Cryogenian evolution of stigmasteroid biosynthesis.

abstract：:Dynamic modulation of soft helix in terms of the molecular organization, handedness, and pitch length could result in a sophisticated control over its functions, opening numerous possibilities toward the exploration of previously unidentified applications. Here, we report a dynamic and reversible transformation of a s...

journal_title：Science advances

authors： Yuan CL,Huang W,Zheng ZG,Liu B,Bisoyi HK,Li Y,Shen D,Lu Y,Li Q

更新日期：2019-10-04 00:00:00

abstract：:Changes in CO2 emissions during the COVID-19 pandemic have been estimated from indicators on activities like transportation and electricity generation. Here, we instead use satellite observations together with bottom-up information to track the daily dynamics of CO2 emissions during the pandemic. Unlike activity data,...

journal_title：Science advances

authors： Zheng B,Geng G,Ciais P,Davis SJ,Martin RV,Meng J,Wu N,Chevallier F,Broquet G,Boersma F,van der A R,Lin J,Guan D,Lei Y,He K,Zhang Q

更新日期：2020-12-02 00:00:00

abstract：:Traumatic brain injury (TBI) is a major cause of mortality and morbidity. Preventative measures reduce injury incidence and/or severity, yet one-third of hospitalized patients with TBI die from secondary pathological processes that develop during supervised care. Neutrophils, which orchestrate innate immune responses,...

journal_title：Science advances

authors： Vaibhav K,Braun M,Alverson K,Khodadadi H,Kutiyanawalla A,Ward A,Banerjee C,Sparks T,Malik A,Rashid MH,Khan MB,Waters MF,Hess DC,Arbab AS,Vender JR,Hoda N,Baban B,Dhandapani KM

更新日期：2020-05-29 00:00:00

abstract：:Traumatic spinal cord injury (SCI) brings numerous inflammatory cells, including macrophages, from the circulating blood to lesions, but pathophysiological impact resulting from spatiotemporal dynamics of macrophages is unknown. Here, we show that macrophages centripetally migrate toward the lesion epicenter after inf...

journal_title：Science advances

authors： Kobayakawa K,Ohkawa Y,Yoshizaki S,Tamaru T,Saito T,Kijima K,Yokota K,Hara M,Kubota K,Matsumoto Y,Harimaya K,Ozato K,Masuda T,Tsuda M,Tamura T,Inoue K,Edgerton VR,Iwamoto Y,Nakashima Y,Okada S

更新日期：2019-05-15 00:00:00

abstract：:The response to programmed cell death protein-1 (PD-1)/programmed death ligand-1 (PD-L1) blockade in cancer immunotherapy is limited because of multiple immune evasion mechanisms. Here, a previously unknown strategy is proposed to synergize the nuclear factor κB (NF-κB) inhibition and PD-1 blockade for antitumor immun...

journal_title：Science advances

authors： Xiao Z,Su Z,Han S,Huang J,Lin L,Shuai X

更新日期：2020-02-05 00:00:00

abstract：:Characterizing and understanding the emergence of multiple macroscopically ordered electronic phases through subtle tuning of temperature, pressure, and chemical doping has been a long-standing central issue for complex materials research. We report the first comprehensive studies of optical doping-induced emergence o...

journal_title：Science advances

authors： Han TR,Zhou F,Malliakas CD,Duxbury PM,Mahanti SD,Kanatzidis MG,Ruan CY

更新日期：2015-06-26 00:00:00

abstract：:Demyelinating diseases involve loss of myelin sheaths and eventually lead to neurological problems. Unfortunately, the precise mechanisms remain unknown, and there are no effective therapies. To overcome these limitations, a reliable and physiologically relevant in vitro model is required. Here, we present a three-dim...

journal_title：Science advances

authors： Hyung S,Lee SR,Kim J,Kim Y,Kim S,Kim HN,Jeon NL

更新日期：2021-01-29 00:00:00

abstract：:Animal collective motion arises from the intricate interactions between the natural variability among individuals, and the homogenizing effect of the group, working to generate synchronization and maintain coherence. Here, these interactions were studied using marching locust nymphs under controlled laboratory setting...

journal_title：Science advances

authors： Knebel D,Ayali A,Guershon M,Ariel G

更新日期：2019-01-02 00:00:00

abstract：:The outbreak of the highly contagious and deadly severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), also known as coronavirus disease 2019 (COVID-19), has posed a serious threat to public health across the globe, calling for the development of effective diagnostic markers and therapeutics. Here, we report a...

journal_title：Science advances

authors： Park HH,Kim HN,Kim H,Yoo Y,Shin H,Choi EY,Bae JS,Lee W

更新日期：2020-07-31 00:00:00

abstract：:Key issues for Na-ion batteries are the development of promising electrode materials with favorable sites for Na+ ion intercalation/deintercalation and an understanding of the reaction mechanisms due to its high activation energy and poor electrochemical reversibility. We first report a layered H0.43Ti0.93Nb1.07O5 as ...

