2,204 research outputs found
The Potential Effects of Hormonal Therapy and Stress on the Oral Health of the Transitioning Population
Problem: In terms of healthcare, the transgender population is underserved. Unfortunately, these individuals often experience stress related to seeking preventative care and fear discrimination. These factors preventing them from seeking care, in addition to hormone therapy taken during the transition process, could have severe impacts on their dental health. The purpose of this study is to establish a link between the hormone therapy used during gender transitioning and the effect on oral health. While there is a correlation between hormone replacement therapy and clinical evidence that sex hormones can impact on periodontal tissues, few studies have linked this knowledge to the healthcare needs of the transitioning population.
Methods: Research was obtained from PubMed, the database of Dental and Oral Sciences Sources, Google Scholar, and LGBTQ+ databases. Recent studies and literature reviews were analyzed to determine if there was a correlation between hormone therapy and the health of the oral cavity. All sources found were published within five years.
Major Findings: Many studies have revealed that there is an effect on sex hormones on the oral cavity. If it can happen to those that are taking sex hormone then there has to be a correlation to those who are transitioning taking the same hormone. Few studies have been conducted proving this correlation; this topic deserves more research and investigation.
Conclusions: There is a clinical correlation between hormone replacement therapy and sex hormones and their effects on the oral cavity. Therefore, there is a possible correaltion to the transgender population that is taking hormones. As this population continues to grow, and more individuals identify as a part of the community, it is important to continue to research this topic.https://scholarscompass.vcu.edu/denh_student/1018/thumbnail.jp
Control of the Colorado Potato Beetle (Coleoptera: Chrysomelidae) on Tomatoes with \u3ci\u3eBacillus Thuringiensis\u3c/i\u3e Var. \u3ci\u3eThuringiensis\u3c/i\u3e
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The Colorado potato beetle, Leptinotarsa decemlineata (Say), is a serious pest of tomatoes grown in this country. This beetle is also developing resistance to several classes of chemical insecticides including most of the carbamates, chlorinated hydrocarbons, and organophosphates (Forgash 1981). and most recently to the pyrethroids. According to figures in a report released by Schwartz and Klassen (1981). the value of the tomato crop in the CSA in 1978 was placed at $914,121,000 and crop loss due to Colorado potato beetle (CPB) damage alone would be 93% of its value if no control were undertaken. These figures along with the fact that the CPB is developing resistance dictate the need for. and development of, alternative control measures
Transition and mixing in axisymmetric jets and vortex rings
A class of impulsively started, axisymmetric, laminar jets produced by a time dependent joint source of momentum are considered. These jets are different flows, each initially at rest in an unbounded fluid. The study is conducted at three levels of detail. First, a generalized set of analytic creeping flow solutions are derived with a method of flow classification. Second, from this set, three specific creeping flow solutions are studied in detail: the vortex ring, the round jet, and the ramp jet. This study involves derivation of vorticity, stream function, entrainment diagrams, and evolution of time lines through computer animation. From entrainment diagrams, critical points are derived and analyzed. The flow geometry is dictated by the properties and location of critical points which undergo bifurcation and topological transformation (a form of transition) with changing Reynolds number. Transition Reynolds numbers were calculated. A state space trajectory was derived describing the topological behavior of these critical points. This state space derivation yielded three states of motion which are universal for all axisymmetric jets. Third, the axisymmetric round jet is solved numerically using the unsteady laminar Navier Stokes equations. These equations were shown to be self similar for the round jet. Numerical calculations were performed up to a Reynolds number of 30 for a 60x60 point mesh. Animations generated from numerical solution showed each of the three states of motion for the round jet, including the Re = 30 case
Nanometer-scale sharpness in corner-overgrown heterostructures
A corner-overgrown GaAs/AlGaAs heterostructure is investigated with
transmission and scanning transmission electron microscopy, demonstrating
self-limiting growth of an extremely sharp corner profile of 3.5 nm width. In
the AlGaAs layers we observe self-ordered diagonal stripes, precipitating
exactly at the corner, which are regions of increased Al content measured by an
XEDS analysis. A quantitative model for self-limited growth is adapted to the
present case of faceted MBE growth, and the corner sharpness is discussed in
relation to quantum confined structures. We note that MBE corner overgrowth
maintains nm-sharpness even after microns of growth, allowing the realization
of corner-shaped nanostructures.Comment: 4 pages, 3 figure
Reconstruction of contaminant trends in a salt wedge estuary with sediment cores dated using a multiple proxy approach
The Taunton River is a partially mixed tidal estuary in southeastern Massachusetts (USA) which has received significant contaminant inputs, yet little information exists on the history of discharge and the subsequent fate of these contaminants. Three sediment cores taken along a transect were analyzed, reconstructing the spatial and temporal trends of pollution in the estuary. A combination of radiometric dating, contaminant markers, and storm layers from major hurricanes were used to establish age models and sedimentation rates. Age estimates obtained from the different dating methods compared well, establishing an accurate history of contaminant release to the estuary. Polycyclic aromatic hydrocarbons (PAHs) were present in one core at depths corresponding to the early 1860s, earlier than previously established dates of introduction. Temporal and spatial trends of Cr, Cu, Hg and Pb indicated multiple sources of varying input to the river. Polychlorinated biphenyls (PCBs) were present in each of the cores from the 1930s onward, with elevated levels still present in surficial sediments at several sites. A unique organic compound, Topanol, which was produced locally was used as a tracer to track contaminant transport in the river. Tracer data indicates that contaminants are still being transported and deposited to surficial sediments at high concentrations well after their discharge. This reconstruction demonstrates the utility of using multiple dating proxies where often the sole use of radiometric dating techniques is not an option and provides insights into the fate of contaminants discharged decades ago but continue to represent environmental risks
LR characterization of chirotopes of finite planar families of pairwise disjoint convex bodies
We extend the classical LR characterization of chirotopes of finite planar
families of points to chirotopes of finite planar families of pairwise disjoint
convex bodies: a map \c{hi} on the set of 3-subsets of a finite set I is a
chirotope of finite planar families of pairwise disjoint convex bodies if and
only if for every 3-, 4-, and 5-subset J of I the restriction of \c{hi} to the
set of 3-subsets of J is a chirotope of finite planar families of pairwise
disjoint convex bodies. Our main tool is the polarity map, i.e., the map that
assigns to a convex body the set of lines missing its interior, from which we
derive the key notion of arrangements of double pseudolines, introduced for the
first time in this paper.Comment: 100 pages, 73 figures; accepted manuscript versio
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Emotional health in adolescents with and without a history of specific language impairment (SLI)
Objective:  This study examined the emotional health of adolescents with and without specific language impairment (SLI).
