The resolution and classical noise in ghost imaging with a classical thermal light are investigated theoretically. For ghost imaging with a Gaussian Schell model source, the dependences of the resolution and noise on ...The resolution and classical noise in ghost imaging with a classical thermal light are investigated theoretically. For ghost imaging with a Gaussian Schell model source, the dependences of the resolution and noise on the spatial coherence of the source and the aperture in the imaging system are discussed and demonstrated by using numerical simulations. The results show that an incoherent source and a large aperture will lead to a good image quality and small noise.展开更多
The use of radio frequency energy is an established technology for certain oncology therapies. Direct inputs of radio frequency (RF) energy as thermal energy are applied to ablate tumors or catalyze secondary reaction...The use of radio frequency energy is an established technology for certain oncology therapies. Direct inputs of radio frequency (RF) energy as thermal energy are applied to ablate tumors or catalyze secondary reactions in adjunct treatments against certain tumor types. Yet, other applications are being developed which take advantage of properties of RFs that impinge on biological proteins and cells without thermal effects. Here we report a proof-of-concept application of specific, digitally encoded, low power (non-thermal) radio frequency energy in an in vitro preparation of a tubulin polymerization assay. The radio frequency energy signal, designated M2(3), was applied to the tubulin polymerization assay samples during spectrophotometric measurements to assess the effectiveness for enhancing tubulin polymerization. A commercially available taxane (paclitaxel) that promotes tubulin polymerization was used as a control to assess the effectiveness of the M2(3) radio frequency energy signal on tubulin polymerization rates. A low power, specific, digital radio frequency energy signal is capable of promoting tubulin polymerization as effectively as a commercially available taxane.展开更多
基金Project supported by the Shanghai Rising-Star Programme of China, the National Natural Science Foundation of China （Grant No 10404031）, the K.C. Wong Education Foundation （Hong Kong）, and the Research Grants Council of the Hong Kong Government of China （Grant No 604804）.
文摘The resolution and classical noise in ghost imaging with a classical thermal light are investigated theoretically. For ghost imaging with a Gaussian Schell model source, the dependences of the resolution and noise on the spatial coherence of the source and the aperture in the imaging system are discussed and demonstrated by using numerical simulations. The results show that an incoherent source and a large aperture will lead to a good image quality and small noise.
文摘The use of radio frequency energy is an established technology for certain oncology therapies. Direct inputs of radio frequency (RF) energy as thermal energy are applied to ablate tumors or catalyze secondary reactions in adjunct treatments against certain tumor types. Yet, other applications are being developed which take advantage of properties of RFs that impinge on biological proteins and cells without thermal effects. Here we report a proof-of-concept application of specific, digitally encoded, low power (non-thermal) radio frequency energy in an in vitro preparation of a tubulin polymerization assay. The radio frequency energy signal, designated M2(3), was applied to the tubulin polymerization assay samples during spectrophotometric measurements to assess the effectiveness for enhancing tubulin polymerization. A commercially available taxane (paclitaxel) that promotes tubulin polymerization was used as a control to assess the effectiveness of the M2(3) radio frequency energy signal on tubulin polymerization rates. A low power, specific, digital radio frequency energy signal is capable of promoting tubulin polymerization as effectively as a commercially available taxane.
