https://www.selleckchem.com/products/ca77-1.html Regression analysis based on data from Oxford COVID-19 Government Response Tracker and the World Bank datasets for 169 countries suggests that containment policies have, in general, a significant role in reducing the pandemic's fatality rate across all countries. However (i) there is at least a three weeks lag in realising the impact, (ii) the effectiveness increases with per capita income and, more specifically, (iii) workplace closure is ineffective in low-income countries. The analysis of data from Demographic and Health Survey (the DHS Programme) and IMF Policy Tracker indicates that developing countries are unlikely to have the basis required for effectively adopting stringent lockdown measures and instead would need to consider specifically targeted lockdown policies. The online version contains supplementary material available at 10.1057/s41287-021-00389-x. The online version contains supplementary material available at 10.1057/s41287-021-00389-x.In the shadow of the coronavirus (Covid-19) pandemic, the sterilization has become a major necessity for humans to avoid exponential Infection. In order to avoid touching contaminated surfaces, we develop an embedded system prototype, which allows the bottle or any other medium to pour the sterilization product without touching it. The human hands are detected using two sensors HC-SR04 and LM35. To overcome the stability problem due to the problem of sensor noise and enhance the system performance a Kalman filter algorithm is implemented to ensure stable hands detection. The efficiency of the prototype mounted on an Arduino board is checked. After the completion of the prototype, a comprehensive cost analysis is conducted.Supply chain finance is an effective way to solve the problem of capital turnover of construction enterprises and stabilize economic growth under epidemic situation. Blockchain technology can solve the problems in the current supply chain finance busi