| 1. |
- Ablikim, M., et al.
(författare)
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Study of eta(1475) and X(1835) in radiative J/psi decays to gamma phi
- 2018
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Ingår i: Physical Review D. - : AMER PHYSICAL SOC. - 2470-0010 .- 2470-0029. ; 97:5
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Tidskriftsartikel (refereegranskat)abstract
- The decay J/psi -> gamma gamma phi is studied using a sample of 1.31 x 10(9) J/psi events collected with the BESIII detector. Two structures around 1475 MeV/c(2) and 1835 MeV/c(2) are observed in the gamma phi invariant mass spectrum for the first time. With a fit on the gamma phi invariant mass, which takes into account the interference between the two structures, and a simple analysis of the angular distribution, the structure around 1475 MeV/c(2) is found to favor an assignment as the eta(1475) and the mass and width for the structure around 1835 MeV/c(2) are consistent with the X(1835). The statistical significances of the two structures are 13.5 sigma and 6.3 sigma, respectively. The results indicate that both eta(1475) and X(1835) contain a sizeable s (s) over bar component.
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| 2. |
- Vicedo-Cabrera, A.M., et al.
(författare)
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The burden of heat-related mortality attributable to recent human-induced climate change
- 2021
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Ingår i: Nature Climate Change. - : Nature Publishing Group. - 1758-678X .- 1758-6798. ; 11:6, s. 492-500
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Tidskriftsartikel (refereegranskat)abstract
- Climate change affects human health; however, there have been no large-scale, systematic efforts to quantify the heat-related human health impacts that have already occurred due to climate change. Here, we use empirical data from 732 locations in 43 countries to estimate the mortality burdens associated with the additional heat exposure that has resulted from recent human-induced warming, during the period 1991–2018. Across all study countries, we find that 37.0% (range 20.5–76.3%) of warm-season heat-related deaths can be attributed to anthropogenic climate change and that increased mortality is evident on every continent. Burdens varied geographically but were of the order of dozens to hundreds of deaths per year in many locations. Our findings support the urgent need for more ambitious mitigation and adaptation strategies to minimize the public health impacts of climate change.
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| 3. |
- Dung, Y., et al.
(författare)
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MicroRNA-135a participates in the development of astrocytes derived from bacterial meningitis by downregulating HIF-1 alpha
- 2019
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Ingår i: American Journal of Physiology-Cell Physiology. - : American Physiological Society. - 0363-6143 .- 1522-1563. ; 316:5
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Tidskriftsartikel (refereegranskat)abstract
- Accumulating evidence has highlighted the potential of microRNAs (miRs) as biomarkers in various human diseases. However, the roles of miRs in bacterial meningitis (BM), a severe infectious condition, still remain unclear. Thus, the present study aimed to investigate the effects of miR-135a on proliferation and apoptosis of astrocytes in BM. Neonatal rats were injected with Streptococcus pneumoniae to establish the BM model. The expression of miR-135a and hypoxia-inducible factor 1 alpha (HIF-1 alpha) in the BM rat models were characterized, followed by determination of their interaction. Using gain- and loss-of-function approaches, the effects of miR-135a on proliferation, apoptosis. and expression of glial fibrillary acidic protein (GFAP), in addition to apoptosis-related factors in astrocytes were examined accordingly. The regulatory effect of HIF-1 alpha was also determined along with the overexpression or knockdown of HIF-1 alpha. The results obtained indicated that miR-135a was poorly expressed, whereas HIF-1 alpha was highly expressed in the BM rat models. In addition, restored expression levels of miR-135a were determined to promote proliferation while inhibiting the apoptosis of astrocytes, along with downregulated Bax and Bad, as well as upregulated Bcl-2, Bcl-XL. and GFAP. As a target gene of miR-135a, HIF-1 alpha expression was determined to be diminished by miR-135a. The upregulation of HIF-1 alpha reversed the miR-135a-induced proliferation of astrocytes. Taken together, the key findings of the current study present evidence suggesting that miR-135a can downregulate HIF-1 alpha and play a contributory role in the development of astrocytes derived from BM. providing a novel theoretical perspective for BM treatment approaches.
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| 5. |
- Pham Thu, T., et al.
(författare)
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The politics of swidden : A case study from Nghe An and Son La in Vietnam
- 2020
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Ingår i: Land use policy. - : Elsevier BV. - 0264-8377 .- 1873-5754. ; 99
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Tidskriftsartikel (refereegranskat)abstract
- Swidden cultivation practices have been seen as a major driver of deforestation and forest degradation in Southeast Asia. Using two case studies from Vietnam, this paper examines discourses around swidden practices at multiple levels of governance. Our findings show diverse interpretations of swidden resulting in different policy preferences and policy translations when addressing the issue. At national level, swidden is blamed as a principal driver of deforestation and forest degradation, and as such is a practice to be eliminated. As a result of this national stance, provincial level authorities see the existence of swidden as a failure by which their political performance will be judged. Conversely, swidden communities are seen at district level as an innovative solution to help resource-limited police forces ensure national security in border areas. Local commune and village leaders view swidden as a traditional practice to be respected, so as to maintain harmonious relationships amongst social groups, and avoid ethnic groups protesting against the government. Such differences in discourses and political interests have led to swidden becoming an ‘invisible’ issue, with government authorities failing to collect and report on data. Not recognizing swidden also means that swidden actors are practically ‘forgotten’ in the design and implementation of Reducing Emissions from Deforestation and Forest Degradation (REDD+) and Payments for Ecosystem Services (PES). Their omission from forest conservation and management incentive programmes could lead to further social marginalization, and potentially result in deforestation and forest degradation in the area. Our findings suggest that REDD+ policies should take into account diverging political interests on controversial land uses such as swidden cultivation.
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