Citations with the tag: PRESSURE
Results 151 - 200
- A framework for the development and testing of an edge pedestal model: Formulation and initial comparison with DIII-D data.
Stacey, W. M.; Groebner, R. J. // Physics of Plasmas; Jun2003, Vol. 10 Issue 6, p2412
A framework has been formulated for the further development and testing of a predictive edge pedestal model. This framework combines models for the interaction of the various physical phenomena acting in the edge pedestal -- transport, neutral fueling penetration, atomic physics cooling, MHD...
- High blood pressure.
Stacey, W. M.; Groebner, R. J. // Nation's Health; Apr97, Vol. 27 Issue 4, p15
Reports that the Office of Minority Health Resource Center is making a special effort to educate minority communities in recognition of National High Blood Pressure Month. How the center is distributing free copies of an information packet; How to request a packet.
- Boiler inspectors seeking papers for April 27-May 1, 1998 meeting.
Stacey, W. M.; Groebner, R. J. // Professional Safety; Aug97, Vol. 42 Issue 8, p14
Reports on the call by the National Board of Boiler and Pressure Vessel Inspectors for presentations to be delivered at its general meeting, scheduled for April 27-May 1, 1998. Location for meeting; Length of abstract to be submitted; Deadline date for submission; Contact information.
- Mesoscale Dynamics of the Near-Dryline Environment: Analysis of Data from COPS-91.
Stacey, W. M.; Groebner, R. J. // Monthly Weather Review; Sep97, Vol. 125 Issue 9, p2161
A technique is introduced using surface data from triangular networks of adjacent mesonet stations to estimate the terms in the horizontal equation of motion at anemometer level (10 m) on either side of the dryline in the southern plains of the United States. Data from an instrumented surface...
- Positive peer pressure.
Stacey, W. M.; Groebner, R. J. // Current Health 1; Apr93, Vol. 16 Issue 8, p2
Presents results of a psychologist at Purdue University in Indiana that says young people are more likely to be influenced by positive peer pressure than by negative peer pressure. Friends do not have strong influence on each other when it comes to drinking alcohol; Many young people simply...
- Optical chamber system designed for microscopic observation of living cells under extremely high hydrostatic pressure.
Koyama, Sumihiro; Miwa, Tetsuya; Sato, Takako; Aizawa, Masuo // Extremophiles; Apr2002, Vol. 6 Issue 2, p175
Presents a correction to the article "Optical Chamber System Designed for Microscopic Observation of Living Cells Under Extremely High Hydrostatic Pressure," published in the March 2, 2002 issue of the journal "Extremophiles."
- Pluto's Twin?
Sage, Leslie J. // Journal of the Royal Astronomical Society of Canada; 2011, Vol. 105 Issue 6, p264
The article offers the author's insight on the difference between the dwarf planet Eris and Pluto. He says that there is no need to create a new category, such as dwarf planet, because Pluto was already recognized as Kuiper Belt objects (KBOs). He mentions that Eris has no evidence for an...
- Senate restricts lobbying by advocacy groups.
Sage, Leslie J. // Human Events; 8/18/95, Vol. 51 Issue 32, p22
Reports on the US Senate's adoption of an amendment to the lobbying registration bill banning any organization that engages in lobbying from receiving federal grants. Supporters and opponents of the amendment.
- Where's the air?
Mason, William A.; Pearsall, M.B. // Approach: The Naval Safety Center's Aviation Magazine; Jul/Aug96, Vol. 41 Issue 4, p44
Discusses the repair of a failure in fuel-tank pressurization system. Internal-fuel pressurization levels; Finding the cause of reduced airflow to the pumps.
Huber, Jeffrey T.; Gillaspy, Mary L. // Encyclopedic Dictionary of AIDS-Related Terminology; 2000, p171
A definition of the term "palpation," which refers to the application of light fingertip pressure to the outer surface of the body to determine consistence and outline of organs within, is presented.
