497 research outputs found
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"We muddle our way through": shared and distributed expertise in digital engagement with research
The use and availability of digital media is changing researchers' roles and simultaneously providing a route for a more engaging relationship with stakeholders throughout the research process. Although the digital realm has a profound influence on people's day-to-day lives, some researchers have not yet professionally embraced digital technologies. This paper arises from one aspect of a project exploring how university research and professional practices are evolving as researchers engage with stakeholders via digital media to create, share and represent knowledge together. Using researchers from the Open University (U.K.) as a case study, this paper reviews the extent to which they are developing multiple identities and functions in their engaged research through digital media
Maritime Insurgency and the Law of the Sea: An Analysis Using the Doctrine of Distress
This Comment examines the international legal implications of an insurgent warship operating on the high seas. The author specifically addresses the rights of insurgents to conduct maritime operations and the right of third States to deny use of the high seas to these insurgents. The author argues that these claims may be provided an adequate forum under the doctrine of distress, or force majeure. The author examines potential arguments that an insurgent warship is a private vessel, and is stateless, but concludes that an insurgent is neither. The author further concludes that an insurgent warship is not generally subject to lawful interference on the high seas by third States
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Shear-Wave Splitting and Mantle Flow Beneath the Colorado Plateau and its Boundary with the Great Basin
Shear-wave splitting measurements from SKS and SKKS phases show fast polarization azimuths that are subparallel to North American absolute plate motion within the central Rio Grande Rift (RGR) and Colorado Plateau (CP) through to the western rim of the CP, with anisotropy beneath the CP and central RGR showing a remarkably consistent pattern with a mean fast azimuth of 4 degrees +/- degrees 6 E of N. Approaching the rim from the southeast, fast anisotropic directions become north-northeast-south-southwest (NNE-SSW), rotate counter clockwise to north-south in the CP-GB transition, and then to NNW-SSE in the western Great Basin ( GB). This change is coincident with uppermost mantle S-wave velocity perturbations that vary from +4% beneath the western CP and the eastern edge of the Marysvale volcanic field to about -8% beneath the GB. Corresponding delay times average 1.5 sec beneath the central CP, decrease to approximately 0.8 sec near the CP-GB transition, and increase to about 1.2 sec beneath the GB. For the central CP, we suggest anisotropy predominantly controlled by North American plate motion above the asthenosphere. The observed pattern of westward-rotating anisotropy from the western CP through the CP-GB transition may be influenced to asthenospheric flow around a CP lithospheric keel and/or by vertical flow arising from edge-driven small-scale convection. The anisotropic transition from the CP to the GB thus marks a first-order change from absolute plate motion dominated lithosphere-asthenosphere shear to a new regime controlled by regional flow processes. The NNW-SSE anisotropic fast directions of split SKS waves in the eastern GB area are part of a broad circular pattern of seismic anisotropic fast direction in the central GB that has recently been hypothesized to be due to toroidal flow around the sinking Juan de Fuca-Gorda slab.National Science Foundation EAR 9706094, 9707188, 9707190, 0207812Los Alamos National Laboratory Institute of Geophysics and Planetary PhysicsNational Science Foundation Cooperative EAR-000430Department of Energy National Nuclear Security AdministrationGeological Science
Itinéraire de deux traducteurs en SARL
Jérôme Richard et Pierre Le Grand sont associés depuis 2006 dans la SARL eXceLingua. Nous les avons interrogés sur leur pratique de la traduction en équipe et les modalités de leur collaboration. Réponses croisées. Présentez-nous votre société en quelques mots. Jérôme Richard : eXceLingua propose des services linguistiques dans les couples de langues anglais-français et allemand-français. Notre société se compose de deux traducteurs expérimentés qui ont décidé d’unir leurs compétences. Nous a..
