Friday, May 21, 2010

Awal Kehidupan Buatan

Peneliti Kembangkan Sel Hidup Sintetis

Peneliti Amerika Serikat tengah mengembangkan sel bakteri hidup sintetis yang bisa mengembangkan diri. “Ini adalah penelitian sel sintetik yang pertama dilakukan,” kata peneliti utama Craig Venter, saat memresentasikan hasil penelitian 15 tahun itu. “Kami menyebut sel ini sintetik karena benar-benar diambil dari kromosom sintetik, dibuat dari empat botol penyelaras kimiawi, dari informasi di komputer.”

Metode ini dapat diulang untuk merancang bakteri yang secara khusus dapat membantu produksi biofuel atau untuk membersihkan kecelakaan lingkungan (seperti tumpahan minyak BP yang kini terjadi di AS). Studi ini dilakukan oleh institute J Craig Venter dan diterbitkan di jurnal Science.

Sel sintetis ini dapat digunakan untuk memproduksi semacam ganggang untuk menyerap karbondioksida, salah satu gas rumah kaca yang dalam jumlah berlebih akan memperparah pemanasan global, atau untuk mengembangkan energi terbarukan yang lebih bersih.

Peneliti juga berharap dapat mengembangkan teknik ini untuk mempercepat produksi vaksin dan mengembangkan bahan makanan baru serta senyawa kimiawi lainnya. “(Metode) ini menjadi alat yang sangat berkuasa untuk merancang apa yang kita inginkan dari biologi,” kata Venter.

Tim peneliti Venter mendapat kritikan bahwa upaya mereka ini seperti membuka kotak Pandora menuju mahluk hidup buatan. Dalam wawancara dengan BBC, Venter membela diri dari tuduhan bahwa ia sedang berupaya menjadi Tuhan. “Itu istilah yang selalu muncul setiap kali ada terobosan baru di dunia medis atau ilmiah terkait biologi,” kata dia.

“Sedari awal, tujuan kemanusiaan adalah mencoba mengendalikan alam…itu sebabnya kita menjinakkan hewan. Ini adalah tahap selanjutnya dalam pemahaman kita, langkah kecil untuk mengerti bagaimana kehidupan sebenarnya berjalan dan mungkin bagaimana kita bisa mengendalikan sistem mikroba ini sehingga menguntungkan kemanusiaan.” (AFP/Yahoo! Singapore)

Google TV : TV Meets WEB . WEB Meets TV

Google tries where others failed: shaking up TV biz

Fri May 21, 2010 7:05pm EDT

Google Inc CEO Eric Schmidt introduces Google TV, blending web 
technology and television, in collaboration with various partners, at 
the company's annual developer conference in San Francisco, California 
May 20, 2010. REUTERS/Robert Galbraith
NEW YORK (Reuters) - Google TV, a service that will bring the Web to television screens, is likely to create more headaches for broadcast and cable executives already concerned with being sidelined by free online video shows on computers.
At stake are billions of dollars in advertising spending, a prospect that has enticed a number of others, including Apple Inc, Yahoo Inc and Microsoft Corp, to take a stab at converting the TV set into a full interactive device on a large scale.

"Many have tried to integrate Web video on the TV, with great fanfare, and failed to make a ripple," said Barton Crockett, analyst at Lazard Capital Markets.

Google Inc's plan would have consumers buy a Google TV device that can then be connected to an existing set-top box, allowing users to surf the Web or watch videos on their TV sets.

For now, financial analysts and industry observers are largely biding their time before deciding if Google TV will live up to its buzz, given the number of unsuccessful efforts in the past.

Yet Lazard's Crockett said "even if Google TV fails, someone will figure this out," pointing to the increasing popularity of online video sites like Hulu and Netflix Inc for streaming TV shows and movies.

Google's demo showed how TV programs from sites like Hulu can be viewed easily in the living room -- yet it was unclear if Hulu and its three broadcast owners were on board with the Web search giant.

A spokesman for Hulu, owned by Walt Disney Co, News Corp and General Electric Co's NBC, declined to comment on Google TV.

