Thermal Measurements of a Rail-Cask-Size Pipe-Calorimeter in Jet Fuel Fires

2009 ◽  
Author(s):  
Miles Greiner ◽  
Marcelo del Valle ◽  
Carlos Lopez ◽  
Victor Figueroa ◽  
Esam Abu-Irshaid
Keyword(s):  
Radiant Heat ◽  
Jet Fuel ◽  
Fire Tests ◽  
Full Data ◽  
Data Set ◽  
Participating Media ◽  
The Third ◽  
Thermal Measurements ◽  
Experimental Facilities ◽  
Fire Characteristics

A series of fire tests was conducted involving a 2.44-m-(8-ft)-diameter, 4.57-m-(15-ft)-long, 2.54-cm-(1-inch)-wall thickness pipe calorimeter suspended 1-m above a 7.93-m-diameter pool that contained 7.57 m3 (2000 gallons) of jet fuel. The wind conditions, calorimeter temperature, participating media temperature and speed, and radiant heat flux, were measured at several locations as functions of time in three fire tests. The first two had relatively light winds and lasted roughly 40 minutes, while the third had much stronger winds and consumed the fuel in 25 minutes. The purpose of this paper is to describe the experimental facilities and certain fire characteristics. The large amount of data acquired cannot be fully presented in this paper. A website is available by contacting the first author so that the full data set may be used to quantitatively benchmark large-fire simulations and models.

Inversion strategy in crosshole radar tomography using information of data subsets

Geophysics ◽  
2004 ◽  
Vol 69 (1) ◽  
pp. 222-230 ◽  
Author(s):  
Andreas Becht ◽  
Jens Tronicke ◽  
Erwin Appel ◽  
Peter Dietrich
Keyword(s):  
Important Application ◽  
Second Step ◽  
Full Data ◽  
Data Set ◽  
Tomographic Inversion ◽  
The Third ◽  
Joint Interpretation ◽  
Starting Model ◽  
And Inversion ◽  
Limited Accuracy

Detecting discrete anomalies, such as cavities or tunnels, is an important application of crosshole radar tomography. However, crosshole tomographic inversion results are frequently ambiguous, showing smearing effects and inversion artifacts. These ambiguities lead to uncertainties in interpretation; hence, the size and position of anomalies can only be interpreted with limited accuracy and reliability. We present an inversion strategy for investigating discrete anomalies with crosshole radar tomography. In addition to the full traveltime data set, we use subsets of specified ray‐angle intervals for tomographic inversion. By analyzing inversion results from different ray‐angle intervals, a more accurate interpretation of anomalies is possible. The second step of our strategy is to develop a good inhomogeneous starting model from joint interpretation of the inversion results from different subsets. The third step is to invert the full data set using this new starting model and to evaluate the inversion results by analyzing the distributions of mean square traveltime residuals with respect to the ray angles. We use a synthetic model with two discrete anomalies located roughly at the same depth to demonstrate and evaluate our approach. This inversion strategy is also applied to a field data set collected to investigate karst cavities in limestone. From the inversion results of both examples, we show that horizontal smearing of anomalies can be reduced by eliminating near‐horizontal rays. A good starting model can be obtained based on the joint interpretation of the inversion results of the different subsets; it leads to a high‐resolution final image of the full data set.

scholarly journals Back in Time for Breakfast: An Analysis of the Changing Breakfast Cereal Aisle

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 489
Author(s):  
Emilie Croisier ◽  
Jaimee Hughes ◽  
Stephanie Duncombe ◽  
Sara Grafenauer
Keyword(s):  
Dietary Fibre ◽  
Saturated Fat ◽  
Health Claims ◽  
Whole Grain ◽  
Breakfast Cereal ◽  
Full Data ◽  
Data Set ◽  
Time Points ◽  
Total Fat ◽  
Over Time

