requires two different semiconducting materials. If the electron is attracted to material B more than material A, it drops into material B. In theory, the electron should remain bound to the hole even after it drops.

"The fundamental question that’s been around a long time is, how does this bound state split?"

Some like it hot

One explanation widely accepted by scientists is known as the "hot exciton effect." The idea is that the electron carries extra energy when it drops from material A to material B. That added energy gives the excited ("hot") electron enough velocity to escape from the hole.

But that hypothesis did not stand up to experimental tests, according to the Stanford team.

"In our study, we found that the hot exciton effect does not exist," Salleo said. "We measured optical emissions from the semiconducting materials and found that extra energy is not required to split an exciton."

So what actually causes electron-hole pairs to separate?

"We haven’t really answered that question yet," Salleo said. "We have a few hints. We think that the disordered arrangement of the plastic polymers in the semiconductor might help the electron get away."

In a recent study, Salleo discovered that disorder at the molecular level actually improves the performance of semiconducting polymers in solar cells. By focusing on the inherent disorder of plastic polymers,galaxy s4 i9500, researchers could design new materials that draw electrons away from the solar cell interface where the two semiconducting layers meet, he said.

"In organic solar cells, the interface is always more disordered than the area further away," Salleo explained. "That creates a natural gradient that sucks the electron from the disordered regions into the ordered regions."

Improving energy efficiency

The solar cells used in the experiment have an energy-conversion efficiency of about 9 percent. The Stanford team hopes to improve that performance by designing semiconductors that take advantage of the interplay between order and disorder.

"To make a better organic solar cell, people have been looking for materials that would give you a stronger hot exciton effect," Salleo said. "They should instead try to figure out how the electron gets away without it being hot. This idea is pretty controversial. It’s a fundamental shift in the way people think about photocurrent generation."

Other authors of the paper are Koen Vandewal (lead author), Erik Hoke, William Mateker, Jason Bloking and George Burkhard of Stanford; Steve Albrecht, Marcel Schubert and Dieter Neher of the University of Potsdam; Johannes Widmer and Moritz Riede of the Institute for Applied Photophysics (IAPP); Jessica Douglas and Jean Frechet of the University of California-Berkeley; Aram Amassian of the King Abdullah University of Science and Technology (KAUST); and Alan Sellinger of the Colorado School of Mines and the University of Oxford. Author Kenneth Graham has a joint postdoctoral fellowship with Stanford and KAUST.

Support for the study was provided by the Stanford Center for Advanced Molecular Photovoltaics and the U.S. Department of Energy.

3 zakelijke topfeatures van Windows 8.1

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Posted by admin | Posted in Allgemein | Posted on 17-04-2014

De focus van het publiek richt zich wat betreft Windows 8.1 bijna enkel op de Startknop. Deze komt gewoon terug, net zoals vroeger. (Maar nu is het enkel een schakeling tussen het Startscherm en de Desktop; er is nog steeds geen Startmenu).


Afgezien van dat issue, zijn er veel andere belangrijke veranderingen in Windows 8.1 die het vermelden waard zijn. De meeste vind je terug in de Enterprise-editie, die alleen verkrijgbaar is via Microsofts Software Assurance-programma.

De standaardeditie van Windows 8.1, die vooral op thuispc’s geïnstalleerd zal worden, stelt je niet in staat om de pc te beheren via Group Policy. De Pro-editie ondersteunt deze Active Directory-achtige functionaliteit wel, evenals de Enterprise-versie. Maar Windows 8.1 Enterprise heeft meer kekke features voor IT-beheerders in petto.

1,iPhone 5s hoesjes. Start Screen Control

Deze functie stelt je in staat de look-and-feel van het Startscherm aan te passen, zoals de kleur en de plaatsing van tegels, zodat gebruikers met zakelijke apparatuur altijd met dezelfde omgeving werken. Na het configureren van een layout, kun je met een PowerShell cmdlet deze exporteren naar een XML-bestand die je via Group Policy op pc’s van gebruikers kunt toepassen. Je kunt verschillende configuraties voor verschillende groepen gebruiken en blijven bepalen hoeveel de gebruiker zelf mag aanpassen.

