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1 edition of computerized method for instantaneous and continuous measurements of expired nitrogen found in the catalog.

computerized method for instantaneous and continuous measurements of expired nitrogen

computerized method for instantaneous and continuous measurements of expired nitrogen

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Published by Aerospace Medical Research Laboratories in Wright-Patterson Air Force Base, Ohio .
Written in English

    Subjects:
  • Respiration -- Data processing.,
  • Pulmonary function tests.,
  • Respiratory gas monitoring.

  • Edition Notes

    Statementby John Abajian ... [et al.]
    SeriesAMRL-TR -- 67-77
    ContributionsAbajian, John., Aerospace Medical Research Laboratories (U.S.)
    The Physical Object
    Paginationviii, 56 p. :
    Number of Pages56
    ID Numbers
    Open LibraryOL21640420M

      Lung volumes are subdivided into static and dynamic lung volumes. Static lung volumes are measured by methods which are based on the completeness of respiratory manoeuvres, so that the velocity of the manoeuvres should be adjusted accordingly. The measurements taken during fast breathing movements are described as dynamic lung Cited by: A simple method for measuring functional residual capacity by N2 washout in small animals and newborn infants. Gerhardt T, Hehre D, Bancalari E, Watson H. An open circuit N2 washout technique is described for the determination of functional residual capacity in infants. Either % O2 or any oxygen/helium mixture can be used as the washing by:

    A computerized method for instantaneous and continuous measurements of expired nitrogen. AMRL-TR Abajian J, Shinozaki T, Hanson JS, Tabakin BS.   The reliability of the Kjeldahl method for the determination of nitrogen in soils has been investigated using a range of soils containing from 003 to 27% nitrogen. 2. The same result was obtained when soil was analysed by a variety of Kjeldahl procedures which included methods known to recover various forms of nitrogen not determined by Cited by:

    Purchase Advances in Mechanical Behaviour, Plasticity and Damage - 1st Edition. Print Book & E-Book. ISBN , A digital integrator for on-line pulmonary compliance measurements. Shinozaki T, Abajian J, Hanson JS, Tabakin BS> ;J Appl Physiol. The safety and efficacy of spinal anesthesia for surgery in infants: the Vermont Infant Spinal tion: Physician.


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Computerized method for instantaneous and continuous measurements of expired nitrogen Download PDF EPUB FB2

A computerized method for instantaneous and continuous measurements of expired nitrogen. AMRL-TR Abajian J Jr, Shinozaki T, Hanson JS, Tabakin BS. PMID: [PubMed - indexed for MEDLINE] MeSH Terms.

Computers* Humans; Methods; Nitrogen/analysis* Respiratory Function Tests* Substances. NitrogenCited by: 2. To perform the calculations of continuous RQ, air flow and expired carbon dioxide, oxygen and nitrogen must be recorded during a single breath. We sampled each signal 25 times per second and then used the following formula to calculate RQ at each sample : R.

Peters, R. Brienzo, J. Brimm. MATERIALS AND METHODS Apart from its relevance to the measurement of cardiac output, Vt>2 can be used in conjunction with VO2 was found by subtracting the expired oxygen carbon dioxide output (VCO2) to estimate the pa- volume (V E C O from the inspired oxygen volume tient's energy by: a waveform, with inhaled O2 concentration at the positive peaks, and minimum expired O2 concentration at the minimum peaks.

CO2 waveforms generally form a mirror image when compared to O2 waveforms. Comparing inspired and expired O2 and CO2 concentrations at the mask provides an instantaneous assessment of the O2-CO2 balance. Any disruption of.

A computerized method for retrieving documents from a text corpus in response to a user-supplied natural language input string, e.g., a question. An input string is accepted and analyzed to detect phrases therein. A series of queries based on the detected phrases is automatically constructed through a sequence of successive broadening and narrowing operations designed Cited by: The functional residual capacity of patients treated with mechanical ventilation was measured with two methods: the closed helium dilution method and the open nitrogen washout method with a computerized system.

Measurements of FRC were made with and without PEEP. The results obtained did not show significant differences between the methods Cited by: Formerly, the gold standard method used to measure VO 2 and carbon dioxide excretion (VCO 2) was the Douglas bag method, against which newer.

The aim of this study was to validate a computerized metabolic system with mixing chamber (Oxycon Pro, Erich Jaeger GmbH, Hoechberg, Germany) against the Douglas bag method (1) over a large range.