- Flowstat chops power to dry running pumps.
Huber, Jeffrey T.; Gillaspy, Mary L. // Professional Engineering;
Presents information on a flowstat pressure sensor which was developed to protect liquid pumps from dry running. Information on the flowstat; Reference to a spring-loaded flexible diaphragm; How the spring functions; What happens if hydraulic pressure is restored.
- Bleed air pressure sensor.
Huber, Jeffrey T.; Gillaspy, Mary L. // Aviation Week & Space Technology;
Reviews the PX9310 pressure sensor from Kavlico Corp. Used to monitor the bleed pressure of auxiliary power units on turbofan-powered business jets; Use of ceramic capacitive sensing technology; Features; Company contact point.
- Generation of static pressures above 2.5 megabars in a diamond-anvil pressure cell.
Goettel, Kenneth A.; Mao, Ho-kwang; Bell, Peter M. // Review of Scientific Instruments; Jul85, Vol. 56 Issue 7, p1420
A static pressure of 2.75 Mbars has been generated in a diamond-anvil pressure cell. This pressure is 1 Mbar higher than the highest static pressure previously produced in a laboratory, 1.72 Mbar by Mao and Bell [Science 200, 1145 (1978)]. Improvements in the geometry of the cut of beveled anvil...
- Acoustic gas density measuring cell.
Haran, E. N. // Review of Scientific Instruments; Sep88, Vol. 59 Issue 9, p2059
Preliminary experiments reported in 1983 suggested that the density of a known gas could be determined, in principle, by measuring the alternating pressure of an acoustic field set up in the gas. A density measuring cell has now been developed that is inherently fast acting (overall response...
- Pressure sensor handles the heat.
Raymond, Martha K. // Machine Design; 04/16/98, Vol. 70 Issue 7, p62
Provides information on the development of the Model 9016 Ethernet Intelligent Pressure Scanner to handle temperature changes of pressure sensors by Pressure Systems Incorporated. Features of the system; What the system consists of.
- Miniaturization techniques for obtaining static pressures comparable to the pressure at the center of the earth: X-ray diffraction at 416 GPa.
Ruoff, Arthur L.; Xia, Hui; Luo, Huan; Vohra, Yogesh K. // Review of Scientific Instruments; Dec90, Vol. 61 Issue 12, p3830
X-ray diffraction studies on tungsten and molybdenum were performed, using a 4-ï¿½m-diam x-ray beam, to very high pressures, with the pressures being obtained from the measured lattice parameters and isothermal equations of state of tungsten and molybdenum deduced from shock data. The bcc...
- An experimental method to dynamically test pressure sensors using a rupture disk.
Liu, Hanying; Miller, Don W.; Talnagi, Joseph W. // Review of Scientific Instruments; Feb2002, Vol. 73 Issue 2, p459
The response time of a pressure sensor is required when it is used in control systems and in some measurement applications. It is often difficult to measure the response time of a pressure sensor since it is difficult to obtain changes in fluid pressure sufficient to characterize the sensor...
- High-pressure strand burner system for propellant flame studies using absorption spectroscopy.
Mallery, C.; Kim, E.; Thynell, S.T. // Review of Scientific Instruments; Aug1995, Vol. 66 Issue 8, p4091
Describes the design and operation of a high-pressure strand burner capable of withstanding pressures up to 6.9 MPa. Associated components for use with the chamber; Performance of absorption measurements using Fourier-transform infrared spectroscopy; Obtained spectra with sufficient...
- Dependence of the fundamental band gap of Al...Ga...N on alloy composition and pressure.
Haller, E. E.; Martin, M. C. // Journal of Applied Physics; 6/15/1999, Vol. 85 Issue 12, p8505
Presents optical absorption studies to investigate the dependence of the fundamental band gap of epitaxial films on aluminium (Al) content and applied hydrostatic pressure. Results of absorption measurements performed at atmospheric pressure; Optical transmission spectra taken from several...
