Higher Order Two Step Mechanisms in Nucleon Antinucleon Annihilation and the OZI Rule

We evaluate three meson doorway mechanisms for nucleon-antinucleon annihilation at rest for the first time. Detailed results are presented for the final state phi pi0 originating from the 3S1 initial state and for the phi rho channel originating from 1S0. The results presented also include the improved contributions from two meson doorway states and from the tree diagrams. For all the channels considered a consistent explanation of large and small OZI violations emerges.Comment: 18 pages, 2 PostScript figures, will be published in Eur. Phys. J.

Lignanos en hojas de virola sebifera

De las hojas de Virola sebifera fueron aislados tres lignanos furofuránicos: (+ )-sesamina, (+ )-kobusina y (-t- )-eudesmina. Se describe una adaptación de la técnica de cromatografía liquida al vacío

Non-indigenous partner perspectives on indigenous peoples' involvement in renewable energy: exploring reconciliation as relationships of accountability or status quo innocence?

This is the author accepted manuscript. The final version is available from Emerald via the DOI in this record This research considers the potential for renewable energy partnerships to contribute to Canada's efforts to overcome its colonial past and present by developing an understanding of how non-Indigenous peoples working in the sector relate to their Indigenous partners. Design/methodology/approach This study is part of a larger research program focused on decolonization and reconciliation in the renewable energy sector. This exploratory research is framed by energy justice and decolonial reconciliation literatures relevant to the topic of Indigenous-led renewable energy. The authors used content and discourse analysis to identify themes arising from 10 semi-structured interviews with non-Indigenous corporate and governmental partners. Findings Interviewees’ lack of prior exposure to Indigenous histories, cultures and acknowledgement of settler colonialism had a profound impact on their engagement with reconciliation frameworks. Partners' perspectives on what it means to partner with Indigenous peoples varied; most dismissed the need to further develop understandings of reconciliation and instead focused on increasing community capacity to allow Indigenous groups to participate in the renewable energy transition. Research limitations/implications In this study, the authors intentionally spoke with non-Indigenous peoples working in the renewable energy sector. Recruitment was a challenge and the sample is small. The authors encourage researchers to extend their questions to other organizations in the renewable energy sector, across industries and with Indigenous peoples given this is an under-researched field. Originality/value This paper is an early look at the way non-Indigenous “partners” working in renewable energy understand and relate to topics of reconciliation, Indigenous rights and self-determination. It highlights potential barriers to reconciliation that are naïvely occurring at organizational and institutional levels, while anchored in colonial power structures.Canadian Institutes for Health Researc

Diarilpropanos y derivado indolico en madera de virola sebifera y virola calophylloidea

De la madera de Virola sebifera fueron aislados tres díarilpropanos: 1-(4'-hidroxi-2'-metoxifenil-3-(3"-hidrox¡-4"-metoxifenil)-propano, Virolanol B y Virolanol C. De la madera de Virola calophylloidea fue aislado el 3-¡ndolcarboxaldehido

Incidence, Risk Factors, and Outcomes of Patients Who Develop Mucosal Barrier Injury-Laboratory Confirmed Bloodstream Infections in the First 100 Days after Allogeneic Hematopoietic Stem Cell Transplant

Importance: Patients undergoing hematopoietic stem cell transplant (HSCT) are at risk for bloodstream infection (BSI) secondary to translocation of bacteria through the injured mucosa, termed mucosal barrier injury-laboratory confirmed bloodstream infection (MBI-LCBI), in addition to BSI secondary to indwelling catheters and infection at other sites (BSI-other). Objective: To determine the incidence, timing, risk factors, and outcomes of patients who develop MBI-LCBI in the first 100 days after HSCT. Design, Setting, and Participants: A case-cohort retrospective analysis was performed using data from the Center for International Blood and Marrow Transplant Research database on 16875 consecutive pediatric and adult patients receiving a first allogeneic HSCT from January 1, 2009, to December 31, 2016. Patients were classified into 4 categories: MBI-LCBI (1481 [8.8%]), MBI-LCBI and BSI-other (698 [4.1%]), BSI-other only (2928 [17.4%]), and controls with no BSI (11768 [69.7%]). Statistical analysis was performed from April 5 to July 17, 2018. Main Outcomes and Measures: Demographic characteristics and outcomes, including overall survival, chronic graft-vs-host disease, and transplant-related mortality (only for patients with malignant disease), were compared among groups. Results: Of the 16875 patients in the study (9737 [57.7%] male; median [range] age, 47 [0.04-82] years) 13686 (81.1%) underwent HSCT for a malignant neoplasm, and 3189 (18.9%) underwent HSCT for a nonmalignant condition. The cumulative incidence of MBI-LCBI was 13% (99% CI, 12%-13%) by day 100, and the cumulative incidence of BSI-other was 21% (99% CI, 21%-22%) by day 100. Median (range) time from transplant to first MBI-LCBI was 8 (<1 to 98) days vs 29 (<1 to 100) days for BSI-other. Multivariable analysis revealed an increased risk of MBI-LCBI with poor Karnofsky/Lansky performance status (hazard ratio [HR], 1.21 [99% CI, 1.04-1.41]), cord blood grafts (HR, 2.89 [99% CI, 1.97-4.24]), myeloablative conditioning (HR, 1.46 [99% CI, 1.19-1.78]), and posttransplant cyclophosphamide graft-vs-host disease prophylaxis (HR, 1.85 [99% CI, 1.38-2.48]). One-year mortality was significantly higher for patients with MBI-LCBI (HR, 1.81 [99% CI, 1.56-2.12]), BSI-other (HR, 1.81 [99% CI, 1.60-2.06]), and MBI-LCBI plus BSI-other (HR, 2.65 [99% CI, 2.17-3.24]) compared with controls. Infection was more commonly reported as a cause of death for patients with MBI-LCBI (139 of 740 [18.8%]), BSI (251 of 1537 [16.3%]), and MBI-LCBI plus BSI (94 of 435 [21.6%]) than for controls (566 of 4740 [11.9%]). Conclusions and Relevance: In this cohort study, MBI-LCBI, in addition to any BSIs, were associated with significant morbidity and mortality after HSCT. Further investigation into risk reduction should be a clinical and scientific priority in this patient population

Global Research Alliance N2O chamber methodology guidelines : Summary of modeling approaches

Acknowledgements Funding for this publication was provided by the New Zealand Government to support the objectives of the Livestock Research Group of the Global Research Alliance on Agricultural Greenhouse Gases. Individual authors work contribute to the following projects for which support has been received: Climate smart use of Norwegian organic soils (MYR, 2017-2022) project funded by the Research Council of Norway (decision no. 281109); Scottish Government's Strategic Research Programme, SuperG (under EU Horizon 2020 programme); DEVIL (NE/M021327/1), Soils-R-GRREAT (NE/P019455/1) and the EU H2020 project under Grant Agreement 774378—Coordination of International Research Cooperation on Soil Carbon Sequestration in Agriculture (CIRCASA); to project J-001793, Science and Technology Branch, Agriculture and Agri-Food Canada; and New Zealand Ministry of Business, Innovation and Employment (MBIE) core funding. Thanks to Alasdair Noble and the anonymous reviewers for helpful comments on a draft of this paper and to Anne Austin for editing services.Peer reviewedPublisher PD