1,450 research outputs found
Maga, Memes, and Magnificent Hair: How Have Alt-Right, White Supremacy, and White Nationalism Become Rooted in American History?
The purpose of this inquiry is to ascertain the level of prevalence of white nationalist rhetoric and sociocultural artifacts in contemporary political discourse as well as the level of normalcy is has achieved. Additionally, I will generate a timeline that will chronicle the growth and progression of this movement to our current political era, highlighting major schisms, shifts, and events with alterations in fashion and physical presentation. I believe that my research will show not only a long-standing tradition of white nationalism within the United States but also that such rhetoric has slowly been creeping into mainstream political rhetoric and has become increasingly bolder with the most recent presidential election
MAGA, Memes and Magnificent Hair: How White Nationalism Become Rooted in American History
This work seeks to analyze the history of white nationalist ideologies in American political history and compare them to the current political environment today. The primary analysis rests on the rhetoric used, clothing chosen and cultural artifacts that have been appropriated by white nationalists in attempts to further their cause
Can Trump Be Stumped?
Op Eds, or opinion editorials, are typically published in daily newspapers and can raise awareness about a particular topic or aim to persuade others. For this project each student wrote an op-ed in which they presented their opinion or thoughts about the issue of islamophobic discourse coming from Republican candidates, especially Donald Trump
Isometries and the double copy
In the standard derivation of the Kerr-Schild double copy, the geodicity of
the Kerr-Schild vector and the stationarity of the spacetime are presented as
assumptions that are necessary for the single copy to satisfy Maxwell's
equations. However, it is well known that the vacuum Einstein equations imply
that the Kerr-Schild vector is geodesic and shear-free, and that the spacetime
possesses a distinguished vector field that is simultaneously a Killing vector
of the full spacetime and the flat background, but need not be timelike with
respect to the background metric. We show that the gauge field obtained by
contracting this distinguished Killing vector with the Kerr-Schild graviton
solves the vacuum Maxwell equations, and that this definition of the
Kerr-Schild double copy implies the Weyl double copy when the spacetime is
Petrov type D. When the Killing vector is taken to be timelike with respect to
the background metric, we recover the familiar Kerr-Schild double copy, but the
prescription is well defined for any vacuum Kerr-Schild spacetime and we
present new examples where the Killing vector is null or spacelike. While most
examples of physical interest are type D, vacuum Kerr-Schild spacetimes are
generically of Petrov type II. We present a straightforward example of such a
spacetime and study its double copy structure. Our results apply to real
Lorentzian spacetimes as well as complex spacetimes and real spacetimes with
Kleinian signature, and provide a simple correspondence between real and
self-dual vacuum Kerr-Schild spacetimes. This correspondence allows us to study
the double copy structure of a self-dual analog of the Kerr spacetime. We
provide evidence that this spacetime may be diffeomorphic to the self-dual
Taub-NUT solution.Comment: 28 pages; Matches version to appear in JHE
A preliminary report on the contact-independent antagonism of Pseudogymnoascus destructans by Rhodococcus rhodochrous strain DAP96253.
BackgroundThe recently-identified causative agent of White-Nose Syndrome (WNS), Pseudogymnoascus destructans, has been responsible for the mortality of an estimated 5.5 million North American bats since its emergence in 2006. A primary focus of the National Response Plan, established by multiple state, federal and tribal agencies in 2011, was the identification of biological control options for WNS. In an effort to identify potential biological control options for WNS, multiply induced cells of Rhodococcus rhodochrous strain DAP96253 was screened for anti-P. destructans activity.ResultsConidia and mycelial plugs of P. destructans were exposed to induced R. rhodochrous in a closed air-space at 15°C, 7°C and 4°C and were evaluated for contact-independent inhibition of conidia germination and mycelial extension with positive results. Additionally, in situ application methods for induced R. rhodochrous, such as fixed-cell catalyst and fermentation cell-paste in non-growth conditions, were screened with positive results. R. rhodochrous was assayed for ex vivo activity via exposure to bat tissue explants inoculated with P. destructans conidia. Induced R. rhodochrous completely inhibited growth from conidia at 15°C and had a strong fungistatic effect at 4°C. Induced R. rhodochrous inhibited P. destructans growth from conidia when cultured in a shared air-space with bat tissue explants inoculated with P. destructans conidia.ConclusionThe identification of inducible biological agents with contact-independent anti- P. destructans activity is a major milestone in the development of viable biological control options for in situ application and provides the first example of contact-independent antagonism of this devastating wildlife pathogen
Comparative Outcomes of Autologous Chondrocyte Implantation and Osteochondral Allograft Transplantation with Patellar Realignment for Patellar Instability with Associated Cartilage Defects
Abstract Background: Articular cartilage pathology can stem from a spectrum of etiologies including osteochondritis dissecans, avascular necrosis, degenerative joint disease, and injury resulting from recurrent instability of the patella.
Hypothesis/Purpose: The purpose of this study was to identify differences in clinical and functional outcomes in patients treated with either ACI or OCA transplantation for chondral defects with concomitant MPFL reconstruction and tibia tubercle osteotomy.
Study Design: Retrospective Cohort Study
Methods: A retrospective review identified patients who underwent autologous chondrocyte implantation (ACI) or osteochondral allograft (OCA) transplantation with concomitant medial patellofemoral ligament (MPFL) reconstruction and tibia tubercle osteotomy (TTO). Outcome measures included the Knee Injury and Osteoarthritis Outcome Score for Joint Replacement (KOOS JR), International Knee Documentation Committee (IKDC) evaluation, and Short Form Health Survey (SF-12) physical scores, all collected a minimum of 2 years after surgery. Defect location, size, complications, and rate of subsequent surgery were determined.
