193 research outputs found

    Hocus Pocus: Modern-Day Manifestations of Witch Hunts

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    Witch hunts have never been about facts or evidence; rather they are about beliefs often fueled by fear. Witch hunts of the past persecuted the powerless – typically women or those who did not fit into “societal norms.” More recently, the term “witch hunt” has reappeared with great fervor in the political arena, used by the powerful to generate fear that serves a distinct political narrative that those in power are the true victims. Tweets, sound bites, and political speeches rife with accusations of a “witch hunt” reflect a modern usage which has served to delegitimize the historical context of the term. This Article argues that this modern use of the term “witch hunt” is a misappropriation of what has long been used to describe illegitimate hunts of marginalized groups of people, implicating roles of gender, race, and power. This misuse is happening all while subversive, carefully veiled witch hunts are occurring in cleverly disguised legislation and litigation, supported by anecdotes and “spectral” evidence, and aimed at affecting the rights of historically oppressed groups of people based on their gender and race. This Article aims to remind the reader of what a “witch hunt” looked like in colonial New England and to propose that witch hunts are still alive today – not in the political arena, but in the legal one. Law cannot stand on conspiracy theories or perversions of truth shaped to fit a narrative, fueling fear, and resulting in the need to find a scapegoat. For as we’ve seen in the Salem witch trials, without a legal system rooted in reliable evidence and based on verifiable facts, a society can crumble

    Pride and Prejudice and Administrative Zombies: How Economic Woes, Outdated Environmental Regulations, and State Exceptionalism Failed Flint, Michigan

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    It was just over forty years ago, shortly before the Safe Drinking Water Act was passed, that a group of mothers in the small, sleepy town of Woburn, Massachusetts realized there just may have been a connection between their children\u27s leukemia and the town\u27s water supply. They withstood the terrible smell and masked the water\u27s rancid flavor with orange juice. For months they inquired, complained, and assembled in hopes that someone in a position of authority would notice what was so obvious to them. And for months they were dismissed and even ridiculed. Turns out they were right. It took a lawsuit and years of work by the Environmental Protection Agency, epidemiologists, and lawyers to shine a light on the seriousness of the contamination, the consequences, and the need for regulatory oversight. Fast forward to 2014: a group of concerned mothers begin complaining about the taste and smell of the water in Flint, Michigan. Bringing bottles of brown water with them to assemblies in front of the town hall did little to prompt city and state officials to do anything. It took a caring pediatrician and a brave professor to wrangle city, state, and even federal officials into acknowledging the highly toxic levels of lead in the water supply. But this time, more than forty years later, it should have been different. With decades of perspective and what some say are overreaching regulations in place, the environmental disaster in Flint should not have happened. This Article explores how and why the crisis occurred, despite the safeguards created by the Safe Drinking Water Act and the Lead and Copper Rule of 1991, which were meant to prevent this kind of disaster. This Article will then argue why the current action level for lead concentrations in tap water, which requires public water systems to act to protect the public, is unsafe according to current toxicological and epidemiological data. Finally, it will discuss how the current climate of state exceptionalism and lack of federal oversight contributed to the crisis, and suggest regulatory changes to provide a much needed public safety net

    Isolation and purification of mitochondria

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    Isolation and purification of mitochondri

    A comparison between whole transcript and 3' RNA sequencing methods using Kapa and Lexogen library preparation methods.

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    Background3' RNA sequencing provides an alternative to whole transcript analysis. However, we do not know a priori the relative advantage of each method. Thus, a comprehensive comparison between the whole transcript and the 3' method is needed to determine their relative merits. To this end, we used two commercially available library preparation kits, the KAPA Stranded mRNA-Seq kit (traditional method) and the Lexogen QuantSeq 3' mRNA-Seq kit (3' method), to prepare libraries from mouse liver RNA. We then sequenced and analyzed the libraries to determine the advantages and disadvantages of these two approaches.ResultsWe found that the traditional whole transcript method and the 3' RNA-Seq method had similar levels of reproducibility. As expected, the whole transcript method assigned more reads to longer transcripts, while the 3' method assigned roughly equal numbers of reads to transcripts regardless of their lengths. We found that the 3' RNA-Seq method detected more short transcripts than the whole transcript method. With regard to differential expression analysis, we found that the whole transcript method detected more differentially expressed genes, regardless of the level of sequencing depth.ConclusionsThe 3' RNA-Seq method was better able to detect short transcripts, while the whole transcript RNA-Seq was able to detect more differentially expressed genes. Thus, both approaches have relative advantages and should be selected based on the goals of the experiment