Breakfast cereal improves overall diet quality yet is under constant scrutiny with assertions that the category has not improved over time. This study aimed to comprehensively analyse the category of breakfast cereals, the nutritional values, and health claims across eight distinct sub-categories at four time points (2013, 2015, 2018, and 2020). An audit of products from four major supermarkets in metropolitan Sydney (Aldi, Coles, IGA, and Woolworths) collected ingredient lists, nutrition information, claims and Health Star Rating (HSR) for biscuits and bites; brans; bubbles, puffs, and flakes; granola and clusters; hot cereal flavoured; hot cereal plain; muesli; breakfast biscuits. The median (IQR) were calculated for energy, protein, fat, saturated fat, carbohydrate, sugars, dietary fibre, and sodium for comparisons over time points by nutrient. Data from 2013 was compared with 2020 (by sub-category and then for a sub-section of common products available at each time point). Product numbers between 2013 (n = 283) and 2020 (n = 543) almost doubled, led by granola and clusters. Whole grain cereals ≥ 8 g/serve made up 67% of products (↑114%). While there were positive changes in nutrient composition over time within the full data set, the most notable changes were in the nutrition composition of cereals marketed as the same product in both years (n = 134); with decreases in mean carbohydrate (2%), sugar (10%) and sodium (16%) (p < 0.000), while protein and total fat increased significantly (p = 0.036; p = 0.021). Claims regarding Dietary Fibre and Whole Grain doubled since 2013. Analysis of sub-categories of breakfast cereal assisted in identifying some changes over time, but products common to both timeframes provided a clearer analysis of change within the breakfast category, following introduction of HSR. Whole grain products were lower in the two target nutrients, sodium and sugars, and well-chosen products represent a better choice within this category.

scholarly journals Serum sodium changes in marathon participants who use NSAIDs

2018 ◽  
Vol 4 (1) ◽  
pp. e000364 ◽  
Author(s):  
Steven Whatmough ◽  
Stephen Mears ◽  
Courtney Kipps
Keyword(s):  
Serum Sodium ◽  
Fluid Intake ◽  
Large City ◽  
Control Group ◽  
Full Data ◽  
Data Set ◽  
Nsaid Group ◽  
Total Body ◽  
Average Serum ◽  
Internal And External Factors

IntroductionThe primary mechanism through which the development of exercise-associated hyponatraemia (EAH) occurs is excessive fluid intake. However, many internal and external factors have a role in the maintenance of total body water and non-steroidal anti-inflammatory medications (NSAIDs) have been implicated as a risk factor for the development of EAH. This study aimed to compare serum sodium concentrations ([Na]) in participants taking an NSAID before or during a marathon (NSAID group) and those not taking an NSAID (control group).MethodsParticipants in a large city marathon were recruited during race registration to participate in this study. Blood samples and body mass measurements took place on the morning of the marathon and immediately post marathon. Blood was analysed for [Na]. Data collected via questionnaires included athlete demographics, NSAID use and estimated fluid intake.ResultsWe obtained a full data set for 28 participants. Of these 28 participants, 16 took an NSAID on the day of the marathon. The average serum [Na] decreased by 2.1 mmol/L in the NSAID group, while it increased by 2.3 mmol/L in the control group NSAID group (p=0.0039). Estimated fluid intake was inversely correlated with both post-marathon serum [Na] and ∆ serum [Na] (r=−0.532, p=0.004 and r=−0.405 p=0.032, respectively).ConclusionSerum [Na] levels in participants who used an NSAID decreased over the course of the marathon while it increased in those who did not use an NSAID. Excessive fluid intake during a marathon was associated with a lower post-marathon serum [Na].

scholarly journals Lyman Break Galaxies at Redshiftz∼ 3: Survey Description and Full Data Set

2003 ◽  
Vol 592 (2) ◽  
pp. 728-754 ◽  
Author(s):  
Charles C. Steidel ◽  
Kurt L. Adelberger ◽  
Alice E. Shapley ◽  
Max Pettini ◽  
Mark Dickinson ◽  
...  
Keyword(s):  
Full Data ◽  
Data Set ◽  
Lyman Break Galaxies

Electoral Performance by Post-Rebel Parties

2018 ◽  
Vol 54 (3) ◽  
pp. 415-453 ◽  
Author(s):  
Carrie Manning ◽  
Ian Smith
Keyword(s):  
Legislative Elections ◽  
Full Data ◽  
Data Set ◽  
Factors Affecting ◽  
Future Performance ◽  
Organizational Experience ◽  
Varying Length ◽  
New Research ◽  
Electoral Performance ◽  
Positive Effect

