6729期

最新文章

• Scientists brace for Trump's second act AI翻译
  作者：Brainard, Jeffrey; Servick, Kelly
• The classroom door AI翻译
  作者：Croft, Catherine
• Trump names AI-focused team as leaders of his science office AI翻译
  作者：Mervis, Jeffrey
  摘要：Michael Kratsios and Lynne Parker, veterans of Trump's first term, come with technology backgrounds
• Earth's clouds are shrinking, boosting global warming AI翻译
  作者：Voosen, Paul
  摘要：Narrowing storm bands may be a surprising and dangerous new feedback of climate change
• Waiting for Robots: The Hired Hands of Automation AI翻译
  作者：Greenbaum, Dov; Gerstein, Mark
  作者单位：Reichman University; Reichman University; Reichman University; Yale University; Yale University; Yale University
• Historic UK medical research units under threat AI翻译
  作者：O'Grady, Cathleen
  摘要：New focus on challenge-led funding may see decades-old institutes close, scientists warn
• US agencies roll out free paper-access policies AI翻译
  作者：Brainard, Jeffrey
• Organic ionic plastic crystals having colossal barocaloric effects for sustainable refrigeration AI翻译
  作者：Piper, Samantha L.; Melag, Leena; Kar, Mega; Sourjah, Azra; Xiao, Xiong; May, Eric F.; Aguey-Zinsou, Kondo-Francois; MacFarlane, Douglas R.; Pringle, Jennifer M.
  作者单位：Deakin University; University of Western Australia; University of Sydney; Monash University; Commonwealth Scientific & Industrial Research Organisation (CSIRO); CSIRO Mineral Resources
  摘要：Barocaloric (BC) materials offer the potential for highly energy-efficient refrigeration by generating heat absorption through the effect of pressure on a solid-solid phase transition. However, very few of the known materials have the required phase transition in the temperature regions necessary for domestic refrigeration or air conditioning. We introduce organic ionic plastic crystals (OIPCs) as a new family of BC materials. OIPCs display subambient transition temperatures, so-called colossa...
• Diversity initiatives under fire AI翻译
  作者：Brainard, Jeffrey; Servick, Kelly
• Sulfenylnitrene-mediated nitrogen-atom insertion for late-stage skeletal editing of N-heterocycles AI翻译
  作者：Ghosh, Bidhan; Kafle, Prakash; Mukherjee, Rishav; Welles, Randall; Herndon, Deacon; Nicholas, Kenneth M.; Shao, Yihan; Sharma, Indrajeet
  作者单位：University of Oklahoma System; University of Oklahoma - Norman
  摘要：Given the prevalence of nitrogen-containing heterocycles in commercial drugs, selectively incorporating a single nitrogen atom is a promising scaffold hopping approach to enhance chemical diversity in drug discovery libraries. We harness the distinct reactivity of sulfenylnitrenes, which insert a single nitrogen atom to transform readily available pyrroles, indoles, and imidazoles into synthetically challenging pyrimidines, quinazolines, and triazines, respectively. Our additive-free method fo...