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An Open Research University
This is the final report of the Open University’s RCUK-funded Public Engagement with Research Catalyst, ‘An open research university’, a project designed to create the conditions in which engaged research can flourish. The report describes an evidence-based strategy designed to embed engaged research within the University’s strategic planning for research and the operational practices of researchers. This programme of organisational change was informed by action research, working collaboratively with researchers at all levels across the institution to identify and implement strategies that work for them and the stakeholders, user communities and members of the public that engage with their research. Through a combination of surveys, interviews and interventions, we identified a number of challenges and proposed solutions to address them. For example, we found that researchers have a relatively narrow view of engaged research and the communities with which they interact and very few researchers strategically evaluate their engaged research activities. The report documents some of the interventions we have introduced with the aim of broadening and deepening future researcher engagement, including a definition of engaged research and revised promotion criteria that include knowledge exchange profiles. In conclusion, we argue that there is still a battle to be won for open and engaged research. For a culture of engaged research to be sustainable in the medium to long-term requires ongoing recognition and acceptance of its progressive value(s) by researchers, universities, funders and ultimately, policy-makers
New approaches to the restoration of shallow marginal peatlands
ArticleGlobally, the historic and recent exploitation of peatlands through management practices such as agricultural reclamation, peat harvesting or forestry, have caused extensive damage to these ecosystems. Their value is now increasingly recognised, and restoration and rehabilitation programmes are underway to improve some of the ecosystem services provided by peatlands: blocking drainage ditches in deep peat has been shown to improve the storage of water, decrease carbon losses in the long-term, and improve biodiversity. However, whilst the restoration process has benefitted from experience and technical advice gained from restoration of deep peatlands, shallow peatlands have received less attention in the literature, despite being extensive in both uplands and lowlands. Using the experience gained from the restoration of the shallow peatlands of Exmoor National Park (UK), and two test catchments in particular, this paper provides technical guidance which can be applied to the restoration of other shallow peatlands worldwide. Experience showed that integrating knowledge of the historical environment at the planning stage of restoration was essential, as it enabled the effective mitigation of any threat to archaeological features and sites. The use of bales, commonly employed in other upland ecosystems, was found to be problematic. Instead, ‘leaky dams’ or wood and peat combination dams were used, which are both more efficient at reducing and diverting the flow, and longer lasting than bale dams. Finally, an average restoration cost (£306 ha-1) for Exmoor, below the median national value across the whole of the UK, demonstrates the cost-effectiveness of these techniques. However, local differences in peat depth and ditch characteristics (i.e. length, depth and width) between sites affect both the feasibility and the cost of restoration. Overall, the restoration of shallow peatlands is shown to be technically viable; this paper provides a template for such process over analogous landscapes.South West WaterUniversity of ExeterTechnology Strategy BoardNERCKnowledge Transfer Partnership programm
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Engaged Career Development in the context of the Research (Engagement and) Impact Agenda
Though the research impact agenda has the potential to drive equitable and impactful public engagement practice, systematic approaches to career development are crucial to achieve this vision.
Come explore key vocabulary, map the engaged career development learning landscape, and chart the increasing importance of engagement and impact within national and institutional strategy. Equip yourself to articulate the value of career development as a pathway to impact to funders and senior leaders. Hear how sector initiatives are implemented at an institutional level and what challenges remain to equip staff with the skills and experience to lead impactful engagement
Localization of Double-Strand Break Repair Proteins to Viral Replication Compartments following Lytic Reactivation of Kaposi's Sarcoma-Associated Herpesvirus
ABSTRACT
Double-strand breaks (DSBs) in DNA are recognized by the Ku70/80 heterodimer and the MRE11-RAD50-NBS1 (MRN) complex and result in activation of the DNA-PK and ATM kinases, which play key roles in regulating the cellular DNA damage response (DDR). DNA tumor viruses such as Kaposi's sarcoma-associated herpesvirus (KSHV) are known to interact extensively with the DDR during the course of their replicative cycles. Here we show that during lytic amplification of KSHV DNA, the Ku70/80 heterodimer and the MRN complex consistently colocalize with viral genomes in replication compartments (RCs), whereas other DSB repair proteins form foci outside RCs. Depletion of MRE11 and abrogation of its exonuclease activity negatively impact viral replication, while in contrast, knockdown of Ku80 and inhibition of the DNA-PK enzyme, which are involved in nonhomologous end joining (NHEJ) repair, enhance amplification of viral DNA. Although the recruitment of DSB-sensing proteins to KSHV RCs is a consistent occurrence across multiple cell types, activation of the ATM-CHK2 pathway during viral replication is a cell line-specific event, indicating that recognition of viral DNA by the DDR does not necessarily result in activation of downstream signaling pathways. We have also observed that newly replicated viral DNA is not associated with cellular histones. Since the presence and modification of these DNA-packaging proteins provide a scaffold for docking of multiple DNA repair factors, the absence of histone deposition may allow the virus to evade localization of DSB repair proteins that would otherwise have a detrimental effect on viral replication.
