709 research outputs found

    The Differential Effects of Oil Demand and Supply Shocks on the Global Economy

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    We employ a set of sign restrictions on the generalized impulse responses of a Global VAR model, estimated for 38 countries/regions over the period 1979Q2.2011Q2, to discriminate between supply-driven and demand-driven oil-price shocks and to study the time profile of their macroeconomic effects for different countries. The results indicate that the economic consequences of a supply-driven oil-price shock are very different from those of an oil-demand shock driven by global economic activity, and vary for oil-importing countries compared to energy exporters. While oil importers typically face a long-lived fall in economic activity in response to a supply-driven surge in oil prices, the impact is positive for energy-exporting countries that possess large proven oil/gas reserves. However, in response to an oil-demand disturbance, almost all countries in our sample experience long-run inflationary pressures and a short-run increase in real output.oil-demand and oil-supply shocks

    The Global Impact of the Systemic Economies and MENA Business Cycles

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    This paper analyses spillovers from macroeconomic shocks in systemic economies (China, the Euro Area, and the United States) to the Middle East and North Africa (MENA) region as well as outward spillovers from a GDP shock in the Gulf Cooperation Council (GCC) countries and MENA oil exporters to the rest of the world. This analysis is based on a Global Vector Autoregression (GVAR) model, estimated for 38 countries/regions over the period 1979Q2 to 2011Q2. Spillovers are transmitted across economies via trade, financial, and commodity price linkages. The results show that the MENA countries are more sensitive to developments in China than to shocks in the Euro Area or the United States, in line with the direction of evolving trade patterns and the emergence of China as a key driver of the global economy. Outward spillovers from the GCC region and MENA oil exporters are likely to be stronger in their immediate geographical proximity, but also have global implications.international business cycle

    Multimodal thrombectomy device for treatment of acute deep venous thrombosis

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    Deep vein thrombosis (DVT) is a potentially deadly medical condition that is costly to treat and impacts thousands of Americans every year. DVT is characterized by the formation of blood clots within the deep venous system of the body. If a DVT dislodges it can lead to venous thromboembolism (VTE) and pulmonary embolism (PE), both of which can lead to significant morbidity or death. Current treatment options for DVT are limited in both effectiveness and safety, in part because the treatment of the DVT cannot be confined to a defined sequestered treatment zone. We therefore developed and tested a novel thrombectomy device that enables the sequesteration of a DVT to a defined treatment zone during fragmentation and evacuation. We observed that, compared to a predicate thrombectomy device, the sequestered approach reduced distal DVT embolization during ex vivo thrombectomy. The sequestered approach also facilitated isovolumetric infusion and suction that enabled clearance of the sequestered treatment zone without significantly impacting vein wall diameter. Results suggest that our novel device using sequestered therapy holds promise for the treatment of high risk large-volume DVTs

    A scoping review of registered nurses' delegating care and support to unlicenced care and support workers

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    Aim: To scope the international literature about registered nurses delegated models of care to unlicenced workers, identify gaps and reflect upon how the evidence relates to nursing in multiple contexts. Design: Scoping review of the peer reviewed literature from the year 2000 onwards, using the PRISMA-ScR checklist. Methods: The study searched the following databases in February 2022: CINAHL, Medline, ProQuest, and SCOPUS, and included keywords, Boolean operators and subject headings relevant to registered nurses delegating the provision of care to unlicenced workers. Results: A total of 49 articles met the eligibility criteria for this study, and relevant data were extractedThree models of delegation were highlighted within the literature: direct, indirect and a mixture of both. The data highlighted that direct delegation mainly occurred in acute contexts, with delegation decreasing with increasing patient acuity and/or complexity but the threshold of when this would occur was not clear. There was one intervention study that measured patient outcomes which could aid in the determination of what is effective delegation. For studies that did report on it (n = 6), there were few examples of better patient outcomes in cases where care was delegated from registered nurses to unlicenced workers. Conclusions: The scoping review highlighted heterogeneity in practice areas and methods of delegation practice. A key gap in literature is the absence of studies focusing on patient outcomes, with a clear baseline to measure and identify effective delegation practices. Additionally, the legal and logistical implications presented in both direct and indirect delegation practices is not evident in the literature. Implications for the Profession: Decisions related to delegation are often made at the service level and prescribed to those who work within the service, suggesting that models of indirect delegation are in fact not delegation at all, rather a re-distribution of nurses' work. Relevance to clinical practice: Delegation is a vital component of the scope of practice of registered nurses. This review has highlighted unique differences in delegation by practice context, where the proliferation of unlicensed workers in certain contexts places a vastly different professional and legal burden on the registered nurse

