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Sunday, December 23, 2007

Splendor Telecom, has recently launched Ahwar Messenger, the first all-in-one Internet solution designed to provide the Arab community

Internet messenger now in Arabic
For communication , for business for research now a days its the fastest time to send messege . . on demand its now in various language.

Splendor Telecom, has recently launched Ahwar Messenger, the first all-in-one Internet solution designed to provide the Arab community with a perfect online experience.

For the first time ever, Arab speakers will be able to use their Internet messenger in their native language as Ahwar Messenger offers them a unique blend of services including: online chatting, international phone calls to fixed and mobile lines at low cost, video calls, and a number of powerful Internet applications for greater communication flexibility.

Conceived from advanced communication technology, Ahwar Messenger gives all Arab users the opportunity to keep in touch with family and friends in their own language, wherever they are, all over the world.

"Ahwar Messenger has been designed in Arabic in order to address the Arab community especially that all similar global programs focus on American and European countries disregarding the Arab region," said Omar Ounsi, General Manager of Splendor Telecom. "Ahwar Messenger proves the high ability of Arab enterprises to develop their technical knowledge and expertise while competing with internationally renowned companies; it combines the most advanced technology with the best prices and services."

He added: "The personal messenger has become a very important communication tool and is integrated in every personal computer which facilitates communication between subscribers".

"Whenever one wants to contact a fixed or mobile phone line anywhere in the world, Ahwar Messenger is the first to guarantee the best voice quality at the lowest price starting 2 cents per minute without any additional cost," confirmed Michael Mansour, Chief Operating Officer of Splendor Telecom.

Ahwar Messenger services operate through prepaid rechargeable cards, available at competitive prices throughout the region. Today, it is the most advanced Arabic communication technology in the world supported by Arabic or English technical assistance 24 hours 7 days a week.

Saturn's Largest Moon

BYU professor Jani Radebaugh stands in front of an image of Titan taken with the Cassini Visual and Infrared Mapping Spectrometer (VIMS) instrument. "Bright features generally correspond to features of high topography, such as the mountains seen by the Radar instrument, and dark materials generally correspond to large dune fields made of organic particles," Radebaugh explains. "Thus, the rocky highlands are interspersed among the sand 'seas,' similar to Earth's continents and oceans

Mountains Discovered On Titan, Saturn's Largest Moon

By analyzing images from NASA’s Cassini Radar instrument, a Brigham Young University professor helped discover and analyze mountains on Saturn’s largest moon, additional evidence that it has some of the most earthlike processes of any celestial body in the solar system.

According to the study, Titan’s mountains are most likely made of water ice and are relatively small in height, at most 2 km (1.25 mi) from base to peak. The consistently short height of Titan’s mountains provides evidence that they have been subject to similar amounts of erosion, that they are roughly the same age or that the materials are behaving in a way that prevents them from growing taller.

Planetary scientist Jani Radebaugh is lead author of the discovery paper in the December issue of the astronomy journal Icarus. The images retrieved by the Cassini Radar are the first images showing the details of Titan’s surface – previous spacecraft and telescopes could not pierce the haze and clouds surrounding the moon to the surface.

The discovery of mountains on Titan grew out of Radebaugh’s collaboration with a research team that recently found sand dunes and methane lakes on Titan. Radebaugh was a coauthor on the Science study that introduced Titan’s sand dunes in May 2006 as well as the Nature study that introduced Titan’s methane lakes in January 2007.

“Since this is the first time humans have been able to see through the haze to Titan’s surface, it was shocking to find these mountains, channels, dunes, and cryo-lava flows,” Radebaugh said. “We had to wait until we got all the way to Titan to see these landforms that are so similar to Earth.”

Upon receiving the images from NASA, Radebaugh, in collaboration with the Cassini Radar Team, discovered the mountains and began analyzing their characteristics. With no instrument to precisely measure the mountains’ height, Radebaugh looked at the light and shadows in the radar images to calculate the mountains’ slope and then derive their height.

“Dr. Radebaugh’s work represents an important advance in our understanding of that icy moon and the Earth,” said Dr. Jason Barnes, a research scientist at the NASA Ames Research Center. “Her discovery tells us about the mountain-building process in general and about Titan’s crust in particular.”

Prior to Cassini, scientists assumed that most of the topography on Titan would be impact structures, yet these new findings reveal that similar to Earth, the mountains were formed through geological processes on the moon.

Radebaugh proposes four possible explanations for the formation of the mountains on Titan. The first possibility is that the mountains were thrust up from crustal compression, horizontal forces smashing the crust together and upward. Alternatively, Titan’s mountains may have formed through spreading or separation of the crust, in the same way that Utah’s Wasatch Mountains separated from the Oquirrh Mountains to the west.

