2,536 research outputs found
Tempering and enabling ambition: how equity is considered in domestic processes preparing NDCs
The considerations of how Nationally Determined Contributions (NDCs) to global climate action under the Paris Agreement are ambitious and fair, or equitable, is expected to guide countriesâ decisions with regards to the ambition and priorities of those contributions. This article investigates the equity aspect of the NDCs of four cases (Canada, the EU, Kenya, and South Africa) utilizing a combination of document analysis and expert interviews. It interrogates both the NDC documents themselves and, uniquely, the role of international and domestic equity considerations within the domestic policy processes that led to the formulation of the NDCs. For this, 30 participants and close observers of these processes were interviewed. We find countervailing effects of equity on ambition, with an enabling, or ambition-enhancing, effect resulting from international equity, in that these four Parties show willingness to do more if others do, too. In contrast, tempering effect appears to result from domestic equity concerns, for example with regards to real, perceived, or anticipated adverse distributional impacts of climate action across regions, sectors, and/or societal strata. Political cultures differ across the four case studies, as do the key actors that influence domestic policies and the preparations of NDCs. This paper also demonstrates that research on equity in NDCs can benefit from expanding its scope from the contents of NDC submissions to also examine the underlying decision-making processes, to generate insights that can contribute to future NDCs being both equitable and ambitious
Expanding global distribution of rotavirus serotype G9: detection in Libya, Kenya, and Cuba.
Serotype G9 may be the fifth most common human rotavirus serotype, after serotypes G1 to G4. In three cross-sectional studies of childhood diarrhea, we have detected serotype G9 rotaviruses for the first time in Libya, Kenya, and Cuba. Serotype G9 constituted 27% of all rotaviruses identified, emphasizing the reemergence of serotype G9 and suggesting that future human rotavirus vaccines will need to protect against disease caused by this serotype
Synthesis of protein conjugates adsorbed on cationic liposomes surface
The well-known Toll like receptor 9 (TLR9) agonist CpG ODN has shown promising results as vaccine adjuvant in preclinical and clinical studies, however its in vivo stability and potential systemic toxicity remain a concern. In an effort to overcome these issues, different strategies have been explored including conjugation of CpG ODN with proteins or encapsulation/adsorption of CpG ODN into/onto liposomes. Although these methods have resulted in enhanced immunopotency compared to co-administration of free CpG ODN and antigen, we believe that this effect could be further improved. Here, we designed a novel delivery system of CpG ODN based on its conjugation to serve as anchor for liposomes. Thiol-maleimide chemistry was utilised to covalently ligate model protein with the CpG ODN TLR9 agonist. Due to its negative charge, the protein conjugate readily electrostatically bound cationic liposomes composed of 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC), cholesterol and dimethyldioctadecylammonium bromide (DDA) in a very high degree. The novel cationic liposomes-protein conjugate complex shared similar vesicle characteristics (size and charge) compared to free liposomes. The conjugation of CpG ODN to protein in conjunction with adsorption on cationic liposomes, could promote co-delivery leading to the induction of immune response at low antigen and CpG ODN doses. âą The CpG ODN Toll-like receptor (TLR) 9 agonist was conjugated to protein antigens via thiol-maleimide chemistry. âą Due to their negative charge, protein conjugates readily electrostatically bound cationic liposomes composed of 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC), cholesterol and dimethyldioctadecylammonium bromide (DDA) resulting to the design of novel cationic liposomes-protein conjugate complexes. âą The method is suited for the liposomal delivery of a variety of adjuvant-protein conjugates
Individual leader to interdependent leadership: A case study in leadership development and tripartite evaluation
This article is available open access through the publisherâs website at the link below. Copyright @ 2013 Sage Publications.The Problem - In this case study we see a move away from orthodox views of school leadership as âheadshipâ to a more contemporary model of educational leadership wherein we note a departure from functional, curricula-based school leadership toward more human resource development (HRD) approaches. The aim of this study was to consider the effectiveness of an educational development program for middle leaders within an educational establishment.
