24 research outputs found

    Accountability, Immunity, & Impunity: How the UN Avoids Justice in Haiti

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    Following the devastating 2010 earthquake, the world’s largest cholera epidemic broke out on the island of Haiti, taking the lives of an estimated 8,500 and continuing to afflict more than 685,000. Scientific analysis undeniably traced the cholera strain to the improper disposal of waste and negligent screening standards of United Nations (UN) Nepalese Peacekeeping troops, garnering calls for the UN to take responsibility and provide reparations for the outbreak. Despite legal attempts on behalf of the victims, the Peacekeeping troops and the UN as a whole have escaped accountability for their crimes. This paper comprehensively evaluates the accountability literature to demonstrate that the interpretation of the UN’s immunity clause directly contradicts the humanitarian norms and international laws the UN was created to uphold, creating a disparity between the intentions of the institution and the actions that result. I argue that the immunity clause has shaped an institutional culture of impunity, one in which the lack of legal recourse for victims allows the UN to shirk basic responsibilities and abuse host populations. This in turn has set a precedent of immunity for today’s international sphere, wherein most IGOs (intergovernmental organizations) and NGOs (non-governmental organizations) have modeled their own immunity clauses after the UN’s, leading to a global culture of legal immunity. This paper ultimately demands the reform of the immunity clause before discussing potential accountability mechanisms, including the enforcement of SOFAs (Status of Forces Agreements) and the trial of the UN in national courts, in order to reconcile peacekeeping actions with international law and attain justice for the Haitian people

    TOI-4201: An Early M-dwarf Hosting a Massive Transiting Jupiter Stretching Theories of Core-Accretion

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    We confirm TOI-4201 b as a transiting Jovian mass planet orbiting an early M dwarf discovered by the Transiting Exoplanet Survey Satellite. Using ground based photometry and precise radial velocities from NEID and the Planet Finder Spectrograph, we measure a planet mass of 2.590.06+0.07^{+0.07}_{-0.06} MJ_{J}, making this one of the most massive planets transiting an M-dwarf. The planet is \sim0.4\% the mass of its 0.63 M_{\odot} host and may have a heavy element mass comparable to the total dust mass contained in a typical Class II disk. TOI-4201 b stretches our understanding of core-accretion during the protoplanetary phase, and the disk mass budget, necessitating giant planet formation to either take place much earlier in the disk lifetime, or perhaps through alternative mechanisms like gravitational instability.Comment: To be submitted to AAS journals on 14th July 202

    NYESO-1/LAGE-1s and PRAME Are Targets for Antigen Specific T Cells in Chondrosarcoma following Treatment with 5-Aza-2-Deoxycitabine

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    Chondrosarcoma has no proven systemic option in the metastatic setting. The development of a non-cross-resistant strategy, such as cellular immunotherapy using antigen-specific T cells would be highly desirable. NY-ESO-1 and PRAME are members of the Cancer Testis Antigen (CTA) family that have been identified as promising targets for T cell therapy. LAGE-1 is a cancer testis antigen 90% homologous to NY-ESO-1, sharing the 157-165 A*0201 NY-ESO-1 epitope with its transcript variant, LAGE-1s. A number of CTA's have been induced using 5-Aza-2-Deoxycitabine (5-Aza-dC) in other cancers. We sought to evaluate the feasibility of targeting chondrosarcoma tumors using NY-ESO-1/LAGE-1s and PRAME specific T cells using 5-Aza-dC to induce antigen expression.We used 11 flash frozen tumors from the University of Washington tumor bank to test for the expression of NY-ESO-1, PRAME, LAGE-1s and LAGE-1L in chondrosarcoma tumors. Using four chondrosarcoma cell lines we tested the expression of these CTA's with and without 5-Aza-dC treatments. Finally, using NY-ESO-1/LAGE-1s and PRAME specific effectors that we generated from sarcoma patients, we evaluated the ability of these T cells to lyse A*0201 expressing chondrosarcoma cell lines in vitro both with and without 5-Aza-dC treatment.A minority (36%) of chondrosarcoma tumors expressed either NY-ESO-1 or LAGE-1s at >10% of our reference value and none expressed PRAME at that level. However, in all four of the chondrosarcoma cell lines tested, NY-ESO-1 and PRAME expression could be induced following treatment with 5-Aza-dC including in cell lines where expression was absent or barely detectable. Furthermore, NY-ESO-1/LAGE-1s and PRAME specific CD8+ effector T cells were able to specifically recognize and lyse A*0201 expressing chondrosarcoma cell lines following 5-Aza-dC treatment.These data suggest that adoptive immunotherapy in combination with 5-Aza-dC may be a potential strategy to treat unresectable or metastatic chondrosarcoma patients where no proven systemic therapies exist