It’s also possible some of the mountains have been created by impact craters that threw out blocks of material, or that erosion stripped away a preexisting layer of material and left high-standing features like the mountains.

Since the processes on Titan are so similar to Earth’s, Radebaugh also concluded in the study that Titan may be an interesting laboratory for studying Earth. Like Earth, Titan possesses the primary ingredients for life, namely energy, water and organics. Information from Titan will help scientists better understand the Earth’s origin, formative processes and development of life.

“We still don’t understand exactly how life began on Earth, so if we can understand how the fundamentals of these processes may be starting in some laboratory like Titan, it will help us understand the Earth a lot better,” Radebaugh said.

In addition to analyzing images from space, Radebaugh also looks on planet earth for clues about the geology of other planets, moons and objects in the solar system. Two years ago Radebaugh scoured Antarctica for meteorites with the Antarctic Search for Meteorites (ANSMET) program. Through field work at Hawaiian volcanoes, she has also worked with students to utilize a technique for using a camcorder to measure eruption temperatures in the hope of learning more about volcanoes on Io, a moon of Jupiter.

Britain's Queen Elizabeth II launched a channel on the popular video-sharing website

Britain's Queen Elizabeth II visits Kitante Primary School in Kampala on the last day of her state visit to Uganda November 24, 2007. Buckingham Palace on Sunday said the 81-year-old monarch will post her traditional Christmas Day message -- normally broadcast on television -- on the video-sharing Web site as well this year.

Britain's Queen gets technology savvy

Britain's Queen Elizabeth II launched a channel on the popular video-sharing website YouTube Sunday, British press reports said, citing Buckingham Palace.

Known as The Royal Channel, the online video service plans to feature the queen's 50th traditional Christmas Day message for the first time this year, Sunday's Observer weekly reported.

The queen, who did not use a personal computer until two years ago, was told of the YouTube phenomenon by her grandchildren, Princesses Beatrice and Eugenie, the Observer reported.

The channel was due to be launched on Sunday with footage of the queen's parents' wedding in 1923 and of Queen Alexandra visiting rose sellers in London in 1917.

Other footage to be included at the launch shows reaction to George VI's death, the queen's accession to the throne and her coronation, the report said.

The palace plans to add more footage and also to translate it into various languages, the reports said.

The channel can be viewed at

Britain's Queen Elizabeth goes global on YouTube

Queen Elizabeth is joining the YouTube generation.

Buckingham Palace on Sunday said the 81-year-old monarch will post her traditional Christmas Day message -- normally broadcast on television -- on the video-sharing Web site as well this year.

At the same time, a new Royal Channel has been unveiled on YouTube, allowing Web surfers to view the queen's first Christmas broadcast in 1957, as well as other archive footage of the royal family and its events.
The catalogue is at

The queen is said to be avid about using new technology to reach a wider, more diverse audience. Last year her Christmas message was released as a podcast.

In her first Christmas broadcast 50 years ago, she waxed lyrical about the advent of television.

"I very much hope that this new medium will make my Christmas message more personal and direct," she said. "That it is possible for you to see me today is just another example of the speed at which things are changing all around us."

Queen Elizabeth's message is followed closely by millions of Britons and others in Commonwealth countries worldwide on Christmas Day each year.

Buckingham Palace revealed this week the queen likes to sneak off from the rest of her family on Christmas Day and watch the recorded message alone, judging for herself how she comes across.

Yahoo! Researchers Awarded Top Honors in Computer Science

Yahoo! Researchers Awarded Top Honors in Computer Science and Information Technology from ACM and IEEE

BUSINESS WIRE)--Yahoo! Inc. (Nasdaq:YHOO), a leading global Internet company, today announced that three world-renowned scientists from Yahoo! Research have been recognized for their achievements in fields key to developing the next-generation of Internet experiences, including computer science, artificial intelligence, data mining, and algorithm engineering. Dr. Andrei Broder was named Fellow of the Association for Computing Machinery (ACM) and Dr. Ron Brachman and Dr. Raghu Ramakrishnan were named Fellows of the Institute of Electrical and Electronics Engineers (IEEE). These prestigious honors recognize individuals who have made significant contributions to both the practical and theoretical aspects of computing and information technology.

Broder is a fellow and vice president for computational advertising and search technology at Yahoo! Research where he conducts new research on the intersection of information retrieval, machine learning, optimization, and microeconomics and leads the computational advertising group. He was selected for the honor of ACM Fellow for contributions to algorithms and web technology.

