ScienceDirect Publication: Talanta
- Untargeted characterization of extracts from Cannabis sativa L. cultivars by gas and liquid chromatography coupled to mass spectrometry in high resolution modePublication date: Available online 25 September 2019Source: TalantaAuthor(s): M.M. Delgado-Povedano, C. Sánchez-Carnerero Callado, F. Priego-Capote, C. Ferreiro-VeraAbstractElucidation of Cannabis composition is required to evaluate the potential of this plant for pharmacological uses, but also for implementation in breeding programs with agronomical purposes. The aim of the present study was to develop a method for untargeted analysis of polar a
- A novel all-3D-printed cell-on-a-chip device as a useful electroanalytical tool: Application to the simultaneous voltammetric determination of caffeine and paracetamolPublication date: Available online 24 September 2019Source: TalantaAuthor(s): Vassiliki Katseli, Anastasios Economou, Christos KokkinosAbstractIn this work, we describe a novel electrochemical cell-on-a-chip device fabricated entirely by 3D printing. The device was 3D-printed via a single-step process using a dual extruder 3D printer and is composed of a transparent miniature cell (printed from a polylactic acid non-conductive filament) with 3 el
- Electrochemical sensor based on reduced graphene oxide and molecularly imprinted poly(phenol) for D-xylose determinationPublication date: Available online 24 September 2019Source: TalantaAuthor(s): Luiz Felipe Pompeu Prado Moreira, Edervaldo Buffon, Nelson Ramos StradiottoAbstractThe present work reports the development of an electrochemical sensor based on molecularly imprinted polymer for the determination of D-xylose. This is the first report of its kind in the literature. The sensor was prepared through the modification of a glassy carbon electrode with reduce
- Optical portable instrument for the determination of CO<sub>2</sub> in indoor environmentsPublication date: Available online 24 September 2019Source: TalantaAuthor(s): M.D. Fernández-Ramos, F. Moreno-Puche, P. Escobedo, P.A. García-López, L.F. Capitán-Vallvey, A. Martínez-OlmosAbstractA portable device based on a colorimetric sensor to determine the atmospheric level of CO2 gas is presented in this work. The system is based on a low-cost, low-power System on a Chip (SoC) microcontroller with integrated Wi-Fi. A user-friendly applicati
Nature Communications - current - nature.com science feeds
- Gigantic jet discharges evolve stepwise through the middle atmosphereNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12261-yGigantic jets, lightning discharges originating from tropical thunderstorms that can reach the base of the ionosphere at 90 km altitude, have not been captured using high-speed video cameras before. Here, the first such images are reported, showing a step-wise evolution of gigantic jets during their rising phase.
- Tankyrase disrupts metabolic homeostasis and promotes tumorigenesis by inhibiting LKB1-AMPK signallingNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12377-1The LKB1/AMPK is crucial for maintaining cellular homeostasis and is often deregulated in tumours. Here, the authors show that the ribosylation of LKB1 by tankyrase-RNF146 axis results in attenuation of LKB1 pathway activation.
- Biologically encoded magnonicsNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12219-0The capability to engineer magnon states in confined geometries is vital to future nano-magnonics. Here the authors demonstrate that the topology of the magnon bands is determined by the local arrangement and orientation of nanoparticles and can be controlled by the genotype of magnetotactic bacteria.
- Soliton superlattices in twisted hexagonal boron nitrideNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12327-xSolitons may develop when strain forms at line defects separating commensurate domains in misaligned or lattice-mismatched van der Waals heterostructures. Here, the authors use atomic-force microscopy and nano-infrared spectroscopy to image solitons in thin hBN crystals in the form of long-range periodic superstructures, creating sub-surface hexagonal networ
- Carbon dioxide capture and efficient fixation in a dynamic porous coordination polymerNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12414-zPorous coordination polymers that possess structural flexibility show great promise for gas adsorption and catalysis. Here the authors synthesize a dynamic porous coordination polymer with rotating ligands that permit effective CO2 trapping, and demonstrate subsequent CO2 cycloaddition to epoxides.
