نتایج جستجو برای: microwave technique

تعداد نتایج: 658606  

Journal: :Physical review letters 2011
Tom Close Femi Fadugba Simon C Benjamin Joseph Fitzsimons Brendon W Lovett

Electron and nuclear spins have been employed in many of the early demonstrations of quantum technology. However, applications in real world quantum technology are limited by the difficulty of measuring single spins. Here we show that it is possible to rapidly and robustly amplify a spin state using a lattice of ancillary spins. The model we employ corresponds to an extremely simple experimenta...

2015
Peter R. Herczfeld

My long-term goal concerns component development for a novel hybrid lidar-radar system for underwater surveillance. Preliminary ocean experiments of the hybrid lidar-radar system have confirmed the potential of microwave-modulated pulsed lidar to be a superior detection mechanism for underwater surveillance [1]. The next step in the evolution of this novel technique is the improvement of the ke...

2016
Nishone Thompson Zainab Boone-Kukoyi Raquel Shortt Carisse Lansiquot Bridgit Kioko Enock Bonyi Salih Toker Birol Ozturk Kadir Aslan

Gout is caused by the overproduction of uric acid and the inefficient metabolism of dietary purines in humans. Current treatments of gout, which include anti-inflammatory drugs, cyclooxygenase-2 inhibitors, and systemic glucocorticoids, have harmful side-effects. Our research laboratory has recently introduced an innovative approach for the decrystallization of biological and chemical crystals ...

2010
A. R. Hajipour

Oximes are highly crystalline materials and oximation is very efficient method for characterization and purification of carbonyl compounds. These compounds not only represent a useful series of derivatives of carbonyl compounds but also may be used as intermediates for the preparation of amides by the Beckmann rearrangement [1], nitrones [2], hydroximinoyl chlorides, nitrile oxide [3] and chi a...

2017
Declan O'Loughlin Bárbara L. Oliveira Muhammad A. Elahi Martin Glavin Edward Jones Milica Popovic Martin O'Halloran

Inaccurate estimation of average dielectric properties can have a tangible impact on microwave radar-based breast images. Despite this, recent patient imaging studies have used a fixed estimate although this is known to vary from patient to patient. Parameter search algorithms are a promising technique for estimating the average dielectric properties from the reconstructed microwave images them...

2013
D. Hou X. P. Xie Y. L. Zhang J. T. Wu Z. Y. Chen J. Y. Zhao

Optical frequency combs (OFCs), based on mode-locked lasers (MLLs), have attracted considerable attention in many fields over recent years. Among the applications of OFCs, one of the most challenging works is the extraction of a highly stable microwave with low phase noise. Many synchronisation schemes have been exploited to synchronise an electronic oscillator with the pulse train from a MLL, ...

2003
Arthur Kosowsky

The cosmic microwave background is now fulfilling its promise of determining the basic cosmological parameters describing our Universe. Future study of the microwave background will mostly be directed towards two basic questions: a complete characterization of the initial perturbations, and probes of the nonlinear evolution of structure in the Universe. The basic scientific issues in both of th...

Journal: :Molecules 2011
Ehsan Karimi Hawa Z E Jaafar

Microwave extraction of phytochemicals from medicinal plant materials has generated tremendous research interest and shown great potential. This research highlights the importance of microwave extraction in the analysis of flavonoids, isoflavonoid and phenolics and the antioxidant properties of extracts from three varieties of the Malaysian medicinal herb, Labisia pumila Benth. High and fast ex...

Journal: :Journal of combinatorial chemistry 2010
Ya-Shan Hsiao Gorakh S Yellol Li-Hsun Chen Chung-Ming Sun

A new multidisciplinary synthetic approach comprising polymer-support synthesis, microwave-assisted synthesis, and multicomponent condensation facilitates synthesis of triaza-fluorenes library with a set of advantages such as rapid process, simple purification, and structural diversity in one shot. Microwave-assisted multistep synthetic protocol was used to construct the benzimidazole ring on s...

2016
Shuangli Liu Zhiqin Zhao Xiaozhang Zhu Zhanliang Wang Jian Song Bingwen Wang Yubin Gong Zaiping Nie Qing-Huo Liu

Microwave induced thermo-acoustic tomography (MITAT) is a developing technique for biomedical applications, especially for early breast cancer detection. In this paper, impacts of short microwave pulse on thermo-acoustic (TA) signals are analyzed and verified through some experimental comparisons. In these experiments, short microwave pulses with widths of 10 ns and 500 ns are employed as radia...

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