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We examine economic convergence among subnational regions of Bangladesh over the period 1992–2013. Unavailability of the traditional gross domestic product (GDP) for subnational areas and building on findings of recent luminosity literature, we use night lights intensity as a proxy for local economic activity to test the convergence hypothesis. Our results show the existence of both absolute and conditional convergence in night lights intensity, but with a very long half-life of convergence. Moreover, the results also indicate sigma divergence. Together, these findings suggest that regional disparity is persistent and wide across Bangladesh's 544 upazilas (subdistricts). There is evidence that lagging upazilas are catching up with the better off ones, but many are also converging with their neighbors or peers (a phenomenon known as “club convergence”). Overall, consistent with the evidence from studies on regional inequality in Bangladesh, our results also indicate that there is an “east-west” divide in luminosity across the subnational units in Bangladesh.

Aim and Background: The objective of this study was to investigate the presence of aflatoxin M 1 (AFM 1 ) in milk, yogurt, and cheese samples collected from Tabriz, Iran. Additionally, the study conducted a risk assessment related to the consumption of milk and dairy products within Tabriz city., Study Method: For this study, 56 samples (raw milk, pasteurized milk, ultra-high temperature milk (UHT), traditional yogurt, pasteurized yogurt, traditional cheese, and pasteurized cheese) were collected randomly in Tabriz from December 2021 to March 2022. The analysis was carried out using liquid chromatography, which was equipped with a fluorescence detector. The estimated dietary intake (EDI) and the hazard index (HI) were calculated for the risk assessment., Results and Discussion: AFM 1 was detected in all samples. The highest concentration of AFM 1 was observed in traditional cheese (P < 0.05). The lowest concentration was observed in UHT milk and there were no significant differences between the various milk types and pasteurized yogurt (P > 0.05). Moreover, in all samples, the levels of AFM 1 were below the maximum limit permitted by Iranian national standards. AFM 1 levels in traditional yogurt exceeded the European Union's permissible limit in 25% of the samples. The HI in all samples was less than one for both adult and child consumers, except for milk samples for children, which were more than one and indicated a medium risk. In conclusion, the levels of contamination in milk and dairy products and risk assessment appear not to pose a public health risk to Tabriz consumers., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Ltd. All rights reserved.)