Geology and Production of Helium and Associated Gases brings together several different theories and models on how helium is generated, migrated to the reservoir, and trapped from several geologic rock types. The importance of this element in society cannot be stressed enough, but helium is in significant short supply. Nitrogen is also important in the fertilizer industry and is a byproduct of helium and natural gas production. Nitrogen presence often indicates the presence of Helium. This book brings together a tremendous amount of geology, engineering, and production methods not available elsewhere in one source.

Exam Board: OCR Level: A level Subject: Science / Chemistry First teaching: September 2015 First exams: June 2017 An ActiveBook is included with every Student Book, giving your students easy online access to the content in the Student Book. They can make it their own with notes, highlights and links to their wider reading. Perfect for supporting work and revision activities. Student Book 1 supports a standalone AS course and provides the first year of a two-year A level course; Student Books 1 and 2 together support the full A level course. A cumulative approach to learning constantly builds on what has previously been taught. The chapter openers highlight prior learning requirements and link to future learning. The required maths skills are highlighted at the start of each chapter providing opportunities for students to check understanding and remedy gaps. Bigger spreads require students to read real-life material that's relevant to the course and use knowledge in new contexts. Accompanying questions require students to analyse how scientists write, think critically and consider issues. Preparing for your exams sections highlight the key differences between preparing for an AS and full A level exam. Practice question spreads provide opportunities for students to regularly check their understanding using questions written in the style of the new exams from day one.

Annual Reports in Medicinal Chemistry, Volume 57 in this long-running series, highlights new advances in the field with this new volume presenting interesting chapters on the Mechanism of action of the broadly acting antiviral drug remdesivir, Improving properties of the nucleobase analogue T-706 as a potential anti-SARS-CoV-2 and anti-influenza compound, Antivirals for RNA virus infections Anno 2020-2021, Broad spectrum antiviral fleximer nucleosides, SARS-CoV-2 main protease inhibitors, The search for antivirals to treat alphavirus infections, Inhibitors of Ebola Virus targeting Innate immune evasion, Uracil derivatives as non-nucleoside inhibitors of viral infections, and more.

Advances in Remediation Techniques for Polluted Soils and Groundwater focuses on the thematic areas for assessment, mitigation, and management of polluted sites. This book covers advances in modelling approaches, including Machine Learning (ML)/ Artificial Intelligence (AI) applications; GIS and remote sensing; sensors; impacts of climate change on geogenic contaminants; and socio-economic impacts in the poor rural and urban areas, which are lacking in a more comprehensive manner in the previous titles. This book encompasses updated information as well as future directions for researchers working in the field of management and remediation of polluted sites.

Developed for the new International A Level specification, these new resources are specifically designed for international students, with a strong focus on progression, recognition and transferable skills, allowing learning in a local context to a global standard. Recognised by universities worldwide and fully comparable to UK reformed GCE A levels. Supports a modular approach, in line with the specification. Appropriate international content puts learning in a real-world context, to a global standard, making it engaging and relevant for all learners. Reviewed by a language specialist to ensure materials are written in a clear and accessible style. The embedded transferable skills, needed for progression to higher education and employment, are signposted so students understand what skills they are developing and therefore go on to use these skills more effectively in the future. Exam practice provides opportunities to assess understanding and progress, so students can make the best progress they can.