6799期

最新文章

• A molecular pathway to corrosion-resistant printable copper AI翻译
  作者：Zhang, Jun; Zhang, Qiubo; Feng, Qikun; Sun, Xiao; Xu, Lin; Wang, Zhongxuan; Zheng, Xueying; Yang, Linlin; Khuje, Saurabh; Zheng, Haimei; Hu, Liangbing; Ren, Shenqiang
  作者单位：University System of Maryland; University of Maryland College Park; United States Department of Energy (DOE); Lawrence Berkeley National Laboratory; University of California System; University of California Berkeley; University of Koblenz; Yale University; Institut de Recerca en Energia de Catalunya (IREC); University of Barcelona
  摘要：Copper's exceptional electrical and thermal conductivities make it essential for electronics and energy systems. However, oxidation and corrosion limit its long-term reliability, and existing protection strategies often involve high-temperature or multistep processing. We report a molecularly reactive strategy that converts copper precursors to metallic copper at <150 degrees C, while generating an ultrathin carbonaceous and copper(I) surface passivation. Catechol-based ligands mediate copper ...
• Ancient ice core could help explain why the ice ages switched rhythm AI翻译
  作者：Cutts, Elise
• Decoding collective dynamics and complexity in nanoparticle assemblies using graph theory AI翻译
  作者：Hallstrom, Jonas; Pan, Puquan; Sia, Jayson; Bae, Sangwok; Qian, Dingwen; Qian, Chang; Liu, Sindy; Yao, Lehan; Truskett, Thomas M.; Milliron, Delia J.; Chen, Qian; Mao, Xiaoming; Bogdan, Paul; Kotov, Nicholas A.
  作者单位：University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Illinois System; University of Illinois Urbana-Champaign; University of Southern California; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Texas System; University of Texas Austin
  摘要：Being intermediate in scale between molecules and colloids, nanoparticles combine characteristics of both. The structure of their self-assembled states combining order and disorder is difficult to quantify using traditional symmetry-based descriptors. Here, we applied graph theory (GT) to analyze assemblies of 400 to 10,000 nanoparticles across three material systems. We show that GT metrics, augmented Forman-Ricci curvature (AFRC) and Ollivier-Ricci curvature (ORC), capture local and global s...
• Sharp views unlocked from JWST with a 'keyhole' trick AI翻译
  作者：Clery, Daniel
• Genetic variability of SARS-CoV-2 in wastewater and associations with community transmission AI翻译
  作者：Hill, Dustin T.; Schulman, Rafael; Caldas, Ian Vasconcellos; Dunham, Christopher; Zhu, Yifan; Lamson, Daryl; Rickerman, Lindsey; George, Kirsten St.; Ahmed-Braimah, Yasir; Green, Hyatt; Kmush, Brittany L.; Middleton, Frank; Larsen, David A.
  作者单位：State University of New York (SUNY) System; State University of New York (SUNY) College of Environmental Science & Forestry; SUNY Delhi; SUNY Community College; State University of New York (SUNY) System; SUNY Upstate Medical University; Syracuse University; Syracuse University; Wadsworth Center; State University of New York (SUNY) System; State University of New York (SUNY) System; University at Albany, SUNY
  摘要：Sequencing genetic material from community wastewater facilitates the study of virus diversity. Diversity can be estimated using the variation in nucleotides and number of variants identified, increasing the information obtained from one wastewater sample. Using 12,290 wastewater sequences of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), we found that virus diversity is a strong indicator of disease transmission, with a significant correlation between average weekly diversity a...
