Background and purpose: In this study, the air quality index and concentration of particles such as PM10 and PM2.5 were investigated in Arak. Materials and Methods: To determine the concentration of PM10 and PM2.5, 60 samples were collected by laser TSI model 8520 in summer and winter 2012. The collection site was around Arak city center. Results: during the sampling period, as a matter of PM10...

Anthraquinone (AQ) derivatives with relatively high reduction potentials have been synthesized to afford good candidates for electron transfer studies in DNA. Electron withdrawing groups on the anthraquinone ring gave derivatives with less negative reduction potentials. The anthraquinone imide (AQI) derivatives had reduction potentials less negative than AQ derivatives. The AQI ring system was ...

Abstract The COVID-19, the most deadly challenge human being could have imagined, has become a reality now and whole world is passing through worst pandemic situation. From challenges of invention life saving vaccine or medicine to keeping economy at right track are talked about hurdles in front all us. But if we look other side coin, blessings that came form disguise be realised. paper emphasi...

Background: The impacts of lockdown on air pollution have been examined in various parts the world. concentration main pollutants has decreased owing to a decline anthropogenic activities like fossil fuel burning, etc. aim this research was assess urban areas Pakistan. Methods: present study conducted quality index (AQI) Pakistan based pre- and post-lockdown effects mortality rate due coronavir...

1. introduction: increasing urbanization and industrialization rate in developed and developing countries cities, such as tehran, has led to increased air pollution. todays, the prediction and estimation of air quality parameters in urban regions are important topics in environmental studies due to their effect on human health. measurement of air quality are widely used in air quality control p...

Due to the limited number of air quality monitoring stations, data collected are limited. Using supervised learning for fine-grained analysis, that is used predict index (AQI) locations without may lead overfitting in models have superior performance on training set but perform poorly validation and testing set. In order avoid this problem learning, most effective solution increase amount data,...

A worldwide pandemic of COVID-19 has forced the Government Bangladesh to implement a lockdown during April–May 2020 by restricting people’s movement; shutdown industries and motor vehicles; closing markets, public places, schools contain virus. This type strict measures caused an outcome, reduction urban air pollution, around world. The present study aims investigate concentration pollutants in...

Objectives: To develop an IoT (Internet of Things) based Solar Energized Weather Monitoring System (I-SOEWM) that incorporates efficient mechanism to receive real-time weather reports both locally and remotely. Methods: Improved localized monitoring system powered by a renewable solar energy has been developed provide continuous parameters namely temperature, humidity, pressure, air quality, et...

Air quality has always been one of the most important environmental concerns for general public and society. Using machine learning algorithms Quality Index (AQI) prediction is helpful analysis future air trends from a macro perspective. When conventionally using single model to predict quality, it challenging achieve good outcome under various AQI fluctuation trends. In order effectively addre...