Briefs: Medical

Thermal spore exposure vessels (TSEVs) are laboratory containers designed for use in measuring rates of death or survival of microbial spores at elevated temperatures. A major consideration in the design of a...

Briefs: Medical
Enumerating Spore-Forming Bacteria Airborne With Particles

A laboratory method has been conceived to enable the enumeration of:

Cultivable bacteria and bacterial spores that are, variously, airborne by themselves or carried by, parts of, or otherwise associated with, other airborne particles; and Spore-forming bacteria among all of the...
Briefs: Information Technology

A method of sequence detection has been proposed to mitigate the effects of inter-slot interference and inter-symbol interference (both denoted "ISI") in the reception of M-ary...

Briefs: Information Technology

An algorithm searches a star catalog to identify guide stars within the field of view of a telescope or camera. The algorithm is fast: the number of computations needed to perform the...

Briefs: Information Technology
Expectation-Based Control of Noise and Chaos

A proposed approach to control of noise and chaos in dynamic systems would supplement conventional methods. The approach is based on fictitious forces composed of expectations governed by Fokker-Planck or Liouville equations that describe the evolution of the probability densities of the controlled...

Briefs: Physical Sciences
Radio Heating of Lunar Soil To Release Gases

A report proposes the development of a system to collect volatile elements and compounds from Lunar soil for use in supporting habitation and processing into rocket fuel. Prior exploratory missions revealed that H2, He, and N2 are present in Lunar soil and there are some...

Briefs: Physical Sciences
Using Electrostriction To Manipulate Ullage in Microgravity

A report proposes to use electrostriction to manipulate the ullage in a tank containing a dielectric liquid in a microgravitational environment. In the original intended application, the liquid would be a spacecraft propellant and the goal would be to force the ullage (comprising...

Briefs: Information Technology
Equations for Scoring Rules When Data Are Missing

A document presents equations for scoring rules in a diagnostic and/or prognostic artificial-intelligence software system of the rule-based inference- engine type. The equations define a set of metrics that characterize the evaluation of a rule when data required for the antecedence clause(s) of...

Briefs: Electronics & Computers
Pseudorandom Switching for Adding Radar to the AFF Sensor

A document describes the proposed addition of a radar function to the Autonomous Formation Flying Sensor, making possible coarse relative-position control to prevent collisions in the event of failure of one of the spacecraft. According to the proposal, in addition to tracking GPS-like...

Briefs: Photonics/Optics

Holographic retroreflectors that function equivalently to Plossl eyepieces have been developed and used in free-space optical communication systems that utilize laser beams. Plossl eyepieces are well known...

Briefs: Photonics/Optics

A scanning optoelectronic instrument generates the digital equivalent of a three-dimensional (X,Y,Z) map of a surface that spans an area with resolution on the order of 0.005 in....

Briefs: Photonics/Optics

The Matrix Assisted Laser Desorption and Ionization (MALDI) technique in 1987 led to a renewed interest for the nitrogen laser. MALDI allows large and fragile biomolecules to be desorbed and...

Briefs: Photonics/Optics

An electro-optical (E-O) imaging Fourier-transform spectrometer (IFTS), now under development, is a prototype of improved imaging spectrometers to be used for hyperspectral imaging,...

Briefs: Physical Sciences

The figure shows components of a distillation column intended for use as part of a system that produces high-purity liquid oxygen (LOX) from air by distillation. (The column could be...

Briefs: Robotics, Automation & Control

A proposed apparatus would provide or augment cooling or heating of the interior of an automobile in the presence of sunlight. The apparatus could be added to an existing automobile,...

Briefs: Electronics & Computers
Hybrid Terrain Database

A prototype hybrid terrain database is being developed in conjunction with other databases and with hardware and software that constitute subsystems of aerospace cockpit display systems (known in the art as synthetic vision systems) that generate images to increase pilots’ situation awareness and eliminate poor...

Briefs: Information Technology
Power User Interface

Power User Interface 5.0 (PUI) is a system of middleware that is an alternative to the computer program described in the immediately preceding article. Written for PUI enables expedited ordering of data granules on the basis of specific granule-identifying information that the users already know or can assemble. PUI also...

Products

Z Corporation, Burlington, MA, has introduced the ZScanner 700, a handheld, self-positioning 3D scanner that can digitize 3D surfaces in real time. The scanner is part-referenced, orienting itself to the target object, rather...

Products: Robotics, Automation & Control

YET US (Manchester, NH) introduced the XtraDrive® servo system, configured for compatibility with all brushless servo motor technologies. The unit features patented non-linear control technology (NCT) for performance and...

Products: Motion Control

Heidenhain (Schaumburg, IL) expanded its ERA 4000 series of angle encoders with the ERA 4×80, 4×81, and 4×82 versions. The ERA 4x80 is mounted using a centering collar method, with a low profile encoder system. With seven...

Products: Robotics, Automation & Control
Linear-Arc Motor

Applimotion (Loomis, CA) offers the LARC Series of linear-arc motors, a combination of a disk drive voice coil motor and brushless linear motor. The units can be driven by three-phase brushless motor controllers from 24 to 300 volts with speeds ranging from 0.1 to 1000 rpm. Features include axial low profile, with options as low...

Products: Robotics, Automation & Control

H2W Technologies, Inc. (Valencia, CA) released limited angle torque motors (“torquers”) that are single phase, brushless, low profile motors, vacuum compatible to 10^5 torr. Options include kit motors and housed...

Products: Robotics, Automation & Control

Madison Electric Products (Mentor, OH) has released the Model HPRT C-Face Magnetic Ring Encoder, compatible with AC vector drive applications. Standard features include digital square wave quadrature-signal (064, 128,...

Products: Motion Control

Helical Products Co. (Santa Maria, CA) introduced single-piece, flexible couplings to compensate for mechanical movement irregularities. The units require neither maintenance nor lubrication; they offer constant rotational...

Products: Motion Control

The plug-in General Purpose Relays from c3controls (Beaver, PA) are designed for use in motors and motion control devices. Base configurations come in Octal, Square, Flange Mounted, and Miniature Square, with pin and blade...

Products: Robotics, Automation & Control

NORD Gear Corp (Waunakee, WI) offers the NORDAC SK 500E and 520E AC vector frequency inverters. Both feature high torque, rapid response, and wide spread range for extended power outputs ranging from 0.25 kW to 7.5 kW....

Products: Motion Control

Oilgear (Milwaukee, WI) introduced a contaminant-resistant PVWH open loop, axial piston pump. Ten sizes are available, and reach a pressure of 5,000 psi. With sleeve bearings that run on wet film and are pressure lubricated...

Products: Robotics, Automation & Control

TrustAutomation (San Luis Obispo, CA) has released the TA600 4-axis stand-alone motion controller for use with brushed, brushless, and stepper motor drives, featuring dual processors, a DSP processor, and a high-speed...

Products: Motion Control

Copley Controls (Canton, MA) introduced the Model 800-1514 dual-axis servo amplifier for current (torque) control of brushless servomotors. The unit accepts encoder and Hall feedback data from a range of servo motor types....

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