Near-atomic-scale observation of grain boundaries in a layer-stacked two-dimensional polymer.

abstract：:Several forms of hair loss in humans are characterized by the inability of hair follicles to enter the growth phase (anagen) of the hair cycle after being arrested in the resting phase (telogen). Current pharmacologic therapies have been largely unsuccessful in targeting pathways that can be selectively modulated to i...

journal_title：Science advances

authors： Harel S,Higgins CA,Cerise JE,Dai Z,Chen JC,Clynes R,Christiano AM

更新日期：2015-10-23 00:00:00

abstract：:The formation of the Isthmus of Panama stands as one of the greatest natural events of the Cenozoic, driving profound biotic transformations on land and in the oceans. Some recent studies suggest that the Isthmus formed many millions of years earlier than the widely recognized age of approximately 3 million years ago ...

journal_title：Science advances

authors： O'Dea A,Lessios HA,Coates AG,Eytan RI,Restrepo-Moreno SA,Cione AL,Collins LS,de Queiroz A,Farris DW,Norris RD,Stallard RF,Woodburne MO,Aguilera O,Aubry MP,Berggren WA,Budd AF,Cozzuol MA,Coppard SE,Duque-Caro H,Finne

更新日期：2016-08-17 00:00:00

abstract：:Efforts at altering the dismal prognosis of pediatric midline gliomas focus on direct delivery strategies like convection-enhanced delivery (CED), where a cannula is implanted into tumor. Successful CED treatments require confirmation of tumor coverage, dosimetry, and longitudinal in vivo pharmacokinetic monitoring. T...

journal_title：Science advances

authors： Tosi U,Kommidi H,Adeuyan O,Guo H,Maachani UB,Chen N,Su T,Zhang G,Pisapia DJ,Dahmane N,Ting R,Souweidane MM

更新日期：2020-07-24 00:00:00

abstract：:The structural hierarchy exhibited by materials on more than one length scale can play a major part in determining bulk material properties. Understanding the hierarchical structure can lead to new materials with physical properties tailored for specific applications. We have used a combined experimental and phase-fie...

journal_title：Science advances

authors： Meher S,Aagesen LK,Carroll MC,Pollock TM,Carroll LJ

更新日期：2018-11-16 00:00:00

abstract：:Amorphous solids, such as glasses, have complex responses to deformations, with substantial consequences in material design and applications. In this respect, two intertwined aspects are important: stability and reversibility. It is crucial to understand, on the one hand, how a glass may become unstable due to increas...

journal_title：Science advances

authors： Jin Y,Urbani P,Zamponi F,Yoshino H

更新日期：2018-12-07 00:00:00

abstract：:Sister chromatid cohesion requires cohesin to act as a protein linker to hold chromatids together. How cohesin tethers chromatids remains poorly understood. We have used optical tweezers to visualize cohesin as it holds DNA molecules. We show that cohesin complexes tether DNAs in the presence of Scc2/Scc4 and ATP demo...

journal_title：Science advances

authors： Gutierrez-Escribano P,Newton MD,Llauró A,Huber J,Tanasie L,Davy J,Aly I,Aramayo R,Montoya A,Kramer H,Stigler J,Rueda DS,Aragon L

更新日期：2019-11-27 00:00:00

abstract：:Slow slip events have been suggested to trigger subduction earthquakes. However, examples to date have been poorly recorded, occurring offshore, where data are sparse. Better understanding of slow slip events and their influence on subsequent earthquakes is critical for hazard forecasts. We analyze a well-recorded eve...

journal_title：Science advances

authors： Voss N,Dixon TH,Liu Z,Malservisi R,Protti M,Schwartz S

更新日期：2018-10-31 00:00:00

abstract：:The polar nature of the C═O bond commonly allows it to undergo direct attack by nucleophiles at the electrophilic carbon atom in which ketones and aldehydes act as alkyl carbocation equivalents. In contrast, transformations in which ketones and aldehydes act as alkyl radical equivalents (generated in carbonyl carbon) ...

journal_title：Science advances

authors： Dong J,Wang Z,Wang X,Song H,Liu Y,Wang Q

更新日期：2019-10-11 00:00:00

abstract：:Maximizing the sustainable supercurrent density, J C, is crucial to high-current applications of superconductivity. To achieve this, preventing dissipative motion of quantized vortices is key. Irradiation of superconductors with high-energy heavy ions can be used to create nanoscale defects that act as deep pinning po...

journal_title：Science advances

authors： Massee F,Sprau PO,Wang YL,Davis JC,Ghigo G,Gu GD,Kwok WK

更新日期：2015-05-20 00:00:00

abstract：:Band structure theory plays an essential role in exploring physics in both solid-state systems and photonics. Here, we demonstrate a direct experimental measurement of the dynamic band structure in a synthetic space including the frequency axis of light, realized in a ring resonator under near-resonant dynamic modulat...

