قال الله تعالى

 {  إِنَّ اللَّــهَ لا يُغَيِّــرُ مَـا بِقَــوْمٍ حَتَّــى يُـغَيِّـــرُوا مَــا بِــأَنْــفُسِــــهِـمْ  }

سورة  الرعد  .  الآيـة   :   11

ahlaa

" ليست المشكلة أن نعلم المسلم عقيدة هو يملكها، و إنما المهم أن نرد إلي هذه العقيدة فاعليتها و قوتها الإيجابية و تأثيرها الإجتماعي و في كلمة واحدة : إن مشكلتنا ليست في أن نبرهن للمسلم علي وجود الله بقدر ما هي في أن نشعره بوجوده و نملأ به نفسه، بإعتباره مصدرا للطاقة. "
-  المفكر الجزائري المسلم الراحل الأستاذ مالك بن نبي رحمه الله  -

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لنكتب أحرفا من النور،quot لنستخرج كنوزا من المعرفة و الإبداع و العلم و الأفكار

الأديبــــة عفــــاف عنيبـــة

السيـــرة الذاتيـــةالسيـــرة الذاتيـــة

أخبـــار ونشـــاطـــاتأخبـــار ونشـــاطـــات 

اصــــدارات الكـــــاتبــةاصــــدارات الكـــــاتبــة

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Japanese neurosurgeons have implanted ‘reprogrammed’ stem cells into the brain of a patient with Parkinson’s disease for the first time. The condition is only the second for which a therapy has been trialled using induced pluripotent stem (iPS) cells, which are developed by reprogramming the cells of body tissues such as skin so that they revert to an embryonic-like state, from which they can morph into other cell types. Scientists at Kyoto University use the technique to transform iPS cells into precursors to the neurons that produce the neurotransmitter dopamine. A shortage of neurons producing dopamine in people with Parkinson’s…
The terrestrial land surface has a crucial role in the global carbon cycle, providing feedbacks to changes in atmospheric levels of carbon dioxide and associated climate change1. Increases in atmospheric CO2concentrations and in soil and air temperatures worldwide over the past several decades have been paralleled by an increase in the metabolism of organisms at the land surface — as demonstrated by enhanced rates of CO2 uptake, mainly by plants through photosynthesis, and of CO2 loss from plants and soil microorganisms, mostly owing to respiratory processes2–6. In a paper in Nature, Bond-Lamberty et al.7 report that the rate of increase of CO2 loss is outpacing that of…
السبت, 30 حزيران/يونيو 2018 09:48

Tesla Motors, The Visionary Dream of Elon Musk [Futures & Risks]

كتبه
I have to be honest with you: when I think of a Tesla car my mind expands and my senses get heightened. Actually, it’s enough to read something about the company and I feel my interest growing! If you feel the same and you want to know more about the most interesting company of the hour, stick with us. In the rows below we’ll have a heart-to-heart about Tesla Motors and the cars it produces.   First, I think it’s important to know that Tesla Motors was founded in 2003 by Elon Musk and a few other car enthusiasts who…
From the window of a Nasa aircraft flying over the Arctic, looking down on the ice sheet that covers  most of Greenland, it’s easy to see why it is so hard to describe climate change. The scale of polar ice, so dramatic and so clear from a plane flying at 450 metres (1,500ft) – high enough to appreciate the scope of the ice and low enough to sense its mass – is nearly impossible to fathom when you aren’t sitting at that particular vantage point. But it’s different when you are there, cruising over the ice for hours, with Nasa’s monitors…
Background Little information is available about the geo-economic variations in demographics, management, and outcomes of patients with acute respiratory distress syndrome (ARDS). We aimed to characterise the effect of these geo-economic variations in patients enrolled in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE). Methods LUNG SAFE was done during 4 consecutive weeks in winter, 2014, in a convenience sample of 459 intensive-care units in 50 countries across six continents. Inclusion criteria were admission to a participating intensive-care unit (including transfers) within the enrolment window and receipt of invasive or non-invasive ventilation.…
الجمعة, 26 أيار 2017 19:12

