• ScienceDirect Publication: Talanta
• A new and feasible analytical method using reversed-phase dispersive liquid-liquid microextraction (RP-DLLME) for further determination of Nickel in hydrogenated vegetable fat

  Publication date: 1 February 2020Source: Talanta, Volume 208Author(s): Daneysa Lahis Kalschne, Cristiane Canan, Murilo Oliveira Beato, Oldair Donizete Leite, Eder Lisandro Moraes FloresAbstractA new and simple method for Ni determination in hydrogenated vegetable fat (HVF) has been developed using a RP-DLLME sample preparation procedure for further determination by flame atomic absorption spectrometry (FAAS) and graphite furnace atomic absorption

  ScienceDirect Publication: Talanta

  Thu Oct 10, 2019 04:09
• Open-tubular admicellar electrochromatography of charged analytes

  Publication date: 1 February 2020Source: Talanta, Volume 208Author(s): Raymond B. Yu, Joselito P. QuirinoAbstractFundamental studies on the separation of cationic and anionic analytes in open-tubular admicellar electrochromatography (OT-AMEC) using cetyltrimethylammonium bromide (CTAB) and fused silica capillaries are presented. OT-AMEC was compared with open-tubular admicellar liquid chromatography (OT-AMLC) by running the two methods using the

  ScienceDirect Publication: Talanta

  Thu Oct 10, 2019 04:09
• Science: Current Issue
• Response to Comment on "Cultural flies: Conformist social learning in fruitflies predicts long-lasting mate-choice traditions"

  Thornquist and Crickmore claim that systematic experimental error may explain the results of Danchin and colleagues. Their claim rests on mistakes in their analyses, for which we provide corrections. We reassert that conformity in fruitflies predicts long-lasting mate-preference traditions.

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Comment on "Cultural flies: Conformist social learning in fruitflies predicts long-lasting mate-choice traditions"

  The claims of Danchin et al. (Research Articles, 30 November 2018, p. 1025) regarding long-lasting mate preference based on conformity may result from systematic experimental error. Even if mate copying were a genuine phenomenon, it is unlikely to result in persisting culture in the wild.

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Axonal transport: Driving synaptic function

  The intracellular transport system in neurons is specialized to an extraordinary degree, enabling the delivery of critical cargo to sites in axons or dendrites that are far removed from the cell center. Vesicles formed in the cell body are actively transported by kinesin motors along axonal microtubules to presynaptic sites that can be located more than a meter away. Both growth factors and degradative vesicles carrying aged organelles or aggrega

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Sleep-wake cycles drive daily dynamics of synaptic phosphorylation

  The circadian clock drives daily changes of physiology, including sleep-wake cycles, through regulation of transcription, protein abundance, and function. Circadian phosphorylation controls cellular processes in peripheral organs, but little is known about its role in brain function and synaptic activity. We applied advanced quantitative phosphoproteomics to mouse forebrain synaptoneurosomes isolated across 24 hours, accurately quantifying almost

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• The forebrain synaptic transcriptome is organized by clocks but its proteome is driven by sleep

  Neurons have adapted mechanisms to traffic RNA and protein into distant dendritic and axonal arbors. Taking a biochemical approach, we reveal that forebrain synaptic transcript accumulation shows overwhelmingly daily rhythms, with two-thirds of synaptic transcripts showing time-of-day–dependent abundance independent of oscillations in the soma. These transcripts formed two sharp temporal and functional clusters, with transcripts preceding dawn re

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Migratory DCs activate TGF-{beta} to precondition naïve CD8+ T cells for tissue-resident memory fate

  Epithelial resident memory T (eTRM) cells serve as sentinels in barrier tissues to guard against previously encountered pathogens. How eTRM cells are generated has important implications for efforts to elicit their formation through vaccination or prevent it in autoimmune disease. Here, we show that during immune homeostasis, the cytokine transforming growth factor β (TGF-β) epigenetically conditions resting naïve CD8+ T cells and prepares them

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• New Products

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Global modeling of natures contributions to people

  The magnitude and pace of global change demand rapid assessment of nature and its contributions to people. We present a fine-scale global modeling of current status and future scenarios for several contributions: water quality regulation, coastal risk reduction, and crop pollination. We find that where people’s needs for nature are now greatest, nature’s ability to meet those needs is declining. Up to 5 billion people face higher water pollution

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Making peace with imperfection

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Shisa7 is a GABAA receptor auxiliary subunit controlling benzodiazepine actions

  The function and pharmacology of -aminobutyric acid type A receptors (GABAARs) are of great physiological and clinical importance and have long been thought to be determined by the channel pore–forming subunits. We discovered that Shisa7, a single-passing transmembrane protein, localizes at GABAergic inhibitory synapses and interacts with GABAARs. Shisa7 controls receptor abundance at synapses and speeds up the channel deactivation kinetics. Shis

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Synergistic sorbent separation for one-step ethylene purification from a four-component mixture

