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Information is encoded in data. This is true for most aspects of modern everyday life, but it is also true in most branches of contemporary physics, and extracting useful and meaningful information from very large data sets is a key mission for many physicists.
In statistical mechanics, large data sets are daily business. A classic example is the partition function, a complex mathematical object that describes physical systems at equilibrium. This mathematical object can be seen as made up by many points, each describing a degree of freedom of a physical system, that is, the minimum number of data that can describe all of its properties.
Scientists at St Petersburg University have developed a new technology to prevent lithium-ion batteries from catching fire. What scientists propose is to use a chemical fuse to cover the main conductor cable of the battery. It is a special protective covering made from conducting polymer. In case of abnormal situation, it breaks circuits and prevents the battery from catching fire.
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Fundamentals of Materials Engineering - A Basic Guide is a helpful textbook for readers learning the basics of materials science. This book covers important topics and fundamental concepts of materials engineering including crystal structure, imperfections, mechanical properties of materials, polymers, powder metallurgy, corrosion and composites. The authors have explained the concepts in an effective way and by using simple language for the benefit of a broad range of readers. This book is also beneficial to the students in engineering courses at B.Sc, M.Sc, and M.Tech. levels.
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About the Author:
Dr. Shashanka Rajendrachari is currently working as an Assistant Professor in the Department of Metallurgical and Materials Engineering, Bartin University, Turkey. He obtained a Ph.D. in powder metallurgy from the Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela, India. He was named as the grand powder metallurgy student of th
Credit: Saarland University/Oliver Dietze
The formation of double bonds between two carbon atoms (C=C) is of central significance in natural organisms. The vast majority of natural substances therefore contain one or more of these double bonds. Compounds with C=C double bonds, the alkenes or olefins, also play a prominent role in the organic chemical industry. A great many chemical processes have therefore been developed over the years to control the formation of C=C bonds.
One such process, olefin metathesis, has received particular attention over the last few decades and the 2005 Nobel Prize for Chemistry was awarded in recognition of its significance.
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Credit: Mj Riches
In the 1995 movie Outbreak, Dustin Hoffman s character realizes, with appropriately dramatic horror, that an infectious virus is airborne because it s found to be spreading through hospital vents.
The issue of whether our real-life pandemic virus, SARS-CoV-2, is airborne is predictably more complex. The current body of evidence suggests that COVID-19 primarily spreads through respiratory droplets - the small, liquid particles you sneeze or cough, that travel some distance, and fall to the floor. But consensus is mounting that, under the right circumstances, smaller floating particles called aerosols can carry the virus over longer distances and remain suspended in air for longer periods. Scientists are still determining SARS-CoV-2 s favorite way to travel.