2024

最新文章

• Seafloor primary production in a changing Arctic Ocean AI翻译
  作者：Attard, Karl; Singh, Rakesh Kumar; Gattuso, Jean-Pierre; Dexter, Karen Filbee -; Krause-Jensen, Dorte; Kuhl, Mikael; Archambault, Philippe; Babin, Marcel; Belanger, Simon; Berg, Peter; Glud, Ronnie N.; Hancke, Kasper; Janicke, Stefan; Qin, Jing; Sorensen, Esben B.; Tachon, Foucaut; Wenzhofer, Frank; Ardyna, Mathieu; Kuhi, Michel; Rysgaard, Soren
  作者单位：University of Southern Denmark; University of Southern Denmark; Laval University; University of Quebec; Universite du Quebec a Rimouski; National University of Singapore; Centre National de la Recherche Scientifique (CNRS); Sorbonne Universite; Institute of Marine Research - Norway; University of Western Australia; University of Western Australia; Aarhus University; Aarhus University; University of Copenhagen; Laval University; University of Virginia; Tokyo University of Marine Science & Technology; Norwegian Institute for Water Research (NIVA); University of Southern Denmark; University of Manitoba; Helmholtz Association; Alfred Wegener Institute, Helmholtz Centre for Polar & Marine Research; Max Planck Society
  摘要：Phytoplankton and sea ice algae are traditionally considered to be the main primary producers in the Arctic Ocean. In this Perspective, we explore the importance of benthic primary producers (BPPs) encompassing microalgae, macroalgae, and seagrasses, which represent a poorly quantified source of Arctic marine primary production. Despite scarce observations, models predict that BPPs are widespread, colonizing similar to 3 million km(2) of the extensive Arctic coastal and shelf seas. Using a syn...
• The key role of absolute risk in the disclosure risk assessment of public data releases AI翻译
  作者：Hotz, V. Joseph; Bollinger, Christopher R.; Komarova, Tatiana; Manski, Charles F.; Moffitt, Robert A.; Nekipelov, Denis; Sojourner, Aaron; Spencer, Bruce D.
  作者单位：Duke University; University of Kentucky; University of Manchester; Northwestern University; Johns Hopkins University; University of Virginia; W.E. Upjohn Institute for Employment Research; Northwestern University
• Pervasive mimicry in flight behavior among aposematic butterflies AI翻译
  作者：Page, Edward; Queste, Lucie M.; Rosser, Neil; Salazar, Patricio A.; Nadeau, Nicola J.; Mallet, James; Srygley, Robert B.; McMillan, W. Owen; Dasmahapatra, Kanchon K.
  作者单位：University of York - UK; University of Munich; Harvard University; University of Sheffield; Wellcome Trust Sanger Institute; Smithsonian Institution; Smithsonian Tropical Research Institute; United States Department of Agriculture (USDA)
  摘要：Flight was a key innovation in the adaptive radiation of insects. However, it is a complex trait influenced by a large number of interacting biotic and abiotic factors, making it difficult to unravel the evolutionary drivers. We investigate flight patterns in neotropical heliconiine butterflies, well known for mimicry of their aposematic wing color patterns. We quantify the flight patterns (wing beat frequency and wing angles) of 351 individuals representing 29 heliconiine and 9 ithomiine spec...
• 撤稿声明: Endothelial expression of hypoxia-inducible factor 1 protects the murine heart and aorta from pressure overload by suppression of TGF-β signaling (Retraction of Vol 109, Pg E841, 2012) AI翻译
  作者：Steenbergen, Charles; Dietz, Harry C.; Semenza, Gregg L.
• cAMP binding to closed pacemaker ion channels is cooperative AI翻译
  作者：Kuschke, Stefan; Thon, Susanne; Sattler, Christian; Schwabe, Tina; Benndorf, Klaus; Schmauder, Ralf
  作者单位：Friedrich Schiller University of Jena
  摘要：The cooperative action of the subunits in oligomeric receptors enables fine- tuning of receptor activation, as demonstrated for the regulation of voltage- activated HCN pacemaker ion channels by relating cAMP binding to channel activation in ensemble signals. HCN channels generate electric rhythmicity in specialized brain neurons and cardiomyocytes. There is conflicting evidence on whether binding cooperativity does exist independent of channel activation or not, as recently reported for deter...
