Science

最新文章

• MRI study charts organ damage months after COVID-19 Imaging revealed no signs of lingering heart problems AI翻译
  作者：Offord, Catherine
• Handling fluorinated gases as solid reagents using metal-organic frameworks AI翻译
  作者：Keasler, Kaitlyn T.; Zick, Mary E.; Stacy, Emily E.; Kim, Jaehwan; Lee, Jung-Hoon; Aeindartehran, Lida; Runcevski, Tomce; Milner, Phillip J.
  作者单位：Cornell University; Korea Institute of Science & Technology (KIST); Southern Methodist University
  摘要：Fluorine is an increasingly common substituent in pharmaceuticals and agrochemicals because it improves the bioavailability and metabolic stability of organic molecules. Fluorinated gases represent intuitive building blocks for the late-stage installation of fluorinated groups, but they are generally overlooked because they require the use of specialized equipment. We report a general strategy for handling fluorinated gases as benchtop-stable solid reagents using metal-organic frameworks (MOFs...
• An epigenetic clock in plantsDNA methylation can identify evolutionary relationships among close plant lineages AI翻译
  作者：Satyaki, P. R. V.
  作者单位：University of Toronto; University Toronto Scarborough
• Foreign Bodies: Pandemics, Vaccines, and the Health of Nations AI翻译
  作者：Goldman, Michael A.
  作者单位：California State University System; San Francisco State University
  摘要：Distrust and xenophobia have long been stumbling blocks during public health crises Distrust and xenophobia have long been stumbling blocks during public health crises
• Heat-proofing India Cities in India are testing measures that could help urban populations worldwide cope with rising temperatures AI翻译
  作者：Chandrashekhar, Vaishnavi
• Integrative neurocircuits that control metabolism and food intake AI翻译
  作者：Bruening, Jens C.; Fenselau, Henning
  作者单位：University of Cologne; University of Cologne; University of Cologne; German Center for Diabetes Research (DZD)
  摘要：Systemic metabolism has to be constantly adjusted to the variance of food intake and even be prepared for anticipated changes in nutrient availability. Therefore, the brain integrates multiple homeostatic signals with numerous cues that predict future deviations in energy supply. Recently, our understanding of the neural pathways underlying these regulatory principles-as well as their convergence in the hypothalamus as the key coordinator of food intake, energy expenditure, and glucose metabol...
• Moments and people who shaped AAAS as it turns 175 AI翻译
  作者：Ham, Becky
• Widening the use of 3D printing A light-triggered fabrication method extends the functionality of printable nanomaterials AI翻译
  作者：Balazs, Daniel M.; Ibanez, Maria
  作者单位：Institute of Science & Technology - Austria
• Diverse functional polyethylenes by catalytic amination AI翻译
  作者：Ciccia, Nicodemo R.; Shi, Jake X.; Pal, Subhajit; Hua, Mutian; Malollari, Katerina G.; Lizandara-Pueyo, Carlos; Risto, Eugen; Ernst, Martin; Helms, Brett A.; Messersmith, Phillip B.; Hartwig, John F.
  作者单位：University of California System; University of California Berkeley; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; University of California System; University of California Berkeley; University of California System; University of California Berkeley; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; BASF; BASF; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory
  摘要：Functional polyethylenes possess valuable bulk and surface properties, but the limits of current synthetic methods narrow the range of accessible materials and prevent many envisioned applications. Instead, these materials are often used in composite films that are challenging to recycle. We report a Cu-catalyzed amination of polyethylenes to form mono- and bifunctional materials containing a series of polar groups and substituents. Designed catalysts with hydrophobic moieties enable the amina...
• Everyday Utopia: What 2,000 Years of Wild Experiments Can Teach Us About the Good Life AI翻译
  作者：Goldman, Michael A.
  作者单位：California State University System; San Francisco State University