Hulu has already blocked its content from other Web TV devices from privately held Boxee and Sony Corp's Playstation 3 that can be connected to a television on fears it may hurt the traditional television business.
Google TV will feature the usual search and display advertising a user would find online, the company said, adding that it does not plan to make any payments to TV companies for the content that those searches pull up.

That might draw fire from the TV advertising industry. What is more, Google TV could undermine the industry's own plans to create and sell ever-more targeted advertising, the Holy Grail of the business.
CBS Corp, for one, is keeping an eye on Google TV. "As content owners we applaud innovation," said Zander Lurie, senior vice president of strategic development at CBS.
"On the business model side, we are more prudent about how we evaluate new technologies and how deep we dive in," he said.
By most accounts, Google TV will put pressure on the TV industry to accelerate its own efforts at targeted advertising -- efforts that have moved slowly. One of the biggest, Canoe, a joint venture between cable companies, still isn't completely up and running two years after it was launched.

"The ad model will have to evolve as there is a fundamental shift from linear viewing to on demand," said Chris Allen, vice president director of video innovation at ad agency Starcom USA.

He said the idea is to make advertising less intrusive but still very effective by applying advance targeting techniques.

"You can't just repurpose existing TV advertising."
Whether it is Google TV or not, most analysts contend that the industry needs to offer consumers the kind of search functionality they have come to expect on the Web.

"In 2010 it's all about search and navigation whether it's (Comcast Corp CEO) Brian Roberts introducing the TV search function on an iPad at the Cable Show or DirecTV Group's Smart Search on DVR," said Collins Stewart analyst Thomas Eagan.

Google worked with Sony's TV division and Intel Corp in developing Google TV. It also worked closely for a year with Dish Network Corp, the No.2 U.S. satellite TV provider.

Dish Chief Marketing Officer Ira Bahr said customers would benefit from more advanced search features, such as bringing up search results from the Web alongside results from their DVR and video-on-demand service.

"The challenge is to differentiate ourselves from other multichannel operators and Google TV project has the ability to capture people's imagination in a way that nothing else has since the DVR," said Bahr.
(Reporting by Yinka Adegoke; Additional reporting by Sue Zeidler in Los Angeles; Editing by Paul Thomasch and Richard Chang)

Tuesday, May 18, 2010

Wow teknologi keren

Thursday, April 29, 2010

Another New free energy : Magnetic energy

Wednesday, April 28, 2010

Solar Hot Water Heaters

Solar water heaters—also called solar domestic hot water systems—can be a cost-effective way to generate hot water for your home. They can be used in any climate, and the fuel they use—sunshine—is free.
How They Work
Solar water heating systems include storage tanks and solar collectors. There are two types of solar water heating systems: active, which have circulating pumps and controls, and passive, which don’t.
Most solar water heaters require a well-insulated storage tank. Solar storage tanks have an additional outlet and inlet connected to and from the collector. In two-tank systems, the solar water heater preheats water before it enters the conventional water heater. In one-tank systems, the back-up heater is combined with the solar storage in one tank.

Diagram explaining how solar water heating wor...
Three types of solar collectors are used for residential applications:
* Flat-plate collector
Glazed flat-plate collectors are insulated, weatherproofed boxes that contain a dark absorber plate under one or more glass or plastic (polymer) covers. Unglazed flat-plate collectors—typically used for solar pool heating—have a dark absorber plate, made of metal or polymer, without a cover or enclosure.
* Integral collector-storage systems
Also known as ICS or batch systems, they feature one or more black tanks or tubes in an insulated, glazed box. Cold water first passes through the solar collector, which preheats the water. The water then continues on to the conventional backup water heater, providing a reliable source of hot water. They should be installed only in mild-freeze climates because the outdoor pipes could freeze in severe, cold weather.
* Evacuated-tube solar collectors
They feature parallel rows of transparent glass tubes. Each tube contains a glass outer tube and metal absorber tube attached to a fin. The fin’s coating absorbs solar energy but inhibits radiative heat loss. These collectors are used more frequently for U.S. commercial applications.

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