2. Verbeterde ondersteuning voor BYOD

De Windows To Go-functionaliteit maakt het mogelijk om een volledig operationeel Windows 8.1 systeem op een USB-stick te zetten, zodat gebruikers overal dezelfde Windows mee kunnen nemen. Het klopt dat Windows To Go ook al meegeleverd werd, maar Windows 8.1 heeft de feature sterk verbeterd. Er is nu bijvoorbeeld Workplace Join bijgekomen, een tussenlaag voor systemen die toegang tot data nodig hebben maar geen onderdeel uitmaken van het domein. Work Folders scheidt persoonlijke data van zakelijke gegevens en Web Application Proxy is een Windows Server 2012 R2-afhankelijke functie die toegang op afstand tot zakelijke webapps biedt.

3,galaxy note 2 hoesjes. Inladen van eigen applicaties

Soms wil je een Metro-applicatie gebruiken die niet is terug te vinden in de Windows Store, omdat je de applicatie zelf ontwikkeld hebt en deze alleen voor gebruik bij jouw bedrijf bedoeld is. Windows 8.1 stelt je in staat om zulke apps te laden buiten de Windows Store om, via een techniek met de naam ‘sideloading’, die ook wordt gebruikt in Android. Je kunt hiermee Metro apps direct installeren in een image, bijvoorbeeld via de Deployment Image Servicing and Management Tool.

Aan sideloading kleven wel de nodige haken en ogen. De Enterprise-editie bevat licenties voor sideloading en Windows 8.1 Pro en Windows 8.1 RT kunnen sideloaden, maar alleen als je de benodigde sideloading-licenties in bezet hebt. De kosten voor de extra licenties ontmoedigen het gebruik van sideloaden, maar voor grotere bedrijven zal het een uitkomst zijn.

Dubiose Shopbetreiber Verbraucherschtzer kritisieren Ebay

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Posted by admin | Posted in Allgemein | Posted on 17-04-2014

eBay: Verbraucherschtzer sehen gravierende Mngel

Wie der Bundesverband der Verbraucherzentralen in Berlin berichtete, habe man in jedem untersuchten Fall mindestens einen Versto gegen bestehende Vorschriften gefunden. So seien rund 20 Unternehmer als private Verkufer aufgetreten,Samsung S4 Hüllen, die in der Praxis nur schwer haftbar zu machen seien. Auerdem wrden auch hufig Angaben zum Widerrufs- oder Gewhrleistungsrecht vorenthalten. Insgesamt sprach der Verband 71 Abmahnungen aus und leitete 7 Klagen ein. Die Verbraucherschtzer forderten das Auktionshaus auf, fr ein effektives Qualittsmanagement zu sorgen, die Verbraucherrechte zu berwachen und einen Missbrauch unverzglich zu ahnden. eBay muss einen gewerblichen Online-Shop, der sich als Privatverkufer tarnt, unverzglich ausschlieen, forderte Verbandschef Gerd Billen.

Auf Anfrage der Agentur AP erklrte das Unternehmen, es treffe zu, dass auch privat handelnde Nutzer einen Ebay-Shop betreiben knnten. Eine Vorab-Prfung, ob ein Shop-Betreiber privat oder tatschlich gewerblich handeln will, ist bei Ebay nicht mglich, teilte das Auktionshaus mit. Sofern Beschwerden von Dritten eintrfen, Unternehmen wrden als Privatpersonen auftreten, geht eBay diesen Hinweisen grundstzlich nach und fordert solche Nutzer zur Stellungnahme auf. Im Ernstfall wrden auch Manahmen in die Wege
geleitet.

Durchschnittlich 5,3 Verste pro Anbieter
Allein bei Informationspflichten vor Abschluss eines Vertrags zhlten die Verbraucherschtzer nach eigenen Angaben insgesamt 426 Verste, durchschnittlich also 5,3 pro Anbieter. Die vom vzbv eingeleiteten Manahmen zeigten sogar schon Erfolge: Rund 60 Unterlassungserklrungen seien beim Verband eingetroffen, eine sogar aus Hongkong,Samsung Note 3 Hüllen, hie es. Gegen sieben Anbieter, die sich trotz eines Erinnerungsschreibens nicht geuert oder eine Unterlassungserklrung verweigert htten, sei Klage erhoben worden. In bislang vier Urteilen seien die Ansprche des Verbands im vollen
Umfang besttigt worden.