This article explores the factors affecting post-rebel party electoral performance. We present new research tracking the participation of these groups in national legislative elections from 1990 to 2016. Our full data set covers 77 parties and 286 elections in 37 countries. It includes parties formed after conflicts of varying length and intensity, with different incompatibilities, in every region of the world, and in countries with disparate political histories. Our analysis suggests that post-rebel parties’ early electoral performance strongly affects future performance, and that competition – crowd-out by older rival parties – and pre-war organizational experience in politics have a significant positive effect, particularly for those parties that are consistently winning more than about 10 per cent of seats. But especially for parties that consistently win very low seat shares, organizational characteristics yield increasingly to environmental factors, most importantly the presence of rival parties and the barriers to representation presented by electoral rules.

scholarly journals An ensemble approach to simulate CO<sub>2</sub> emissions from natural fires

2014 ◽  
Vol 11 (1) ◽  
pp. 1443-1478
Author(s):  
A. V. Eliseev ◽  
I. I. Mokhov ◽  
A. V. Chernokulsky
Keyword(s):  
Co2 Emissions ◽  
Global Climate Model ◽  
Burnt Area ◽  
Rcp Scenarios ◽  
Data Set ◽  
Natural Fires ◽  
Ensemble Mean ◽  
Rcp 8.5 ◽  
Fire Characteristics ◽  
The Tropics

Abstract. This paper presents ensemble simulations with the global climate model developed at the A. M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences (IAP RAS CM). These simulations were forced by historical reconstruction of external forcings for 850–2005 AD and by the Representative Concentration Pathways (RCP) scenarios till year 2300. Different ensemble members were constructed by varying the governing parameters of the IAP RAS CM module to simulate natural fires. These members are constrained by the GFED–3.1 observational data set and further subjected to Bayesian averaging. This approach allows to select only changes in fire characteristics which are robust within the constrained ensemble. In our simulations, the present-day (1998–2011 AD) global area burnt due to natural fires is (2.1 ± 0.4) × 106 km2 yr−1 (ensemble means and intra-ensemble standard deviations are presented), and the respective CO2 emissions in the atmosphere are (1.4 ± 0.2) PgC yr−1. The latter value is in agreement with the corresponding observational estimates. Regionally, the model underestimates CO2 emissions in the tropics; in the extra-tropics, it underestimates these emissions in north-east Eurasia and overestimates them in Europe. In the 21st century, the ensemble mean global burnt area is increased by 13% (28%, 36%, 51%) under scenario RCP 2.6 (RCP 4.5, RCP 6.0, RCP 8.5). The corresponding global emissions increase is 14% (29%, 37%, 42%). In the 22nd–23rd centuries, under the mitigation scenario RCP 2.6 the ensemble mean global burnt area and respective CO2 emissions slightly decrease, both by 5% relative to their values in year 2100. Under other RCP scenarios, these variables continue to increase. Under scenario RCP 8.5 (RCP 6.0, RCP 4.5) the ensemble mean burnt area in year 2300 is higher by 83% (44%, 15%) than its value in year 2100, and the ensemble mean CO2 emissions are correspondingly higher by 31% (19%, 9%). All changes of natural fire characteristics in the 21st–23rd centuries are associated mostly with the corresponding changes in boreal regions of Eurasia and North America. However, under the RCP 8.5 scenario, increase of the burnt area and CO2 emissions in boreal regions during the 22nd–23rd centuries are accompanied by the respective decreases in the tropics and subtropics.

scholarly journals Association of RASSF1A, DCR2, and CASP8 Methylation with Survival in Neuroblastoma: A Pooled Analysis Using Reconstructed Individual Patient Data

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Waleed M. Hassan ◽  
Mohamed S. Bakry ◽  
Timo Siepmann ◽  
Ben Illigens
Keyword(s):  
Overall Survival ◽  
Individual Patient Data ◽  
Wide Spectrum ◽  
Pooled Analysis ◽  
Patient Data ◽  
Epigenetic Alterations ◽  
Full Data ◽  
Data Set ◽  
Kaplan Meier ◽  
Registration Number