- Intelligent pressure scanners enhance chillers.
Haller, E. E.; Martin, M. C. // Control Engineering; Mar98, Vol. 45 Issue 3, p61
Features the Model 9010 intelligent pressure scanner from Pressure Systems Inc. Product use; Key features.
- Keeping the pressure on pressure instrumentation.
Johnson, Dick // Control Engineering; Mar98, Vol. 45 Issue 3, p98
Discusses the importance and key features of several pressure sensing devices. Process control and instrumentation; Pressure sensing measurement; Flow and level measurement; Yokogawa Industrial Automation's A-Series DPharp digital pressure transmitter; Foxboro Co.'s I/A Series pressure...
- TPMS Rollout Rolling Along.
Murphy, Tom // Ward's Auto World; Mar2009, Vol. 45 Issue 3, p30
The article focuses on the Tire Pressure Monitoring System (TPMS) mandatory for new vehicles sold in the U.S. It is stated that the standard is used in requiring onboard monitors to warn drivers when tire air pressure is at least 25% below the recommended cold-inflation pressure. The industry...
- Central Venous Pressure as a Guide to Volume Expansion.
Murphy, Tom // Annals of Internal Medicine; Jun67, Vol. 66 Issue 6, p1283
Editorial. Discusses the importance of central venous pressure (CVP) to blood volume expansion. Accuracy of the appraisal of right ventricular filling pressure through CVP; Reason for the reluctance of some physicians to expand blood volume despite a normal CVP; Techniques for monitoring CVP.
- Pressure transmitter.
Murphy, Tom // Plant Engineering; May2011, Vol. 65 Issue 4, p58
The article presents information about the pressure transmitter, S-10.
- How to identify shallow water flows with real-time pressure measurement.
Ward, Chris; Beique, Mitch // Offshore; Jun99, Vol. 59 Issue 6, p34
Part I. Provides information on the various applications of Pressure-While-Drilling sensor measurements, focusing on shallow water flows, a major deepwater problem. Reason deepwater drilling often proves troublesome; Methods used to mitigate the water flows; Causes of equivalent mud weight.
Ward, Chris; Beique, Mitch // Hutchinson Dictionary of Scientific Biography; 2005, p1
Reactor vessel constructed to allow chemical reactions to take place at high temperature and pressure. Such vessels are used, for example, in the manufacture of chemicals and materials for the construction industry.
- QUESTION OF THE MONTH.
Ward, Chris; Beique, Mitch // Motor Age; Oct2012, Vol. 131 Issue 10, p14
A quiz about tire pressuring monitoring system is presented.
- The energies of microvoid formation in Si as a function of applied hydrostatic stress.
Cuendet, Nicolas; Halicioglu, Timur; Tiller, William A. // Applied Physics Letters; 12/23/1996, Vol. 69 Issue 26, p4071
Using a Tersoff-type empirical potential energy function, the free energy of formation for microvoids in silicon containing 24 and 57 vacancies was calculated at 1000 K as a function of externally applied hydrostatic stress in the range of -10 kbar (tensile) to 10 kbar (compressive). The results...
Cuendet, Nicolas; Halicioglu, Timur; Tiller, William A. // Taber's Cyclopedic Medical Dictionary (2009); 2009, Issue 21, p1127
A definition of the term "hypertonicity," which refers to an excess of muscular or arterial tone or intraocular pressure, is presented.
Cuendet, Nicolas; Halicioglu, Timur; Tiller, William A. // Taber's Cyclopedic Medical Dictionary (2009); 2009, Issue 21, p1230
A definition of the term "iridencleisis," which refers to an operation for relieving increased intraocular pressure, is presented.
- Digital pressure gage.
Cuendet, Nicolas; Halicioglu, Timur; Tiller, William A. // New Equipment Digest; Aug99, Vol. 64 Issue 8, p79
Introduces the Quartzonix Model 9600 digital pressure gage from Pressure Systems Inc. Product features; Applications; Contact information.
