Science

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• Circular 3D printing of high-performance photopolymers through dissociative network design AI翻译
  作者：Yang, Bo; Ni, Tiantian; Wu, Jingjun; Fang, Zizheng; Yang, Kexuan; He, Ben; Pu, Xingqun; Chen, Guancong; Ni, Chujun; Chen, Di; Zhao, Qian; Li, Wei; Li, Sujing; Li, Hao; Zheng, Ning; Xie, Tao
  作者单位：Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University; Zhejiang University
  摘要：One approach for closed-loop plastics recycling relies on reverting polymers back into monomers because one can then make new plastics without loss of properties. This depolymerization requirement restricts the molecular design to making polymers with high mechanical performance. We report a three-dimensional (3D) printing chemistry through stepwise photopolymerization by forming dithioacetal bonds. The polymerized network can be transformed back into a photoreactive oligomer by dissociation o...
• TRUMP ADMINISTRATION Health agencies reeling as leaders, staff slashed AI翻译
  作者：Kaiser, Jocelyn
• Reformation by light AI翻译
  作者：Lopez de Pariza, Xabier; Sardon, Haritz
  作者单位：University of Basque Country; POLYMAT; University of Basque Country
• A male Denisovan mandible from Pleistocene Taiwan AI翻译
  作者：Tsutaya, Takumi; Sawafuji, Rikai; Taurozzi, Alberto J.; Fagernaes, Zandra; Patramanis, Ioannis; Troche, Gaudry; Mackie, Meaghan; Gakuhari, Takashi; Oota, Hiroki; Tsai, Cheng-Hsiu; Olsen, Jesper V.; Kaifu, Yousuke; Chang, Chun-Hsiang; Cappellini, Enrico; Welker, Frido
  作者单位：University of Copenhagen; Graduate University for Advanced Studies - Japan; Kyushu University; University of Copenhagen; University College Dublin; University of Turin; Kitasato University; Kanazawa University; Kanazawa University; University of Tokyo; National Taiwan University; National Taiwan University; National Museum of Nature and Science; University of Tokyo; Tunghai University
  摘要：Denisovans are an extinct hominin group defined by ancient genomes of Middle to Late Pleistocene fossils from southern Siberia. Although genomic evidence suggests their widespread distribution throughout eastern Asia and possibly Oceania, so far only a few fossils from the Altai and Tibet are confidently identified molecularly as Denisovan. We identified a hominin mandible (Penghu 1) from Taiwan (10,000 to 70,000 years ago or 130,000 to 190,000 years ago) as belonging to a male Denisovan by ap...
• Bots skew social media metrics AI翻译
  作者：Servick, Kelly
• The Sexual Evolution: How 500 Million Years of Sex, Gender, and Mating Shape Modern Relationships AI翻译
  作者：Garcia, Justin R.
  作者单位：Indiana University System; Indiana University Bloomington
• Fixing the science of digital technology harms AI翻译
  作者：Orben, Amy; Matias, J. Nathan
  作者单位：University of Cambridge; Cornell University
• Implementing equitable wildfire response plans AI翻译
  作者：Xu, Junxiang; Nair, Divya Jayakumar; Waller, S. Travis
  作者单位：University of New South Wales Sydney; Technische Universitat Dresden
• Closing the gap in the neutrino mass AI翻译
  作者：Gastaldo, Loredana
  作者单位：Ruprecht Karls University Heidelberg
• A neuroimmune circuit mediates cancer cachexia-associated apathy AI翻译
  作者：Zhu, Xiaoyue Aelita; Starosta, Sarah; Ferrer, Miriam; Hou, Junxiao; Chevy, Quentin; Lucantonio, Federica; Munoz-Castaneda, Rodrigo; Zhang, Fengrui; Zang, Kaikai; Zhao, Xiang; Fiocchi, Francesca R.; Bergstrom, Mason; Siebels, Aubrey A.; Upin, Thomas; Wulf, Michael; Evans, Sarah; Kravitz, Alexxai V.; Osten, Pavel; Janowitz, Tobias; Pignatelli, Marco; Kepecs, Adam
  作者单位：Washington University (WUSTL); Washington University (WUSTL); Cold Spring Harbor Laboratory; Washington University (WUSTL); Washington University (WUSTL); Washington University (WUSTL)
  摘要：Cachexia, a severe wasting syndrome associated with inflammatory conditions, often leads to multiorgan failure and death. Patients with cachexia experience extreme fatigue, apathy, and clinical depression, yet the biological mechanisms underlying these behavioral symptoms and their relationship to the disease remain unclear. In a mouse cancer model, cachexia specifically induced increased effort-sensitivity, apathy-like symptoms through a cytokine-sensing brainstem-to-basal ganglia circuit. Th...