224 research outputs found

    Proposition 11 - What Will It Do?

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    From Codes to Patterns: Designing Interactive Decoration for Tableware

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    ABSTRACT We explore the idea of making aesthetic decorative patterns that contain multiple visual codes. We chart an iterative collaboration with ceramic designers and a restaurant to refine a recognition technology to work reliably on ceramics, produce a pattern book of designs, and prototype sets of tableware and a mobile app to enhance a dining experience. We document how the designers learned to work with and creatively exploit the technology, enriching their patterns with embellishments and backgrounds and developing strategies for embedding codes into complex designs. We discuss the potential and challenges of interacting with such patterns. We argue for a transition from designing ‘codes to patterns’ that reflects the skills of designers alongside the development of new technologies

    Nuclease-based gene drives, an innovative tool for insect vector control: advantages and challenges of the technology

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    Genetic control of insects involves the release of modified insects that contain altered genetic traits and are competent to mate with target populations to introduce the traits therein. Since it relies on mating, this type of control is species-specific, non-toxic, and has the advantage that the released insects can do the difficult task of reaching remote and otherwise inaccessible insect niches. Gene drives are capable of drastically biasing their own transmission and are being developed as a new type of genetic control, one that would be self-sustaining, requiring low numbers in the initial release in order to spread and persist within a population. In this review, the advantages and challenges of building and deploying this technology will be discussed, using mosquito control as an example

    Immune Reactivity and Pseudoprogression or Tumor Flare in a Serially Biopsied Neuroendocrine Patient Treated with the Epigenetic Agent RRx-001.

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    Neuroendocrine tumors (NETs) are grouped together as a single class on the basis of histologic appearance, immunoreactivity for the neuroendocrine markers chromogranin A and synaptophysin, and potential secretion of hormones, neurotransmitters, neuromodulators and neuropeptides. Nevertheless, despite these common characteristics, NETs differ widely in terms of their natural histories: high-grade NETs are clinically aggressive and, like small cell lung cancer, which they most closely resemble, tend to respond to cisplatin and etoposide. In contrast, low-grade NETs, which as a rule progress and behave indolently, do not. In either case, the treatment strategy, apart from potentially curative surgical resection, is very poorly defined. This report describes the case of a 28-year-old white male with a diagnosis of high-grade NET of undetermined primary site metastatic to the lymph nodes, skin and paraspinal soft tissues, treated with the experimental anticancer agent RRx-001, in the context of a phase II clinical trial called TRIPLE THREAT (NCT02489903); serial sampling of tumor material through repeat biopsies demonstrated an intratumoral inflammatory response, including the amplification of infiltrating T cells, which correlated with clinical and symptomatic benefit. This case suggests that pseudoprogression or RRx-001-induced enlargement of tumor lesions, which has been previously described for several RRx-001-treated patients, is the result of tumoral lymphocyte infiltration

    CRISPR-mediated knock-in of transgenes into the malaria vector Anopheles funestus

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    The ability to introduce mutations, or transgenes, of choice to precise genomic locations has revolutionized our ability to understand howgenes and organisms work. In many mosquito species that are vectors of various human diseases, the advent of CRISPR genome editingtools has shed light on basic aspects of their biology that are relevant to their efficiency as disease vectors. This allows a better understand-ing of how current control tools work and opens up the possibility of novel genetic control approaches, such as gene drives, that deliber-ately introduce genetic traits into populations. Yet for theAnophelesfunestusmosquito, a significant vector of malaria in sub-SaharanAfrica and indeed the dominant vector species in many countries, transgenesis has yet to be achieved. We describe herein an optimizedtransformation system based on the germline delivery of CRISPR components that allows efficient cleavage of a previously validated geno-mic site and preferential repair of these cut sites via homology-directed repair (HDR), which allows the introduction of exogenous templatesequence, rather than end-joining repair. The rates of transformation achieved are sufficiently high that it should be able to introducealleles of choice to a target locus, and recover these, without the need to include additional dominant marker genes. Moreover, the highrates of HDR observed suggest that gene drives, which employ an HDR-type mechanism to ensure their proliferation in the genome, maybe well suited to work inA.funestus

    NRSF and BDNF polymorphisms as biomarkers of cognitive dysfunction in adults with newly-diagnosed epilepsy

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    Cognitive dysfunction is a common comorbidity in people with epilepsy, but its causes remain unclear. It may be related to the etiology of the disorder, the consequences of seizures, or the effects of antiepileptic drug treatment. Genetics may also play a contributory role. We investigated the influence of variants in the genes encoding neuron-restrictive silencer factor (NRSF) and brain-derived neurotrophic factor (BDNF), proteins previously associated with cognition and epilepsy, on cognitive function in people with newly diagnosed epilepsy. A total of 82 patients who had previously undergone detailed neuropsychological assessment were genotyped for single nucleotide polymorphisms (SNPs) across the NRSF and BDNF genes. Putatively functional SNPs were included in a genetic association analysis with specific cognitive domains, including memory, psychomotor speed, and information processing. Cross-sectional and longitudinal designs were used to explore genetic influences on baseline cognition at diagnosis and change from baseline over the first year since diagnosis, respectively. We found a statistically significant association between genotypic variation and memory function at both baseline (NRSF: rs1105434, rs2227902 and BDNF: rs1491850, rs2030324, rs11030094) and in our longitudinal analysis (NRSF: rs2227902 and BDNF: rs12273363). Psychomotor speed was also associated with genotype (NRSF rs3796529) in the longitudinal assessment. In line with our previous work on general cognitive function in the healthy aging population, we observed an additive interaction between risk alleles for the NRSF rs2227902 (G) and BDNF rs6265 (A) polymorphisms which was again consistent with a significantly greater decline in delayed recall over the first year since diagnosis. These findings support a role for the NRSF–BDNF pathway in the modulation of cognitive function in patients with newly diagnosed epilepsy

    Interrogating technology-led experiments in sustainability governance

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    Solutions to global sustainability challenges are increasingly technology‐intensive. Yet, technologies are neither developed nor applied to governance problems in a socio‐political vacuum. Despite aspirations to provide novel solutions to current sustainability governance challenges, many technology‐centred projects, pilots and plans remain implicated in longer‐standing global governance trends shaping the possibilities for success in often under‐recognized ways. This article identifies three overlapping contexts within which technology‐led efforts to address sustainability challenges are evolving, highlighting the growing roles of: (1) private actors; (2) experimentalism; and (3) informality. The confluence of these interconnected trends illuminates an important yet often under‐recognized paradox: that the use of technology in multi‐stakeholder initiatives tends to reduce rather than expand the set of actors, enhancing instead of reducing challenges to participation and transparency, and reinforcing rather than transforming existing forms of power relations. Without recognizing and attempting to address these limits, technology‐led multi‐stakeholder initiatives will remain less effective in addressing the complexity and uncertainty surrounding global sustainability governance. We provide pathways for interrogating the ways that novel technologies are being harnessed to address long‐standing global sustainability issues in manners that foreground key ethical, social and political considerations and the contexts in which they are evolving
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