城口桑拿

Report Harvey Had Significant Psychological Repercussions On Harris County Residents

first_img Share – / 17A report released this week by UTHealth found that the devastation caused by Hurricane Harvey last year had significant psychological repercussions on Harris County residents because they faced unmet needs ranging from finding temporary and permanent housing to repairing damages to their homes, even months after the storm hit the county and other parts of Texas.The report, sponsored by UTHealth and compiled by the Institute for Health Policy at the School of Public Health, drew data from a mobile device survey of 500 Harris County residents, ages 18 to 54, who were surveyed in late December 2017 and early January 2018. That is four months after Harvey.Other unmet needs cited in the report are getting needed medical care, getting transportation and finding a job.The report makes reference to the concept of serious psychological distress (SPD) and indicates that 48 percent of the people surveyed by the researchers who had serious damage to their home showed signs of it. As for those whose vehicles were seriously damaged by the storm, 37 percent of the people who took part in the survey showed signs of SPD.“Even though recovery around us looks to be moving at a quick pace, a fairly high percentage of people are still looking for alternative housing or have substantial unmet needs,” said Stephen Linder, co-author of the report and director of the Institute for Health Policy at UTHealth School of Public Health.Photo: UTHealthStephen Linder, is the director of the Institute for Health Policy at UTHealth School of Public Health and one of the authors of the report.The researchers also found that 22 percent of those surveyed reported either a worsening of existing chronic conditions or new illnesses or injuries at the time of the flooding, including physical injuries, infections and respiratory problems.At the same time, according to the findings made by the researchers, only 30 percent of those who experienced damage to either their home or vehicle and presented signs of SPD considered mental health care a pressing need.– / 115For Dr. Dritana Marko, one of the report’s co-authors, the reason for mental health not being a priority for the majority of the people surveyed could be two-fold.“First, not all people who experience signs of SPD recognize it as a problem that needs addressing. Second, even when getting mental health care is recognized as a need, in terms of priorities, something else might take precedent, such as repairing a home, replacing a car or applying for disaster assistance,” noted Marko, who is a faculty associate member in the Institute for Health Policy at UTHealth School of Public Health in San Antonio.last_img read more

New survey suggests far fewer Jupiter sized rogue planets than thought

first_img Explore further Back in 2011, an international team of researchers conducted a study of rogue planets and reported evidence suggesting that there are approximately twice as many rogue Jupiters as main sequence stars. In this new effort, the researchers took a new census gain a more accurate estimate.Identifying rogue planets is difficult, of course, because they do not emit any light of their own—against the black of space, there is nothing to see. But when they move past light emitted from a distant star, a lensing phenomenon can occur. This happens when light from the blocked star is magnified by the planet’s gravity, causing a lensing halo effect that can be seen by instruments here on Earth. The size of the planet can also be calculated by noting the lensing duration. The researchers with this new census winnowed down the millions of stars in the dataset to just 2,617 high-quality microlensing events. This represented a much larger sample size than the one used by the team in 2011—they analyzed just 474 events.The researchers conclude that Jupiter-sized rogue planets are far rarer than the earlier census claimed. But they note it is possible that are more Earth-sized rogue planets roaming around than currently believed. The data also showed that of the big rogue planets roaming the Milky Way, approximately 25 percent of them are likely gas giants, with the remaining 75 percent represented by rocky or ice giants. Citation: New survey suggests far fewer Jupiter sized rogue planets than thought (2017, July 25) retrieved 18 August 2019 from https://phys.org/news/2017-07-survey-jupiter-sized-rogue-planets.html An artist’s impression of a gravitational microlensing event by a free-floating planet. Credit: J. Skowron / Warsaw University Observatory © 2017 Phys.org Simulations suggest Planet Nine may have been a rogue More information: Przemek Mróz et al. No large population of unbound or wide-orbit Jupiter-mass planets, Nature (2017). DOI: 10.1038/nature23276Planet formation theories predict that some planets may be ejected from their parent systems as result of dynamical interactions and other processes. Unbound planets can also be formed through gravitational collapse, in a way similar to that in which stars form. A handful of free-floating planetary-mass objects have been discovered by infrared surveys of young stellar clusters and star-forming regions as well as wide-field surveys, but these studies are incomplete for objects below five Jupiter masses. Gravitational microlensing is the only method capable of exploring the entire population of free-floating planets down to Mars-mass objects, because the microlensing signal does not depend on the brightness of the lensing object. A characteristic timescale of microlensing events depends on the mass of the lens: the less massive the lens, the shorter the microlensing event. A previous analysis of 474 microlensing events found an excess of ten very short events (1–2 days)—more than known stellar populations would suggest—indicating the existence of a large population of unbound or wide-orbit Jupiter-mass planets (reported to be almost twice as common as main-sequence stars). These results, however, do not match predictions of planet-formation theories and surveys of young clusters. Here we analyse a sample of microlensing events six times larger than that of ref. 11 discovered during the years 2010–15. Although our survey has very high sensitivity (detection efficiency) to short-timescale (1–2 days) microlensing events, we found no excess of events with timescales in this range, with a 95 per cent upper limit on the frequency of Jupiter-mass free-floating or wide-orbit planets of 0.25 planets per main-sequence star. We detected a few possible ultrashort-timescale events (with timescales of less than half a day), which may indicate the existence of Earth-mass and super-Earth-mass free-floating planets, as predicted by planet-formation theories. Journal information: Nature (Phys.org)—A team of researchers with Warsaw University Observatory, Ohio State University and the University of Warwick has found evidence that suggests there are far fewer Jupiter-sized rogue planets roaming the Milky Way galaxy than prior surveys have shown. In their paper published in the journal Nature, the group describes using data compiled from the Optical Gravitational Lensing Experiment to analyze light curves of approximately 50 million stars for the period 2010 to 2015 and what they found by doing so. The gravity of a free-floating planet may deflect and focus light from a distant source star when passing closely in front of it. Owing to the distorted image the star temporarily seems much brighter. Credit: J. Skowron / Warsaw University Observatory The researchers conclude by suggesting their findings jibe with logic—there are likely to be fewer rogue giant planets because they would have a stronger gravitational connection to their original star system. Smaller, Earth-like planets, on the other hand, could be flung off with relative ease. This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.last_img read more