Author Archives: biomedin

Switchable Nanostructures Made with DNA-BIOMEDICAL NEWS

Opens possibility of responsive ‘nanomachines’ for applications in energy and data storage

Scientists at the U.S. Department of Energy’s Brookhaven National Laboratory have found a new way to use a synthetic form of DNA to control the assembly of nanoparticles — this time resulting in switchable, three-dimensional and small-cluster structures that might be useful, for example, as biosensors, in solar cells, and as new materials for data storage. The work is described in Nature Nanotechnology, published online December 20, 2009.

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LECTURE NOTES ON BIOMEDICAL INSTRUMENTATION

YOU CAN DOWNLOAD ALL THE NOTES RELATED TO BIOMEDICAL INSTRUMENTATION FROM HERE

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Biomedical Signal Processing Toolbox-BIOMEDICAL SIGNAL ANALYSIS

Abstract.

This article describes a biomedical signal processing (BSP) toolbox for the analysis
of physiologic signals. The BSP toolbox is designed to enable researchers to conduct
preliminary analysis of physiologic time series, such as the electrocardiogram (ECG),
intracranial pressure (ICP), arterial blood pressure (ABP), and oxygen saturation (SpO2).
The toolbox includes detection algorithms for the ECG and pressure waveforms, spectral
analysis, nonlinear filtering, multi-signal analysis, and nonstationary signal visualization.
The following sections discuss the functionality of this toolbox and provide examples of its
application.

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Head massaging hat has been made

Head massaging hat certifies your dorkiness

Massages are great, but I generally prefer the touch of another human over a machine.

Now Osim, the folks who brought us the massaging MP3 player, have one upped their earlier efforts with the uCrown 2 head massager. Combining air pressure technology, vibration massage, magnetic therapy, gentle heat, and even some built in speakers so you can play some relaxing Yanni music, the uCrown 2 is designed to relieve stress while relaxing your muscles. My only concern is that the benefits will be outweighed by the embarrassment of your family pointing and laughing at you.

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Biomedical scientists give man his sight back

: Image via Wikipedia

Stem cell research carried out by biomedical scientists has enabled a man who was left partially sighted after intervening in a fight to recover his vision.

In 1994, Russell Turnbull lost most of the sight of his right eye after being sprayed in the face with ammonia while trying to break up an altercation on a bus, the Times reports.

The 38-year-old was left with pain, extreme sensitivity to light and cloudy vision.

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DNA SEQUENCING BECOMES FASTER-SCIENCE DAILY

Boston University biomedical engineers have devised a method for making future genome sequencing faster and cheaper by dramatically reducing the amount of DNA required, thus eliminating the expensive, time-consuming and error-prone step of DNA amplification.

In a study published in the Dec. 20 online edition of Nature Nanotechnology, a team led by Boston University Biomedical Engineering Associate Professor Amit Meller details pioneering work in detecting DNA molecules as they pass through silicon nanopores. The technique uses electrical fields to feed long strands of DNA through four-nanometer-wide pores, much like threading a needle. The method uses sensitive electrical current measurements to detect single DNA molecules as they pass through the nanopores.

“The current study shows that we can detect a much smaller amount of DNA sample than previously reported,” said Meller. “When people start to implement genome sequencing or genome profiling using nanopores, they could use our nanopore capture approach to greatly reduce the number of copies used in those measurements.”

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