Abstract Background Childhood mortality persists as a significant public health challenge in low and middle-income countries and is uneven within countries, with poor communities such as urban informal settlements bearing the highest burden.There is limited literature from urban informal settlements on the risk factors of mortality.We assessed unde

In recent years, the performance of perovskite solar cells (PSCs) has made a significant growth of about 25.5%.Nonetheless, the long-term stability of these cells for industrial production is still a major concern.One of the important reasons for the instability and degradation of the perovskite layer is its sensitivity toward moisture, oxygen, lac