10 INCREDIBLE HEALTH BENEFITS OF FASTING

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Many people observe fasting as a religious obligation but only few know the health benefits it has. Fasting is a good practice, if properly implemented. It promotes elimination of toxins from the body, reduces blood sugar ans fat stores. It promote healthy eating habits and boost immunity. Here are top 10 health benefits you ca derive from fasting. 1. Fasting Promotes detoxification Processed foods contain lots of additives. These additives may become toxins in the body. Some of them promote production of advanced glycation end products (AGEs). Most of these toxins are stored in fats. Fat is burnt during fasting,…
NTRODUCTION Scientists and inventors can combine information from an ever-expanding knowledge base dispersed across documents, experiments, and data (1). The Web of Science (WOS) contains 28.4 million publications, including more than 1.5 million new articles published in 2014 alone, sextupling the 1970 rate. The U.S. Patent and Trademark Office (USPTO) issued 287,831 patents in 2013, quadrupling the 1970 rate. Although more knowledge enables more novel ideas to be combined (2, 3), scientists and inventors have limited time to search through the expanding base (4, 5). As the rate of knowledge expansion grows, but the time to search for new knowledge remains fixed,…
الجمعة, 31 آذار/مارس 2017 15:21

US child-health study rises from ashes of high-profile failure

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Frederica Perera has stocked a dozen freezers with an unusual biological bounty over the past two decades. Inside are vials of umbilical-cord blood, urine and placentas from more than 700 pregnant women and their children from the Washington Heights, Harlem and South Bronx neighbourhoods of New York City. This biobank has proved invaluable in her efforts to understand how urban environments influence children’s health from birth through childhood. Now, Perera’s team is gearing up for another challenge: developing a tool that can test her bank of umbilical-cord blood samples for common pollutants and use the results to predict later impacts…
الإثنين, 20 شباط/فبراير 2017 17:25

Geologists spy an eighth continent: Zealandia

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Beneath the waves in the southwest Pacific Ocean lies a mostly hidden realm — dubbed Zealandia — that deserves to be called a continent, geologists say. Geophysical data suggest that a region spanning 5 million square kilometres, which includes New Zealand and New Caledonia, is a single, intact piece of continental crust and is geologically separate from Australia, a team of scientists from New Zealand, Australia and New Caledonia argue in the March/April issue of GSA Todayhttp://dx.doi.org/10.1130/GSATG321A.1 (2017)." class="ref-link" style="color:rgb(92, 121, 150);text-decoration:none">1. (see 'Hidden crust') “If you could pull the plug on the world’s oceans, then Zealandia would probably long ago…
الثلاثاء, 11 تشرين1/أكتوير 2016 15:39

Carbon Cache

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Near a bank of windows overlooking the mighty Klamath River, Yurok tribal leader Susan Masten proudly displays photo after photo of intricate Yurok baskets and ceremonial caps, part of a cache of priceless cultural artifacts the California tribe has recently reclaimed. Assembled over decades by a non-Yurok art collector, the collection had a hefty price tag. But thanks to income from the innovative forest carbon offset program that The Nature Conservancy helped develop in California, the Yuroks were able to bring these treasures home in 2014.“It’s as if you could hear them saying, ‘Take me home, take me home,’” says…
الأربعاء, 05 تشرين1/أكتوير 2016 10:09

With civilian drone competition, Iran battles against brain drain

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TEHRAN — The 26 drone-building teams descended on the polished, manicured technology park 15 miles east of Tehran with the overflowing enthusiasm of school kids preparing for the Science Olympiad. Their challenge, in a competition sponsored by the fast-growing Digikala company, Iran’s version of Amazon, was to create the best drone for delivering packages. For the drone builders, the prize that day at Pardis Technology Park, Iran’s purpose-built version of Silicon Valley, was 50 million tomans, or about $14,300. But for Iran, the goal was much greater: a step toward providing the country’s whiz-kid youth with the hope that they have a…