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Relevant bibliographies by topics / Peak Flow Factor

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Journal articles

Academic literature on the topic 'Peak Flow Factor'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Peak Flow Factor"

1

THOMAS, Paul S., Clifford NG, and Michael BENNETT. "Peak expiratory flow at increased barometric pressure: comparison of peak flow meters and volumetric spirometer." Clinical Science 98, no. 1 (1999): 121–24. http://dx.doi.org/10.1042/cs0980121.

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Increasing numbers of patients are receiving hyperbaric oxygen therapy as an intensive care treatment, some of whom have pre-existing airway obstruction. Spirometers are the ideal instruments for measuring airway obstruction, but peak flow meters are useful and versatile devices. The behaviour of both types of device was therefore studied in a hyperbaric unit under conditions of increased pressure. It is important to have a non-electrical indicator of airway obstruction, to minimize the fire risk in the hyperoxic environment. The hypothesis was tested that, assuming that dynamic resistance is

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2

Wirtz, Denis. "Flow-induced scattering peak in the structure factor of polymer solutions." Physical Review E 50, no. 3 (1994): R1755—R1758. http://dx.doi.org/10.1103/physreve.50.r1755.

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3

Tarko, Andrew P., and Rafael I. Perez-Cartagena. "Variability of Peak Hour Factor at Intersections." Transportation Research Record: Journal of the Transportation Research Board 1920, no. 1 (2005): 125–30. http://dx.doi.org/10.1177/0361198105192000115.

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A peak hour factor (PHF) is used to convert hourly traffic volume into the flow rate that represents the busiest 15 min of the rush hour. Past research indicated that PHF had a strong impact on traffic analysis results. The common practice is to use a default value recommended by national or local guidelines or to use limited field observations. This paper investigates the variability of PHF over time and across locations. The day-to-day variability of PHF was found to be as strong as the site-to-site variability. This finding prompts estimation of the PHF on the basis of multiple field measur

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Brunkal, Holly, and Paul Santi. "Consideration of the Validity of Debris-flow Bulking Factors." Environmental and Engineering Geoscience 23, no. 4 (2017): 291–98. http://dx.doi.org/10.2113/gseegeosci.23.4.291.

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Abstract Compilation of a database of debris-flow peak discharges (Q) allowed for a comparison with the expected basin discharge, as computed using the rational equation, Q=CIA. The observed values of Q for debris flows in unburned and burned areas were divided by the computed Q values of runoff using the rational method. This ratio is the bulking factor for that debris-flow event. Unburned and burned basins constitute two distinct populations; analysis shows that the bulking factors for burned areas are consistently higher than those for unburned basins. Previously published bulking factors f

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Oliveira, Kauan Polli de, Daniela Baonazzi Sodek, Laura Maria Canno Ferreira Fais, José Gilberto Dalfré Filho, and André Luís Sotero Salustiano Martim. "Water consumption peak demand factor: Effectiveness analysis with different approaches." Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental 24 (December 4, 2020): e19. http://dx.doi.org/10.5902/2236117062694.

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The design of the water distribution networks in a given region must guarantee 24-hour supply, meeting the times of greatest demand, defined as factors of peak consumption. Thus, it is important that water reaches users effectively, ensuring adequate quantity and quality for carrying out daily activities. The premise then is the average flow demanded by the population, and the fluctuations that may occur from this value, weighted from the dimensionless peak coefficients K1 (coefficient of the day of greatest consumption) and K2 (coefficient of the hour of greatest consumption). In this paper,

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Zhou, Qing Yun, Yang Ren Wang, and Shu Hong Sun. "Characteristic of Sap Flow of Poplar and Response to Meteorological Factors in Coastal Region." Advanced Materials Research 1010-1012 (August 2014): 1055–58. http://dx.doi.org/10.4028/www.scientific.net/amr.1010-1012.1055.

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Thermal dissipation sap flow rate probe was used to measure trunk sap flow dynamic of Poplar during the growing season from September 2011 to May 2012 in coastal region of China. The relationship of trunk sap flow rate and meteorological factors was analyzed. The results showed that the process of sap flow rate of Poplar presented an obvious day and night alternate phenomenon. The diurnal variation of sap flow was a single-peak curve in sunny day and a multi-peak curve in rainy day. According to Pearson correlation analysis, the diurnal sap flow rate of Poplar was positively correlated with so

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Zamzami, Zamzami, Azmeri Azmeri, and Syamsidik Syamsidik. "SISTEM JARINGAN DISTRIBUSI AIR BERSIH PDAM TIRTA TAWAR KABUPATEN ACEH TENGAH." Jurnal Arsip Rekayasa Sipil dan Perencanaan 1, no. 1 (2018): 132–41. http://dx.doi.org/10.24815/jarsp.v1i1.10330.

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The provision of clean water in Takengon City, Aceh Tengah Regency is provided by PDAM Tirta Tawar, one of which is through the water network of Oregon Mendale Water Treatment Plant (IPA). However, a preliminary survey at the Oregon Mendale IPA source suggested inadequate water for the community. The aim of this research is to know the factors that must be fulfilled so that a clean water network system can run smoothly. This includes water flow, pressure and flows continuity, maximum daily factor (Fmax) and real peak factor (Fpeak) of the existing network. This study is also to understand the

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Sharan, A., J. H. Lienhard, and R. Kaul. "Corresponding States Correlations for Pool and Flow Boiling Burnout." Journal of Heat Transfer 107, no. 2 (1985): 392–97. http://dx.doi.org/10.1115/1.3247427.

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The peak pool boiling heat flux can be nondimensionalized so the dimensionless peak heat flux is a function of a Bond or Laplace number that characterizes the system geometry. The dimensionless peak heat flux can be interpreted as the product of a geometrical function (given by previous investigations), universal functions of the reduced saturation pressure, and the Pitzer acentric factor. The latter universal functions are constructed by correlation. These are combined to give a single prediction of the peak heat flux that applies to all the common geometrical heater configurations. The proba

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9

Naznin, Rubait, Akhtarun Nessa, and Sayeda Nazrina. "Effect of Cigarette Smoking on Peak Expiratory Flow Rate." Journal of Armed Forces Medical College, Bangladesh 15, no. 2 (2020): 165–67. http://dx.doi.org/10.3329/jafmc.v15i2.50826.

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Introduction: Cigarette smoking is an intractable public health problem that carries a threat to the health of the entire population. Smoking is a known risk factor for chronic obstructive pulmonary diseases, cardiovascular diseases, certain cancers especially lung cancer. Objectives:To assess the effect of cigarette smoking on peak expiratory flow rate (PEFR) among cigarette smokers and examine whether PEFR differs between cigarette smokers and non-smokers. Materials and Methods: This is cross-sectional comparative study was done for one year from July 2014 to June 2015. A total o

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10

Shen, Ling, Jian Lu, Dongdong Geng, and Ling Deng. "Peak Traffic Flow Predictions: Exploiting Toll Data from Large Expressway Networks." Sustainability 13, no. 1 (2020): 260. http://dx.doi.org/10.3390/su13010260.

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Big data from toll stations provides reliable and accurate origin-destination (OD) pair information of expressway networks. However, although the short-term traffic prediction model based on big data is being constantly improved, the volatility and nonlinearity of peak traffic flow restricts the accuracy of the prediction results. Therefore, this research attempts to solve this problem through three contributions, firstly, proposing the use the Pauta criterion from statistics as the standard for defining the anomaly criteria of expressway traffic flows. Through comparison with the common local

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