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Effect of morpholine, and 4-methylmorpholine on urethane formation: a computational study
Abstract A theoretical study of urethane formation through the reaction of phenyl isocyanate and butan-1-ol was carried out, without and in the presence of morpholine, and 4-methylmorpholine catalysts. The reaction with and without catalysts was studied at BHandHLYP/6-31G(d) and G3MP2BHandHLYP levels of theories. The reaction mechanism in the presence of catalysts differs significantly from the…
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Robots may transform the way we produce and prepare food
Robotics technologies are finding their way into the food production chain, from agriculture robots ‘working’ on farms, to 3D food printers generating customized dishes in the kitchen. In this Viewpoint, two roboticists, Hod Lipson and Salah Sukkarieh, discuss the possible roles of robotics in shaping the future of food, highlighting how robots may be able…
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The politics of energy security
Energy security concerns must be considered not only in terms of energy availability at an affordable price, but also from a political and social sciences perspective. Energy security concerns have recently been thrown into stark relief for the Global North. Supply-chain issues and protectionist policies brought an energy crisis to the fore during the COVID-19…
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Trans-inclusive gender categories are cognitively natural
On the basis of decades of cognitive science research into the nature of lexical concepts, we argue that gender categories that reflect the reality of the experiences of transgender people are more useful and cognitively natural than sex-based category definitions. Many people make a distinction between gender and sex: sex-based categories are defined on the…
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Biodiversity in Vermont
Unfortunately, the disastrous Dutch elm disease felled an estimated 77 million American elms in the 1970s. To restore American elms to their former importance on our floodplains, we are working with the US Forest Service to develop a genetically diverse population of elms that are Dutch elm disease-tolerant. The restoration of elms is critical in…
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Carlos Mariscal
Summary Before joining the department of philosophy at the University of Nevada, Reno, Professor Carlos A. Mariscal was a Herzberg Postdoctoral Fellow working with W. Ford Doolittle in the departments of biochemistry & molecular biology and philosophy in Dalhousie University. He received his Ph.D. from Duke University. Carlos works in areas related to the evolution,…
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FEATURE Artists join with climate activists, scientists to paint a greener future
Summary Companies Artists call out fossil fuel projects in the Global South Climate change evidence highlighted in art works, exhibitions Art gives local problems visibility in global conversations DHAKA, Oct 19 (Thomson Reuters Foundation) – Investors in U.S. energy technology firm GE Vernova had some unlikely visitors in September when Ata Mojlish, a Bangladeshi new…
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This fast radio burst took 8 billion years to reach Earth
The fast radio burst came from a galaxy, or galaxies, 8 billion light years from Earth.Credit: ESO/M. Kornmesser Scientists have measured the most well-travelled fast radio burst to date. The bright, briefly detectable flash of energy has barrelled through the Universe for around eight billion years — almost half the age of the Universe —…
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‘Mind-blowing’ IBM chip speeds up AI
The NorthPole chip developed by IBM brings memory and processing together, allowing vast improvements in image recognition and other computing tasksCredit: IBM Corp. A brain-inspired computer chip that could supercharge artificial intelligence (AI) by working faster with much less power has been developed by researchers at IBM in San Jose, California. Their massive NorthPole processor…
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Flow study of Dean’s instability in high aspect ratio microchannels
Abstract Dean’s flow and Dean’s instability have always been important concepts in the inertial microfluidics. Curved channels are widely used for applications like mixing and sorting but are limited to Dean’s flow only. This work first reports the Dean’s instability flow in high aspect ratio channels on the deka-microns level for (De>162). A new channel…