journal_title：Science advances

authors： Park H,Kwon J,Choi H,Song T,Paik U

更新日期：2017-10-06 00:00:00

abstract：:Complex behaviors demand temporal coordination among functionally distinct brain regions. The basal forebrain's afferent and efferent structure suggests a capacity for mediating this coordination at a large scale. During performance of a spatial orientation task, synaptic activity in this region was dominated by four ...

journal_title：Science advances

authors： Tingley D,Alexander AS,Quinn LK,Chiba AA,Nitz D

更新日期：2018-08-01 00:00:00

abstract：:We report a negative resistance, namely, a voltage drop along the opposite direction of a current flow, in the superconducting gap of NbSe2 thin films under the irradiation of surface acoustic waves (SAWs). The amplitude of the negative resistance becomes larger by increasing the SAW power and decreasing temperature. ...

journal_title：Science advances

authors： Yokoi M,Fujiwara S,Kawamura T,Arakawa T,Aoyama K,Fukuyama H,Kobayashi K,Niimi Y

更新日期：2020-08-21 00:00:00

abstract：:Earthquake forecasting is the ultimate challenge for seismologists, because it condenses the scientific knowledge about the earthquake occurrence process, and it is an essential component of any sound risk mitigation planning. It is commonly assumed that, in the short term, trustworthy earthquake forecasts are possibl...

journal_title：Science advances

authors： Marzocchi W,Taroni M,Falcone G

更新日期：2017-09-13 00:00:00

abstract：:Extinction of conditioned fear necessitates the dynamic involvement of hippocampus, medial prefrontal cortex (mPFC), and basolateral amygdala (BLA), but key molecular players that regulate these circuits to achieve fear extinction remain largely unknown. Here, we report that acid-sensing ion channel 1a (ASIC1a) is a c...

journal_title：Science advances

authors： Wang Q,Wang Q,Song XL,Jiang Q,Wu YJ,Li Y,Yuan TF,Zhang S,Xu NJ,Zhu MX,Li WG,Xu TL

更新日期：2018-10-24 00:00:00

abstract：:The single-span membrane protein KCNE3 modulates a variety of voltage-gated ion channels in diverse biological contexts. In epithelial cells, KCNE3 regulates the function of the KCNQ1 potassium ion (K(+)) channel to enable K(+) recycling coupled to transepithelial chloride ion (Cl(-)) secretion, a physiologically crit...

journal_title：Science advances

authors： Kroncke BM,Van Horn WD,Smith J,Kang C,Welch RC,Song Y,Nannemann DP,Taylor KC,Sisco NJ,George AL Jr,Meiler J,Vanoye CG,Sanders CR

更新日期：2016-09-09 00:00:00

abstract：:Fractures and faults riddle the Earth's crust on all scales, and the deformation associated with them is presumed to have had significant effects on its petrological and structural evolution. However, despite the abundance of directly observable earthquake activity, unequivocal evidence for seismic slip rates along an...

journal_title：Science advances

authors： Austrheim H,Dunkel KG,Plümper O,Ildefonse B,Liu Y,Jamtveit B

更新日期：2017-02-22 00:00:00

abstract：:Dendritic actin networks develop from a first actin filament through branching by the Arp2/3 complex. At the surface of endosomes, the WASH complex activates the Arp2/3 complex and interacts with the capping protein for unclear reasons. Here, we show that the WASH complex interacts with dynactin and uncaps it through ...

journal_title：Science advances

authors： Fokin AI,David V,Oguievetskaia K,Derivery E,Stone CE,Cao L,Rocques N,Molinie N,Henriot V,Aumont-Nicaise M,Hinckelmann MV,Saudou F,Le Clainche C,Carter AP,Romet-Lemonne G,Gautreau AM

更新日期：2021-01-13 00:00:00

abstract：:Focal adjustment and zooming are universal features of cameras and advanced optical systems. Such tuning is usually performed longitudinally along the optical axis by mechanical or electrical control of focal length. However, the recent advent of ultrathin planar lenses based on metasurfaces (metalenses), which opens ...

journal_title：Science advances

authors： She A,Zhang S,Shian S,Clarke DR,Capasso F

更新日期：2018-02-23 00:00:00

abstract：:Protected areas (PAs) are essential to biodiversity conservation, but their static boundaries may undermine their potential for protecting species under climate change. We assessed how the climatic conditions within global terrestrial PAs may change over time. By 2070, protection is expected to decline in cold and war...

journal_title：Science advances

authors： Elsen PR,Monahan WB,Dougherty ER,Merenlender AM

更新日期：2020-06-17 00:00:00

abstract：:Quantum teleportation, which is the transfer of an unknown quantum state from one station to another over a certain distance with the help of nonlocal entanglement shared by a sender and a receiver, has been widely used as a fundamental element in quantum communication and quantum computation. Optical fibers are cruci...

