The Study of Isomeric Ratios in Photonuclear Reactions Forming High Spin Isomers in the Giant Dipole Resonance Region

We studied the isomeric ratios  in  odd-odd nuclei $^{196}$Au,$^{182}$Ta  and $^{194}$Ir  with    high spin isomeric states  produced  in $^{197}$Au$(\gamma,  n)$ $^{196m,g}$Au, $^{183}$W$(\gamma,  p)$ $^{182m,g}$Ta  and $^{185}$Pt$(\gamma,  p)$$^{194m,g}$Ir  reactions  by  using  the activation  technique  and  $\gamma$-ray  spectroscopic  method  in  the  giant    dipole  resonance  (GDR)  region.  The high-purity natural Au, W and Pt  foils in disc shape were irradiated with bremsstrahlungs  generated from an  electron  accelerator  Microtron.  The  irradiated  foils  were  measured  by  the  high  resolution  $\gamma$-ray spectroscopic system which consists of a Ge(HP) detector and a multichannel analyzer. In order to improve the  accuracy  of  the  experimental  results,  necessary  corrections  were  made  in  the  $\gamma$-ray  activity measurements and data analysis.  The results were  analyzed,  discussed and compared with those of other authors  as well as with theoretical model calculations.  The study shows that the isomeric ratios in  nuclei with high spin isomeric states are much lower than that in low spin isomeric state isomers

Global, regional, and national prevalence of adult overweight and obesity, 1990–2021, with forecasts to 2050: a forecasting study for the Global Burden of Disease Study 2021

Background: Overweight and obesity is a global epidemic. Forecasting future trajectories of the epidemic is crucial for providing an evidence base for policy change. In this study, we examine the historical trends of the global, regional, and national prevalence of adult overweight and obesity from 1990 to 2021 and forecast the future trajectories to 2050. Methods: Leveraging established methodology from the Global Burden of Diseases, Injuries, and Risk Factors Study, we estimated the prevalence of overweight and obesity among individuals aged 25 years and older by age and sex for 204 countries and territories from 1990 to 2050. Retrospective and current prevalence trends were derived based on both self-reported and measured anthropometric data extracted from 1350 unique sources, which include survey microdata and reports, as well as published literature. Specific adjustment was applied to correct for self-report bias. Spatiotemporal Gaussian process regression models were used to synthesise data, leveraging both spatial and temporal correlation in epidemiological trends, to optimise the comparability of results across time and geographies. To generate forecast estimates, we used forecasts of the Socio-demographic Index and temporal correlation patterns presented as annualised rate of change to inform future trajectories. We considered a reference scenario assuming the continuation of historical trends. Findings: Rates of overweight and obesity increased at the global and regional levels, and in all nations, between 1990 and 2021. In 2021, an estimated 1·00 billion (95% uncertainty interval [UI] 0·989–1·01) adult males and 1·11 billion (1·10–1·12) adult females had overweight and obesity. China had the largest population of adults with overweight and obesity (402 million [397–407] individuals), followed by India (180 million [167–194]) and the USA (172 million [169–174]). The highest age-standardised prevalence of overweight and obesity was observed in countries in Oceania and north Africa and the Middle East, with many of these countries reporting prevalence of more than 80% in adults. Compared with 1990, the global prevalence of obesity had increased by 155·1% (149·8–160·3) in males and 104·9% (95% UI 100·9–108·8) in females. The most rapid rise in obesity prevalence was observed in the north Africa and the Middle East super-region, where age-standardised prevalence rates in males more than tripled and in females more than doubled. Assuming the continuation of historical trends, by 2050, we forecast that the total number of adults living with overweight and obesity will reach 3·80 billion (95% UI 3·39–4·04), over half of the likely global adult population at that time. While China, India, and the USA will continue to constitute a large proportion of the global population with overweight and obesity, the number in the sub-Saharan Africa super-region is forecasted to increase by 254·8% (234·4–269·5). In Nigeria specifically, the number of adults with overweight and obesity is forecasted to rise to 141 million (121–162) by 2050, making it the country with the fourth-largest population with overweight and obesity. Interpretation: No country to date has successfully curbed the rising rates of adult overweight and obesity. Without immediate and effective intervention, overweight and obesity will continue to increase globally. Particularly in Asia and Africa, driven by growing populations, the number of individuals with overweight and obesity is forecast to rise substantially. These regions will face a considerable increase in obesity-related disease burden. Merely acknowledging obesity as a global health issue would be negligent on the part of global health and public health practitioners; more aggressive and targeted measures are required to address this crisis, as obesity is one of the foremost avertible risks to health now and in the future and poses an unparalleled threat of premature disease and death at local, national, and global levels. Funding: Bill & Melinda Gates Foundation

The Study of Isomeric Ratios in Photonuclear Reactions Forming High Spin Isomers in the Giant Dipole Resonance Region

We studied the isomeric ratios  in  odd-odd nuclei $^{196}$Au,$^{182}$Ta  and $^{194}$Ir  with    high spin isomeric states  produced  in $^{197}$Au$(\gamma,  n)$ $^{196m,g}$Au, $^{183}$W$(\gamma,  p)$ $^{182m,g}$Ta  and $^{185}$Pt$(\gamma,  p)$$^{194m,g}$Ir  reactions  by  using  the activation  technique  and  $\gamma$-ray  spectroscopic  method  in  the  giant    dipole  resonance  (GDR)  region.  The high-purity natural Au, W and Pt  foils in disc shape were irradiated with bremsstrahlungs  generated from an  electron  accelerator  Microtron.  The  irradiated  foils  were  measured  by  the  high  resolution  $\gamma$-ray spectroscopic system which consists of a Ge(HP) detector and a multichannel analyzer. In order to improve the  accuracy  of  the  experimental  results,  necessary  corrections  were  made  in  the  $\gamma$-ray  activity measurements and data analysis.  The results were  analyzed,  discussed and compared with those of other authors  as well as with theoretical model calculations.  The study shows that the isomeric ratios in  nuclei with high spin isomeric states are much lower than that in low spin isomeric state isomers. </jats:p

Expanded morphological definition and molecular phylogenetic position of the Tam Dao mountain stream keelback Opisthotropis tamdaoensis (Squamata: Natricidae) from Vietnam

Volume: 124Start Page: 377End Page: 38