Das Auktionshaus wies aber darauf hin, dass es auch wegen der sich teilweise widersprechenden Rechtsprechung zum Internethandel schwierig sei, einen abmahnsicheren Online-Auftritt zu haben. Der Gesetzgeber sei gefragt, die komplizierte Rechtslage zu vereinfachen.

Welche Probleme als Privatpersonen getarnte Profihndler machen knnen, bekamen die Verbraucherschtzer selbst zu spren: Zwar seien in 11 von 20 Fllen Abmahnungen mglich gewesen. Bei den brigen konnte aber keine verwertbare Adresse ermittelt werden. Leicht auszumalen, dass auch Reklamationen oder ein Widerruf hier ins Leere laufen, sagte Billen.

Fr die Untersuchung nahm der vzbv die 80 Hndler, zumeist PowerSeller oder Betreiber von Premium- oder Top-Shops, von September 2006 an ein Jahr lang unter die Lupe. (AP/ul)

Ratgeber: Schnppchenjagd bei eBay
Ratgeber: Geld verdienen mit eBay

Samsung Galaxy S 4 (Sprint)

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Posted by admin | Posted in Allgemein | Posted on 17-04-2014

Samsung Galaxy S 4 (Sprint) height="245" title="Samsung Galaxy S 4 (Sprint)"/>

view all 6 photos in gallery

MSRP

$249.99

  • Pros

    A blinding number of features. Incredibly fast. Ships with Android 4.2.2. Relatively small for its display size. Spectacular call quality,iPhone 5c case.

  • Cons
    Limited storage on 16GB model. Low-light camera performance could be better.
  • Bottom Line

    The Samsung Galaxy S 4 is the ultimate kitchen-sink Android phone for 2013, with features you’ll still be discovering months after you buy it.



By Sascha Segan

The Samsung Galaxy S 4 is the best smartphone on the market today, and Sprint’s model brings that excellence to the “unlimited everything” carrier. Whether you’re looking for a super-fast Android phone or just a terrific voice phone, the Galaxy S 4 is a top choice, and our Editors’ Choice.

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We reviewed the Galaxy S 4 extensively on T-Mobile, so I'm going to stick to the differences in the Sprint model here. All the Galaxy S 4 units are physically identical except for the carrier logo on the back, and the Sprint unit doesn't even have that. The only sign you're using Sprint here is the carrier's name on the lock screen.

View all 6 photos in gallery

To recap: The Galaxy S 4 looks like a refined Galaxy S III at 5.4 by 2.75 by .31 inches (HWD) and 4.6 ounces. It's still plastic, in white or black, with chrome trim, and a subtly patterned, smooth back. It's almost exactly the same size as the S3, with the new phone's larger 5-inch screen made possible by a smaller bezel.

The phone is practically bubbling over with new features, half of which you'll probably never use and a handful of which will become critical to your life. Some examples: a built-in pedometer and diet tracker, a camera mode which erases photobombers, and the ability to run two apps in different windows on the screen.

Sprint's Galaxy S 4 has the same 1.9Ghz Qualcomm Snapdragon 600 processor as T-Mobile's, but I found that this unit benchmarked slightly faster, possibly because it's running fewer background services like T-Mobile's Wi-Fi calling system. In any case, it's the fastest Android phone I've seen yet.

Sprint strikes a brave pose with its bloatware: much of it is uninstallable. Just pop down to the Application Manager and you can delete some of the preloaded apps, like Sprint Music Plus and Sprint TV and Movies. Unfortunately, some bloatware, including the Lumen Toolbar, Sprint Worldwide (a useless stub with instructions on how to use your phone abroad), and Sprint Zone (which is just a vehicle for various promotions), isn't as easily removed. This is especially important on the storage-poor 16GB Galaxy S 4, which only has 9.2GB free to start with (although you can expand the storage with a microSD card up to a 64GB).