    Profiling Critical Cancer Gene Mutations in Clinical Tumor Samples

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    BACKGROUND: Detection of critical cancer gene mutations in clinical tumor specimens may predict patient outcomes and inform treatment options; however, high-throughput mutation profiling remains underdeveloped as a diagnostic approach. We report the implementation of a genotyping and validation algorithm that enables robust tumor mutation profiling in the clinical setting. METHODOLOGY: We developed and implemented an optimized mutation profiling platform ("OncoMap") to interrogate approximately 400 mutations in 33 known oncogenes and tumor suppressors, many of which are known to predict response or resistance to targeted therapies. The performance of OncoMap was analyzed using DNA derived from both frozen and FFPE clinical material in a diverse set of cancer types. A subsequent in-depth analysis was conducted on histologically and clinically annotated pediatric gliomas. The sensitivity and specificity of OncoMap were 93.8% and 100% in fresh frozen tissue; and 89.3% and 99.4% in FFPE-derived DNA. We detected known mutations at the expected frequencies in common cancers, as well as novel mutations in adult and pediatric cancers that are likely to predict heightened response or resistance to existing or developmental cancer therapies. OncoMap profiles also support a new molecular stratification of pediatric low-grade gliomas based on BRAF mutations that may have immediate clinical impact. CONCLUSIONS: Our results demonstrate the clinical feasibility of high-throughput mutation profiling to query a large panel of "actionable" cancer gene mutations. In the future, this type of approach may be incorporated into both cancer epidemiologic studies and clinical decision making to specify the use of many targeted anticancer agents

    The NANOGrav Nine-year Data Set:Mass and Geometric Measurements of Binary Millisecond Pulsars

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    We analyze 24 binary radio pulsars in the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) nine-year data set. We make 14 significant measurements of the Shapiro delay, including new detections in four pulsar-binary systems (PSRs J0613−0200, J2017+0603, J2302+4442, and J2317+1439), and derive estimates of the binary-component masses and orbital inclination for these MSP-binary systems. We find a wide range of binary pulsar masses, with values as low as mp=1.180.09+0.10M{m}_{{\rm{p}}}={1.18}_{-0.09}^{+0.10}\,{M}_{\odot } for PSR J1918−0642 and as high as mp=1.9280.017+0.017M{m}_{{\rm{p}}}={1.928}_{-0.017}^{+0.017}\,{M}_{\odot } for PSR J1614−2230 (both 68.3% credibility). We make an improved measurement of the Shapiro timing delay in the PSR J1918−0642 and J2043+1711 systems, measuring the pulsar mass in the latter system to be mp=1.410.18+0.21M{m}_{{\rm{p}}}={1.41}_{-0.18}^{+0.21}\,{M}_{\odot } (68.3% credibility) for the first time. We measure secular variations of one or more orbital elements in many systems, and use these measurements to further constrain our estimates of the pulsar and companion masses whenever possible. In particular, we used the observed Shapiro delay and periastron advance due to relativistic gravity in the PSR J1903+0327 system to derive a pulsar mass of mp=1.650.02+0.02M{m}_{{\rm{p}}}={1.65}_{-0.02}^{+0.02}\,{M}_{\odot } (68.3% credibility). We discuss the implications that our mass measurements have on the overall neutron-star mass distribution, and on the "mass/orbital-period" correlation due to extended mass transfer