- Structural color three-dimensional printing by shrinking photonic crystalsNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12360-wThe ability to print arbitrary colors and shapes in all three dimensions at microscopic length scales is still lacking. Here, the authors introduce a means to produce three-dimensionally-printed photonic crystals with a periodicity as small as 280 nm, achieving sub-100-nm features with a full range of colors.
- Inequality of household consumption and air pollution-related deaths in ChinaNature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12254-xConsidering air pollution-induced health risks from a consumption perspective is important. Here the authors evaluated the premature deaths resulting from household consumption across 30 Chinese provinces and find that rural households can cause a similar number of pollution-induced deaths as urban households despite a larger and wealthier urban population,
- Modulation of M2 macrophage polarization by the crosstalk between Stat6 and Trim24Nature Communications, Published online: 25 September 2019; doi:10.1038/s41467-019-12384-2Stat6 promotes M2 macrophage polarization. Here the authors characterize Trim24-CBP-Stat6 circuit regulating M2 macrophage polarization via Stat6 acetylation, and show it contributes to pro-tumorigenic macrophage activity in mice.
JoVE: Journal of Visualized Experiments
- Time-lapse Live Imaging and Quantification of Fast Dendritic Branch Dynamics in Developing Drosophila NeuronsHere, we describe the method we employed to image highly motile dendritic filopodia in a live preparation of the Drosophila larval brain, and the protocol we developed to quantify time-lapse 3D imaging datasets for quantitative assessments of dendrite dynamics in developing neurons.
- Nanoscopic Imaging of Human Tissue Sections via Physical and Isotropic ExpansionNanoscale imaging of clinical tissue samples can improve understanding of disease pathogenesis. Expansion pathology (ExPath) is a version of expansion microscopy (ExM), modified for compatibility with standard clinical tissue samples, to explore the nanoscale configuration of biomolecules using conventional diffraction limited microscopes.
- An Ectopic Chemokine Expression Model for Testing Macrophage Recruitment In VivoTo test the effect of a chemokine on macrophage recruitment in vivo, the whole mount in situ hybridization was used to detect the ectopic expression of the chemokine, and immunostaining was used to label macrophages. Live imaging was used for real-time observation of macrophage migration.
- Generation of Defined Genomic Modifications Using CRISPR-CAS9 in Human Pluripotent Stem CellsThis protocol provides a method to facilitate the generation of defined heterozygous or homozygous nucleotide changes using CRISPR-CAS9 in human pluripotent stem cells.
- Protocol to Create Chronic Wounds in Diabetic MiceChronic wounds are developed from acute wounds on a diabetic mouse model by inducing high levels of oxidative stress after a full-thickness cutaneous wound. The wound is treated with inhibitors for catalase and glutathione peroxidase, resulting in impaired healing and biofilm development by bacteria present in the skin microbiome.
- Stem Cell-Derived Viral Ag-Specific T Lymphocytes Suppress HBV Replication in MicePresented here is a protocol for the effective suppression of hepatitis B virus (HBV) replication in mice by utilizing adoptive cell transfer (ACT) of stem cell-derived viral antigen (Ag)-specific T lymphocytes. This procedure may be adapted for potential ACT-based immunotherapy of HBV infection.
- Brain Infarct Segmentation and Registration on MRI or CT for Lesion-symptom MappingProvided here is a practical tutorial for an open-access, standardized image processing pipeline for the purpose of lesion-symptom mapping. A step-by-step walkthrough is provided for each processing step, from manual infarct segmentation on CT/MRI to subsequent registration to standard space, along with practical recommendations and illustrations with exemplary cases.