Neuroblastoma (NB) is a heterogeneous tumor affecting children. It shows a wide spectrum of clinical outcomes; therefore, development of risk stratification is critical to provide optimum treatment. Since epigenetic alterations such as DNA methylation have emerged as an important feature of both development and progression in NB, in this study, we aimed to quantify the effect of methylation of three distinct genes (RASSF1A, DCR2, and CASP8) on overall survival in NB patients. We performed a systematic review using PubMed, Embase, and Cochrane libraries. Individual patient data was retrieved from extracted Kaplan–Meier curves. Data from studies was then merged, and analysis was done on the full data set. Seven studies met the inclusion criteria. Methylation of the three genes had worse overall survival than the unmethylated arms. Five-year survival for the methylated arm of RASSF1A, DCR2, and CASP8 was 63.19% (95% CI 56.55-70.60), 57.78% (95% CI 47.63-70.08), and 56.39% (95% CI 49.53-64.19), respectively, while for the unmethylated arm, it was 93.10% (95% CI 87.40–99.1), 84.84% (95% CI 80.04-89.92), and 83.68% (95% CI 80.28-87.22), respectively. In conclusion, our results indicate that in NB patients, RASSF1A, DCR2, and CASP8 methylation is associated with poor prognosis. Large prospective studies will be necessary to confirm definitive correlation between methylation of these genes and survival taking into account all other known risk factors. (PROSPERO registration number CRD42017082264).

scholarly journals Prediction of Progestin Affinity for the Human Progesterone Receptor Based on Corrected RBA Data

2018 ◽  
Vol 1 (4) ◽  
pp. e00080
Author(s):  
A.V. Mikurova ◽  
V.S. Skvortsov
Keyword(s):  
Progesterone Receptor ◽  
Prediction Equation ◽  
Binding Activity ◽  
Data Sets ◽  
Data Set ◽  
The Third ◽  
Relative Binding ◽  
Human Progesterone Receptor ◽  
Nuclear Progesterone Receptor

The modeling of complexes of 3 sets of steroid and nonsteroidal progestins with the ligand-binding domain of the nuclear progesterone receptor was performed. Molecular docking procedure, long-term simulation of molecular dynamics and subsequent analysis by MM-PBSA (MM-GBSA) were used to model the complexes. Using the characteristics obtained by the MM-PBSA method two data sets of steroid compounds obtained in different scientific groups a prediction equation for the value of relative binding activity (RBA) was constructed. The RBA value was adjusted so that in all samples the actual activity was compared with the progesterone activity. The third data set of nonsteroidal compounds was used as a test. The resulted equation showed that the prediction results could be applied to both steroid molecules and nonsteroidal progestins.

Mixing in Axial Flow Compressors: Part I — Test Facilities and Measurements in a Four-Stage Compressor

1990 ◽  
Author(s):  
Y. S. Li ◽  
N. A. Cumpsty
Keyword(s):  
Axial Flow ◽  
Single Stage ◽  
Two Dimensional ◽  
Similar Magnitude ◽  
Low Speed ◽  
The Third ◽  
Mixing Coefficients ◽  
Experimental Facilities ◽  
Axial Flow Compressors

The mechanism of mixing in axial flow compressors has been investigated in two low speed machines. For reasons of length this is described in two parts. Results in a 4-stage compressor are described here in Part I and show that the mixing coefficients across the first and the third stators are of similar magnitude. Part I also describes the background and experimental facilities and techniques used in both parts together with the nomenclature and all the references. Part II describes the results from a large single stage compressor. It also presents measurements of mixing in a simple two-dimensional duct, and presents conclusions for the whole investigation.

Thermal measurements of a rail-cask-size pipe-calorimeter in jet fuel fires

2013 ◽  
Vol 23 (4) ◽  
pp. 300-319
Author(s):  
M. Greiner ◽  
M. del Valle ◽  
C. Lopez ◽  
V. Figueroa
Keyword(s):  
Jet Fuel ◽  
Thermal Measurements
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