Voice Calling and Network
The Galaxy S 4 is the best voice phone you can buy on Sprint. The call screen has options to toggle noise cancellation and extra volume, and like on the Galaxy S III, you can personalize the call sound profile to your own sense of hearing. I was startled by how sharp, clear, and loud my calls were; noise cancellation was also excellent. This quality is only improved by Sprint's HD Voice system. It only works when you're making calls between two Sprint phones, but it's working on a steadily larger number of phones, including the iPhone 5, Samsung Galaxy S III, HTC One, LG Optimus G, and this device. It even works with a few Boost phones.

The main down side is Sprint's network, but that applies to all Sprint phones. With no LTE near our offices in New York City, I was stuck in a painfully congested Internet slow lane, choking off the capabilities of this monster device. I couldn't even complete my speed tests. Unlimited data doesn't mean anything if you can't get online. Sprint needs to ramp up its LTE rollout pronto. 

Perhaps because of that limited LTE coverage, Sprint's Galaxy S 4 lets you turn off LTE to save battery. Network settings include LTE/CDMA, CDMA only, and GSM/UMTS world mode. The phone is unfortunately SIM locked; you need to be a Sprint customer for 90 days to get the SIM card slot unlocked for international travel.

Pricing and Conclusions
Sprint sells the Galaxy S 4 for $249.99 with a two-year contract, which is $50 more than both the HTC One and the Apple iPhone 5, and $100 more than the LG Optimus G. Since you'll be paying at least $2,400 in service fees over two years, that $50 isn't much of a real difference.

Just like on T-Mobile, the decision between the Galaxy S 4 and the HTC One comes down to focus versus excess. Here at PCMag, we like a little excess, so we lean towards the Galaxy S 4, but the HTC One has a more beautiful body design and a closer focus on key features that HTC thinks you'll love, like the Blinkfeed Flipboard clone and the Zoe photo/video mode.

We tagged the HTC One as the "first truly compelling smartphone of 2013" when we reviewed it on Sprint a month ago. The Samsung Galaxy S 4 is, of course, the second, and it takes the Editors' Choice crown from the One by a nose. If you're looking to make the most of your Sprint unlimited data,Samsung Galaxy S3, grab a Samsung Galaxy S 4—and hope that Sprint is laying down some LTE near you soon.

Titanfall i cheater potranno giocare solamente contro altri cheater

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Posted by admin | Posted in Allgemein | Posted on 17-04-2014

titanfall 02

Come già noto, la realtà dei cheater ha invaso anche Titanfall. Una buona fetta di utenti che hanno acquistato il gioco su PC hanno deciso di farsi aiutare da una serie di programmi di terze parti, in modo da rendere più semplice la vita online.

Utilizzare quindi programmi come  aimbots, wallhack et similia vorrà dire mandare in allarme il sistema di controllo ideato da Respawn Entertainment,Cover iPhone 5C, denominato FairFight, causando di fatto una sorta di ban ai danni ovviamente del furbetto in questione.

Gli sviluppatori hanno però sottolineato che gli account bannati non verranno estromessi completamente dai server di giochi ma verranno confinati in locazioni virtuali speciali, dando quindi vita a scontri online solamente tra cheater. Sarà quindi la bontà del programma acquistato a determinate la vittoria sul campo di gioco,Cover samsung galaxy note 3.

Ottime notizie quindi per gli utenti onesti, i quali potranno contare su un sistema di controllo in grado di arginare i fastidi di incontrare soldati disonesti sul campo di battaglia.

la soluzione adottata da Respawn Entertainment è senza dubbio originale e fantasiosa, in grado sicuramente di essere molto più efficace di un semplice ban. Ci aspettiamo quindi che la soluzione appena citata venga adottata anche dalle restanti società di sviluppo.

De COS à effet

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Posted by admin | Posted in Allgemein | Posted on 17-04-2014

Mon appareil pour décharger les photos étant définitivement out of order, je vais vous faire patienter avec un aperçu de la nouvelle collection de nos suédois préférés, version COS (Collection Of Style).
Je vous ai déjà copieusement abreuvé de mes litanies dythirambiques sur COS,spartiate femme, la griffe « haut de gamme » lancée par H&M. J’y ai d’ailleurs fait plusieurs raids le printemps dernier qui m’avaient confortée dans mon jugement: COS c’est vraiment bien.