Method:  One hundred and thirty-nine adolescents with a history of SLI (15;10 years) and a peer group of 124 adolescents with normal language development (NLD) (15;11 years) participated, who were in their final year of compulsory schooling. The risk of emotional difficulties was assessed using the Moods and Feelings Questionnaire (MFQ) and the Child Manifest Anxiety Scale-R (CMAS-R). Comprehensive language and cognition data were available for all participants (NLD and SLI) concurrently and also longitudinally for those with SLI.
Results:  A clear increased risk of emotional health symptoms was found for the SLI group on both self- and parental-report. Girls scored less favourably than boys when groups were combined, but these were due to the effect of the NLD group, with no gender differences found in the SLI group. Direct links with language and cognition were not obvious. Instead, more diffuse factors such as family history of emotional health difficulties may warrant further investigation.
Conclusion:  There is a marked higher rate of anxiety and depression symptoms in adolescents with SLI. However, these do not appear to be a direct result of impoverished communicative experiences
Parents’ Acute Illnesses, Hospitalizations, and Medication Changes During the Difficult First Year After Infant or Child NICU/PICU Death
Infant/child death is described as a most stressful life event; however, there are few reports of effects on parent physical health during the first year after the death. The study\u27s purpose is to examine the patterns of parent acute illnesses, hospitalizations, and medication changes over 1 to 13 months after neonatal intensive care unit (NICU) or pediatric intensive care unit (PICU) infant/child death in 3 racial/ethnic groups. METHODS:
Secondary analyses were conducted with longitudinal data on parent health and functioning 1 to 13 months after infant/child NICU/PICU death. Parents (176 mothers, 73 fathers; 44% Hispanic, 35% black non-Hispanic, and 21% white non-Hispanic) of deceased infants/children were recruited from 4 children\u27s hospitals and state death records. Inclusion criteria-parents understood English or Spanish and had a deceased neonate/child ≤ 18. Exclusion criteria -deceased newborn from multiple gestation pregnancy, child in foster care, child\u27s injury due to suspected abuse, or parent death in illness/injury event. Parents reported numbers and types of acute illnesses, hospitalizations, and medication changes 1 to 13 months postdeath. RESULTS:
Parents\u27 acute illnesses, hospitalizations, and medication changes were greatest between months 1 and 6, with relative quiescence in months 7 to 10, and an increase in months 11 to 13. Mothers (aged 32 ± 7.8 years) reported 300 acute illnesses (primarily colds/flu, headaches, anxiety/depression, and infections) and 89 hospitalizations (primarily infections, chest pain, and gastrointestinal problems). Fathers (aged 37 ± 8.8 years) reported 104 acute illnesses (colds/flu and headaches) and 9 hospitalizations. CONCLUSION:
After infant/child NICU/PICU death, mothers had greater morbidity than fathers, with no significant differences by race/ethnicity. Parents\u27 health needs to be monitored in months 1 to 6 and months 11 to 13, and interventions targeted to parents in these months
Signatures from a merging galaxy cluster and its AGN population : LOFAR observations of Abell 1682
Reproduced with permission from Astronomy & Astrophysics. © 2019 ESOWe present LOFAR data from 110-180 MHz of the merging galaxy cluster Abell 1682, alongside archival optical, radio, and X-ray data. Our images of 6 arcsec in resolution at low frequencies reveal new structures associated with numerous radio galaxies in the cluster. At a resolution of 20 arcsec we see diffuse emission throughout the cluster over hundreds of kiloparsecs, indicating particle acceleration mechanisms are in play as a result of the cluster merger event and powerful active galactic nuclei. We show that a significant part of the cluster emission is from an old radio galaxy with very steep spectrum emission (having a spectral index of α < -2.5). Furthermore, we identify a new region of diffuse steep-spectrum emission (α < -1.1) as a candidate for a radio halo which is co-spatial with the centre of the cluster merger. We suggest its origin as a population of old and mildly relativistic electrons left over from radio galaxies throughout the cluster which have been re-accelerated to higher energies by shocks and turbulence induced by the cluster merger event. We also note the discovery of six new giant radio galaxies in the vicinity of Abell 1682.Peer reviewedFinal Accepted Versio
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