326 research outputs found

    Gun Control: Political Fears Trump Crime Control

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    No matter how draconian, gun control laws are weakly enforced (at least in the United States) and seldom of any significant effect in reducing crime. The kind of citizen who will comply with a gun law is the opposite of the person who will use a gun to facilitate his or her crimes. The problem of weak enforcement is highlighted by a candid interview with the author of the District of Columbia’s 1968 gun registration scheme while the District’s 1975-76 gun ban was under consideration: The problem, [Hechinger] said, is the failure of the mayor and police department to enforce the [current] regulations. “Not only didn’t they enforce them; the[y] didn’t even publicize them,” he said. If the city’s executives were lax on gun laws, its judiciary was hardly better. Of 184 persons prosecuted and convicted for first-time gun possession in the first six months of last year, only 14 received jail sentences. One judge, according to a report to the House District Committee last week, awarded a jail sentence to only one of 73 gun offenders convicted in his court. This led a prominent newspaper commentator to remark that “[i]t might be a good idea to try enforcing the old gun law before rushing to enact new ones.” Even as they were voting for the new gun ban, D.C. politicians were admitting that it was a mere placebo. City Councilman Marion Berry (later to become Mayor) admitted: “Massachusetts has stringent gun control and armed robbery has not decreased but increased. The TV creates far more violence than any gun lobbyist. I, too, am going to vote for this bill [sic] that I want it understood that I realize it’s not adequate . . . .” Councilman Jerry Moore made the same point saying that he had “no illusions about this law—it won’t take guns off the streets.” So the question becomes, “Why enact them?” Is there a hidden political dynamic? But “hidden” means hard to find. So maybe we should look for the answer in a related jurisdiction that keeps more extensive records of its government’s deliberations

    The decontamination of radioactive ion exchange resins using neutral salts as elutriants

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    Includes bibliographical references (leaves 124-126

    Knives and the Second Amendment

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    This Article is the first scholarly analysis of knives and the Second Amendment. Under the Supreme Court’s standard in District of Columbia v. Heller, knives are Second Amendment “arms” because they are “typically possessed by law-abiding citizens for lawful purposes,” including self-defense. There is no knife that is more dangerous than a modern handgun; to the contrary, knives are much less dangerous. Therefore, restrictions on carrying handguns set the upper limit for restrictions on carrying knives. Prohibitions on carrying knives in general, or of particular knives, are unconstitutional. For example, bans of knives that open in a convenient way (e.g., switchblades, gravity knives, and butterfly knives) are unconstitutional. Likewise unconstitutional are bans on folding knives that, after being opened, have a safety lock to prevent inadvertent closure

    Eruptive modes and hiatus of volcanism at West Mata seamount, NE Lau basin : 1996–2012

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    Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geochemistry, Geophysics, Geosystems 15 (2014): 4093–4115, doi:10.1002/2014GC005387.We present multiple lines of evidence for years to decade-long changes in the location and character of volcanic activity at West Mata seamount in the NE Lau basin over a 16 year period, and a hiatus in summit eruptions from early 2011 to at least September 2012. Boninite lava and pyroclasts were observed erupting from its summit in 2009, and hydroacoustic data from a succession of hydrophones moored nearby show near-continuous eruptive activity from January 2009 to early 2011. Successive differencing of seven multibeam bathymetric surveys of the volcano made in the 1996–2012 period reveals a pattern of extended constructional volcanism on the summit and northwest flank punctuated by eruptions along the volcano's WSW rift zone (WSWRZ). Away from the summit, the volumetrically largest eruption during the observational period occurred between May 2010 and November 2011 at ∌2920 m depth near the base of the WSWRZ. The (nearly) equally long ENE rift zone did not experience any volcanic activity during the 1996–2012 period. The cessation of summit volcanism recorded on the moored hydrophone was accompanied or followed by the formation of a small summit crater and a landslide on the eastern flank. Water column sensors, analysis of gas samples in the overlying hydrothermal plume and dives with a remotely operated vehicle in September 2012 confirmed that the summit eruption had ceased. Based on the historical eruption rates calculated using the bathymetric differencing technique, the volcano could be as young as several thousand years.Support for R.W.E. during this study was by internal NOAA funding to the NOAA Vents Program (now Earth-Ocean Interactions Program). The NSF Ridge 2000 and MARGINS programs played a major role in the planning and justification for the 2009 rapid response proposal that funded the May 2009 expedition. MBARI provided support and outstanding postprocessing of the multibeam bathymetry from the D. Allan B. AUV multibeam sonar used in this study. NSF also provided major funding for the 2009 expedition (OCE930025 and OCE-0934660 to JAR) and for the 210Po-210Pb radiometric dating (OCE-0929881 and for the 210Po-210Pb radiometric dating (OCE-0929881 to KHR)). The NOAA Office of Exploration and Research provided major funding for the 2009 and 2012 field programs.2015-04-3

    Co-Crystal Structures of Inhibitors with MRCKÎČ, a Key Regulator of Tumor Cell Invasion

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    MRCKα and MRCKÎČ (myotonic dystrophy kinase-related Cdc42-binding kinases) belong to a subfamily of Rho GTPase activated serine/threonine kinases within the AGC-family that regulate the actomyosin cytoskeleton. Reflecting their roles in myosin light chain (MLC) phosphorylation, MRCKα and MRCKÎČ influence cell shape and motility. We report further evidence for MRCKα and MRCKÎČ contributions to the invasion of cancer cells in 3-dimensional matrix invasion assays. In particular, our results indicate that the combined inhibition of MRCKα and MRCKÎČ together with inhibition of ROCK kinases results in significantly greater effects on reducing cancer cell invasion than blocking either MRCK or ROCK kinases alone. To probe the kinase ligand pocket, we screened 159 kinase inhibitors in an in vitro MRCKÎČ kinase assay and found 11 compounds that inhibited enzyme activity >80% at 3 ”M. Further analysis of three hits, Y-27632, Fasudil and TPCA-1, revealed low micromolar IC50 values for MRCKα and MRCKÎČ. We also describe the crystal structure of MRCKÎČ in complex with inhibitors Fasudil and TPCA-1 bound to the active site of the kinase. These high-resolution structures reveal a highly conserved AGC kinase fold in a typical dimeric arrangement. The kinase domain is in an active conformation with a fully-ordered and correctly positioned αC helix and catalytic residues in a conformation competent for catalysis. Together, these results provide further validation for MRCK involvement in regulation of cancer cell invasion and present a valuable starting point for future structure-based drug discovery efforts

    Agnostic Pathway/Gene Set Analysis of Genome-Wide Association Data Identifies Associations for Pancreatic Cancer

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    Background Genome-wide association studies (GWAS) identify associations of individual single-nucleotide polymorphisms (SNPs) with cancer risk but usually only explain a fraction of the inherited variability. Pathway analysis of genetic variants is a powerful tool to identify networks of susceptibility genes. Methods We conducted a large agnostic pathway-based meta-analysis of GWAS data using the summary-based adaptive rank truncated product method to identify gene sets and pathways associated with pancreatic ductal adenocarcinoma (PDAC) in 9040 cases and 12 496 controls. We performed expression quantitative trait loci (eQTL) analysis and functional annotation of the top SNPs in genes contributing to the top associated pathways and gene sets. All statistical tests were two-sided. Results We identified 14 pathways and gene sets associated with PDAC at a false discovery rate of less than 0.05. After Bonferroni correction (P Conclusion Our agnostic pathway and gene set analysis integrated with functional annotation and eQTL analysis provides insight into genes and pathways that may be biologically relevant for risk of PDAC, including those not previously identified.Peer reviewe
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