  Purification of ethylene (C2H4), the largest-volume product of the chemical industry, currently involves energy-intensive processes such as chemisorption (CO2 removal), catalytic hydrogenation (C2H2 conversion), and cryogenic distillation (C2H6 separation). Although advanced physisorbent or membrane separation could lower the energy input, one-step removal of multiple impurities, especially trace impurities, has not been feasible. We introduce a

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Control of aversion by glycine-gated GluN1/GluN3A NMDA receptors in the adult medial habenula

  The unconventional N-methyl-d-aspartate (NMDA) receptor subunits GluN3A and GluN3B can, when associated with the other glycine-binding subunit GluN1, generate excitatory conductances purely activated by glycine. However, functional GluN1/GluN3 receptors have not been identified in native adult tissues. We discovered that GluN1/GluN3A receptors are operational in neurons of the mouse adult medial habenula (MHb), an epithalamic area controlling ave

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Chemical bond formation showing a transition from physisorption to chemisorption

  Surface molecules can transition from physisorption through weak van der Waals forces to a strongly bound chemisorption state by overcoming an energy barrier. We show that a carbon monoxide (CO) molecule adsorbed to the tip of an atomic force microscope enables a controlled observation of bond formation, including its potential transition from physisorption to chemisorption. During imaging of copper (Cu) and iron (Fe) adatoms on a Cu(111) surface

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• The low density and magnetization of a massive galaxy halo exposed by a fast radio burst

  Present-day galaxies are surrounded by cool and enriched halo gas extending for hundreds of kiloparsecs. This halo gas is thought to be the dominant reservoir of material available to fuel future star formation, but direct constraints on its mass and physical properties have been difficult to obtain. We report the detection of a fast radio burst (FRB 181112), localized with arcsecond precision, that passes through the halo of a foreground galaxy.

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Observation of half-quantum flux in the unconventional superconductor {beta}-Bi2Pd

  Magnetic flux quantization is one of the defining properties of a superconductor. We report the observation of half-integer magnetic flux quantization in mesoscopic rings of superconducting β-Bi2Pd thin films. The half-quantum fluxoid manifests itself as a phase shift in the quantum oscillation of the superconducting critical temperature. This result verifies unconventional superconductivity of β-Bi2Pd and is consistent with a spin-triplet pairi

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Spatial control of heavy-fermion superconductivity in CeIrIn5

  Although crystals of strongly correlated metals exhibit a diverse set of electronic ground states, few approaches exist for spatially modulating their properties. In this study, we demonstrate disorder-free control, on the micrometer scale, over the superconducting state in samples of the heavy-fermion superconductor CeIrIn5. We pattern crystals by focused ion beam milling to tailor the boundary conditions for the elastic deformation upon thermal

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Torsional refrigeration by twisted, coiled, and supercoiled fibers

  Higher-efficiency, lower-cost refrigeration is needed for both large- and small-scale cooling. Refrigerators using entropy changes during cycles of stretching or hydrostatic compression of a solid are possible alternatives to the vapor-compression fridges found in homes. We show that high cooling results from twist changes for twisted, coiled, or supercoiled fibers, including those of natural rubber, nickel titanium, and polyethylene fishing line

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Direct electrosynthesis of pure aqueous H2O2 solutions up to 20% by weight using a solid electrolyte

  Hydrogen peroxide (H2O2) synthesis generally requires substantial postreaction purification. Here, we report a direct electrosynthesis strategy that delivers separate hydrogen (H2) and oxygen (O2) streams to an anode and cathode separated by a porous solid electrolyte, wherein the electrochemically generated H+ and HO2– recombine to form pure aqueous H2O2 solutions. By optimizing a functionalized carbon black catalyst for two-electron oxygen redu

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Architecture of human Rag GTPase heterodimers and their complex with mTORC1

  The Rag guanosine triphosphatases (GTPases) recruit the master kinase mTORC1 to lysosomes to regulate cell growth and proliferation in response to amino acid availability. The nucleotide state of Rag heterodimers is critical for their association with mTORC1. Our cryo–electron microscopy structure of RagA/RagC in complex with mTORC1 shows the details of RagA/RagC binding to the RAPTOR subunit of mTORC1 and explains why only the RagAGTP/RagCGDP nu

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Experience versus salary

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Phase-change heterostructure enables ultralow noise and drift for memory operation

  Artificial intelligence and other data-intensive applications have escalated the demand for data storage and processing. New computing devices, such as phase-change random access memory (PCRAM)–based neuro-inspired devices, are promising options for breaking the von Neumann barrier by unifying storage with computing in memory cells. However, current PCRAM devices have considerable noise and drift in electrical resistance that erodes the precision

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Better contact to WSe2 nanosheets

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Expanding DNA storage capacity

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Antibiotics blunt flu immunity

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Glassy carbon for maximum impact

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Plants, soils, and climate

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Species shuffling by humans

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Getting more bits out of PCRAM

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Imaging a chemisorption process

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• The future of nature's contributions

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Probing a galaxy halo with a radio burst

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• An inhibitor causes neuronal excitation

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• From trafficking to maintenance

