Author: Bin Wang

N-Cinnamoyltetraketide Derivatives from the Leaves of Toussaintia orientalis

2015

Seven N-cinnamoyltetraketides (1−7), including the new Ztoussaintine E (2), toussaintine F (6), and toussaintine G (7), were isolated from the methanol extract of the leaves of Toussaintia orientalis using column chromatography and HPLC. The configurations of E-toussaintine E (1) and toussaintines A (3) and D (5) are revised based on single-crystal X-ray diffraction data from racemic crystals. Both the crude methanol extract and the isolated constituents exhibit antimycobacterial activities (MIC 83.3−107.7 μM) against the H37Rv strain of Mycobacterium tuberculosis. Compounds 1, 3, 4, and 5 are cytotoxic (ED50 15.3−105.7 μM) against the MDA-MB-231 triple negative aggressive breast cancer cel…

kemiaToussaintia orientalismedicine.drug_classAntitubercular AgentsPharmaceutical ScienceAnnonaceaeMicrobial Sensitivity TestsAntimycobacterialchemistry01 natural sciencesHigh-performance liquid chromatographyTanzaniaAnalytical ChemistryMycobacterium tuberculosischemistry.chemical_compoundColumn chromatographyDrug DiscoverymedicineHumansTriple negativeNuclear Magnetic Resonance Biomolecularta116PharmacologyChromatographybiologyStrain (chemistry)Molecular Structure010405 organic chemistryCyclohexanonesOrganic ChemistryMycobacterium tuberculosisbiology.organism_classificationtoussaintia orientalis0104 chemical sciences3. Good healthPlant Leavesn-cinnamoyltetraketide010404 medicinal & biomolecular chemistryComplementary and alternative medicinechemistryCinnamatesMolecular MedicineFemaleMethanolDrug Screening Assays AntitumorJournal of Natural Products

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Observation of the doubly radiative decay η′→γγπ0

2017

Based on a sample of 1.31 billion J/psi events collected with the BESIII detector, we report the study of the doubly radiative decay eta' -> gamma gamma pi(0) for the first time, where the eta' meson is produced via the J/psi -> gamma eta' decay. The branching fraction of eta' -> gamma gamma pi(0) inclusive decay is measured to be B(eta' -> gamma gamma pi(0))(Incl) = (3.20 +/- 0.07(stat) +/- 0.23(sys)) x 10(-3), while the branching fractions of the dominant process eta' -> gamma omega and the non-resonant component are determined to be B(eta' -> gamma omega) x B(omega -> gamma pi(0)) = (23.7 +/- 1.4(stat) +/- 1.8(sys)) x 10(-4) and B(eta' -> gamma gamma pi(0))(NR) = (6.16 +/- 0.64(stat) +/-…

PhysicsMeson010308 nuclear & particles physicsBranching fractionAstrophysics::High Energy Astrophysical PhenomenaElectron–positron annihilationRadiative decay01 natural sciencesOmegaGamma gammaNuclear physics0103 physical sciencesPiHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsPhysical Review D

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Flavonoids from Erythrina schliebenii

2017

Prenylated and O-methylflavonoids including one new pterocarpan (1), three new isoflavones (2–4), and nineteen known natural products (5–23) were isolated and identified from the root, stem bark, and leaf extracts of Erythrina schliebenii. The crude extracts and their constituents were evaluated for antitubercular activity against Mycobacterium tuberculosis (H37Rv strain), showing MICs of 32–64 μg mL–1 and 36.9–101.8 μM, respectively. Evaluation of their toxicity against the aggressive human breast cancer cell line MDA-MB-231 indicated EC50 values of 13.0–290.6 μM (pure compounds) and 38.3 to >100 μg mL–1 (crude extracts).

Antitubercular AgentsPharmaceutical ScienceMicrobial Sensitivity TestsPlant RootsTanzania01 natural sciencesErythrina schliebeniiAnalytical ChemistryMycobacterium tuberculosischemistry.chemical_compoundDrug DiscoveryBotanyHumansta116Nuclear Magnetic Resonance BiomolecularErythrinaEC50FlavonoidsPharmacologyStem barkMolecular StructureTraditional medicinebiology010405 organic chemistryOrganic ChemistryErythrina schliebeniiPterocarpanMycobacterium tuberculosisIsoflavonesbiology.organism_classification0104 chemical sciences3. Good health010404 medicinal & biomolecular chemistryComplementary and alternative medicinechemistryToxicityPlant BarkMolecular MedicineDrug Screening Assays AntitumorCancer cell linesJournal of Natural Products

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Multi-Kernel Implicit Curve Evolution for Selected Texture Regions Segmentation in VHR Satellite Images

2014

Very high resolution (VHR) satellite images provide a mass of detailed information which can be used for urban planning, mapping, security issues, or environmental monitoring. Nevertheless, the processing of this kind of image is timeconsuming, and extracting the needed information from among the huge quantity of data is a real challenge. For some applications such as natural disaster prevention and monitoring (typhoon, flood, bushfire, etc.), the use of fast and effective processing methods is demanded. Furthermore, such methods should be selective in order to extract only the information required to allow an efficient interpretation. For this purpose, we propose a texture region segmentat…

[INFO.INFO-AR]Computer Science [cs]/Hardware Architecture [cs.AR][INFO.INFO-AR] Computer Science [cs]/Hardware Architecture [cs.AR]Pixelbusiness.industryComputer science0211 other engineering and technologiesGraphics processing unitBoundary (topology)Scale-space segmentation02 engineering and technologyImage segmentationFuzzy logicImage texture11. Sustainability0202 electrical engineering electronic engineering information engineeringGeneral Earth and Planetary Sciences020201 artificial intelligence & image processingComputer visionSegmentation[ INFO.INFO-AR ] Computer Science [cs]/Hardware Architecture [cs.AR]Artificial intelligenceElectrical and Electronic EngineeringbusinessComputingMilieux_MISCELLANEOUS021101 geological & geomatics engineering

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5th International Symposium on Focused Ultrasound

2016

Introduction Breast fibroadenomata (FAD) are benign lesions which occur in about 10 % of all women. Diagnosis is made by triple assessment (physical examination, imaging and/or histopathology/cytology). For a definitive diagnosis of FAD, the treatment is conservative unless the patient is symptomatic. For symptomatic patients, the lumps can be surgically excised or removed interventionally by vacuum-assisted mammotomy (VAM). Ablative techniques like high-intensity focused ultrasound (HIFU), cryo-ablation and laser ablation have also been used for the treatment of FAD, providing a minimally invasive treatment without scarring or poor cosmesis. This review summarises current trials using mini…

lcsh:Medical physics. Medical radiology. Nuclear medicineFibroadenomataCryo-ablationHigh-intensity focused ultrasoundAblative techniqueslcsh:R895-920ReviewMeeting AbstractsLaser ablationJournal of Therapeutic Ultrasound

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