3,488 research outputs found
Attitudes Toward Contraception Among Fourth Wave College-Aged Women
This research examines how college-aged women today view contraception in comparison to the ways it has been viewed by previous generations of women, as well as what they view the future of contraception in the United States to look like. This has been done through a lens of political action and advocacy, which has defined the fight for access to contraception and reproductive justice throughout history. In light of the recent threats on contraception and the corresponding responsive social movements, such as the Women’s March, women in the United States are shifting their views on the matter, but what actions are they taking?Reproductive health is highly politicized, yet college-aged/millennial women are not accustomed to an administration that attacks contraception and their access to it. In response to the current American political climate, we\u27ve seen an embracing of feminism in the mainstream media and feminist organization, such as the Women\u27s March, but have yet to see any policy change. The question this has led me to explore is whether or not attacks on access to contraception will politically mobilize and unite women. This research is based in interviews with women on the Gettysburg College campus and the analysis of data on racial, geographic, and class disparities in health care/access in order to understand the politicization of contraception in women\u27s lives
Fearless Friday Naima Scott & Caroline Lewis
In this week’s edition of Fearless Friday, SURGE is honoring Naima Scott and Caroline Lewis for all the work they have done in our community as well as working on this year’s Vagina Monologues. [excerpt
Preliminary findings on carbohydrate metabolism of intact equine cumulus-oocyte complexes during in vitro maturation
Conference paper abstrac
Neutropenia as an adverse event following vaccination : results from randomized clinical trials in healthy adults and systematic review
Background : In the context of early vaccine trials aimed at evaluating the safety profile of novel vaccines, abnormal haematological values, such as neutropenia, are often reported. It is therefore important to evaluate how these trials should be planned not to miss potentially important safety signals, but also to understand the implications and the clinical relevance.
Methodology : We report and discuss the results from five clinical trials (two with a new Shigella vaccine in the early stage of clinical development and three with licensed vaccines) where the absolute neutrophil counts (ANC) were evaluated before and after vaccination. Additionally, we have performed a systematic review of the literature on cases of neutropenia reported during vaccine trials to discuss our results in a more general context.
Principal Findings : Both in our clinical trials and in the literature review, several cases of neutropenia have been reported, in the first two weeks after vaccination. However, neutropenia was generally transient and had a benign clinical outcome, after vaccination with either multiple novel candidates or well-known licensed vaccines. Additionally, the vaccine recipients with neutropenia frequently had lower baseline ANC than non-neutropenic vaccinees. In many instances neutropenia occurred in subjects of African descent, known to have lower ANC compared to western populations.
Conclusions : It is important to include ANC and other haematological tests in early vaccine trials to identify potential safety signals. Post-vaccination neutropenia is not uncommon, generally transient and clinically benign, but many vaccine trials do not have a sampling schedule that allows its detection. Given ethnic variability in the level of circulating neutrophils, normal ranges taking into account ethnicity should be used for determination of trial inclusion/exclusion criteria and classification of neutropenia related adverse events
Thermal Emission and Albedo Spectra of Super Earths with Flat Transmission Spectra
Planets larger than Earth and smaller than Neptune are some of the most
numerous in the galaxy, but observational efforts to understand this population
have proved challenging because optically thick clouds or hazes at high
altitudes obscure molecular features (Kreidberg et al. 2014b). We present
models of super Earths that include thick clouds and hazes and predict their
transmission, thermal emission, and reflected light spectra. Very thick, lofted
clouds of salts or sulfides in high metallicity (1000x solar) atmospheres
create featureless transmission spectra in the near-infrared. Photochemical
hazes with a range of particle sizes also create featureless transmission
spectra at lower metallicities. Cloudy thermal emission spectra have muted
features more like blackbodies, and hazy thermal emission spectra have emission
features caused by an inversion layer at altitudes where the haze forms. Close
analysis of reflected light from warm (~400-800 K) planets can distinguish
cloudy spectra, which have moderate albedos (0.05-0.20), from hazy models,
which are very dark (0.0-0.03). Reflected light spectra of cold planets (~200
K) accessible to a space-based visible light coronagraph will have high albedos
and large molecular features that will allow them to be more easily
characterized than the warmer transiting planets. We suggest a number of
complementary observations to characterize this population of planets,
including transmission spectra of hot (>1000 K) targets, thermal emission
spectra of warm targets using the James Webb Space Telescope (JWST), high
spectral resolution (R~10^5) observations of cloudy targets, and reflected
light spectral observations of directly-imaged cold targets. Despite the dearth
of features observed in super Earth transmission spectra to date, different