Effectivement, pour les amoureuses des couleurs chatoyantes, des imprimés psychédéliques, des fioritures et kawaiieries diverses, leurs pièces risquent de vous ennuyer sérieusement, pour ne pas dire rebuter définitivement!

Chez COS, sont à l’honneur les basiques, les coupes faussement simples, les non-couleurs (avec tout de même quelques pièces plus flashy dans les coloris phares de la saison en cours).

Ce sont des vêtements à « décoincer », à associer à des pièces plus « légères », moins rigides visuellement parlant.
Je reste persuadée que COS peut devenir incontournable pour les modeuses européennes, si la marque se décide enfin à lâcher un peu de lest dans sa stratégie  » plus c’est rare, plus c’est désirable ».

Franchement, aucune boutique à Paris, comment doit on le prendre? La France n’est pas assez bien pour COS?

Ok, j’ai la chance d’habiter tout près de la Belgique donc la petite virée shopping à Bruxelles n’est pas insurmontable pour moi. C’est même l’occasion d’aller « friter » et « gaufrer » entre copines, n’est ce pas les filles?

Tout cela pour vous dire que l’aperçu que j’ai eu de la nouvelle collection sur leur site me parle.

Non pas que j’adhère spécialement à l’austérité évidente qui se dégage des clichés (pourtant magnifiques et sobres) ou au positionnement de la marque en général.

Mais je reste persuadée que, bien accesoirisées, ces pièces sont dignes des lignes abordables de certaines des grandes griffes européennes.

Voici une petite sélection des vêtements et accessoires qui ont un véritable potentiel à mes yeux (toujours les imaginer décomplexés par des pièces ou accessoires plus joyeux, pour celles qui sont définitivement réfractaires à un esprit très « Jil Sander »).

image-10.png

Les derbies très masculines associées à la robe ultra simple et aux collants opaques.

image-13.png

La chemise façon « Tuxedo » que j’imagine associée à un pantalon large taille haute.

image-14.png

La robe pull avec laquelle il faudra compter une fois encore cet hiver. Une paire de collants opaques, des bottes vintage, une tenue casual confortable juste sexy comme il faut sans tomber dans la caricature.

image-15.png

L’écharpe en cachemire,Sandales plates, incontournable. Le plus? Son petit prix aussi doux que l’écharpe: 39€.

image-18.png

image-17.png

Les sacs, on n’aime ou pas leur côté un peu strict teinté de vintage. J’aime leur inspiration « Chloé » sans être du plagiat.

image-19.png

Le sautoir en cuir, épuré, chic sans en faire trop.

image-20.png

image-21.png

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Ne surtout pas oublier d’aller piocher dans les accessoires pour homme: les écharpes rayées et les gants de pilote so Karl par exemple, si les tailles commencent au S, c’est jouable pour les « petites mains ».

Mod egrave;le de coiffure le headband de Milla Jovovich

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Posted by admin | Posted in Allgemein | Posted on 15-04-2014

Toujours une longueur d’avance pour Milla Jovovich qui ne sort jamais sans sa fille, son jean et son « headband » plus sexy rock que princesse. Cosmo vous dévoile le mode d’emploi du néo-diadème de Milla Jovovich.

Modèle de coiffure : le headband de Milla Jovovich
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Modèle de coiffure : le headband de Milla Jovovich

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suivant
suivant

À vous de voter :

J'aime

J’aime

J'aime pas

J’aime pas

  • Modèle de coiffure : le headband de Milla Jovovich

  • Arrêter le temps : un sérum Wella

  • Respecter sa nature : une crème Phytopure

  • Jouer les anglaises : une crème René Furterer

  • Éviter la casse : un shampooing L'Oréal Professionnel

  • Accessoires cheveux : les élastiques rock

 

  • Je veux la même coiffure que Milla Jovovich

 

Une queue-de-cheval sur le côté, nouée à la va-vite et glamourisée par un bandeau bijou, faussement sage.