Results: Eighteen patients (11 ACI and 7 OCA) were included in this study to analyze clinical and functional outcomes following surgical correction of 23 chondral defects (ACI n=12, OCA n=10). Defects had comparable baseline characteristics in each group including size measured during index arthroscopy (3.34 cm2 vs 4.03 cm2, P = .351), Outerbridge classification (54.8% grade 4 vs 60.0% grade 4, P = 1.000), and AMADEUS score (47.1 vs 58.6, P = .298). Postoperative outcomes were comparable including revision rate (15.4% vs 10.0%, P=1.000) and 2-year IKDC scores (74.2 vs 51.2, P = .077). However, ACI did have significantly higher 2-year KOOS JR (85.1 vs 63.7, P = .031) and SF-12 scores (54.1 vs 42.6, P = .007) compared to OCA.
Conclusion: ACI or OCA transplantation for chondral defects with concomitant MPFL reconstruction and TTO can be safely performed in an outpatient setting with functional and clinical outcomes being comparable. Functional scores including KOOS JR and SF-12 were shown to be significantly higher at 2-year follow-up in the ACI cohort, however, postoperative IKDC scores, rates of revisions, and clinical evaluations were comparable between cohorts
HST Grism Observations of a Gravitationally Lensed Redshift 10 Galaxy
We present deep spectroscopic observations of a Lyman-break galaxy candidate
(hereafter MACS1149-JD) at with the Space
Telescope () WFC3/IR grisms. The grism observations were taken at
4 distinct position angles, totaling 34 orbits with the G141 grism, although
only 19 of the orbits are relatively uncontaminated along the trace of
MACS1149-JD. We fit a 3-parameter (, F160W mag, and Ly equivalent
width) Lyman-break galaxy template to the three least contaminated grism
position angles using an MCMC approach. The grism data alone are best fit with
a redshift of ( confidence), in
good agreement with our photometric estimate of
( confidence). Our analysis
rules out Lyman-alpha emission from MACS1149-JD above a equivalent
width of 21 \AA{}, consistent with a highly neutral IGM. We explore a scenario
where the red /IRAC color of the galaxy
previously pointed out in the literature is due to strong rest-frame optical
emission lines from a very young stellar population rather than a 4000 \AA{}
break. We find that while this can provide an explanation for the observed IRAC
color, it requires a lower redshift (), which is less preferred
by the imaging data. The grism data are consistent with both
scenarios, indicating that the red IRAC color can still be explained by a 4000
\AA{} break, characteristic of a relatively evolved stellar population. In this
interpretation, the photometry indicate that a Myr stellar
population is already present in this galaxy only after
the Big Bang.Comment: Accepted to ApJ. This is the accepted versio
Cost-effectiveness of irbesartan in diabetic nephropathy: a systematic review of published studies
Background. To review published studies on the cost-effectiveness of the use of irbesartan for treatment of advance overt nephropathy in patients with type 2 diabetes and hypertension. Methods. Articles were identified based on a search of the PubMed databases using the keywords ‘irbesartan', ‘ESRD', ‘cost-effectiveness', ‘nephropathy' and ‘costs', and by personal communication with the authors. Only studies published in the last 10 years were included. All costs data from the cost-effectiveness studies were inflated to 2003 Euros using published governmental conversion tables. Results. Seven published studies were identified, spanning the following country settings: the US, Belgium and France, Germany, Hungary, Italy, Spain, and the UK. In each, the same pharmacoeconomic model was adapted using country-specific data to project and evaluate the clinical and cost outcomes of the treatment arms of the Irbesartan in Diabetic Nephropathy Trial (IDNT) (irbesartan, amlodipine or standard blood pressure control). Mean time to onset of ESRD was 8.23 years for irbesartan, 6.82 years for amlodipine and 6.88 years for the control (values were the same for Belgium, France, Germany, Hungary, Italy and Spain as transition probabilities for progression to ESRD were all derived from the IDNT). Mean cumulative incidence of ESRD was 36% with irbesartan, 49% with amlodipine and 45% with control treatment. Treatment with irbesartan was projected to improve life expectancy compared to both amlodipine and control in all seven published studies. Analysis of total lifetime costs showed that irbesartan treatment was cost saving compared to the other two treatment regimens, due to the associated reduction in ESRD cases. Cost savings with irbesartan became evident very early; after 2-3 years of treatment in most settings. Conclusions. Modelling studies based on the IDNT published to date suggest that irbesartan treatment in patients with type 2 diabetes, hypertension and advanced nephropathy is both life- and cost-saving compared to amlodipine or contro
Pre-Erythrocytic Vaccine Candidates in Malaria
A vaccine providing sterile immunity against malaria has been shown to be possible with antigens from the pre-erythrocytic stages of malaria. Therefore, it is reasonable to focus vaccine development efforts on the pre-erythrocytic stages, consisting of both sporozoites and liver stage parasites, where it is expected that sterile immunity against the parasite can be elicited to block the development of blood stage infection, clinical disease, and resulting parasite transmission. Accordingly, we will review the preclinical and clinical studies of malaria pre-erythrocytic efforts as well as highlight the advances, trends, and roadblocks encountered in these efforts
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