Simple analysis methods and field data are the key to pinpointing causes of and solutions to distillation equipment operating problems. The first step in trouble-shooting common field problems is to gather accurate field data and thoroughly analyze the existing operation ...

... and provides a more accurate representation of the atom-field ... the Townes-Merritt effect agrees with the Heisenberg operator approach presented. ...

The Bureau of Mines Helium Field Operations has developed a simple and accurate method for calculating the viscosity of gas mixtures. Only the composition of the mixture and the molecular weights and viscosities of the pure components in the mixture are r...

A modification to the proportional chamber design makes it possible to achieve 5{mu}m spatial resolution in particle tracking. Achieving this requires knowing exactly what the electric field is in the chamber, and simple approximations to the field are not accurate enough. The operation of the chamber and ...

The emphasis on determining the ecological impacts of hazardous substances on coastal and estuarine ecosystems requires the use of appropriate methods and procedures to obtain accurate and comparable data. he methods and procedures presented in this document have been field-teste...

Several techniques are being developed and evaluated for Nowcasting (0-30 minute lead time) cloud and precipitation fields. Accurate forecasts of these fields are needed to support general and air terminal operations as well as to predict periods of micro...

The results reported show that far-field antenna patterns determined on the near-field range are as accurate as those determined on a far-field range. The patterns of a single plane, monopulse antenna, operated at 5.45 GHz were measured on a near-field ra...

In an effort to accurately obtain field measurements and sample collections of wet deposition and the dryfall and/or dry deposition, the same type of wet/dry sampler must be used. In addition, the field operators must be carefully trained in the use of the equipment and recording methods as well as sample handling ...

We present a numerical method based on the generalized pseudospectral discretization in prolate spheroidal coordinates and split-operator time propagation. The method has been applied for the study of multiphoton processes of H+2 and N2 diatomic molecules in intense laser fields. It proves very accurate while using only moderate ...

The U.S. Department of Energy and HIS Energy tested a web-based field data collection service, FieldDIRECT, at NPR-3. FieldDIRECT provided a way to digitally collect oil and gas data from the field, transfer it quickly, accurately and securely via the Internet, and utilize it immediately to ...

The direct (d) and quadrature (q) components of flux, as sensed by flux sensors or determined from voltage and current measurements in a direct field orientation scheme, are processed rapidly and accurately to provide flux amplitude and angular position values for use by the vector rotator of a universal field-oriented (UFO) ...

The direct (d) and quadrature (q) components of flux, as sensed by flux sensors or determined from voltage and current measurements in a direct field orientation scheme, are processed rapidly and accurately to provide flux amplitude and angular position values for use by the vector rotator of a universal field-oriented (UFO) ...

The adoption of a close fitting field-shaping coil system in tokamaks facilitates accurate plasma position and shape control for a broad range of plasma dynamics. This approach leads to minimization of the plasma-wall interaction, permitting low q operation of the tokamak discharge.

The objective of this study is to develop a standard cone-pushed Pencil Pressure Meter (PPMT) test method while automating the PPMT to enable the field operators to more rapidly and accurately conduct the standardized tests for analysis and design of late...

This paper discusses the possible use of a thin conducting shell to achieve accurate active plasma position control. This is important for minimizing plasma-wall interactions. 7 refs., 4 figs. (LSP)

The use of magnetic fields to control and steer assistive and operative devices is increasing in minimally invasive surgical applications. The design of the magnetic link between an external permanent magnet, maneuvered by an industrial robot, and a robotic laparoscopic camera was investigated in this paper, with the objective to obtain ...

It has been suggested that to obtain accurate data for trace metal analysis of drinking water, immediate acidification at the time of collection is necessary. However, because of problems encountered by EPA in field operations and epidemiology studies, further investigation into ...

Persistence of nonindigenous microorganisms released onto soils or into natural environments can have a significant impact on Department of Defense (DoD) operations. An understanding of competition among various microbial communities is necessary to accur...

A LORAC system of navigation has been established in the Monterey Bay area and is intended for use in the field of ocean sciences research. It operates on a phase comparison principle and provides highly accurate navigational fixes without complex timing ...

... Accession Number : ADA534986. Title : Accurate Modeling of Ionospheric Electromagnetic Fields Generated by a Low Altitude VLF Transmitter. ...

The guide will help with complying with the new reporting and recordkeeping requirements of the asbestos National Emission Standards for Hazardous Air Pollutants (NESHAP). The specific responsibilities of waste generators, transporters and waste disposal site operators are addressed, as well as detailed explanations of how to complete the new forms ...

Autonomous beam alignment for coherent Doppler lidar requires accurate information about optical misalignment and optical aberrations. A multielement heterodyne detector provides the required information without a loss in overall system performance. The effects of statistical variations from the random backscattered field (speckle ...

The Gas Research Institute has implemented a field research program to learn more about the hydraulic fracturing process. In order to insure accurate and reliable data were collected for analysis, the Mobile Testing and Control (T&C) Facility was built. T...

reconstruction of the operating field for image overlay in 3D-endoscopic surgery. IEEE and ACM International calibration of actuated stereoscopic endoscope for overlay in robot assisted surgery. In: Takeyoshi D, KikinisA practical approach towards accurate dense 3D depth recovery for robotic laparoscopic surgery

A type of cryogenic SQUID (superconducting quantum interference device) magnetometer was designed for geomagnetic measurements. Field tests of the instrument including comparisons to observatory variometers, a rubidium magnetometer, an induction loop, and a fluxgate magnetometer showed the new cryogenic systems to be reliable, accurate, portable and simple ...

