Results 51 to 60 of about 828,607 (304)

Measuring the translational and rotational velocity of particles in helical motion using structured light [PDF]

open access: yes, 2014
We measure the rotational and translational velocity components of particles moving in helical motion using the frequency shift they induced to the structured light beam illuminating them.
Belmonte, Aniceto   +3 more
core   +3 more sources

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

open access: yesMolecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen   +11 more
wiley   +1 more source

Optical phase‐locking of two longitudinal modes of a dual‐mode laser for millimetre‐wave signal generation

open access: yesElectronics Letters, 2016
Phase‐locking of two longitudinal oscillating modes of a dual‐mode microchip laser that has 101 GHz longitudinal‐mode spacing has been successfully demonstrated by using electronic negative‐feedback control.
M. Hyodo   +5 more
doaj   +1 more source

Experimental research on dynamic vibration absorber with negative stiffness for longitudinal vibration control of propulsion shafting system

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesIn order to control the first longitudinal vibration mode of propulsion shafting systems, a dynamic vibration absorber with disc spring negative stiffness is proposed and its experimental verification carried out.
Xiuchang HUANG   +3 more
doaj   +1 more source

Electron-vibron coupling in suspended nanotubes

open access: yes, 2005
We consider the electron-vibron coupling in suspended nanotube quantum dots. Modelling the tube as an elastic medium, we study the possible coupling mechanism for exciting the stretching mode in a single-electron-transistor setup.
Flensberg, Karsten
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

Single Longitudinal Mode Optofluidic Microring Laser Based on a Hollow-Core Microstructured Optical Fiber

open access: yesIEEE Photonics Journal, 2017
A single longitudinal mode microring dye laser based on a simplified hollow-core microstructured optical fiber (SHMOF) is proposed and demonstrated. The dye laser uses a submicron thickness silica microring embedded in the SHMOF as resonator and has the ...
Jie Yu   +6 more
doaj   +1 more source

Multiphonon longitudinal wobbling in 127Xe

open access: yesPhysics Letters B, 2020
A family of four odd parity bands in 127Xe has been investigated via in-beam γ-ray spectroscopy and conclusive evidence for the first and second phonon longitudinal wobbling excitations has been found.
S. Chakraborty   +15 more
doaj   +1 more source

Longitudinal symmetric coupled bunch modes [PDF]

open access: yes, 1980
The theory of longitudinal coupled bunch instabilities is discussed. Although some of the results included are not new, it is useful to summarize them here in a unified fashion.
openaire   +2 more sources

Multiplexed multi-longitudinal mode fiber laser sensor

open access: yesOptics Express, 2014
A multiplexed multi-longitudinal mode fiber laser sensor system is proposed and demonstrated. By incorporating two matched wavelength division multiplexers (WDMs) and a semiconductor optical amplifier (SOA) into a fiber laser cavity, multiwavelength oscillation is established.
Long, Huang   +4 more
openaire   +2 more sources

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