Extracting Temporal Expressions from Unstructured Open Resources

AETAS is an end-to-end system with SOA approach that retrieves plain text data from web and blog news and represents and stores them in RDF, with a special focus on their temporal dimension. The system allows users to acquire, browse and query Linked Data obtained from unstructured sources

The prevalence of allergic reaction in acute complications of injection of packed red blood cell in patients hospitalized in Sina Hospital, Kamyaran City, Iran, during the years 2014-2018

BACKGROUND: Acute complications are among the most common complications in blood transfusion reactions and one of the leading causes of death. The reduction in acute complications as well as blood safety and health of patients should be considered. The aim of this short report study is to determine the prevalence of allergic reactions in acute complications of packed red blood cell (RBC) injections in patients hospitalized in Sina Hospital, Kamyaran City, Iran, from 2014 to 2018.METHODS: This was a retrospective cross-sectional study with the statistical population including all patients who required blood transfusion in Sina hospital in Kamyaran City since 2014 to 2018. The standard checklist called "A form of reporting unwanted complications after blood transfusions and its related products" was used in this study. Data were entered into the SPSS statistical software. Descriptive statistics were analyzed as mean and standard deviation (SD) and analytical results were analyzed using Fisher's exact test.RESULTS: In this study, the prevalence of transfusion complications during this period was 0.016. 5 (29%) and 12 (71%) of the patients were men and women, respectively. The most common sign of blood transfusion included restlessness and tachycardia. The most common acute complication of blood transfusions was allergic reaction (47%). Based on the Fisher's exact test, a statistically significant relationship was found between the blood group, sex, and history of injection with the diagnosis of transfusion (P < 0.001).CONCLUSION: Registering the complications of blood transfusion is always a concern and important for the blood transfusion organization. In this study, it was found that the most common acute complication of blood transfusions was allergic reactions (8 out of 17)

The frequency of substance abuse tendency and its related factors among high school students in Divandarreh City, Iran, in year 2018

BACKGROUND: Adolescence is the most risky part of life for beginning of substance abuse. Substance use in adolescence can affect the rest of the person's life in addition to his youth. The purpose of this study was to determine the frequency of substance abuse and its related factors among high school students in the city of Divandarreh, Kurdistan Province, Iran, in 2018.METHODS: This was a cross-sectional study. The statistical population consisted of all high school students (16-18 years old) in Divandarreh City in 2018. The sample size was 386. The instruments of this study were demographic information and Zargar et al. addiction questionnaires. Data were entered into SPSS software and chi-square test was used to evaluate the analytical data.RESULTS: According to the results, 279 (75%) of students had low addiction tendency, 66 (17%) had moderate addiction tendency, and 25 (6%) tended to severe addiction. 117 students (31%) had at least one experience of using alcohol, smoking, drugs, and other substances and 53 (15%) claimed daily consumption of substances and drugs. There was a significant relationship between sex (P = 0.001), father's education (P = 0.028), mother's education (P = 0.011), father's job (P = 0.001), educational grade (P = 0.002), economic status (P < 0.001), and average of study (P = 0.019) with substance abuse tendency.CONCLUSION: According to the results of this study, providing a quiet and full of confidence environment for adolescents should be one of the fundamental priorities of each family. In addition to this result, parents' educational growth leads to less willingness of children to addiction

Analysis of unsteady mixed convection of Cu–water nanofluid in an oscillatory, lid-driven enclosure using lattice Boltzmann method

