Time-Pulsed Vacuum and Time-Pulsed Alternating Pressure Chromatography
نویسندگان
چکیده
منابع مشابه
Unified Pulsed Laser Range Finder and Velocimeter using Ultra-Fast Time-To-Digital Converter
In this paper, we present a high accuracy laser range finder and velocimeter using ultra-fast time-to-digital converter (TDC). The system operation is based on the measuring the round-trip time of a narrow laser pulse. A low-dark current high-speed PIN photodiode is used to detect the triggered laser beam and to produce start signal. The pulsed laser diode generates 45W optical power at 30ns du...
متن کاملRise Time of Pulsed Parametric Oscillators
Gain saturation of an Nd-glass amplifier by 1.06-pmlight pulsesis determined by the lifetimes and degeneraciesof thetwo laser states aswell a s by thermalization rates among the com-ponents of the twomultiplets to which thelaserlevels belong.Reportedaremeasurements showing thatalthoughsmall signalgain was the same foramplified micr...
متن کاملTime-domain Beam Shaping of Pulsed Arrays
Pulsed arrays are becoming popular in new Ultra-wideband applications to enhance the robustness of transmitted and received signals in complex environments and to identify the angle of arrival of multiple echoes. A global synthesis technique is here proposed to shape the array field in accordance to a given angle-time mask. The synthesis problem is cast as the inverse Radon transform of a desir...
متن کاملTerahertz pulsed time-domain holography and iterative phase retrieval methods
We present latest results obtained in the scope of imaging methods which allows one to recover spatial phase distribution in the terahertz wave-fields. One of these methods is the terahertz pulse time-domain holography. The second one is the iterative phase retrieval approach, transferred from the visible frequency range.
متن کاملEffects of exposure duration and recovery time during pulsed exposures.
In pulsed toxicant exposures, the concentration, duration, and frequency of pulses can change through time. However, the conventional median lethal concentration (LC50) method cannot adequately predict the effects of pulsed exposure, because it is associated with fixed exposure duration and constant concentration and does not include postexposure (latent) mortality. Many studies that tried to a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Synlett
سال: 2013
ISSN: 0936-5214,1437-2096
DOI: 10.1055/s-0033-1340306