0000000000516273

AUTHOR

Wei Ji

0000-0002-1473-5222

showing 3 related works from this author

Programmable assembly of peptide amphiphile via noncovalent-to-covalent bond conversion

2017

Controlling the number of monomers in a supramolecular polymer has been a great challenge in programmable self-assembly of organic molecules. One approach has been to make use of frustrated growth of the supramolecular assembly by tuning the balance of attractive and repulsive intermolecular forces. We report here on the use of covalent bond formation among monomers, compensating for intermolecular electrostatic repulsion, as a mechanism to control the length of a supramolecular nanofiber formed by self-assembly of peptide amphiphiles. Circular dichroism spectroscopy in combination with dynamic light scattering, size-exclusion chromatography, and transmittance electron microscope analyses r…

Mechanical bondStereochemistryChemistry MultidisciplinaryStatic ElectricitySupramolecular chemistry02 engineering and technology010402 general chemistryPhotochemistryNANOSTRUCTURES01 natural sciencesBiochemistryArticleCatalysisSupramolecular assemblySurface-Active AgentsColloid and Surface ChemistryMicroscopy Electron TransmissionSYSTEMSPeptide amphiphileDRUG-DELIVERYCONTROLLED LENGTHchemistry.chemical_classificationScience & TechnologyMICELLESMolecular StructureChemistryHydrogen bondIntermolecular forceHydrogen BondingGeneral Chemistry021001 nanoscience & nanotechnology0104 chemical sciencesSUPRAMOLECULAR POLYMERSSupramolecular polymersChemistryPOLYMERIZATIONCovalent bondPhysical SciencesGROWTHPeptides0210 nano-technologyNANOFIBERS
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Global-Scale Evaluation of Roughness Effects on C-Band AMSR-E Observations

2015

Quantifying roughness effects on ground surface emissivity is an important step in obtaining high-quality soil moisture products from large-scale passive microwave sensors. In this study, we used a semi-empirical method to evaluate roughness effects (parameterized here by the parameter) on a global scale from AMSR-E (Advanced Microwave Scanning Radiometer for EOS) observations. AMSR-E brightness temperatures at 6.9 GHz obtained from January 2009 to September 2011, together with estimations of soil moisture from the SMOS (Soil Moisture and Ocean Salinity) L3 products and of soil temperature from ECMWF’s (European Centre for Medium-range Weather Forecasting) were used as inputs in a retrieval…

010504 meteorology & atmospheric sciencestélédétectionScience0211 other engineering and technologiesWeather forecasting[SDU.STU]Sciences of the Universe [physics]/Earth SciencesElectromagnétismesoil surface roughness02 engineering and technologySurface finishcomputer.software_genredonnée satellite01 natural sciencesSciences de la TerreNormalized Difference Vegetation Indexsoil moisture;soil surface roughness;AMSR-EElectromagnetismEmissivitySurface roughnessTraitement du signal et de l'image14. Life underwaterWater content021101 geological & geomatics engineering0105 earth and related environmental sciencesRemote sensingRadiometercapteur smosQSignal and Image processingradiométrie microondesVegetationAMSR-E15. Life on land[SPI.ELEC]Engineering Sciences [physics]/ElectromagnetismEarth SciencesGeneral Earth and Planetary SciencesEnvironmental sciencesoil moisturecomputer[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processingRemote Sensing
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Search for exotic spin-dependent interactions with a spin-based amplifier

2021

Description

PhysicsParticle physicsQuantum PhysicsMultidisciplinaryPhysicsPhysics beyond the Standard ModelAmplifier500FOS: Physical sciencesSciAdv r-articles01 natural sciences010305 fluids & plasmas0103 physical sciencesPhysical and Materials Sciencesddc:500Quantum Physics (quant-ph)010306 general physicsResearch ArticleSpin-½
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