IMPORTANCE
Tumor viruses are known to interact with machinery responsible for detection and repair of double-strand breaks (DSBs) in DNA, although detail concerning how Kaposi's sarcoma-associated herpesvirus (KSHV) modulates these cellular pathways during its lytic replication phase was previously lacking. By undertaking a comprehensive assessment of the localization of DSB repair proteins during KSHV replication, we have determined that a DNA damage response (DDR) is directed to viral genomes but is distinct from the response to cellular DNA damage. We also demonstrate that although recruitment of the MRE11-RAD50-NBS1 (MRN) DSB-sensing complex to viral genomes and activation of the ATM kinase can promote KSHV replication, proteins involved in nonhomologous end joining (NHEJ) repair restrict amplification of viral DNA. Overall, this study extends our understanding of the virus-host interactions that occur during lytic replication of KSHV and provides a deeper insight into how the DDR is manipulated during viral infection.
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Default in plasma and intestinal IgA responses during acute infection by Simian Immunodeficiency Virus.
International audienceABSTRACT: BACKGROUND: Conflicting results regarding changes in mucosal IgA production or in the proportions of IgA plasma cells in the small and large intestines during HIV-infection have been previously reported. Except in individuals repeatedly exposed to HIV-1 but yet remaining uninfected, HIV-specific IgA are frequently absent in mucosal secretions from HIV-infected patients. However, little is known about the organization and functionality of mucosal B-cell follicles in acute HIV/SIV infection during which a T-dependent IgA response should have been initiated. In the present study, we evaluated changes in B-cell and T-cell subsets as well as the extent of apoptosis and class-specific plasma cells in Peyer's Patches, isolated lymphoid follicles, and lamina propria. Plasma levels of IgA, BAFF and APRIL were also determined. RESULTS: Plasma IgA level was reduced by 46 percent by 28 dpi and no IgA plasma cells were found within germinal centers of Peyer's Patches and isolated lymphoid follicles. This lack of a T-dependent IgA response occurs although germinal centers remained functional with no sign of follicular damage, but a prolonged survival of follicular CD4+ T-cells and normal generation of IgG plasma cells is observed. Whereas the average plasma BAFF level was increased by 4.5-fold and total plasma cells were 1.7 to 1.9-fold more numerous in the lamina propria, the relative proportion of IgA plasma cells in this effector site was reduced by 19 percent (duodemun) to 35 percent (Ileum) at 28 dpi. CONCLUSION: Our data provide evidence that SIV is unable to initiate a T-dependent IgA response during the acute phase of infection and favors the production of IgG (ileum) or IgM (duodenum) plasma cells at the expense of IgA plasma cells. Therefore, an early and generalized default in IgA production takes place during the acute of phase of HIV/SIV infection, which might impair not only a virus-specific antibody response but also IgA responses to other pathogens and vaccines as well. Understanding the mechanisms that impair IgA production during acute HIV/SIV infection is crucial to improve virus-specific response in mucosa and control microbial translocation
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