... Title : MEMS-Based Microanalytical System for Dielectrophoresis Studies of Biological Macromolecules. Descriptive Note : Master's thesis,. ...

This thesis describes a body of work specifically addressing the design and fabrication of a MEMS-based microanalytical system capable of studying the dielectrophoresis of biological macromolecules such as DNA and bovine serum albumin (BSA). Through a pro...

A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic s...

A micro-analytical platform for performing electrophoresis-based immunoassays was developed by integrating photopolymerized cross-linked polyacrylamide gels within a microfluidic device. The microfluidic immunoassays are performed by gel electrophoretic s...

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This report describes the development of an agent-based microanalytic simulation model of the US economy. The microsimulation model capitalizes on recent technological advances in evolutionary learning and parallel computing. Results are reported for a test problem that was run using the model. The test results demonstrate the model`s ability to predict ...

The widespread occurrence of sexual reproduction despite the two-fold disadvantage of producing males, is still an unsolved mystery in evolutionary biology. One explanatory theory, called the "Red Queen" hypothesis, states that sex is an adaptation to escape from parasites. A more recent hypothesis, the mate selection hypothesis, assumes that non-random mating, possible only with sex, ...

The purpose of the current investigation was to establish the validity of microanalytic measures used to assess students' self-regulation of an academic science task, not only in terms of immediate achievement, but also in terms of a well-established "person" measure of self-regulated learning. Person measures are designed to capture enduring characteristics of learners that ...

Fluorine (F) is a volatile constituent of magmas and hydrous minerals, and trace amounts of F are incorporated into nominally anhydrous minerals such as olivine and clinopyroxene. Microanalytical techniques are routinely used to measure trace amounts of F at both high sensitivity and high spatial resolution in glasses and crystals. However, there are few well-established F ...

Theoretical investigations of plasma-based accelerators and other advanced accelerator concepts. The focus of the work was on the development of plasma based and structure based accelerating concepts, including laser-plasma, plasma channel, and microwave driven plasma ...

The present embodiment describes a laminar-mixing embodiment that utilizes simple, three-dimensional injection. Also described is the use of the embodiment in combination with wide and shallow sections of channel to affect rapid mixing in microanalytical systems. The shallow channel sections are constructed using all planar micromachining techniques, including those ...

There is a need to develop reliable portable analytical instruments for real-time monitoring of trace metals, such as lead (Pb) utilizing readily available non-invasive fluids like saliva. To interpret saliva results, an understanding of the pharmacokinetics of Pb secretion into the saliva is needed. A portable microfluidics/electrochemical device was developed for the rapid analysis of Pb ...

... ACCELERATION TOLERANCE, COMPUTER PROGRAMS, DATA BASES, MATHEMATICAL MODELS, STATISTICAL INFERENCE, LOADS ...

Tables for acceleration terminology equivalents based on human and vehicle angular and linear motion

The interfacing of an energy dispersive x-ray spectrometer (EDS) to an HVEM has been suggested during the last few years as a means by which the mass sensitivity of x-ray analysis in a TEM can be increased. The prediction of higher sensitivity is related to the anisotropic distribution of continuum radiation generated by high energy electron excitation of a thin sample. Depending on the geometry, ...

We demonstrate how manufacture of miniaturized biosensors, fluidic platforms, drug delivery systems and other micro biomedical devices is relying more and more on non-Si micromanufacturing techniques. The new methodologies are hybrid in nature and merge IC fabrication methods (e.g. lithography) with more traditional manufacturing (e.g. lamination, plastic molding and electroplating). These ...

A version of accelerating complex for high energy heavy ions is proposed on the base of a heavy ion collective accelerator. Considerations are presented as to the construction of the complex which is capable of accelerating uranium atoms up to 250 MeV/nuc...

... OF STRESS CORROSION CRACKING IN POWER PLANT HEAT ... WITH LIGHT MICROSCOPY, FRACTOGRAPHY, RESIDUAL STRESS OR OTHER ...

Language: English ...

The development of 3rd generation synchrotron radiation sources like European Synchrotron Radiation Facility (ESRF) in parallel with recent advances in the technology of X-ray microfocusing elements like Kirkpatrick-Baez (KB) mirrors, diffractive (Fresnel zone plates, FZP) and refractive (compound refractive lenses, CRL) optics, makes it possible to use X-ray microscopy techniques with high energy ...

Modern ideas concerning electrical transport in electrolyte solutions and capillary isotachophoresis � one of the microanalytical methods based on the different mobilities of ions in electrolyte solutions � are briefly considered. The isotachophoretic methods are classified in terms of the positions of the solutions and the directions of motion of the ...