- Abnormal CVP waveform.
Raut, Monish S.; Maheshwari, Arun // Saudi Journal of Anaesthesia;
A letter to the editor is presented regarding abnormal central venous pressure (CVP) waveform.
- Air pressure.
Farndon, John // Planet Earth (1-59084-469-6); 2003, p57
Although air is light, there is so much of it that air can exert huge pressure at ground level. It is the constant bombardment of billions of air molecules as they zoom about. Air pushes in all directions at ground level with a force of over two pounds per square centimeter. A fall in air...
- Heart rate and blood pressure during initial LBNP do not discriminate higher and lower orthostatic tolerant men.
Shawn R. Simonson; Peter Norsk; John E. Greenleaf // Clinical Autonomic Research; Dec2003, Vol. 13 Issue 6, p422
High (n = 7, 25 Â± 2 yr) and low (n = 8, 26 Â± 3 yr) lower body negative pressure (LBNP) tolerant men were exposed to ?15 mmHg (for 12 min) followed by ?50 mmHg (for 21 min) to test the hypothesis that heart rate (HR) and blood pressure (BP) data from acute exposure to LBNP would not...
- Transducer has digital compensation.
Shawn R. Simonson; Peter Norsk; John E. Greenleaf // Modern Power Systems; Aug95, Vol. 15 Issue 8, p95
Reports on the introduction of Pressure Systems Inc.'s series of all-media transducers.
- Managing supply pressure effect.
Adkins, Michael; Pronk, Wouter // Process & Control Engineering (PACE); Dec2013, Vol. 66 Issue 11, p12
The article the phenomena of the surface pressure effect (SPE) wherein the outlet pressure increases for no reason in a pressure-reducing regulator. Described is SPE which is also referred to as dependency wherein its possible cause could be a malfunctioning regulator. Noted is the management of...
- A COMPACT PORTABLE MERCURY MANOMETER FOR CALIBRATING PRESSURE TRANSDUCERS.
Gunther, Terry; Medina, A.; Grismer, J. T. // Angiology; Oct1965, Vol. 16 Issue 10, p635
Features a compact portable mercury manometer used for calibrating pressure transducers. Types of mercury manometer; Design of the manometer; Calibration requirements.
- Study explores mechanism of increased nocturnal IOP.
Groves, Nancy // Ophthalmology Times; 9/1/2007, Vol. 32 Issue 17, p16
The article presents a study on the increased nocturnal changes in intraocular pressure (IOP). Research indicates that IOP follows a carcadian rhythm that includes a nocturnal increase which occurs despite a nighttime decrease in aqueous humor flow. Researchers found that tonographically...
- Systemic, circadian factors challenge IOP control measures.
Rajecki, Ron; Asrani, Sanjay // Ophthalmology Times; 7/1/2008, Vol. 33 Issue 13, p10
The article discusses factors related with controlling intraocular eye pressure (IOP). It is stated that the challenging task of controlling patients IOP becomes more difficult due to several factors which can cause fluctuations in IOP. These factors include posture, blood pressure,...
- Why Some Compression Tanks Fail.
Holohan, Dan // Supply House Times; Sep2011, Vol. 54 Issue 7, p40
The article focuses on the common cause of failures of compression tanks in industrial packaged boilers. According to the author, the most failures are due to the size incompatibility of compression tanks to the fill pressure it handles from packaged boilers. The author adds that failures also...
- Don't dismiss white-coat hypertension.
Holohan, Dan // Cortlandt Forum; 9/25/2005, Vol. 18 Issue 9, p17
Cites a study on the existence of white-coat hypertension in Japan. Citations of the blood pressure of the respondents; Rate of the white-coat group who had progressed to true hypertension; Need to monitor white-coat hypertension.
- PNEUMATIC VALVES REQUIRING NO PROTECTIVE CABINET.