    The James Webb Space Telescope Mission

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    Twenty-six years ago a small committee report, building on earlier studies, expounded a compelling and poetic vision for the future of astronomy, calling for an infrared-optimized space telescope with an aperture of at least 4m4m. With the support of their governments in the US, Europe, and Canada, 20,000 people realized that vision as the 6.5m6.5m James Webb Space Telescope. A generation of astronomers will celebrate their accomplishments for the life of the mission, potentially as long as 20 years, and beyond. This report and the scientific discoveries that follow are extended thank-you notes to the 20,000 team members. The telescope is working perfectly, with much better image quality than expected. In this and accompanying papers, we give a brief history, describe the observatory, outline its objectives and current observing program, and discuss the inventions and people who made it possible. We cite detailed reports on the design and the measured performance on orbit.Comment: Accepted by PASP for the special issue on The James Webb Space Telescope Overview, 29 pages, 4 figure

    PLACE: Engagement beyond the Classroom

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    What insights can different disciplines and modes of inquiry offer about the legacies of war? How might integration of these insights help us learn more about the impact of war, broadly conceived? And what lessons might be drawn for the future? This presentation discussing the experience of being both a PLACE Student Fellow and a PLACE student participant is part of Legacies of War and the Liberal Arts: Learning from Difference, a series of short, student-led talks that bring a variety of disciplinary perspectives — sciences, arts, humanities, and social sciences — to bear on arguably the most consequential experiences of human history. Patrick Cottrell, Associate Professor of Political Science at Linfield College, introduces the series of talks at the beginning of the presentation

    A British Parliamentary Debate Demonstration by the Linfield College Forensics Team

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    College and university students throughout the world engage in British Parliamentary (BP) debate, an academic format with origins in British parliamentary procedure. Each debate involves four two-person teams. Two teams (“proposition” or “government”) support the resolution (the topic) and two teams (“opposition”) oppose. BP debate is about using good speaking skills to present logical arguments, and teams are encouraged to incorporate philosophical arguments into the debate. The first six speeches in the debate (known as a \u22round\u22) feature a mix of constructive arguments (new arguments for one’s side) and rebuttal arguments (refutation of the arguments presented by one’s opponents). A BP debate round concludes with two “whip” speeches, where each side summarizes the significant arguments presented throughout the round and presents reasons why their team should win the debate. This demonstration debate will feature a current events topic, which is common in British Parliamentary debate intercollegiate competition

    Structure and functions of exopolysaccharide produced by gut commensal Lactobacillus reuteri 100-23

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    Lactobacillus reuteri strain 100-23 together with a Lactobacillus-free mouse model, provides a system with which the molecular traits underpinning bacterial commensalism in vertebrates can be studied. A polysaccharide was extracted from sucrose-containing liquid cultures of strain 100-23. Chemical analysis showed that this exopolysaccharide was a levan (β-2, 6-linked fructan). Mutation of the fructosyl transferase (ftf) gene resulted in loss of exopolysaccharide production. The ftf mutant was able to colonise the murine gastrointestinal tract in the absence of competition, but colonisation was impaired in competition with the wild type. Biofilm formation by the mutant on the forestomach epithelial surface was not impaired and the matrix between cells was indistinguishable from that of the wild type in electron micrographs. Colonisation of the mouse gut by the wild-type strain led to increased proportions of regulatory T cells (Foxp3+) in the spleen, whereas colonisation by the ftf mutant did not. Survival of the mutant in sucrose-containing medium was markedly reduced relative to the wild type. Comparison of the genomic ftf loci of strain 100-23 with other L. reuteri strains suggested that the ftf gene was acquired by lateral gene transfer early in the evolution of the species and subsequently diversified at accelerated rates. Levan production by L. reuteri 100-23 may represent a function acquired by the bacterial species for life in moderate to high-sucrose extra-gastrointestinal environments that has subsequently been diverted to novel uses, including immunomodulation, that aid in colonisation of the murine gut
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