    Chemical-Scale Studies on the Role of a Conserved Aspartate in Preorganizing the Agonist Binding Site of the Nicotinic Acetylcholine Receptor

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    The nicotinic acetylcholine receptor and related Cys-loop receptors are ligand-gated ion channels that mediate fast synaptic transmission throughout the central and peripheral nervous system. A highly conserved aspartate residue (D89) that is near the agonist binding site but does not directly contact the ligand plays a critical part in receptor function. Here we probe the role of D89 using unnatural amino acid mutagenesis coupled with electrophysiology. Homology modeling implicates several hydrogen bonds involving D89. We find that no single hydrogen bond is essential to proper receptor function. Apparently, the side chain of D89 establishes a redundant network of hydrogen bonds; these bonds preorganize the agonist binding site by positioning a critical tryptophan residue that directly contacts the ligand. Earlier studies of the D89N mutant led to the proposal that a negative charge at this position is essential for receptor function. However, we find that receptors with neutral side chains at position 89 can function well, if the side chain is less perturbing than the amide of asparagine (nitro or keto groups allow function) or if a compensating backbone mutation is introduced to relieve unfavorable electrostatics

    Making exercise count: Considerations for the role of exercise in back pain treatment

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    Introduction: Chronic low back pain (CLBP) is pain that has persisted for greater than three months. It is common and burdensome and represents a significant proportion of primary health presentations. For the majority of people with CLBP, a specific nociceptive contributor cannot be reliably identified, and the pain is categorised as ‘non-specific’. Exercise therapy is recommended by international clinical guidelines as a first-line treatment for non-specific CLBP. Aim: This comprehensive review aims to synthesise and appraise the current research to provide practical, evidence-based guidance concerning exercise prescription for non-specific CLBP. We discuss detailed initial assessment and being informed by patient preferences, values, expectations, competencies and goals. Methods: We searched the Cochrane Database of Systematic Reviews, PubMed and the Physiotherapy Evidence Database (PEDro) using broad search terms from January 2000 to March 2021, to identify the most recent clinical practice guidelines, systematic reviews and randomised controlled trials on exercise for CLBP. Results/Discussion: Systematic reviews show exercise is effective for small, short-term reductions in pain and disability, when compared with placebo, usual care, or waiting list control, and serious adverse events are rare. A range of individualised or group-based exercise modalities have been demonstrated as effective in reducing pain and disability. Despite this consensus, controversies and significant challenges remain. Conclusion: To promote recovery, sustainable outcomes and self-management, exercise can be coupled with education strategies, as well as interventions that enhance adherence, motivation and patient self-efficacy. Clinicians might benefit from intentionally considering their own knowledge and competencies, potential harms of exercise and costs to the patient. This comprehensive review provides evidence-based practical guidance to health professionals who prescribe exercise for people with non-specific CLBP

    What Does It Take? California County Funding Requests for Recovery-Oriented Full Service Partnerships Under the Mental Health Services Act

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    The need to move mental health systems toward more recovery-oriented treatment modes is well established. Progress has been made to define needed changes but evidence is lacking about the resources required to implement them. The Mental Health Services Act (MHSA) in California was designed to implement more recovery-oriented treatment modes. We use data from county funding requests and annual updates to examine how counties budgeted for recovery-oriented programs targeted to different age groups under MHSA. Findings indicate that initial per-client budgeting for Full Services Partnerships under MHSA was maintained in future cycles and counties budgeted less per client for children. With this analysis, we begin to benchmark resource allocation for programs that are intended to be recovery-oriented, which should be evaluated against appropriate outcome measures in the future to determine the degree of recovery-orientation
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