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作者：Zeng, Li; Yang, Qinghong; Wang, Jianxing; Wang, Xin; Wang, Pengjie; Wang, Shengchun; Lv, Shide; Muhammad, Shabbir; Liu, Yichang; Yi, Hong; Lei, Aiwen
作者单位：Wuhan University; Jiangxi Normal University
摘要：Direct current (DC) electrosynthesis, which has undergone optimization over the past century, plays a pivotal role in a variety of industrial processes. Alternating current (AC) electrosynthesis, characterized by polarity reversal and periodic fluctuations, may be advantageous for multiple chemical reactions, but apparatus, principles, and application scenarios remain underdeveloped. In this work, we introduce a protocol for programmed AC (pAC) electrosynthesis that systematically adjusts curr...
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作者：Voosen, Paul
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作者：Zhang, Jiaoshi; Gong, Xianda; Crosbie, Ewan; Diskin, Glenn; Froyd, Karl; Hall, Samuel; Kupc, Agnieszka; Moore, Richard; Peischl, Jeff; Rollins, Andrew; Schwarz, Joshua; Shook, Michael; Thompson, Chelsea; Ullmann, Kirk; Williamson, Christina; Wisthaler, Armin; Xu, Lu; Ziemba, Luke; Brock, Charles A.; Wang, Jian
作者单位：Washington University (WUSTL); National Aeronautics & Space Administration (NASA); NASA Langley Research Center; Science Systems & Applications Inc; University of Colorado System; University of Colorado Boulder; National Oceanic Atmospheric Admin (NOAA) - USA; National Center Atmospheric Research (NCAR) - USA; University of Vienna; Finnish Meteorological Institute; University of Helsinki; University of Innsbruck; University of Oslo
摘要：New particle formation in the free troposphere is a major source of cloud condensation nuclei globally. The prevailing view is that in the free troposphere, new particles are formed predominantly in convective cloud outflows. We present another mechanism using global observations. We find that during stratospheric air intrusion events, the mixing of descending ozone-rich stratospheric air with more moist free tropospheric background results in elevated hydroxyl radical (OH) concentrations. Suc...
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作者：Rasmussen, Jeppe H.; Stowell, Dan; Briefer, Elodie F.
作者单位：University of Copenhagen; University of Agder; University of Agder; Tilburg University; Naturalis Biodiversity Center
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作者：Shu, Liang; Shi, Xiaoming; Zhang, Xin; Yang, Ziqi; Li, Wei; Ma, Yunpeng; Liu, Yi-Xuan; Liu, Lisha; Cheng, Yue-Yu-Shan; Wei, Liyu; Li, Qian; Huang, Houbing; Zhang, Shujun; Li, Jing-Feng
作者单位：Tsinghua University; Beijing Institute of Technology; University of Science & Technology Beijing; University of Manchester; Nanjing University of Science & Technology; University of Wollongong
摘要：Relaxor ferroelectric (RFE) films are promising energy-storage candidates for miniaturizing high-power electronic systems, which is credited to their high energy density (U-e) and efficiency. However, advancing their U-e beyond 200 joules per cubic centimeter is challenging, limiting their potential for next-generation energy-storage devices. We implemented a partitioning polar-slush strategy in RFEs to push the boundary of U-e. Guided by phase-field simulations, we designed and fabricated hig...
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作者：Rothstein, Mark A.; Zimmerer, Kelly Carty; Andanda, Pamela; Arawi, Thalia; Arzuaga, Fabiana; Chen, Haidan; de Vries, Martine; Dove, Edward S.; Ghaly, Mohammed; Hatanaka, Ryoko; Hendriks, Aart C.; Hernandez, Mireya Castaneda; Ho, Calvin W. L.; Joly, Yann; Krekora-Zajac, Dorota; Lee, Won Bok; Mattsson, Titti; Molnar-Gabor, Fruzsina; Namalwa, Kakai; Nicolas, Pilar; Nielsen, Jane; Nnamuchi, Obiajulu; Otlowski, Margaret; Palmour, Nicole; Rial-Sebbag, Emmanuelle; Siegal, Gil; Wathuta, Jane M.; Zawati, Ma'n H.; Knoppers, Bartha Maria
摘要：Many countries consider long-term implications for society In the context of biomedical research involving human subjects, the review of research proposals by ethics committees in virtually every country has traditionally focused on informed consent and other protections for individuals participating in research ( 1 ). However, the substantial societal implications of modern biomedical research and the globalization of scientific inquiry make it important to understand whether research ethics ...
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作者：Zedaveinyte, Rimante; Meers, Chance; Le, Hoang C.; Mortman, Edan E.; Tang, Stephen; Lampe, George D.; Pesari, Sanjana R.; Gelsinger, Diego R.; Wiegand, Tanner; Sternberg, Samuel H.
作者单位：Columbia University; Columbia University; University of California System; University of California San Diego
摘要：TnpB nucleases represent the evolutionary precursors to CRISPR-Cas12 and are widespread in all domains of life. IS605-family TnpB homologs function as programmable RNA-guided homing endonucleases in bacteria, driving transposon maintenance through DNA double-strand break-stimulated homologous recombination. In this work, we uncovered molecular mechanisms of the transposition life cycle of IS607-family elements that, notably, also encode group I introns. We identified specific features for a ca...
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作者：Li, Albert W.
作者单位：University of California System; University of California Irvine
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作者：Prather, Michael J.; Zhu, Lei
作者单位：University of California System; University of California Irvine; State University of New York (SUNY) System; Wadsworth Center; State University of New York (SUNY) System; University at Albany, SUNY
摘要：The decay of methyl chloroform, a banned ozone-depleting substance, has provided a clear observational metric of mean tropospheric hydroxyl radical (OH) abundance. Almost all current global chemistry models calculate about 15% too much OH and thus too rapid methane loss. Methane is a short-lived climate forcer, critical to achieving global warming targets, and this error affects our model projections of climate change. New observations of water vapor absorption in the ultraviolet region (290 t...
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作者：Quaglia, Sofia
摘要：Scientists allege irregularities in papers on how honey bees gauge distance