Brachman is the vice president of worldwide research operations for Yahoo! Research and is responsible for all operational activities for the organization; his responsibilities also include overseeing academic relations for all of Yahoo!. Brachman was selected as an IEEE Fellow for his leadership in knowledge representation and reasoning in computer science and artificial intelligence.

Ramakrishnan is chief scientist for Yahoo!’s audience group and a Yahoo! Research Fellow, heading up the community systems group. Ramakrishnan was selected as an IEEE Fellow for his contributions to the fields of deductive databases, data mining and query optimization.

"We are honored to have so many of our talented researchers recognized by top scientific organizations and the academic community at large for their technical and scientific contributions to both academic and product and systems accomplishments,” said Dr. Usama Fayyad, EVP and chief data officer for Yahoo! “At Yahoo!, critical research into the sciences that underpin the Internet are helping us to create increasingly indispensable experiences for our users and to advance the positive impact of the Internet around the world.”

As a testimony to the depth of talent and expertise on Yahoo!’s fast-growing research team – which is one of the largest in the world focused on the new sciences of the Internet – Broder joins four other ACM Fellows at Yahoo!: Brachman; Fayyad; Dr. Prabhakar Raghavan, head of Yahoo! Research; and Ramakrishnan. Previous honorees from Yahoo! as IEEE Fellows include Broder and Raghavan.

Yahoo! Research’s mission is to develop the world-class science that will deliver the next generation of businesses to the company. Yahoo!’s scientists focus on data-driven analysis, high-quality search, algorithms and economic models. Yahoo! Research is committed to an open culture of collaboration with peers from academic and research institutions, with a focus on simultaneously publishing scientific work of the highest standard and driving a research agenda with significant impact for the company.

ACM is an educational and scientific society uniting the world's computing educators, researchers and professionals to inspire dialogue, share resources and address the field's challenges. The ACM Fellows program was established to recognize outstanding ACM members for technical, professional and leadership contributions.

IEEE is the world’s largest technical professional society. The organization fosters technological innovation and excellence for the benefit of humanity. Through its more than 370,000 members in 160 countries, IEEE is a leading authority on a wide variety of areas ranging from aerospace systems, computers and telecommunications to biomedical engineering, electric power and consumer electronics. IEEE Fellow is the highest grade of membership and is recognized by the technical community as a prestigious honor and an important career achievement.

About Yahoo! Inc.

Yahoo! Inc. is a leading global Internet brand and one of the most trafficked Internet destinations worldwide. Yahoo! is focused on powering its communities of users, advertisers, publishers, and developers by creating indispensable experiences built on trust. Yahoo! is headquartered in Sunnyvale, California. For more information, visit ( or the company's blog, Yodel Anecdotal (

MIT works toward engineered blood vessels :Vessels could be used in human body

When endothelial progenitor cells are grown on a nanopatterned substrate, they align in the direction of the pattern (right). At left are cells grown on a flat surface.
MIT scientists have found a way to induce cells to form parallel tube-like structures that could one day serve as tiny engineered blood vessels.

The researchers found that they can control the cells' development by growing them on a surface with nano-scale patterning. A paper on the work was posted this month in an online issue of Advanced Materials.

Engineered blood vessels could one day be transplanted into tissues such as the kidneys, liver, heart or any other organs that require large amounts of vascular tissue, which moves nutrients, gases and waste to and from cells.

"We are very excited about this work," said Robert Langer, MIT Institute Professor and an author of the paper. "It provides a new way to create nano-based systems with what we hope will provide a novel way to someday engineer tissues in the human body."

The work focuses on vascular tissue, which includes capillaries, the tiniest blood vessels, and is an important part of the circulatory system. The team has created a surface that can serve as a template to grow capillary tubes aligned in a specific direction.

The researchers built their template using microfabrication machinery at Draper Laboratory in Cambridge. Normally such technology is used to build micro-scale devices, but the researchers adapted it to create nano-scale patterns on a silicone elastomer substrate. The surface is patterned with ridges and grooves that guide the cells' growth.

"The cells can sense (the patterns), and they end up elongated in the direction of those grooves," said Christopher Bettinger, MIT graduate student in materials science and engineering and lead author of the paper.

The cells, known as endothelial progenitor cells (EPCs), not only elongate in the direction of the grooves, but also align themselves along the grooves. That results in a multicellular structure with defined edges, also called a band structure.

Once the band structures form, the researchers apply a commonly used gel that induces cells to form three-dimensional tubes. Unlike cells grown on a flat surface, which form a network of capillary tubes extending in random directions, cells grown on the nano-patterned surface form capillaries aligned in the direction chosen by the researchers.

