搜索结果: 16-30 共查到“理学 fluorescence”相关记录86条 . 查询时间(0.103 秒)
Fluorescence Efficiency of Surface Seawater as a Function of Excitation and Emission Wavelength
Excitation and Emission Wavelength Surface Seawater
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2015/8/19
Fluorescence of natural waters has often been employed in attempts to quantify dissolved chromophores. However, it has not always been recognized that the intensity of fluorescence obtained from a giv...
Resolution of Biological Microstructure Through In Situ Fluorescence Emission Spectra: An Oceanographic Application Using Optical Fibers
Situ Fluorescence Emission Spectra Biological Microstructure
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2015/8/19
One of the challenges we face as oceanographers is the wide range of spatial and temporal scales over which we must measure the physical, biological, and chemical properties and processes in the ocean...
The Effects of Refractive Index Mismatch on Multiphoton Fluorescence Excitation Microscopy of Biological Tissue
scattering spherical aberration refractive index mismatch two-photon microscopy multiphoton fluorescence excitation microscopy
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2015/5/21
Introduction: Multiphoton fluorescence excitation microscopy (MPM) is an invaluable tool for studying processes in tissue in live animals by enabling biologists to view tissues up to hundreds of micro...
The SOS response in Escherichia coli: Single cell analysis using fluorescence microscopy
Biological sciences DNA repair RecA SOS response
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2015/1/28
During the course of DNA replication, replication forks often stall or collapse as they proceed from oriC to the terminus due to housekeeping types of DNA damage or proteins bound to DNA. If the DNA i...
Ly alpha EMISSION FROM COSMIC STRUCTURE. I. FLUORESCENCE
temporal light curves quasar radiation
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2014/12/22
We present predictions for the fluorescent Lyα emission signature arising from photoionized, optically thick structures in smoothed particle hydrodynamic cosmological simulations of a ΛCDM universe us...
Effects of temperature and irradiance on a benthic microalgal community: A combined two-dimensional oxygen and fluorescence imaging approach
benthic Two-dimensional oxygen fluorescence
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2014/10/16
The effects of temperature and light on both oxygen (O2) production and gross photosynthesis were resolved in
a benthic microalgal community by combining two-dimensional (2D) imaging of O2 and variab...
Characteristic spectral features of the polarized fluorescence of human breast cancer in the wavelet domain
Florescence Spectroscopy Wavelet Transform Biomedical Optics Breast Cancer
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2012/5/17
Wavelet transform of polarized fluorescence spectra of human breast tissues is found to localize spectral features that can reliably differentiate normal and malignant tissue types. The intensity diff...
Lognormal Distribution of Single Molecule Fluorescence Bursts in Micro/Nano-Fluidic Channels
Lognormal Distribution Single Molecule Fluorescence Burst Micro/Nano-Fluidic Channels
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2011/8/5
Abstract: The width and shape of photon burst histograms pose significant limitations to the identification of single molecules in micro/nano-fluidic channels, and the nature of these histograms is no...
Intense Internal and External Fluorescence as Solar Cells Approach the Shockley-Queisser Efficiency Limit
Shockley-Queisser Solar Cells
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2011/8/31
Absorbed sunlight in a solar cell produces electrons and holes. But, at the open circuit condition, the carriers have no place to go. They build up in density and, ideally, they emit external fluoresc...
Analysis of the near-resonant fluorescence spectra of a single rubidium atom localized in a three-dimensional optical lattice
Analysis single rubidium atom localized three-dimensional optical lattice
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2010/11/9
Supplementary information is presented on the recent work by W. Kim et al. on the matter-wave-tunneling-induced broadening in the near-resonant spectra of a single rubidium atom localized in a three-...
Fluorescence interferometry
Fluorescence interferometry
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2010/10/29
We describe an interferometer based on fluorescent emission of radiation of two qubits in quasi-one-dimensional modes. Such a system can be readily realized with dipole emitters near conducting surfac...
Measurements and comparison of primary biological aerosol above and below a tropical forest canopy using a dual channel fluorescence spectrometer
primary biological aerosol a tropical forest canopy a dual channel fluorescence spectrometer
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2010/8/13
Aerosol particle size distributions were measured below and above a tropical rainforest canopy in Borneo, Malaysia, in June/July 2008 using the WIBS-3: a single particle dual channel fluorescence spec...
Fluorescence spectroscopy opens new windows into dissolved organic matter dynamics in freshwater ecosystems: A review
dissolved organic matter dynamics A review
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2014/4/17
The biochemical composition of dissolved organic matter (DOM) strongly influences its biogeochemical role in
freshwater ecosystems, yet DOM composition measurements are not routinely incorporated int...
L-Cysteine-capped CdTe Quantum Dots as a Fluorescence Probe for Determination of Cardiolipin
L-Cysteine-capped Determination Cardiolipin
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2010/9/15
This paper described the investigation of surface-modified quantum dots (QDs) as a fluorescence probe for the detection of cardiolipin. A single-step method for preparation of non-toxic and photo-stab...
X-ray Fluorescence Analysis of Cr6+ Component in Mixtures of Cr2O3 and K2CrO4
X-ray Fluorescence Analysis Cr6+ Component in Mixtures of Cr2O3 and K2CrO4
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2010/9/17
X-ray fluorescence analysis using Cr Kα spectra was applied to the determination of the mixing ratio of Cr6+ to (Cr6+ + Cr3+) in several mixtures of K2CrO4 and Cr2O3. Because the powder of K2CrO4 cont...