Journal of the American Chemical Society: Latest Articles (ACS Publications)
- [ASAP] Charge Transport and Quantum Interference Effects in Oxazole-Terminated Conjugated OligomersJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08427
- [ASAP] Reversible Structural Transformation between a Molecular Solomon Link and an Unusual Unsymmetrical Trefoil KnotJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08254
- [ASAP] Spotlights on Recent <italic toggle="yes">JACS</italic> PublicationsJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b10307
- [ASAP] How To Maximize Birefringence and Nonlinearity of p-Conjugated CyanuratesJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08851
- [ASAP] Breaking Symmetry: Engineering Single-Chain Dimeric Streptavidin as Host for Artificial MetalloenzymesJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b06923
- [ASAP] Organic Electron Delocalization Modulated by Ligand Charge States in [L<sub>2</sub>M]<sup><italic toggle="yes">n–</italic></sup> Complexes of Group 13 IonsJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b05602
- [ASAP] Probing Single Molecule Binding and Free Energy Profile with Plasmonic Imaging of NanoparticlesJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08405
- [ASAP] Polycation Architecture and Assembly Direct Successful Gene Delivery: Micelleplexes Outperform Polyplexes via Optimal DNA PackagingJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b06218
- [ASAP] Investigating the Kinetic Competency of <italic toggle="yes">Cr</italic>HydA1 [FeFe] Hydrogenase Intermediate States via Time-Resolved Infrared SpectroscopyJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08348
- [ASAP] Enantioselective Divergent Syntheses of (+)-Bulleyanaline and Related Isoquinoline Alkaloids from the Genus <italic toggle="yes">Corydalis</italic>Journal of the American Chemical SocietyDOI: 10.1021/jacs.9b08441
- [ASAP] Modular Dual-Tasked C–H Methylation via the Catellani StrategyJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b07857
- [ASAP] Assembling Pentatopic Terpyridine Ligands with Three Types of Coordination Moieties into a Giant Supramolecular Hexagonal Prism: Synthesis, Self-Assembly, Characterization, and Antimicrobial StudyJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08484
- [ASAP] Arm Growth and Facet Modulation in Perovskite NanocrystalsJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b09157
- [ASAP] EMM-17, a New Three-Dimensional Zeolite with Unique 11-Ring Channels and Superior Catalytic Isomerization PerformanceJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b07102
- [ASAP] Electrocatalytic Hydrogen Evolution from a Cobaloxime-Based Metal–Organic Framework Thin FilmJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b07084
- [ASAP] Mechanism and Origins of Enantioselectivities in Spirobiindane-Based Hypervalent Iodine(III)-Induced Asymmetric Dearomatizing SpirolactonizationsJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08243
- [ASAP] Uncovering the Role of Key Active-Site Side Chains in Catalysis: An Extended Brønsted Relationship for Substrate Deprotonation Catalyzed by Wild-Type and Variants of Triosephosphate IsomeraseJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08713
- [ASAP] Amplification of Elementary Surface Reaction Steps on Transition Metal Surfaces Using Liquid Crystals: Dissociative Adsorption and DehydrogenationJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08057
- [ASAP] Making Engineered 3D DNA Crystals RobustJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b06613
- [ASAP] Catalytic Enantioselective Addition of an Allyl Group to Ketones Containing a Tri-, a Di-, or a Monohalomethyl Moiety. Stereochemical Control Based on Distinctive Electronic and Steric Attributes of C–Cl, C–Br, and C–F BondsJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08443
- [ASAP] Nanopore-Based Single-Biomolecule Interfaces: From Information to KnowledgeJournal of the American Chemical SocietyDOI: 10.1021/jacs.8b11970
- [ASAP] Radical-Induced Hierarchical Self-Assembly Involving Supramolecular Coordination Complexes in Both Solution and Solid StatesJournal of the American Chemical SocietyDOI: 10.1021/jacs.9b08149
- Evaluation of robotic surgery for transoral resection of T1-2 squamous cell carcinoma of the tonsillar fossaPublication date: Available online 24 September 2019Source: European Annals of Otorhinolaryngology, Head and Neck DiseasesAuthor(s): K. Shenouda, F. Rubin, D. Garcia, C. Badoual, P. Bonfils, O. LaccourreyeAbstractGoalTo evaluate transoral robotic surgery (TORS) for isolated previously untreated squamous cell carcinoma (SCC) of the tonsillar fossa classified as T1-2.MethodRetrospective analysis of two cohorts of isolated untreated T1-2 tonsillar f
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