The researchers believe the technique works best with EPCs because they are relatively immature cells. Earlier attempts with other types of cells, including mature epithelial cells, did not produce band structures.

Growing tissue on a patterned surface allows researchers a much greater degree of control over the results than the classic tissue engineering technique of mixing cell types with different growth factors and hoping that a useful type of tissue is produced, said Bettinger.

"With this technique, we can take the guesswork out of it," he said.

The next step is to implant capillary tubes grown in the lab into tissues of living animals and try to integrate them into the tissues.

Other authors of the paper are Jeffrey Borenstein, director of the Biomedical Engineering Center at Draper Laboratory; Zhitong Zhang, an MIT senior in the Department of Chemical Engineering; and Sharon Gerecht of Johns Hopkins University.

The research was funded by the National Institutes of Health, Draper Laboratory and the Juvenile Diabetes Research Foundation.

MIT corrects inherited retardation, autism in mice

Mark Bear, director of the Picower Institute and Picower Professor of Neuroscience (right), and Gül Dölen, a graduate student at Brown University, report the correction of fragile X syndrome in mice
Research points to potential drug treatment for humans.
Researchers at MIT's Picower Institute for Learning and Memory have corrected key symptoms of mental retardation and autism in mice.

The work, which will be reported in the Dec. 20 issue of Neuron, indicates that a certain class of drugs could have the same effect in humans. These drugs are not yet approved by the FDA, but will soon be entering into clinical trials.

Fragile X syndrome (FXS), affecting 100,000 Americans, is the most common inherited cause of mental retardation and autism. The MIT researchers corrected FXS in mice modeling the disease. "These findings have major therapeutic implications for fragile X syndrome and autism," said study lead author Mark F. Bear, director of the Picower Institute and Picower Professor of Neuroscience at MIT.

The findings support the theory that many of FXS's psychiatric and neurological symptoms--learning disabilities, autistic behavior, childhood epilepsy--stem from too much activation of one of the brain's chief network managers, the metabotropic glutamate receptor mGluR5.

"Fragile X is a disorder of excess--excess synaptic connectivity, protein synthesis, memory extinction, body growth, excitability--and remarkably, all these excesses can be reduced by reducing mGluR5," said Bear, a Howard Hughes Medical Institute investigator.

Individuals with FXS have mutations in the X chromosome's FMR1 gene, which encodes the fragile X mental retardation protein, FMRP. The MIT study found that FMRP and mGluR5 are at opposite ends of a kind of molecular seesaw. They keep each other in check and, without FMRP, mGluR5 signals run rampant.

Bear and colleagues study how genes and environment interact to refine connections in the brain. Synapses are the brain's connectors and their modifications are the basis for all learning and memory. There's a growing consensus among researchers that developmental brain disorders such as FXS, autism and schizophrenia should be considered "synapsopathies"--diseases of synaptic development and plasticity (the ability to change in response to experience).

Dendritic spines--little nubs on neurons' branchlike projections--receive many of the synaptic inputs from other neurons. Abnormal spines have long been associated with various forms of human mental retardation. In FXS, spines are more numerous, longer and more spindly than they should be. Thin spines tend to form weak connections.

The research team found that a 50 percent reduction in mGluR5 fixed multiple defects in the fragile X mice. In addition to correcting dendritic spines, reduced mGluR5 improved altered brain development and memory, restored normal body growth and reduced seizures--many of the symptoms experienced by humans with FXS.

The researchers used genetic engineering to reduce mGluR5, but a drug could accomplish the same thing. Although not yet approved by the FDA, mGluR5 blockers are entering into human clinical trials. "Insights gained by this study suggest novel therapeutic approaches, not only for fragile X but also for autism and mental retardation of unknown origin," Bear said.

Earlier this year, MIT Picower Institute researcher Susumu Tonegawa and colleagues reported positive results using a different approach to reversing FXS symptoms. Tonegawa and colleagues identified a key enzyme called p21-activated kinase, or PAK, that affects the number, size and shape of connections between neurons.

In addition to Bear, authors include Brown University graduate student Gül Dölen; Picower Institute postdoctoral fellow Emily Osterweil; B.S. Shankaranarayana Rao of the National Institute of Mental Health and Neuroscience in India; MIT graduate students Gordon B. Smith and Benjamin D. Auerbach; and Sumantra Chattarji of the National Center for Biological Sciences and Tata Institute of Fundamental Research in India.

This work is supported by the National Institute of Mental Health; the National Institute of Child Health and Human Development; the National Fragile X Foundation; FRAXA, a Fragile X research foundation; and the Simons Foundation.

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