8053期

最新文章

• Eye problems cloud NASA's vision of Mars AI翻译
  作者：Savage, Neil
• Orbital hybridization in graphene-based artificial atoms AI翻译
  作者：Mao, Yue; Ren, Hui-Ying; Zhou, Xiao-Feng; Sheng, Hao; Xiao, Yun-Hao; Zhuang, Yu-Chen; Ren, Ya-Ning; He, Lin; Sun, Qing-Feng
  作者单位：Peking University; Beijing Normal University; Hefei National Laboratory
  摘要：Intra-atomic orbital hybridization and interatomic bond formation are the two fundamental processes when real atoms are condensed to form matter1,2. Artificial atoms mimic real atoms by demonstrating discrete energy levels attributable to quantum confinement3, 4, 5, 6, 7-8. As such, they offer a solid-state analogue for simulating intra-atomic orbital hybridization and interatomic bond formation. Signatures of interatomic bond formation have been extensively observed in various artificial atom...
• Fetal hepatocytes protect the HSPC genome via fetuin-A ( vol 637,pg 402, 2025) AI翻译
  作者：Guo, Xiao-Lin; Wang, Yi-Ding; Liu, Yan-Jun; Chu, Lei; Zhu, Hua; Hu, Ye; Wu, Ren-Yan; Xie, Hong-Yu; Yu, Juan; Li, Shui-Ping; Xiong, Chao-Yang; Li, Ruo-Yan; Ke, Fang; Chen, Lei; Chen, Guo-Qiang; Chen, Liang; Bai, Fan; Enver, Tariq; Li, Guo-Hong; Li, Huai-Fang; Hong, Deng-Li
• Contrasting drought sensitivity of Eurasian and North American grasslands AI翻译
  作者：Yu, Qiang; Xu, Chong; Wu, Honghui; Ke, Yuguang; Zuo, Xiaoan; Luo, Wentao; Ren, Haiyan; Gu, Qian; Wang, Hongqiang; Ma, Wang; Knapp, Alan K.; Collins, Scott L.; Rudgers, Jennifer A.; Luo, Yiqi; Hautier, Yann; Wang, Chengjie; Wang, Zhengwen; Jiang, Yong; Han, Guodong; Gao, Yingzhi; He, Nianpeng; Zhu, Juntao; Dong, Shikui; Xin, Xiaoping; Yu, Guirui; Smith, Melinda D.; Li, Linghao; Han, Xingguo
  作者单位：Beijing Forestry University; Beijing Forestry University; Chinese Academy of Agricultural Sciences; Institute of Agricultural Resources & Regional Planning, CAAS; Chinese Academy of Agricultural Sciences; Institute of Agricultural Resources & Regional Planning, CAAS; Chinese Academy of Agricultural Sciences; Institute of Agricultural Resources & Regional Planning, CAAS; Chinese Academy of Sciences; Chinese Academy of Sciences; Shenyang Institute of Applied Ecology, CAS; Nanjing Agricultural University; Colorado State University System; Colorado State University Fort Collins; University of New Mexico; Cornell University; Utrecht University; Inner Mongolia Agricultural University; Hebei University; Northeast Normal University - China; Xinjiang Agricultural University; Northeast Forestry University - China; Chinese Academy of Sciences; Institute of Geographic Sciences & Natural Resources Research, CAS; Chinese Academy of Sciences; Institute of Botany, CAS
  摘要：Extreme droughts generally decrease productivity in grassland ecosystems1, 2-3 with negative consequences for nature's contribution to people4, 5, 6-7. The extent to which this negative effect varies among grassland types and over time in response to multi-year extreme drought remains unclear. Here, using a coordinated distributed experiment that simulated four years of growing-season drought (around 66% rainfall reduction), we compared drought sensitivity within and among six representative g...
• An assault on science anywhere is an assault on science everywhere AI翻译
  作者：[Anonymous]
• TOADS HIT THE ROAD AND SHOW OFF THEIR NAVIGATIONAL SKILLS AI翻译
  作者：[Anonymous]
• Limited impact of Salmonella stress and persisters on antibiotic clearance AI翻译
  作者：Fanous, Joseph; Claudi, Beatrice; Tripathi, Vishwachi; Li, Jiagui; Goormaghtigh, Frederic; Bumann, Dirk
  作者单位：University of Basel
  摘要：Antimicrobial compounds are essential for controlling bacterial infections. Stress-induced bacterial tolerance and persisters can undermine antimicrobial activities under laboratory conditions, but their quantitative effects under physiological conditions remain unclear1,2. Here we determined constraints on clearance of Salmonella by antimicrobials in infected mice and tissue-mimicking chemostats. The antibiotics enrofloxacin and ceftriaxone exhibited poor anti-Salmonella activity under both c...
