Showing posts with label iptek. Show all posts
Showing posts with label iptek. Show all posts


For people with middle-aged and elderly, the use of the internet help improve brain power, so the researchers suggest. a team from the University of California Los Angeles states that "searching" the web can stimulate the brain centers that control decision making and complex thoughts. The researchers also say, this can even help to "Fight" psikological changes associated with age that causes decreased brain performance. The results of this study are listed in the American Journal of Geriatric Psychiatry.

As age increases, a number of changes in the brain also occur, including shrinkage and reduction in cell activity that can affect the brain's performance. Opinions that have been commonly known is that some activities can keep the activity / brain works, such as filling a crossword puzzle. Recent studies show that surfing the web is part of these beneficial activities. Lead researcher Professor Gary Small--​​says: "The results are encouraging and led to computer technologies that have a psychological impact and potential benefits for middle-aged and elderly people. searching on the Internet involves a complicated brain activity, which may help exercise and improve brain function. "The latest research was conducted on 24 volunteers aged between 55 and 76. Half of them are Internet users and the rest do not.

Each volunteer was treated brain scans while they perform web searches and book reading tasks. Both types of task produced evidence of significant activity of the brain controlling language, reading, memory and visual abilities. Although, searching the Web to produce significant additional activity in separate parts of the brain that control decision making and complex thought, but this only to people who are users of the web / internet only. The researchers said that compared to regular reading, the Internet asking people to vote on what should be clicked to obtain relevant information. However, they stated that new entrants to the web do not have the strategies needed to successfully perform a search the web / internet successfully.
Professor Smith said: "in simple, everyday task like searching on the Internet can increase the" turnover "of the brain in adults, and shows that our brains are sensitive and can continue to learn as we grow older. "

Rebecca Wood, chief executive of the Alzheimer's Research Trust, said: "This interesting study complements the findings of previous studies which suggest that people of middle age and elderly can reduce the risk of stagnation of the brain / mind (dementia) by taking part in routine activities that mentally stimulating. User web / internet is often called "silver surfers", do this well. Frequency of social interaction, exercise regularly and maintain a balanced diet can also reduce the risk of stagnation of the brain / mind (dementia). "

Dr Susanne Sorensen, Head of Research at the Alzheimer's Society, said: "searching into a positive message for people to stay active, but still very little real evidence that keeping the brain with puzzles, games or other activities to develop health cognitive and reduce the risk of dementia ".
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Formula futuristik dimasukkan di antara lembaran Kevlar. Hasilnya, menakjubkan.
Sebuah temuan baru revolusioner dalam dunia militer sedang dikembangkan di Inggris. Bentuknya, baju perang antipeluru canggih yang diharapkan bisa menyelamatkan jiwa para serdadu di medang perang.
Bukan baju perang biasa, alih-alih dibuat dari material padat, ini terbuat dari sejenis cairan.
Para ilmuwan telah menciptakan zat sangat rahasia yang mampu menyerap kekuatan tembakan lawan atau pecahan peluru. Zat ini akan menebal dan mengeras saat peluru menyentuh sasaran.


Cara kerja baju perang konvensional berbahan Kevlar (Daily Mail)


Cara kerja baju perang 'cair' (Daily Mail)

Para pejabat pertahanan Inggris meyakini, baju ini akan lebih ringan, fleksibel, dan menawarkan perlindungan yang lebih besar untuk prajurit di medan perang.

"Baju perang cair" berteknologi tinggi ini dipamerkan dalam sebuah konferensi militer di London, berdampingan dengan berbagai gadget ala James Bond.

Apa bedanya dengan baju perang biasa?

Para peneliti telah memasukkan formula futuristik, cairan yang bisa menebal, di antara lembaran Kevlar -- serat fiber sintetis bahan rompi antipeluru yang kekuatannya lima kali lipat dari baja -- untuk menghasilkan baju perang super.

Meski disebut cair, molekul rahasia yang dikembangkan ilmuwan berbentuk mirip custard, semacam puding, yang relatif solid dan lebih tebal dari cairan biasa.

Dengan bahan ini, para ahli militer mengatakan, berat baju perang yang dihasilkan hanya setengah dari berat rompi antipeluru biasa, yang memungkinkan para prajurit melakukan manuver lebih bebas. Saat ini prajurit mengenakan pelindung tubuh berat yang terbuat dari piring keramik dan lapisan Kevlar. Selain berat, baju itu tentu saja tak nyaman di zona perang panas seperti Afghanistan yang bisa mencapai 50 derajat Celcius.

Teknologi ini dikembangkan oleh tim ilmuwan dan perusahaan peralatan keamanan BAe System di Filton, Bristol.

Para ilmuwan menguji kedigdayaan material itu dengan cara menembakkan peluru dari pistol kaliber 9 milimeter ke 31 lapis Kevlar, dibandingkan dengan 10 lapis Kevlar yang dikombinasikan dengan zat super itu.

Hasilnya, saat baju pelindung cair terkena proyektil, dampak itu disebar di wilayah yang lebih luas. Ini akan mengurangi kemungkinan tentara terluka atau terbunuh oleh kekuatan tembakan peluru karena tidak terkonsentrasi pada satu wilayah kecil.

Sementara, baju pelindung tradisional memiliki efek samping: menyebabkan memar, tulang rusuk retak, dan bahkan kerusakan organ dalam.

BAE Systems akan mengembangkan baju perng canggih ini sehingga bisa menahan kekuatan senjata yang lebih berat, termasuk senapan serbu AK47 digunakan oleh Taliban.

Perusahaan pembuatnya yakin tentara bisa menggunakan rompi pelindung baru dalam dua tahun. "Ada cukup banyak modal dari Departemen Pertahanan. Kami harap ini segera bisa dipakai serdadu di garis depan," kata Nick Haigh, juru bicara BAe Systems, seperti dimuat Daily Mail, 13 Januari 2011.

"Rompi pelindung tradisional Kevlar sangat efektif tetapi terlalu berat dan besar. Jika kita mampu mengurangi beban berat bagi tentara, kerja mereka akan lebih efektif. "

Sumber : http://anehunikgokil.blogspot.com
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