Science

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• Coherent evolution of superexchange interaction in seconds-long optical clock spectroscopy AI翻译
  作者：Milner, William R.; Lannig, Stefan; Mamaev, Mikhail; Yan, Lingfeng; Chu, Anjun; Lewis, Ben; Frankel, Max N.; Hutson, Ross B.; Rey, Ana Maria; Ye, Jun
  作者单位：University of Colorado System; University of Colorado Boulder; National Institute of Standards & Technology (NIST) - USA; University of Colorado System; University of Colorado Boulder
  摘要：Scaling up the performance of atomic clocks requires understanding complex many-body Hamiltonians to ensure meaningful gains for metrological applications. Here we use a degenerate Fermi gas loaded into a three-dimensional optical lattice to study the effect of a tunable Fermi-Hubbard Hamiltonian. The clock laser introduces a spin-orbit coupling spiral phase and breaks the isotropy of superexchange interactions, leading to XXZ-type spin anisotropy. By tuning the lattice confinement and applyin...
• China reveals the foreign scientists who will share its rare lunar samples AI翻译
  作者：Normile, Dennis
• The cellular basis for middle-age spread AI翻译
  作者：Jeon, Yong Geun; Kim, Jae Bum
  作者单位：Seoul National University (SNU)
• Tumor-derived erythropoietin acts as an immunosuppressive switch in cancer immunity AI翻译
  作者：Chiu, David Kung-Chun; Zhang, Xiangyue; Cheng, Bowie Yik-Ling; Liu, Qiang; Hayashi, Kazukuni; Yu, Bo; Lee, Ryan; Zhang, Catherine; An, Xiuli; Rajadas, Jayakumar; Reticker-Flynn, Nathan E.; Rankin, Erinn B.; Engleman, Edgar G.
  作者单位：Stanford University; Stanford University; Stanford University; New York Blood Center; Stanford University; Stanford University; Stanford University; Stanford Cancer Institute
  摘要：Successful cancer immunotherapy requires a patient to mount an effective immune response against tumors; however, many cancers evade the body's immune system. To investigate the basis for treatment failure, we examined spontaneous mouse models of hepatocellular carcinoma (HCC) with either an inflamed T cell-rich or a noninflamed T cell-deprived tumor microenvironment (TME). Our studies reveal that erythropoietin (EPO) secreted by tumor cells determines tumor immunotype. Tumor-derived EPO auton...
• Hawaiian caterpillar patrols spiderwebs camouflaged in insect prey's body parts AI翻译
  作者：Rubinoff, Daniel; San Jose, Michael; Doorenweerd, Camiel
  作者单位：University of Hawaii System; University of Hawaii Manoa
  摘要：Lepidoptera is the most herbivorous of all the insect orders, with predatory caterpillars globally comprising less than 0.13% of the nearly 200,000 moth and butterfly species. Here, we report a species in which caterpillars are carnivorous inhabitants of spider's webs, feeding on the arthropods that they find there. This Hawaiian lineage also boasts an unprecedented and macabre practice of decorating its portable larval home with the body parts of the spider prey it harvests from the web where...
• Ultracool microscopes advance AI翻译
  作者：Servick, Kelly
• Distinct adipose progenitor cells emerging with age drive active adipogenesis AI翻译
  作者：Wang, Guan; Li, Gaoyan; Song, Anying; Zhao, Yutian; Yu, Jiayu; Wang, Yifan; Dai, Wenting; Salas, Martha; Qin, Hanjun; Medrano, Leonard; Dow, Joan; Li, Aimin; Armstrong, Brian; Fueger, Patrick T.; Yu, Hua; Zhu, Yi; Shao, Mengle; Wu, Xiwei; Jiang, Lei; Campisi, Judith; Yang, Xia; Wang, Qiong A.
  作者单位：City of Hope; University of California System; University of California Los Angeles; City of Hope; City of Hope; City of Hope; City of Hope; City of Hope; City of Hope; Beckman Research Institute of City of Hope; Baylor College of Medicine; Chinese Academy of Sciences; Shanghai Institute of Immunity and Infection, CAS; Buck Institute for Research on Aging; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles
  摘要：Starting at middle age, adults often suffer from visceral adiposity and associated adverse metabolic disorders. Lineage tracing in mice revealed that adipose progenitor cells (APCs) in visceral fat undergo extensive adipogenesis during middle age. Thus, despite the low turnover rate of adipocytes in young adults, adipogenesis is unlocked during middle age. Transplantations quantitatively showed that APCs in middle-aged mice exhibited high adipogenic capacity cell-autonomously. Single-cell RNA ...
• Sex Is a Spectrum: The Biological Limits of the Binary AI翻译
  作者：Ah-King, Malin
  作者单位：Orebro University; Orebro University
• Reimagining silicone's life cycle AI翻译
  作者：Ghosh, Koushik
  作者单位：United States Department of Energy (DOE); Sandia National Laboratories
• Partisan disparities in the use of science in policy AI翻译
  作者：Furnas, Alexander C.; LaPira, Timothy M.; Wang, Dashun
  作者单位：Northwestern University; Northwestern University; Northwestern University; Northwestern University; James Madison University; Northwestern University