• A genomic history of the North Pontic Region from the Neolithic to the Bronze Age AI翻译
  作者：Nikitin, Alexey G.; Lazaridis, Iosif; Patterson, Nick; Ivanova, Svitlana; Videiko, Mykhailo; Dergachev, Valentin; Kotova, Nadiia; Lillie, Malcolm; Potekhina, Inna; Krenz-Niedbala, Marta; Lukasik, Sylwia; Makhortykh, Serhij; Renson, Virginie; Shephard, Henry; Sirbu, Gennadie; Svyryd, Sofiia; Tkachuk, Taras; Wlodarczak, Piotr; Callan, Kim; Curtis, Elizabeth; Harney, Eadaoin; Iliev, Lora; Kearns, Aisling; Lawson, Ann Marie; Michel, Megan; Mah, Matthew; Micco, Adam; Oppenheimer, Jonas; Qiu, Lijun; Workman, J. Noah; Zalzala, Fatma; Mallick, Swapan; Rohland, Nadin; Reich, David
  作者单位：Grand Valley State University; Harvard University; Harvard University; Harvard Medical School; Harvard University; Massachusetts Institute of Technology (MIT); Broad Institute; National Academy of Sciences Ukraine; Institute of Archaeology, National Academy of Sciences of Ukraine; Ministry of Education & Science of Ukraine; Borys Grinchenko Kyiv Metropolitan University; Academy of Sciences of Moldova; Adam Mickiewicz University; University of Missouri System; University of Missouri Columbia; Academy of Sciences of Moldova; Polish Academy of Sciences; Institute of Archaeology & Ethnology of the Polish Academy of Sciences; Harvard University; Harvard Medical School; Howard Hughes Medical Institute
  摘要：The North Pontic Region was the meeting point of the farmers of Old Europe and the foragers and pastoralists of the Eurasian steppe1,2, and the source of migrations deep into Europe3, 4-5. Here we report genome-wide data from 81 prehistoric North Pontic individuals to understand the genetic makeup of its people. North Pontic foragers had ancestry from Balkan and Eastern hunter-gatherers6 as well as European farmers and, occasionally, Caucasus hunter-gatherers. During the Eneolithic period, a w...
• Fine-tuning gibberellin improves rice alkali-thermal tolerance and yield AI翻译
  作者：Guo, Shuang-Qin; Chen, Ya-Xin; Ju, Ya-Lin; Pan, Chen-Yang; Shan, Jun-Xiang; Ye, Wang-Wei; Dong, Nai-Qian; Kan, Yi; Yang, Yi-Bing; Zhao, Huai-Yu; Yu, Hong-Xiao; Lu, Zi-Qi; Lei, Jie-Jie; Liao, Ben; Mu, Xiao-Rui; Cao, Ying-Jie; Guo, Liangxing; Gao, Jin; Zhou, Ji-Fu; Yang, Kai-Yang; Lin, Hong-Xuan; Lin, Youshun
  作者单位：Chinese Academy of Sciences; Center for Excellence in Molecular Plant Sciences, CAS; Shanghai Jiao Tong University; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Guangdong Laboratory for Lingnan Modern Agriculture; ShanghaiTech University
  摘要：Soil alkalinization and global warming are predicted to pose major challenges to agriculture in the future, as they continue to accelerate, markedly reducing global arable land and crop yields1,2. Therefore, strategies for future agriculture are needed to further improve globally cultivated, relatively high-yielding Green Revolution varieties (GRVs) derived from the SEMIDWARF 1 (SD1) gene3,4. Here we propose that precise regulation of the phytohormone gibberellin (GA) to optimal levels is the ...
• SARS-CoV-2 evolution on a dynamic immune landscape AI翻译
  作者：Raharinirina, N. Alexia; Gubela, Nils; Boernigen, Daniela; Smith, Maureen Rebecca; Oh, Djin-Ye; Budt, Matthias; Mache, Christin; Schillings, Claudia; Fuchs, Stephan; Duerrwald, Ralf; Wolff, Thorsten; Hoelzer, Martin; Paraskevopoulou, Sofia; von Kleist, Max
  作者单位：Free University of Berlin; Max Planck Society; Robert Koch Institute; Robert Koch Institute; Robert Koch Institute
  摘要：Since the onset of the pandemic, many SARS-CoV-2 variants have emerged, exhibiting substantial evolution in the virus' spike protein1, the main target of neutralizing antibodies2. A plausible hypothesis proposes that the virus evolves to evade antibody-mediated neutralization (vaccine- or infection-induced) to maximize its ability to infect an immunologically experienced population1,3. Because viral infection induces neutralizing antibodies, viral evolution may thus navigate on a dynamic immun...