Holohan, Dan // Product Design & Development; Oct2004, Vol. 59 Issue 10, p19
Features the Series CL03 pneumatic valve system from Bosch Rexroth Corp. Protection class rating for high-pressure washdown; System performance; Installation near actuators; Multi-pin connection or serial communication options for major protocols available.
- A Computer Controlled Precision High Pressure Measuring System.
Sadana, S.; Yadav, S.; Jha, N.; Gupta, V. K.; Agarwal, R.; Bandyopadhyay, A. K.; Saxena, T. K. // Measurement Science Review; 2011, Vol. 11 Issue 6, p198
No abstract available.
- Calculation of barometric efficiency in shallow piezometers using water levels, atmospheric and earth tide data.
R. Acworth; T. Brain // Hydrogeology Journal; Dec2008, Vol. 16 Issue 8, p1469
Abstractï¿½ï¿½The variation in atmospheric pressure at Baldry in New South Wales, Australia (32ï¿½52' S, 148ï¿½32' E), has been determined using a 4-year record of hourly measurements. Fourier analysis of this data shows clear diurnal and semi-diurnal variation in atmospheric...
- A new sensitivity analysis scheme for coupled vibro-acoustic system using wave based method.
Xuesong He; Qibai Huang; Caixia You // Archive of Applied Mechanics; Feb2009, Vol. 79 Issue 2, p125
Abstractï¿½ï¿½Vibro-acoustic sensitivity is used to predict the change of structure displacement and acoustic pressure when the design variable has been changed, which is significant for reducing the vibration and noise of systems. The sensitivity of structure displacement and acoustic...
- Pressure effect on the structural and elastic properties of ternary compounds M2AlC (M = Ti, V, Nb, and Ta); ab initio study.
Y. Medkour; A. Roumili; D. Maouche // European Physical Journal - Applied Physics; Nov2008, Vol. 44 Issue 2, p125
Using ab initio calculations, we have performed a study of the hydrostatic pressure effect on the equilibrium volume, lattice parameters, elastic modulus, and elastic anisotropy of selected M2AlC phases with M = Ti, V, Nb, and Ta. The deviations of our calculated volume change are lower than 3%...
- Dual-mode operation of flexible piezoelectric polymer diaphragm for intracranial pressure measurement.
Chunyan Li; Pei-Ming Wu; Shutter, Lori A.; Narayan, Raj K. // Applied Physics Letters; 2/1/2010, Vol. 96 Issue 5, p053502
The dual-mode operation of a polyvinylidene fluoride trifluoroethylene (PVDF-TrFE) piezoelectric polymer diaphragm, in a capacitive or resonant mode, is reported as a flexible intracranial pressure (ICP) sensor. The pressure sensor using a capacitive mode exhibits a higher linearity and less...
- Spin crossover: the quantum phase transition induced by high pressure.
Nesterov, A. I.; Ovchinnikov, S. G. // JETP Letters; Dec2009, Vol. 90 Issue 7, p530
The relationship is established between the Berry phase and spin crossover in condensed matter physics induced by high pressure. It is shown that the geometric phase has topological origin and can be considered as the order parameter for such transition.
- Mathematical modeling of Maklakoffï¿½s method for measuring the intraocular pressure.
Bauer, S.; Lyubimov, G.; Tovstik, P. // Fluid Dynamics; Jan2005, Vol. 40 Issue 1, p20
The physical content of Maklakoffï¿½s tonometric (based on the loading of the cornea) method of measuring the intraocular pressure, widely used in medical practice, is discussed. For this purpose, we employ both the results of physical modeling of the eye described in the literature and the...
- The kraken awakes.
Stanton, Justin // Motor Transport; 5/28/2009, p10
The article presents the author's views on the activities of the protest group TransAction in Great Britain. He observes that one cannot ignore the headlines and coverage the group's protests have received in the past. He recalls the involvement of Peter Carroll of Seymour Transport with...