A microfabricated mass-sensitive chemical preconcentrator actively measures the mass of a sample on an acoustic microbalance during the collection process. The microbalance comprises a chemically sensitive interface for collecting the sample thereon and an acoustic-based physical transducer that provides an electrical output that is proportional to the mass of the collected ...

We have designed and built an improved, dedicated analytical scanning transmission electron microscope (STEM). A novel feature of this microscope is a magnetic lens above the accelerating gun, allowing the specimen probe to achieve very high current densities while retaining the high spatial resolution of the STEM. Integrated with this microscope, we have also implemented an ...

Sandia National Laboratories has a long tradition of technology development for national security applications. In recent years, significant effort has been focused on micro-analytical systems - handheld, miniature, or portable instruments built around microfabricated components. Many of these systems include microsensor concepts and target detection and analysis of chemical ...

A methodical investigation and measurement of human dynamic response to impact acceleration was conducted. Linear accelerations were measured on the top of the head, at the mouth, and at the base of the neck. Angular velocity was also measured at the base...

The importance of particle acceleration may be judged from the number of applications which require some sort of accelerated beam. In addition to accelerator-based high energy physics research, non-academic applications include medical imaging and treatme...

This paper discusses some concepts of future accelerators such as free electron lasers, two beam accelerator; and plasma-based adiabatic compressor. 12 refs., 10 figs., 5 tabs. (LSP)

Oak Ridge National Laboratory Physics Division The Oak Ridge Electron Linear Accelerator Pulsed Neutron Source The ORELA is a powerful electron accelerator-based neutron source...

reasonable amount of time, an accelerated life test at high temperatures is used . This type of accelerated test is based on the observation that ...

This report contains the papers from the 1990 linear accelerator conference. These papers are processed separately on the data base. (LSP)

... Accession Number : AD0743237. Title : Drift of a Gyro Linear Acceleration Integrator Mounted on a Vibrating Base,. Corporate ...

reasonable amount of time, an accelerated life test at high temperatures is used . This type of accelerated test is based on the observation that ...

This activity is a indoor lab where student gather data about centripital acceleration and write up a lab based on their findings.

There is a need to develop reliable portable analytical systems for on-site and real-time biomonitoring of lead (Pb) from both occupational and environmental exposures. Saliva is an appealing matrix since it is easily obtainable, and therefore a potential substitute for blood since there is a reasonably good correlation between Pb levels in both blood and saliva. The ...

The acceleration efficiency of a laser driven linear accelerator is analyzed. The laser power, loss factor and impedances determine the maximum charge that can be accelerated and the efficiency of that acceleration. The accelerator structure can be incorporated into a laser cavity. The equation ...

Within the frame of an ongoing project to develop a folded Tandem-Electrostatic-Quadrupole (TESQ) accelerator facility for Accelerator-Based Boron Neutron Capture Therapy (AB-BNCT), we discuss here the electrostatic design of the machine, including the accelerator tubes with electrostatic quadrupoles and the simulations for the ...

Laser-driven acceleration holds great promise for significantly improving accelerating gradient. However, scaling the conventional process of structure-based acceleration in vacuum down to opticalerent kind of structure. We require an optical waveguide th...

Accelerator systems capable of driving inertial fusion targets are described. They are based on linear induction accelerator technology coupled with new methods of beam transport using electron neutralization of ion space charge. The resulting accelerator...

Argonne National Laboratory (ANL) is collaborating with Louisiana State University (LSU) in constructing a synchrotron x-ray micro-analytical beamline at the Center for Advanced Microstructures and Devices (CAMD) in Baton Rouge. This project grew from ear...

1. Modular Design of FPGA-Based. Accelerators in C. Walid Najjar and Jason Villarreal. Computer Science & Engineering, University of California Riverside ...

Jan 22, 2011 ... Title: Feasibility Study of MEMS-Based Accelerator Grid Systems for Micro-Ion Engines: Electric Breakdown Characteristics ...

... Title : Edwards Air Force Base Accelerates Flight Test Data Analysis Using MATLAB(Registered) and MathWorks(Trademark). ...

Laser-induced fluorescence is an extremely sensitive method for detection in chemical separations. In addition, it is well-suited to detection in small volumes, and as such is widely used for capillary electrophoresis and microchip-based separations. This review explores the detailed instrumental conditions required for sub-zeptomole, sub-picomolar detection limits. The key to ...

The incineration of MSW in fluidized beds is a commonly applied waste management practice. The composition of the ashes produced in a fluidized bed boiler has important environmental implications as potentially toxic trace elements may be associated with ash particles and it is therefore essential to determine the mechanisms controlling the association of trace elements to ash particles, including ...