The Solution - We examined the impact of a bespoke higher education leadership development intervention in Leadership (and Change) on the formation and cohesiveness of a newly formed innovative leadership structure.
The Stakeholders - The leadership development intervention was designed through a tripartite collaboration including a university, senior school leaders, and staff. The intervention was designed to shift leadership from individual leader agency to interdependent human leadership agency. Through tripartite evaluation we uncover leadership development praxis that transcends the boundaries of conventional educational leadership and reemphasizes the benefits of bridging the academic/practitioner divide and the application of theory to praxis
Biosynthesis of 3,4-didehydroretinol from retinol by human skin keratinocytes in culture
Rapid retreat of permafrost coastline observed with aerial drone photogrammetry
Permafrost landscapes are changing around the Arctic in response to climate
warming, with coastal erosion being one of the most prominent and hazardous
features. Using drone platforms, satellite images, and historic aerial
photographs, we observed the rapid retreat of a permafrost coastline on
Qikiqtaruk â Herschel Island, Yukon Territory, in the Canadian Beaufort Sea.
This coastline is adjacent to a gravel spit accommodating several culturally
significant sites and is the logistical base for the Qikiqtaruk â Herschel
Island Territorial Park operations. In this study we sought to (i)Â assess
short-term coastal erosion dynamics over fine temporal resolution,
(ii)Â evaluate short-term shoreline change in the context of long-term
observations, and (iii)Â demonstrate the potential of low-cost lightweight
unmanned aerial vehicles (âdronesâ) to inform coastline studies and
management decisions. We resurveyed a 500 m permafrost coastal reach at high
temporal frequency (seven surveys over 40 d in 2017). Intra-seasonal
shoreline changes were related to meteorological and oceanographic variables
to understand controls on intra-seasonal erosion patterns. To put our
short-term observations into historical context, we combined our analysis of
shoreline positions in 2016 and 2017 with historical observations from 1952,
1970, 2000, and 2011. In just the summer of 2017, we observed coastal retreat
of 14.5 m, more than 6 times faster than the long-term average rate of
2.2±0.1 m aâ1 (1952â2017). Coastline retreat rates exceeded
1.0±0.1 m dâ1 over a single 4 d period. Over 40 d, we estimated
removal of ca. 0.96 m3 mâ1 dâ1. These findings highlight
the episodic nature of shoreline change and the important role of storm
events, which are poorly understood along permafrost coastlines. We found
drone surveys combined with image-based modelling yield fine spatial
resolution and accurately geolocated observations that are highly suitable to
observe intra-seasonal erosion dynamics in rapidly changing Arctic
landscapes.</p
Dephosphorylation of YB-1 is Required for Nuclear Localisation During G2 Phase of the Cell Cycle
Elevated levels of nuclear Y-box binding protein 1 (YB-1) are linked to poor prognosis in cancer. It has been proposed that entry into the nucleus requires specific proteasomal cleavage. However, evidence for cleavage is contradictory and high YB-1 levels are prognostic regardless of cellular location. Here, using confocal microscopy and mass spectrometry, we find no evidence of specific proteolytic cleavage. Doxorubicin treatment, and the resultant G2 arrest, leads to a significant increase in the number of cells where YB-1 is not found in the cytoplasm, suggesting that its cellular localisation is variable during the cell cycle. Live cell imaging reveals that the location of YB-1 is linked to progression through the cell cycle. Primarily perinuclear during G1 and S phases, YB-1 enters the nucleus as cells transition through late G2/M and exits at the completion of mitosis. Atomistic modelling and molecular dynamics simulations show that dephosphorylation of YB-1 at serine residues 102, 165 and 176 increases the accessibility of the nuclear localisation signal (NLS). We propose that this conformational change facilitates nuclear entry during late G2/M. Thus, the phosphorylation status of YB-1 determines its cellular location
- âŠ