This study aims to determine the effectiveness of main group elemental chemistry textbooks based on problem learning in improving student outcomes. The design this was a quasi-experiment with one pretest-posttest design. participants were sixth year education students at Universitas Sriwijaya for 2021/2022 academic year. Test instruments implied research and analyzed using statistics N-gain dat...

Abstract Current research efforts on single-atom catalysts (SACs) exclusively focus nonmetal or transition-metal atoms as active centers, while employing main-group metal elements is seemingly excluded because their delocalized s/p-bands are prone to yield a broadened resonance for the interaction with adsorbates. Here, we use high-throughput first-principles calculations investigate possible i...

the elements of euclid, sometimes knows as the “the book of euclid”, and in the mathematical texts of the islamic period often referred to as “the book of the elements”, is one of the main sources of islamic mathematics. this paper addresses the history of the translation of this book and its recension by naṣīr al-dīn ṭūsī. then, through a comparison of the first chapter of the fourth part of q...

the purpose of this survey was to examine the relationship between packaging and food products consumer behaviors in refah chain stores in iran. this research in terms of goal is an application research and regarding data collection method, it is a survey-descriptive. one-way repeated measures analysis of variance was used to compare the impacts of packaging elements, visual and informational, ...

the main purpose of this study is to investigate the preferences of urban dwellers for variouselements of urban parks in order to provide some important suggestions for rehabilitation of urban deficient parks. inthis regard, this study has conducted a survey in one of the oldest parks in khorramabad, iran, to reveal the overallsatisfaction of the park situation and to explore the preferences of...