 

  • Ça me va si…

Comme Milla Jovovich, j’ai les cheveux longs. Si je n’ai pas le visage trop rond ni les cheveux trop fins.

 

  • Comment je me coiffe ?

Je me brosse les cheveux, secs, tête penchée en avant pour créer du volume.

 

Puis je les froisse avec un peu de pâte modelante au creux des mains, toujours la tête en bas, pour fixer ce froissé sauvageonne.

 

Je relève la tête et je torsade les longueurs en une queue-de-cheval que je noue, pas trop serré avec un élastique, sur le côté, juste au-dessus de l’oreille.

 

Enfin, je glisse simplement mon bijou accessoire sur la tête.

 

  • L’astuce

Si je n’ai pas de headband, je pioche dans ma boîte à bijoux un long sautoir en perles ou en strass, fixé par deux épingles à cheveux : illusion et coup d’éclat garantis.

 

  • Et si j’ai…

 

Le front dégagé ? Surtout, je ne transforme pas cet accessoire en serre-tête BCBG : je le positionne à la racine des cheveux, et je garde les longueurs ébouriffées.

&nbsp,Talons hauts;

Un bandeau large et épais : je ne suis pas dans « Les bronzés font du ski ». Une frange courte, lisse et droite : je ne suis pas une Tokyo girl.

 

Merci à Christophe Nicolas Biot, 27, rue des Grands-Augustins, Paris 6e.

 

Juegos de dos jugadores para tu tablet Android

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Posted by admin | Posted in Allgemein | Posted on 14-04-2014

Sin duda una de las funcionalidades que buscamos en una tablet es la del entretenimiento. En estos momentos podemos encontrar en el Android Market una gran cantidad de juegos con los que poder pasar el rato mientras estamos en el sofá, metro, salas de espera, etc. Hay gran variedad de juegos, desde juegos con unos gráficos espectaculares hasta otros que buscan más la originalidad, jugabilidad, simplicidad, etc.

En este artículo voy a proponer un tipo de juego genial para jugar con una tablet android. Quizás no sean los ideales para jugar con un teléfono móvil debido al tamaño de la pantalla y de que se tratan de juegos para dos jugadores utilizando el mismo dispositivo,Funda Galaxy note3. Estos juegos vienen genial para jugar con la pareja o amigos utilizando la misma tablet,samsung Galaxy S4 wiki.

Mahjong

Empezamos por un clásico. ¿Quién no ha jugado en algún bar a una de esas máquinas “de tocar”? Podíamos encontrar muchos juegos como el trivial, buscar las diferencias, etc. Uno de los preferidos de muchos (entre los que me incluyo) era el típico juego Mahjong.

No es un juego estrictamente de dos jugadores, pueden ser más las personas que jueguen a la vez o incluso nosotros solos. El juego es totalmente gratuito.

Mahjong
Mahjong
Gratis
Mahjong
  • Mahjong

Memory for Two

Otro juego como el anterior de los que podíamos encontrar en las máquinas de los bares. Por turnos, uno vez cada jugador, iremos dando la vuelta a dos cartas intentando encontrar dos iguales. Si fallamos, será el turno del otro jugador que intentará recordar las cartas que han aparecido anteriormente para poder hacer más parejas que el otro.

Memory for Two
Memory for Two
Gratis
Memory for Two
  • Memory for Two

Platinum Air Hockey

Otro de los clásicos a los que se juega en pareja. A este juego muy pocas veces hemos podido hacerlo utilizando una pantalla (hasta hoy). Se trata de anotar gol en la portería del adversario utilizando un disco y unos mazos con los que golpeamos el disco. En nuestra tablet no tendremos que hacer tanto esfuerzo, solamente pondremos el dedo encima de nuestro mazo y golpearemos al disco, intentado meter gol en la portería del contrario.

Platinum Air Hockey (Free)
Platinum Air Hockey (Free)
Gratis
Platinum Air Hockey (Free)
  • Platinum Air Hockey (Free)

Paper War for two

El objetivo del juego es conseguir la puntuación objetivo antes de que lo consiga tu oponente. El juego tiene tres modos de juego con diferentes puntuaciones que debemos conseguir.

