2024

最新文章

• Highly selective photoelectrochemical CO2 reduction by crystal phase- modulated nanocrystals without parasitic absorption AI翻译
  作者：Wang, Qingzhen; Liu, Bin; Wang, Shujie; Zhang, Peng; Wang, Tuo; Gong, Jinlong
  作者单位：Tianjin University; Collaborative Innovation Center of Chemical Science & Engineering Tianjin; Nankai University; Haihe Laboratory of Sustainable Chemical Transformations; Tianjin University; TJU-NUS Joint Institute
  摘要：Photoelectrochemical (PEC) carbon dioxide (CO2) reduction (CO2R) holds the potential to reduce the costs of solar fuel production by integrating CO2 utilization and light harvesting within one integrated device. However, the CO2R selectivity on the photocathode is limited by the lack of catalytic active sites and competition with the hydrogen evolution reaction. On the other hand, serious parasitic light absorption occurs on the front- side-illuminated photocathode due to the poor light transm...
• Racial differences in parent response to COVID schooling policies AI翻译
  作者：Baum, Micah Y.; Jacob, Brian A.
  作者单位：University of Michigan System; University of Michigan; National Bureau of Economic Research
  摘要：This paper examines whether school COVID-19 policies influenced enrollment differently by student age and race/ethnicity. Unlike much prior research, we i) analyze enrollments for virtually the entire U.S. public school population for both the 2020- 2021 and 2021-2022 school years, ii) compare enrollment trends within districts in order to isolate subgroup heterogeneity from district characteristics, and iii) account for district selection into preferred learning modes. Analyzing data on over ...
• Linking vertical movements of large pelagic predators with distribution patterns of biomass in the open ocean (vol 120, e2306357, 2023) AI翻译
  作者：Braun, Camrin D.; Della Penna, Alice; Arostegui, Martin C.; Afonso, Pedro; Berumen, Michael L.; Block, Barbara A.; Brown, Craig A.; Fontes, Jorge; Furtado, Miguel; Gallagher, Austin J.; Gaube, Peter; Golet, Walter J.; Kneebone, Jeff; Macena, Bruno C. L.; Muciente, Gonzalo; Orbesen, Eric S.; Queiroz, Nuno; Shea, Brendan D.; Schratwieser, Jason; Sims, David W.; Skomal, Gregory B.; Snodgrass, Derke; Thorrold, Simon R.
• Seagrass ecosystems reduce disease risk and economic loss in marine farming production AI翻译
  作者：Fiorenza, Evan A.; Abu, Nur; Feeney, William E.; Limbong, Steven R.; Freimark, Claire B.; Jompa, Jamaluddin; Harvell, C. Drew; Lamb, Joleah B.
  作者单位：University of California System; University of California Irvine; Universitas Muhammadiyah Sorong; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC - Estacion Biologica de Donana (EBD); Universitas Hasanuddin; Cornell University
  摘要：Seaweed farming comprises over half of global coastal and marine aquaculture production by mass; however, the future of the industry is increasingly threatened by disease outbreaks. Nature-based solutions provided by enhancing functions of coinciding species or ecosystems offer an opportunity to increase yields by reducing disease outbreaks while conserving biodiversity. Seagrass ecosystems can reduce the abundance of marine bacterial pathogens, although it remains unknown whether this service...
• Internal feedback circuits among MEX-5, MEX-6, and PLK-1 maintain faithful patterning in the Caenorhabditis elegans embryo AI翻译
  作者：Vaudano, Alexandre Pierre; Schwager, Francoise; Gotta, Monica; Barbieri, Sofia
  作者单位：University of Geneva
  摘要：Proteins become asymmetrically distributed in the one- cell Caenorhabditis elegans embryo thanks to reaction-diffusion mechanisms that are often entangled in complex feedback loops. Cortical polarity drives the enrichment of the RNA- binding proteins MEX-5 and MEX-6 in the anterior cytoplasm through concentration gradients. MEX-5 and MEX-6 promote the patterning of other cytoplasmic factors, including that of the anteriorly enriched mitotic polo- like kinase PLK-1, but also contribute to prope...
• A minimal complex of KHNYN and zinc- finger antiviral protein binds and degrades single- stranded RNA AI翻译
  作者：Yeoh, Zoe C.; Meagher, Jennifer L.; Kang, Chia-Yu; Bieniasz, Paul D.; Smith, Janet L.; Ohi, Melanie D.
