نتایج جستجو برای: pumping air

تعداد نتایج: 218832  

Journal: :Optics express 2004
Pierre-Alain Champert Vincent Couderc Philippe Leproux Sébastien Février Vincent Tombelaine Laurent Labonté Philippe Roy Claude Froehly Philippe Nérin

We report on the experimental demonstration of a white-light supercontinuum generation in normally dispersive singlemode air-silica microstructured fiber. We demonstrate that the simultaneous excitation of the microstuctured fiber in its normal and anomalous dispersion regimes using the fundamental and second harmonic signals of a passively Q-switched microchip laser leads to a homogeneous supe...

Journal: :Analytical and bioanalytical chemistry 2009
Y B Gianchandani S A Wright C K Eun C G Wilson B Mitra

This paper describes the use of microdischarges as transducing elements in sensors and detectors. Chemical and physical sensing of gases, chemical sensing of liquids, and radiation detection are described. These applications are explored from the perspective of their use in portable microsystems, with emphasis on compactness, power consumption, the ability to operate at or near atmospheric pres...

2014
Won Jong Lee Ji Hwan Jeong Wonjong LEE Ji-Hwan JEONG

Fin-tube heat exchangers are widely used in air-conditioners and heat pumps, which are constructed with a lot of tubes. Refrigerant circuit of heat exchanger with numerous pipe can be constructed by many methods. Refrigerant circuit design is usually determined designer’s experience and case by case test without guides. The number of path affects largely on heat exchanger performance. In this p...

Journal: :Cement and Concrete Research 2022

The long-term performance of 3D printed concrete structures involves various durability issues, and in this study, we are focusing on frost damage. This can be a serious issue cold places like Switzerland may particularly problematic for owing to the likely presence joints. printing often processing steps such as pumping, set acceleration extrusion, present work, consider effect these condition...

Journal: :Optics express 2002
Andrew Kowalevicz Tony Ko Ingmar Hartl James Fujimoto Markus Pollnau René Salathé

A superluminescent Ti:Al2O(3) crystal is demonstrated as a light source for ultrahigh resolution optical coherence tomography (OCT). Single spatial mode, fiber coupled output powers of ~40 microW can be generated with 138 nm bandwidth using a 5 W frequency doubled, diode pumped laser, pumping a thin Ti:Al2O(3) crystal. Ultrahigh resolution OCT imaging is demonstrated with 2.2 microm axial resol...

Journal: :Arhiv za higijenu rada i toksikologiju 2016
Marko Šoštarić Branko Petrinec Dinko Babić

This paper tackles the issue of interpreting the number of airborne particles adsorbed on a filter through which a certain volume of sampled air has been pumped. This number is equal to the product of the pumped volume and particle concentration in air, but only if the concentration is constant over time and if there is no substance decomposition on the filter during sampling. If this is not th...

2016
Brian W. Strehlow Damien Jorgensen Nicole S. Webster Mari-Carmen Pineda Alan Duckworth

A digital, four-channel thermistor flowmeter integrated with time-lapse cameras was developed as an experimental tool for measuring pumping rates in marine sponges, particularly those with small excurrent openings (oscula). Combining flowmeters with time-lapse imagery yielded valuable insights into the contractile behaviour of oscula in Cliona orientalis. Osculum cross-sectional area (OSA) was ...

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