Most of the cases are very similar. : Documenting and corroborating conflict-related sexual violence affecting Rohingya refugees

BACKGROUND: In August 2017, a large population of Rohingya from northern Rakhine state in Myanmar fled to Bangladesh due to clearance operations by the Myanmar security forces characterized by widespread and systematic violence, including extensive conflict-related sexual violence (CRSV). This study sought to document the patterns of injuries and conditions experienced by the Rohingya, with a specific focus on sexual violence. METHODS: Qualitative interviews were conducted with 26 health care professionals who cared for Rohingya refugees after their arrival in Bangladesh between November 2019 and August 2020. RESULTS: Health care workers universally reported hearing accounts and seeing evidence of sexual and gender-based violence committed against Rohingya people of all genders by the Myanmar military and security forces. They observed physical and psychological consequences of such acts against the Rohingya while patients were seeking care. Health care workers shared that patients faced pressure not to disclose their experiences of CRSV, likely resulted in an underreporting of the prevalence of sexual violence. Forced witnessing of sexual violence and observed increases in pregnancy and birth rates as a result of rape are two less-reported issues that emerged from these data. CONCLUSIONS: Healthcare workers corroborated previous reports that the Rohingya experienced CRSV at the hands of the Myanmar military and security forces. Survivors often revealed their experiences of sexual violence while seeking care for a variety of physical and psychological conditions. Stigma, cultural pressure, and trauma created barriers to disclosing experiences of sexual violence and likely resulted in an underreporting of the prevalence of sexual violence. The findings of this research emphasize the importance of offering universal and comprehensive trauma-informed services to all refugees with the presumption of high rates of trauma in this population and many survivors who may never identify themselves as such

Magnetoelastic sensors in combination with nanometer-scale honeycombed thin film ceramic TiO2 for remote query measurement of humidity

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The Science of Sungrazers, Sunskirters, and Other Near-Sun Comets

This review addresses our current understanding of comets that venture close to the Sun, and are hence exposed to much more extreme conditions than comets that are typically studied from Earth. The extreme solar heating and plasma environments that these objects encounter change many aspects of their behaviour, thus yielding valuable information on both the comets themselves that complements other data we have on primitive solar system bodies, as well as on the near-solar environment which they traverse. We propose clear definitions for these comets: We use the term near-Sun comets to encompass all objects that pass sunward of the perihelion distance of planet Mercury (0.307 AU). Sunskirters are defined as objects that pass within 33 solar radii of the Sun’s centre, equal to half of Mercury’s perihelion distance, and the commonly-used phrase sungrazers to be objects that reach perihelion within 3.45 solar radii, i.e. the fluid Roche limit. Finally, comets with orbits that intersect the solar photosphere are termed sundivers. We summarize past studies of these objects, as well as the instruments and facilities used to study them, including space-based platforms that have led to a recent revolution in the quantity and quality of relevant observations. Relevant comet populations are described, including the Kreutz, Marsden, Kracht, and Meyer groups, near-Sun asteroids, and a brief discussion of their origins. The importance of light curves and the clues they provide on cometary composition are emphasized, together with what information has been gleaned about nucleus parameters, including the sizes and masses of objects and their families, and their tensile strengths. The physical processes occurring at these objects are considered in some detail, including the disruption of nuclei, sublimation, and ionisation, and we consider the mass, momentum, and energy loss of comets in the corona and those that venture to lower altitudes. The different components of comae and tails are described, including dust, neutral and ionised gases, their chemical reactions, and their contributions to the near-Sun environment. Comet-solar wind interactions are discussed, including the use of comets as probes of solar wind and coronal conditions in their vicinities. We address the relevance of work on comets near the Sun to similar objects orbiting other stars, and conclude with a discussion of future directions for the field and the planned ground- and space-based facilities that will allow us to address those science topics

Constraints on the χ_(c1) versus χ_(c2) polarizations in proton-proton collisions at √s = 8 TeV

The polarizations of promptly produced χ_(c1) and χ_(c2) mesons are studied using data collected by the CMS experiment at the LHC, in proton-proton collisions at √s=8  TeV. The χ_c states are reconstructed via their radiative decays χ_c → J/ψγ, with the photons being measured through conversions to e⁺e⁻, which allows the two states to be well resolved. The polarizations are measured in the helicity frame, through the analysis of the χ_(c2) to χ_(c1) yield ratio as a function of the polar or azimuthal angle of the positive muon emitted in the J/ψ → μ⁺μ⁻ decay, in three bins of J/ψ transverse momentum. While no differences are seen between the two states in terms of azimuthal decay angle distributions, they are observed to have significantly different polar anisotropies. The measurement favors a scenario where at least one of the two states is strongly polarized along the helicity quantization axis, in agreement with nonrelativistic quantum chromodynamics predictions. This is the first measurement of significantly polarized quarkonia produced at high transverse momentum