  作者单位：University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; Rockefeller University; Howard Hughes Medical Institute; University of Michigan System; University of Michigan
  摘要：Detecting viral infection is a key role of the innate immune system. The genomes of some RNA viruses have a high CpG dinucleotide content relative to most vertebrate cell RNAs, making CpGs a molecular marker of infection. The human zinc- finger antiviral protein (ZAP) recognizes CpG, mediates clearance of the foreign CpG-rich RNA, and causes attenuation of CpG-rich RNA viruses. While ZAP binds RNA, it lacks enzymatic activity that might be responsible for RNA degradation and thus requires inte...
• Early human collective practices and symbolism in the Early Upper Paleolithic of Southwest Asia AI翻译
  作者：Barzilai, Omry; Marder, Ofer; Tejero, Jose- Miguel; Ayalon, Avner; Matthews, Miryam Bar-; Abulafia, Talia; Lavi, Ron; Goder-Goldberger, Mae; Shemer, Maayan; Edeltin, Lotan; Wiegmann, Alexander; Frumkin, Amos; Karasik, Avshalom; Yasur, Gal; Yeshurun, Reuven; Zohar, Irit; Berna, Francesco; Hans, Mark; Goldberg, Jerold S.; Mcdermott, Yvonne; Spurlock, Linda; Pokhojaev, Ariel; Habashi, Waseem; May, Hila; Sarig, Rachel; Hershkovitz, Israel
  作者单位：University of Haifa; Ben-Gurion University of the Negev; University of Barcelona; University of Vienna; Geological Survey Israel; Hebrew University of Jerusalem; University of Haifa; Tel Aviv University; Oranim Academic College of Education; Simon Fraser University; University of Siena; University System of Ohio; Case Western Reserve University; University System of Ohio; Case Western Reserve University; University System of Ohio; Kent State University; Kent State University Salem; Kent State University Kent; Tel Aviv University; Tel Aviv University; Tel Aviv University
  摘要：Identifying communal rituals in the Paleolithic is of scientific importance, as it reflects the expression of collective identity and the maintenance of group cohesion. This study provides evidence indicating the practice of deep cave collective rituals in the Levant during the Early Upper Paleolithic (EUP) period. It is demonstrated that these gatherings occurred within a distinct ritual compound and were centered around an engraved object in the deepest part of Manot Cave, a pivotal EUP site...
• Excimer formation in zinc-phthalocyanine revealed using ultrafast electron diffraction AI翻译
  作者：Hammer, Sebastian; Britt, Tristan L.; Kremeyer, Laurenz; Roedel, Maximilian; Cai, David; Pflaum, Jens; Siwick, Bradley J.
  作者单位：McGill University; McGill University; University of Wurzburg
  摘要：The formation of excited dimer states, so called excimers, is an important phenomenon in many organic molecular semiconductor solid state aggregates. In contrast to Frenkel exciton-polarons, an excimer is long-lived and energetically low-lying due to stabilization resulting from a substantial reorganization of the intermolecular geometry. Here, we show that ultrafast electron diffraction can follow the dynamics of solidstate excimer formation in polycrystalline thin films of a molecular semico...
• Long- term employment and health effects of active labor market programs AI翻译
  作者：Baekgaard, Martin; Nielsen, Soren Albeck; Rosholm, Michael; Svarer, Michael
  作者单位：Aarhus University; Aarhus University
  摘要：Active labor market programs (ALMPs) are widely used to speed up return to work among the unemployed. We examine their long- run effects on employment- and health- related outcomes for different target groups, arguing that ALMPs are associated with heterogeneous effects for different target groups and may even detrimentally influence the mental health for the most disadvantaged groups. To this end, we use evidence from randomized controlled trials conducted in Denmark in 2005-2008, in which tr...
• Opportunities and challenges of plant proteins as functional ingredients for food production AI翻译
  作者：Etzbach, Lara; Gola, Susanne; Kuellmer, Fabian; Acir, Ismail-Hakki; Wohlt, Daria; Ignatzy, Laura Melanie; Bader-Mittermaier, Stephanie; Schweiggert-Weisz, Ute
  作者单位：University of Bonn; Fraunhofer Gesellschaft; Fraunhofer Germany; Fraunhofer Process Engineering & Packaging; Technical University of Munich
  摘要：Consumer interest in meat and dairy alternatives drives demand for plant- based protein ingredients. While soy and gluten dominate the market, there is a trend to explore alternative crops for functional ingredient production. The multitude of ingredients poses challenges for food manufacturers in selecting the right protein. We investigated 61 commercially available protein ingredients from various sources, categorizing them based on their protein content into protein- rich flours (protein co...