• White Americans' preference for Black people in advertising has increased in the past 66 years: A meta-analysis AI翻译
  作者：Lenk, Julia Diana; Hartmann, Jochen; Sattler, Henrik
  作者单位：University of Hamburg; Technical University of Munich
  摘要：This study investigates Black and White consumers' preferences for Black versus White people in United States advertising contexts over 66 y, from 1956 until 2022, a time in which the United States has experienced significant ethno-racial diversification. Examining Black and White consumers' reactions to visual advertising over more than half a century offers a unique and dynamic view of interracial preferences. Mass advertising reaches an audience of billions and can shape people's attitudes ...
• Understanding the ant's unique biting system can improve surgical needle holders AI翻译
  作者：Wipfler, Benjamin; Hoepfner, Ole; Viebahn, Felix; Weihmann, Tom; Rieg, Frank; Engelmann, Carsten
  作者单位：University of Bayreuth; University of Bayreuth; University of Rostock
  摘要：Mechanical grasping and holding devices depend upon a firm and controlled grip. The possibility to improve this gripping performance is severely limited by the need for miniaturization in many applications, such as robotics, microassembly, or surgery. In this paper, we show how this gripping can be improved in one application (the endoscopic needle holder) by understanding and imitating the design principles that evolution has selected to make the mandibles of an ant a powerful natural grippin...
• A neural pathway for social modulation of spontaneous locomotor activity (SoMo- SLA) in Drosophila AI翻译
  作者：Zhao, Huan; Jiang, Xinyu; Ma, Mingze; Xing, Limin; Ji, Xiaoxiao; Pan, Yufeng; Luo, Liqun
  作者单位：Southeast University - China; Nantong University
  摘要：Social enrichment or social isolation affects a range of innate behaviors, such as sex, aggression, and sleep, but whether there is a shared mechanism is not clear. Here, we report a neural mechanism underlying social modulation of spontaneous locomotor activity (SoMo-SLA), an internal- driven behavior indicative of internal states. We find that social enrichment specifically reduces spontaneous locomotor activity in male flies. We identify neuropeptides Diuretic hormone 44 (DH44) and Tachykin...
• The GATA transcriptional program dictates cell fate equilibrium to establish the maternal-fetal exchange interface and fetal development AI翻译
  作者：Ghosh, Ananya; Kumar, Rajnish; Kumar, Ram P.; Ray, Soma; Saha, Abhik; Roy, Namrata; Dasgupta, Purbasa; Marsh, Courtney; Paul, Soumen
  作者单位：University of Kansas; University of Kansas Medical Center; University of Kansas; University of Kansas Medical Center; University of Kansas; University of Kansas Medical Center; University of California System; University of California San Francisco
  摘要：The placenta establishes a maternal-fetal exchange interface to transport nutrients and gases between the mother and the fetus. Establishment of this exchange interface relies on the development of multinucleated syncytiotrophoblasts (SynT) from trophoblast progenitors, and defect in SynT development often leads to pregnancy failure and impaired embryonic development. Here, we show that mouse embryos with conditional deletion of transcription factors GATA2 and GATA3 in labyrinth trophoblast pr...
• Structure and function of the Si3 insertion integrated into the trigger loop/helix of cyanobacterial RNA polymerase AI翻译
  作者：Qayyum, M. Zuhaib; Imashimizu, Masahiko; Leanca, Miron; Vishwakarma, Rishi K.; Riaz-Bradley, Amber; Yuzenkova, Yulia; Murakami, Katsuhiko S.
  作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; National Institute of Advanced Industrial Science & Technology (AIST); Newcastle University - UK; St Jude Children's Research Hospital
  摘要：Cyanobacteria and evolutionarily related chloroplasts of algae and plants possess unique RNA polymerases (RNAPs) with characteristics that distinguish them from canonical bacterial RNAPs. The largest subunit of cyanobacterial RNAP (cyRNAP) is divided into two polypeptides, beta ' 1 and beta ' 2, and contains the largest known lineage- specific insertion domain, Si3, located in the middle of the trigger loop and spanning approximately half of the beta ' 2 subunit. In this study, we present the ...