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# catatan teknis, sejak 2001

Tes Darah P-tau217 untuk Prediksi Risiko Alzheimer

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Sebuah studi internasional menggabungkan data dari enam observasi untuk mengukur biomarker p-tau217 dalam darah hampir 2.700 lansia sehat. Hasilnya menunjukkan tingkat biomarker yang sangat tinggi berkorelasi dengan peluang 38 persen mengalami penurunan kognitif dalam lima tahun dan 78 persen dalam sepuluh tahun, terlepas dari faktor genetik APOE4 atau plak amyloid-beta. Protein ini terbukti efektif memprediksi risiko penurunan fungsi kognitif di masa depan secara independen. Meskipun cakupan metodologisnya mengesankan, utilitas praktisnya saat ini sangat minim bagi orang yang datang ke klinik. Tidak ada perawatan pencegahan yang disetujui untuk mengubah perjalanan penyakit pada orang tanpa gejala, sehingga hasil positif tidak menawarkan tindakan medis selain saran gaya hidup standar. Ini adalah kemajuan ilmiah yang nyata, tetapi mendahului perangkat terapeutik kita saat ini. sumber: sciencedaily.com/261029072142.htm my other side: setyadi.com
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IBM New Memory Technology Looks Promising

2006-12-12 · #Gadget #Kliping

New type of memory chip developed by a team lead by IBM sould make flash memory a thing of the past.
Posted Dec 11, 2006, 5:32 PM ET

New type of memory chip developed by a team lead by IBM sould make flash memory a thing of the past.

A team of scientists from IBM, Macronix and Qimonda have unveiled a prototype computer memory with the potential to replace the flash memory chips now widely used in computers, digital cameras, portable music players and other consumer electronics.

This research gives credence to the concept of "phase-change" memory, which appears to be much faster and can be made much smaller than flash. The prototype phase-change memory device operated more than 500 times faster than flash while using less than one-half the power to write data into a cell. Plus, the device's cross-section is only 3 by 20 nanometers, far smaller than flash can be built today and equivalent to the industry's chip-making capabilities targeted for 2015.

Dr. T. C. Chen, Vice President, Science & Technology, IBM Research said that the results of the research dramatically demonstrate that phase-change memory has a very bright future. Chen further stated that "Many expect flash memory to encounter significant scaling limitations in the near future. Today we unveil a new phase-change memory material that has high performance even in an extremely small volume. This should ultimately lead to phase-change memories that will be very attractive for many applications." This type of non-volatile flash memory does not need electrical power to retain it's information.

source: gameshout

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