The incineration of MSW in fluidized beds is a commonly applied waste management practice. The composition of the ashes produced in a fluidized bed boiler has important environmental implications as potentially toxic trace elements may be associated with ash particles and it is therefore essential to determine the mechanisms controlling the association of trace elements to ash particles, including ...

... manufacture of catalytic converters in cars and other air-pollution-abatement processes. The new microanalytical methods that will be ... ...

Following a brief overview of NASA s Microgravity Materials Science programs, specific examples will

... Zeiss microscope (both equipped with a four-diode, semiconductor BSE detector and a Link ISIS microanalytical EDS ... ...

... Study of Secondary Precipitation in RSR 143 Using Atom Probe Field Ion Microscopy and Analytical Transmission Electron Microscopy,. ...

Plasma-based accelerators have the ability to sustain extremely large accelerating gradients, with possible high-energy physics applications. This dissertation further develops the theory of plasma-based accelerators by addressing three topics: the performance of a hollow plasma channel as an ...

An Accelerator-based Neutron Generator is described that consists of a 30-MeV deuteron linear accelerator using a flowing liquid lithium target. With a continuous deuteron current of 100 milliamperes, a source intensity of more than 10 exp 16 neutrons per...

Estimating Vehicle Fuel Consumption and Emissions Based on Instantaneous Speed and Acceleration regression models that predict hot stabilized vehicle fuel consumption and emission rates for light are instantaneous vehicle speed and acceleration measurements. The energy and emission models described

An increase in fibrosarcomas in a biopsy population of cats in the Pennsylvania area appears to be related to the increased vaccination of cats following enactment of a mandatory rabies vaccination law. The majority of fibrosarcomas arose in sites routinely used by veterinarians for vaccination, and 42 of 198 tumors were surrounded by lymphocytes and macrophages containing foreign material ...

The chemical composition and size distribution of representative flyashes are being measured by appropriate microanalytical techniques to provide information required. Measurements of the infrared optical constants (i.e., the complex refractive index m = n - ik) of synthetic slags are being made as a function of wavelength and temperature for controlled compositions. ...

The chemical composition and size distribution of representative flyashes are being measured by appropriate microanalytical techniques to provide information required. Measurements of the infrared optical constants (i.e., the complex refractive index m = n - ik) of synthetic slags are being made as a function of wavelength and temperature for controlled compositions. ...

A strategy for rapidly printing three-dimensional (3D) microscopic replicas using multiphoton lithography directed by a dynamic electronic mask is reported. Morphological descriptions of 3D structures are encoded as stacks of 2D slices created from tomographic and computer-designed instruction sets. In this manner, digital images serve as input for a sequence of reflective photomasks on a digital ...

An ultracentrifuge based on the air turbine of a dental drill attains 400,000-600,000 rpm and a centrifugal force 2 to 3 million �g. It is used for the examination of cell suspentions and homogenates and can be applied to macromolecular solutions. Microcuvettes with volumes ranging from less than 1 mm3 to 0.001 mm3 (suitable for single cells) are of disk and square capillary ...

Oil paintings are complex hybrid materials, made of organic binders associated with inorganic minerals, susceptible to evolving over centuries. In particular, interactions of oil with lead compounds may give rise to the formation of lead soap aggregates, so-called protrusions. This phenomenon is studied here via X-ray and FTIR micro-analysis of an ancient painting dated from 1610. In complement, ...

The utility of the graphite indicating electrode in stationary and rotating electrode voltammetry, chronopotentiometry, and amperometric titration is reviewed on the bases of existing literature and new data. The effects of experimental conditions on the three principal operational criteria of a microanalytical method in terms of performance, ...

This paper describes the synthesis and characterization of a metal-polymer hybrid material formed by the combination of palladium nanoparticles and poly-o-phenylenediamine (poly-PDA). The preparation technique is based on an in situ, one-pot chemical synthesis route using palladium acetate and o-phenylenediamine as precursors. The composite material was characterized by ...

English is unquestionably the world language of academia--yet its most notable characteristic, being predominantly used by non-native speakers, has not seriously been taken on board in ESP descriptive studies. The project English as an academic lingua franca (ELFA) based at the University of Helsinki investigates academic discourses, branching out into two parts: one is the ...

The paper examines how young people describe experiences of bullying when participating in an Internet community dedicated to young people experiencing mental health problems. The micro-analytic focus demonstrates how young people construct their identities in relation to their telling about their experiences of being victims of bullying, reporting on two distinct ways that ...