Juego bastante entretenido que podemos conseguir totalmente gratis.

Paper War for 2
Paper War for 2
Gratis
Paper War for 2
  • Paper War for 2

Pool Master Pro

Juego de billar que cuenta con un modo de juego para dos jugadores. No creo que haga falta explicar mucho este juego, podemos jugar en las modalidades 8-ball o 9-ball.

Billar Maestro Pool Master Pro
Billar Maestro Pool Master Pro
Gratis
Billar Maestro Pool Master Pro
  • Billar Maestro Pool Master Pro

Tres en línea

Para acabar, uno de los juegos más simples pero que mayor entretenimiento nos ofrece como juego para dos jugadores.

Tres en Linea
Tres en Linea
Gratis
Tres en Linea
  • Tres en Linea

Esta solo es una pequeña lista de juegos para dos jugadores que podemos probar en nuestra querida tablet con Android. Tu seguro que conoces alguno más… ¡Cuéntanoslo en los comentarios!



Scientists invent self-healing battery electrode

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Posted by admin | Posted in Allgemein | Posted on 12-04-2014

Nov. 17, 2013 — Researchers have made the first battery electrode that heals itself, opening a new and potentially commercially viable path for making the next generation of lithium ion batteries for electric cars, cell phones and other devices. The secret is a stretchy polymer that coats the electrode, binds it together and spontaneously heals tiny cracks that develop during battery operation, said the team from Stanford University and the Department of Energy’s (DOE) SLAC National Accelerator Laboratory.


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They reported the advance in the Nov. 19 issue of Nature Chemistry.

"Self-healing is very important for the survival and long lifetimes of animals and plants," said Chao Wang, a postdoctoral researcher at Stanford and one of two principal authors of the paper. "We want to incorporate this feature into lithium ion batteries so they will have a long lifetime as well."

Chao developed the self-healing polymer in the lab of Stanford Professor Zhenan Bao, whose group has been working on flexible electronic skin for use in robots, sensors, prosthetic limbs and other applications. For the battery project he added tiny nanoparticles of carbon to the polymer so it would conduct electricity.

"We found that silicon electrodes lasted 10 times longer when coated with the self-healing polymer, which repaired any cracks within just a few hours," Bao said.

"Their capacity for storing energy is in the practical range now, but we would certainly like to push that,Coques iPhone 5," said Yi Cui, an associate professor at SLAC and Stanford who led the research with Bao. The electrodes worked for about 100 charge-discharge cycles without significantly losing their energy storage capacity. "That’s still quite a way from the goal of about 500 cycles for cell phones and 3,000 cycles for an electric vehicle," Cui said, "but the promise is there,coque samsung galaxy note 2, and from all our data it looks like it’s working."

Researchers worldwide are racing to find ways to store more energy in the negative electrodes of lithium ion batteries to achieve higher performance while reducing weight. One of the most promising electrode materials is silicon; it has a high capacity for soaking up lithium ions from the battery fluid during charging and then releasing them when the battery is put to work.

But this high capacity comes at a price: Silicon electrodes swell to three times normal size and shrink back down again each time the battery charges and discharges, and the brittle material soon cracks and falls apart, degrading battery performance. This is a problem for all electrodes in high-capacity batteries, said Hui Wu, a former Stanford postdoc who is now a faculty member at Tsinghua University in Beijing, the other principal author of the paper.

To make the self-healing coating, scientists deliberately weakened some of the chemical bonds within polymers — long, chain-like molecules with many identical units. The resulting material breaks easily, but the broken ends are chemically drawn to each other and quickly link up again, mimicking the process that allows biological molecules such as DNA to assemble, rearrange and break down.

Researchers in Cui’s lab and elsewhere have tested a number of ways to keep silicon electrodes intact and improve their performance. Some are being explored for commercial uses, but many involve exotic materials and fabrication techniques that are challenging to scale up for production.

The self-healing electrode, which is made from silicon microparticles that are widely used in the semiconductor and solar cell industry, is the first solution that seems to offer a practical road forward, Cui said. The researchers said they think this approach could work for other electrode materials as well, and they will continue to refine the technique to improve the silicon electrode’s performance and longevity.