    Sound production and mechanism in <i>Heniochus chrysostomus</i> (Chaetodontidae)

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    The diversity in calls and sonic mechanisms appears to be important in Chaetodontidae. Calls in Chaetodon multicinctus seem to include tail slap, jump, pelvic fin flick and dorsal–anal fin erection behaviors. Pulsatile sounds are associated with dorsal elevation of the head, anterior extension of the ventral pectoral girdle and dorsal elevation of the caudal skeleton in Forcipiger flavissiumus. In Hemitaurichthys polylepis, extrinsic swimbladder muscles could be involved in sounds originating from the swimbladder and correspond to the inward buckling of tissues situated dorsally in front of the swimbladder. These examples suggest that this mode of communication could be present in other members of the family. Sounds made by the pennant bannerfish (Heniochus chrysostomus) were recorded for the first time on coral reefs and when fish were hand held. In hand-held fishes, three types of calls were recorded: isolated pulses (51%), trains of four to 11 pulses (19%) and trains preceded by an isolated pulse (29%). Call frequencies were harmonic and had a fundamental frequency between 130 and 180 Hz. The fundamental frequency, sound amplitude and sound duration were not related to fish size. Data from morphology, sound analysis and electromyography recordings highlight that the calls are made by extrinsic sonic drumming muscles in association with the articulated bones of the ribcage. The pennant bannerfish system differs from other Chaetodontidae in terms of sound characteristics, associated body movements and, consequently, mechanism

    Bioresorbable scaffold - A magic bullet for the treatment of coronary artery disease?

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    Today, drug-eluting metal stents are considered the gold standard for interventional treatment of coronary artery disease. While providing inhibition of neointimal hyperplasia, drug-eluting metal stents have many limitations such as the risk of late and very late stent thrombosis, restriction of vascular vasomotion and chronic local inflammatory reaction due to permanent implantation of a 'metallic cage', recognized as a foreign body. Bioresorbable scaffold stents (BRS) are a new solution, which is trying to overcome the limitation of the 'metallic cage'. This structure provides short-term scaffolding of the vessel and then disappears, leaving nothing behind. The purpose of this review is to present the theoretical rationale for the use of BRS and to outline the clinical outcomes associated with their use in terms of data obtained from RCTs, clinical trials, registries and real life use. We have also tried to answer all questions on this intervention based on available data, with a focus on ABSORB BVS (Abbott Vascular, Santa Clara, USA). We consider that this new technology can be the "magic bullet" to treat coronary artery disease

    Granular Packings: Nonlinear elasticity, sound propagation and collective relaxation dynamics

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    Experiments on isotropic compression of a granular assembly of spheres show that the shear and bulk moduli vary with the confining pressure faster than the 1/3 power law predicted by Hertz-Mindlin effective medium theories (EMT) of contact elasticity. Moreover, the ratio between the moduli is found to be larger than the prediction of the elastic theory by a constant value. The understanding of these discrepancies has been a longstanding question in the field of granular matter. Here we perform a test of the applicability of elasticity theory to granular materials. We perform sound propagation experiments, numerical simulations and theoretical studies to understand the elastic response of a deforming granular assembly of soft spheres under isotropic loading. Our results for the behavior of the elastic moduli of the system agree very well with experiments. We show that the elasticity partially describes the experimental and numerical results for a system under compressional loads. However, it drastically fails for systems under shear perturbations, particularly for packings without tangential forces and friction. Our work indicates that a correct treatment should include not only the purely elastic response but also collective relaxation mechanisms related to structural disorder and nonaffine motion of grains.Comment: 21 pages, 13 figure
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