• Cruise ship outbreak spotlights a little-studied hantavirus AI翻译
  作者：Kupferschmidt, Kai
• An entropy-regulating molecular lock stabilizes formamidinium lead halide perovskite AI翻译
  作者：Miao, Tianyin; Liu, Sanwan; Lei, Xia; Zhang, Yong; Li, Wenpei; Zhou, Qisen; Wang, Jianan; Emelianov, Nikita A.; Ozerova, Victoria V.; Bolshakova, Valeria S.; Wang, Wenqiang; Zhou, Zheng; Zhu, Zhongjie; Lu, Lanlu; Chen, Zhenhua; Ma, Jingyuan; Xu, Erxiang; Wang, Luyao; Li, Yunfei; Tan, Zhengtian; Zheng, Shijie; Liu, Guilin; Guo, Lianbo; Li, Jingbai; Shen, Yang; Troshin, Pavel A.; Aldoshin, Sergey M.; Liu, Zonghao; Park, Nam-Gyu; Chen, Wei
  作者单位：Huazhong University of Science & Technology; Huazhong University of Science & Technology; Sungkyunkwan University (SKKU); Sungkyunkwan University (SKKU); Shenzhen Polytechnic University; Southern University of Science & Technology; Hong Kong University of Science & Technology (Guangzhou); Russian Academy of Sciences; Chinese Academy of Sciences; Shanghai Advanced Research Institute, CAS; Chinese Academy of Sciences; Shanghai Advanced Research Institute, CAS; Tsinghua University; Xiamen University; Jiangnan University; Sungkyunkwan University (SKKU)
  摘要：A critical limitation of formamidinium lead iodide (FAPbI(3)) perovskite solar cells (PSCs) lies in the intrinsic instability of the ionic-covalent Pb-I octahedral lattice, relative to the unfavorable hexagonal delta-phase under operating conditions. We report an entropy-regulating molecular-lock strategy using 1-pyridin-3-ylmethyl-piperazine hydrochloride (3-PMPCl). Strong interactions between the perovskite lattice surface and 3-PMPCl modulate the rotational freedom of organic cations and su...
• Predictable seismic cycles result from structural rupture barriers on oceanic transform faults AI翻译
  作者：Gong, Jianhua; Fan, Wenyuan; McGuire, Jeffrey J.; Behn, Mark D.; Warren, Jessica M.; Roland, Emily; Boettcher, Margaret S.; Collins, John A.; Liu, Yajing; German, Christopher R.
  作者单位：Indiana University System; Indiana University Bloomington; University of California System; University of California San Diego; Scripps Institution of Oceanography; United States Department of the Interior; United States Geological Survey; Woods Hole Oceanographic Institution; Boston College; University of Delaware; Western Washington University; University System Of New Hampshire; University of New Hampshire; McGill University
  摘要：Earthquakes of magnitude (M) >5.5 on oceanic transform faults (OTFs) repeatedly rupture the same locked patches, sometimes quasiperiodically. These patches are separated by barriers that halt earthquake propagation and slip mostly aseismically. However, the physical processes governing this systematic behavior remain unclear. We analyzed two barriers along the Gofar transform fault that have arrested similar to 15 M6 earthquakes over the past three decades. Ocean bottom seismometer data indica...
• Raf-like protein kinase heterocomplexes directly regulate the plant plasma membrane H+-ATPase AI翻译
  作者：Takase, Hinano; Nagano, Aina; Yamauchi, Shota; Hayashi, Yuki; Takahashi, Koji; Kamiyama, Yoshiaki; Yamashita, Kota; Katagiri, Sotaro; Li, Yangdan; Fuji, Saashia; Tahara, Kyoka; Noguchi, Minoru; Kawaguchi, Yoshiki; Adachi, Shunsuke; Kodama, Yutaka; Nishihama, Ryuichi; Takemiya, Atsushi; Kinoshita, Toshinori; Umezawa, Taishi
  作者单位：Tokyo University of Agriculture & Technology; Tokyo University of Science; Nagoya University; Nagoya University; Yamaguchi University; Utsunomiya University; Tokyo University of Agriculture & Technology; Tokyo University of Science
  摘要：The plasma membrane proton pump [PM H+-adenosine triphosphatase (PM H+-ATPase)] is essential in plants. C-terminal phosphorylation events regulate proton pump activity, such as Thr(881) phosphorylation in Arabidopsis AHA1. We discovered a sequential protein phosphorylation pathway in which two distinct types of Raf-like protein kinases, C5-Raf and C7-Raf, form a heterocomplex that phosphorylates Thr(881) to activate PM H+-ATPases. This regulatory system is highly conserved across lineages from...
• From wastewater analysis to public health action AI翻译
  作者：Lessler, Justin; Christensen, Ariel
  作者单位：University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine; Johns Hopkins University; Johns Hopkins Bloomberg School of Public Health