observations will provide rich diagnostics of their atmospheres.Comment: 23 pages, 23 figures. Revised for publication in The Astrophysical
Journa
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Black, Brown, and Powerful: Freedom Dreams in Unequal Cities
In April 2018, the Institute on Inequality and Democracy convened scholars, activists, policy advocates, community residents, and nonprofit workers to share and discuss research and action pertaining to processes of inequality in Los Angeles. We sought to shed light on the entangled structures of oppression, including urban displacement, housing precarity, racialized policing, criminal justice debt, forced labor, and the mass supervision and control of youth. Through keynote talks, group dialogue, and workshops, we analyzed how in Los Angeles, and elsewhere, black and brown communities face multiple forms of banishment and exploitation ranging from the criminalization of poverty to institutionalized theft.The question of racial banishment has been an important one for the Institute since its inauguration two years ago. This year though, amidst the troubled times of Trumpism, we wanted to shift our focus from banishment to freedom. In the reports that follow, you will find many examples of what Robin D.G. Kelley, a key presence at the Institute, has famously called “freedom dreams.” Located in, and thinking from South Central Los Angeles, the event’s participants provide insight into organizing frameworks and resistance strategies that challenge exclusion and refuse subordination. From tenant organizing to debtors’ unions, from underground scholars to educational reparations, visions of freedom abound. The Institute on Inequality and Democracy is convinced that university-based research can, and must, support such freedom dreams. Such partnership – between the public university and social justice movements – requires careful attention to the difficult task of decolonizing the university. This mandate is evident throughout this collection of reports. There is no easy alliance between academic power and banished communities; there is no obvious solidarity between urban plans and freedom dreams. This event was intended to be a step towards building such alliances, especially by reconstructing the curriculum and canon of knowledge
Vertical Atmospheric Structure in a Variable Brown Dwarf: Pressure-dependent Phase Shifts in Simultaneous Hubble Space Telescope-Spitzer Light Curves
Heterogeneous clouds or temperature perturbations in rotating brown dwarfs
produce variability in the observed flux. We report time-resolved simultaneous
observations of the variable T6.5 brown dwarf 2MASSJ22282889-431026 over the
wavelength ranges 1.1-1.7 microns and broadband 4.5 microns. Spectroscopic
observations were taken with Wide Field Camera 3 on board the Hubble Space
Telescope and photometry with the Spitzer Space Telescope. The object shows
sinusoidal infrared variability with a period of 1.4 hr at most wavelengths
with peak-to-peak amplitudes between 1.45% and 5.3% of the mean flux. While the
light curve shapes are similar at all wavelengths, their phases differ from
wavelength to wavelength with a maximum difference of more than half of a
rotational period. We compare the spectra with atmospheric models of different
cloud prescriptions, from which we determine the pressure levels probed at
different wavelengths. We find that the phase lag increases with decreasing
pressure level, or higher altitude. We discuss a number of plausible scenarios
that could cause this trend of light curve phase with probed pressure level.
These observations are the first to probe heterogeneity in an ultracool
atmosphere in both horizontal and vertical directions, and thus are an ideal
test case for realistic three dimensional simulations of the atmospheric
structure with clouds in brown dwarfs and extrasolar planets.Comment: Accepted to ApJL, 6 pages, 3 figures. Minor language updates from v1
to match published versio
TRPV4 and KCa functionally couple as osmosensors in the PVN
BACKGROUND AND PURPOSE: Transient receptor potential vanilloid type 4 (TRPV4) and calcium-activated potassium channels (KCa ) mediate osmosensing in many tissues. Both TRPV4 and KCa channels are found in the paraventricular nucleus (PVN) of the hypothalamus, an area critical for sympathetic control of cardiovascular and renal function. Here, we have investigated whether TRPV4 channels functionally couple to KCa channels to mediate osmosensing in PVN parvocellular neurones and have characterized, pharmacologically, the subtype of KCa channel involved. EXPERIMENTAL APPROACH: We investigated osmosensing roles for TRPV4 and KCa channels in parvocellular PVN neurones using cell-attached and whole-cell electrophysiology in mouse brain slices and rat isolated PVN neurons. Intracellular Ca(2+) was recorded using Fura-2AM. The system was modelled in the NEURON simulation environment. KEY RESULTS: Hypotonic saline reduced action current frequency in hypothalamic slices; a response mimicked by TRPV4 channel agonists 4αPDD (1 μM) and GSK1016790A (100 nM), and blocked by inhibitors of either TRPV4 channels (RN1734 (5 μM) and HC067047 (300 nM) or the low-conductance calcium-activated potassium (SK) channel (UCL-1684 30 nM); iberiotoxin and TRAM-34 had no effect. Our model was compatible with coupling between TRPV4 and KCa channels, predicting the presence of positive and negative feedback loops. These predictions were verified using isolated PVN neurons. Both hypotonic challenge and 4αPDD increased intracellular Ca(2+) and UCL-1684 reduced the action of hypotonic challenge. CONCLUSIONS AND IMPLICATIONS: There was functional coupling between TRPV4 and SK channels in parvocellular neurones. This mechanism contributes to osmosensing in the PVN and may provide a novel pharmacological target for the cardiovascular or renal systems
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