journal_title：Science advances

authors： Li G,Zheng Y,Dutt A,Yu D,Shan Q,Liu S,Yuan L,Fan S,Chen X

更新日期：2021-01-08 00:00:00

abstract：:Self-propelling micromotors are emerging as a promising micro- and nanoscale tool for single-cell analysis. We have recently shown that the field gradients necessary to manipulate matter via dielectrophoresis can be induced at the surface of a polarizable active ("self-propelling") metallodielectric Janus particle (JP...

journal_title：Science advances

authors： Wu Y,Fu A,Yossifon G

更新日期：2020-01-29 00:00:00

abstract：:The ability of a material to adopt multiple structures, known as polymorphism, is a fascinating natural phenomenon. Various polymorphs with unusual properties are routinely synthesized by compression under positive pressure. However, changing a material's structure by applying tension under negative pressure is much m...

journal_title：Science advances

authors： Siol S,Holder A,Steffes J,Schelhas LT,Stone KH,Garten L,Perkins JD,Parilla PA,Toney MF,Huey BD,Tumas W,Lany S,Zakutayev A

更新日期：2018-04-20 00:00:00

abstract：:Changes in extreme weather, such as tropical cyclones, are one of the most serious ways society experiences the impact of climate change. Advance forecasted conditional attribution statements, using a numerical model, were made about the anthropogenic climate change influence on an individual tropical cyclone, Hurrica...

journal_title：Science advances

authors： Reed KA,Stansfield AM,Wehner MF,Zarzycki CM

更新日期：2020-01-01 00:00:00

abstract：:Improved constraints on lower-mantle composition are fundamental to understand the accretion, differentiation, and thermochemical evolution of our planet. Cosmochemical arguments indicate that lower-mantle rocks may be enriched in Si relative to upper-mantle pyrolite, whereas seismic tomography images suggest whole-ma...

journal_title：Science advances

authors： Ballmer MD,Schmerr NC,Nakagawa T,Ritsema J

更新日期：2015-12-10 00:00:00

abstract：:Analog machine learning hardware platforms promise to be faster and more energy efficient than their digital counterparts. Wave physics, as found in acoustics and optics, is a natural candidate for building analog processors for time-varying signals. Here, we identify a mapping between the dynamics of wave physics and...

journal_title：Science advances

authors： Hughes TW,Williamson IAD,Minkov M,Fan S

更新日期：2019-12-20 00:00:00

abstract：:Active materials are capable of converting free energy into directional motion, giving rise to notable dynamical phenomena. Developing a general understanding of their structure in relation to the underlying nonequilibrium physics would provide a route toward control of their dynamic behavior and pave the way for pote...

journal_title：Science advances

authors： Kumar N,Zhang R,de Pablo JJ,Gardel ML

更新日期：2018-10-12 00:00:00

abstract：:Revealing physical interactions in complex systems from observed collective dynamics constitutes a fundamental inverse problem in science. Current reconstruction methods require access to a system's model or dynamical data at a level of detail often not available. We exploit changes in invariant measures, in particula...

journal_title：Science advances

authors： Nitzan M,Casadiego J,Timme M

更新日期：2017-02-10 00:00:00

abstract：:Understanding the precise atomic structure of ice surfaces is critical for revealing the mechanisms of physical and chemical phenomena at the surfaces, such as ice growth, melting, and chemical reactions. Nevertheless, no conclusive structure has been established. In this study, noncontact atomic force microscopy was ...

journal_title：Science advances

authors： Kawakami N,Iwata K,Shiotari A,Sugimoto Y

更新日期：2020-09-11 00:00:00

abstract：:The urea channel of Helicobacterpylori (HpUreI) is an ideal drug target for preventing gastric cancer but incomplete understanding of its gating mechanism has hampered development of inhibitors for the eradication of H. pylori. Here, we present the cryo-EM structures of HpUreI in closed and open conformations, both at...

journal_title：Science advances

authors： Cui Y,Zhou K,Strugatsky D,Wen Y,Sachs G,Zhou ZH,Munson K

更新日期：2019-03-20 00:00:00

abstract：:Goat domestication was critical for agriculture and civilization, but its underlying genetic changes and selection regimes remain unclear. Here, we analyze the genomes of worldwide domestic goats, wild caprid species, and historical remains, providing evidence of an ancient introgression event from a West Caucasian tu...

journal_title：Science advances

authors： Zheng Z,Wang X,Li M,Li Y,Yang Z,Wang X,Pan X,Gong M,Zhang Y,Guo Y,Wang Y,Liu J,Cai Y,Chen Q,Okpeku M,Colli L,Cai D,Wang K,Huang S,Sonstegard TS,Esmailizadeh A,Zhang W,Zhang T,Xu Y,Xu N,Yang Y,Han J,C