Automated Colorimetric Method for Nitrate Analysis A NON-HAZARDOUS ALTERNATIVE TO TRADITIONAL METHODS FOR AQUEOUS SOLUTIONS by Craig R. Chinchilla “The nitrate-to-nitrite reduction is consistently between 95 percent and percent, which is a dramatic improvement over tradi-tional nitrate methods.”.

Nitrogen according to Kjeldahl For longer than years the Kjeldahl method has been used for the determination of nitrogen in a wide range of samples. The determination of Kjeldahl nitrogen is made in foods and drinks, meat, feeds, cereals and forages for. A computerized method for instantaneous and continuous measurements of expired nitrogen.

AMRL-TR Abajian, J., Shinozaki, T., Hanson, J. S., Tabakin, B. Halothane and the heart. The invention provides an ultrasonic device for continuously and noninvasively monitoring instantaneous fluctuations in viscoelastic-related properties of tissue comprising a pair of substantially parallel spaced-apart piezoelectric transducers having a gap therebetween and adapted to bracket and come in direct contact with living tissue inserted in the gap between Cited by: Continuous-flow processing has become one of the fastest-growing research areas in chemistry in the last 10 years.

Herein we disclose an automated and scalable continuous-flow route for the quick introduction of trifluoromethyl groups on a variety of heterocycles, with application in drug discovery and manufacturing. This involves the direct alkylation-cyclization of amines in the Cited by: 1.

Page 7 Techniques For Measuring Reactive Nitrogen Oxides, Volatile Organic Compounds, and Oxidants Introduction. A key element in advancing the understanding of tropospheric production of ozone is the ability to make unequivocal measurements of the concentrations of the ozone precursors, the reactive nitrogen oxides (NO y compounds) and volatile organic.

Calibration of diffusive samplers for nitrogen dioxide using the reference method – Evaluation of measurement uncertainty Abstract For many years, diffusive samplers (modified Palmes tubes) for nitrogen dioxide (NO 2) have been used in the North Rhine-Westphalia air quality network.

Due to a large upgrade of automated NO x measu. There are no satisfactory methods for monitoring oxygen consumption in critical care. To address this, we adapted laser absorption spectroscopy to provide measurements of O2, CO2, and water vapor within the airway every 10 ms.

The analyzer is integrated within a novel respiratory flow meter that is an order of magnitude more precise than other flow by: A computerized method for instantaneous and continuous measurements of expired nitrogen. AMRL-TR Abajian J, Shinozaki T, Hanson JS, Tabakin BS> ;AMRL TR. Hypertrophied adenoids causing pulmonary hypertension and severe congestive heart failure.

In the open-circuit method (Fig. ), % oxygen is inspired through a bias flow or one-way nonrebreathing system, and a mixture of nitrogen and oxygen is patient continues to breathe % oxygen until all of the nitrogen has been washed from the lungs. The amount of nitrogen exhaled is quantified by collecting the total volume of gas expired, the washout.

UNESCO – EOLSS SAMPLE CHAPTERS PHYSIOLOGY AND MAINTENANCE – Vol. V - Biological Nitrogen Fixation with Emphasis on Legumes - Kristina Lindström ©Encyclopedia of Life Support Systems (EOLSS) 1. Nitrogen-Fixing Organisms Biological nitrogen fixation is a natural process in which atmospheric dinitrogen gas (N2) is converted to ammonia:File Size: KB.

Chapter 4 Measurement methods and UK monitoring networks for NO 2 Key points Several techniques are available to measure NO 2 concentrations in the atmosphere. The chemiluminescent analyser is widely used for continuous monitoring of NO 2 concentrations in the UK.

It is the reference method specified in the EU First Air Quality. nitrogen fixation rates without requiring a proxy or an exchange of the natural ecosystem atmosphere. Given its simplicity, the proposed method indicates the potential to open up a new avenue of nitrogen fixation research. Existing direct methods for quantifying biological nitrogen fixation in plants and soils vary widely.

For plants, the NCited by: -Expired Air CALORIMETER FOR NEONATES ON VENTILATORS 31 TABLE 1 Performance specifications of the MOM, Jr.t Index Range Accuracy Flow L/min instantaneous flow ±3% of reading Oxygen Inspired-expired differential oxygen % inspired or expired oxygen ±% full scale ±% full scale Carbon dioxide % expired or end-tidal carbon.The Kjeldahl method or Kjeldahl digestion (Danish pronunciation: [ˈkʰelˌtɛˀl]) in analytical chemistry is a method for the quantitative determination of nitrogen contained in organic substances plus the nitrogen contained in the inorganic compounds ammonia and ammonium (NH 3 /NH 4 +).Without modification, other forms of inorganic nitrogen, for instance nitrate.