development of a microbial fuel cell
(MFC) that can coax bacteria into producing four times as much hydrogen
than generally can be created by fermentation alone. And the process is
not limited to carbohydrate-based biomass (plant materials and animal
waste). It can even be used to process
and clean wastewater.
The key is breaking the “
fermentation barrier” by giving the bacteria a
0.25-V jolt, persuading them to convert acetic acid into carbon dioxide
and hydrogen. When the bacteria eat
biomass, they transfer electrons to an
anode. They also release protons
(hydrogen atoms stripped of their
electrons), which go into solution.
The electrons on the anode
migrate via a wire to the cathode, where
they are electrochemically assisted to
combine with the protons and produce
hydrogen gas. According to Bruce
Logan, inventor of the MFC, “This new
process demonstrates, for the first time,
that there is real potential to capture
hydrogen for fuel from renewable
sources for clean transportation.”
Essential Tremor Foundation, some 10
million people in the United States
alone are affected by “essential
tremor,” the most common form of
hand tremors. Their involuntary hand
movements make it difficult to operate
a PC using a standard mouse. The
mouse adapter filters out the shaking
movements much as the image stabilizing systems used in some camera
lenses stabilize the image. The device
is designed to work with any PC and
operating system, and no additional
software is required. The adapter can
be switched on or off and adjusted for
the tremor severity. It can also be set to
filter out unintended multiple clicking
on the mouse caused by a shaking finger. Prices run at $99.00 plus shipping.
Mouse Adapter for Disabled
Thanks to their
of Power and
are today at the heart of many of the
world’s most demanding Industrial,
Military and Research Robots, and other
innovative Motion Control applications.
The Assistive Mouse Adapter. Photo courtesy
- RS232, RC, or Analog input
- Dual channel output up to 140A
- Optical Encoder Inputs
- Intelligent Current Limiting
- Thermally Protected
- Field Upgradable Firmware
- Enclosed and Board-Level versions
- and many more advanced features ...
Amps Features Price
of International Business Machines Corp.
USB Speaker System
TRITTON Technologies has introduced an external, portable USB-powered 2.1 speaker system called
“Sound Bite.” This self-contained audio
device employs two aluminum micro-drivers and a subwoofer, and it features
a built-in sound chip that acts as a second sound device or allows older notebooks and systems without a sound
card to produce high-quality sound.
The system needs no batteries or
power adapters, and it features two
28-mm satellite speakers and one 52-
mm subwoofer. It handles 5 W of input
power with a maximum output power of
1.2 W + 1.2 W and is plug-and-play and
compatible with PCs running Windows
98SE/ME/2000/XP and Macs running
OS 9 or later with USB audio support.
Listing at $49.95, Sound Bite is available from major online retailers.
One-Inch Drive Stores 5 GB
Earlier this year, IBM (www.ibm.
com) announced the invention of a
mouse adapter that enables people
who suffer from hand tremors to eliminate excessive cursor movement, thereby allowing more normal use of a personal computer. The design has been
licensed to Britain’s Montrose Secam
Ltd., which is now selling the unit online
( http://montrosesecam.com) and
According to the International
Seagate’s USB 2.0 Pocket Hard Drive.
AX1500 2x30A B $275
AX3500 2x60A O-R-B $395
AX2550 2x120A A $495
AX2550HE 2x140A A $645
AX2850 2x120A O-A $620
AX2850HE 2x140A O-A $770
A=Aluminum Extrusion, B=Board-Level, O=Optical Encoder In,
R= RC outputs. Qty1 price. Contact us for OEM Qty prices
Photo courtesy of Seagate Technologies.
If you’re looking for an easily trans-portable storage device, check out
Seagate’s USB 2.0 Pocket Hard Drive,
8180 E.Del Plomo Dr.
Scottsdale AZ USA 85258
(602)617-3931 - firstname.lastname@example.org
Circle #42 on the Reader Service Card.