journal_title：Science advances

authors： Huo M,Qin J,Cheng J,Yan Z,Qin Z,Su X,Jia X,Xie C,Peng K

更新日期：2018-10-19 00:00:00

abstract：:Avian wing shape is highly variable across species but only coarsely associated with flight behavior, performance, and body mass. An underexplored but potentially explanatory feature is the ability of birds to actively change wing shape to meet aerodynamic and behavioral demands. Across 61 species, we found strong ass...

journal_title：Science advances

authors： Baliga VB,Szabo I,Altshuler DL

更新日期：2019-10-23 00:00:00

abstract：:Organophosphate-based pesticides inhibit acetylcholinesterase (AChE), which plays a pivotal role in neuromuscular function. While spraying in the field, farmworkers get exposed to pesticides through the dermal route. Internalized pesticide inhibits AChE, which leads to neurotoxicity, cardiotoxicity, cognitive dysfunct...

journal_title：Science advances

authors： Thorat K,Pandey S,Chandrashekharappa S,Vavilthota N,Hiwale AA,Shah P,Sreekumar S,Upadhyay S,Phuntsok T,Mahato M,Mudnakudu-Nagaraju KK,Sunnapu O,Vemula PK

更新日期：2018-10-17 00:00:00

abstract：:Carbon deposits are well-known inhibitors of transition metal catalysts. In contrast to this undesirable behavior, here we show that epitaxial graphene grown on Ru(0001) promotes the reversible formation of a C-C bond between -CH2CN and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ). The catalytic role of graphene is mult...

journal_title：Science advances

authors： Navarro JJ,Pisarra M,Nieto-Ortega B,Villalva J,Ayani CG,Díaz C,Calleja F,Miranda R,Martín F,Pérez EM,Vázquez de Parga AL

更新日期：2018-12-14 00:00:00

abstract：:Materials with a stochastic microstructure, like foams, typically exhibit low mechanical stiffness, whereas lattices with a designed microarchitecture often show notably improved stiffness. These periodic architected materials have previously been designed by rule, using the Maxwell criterion to ensure that their defo...

journal_title：Science advances

authors： Chen W,Watts S,Jackson JA,Smith WL,Tortorelli DA,Spadaccini CM

更新日期：2019-09-27 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：:Cell chirality is a newly discovered intrinsic property of the cell, reflecting the bias of the cell to polarize in the left-right axis. Despite increasing evidence on its substantial role in the asymmetric development of embryos, little is known about implications of cell chirality in physiology and disease. We demon...

journal_title：Science advances

authors： Fan J,Ray P,Lu YW,Kaur G,Schwarz JJ,Wan LQ

更新日期：2018-10-24 00:00:00

abstract：:Two-dimensional (2D) semiconductors have shown great potential for electronic and optoelectronic applications. However, their development is limited by a large Schottky barrier (SB) at the metal-semiconductor junction (MSJ), which is difficult to tune by using conventional metals because of the effect of strong Fermi ...

journal_title：Science advances

authors： Liu Y,Stradins P,Wei SH

更新日期：2016-04-22 00:00:00

abstract：:Among the existing elemental characterization techniques, particle-induced x-ray emission (PIXE) and energy-dispersive x-ray (EDX) spectroscopy are two of the most widely used in different scientific and technological fields. Here, we present the first quantitative laser-driven PIXE and laser-driven EDX experimental i...

journal_title：Science advances

authors： Mirani F,Maffini A,Casamichiela F,Pazzaglia A,Formenti A,Dellasega D,Russo V,Vavassori D,Bortot D,Huault M,Zeraouli G,Ospina V,Malko S,Apiñaniz JI,Pérez-Hernández JA,De Luis D,Gatti G,Volpe L,Pola A,Passoni M

更新日期：2021-01-15 00:00:00

abstract：:A withdrawal-associated impairment in β-endorphin neurotransmission in the arcuate nucleus (ARC) of the hypothalamus is associated with alcohol dependence characterized by a chronic relapsing disorder. Although acupuncture activates β-endorphin neurons in the ARC projecting to the nucleus accumbens (NAc), a role for A...

journal_title：Science advances

authors： Chang S,Kim DH,Jang EY,Yoon SS,Gwak YS,Yi YJ,Lee JY,Ahn SH,Kim JM,Ryu YH,Kim SN,Roh HS,Lee MY,Kim SC,Lee BH,Kim HY,Yang CH

更新日期：2019-09-04 00:00:00

abstract：:Local thermal magnetization fluctuations in Li-doped MnTe are found to increase its thermopower α strongly at temperatures up to 900 K. Below the Néel temperature (TN ~ 307 K), MnTe is antiferromagnetic, and magnon drag contributes αmd to the thermopower, which scales as ~T3. Magnon drag persists into the paramagnetic...

journal_title：Science advances

authors： Zheng Y,Lu T,Polash MMH,Rasoulianboroujeni M,Liu N,Manley ME,Deng Y,Sun PJ,Chen XL,Hermann RP,Vashaee D,Heremans JP,Zhao H

更新日期：2019-09-13 00:00:00