The unsteady physics of laminar mixed convection in a lid-driven enclosure filled with Cu–water nanofluid is numerically investigated. The top wall moves with constant velocity or with a temporally sinusoidal function, while the other walls are fixed. The horizontal top and bottom walls are, respectively, held at the low and high temperatures, and the vertical walls are assumed to be adiabatic. The governing equations along with the boundary conditions are solved through D2Q9 fluid flow and D2Q5 thermal lattice Boltzmann network. The effects of Richardson number and volume fractions of nanoparticles on the fluid flow and heat transfer are investigated. For the first time in the literature, the current study considers the mechanical power required for moving the top wall of the enclosure under various conditions. This reveals that the power demand increases if the enclosure is filled with a nanofluid in comparison with that with a pure fluid. Keeping a constant heat transfer rate, the required power diminishes by implementing a temporally sinusoidal velocity on the top wall rather than a constant velocity. Reducing frequency of the wall oscillation leads to heat transfer enhancement. Similarly, dropping Richardson number and raising the volume fraction of the nanoparticles enhance the heat transfer rate. Through these analyses, the present study provides a physical insight into the less investigated problem of unsteady mixed convection in enclosures with oscillatory walls

Extracting Temporal Expressions from Unstructured Open Resources

AETAS is an end-to-end system with SOA approach that retrieves plain text data from web and blog news and represents and stores them in RDF, with a special focus on their temporal dimension. The system allows users to acquire, browse and query Linked Data obtained from unstructured sources

Extracting Temporal Expressions from Unstructured Open Resources

AETAS is an end-to-end system with SOA approach that retrieves plain text data from web and blog news and represents and stores them in RDF, with a special focus on their temporal dimension. The system allows users to acquire, browse and query Linked Data obtained from unstructured sources

A new approach for the analysis of the nanoparticles effects on Cu-water nanofluid mixed convection heat transfer and required power in a lid-driven cavity

In this paper, a new approach is used for numerical analysis of the sole effects of nanoparticles volume fraction of Cu-water nanofluid on laminar mixed and natural convection heat transfer in a 2D cavity. Horizontal walls are insulated and fixed, and vertical walls are maintained at constant temperature. Vertical walls are considered for both fixed and moving conditions. Some researchers have studied flow and heat transfer of nanofluid in a lid-driven cavity, keeping fixed both Ri and Gr. They found that by the increase of nanoparticles volume fraction, Nu number increases, then from this result they concluded the total heat transfer increases from the walls. It is shown that total heat transfer obtained from the Nu number by the mentioned approach results from not only the nanoparticles volume fraction increase but also temperature difference and walls velocity increases. Thus, this approach is not appropriate to study the sole effects of nanoparticles volume fractions on the mixed convection heat transfer. Using the new approach, it is shown that in order to have specific heat transfer rate from the walls, base fluid (water) needs less power for moving the wall than cu-nanofluid. Therefore, the usage of Cu-water nanofluid is not recommended to increase mixed convection heat transfer in a lid-driven cavity. Moreover, using this new approach, it is shown that the increase of nanoparticles volume fraction reduces natural convection heat transfer, which is contradictory to the previous studies. Thus, its usage is not recommended for this case as well

Heat and mass transfer and thermodynamic analysis of power-law fluid flow in a porous microchannel

Transfer of heat and mass and thermodynamic irreversibilities are investigated in a porous, parallel-plate microreactor in which the working fluid is non-Newtonian. The investigated microreactor features thick flat walls with uneven thicknesses, which can be subject to different thermal loads. The dimensionless governing equations of the resultant asymmetric problem are first derived theoretically and then solved numerically by using a finite volume technique. This results in two-dimensional solutions for the velocity, temperature and concentration fields as well as the distributions of Nusselt number and local and total entropy generations. The results clearly demonstrate the significance of the numerical value of the power-law index and departure from Newtonian behavior of the fluid. In particular, it is shown that by increasing the value of power-law index the Nusselt number on the wall decreases. This leads to the intensification of the temperature gradients in the system and therefore magnifies the local and total entropy generations. Also, it is shown that the wall thickness and thermal asymmetry can majorly affect the heat transfer process and thermodynamic irreversibility of the microreactor. It is noted that the current work is the first comprehensive study of heat transfer and entropy generation in porous micro-chemical reactor with non-Newtonian, power-law fluid