Field studies were conducted to determine if laboratory protocols accurately predict shrimp mortality under field conditions. Fenthion, a mosquitocide, was applied to coastal marshes in several truck-mounted ultra-low volume (ULV) adulticide operations, and by direct application ...

There is a strong need for portable radiometric instrumentation that can both accurately confirm the presence of nuclear materials and allow isotopic analysis of radionuclides in the field. To fulfill this need the Safeguards Technology Program at LLNL has developed a hand-held, non-cryogenic, low-power gamma-ray and x-ray measurements and analysis ...

The magnetic field is the easiest tool for determining the momentum of a particle through its trajectory and, the more accurate the knowledge of the magnetic field, the more accurate the particle momentum determination. This simple fact explains why more and more particle detectors have been equipped with ...

The gyrokinetic linearized exact Fokker-Planck collision operator is obtained in a form suitable for plasma gyrokinetic equations, for arbitrary mass ratio. The linearized Fokker-Planck operator includes both the test-particle and field-particle contributions, and automatically conserves particles, momentum, and energy, while ensuring ...

The gyrokinetic linearized exact Fokker-Planck collision operator is obtained in a form suitable for plasma gyrokinetic equations, for arbitrary mass ratio. The linearized Fokker-Planck operator includes both the test-particle and field-particle contributions, and automatically conserves particles, momentum, and energy, while ensuring ...

Magsat, designed for making measurements of the geomagnetic vector field, is evaluated. For accurate

GPM Gas Corp., Houston, a subsidiary of Phillips Petroleum Co., has implemented a field automation control system (FACS) that allows company operators remotely to monitor natural-gas operations in GPM's New Mexico region. The system has helped improve operating efficiencies and reduce staffing. ...

The modern operator interface is a channel of communication between operators and the plant that, ideally, provides them with information necessary to keep the plant running at maximum efficiency. Advances in automation technology have increased information flow from the field to the screen. New and improved Supervisory Control and ...

The paper describes a precision insolation instrument - the Mark 3 Kendall Radiometer - developed for field survey work and for use as a calibration transfer standard. The instrument, which can be used to make accurate measurements of solar irradiance, has a windowless black cavity receptor mounted in a massive heat sink and has equal sensitivity to ...

A nonferromagnetic linear variable differential transformer for accurately measuring mechanical displacements in the presence of high magnetic fields is provided. The device utilizes a movable primary coil inside a fixed secondary coil that consists of two series-opposed windings. Operation is such that the secondary output voltage is ...

... Title : Development of a Highly Efficient and Accurate Wind-Wave Simulation Framework for Operational Data Assimilation. ...

... of a matrix creating a linear system of equations. ... order accurate method for the heat equation and a ... is the same as that of the Laplace operator (see ...

Safe, efficient operation of waste tank farm facilities is dependent in part upon the availability of accurate, up-to-date plant drawings. Accurate plant drawings are also required in support of facility upgrades and future engineering remediation projects. This supporting document establishes the procedure for performing a visual ...

(ASI) for accurate measurement of the Earth gravitomagnetic field (Lense- Thirring effect). We descibe the status of this experiment that will be launched ...

... Accession Number : ADA396425. Title : Accurate Multiresolution Modeling of the Earth's Gravitational Field. Descriptive ...

Exposure of the operative field and adequate illumination are essential to cardiovascular surgery. The standard fixed surgical lamp may provide acceptable lighting for most surgical procedures, but the cardiovascular surgeon often needs more intense lighting to perform a small, tedious anastomosis. We have found the fiberoptic headlamp to be a satisfactory ...

A research effort was conducted to establish the feasibility of and develop an inexpensive air-dropped penetrometer that can provide accurate measures of aircraft performance on unsurfaced airfields. This report describes the terradynamic, aerodynamic, structural, and telemetry system designs for the penetrometer and the results of field tests with a ...

Timely and accurate operational intelligence is critical to all Air Force combat operations. The key to timely receipt of accurate intelligence ir properly stated, validated, and prioritized requirements. Air Force operators and commanders need a better u...

Efficient and accurate measurement of natural gas is discussed. Advanced electronic technology makes accurate and timely measurement feasible. However, the key to the success of custody-transfer systems is integrating field measurement and office procedures. Electronic measurement also allows for automated on-line billing, more ...

Piezoelectric tube scanners have emerged as the most widely used nanopositioning technology in modern scanning probe microscopes. Despite their impressive properties, their fast and accurate operations are hindered due to complications such as scan induced mechanical vibrations, hysteresis nonlinearity, creep, and thermal drift. This paper presents an ...

The main lines in the design of integrated circuits for accurate analog linear electric signal processing in a frequency range including DC are investigated. A categorization of universal active electronic devices is presented on the basis of the connections of one of the terminals of the input and output ports to the common ground potential. The means for quantifying the ...

BS>Probes with small dimensions, operating on the principle varying magnetic fields. This principle is described together with the construction of a Hall magnetometer possessing a measurement range of 0 to 20000 gauss, subdivided into 5 stages. If the results are read off directly, the magnetometer is accurate to within ...