81 research outputs found

    High-Sensitivity Electronic Stark Spectrometer Featuring a Laser-Driven Light Source

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    We report developmental details of a high-sensitivity Stark absorption spectrometer featuring a laser-driven light source. The light source exhibits intensity fluctuations of ∼0.3% over timescales ranging from 1 min to 12 h, minimal drift (≤ 0.1%/h), and very little 1/f noise at frequencies greater than 200 Hz, which are comparable to or better than an arc-driven light source. Additional features of the spectrometer include balanced detection with multiplex sampling, which yielded lower noise in A, and constant wavelength or wavenumber (energy) spectral bandpass modes. We achieve noise amplitudes of ∼7 × 10−4 and ∼6 × 10−6 in measurements of single A and ΔA spectra (with 92 data points) taking ∼7 and ∼19 min, respectively

    The Shifting Imaginaries of Corporate Crime

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    This article begins by setting out an analysis of the process of conventionalizing corporate crime that arises from the symbiotic relationship between states and corporations. Noting briefly the empirical characteristics of four broad categories of corporate crime and harm, the article then turns to explore the role of the state in its production and reproduction. We then problematize the role of the state in the reproduction of corporate crime at the level of the global economy, through the “crimes of globalization” and “ecocide,” warning of the tendency in the research literature to oversimplify the role of states and of international organizations. The article finishes by arguing that, as critical academics, it is our role to ensure that corporate crime is never normalized and fully conventionalized in advanced capitalist societies

    Sexual dimorphism in cancer.

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    The incidence of many types of cancer arising in organs with non-reproductive functions is significantly higher in male populations than in female populations, with associated differences in survival. Occupational and/or behavioural factors are well-known underlying determinants. However, cellular and molecular differences between the two sexes are also likely to be important. In this Opinion article, we focus on the complex interplay that sex hormones and sex chromosomes can have in intrinsic control of cancer-initiating cell populations, the tumour microenvironment and systemic determinants of cancer development, such as the immune system and metabolism. A better appreciation of these differences between the two sexes could be of substantial value for cancer prevention as well as treatment

    Entrepreneurs, Firms and Global Wealth Since 1850

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    Computers in the ICU: Why? What? So What? (Editorial)

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    EditorialBiomedical Informatic
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