更新日期：2020-05-20 00:00:00

abstract：:The ongoing conservation treatment program of the Ghent Altarpiece by Hubert and Jan Van Eyck, one of the iconic paintings of the west, has revealed that the designs of the paintings were changed several times, first by the original artists, and then during later restorations. The central motif, The Lamb of God, repre...

journal_title：Science advances

authors： Van der Snickt G,Dooley KA,Sanyova J,Dubois H,Delaney JK,Gifford EM,Legrand S,Laquiere N,Janssens K

更新日期：2020-07-29 00:00:00

abstract：:Six percent of Americans, including 3 million high schoolers, use e-cigarettes, which contain potentially toxic substances, volatile organic compounds, and metals. We present the first human study on the effects of e-cigarette exposure in the oral cavity. By interrogating both immunoinflammatory responses and microbia...

journal_title：Science advances

authors： Ganesan SM,Dabdoub SM,Nagaraja HN,Scott ML,Pamulapati S,Berman ML,Shields PG,Wewers ME,Kumar PS

更新日期：2020-05-27 00:00:00

abstract：:Previous studies have extensively investigated the impact of Arctic sea ice anomalies on the midlatitude circulation and associated surface climate in winter. However, there is an ongoing scientific debate regarding whether and how sea ice retreat results in the observed cold anomaly over the adjacent continents. We p...

journal_title：Science advances

authors： Zhang P,Wu Y,Simpson IR,Smith KL,Zhang X,De B,Callaghan P

更新日期：2018-07-25 00:00:00

abstract：:Development of composite indicators for integrated health in populations typically relies on a priori assumptions rather than model-free, data-driven evidence. Traditional variable selection processes tend not to consider relatedness and redundancy among variables, instead considering only individual correlations. In ...

journal_title：Science advances

authors： Servadio JL,Convertino M

更新日期：2018-02-02 00:00:00

abstract：:To achieve global elimination of hepatitis C virus (HCV), an effective cross-genotype vaccine is needed. The HCV envelope glycoprotein E2 is the main target for neutralizing antibodies (nAbs), which aid in HCV clearance and protection. E2 is structurally flexible and functions in engaging host receptors. Many nAbs bin...

journal_title：Science advances

authors： Tzarum N,Giang E,Kadam RU,Chen F,Nagy K,Augestad EH,Velázquez-Moctezuma R,Keck ZY,Hua Y,Stanfield RL,Dreux M,Prentoe J,Foung SKH,Bukh J,Wilson IA,Law M

更新日期：2020-07-24 00:00:00

abstract：:Transcriptional status determines the HIV replicative state in infected patients. However, the transcriptional mechanisms for proviral replication control remain unclear. In this study, we show that, apart from its function in HIV integration, LEDGF/p75 differentially regulates HIV transcription in latency and provira...

journal_title：Science advances

authors： Gao R,Bao J,Yan H,Xie L,Qin W,Ning H,Huang S,Cheng J,Zhi R,Li Z,Tucker B,Chen Y,Zhang K,Wu X,Liu Z,Gao X,Hu D

更新日期：2020-05-13 00:00:00

abstract：:While the ecological impacts of fishing the waters beyond national jurisdiction (the "high seas") have been widely studied, the economic rationale is more difficult to ascertain because of scarce data on the costs and revenues of the fleets that fish there. Newly compiled satellite data and machine learning now allow ...

journal_title：Science advances

authors： Sala E,Mayorga J,Costello C,Kroodsma D,Palomares MLD,Pauly D,Sumaila UR,Zeller D

更新日期：2018-06-06 00:00:00

abstract：:At a time of heightened anxiety surrounding immigration, state governments have increasingly sought to manage immigrant and refugee flows. Yet the factors that influence where immigrants choose to settle after arrival remain unclear. We bring evidence to this question by analyzing population-level data for refugees re...

journal_title：Science advances

authors： Mossaad N,Ferwerda J,Lawrence D,Weinstein J,Hainmueller J

更新日期：2020-08-07 00:00:00

abstract：:The cellular and the molecular mechanisms by which long noncoding RNAs (lncRNAs) may regulate presynaptic function and neuronal activity are largely unexplored. Here, we established an integrated screening strategy to discover lncRNAs implicated in neurotransmitter and synaptic vesicle release. With this approach, we ...

journal_title：Science advances

authors： Keihani S,Kluever V,Mandad S,Bansal V,Rahman R,Fritsch E,Gomes LC,Gärtner A,Kügler S,Urlaub H,Wren JD,Bonn S,Rizzoli SO,Fornasiero EF

更新日期：2019-12-18 00:00:00

abstract：:Photonic crystal nanocavities, which have modal volumes of the order of a cubic wavelength in the material, are of great interest as flexible platforms for manipulating photons. Recent developments in ultra-high quality factor nanocavities with long photon lifetimes have encouraged us to develop an ultra-compact and f...

journal_title：Science advances

authors： Konoike R,Nakagawa H,Nakadai M,Asano T,Tanaka Y,Noda S

更新日期：2016-05-20 00:00:00