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Unconventional oscillations

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Dishing out treatment recommendations

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Fine control of brain GABAA receptors

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Selecting for ethylene

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Keeping track of time

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• A direct route to pure peroxide

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Mastering regulation

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Twisting is cool

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Autoimmunity shows its CARDs

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Tibetan hot-spring snakes under threat

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Sleep-wake cycles at mouse synapses

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Recovered Tibetan antelope at risk again

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Confronting climate change

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Grieving environmental scientists need support

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• The precautionary tale of golden rice

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• The promise of phase-change materials

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Linking the need to sleep with synaptic function

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Training T cells for tissue residence

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Double counting and the Paris Agreement rulebook

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Modulating anxiety and activity

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Societal burdens of nature loss

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Telescope seeks clues to exoplanet interiors

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Seeing fossils in a new light

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Our future in the fjords

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Nobel honors pioneers in cosmology and exoplanets

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Bronze Age inequality and family life revealed in powerful study

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Cellular oxygen sensor system earns Nobel for trio

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• News at a glance

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Science organizations speak out in defense of Uyghur academics

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Topic choice works against black NIH applicants

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Some naïve T cell fates are sealed

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Responsible genetic genealogy

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Modulating superconductivity

  Science: Current Issue

  Thu Oct 10, 2019 10:40
• Nature Communications - current - nature.com science feeds
• Marine nitrogen fixers mediate a low latitude pathway for atmospheric CO₂ drawdown

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12549-zIron fertilisation of the high latitude oceans is a well-established biological mechanism to explain the ice age drawdown of atmospheric CO2, yet modelling has so far struggled to account for a sufficient drawdown via this mechanism. Here, the authors propose that N2 fixers, which inhabit the lower latitude ocean, made a significant contribution to CO2 drawdow

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Rational design of crystalline two-dimensional frameworks with highly complicated topological structures

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12596-6Constructing two-dimensional (2D) polymers with complex tessellation patterns is important for the fabrication of advanced materials but achieving such complexity is a great challenge. Here the authors report a tessellated 2D covalent organic framework with increased structural complexity as well as different pore structures.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Spontaneous ssDNA stretching on graphene and hexagonal boron nitride in plane heterostructures

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12584-wSingle stranded DNA analysis is of interest for a range of applications; however, natural folding of DNA can cause problems with this. Here, the authors report on the in silico analysis of graphene and hexagonal-boron-nitride structures for the stretching and unfolding of DNA to allow for analysis.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• N⁶-methyladenosine mRNA marking promotes selective translation of regulons required for human erythropoiesis

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12518-6Erythropoiesis can be regulated by transcriptional, epigenetic, and post-transcriptional mechanisms. Here the authors report that N6-methyladenosine mRNA methyltransferase complex stimulates erythropoiesis by promoting translation of specific mRNAs.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Allosteric activation of an ion channel triggered by modification of mechanosensitive nano-pockets

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12591-xHow mechanosensitive ion channels, such as MscL, are activated by lipids and physical properties of the membrane remains unclear. Here authors use PELDOR/DEER spectroscopy and identify a single site which generated an allosteric structural response in the absence of membrane tension.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Thermodynamic control of −1 programmed ribosomal frameshifting

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12648-xProgrammed ribosomal frameshifting (PRF) is an alternative translation strategy that causes controlled slippage of the ribosome along the mRNA, changing the sequence of the synthesized protein. Here the authors provide a thermodynamic framework that explains how mRNA sequence determines the efficiency of frameshifting.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Detection of spacer precursors formed in vivo during primed CRISPR adaptation

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12417-wPrimed adaptation in the CRISPR-Cas system helps recognition of previously encountered sequence elements and promotes the formation of new memories. Here the authors characterized spacer precursors of type I-E and type I-F CRISPR-Cas system using in vivo models.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Reduced body sizes in climate-impacted Borneo moth assemblages are primarily explained by range shifts

  Nature Communications, Published online: 10 October 2019; doi:10.1038/s41467-019-12655-yBody size shifts under climate change may arise from species range shifts, intraspecific size shifts, or both. Here the authors show that body size reduction in moth assemblages on Mt. Kinabalu, Borneo, over 42 years are driven more by species range shifts than by within-species shrinkage.

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Marine nitrogen fixers mediate a low latitude pathway for atmospheric CO₂ drawdown

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Rational design of crystalline two-dimensional frameworks with highly complicated topological structures

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Spontaneous ssDNA stretching on graphene and hexagonal boron nitride in plane heterostructures

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• N⁶-methyladenosine mRNA marking promotes selective translation of regulons required for human erythropoiesis

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Allosteric activation of an ion channel triggered by modification of mechanosensitive nano-pockets

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Thermodynamic control of −1 programmed ribosomal frameshifting

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Detection of spacer precursors formed in vivo during primed CRISPR adaptation

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00
• Reduced body sizes in climate-impacted Borneo moth assemblages are primarily explained by range shifts

  Nature Communications - current - nature.com science feeds

  Wed Oct 09, 2019 17:00