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low index contrast

Subwavelength imaging with materials of in principle arbitrarily low index contrast

Subwavelength imaging with materials of in principle arbitrarily low index contrast

... In a previous paper [11], we implemented Maxwell’s fish eye for microwaves and observed subwavelength imaging. In this paper, we demonstrate an idea [25] for a modified fish-eye mirror that requires, in principle, an ...

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Low insertion loss modulator based on a vertically coupled photonic crystal resonator

Low insertion loss modulator based on a vertically coupled photonic crystal resonator

... Here, we demonstrate the principle of a much simpler yet more powerful system. Our design is based on a low index contrast bus waveguide (e.g. Silicon Oxynitride) vertically coupled to multiple ...

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Spatial resolution and refractive index contrast of resonant photonic crystal surfaces for biosensing

Spatial resolution and refractive index contrast of resonant photonic crystal surfaces for biosensing

... refractive index contrast ...refractive index contrasts show that the spatial resolution of our device reduces with reduced contrast, which is an important consideration in biosensing, where ...

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Effect of glycemic index and carbohydrate intake on kidney function in healthy adults

Effect of glycemic index and carbohydrate intake on kidney function in healthy adults

... glycemic index (GI), reducing the proportion of carbohydrates (%carb), or reducing both GI and %carb on: (A) creatinine (mg/dL) and (B) creatinine-based estimated glomerular filtration rate (eGFRcreat) (mL/min/ ...

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Relations among the edge detour polynomials in nanotubes

Relations among the edge detour polynomials in nanotubes

... Among the topological indices, the Wiener number is the oldest and probably the most important one [1]. The Wiener index, a distance-based invariant, was introduced by H. Wiener about 60 years ago to demonstrate ...

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Cerebral CTA with Low Tube Voltage and Low Contrast Material Volume for Detection of Intracranial Aneurysms

Cerebral CTA with Low Tube Voltage and Low Contrast Material Volume for Detection of Intracranial Aneurysms

... double low-dose cerebral CTA (80-kVp tube voltage and 30-mL contrast agent) protocol in a relatively large group of patients, with a 73% reduction in the effective radiation ...double low-dose CTA ...

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The Significance of Pulmonary Petechiae in Crib Death

The Significance of Pulmonary Petechiae in Crib Death

... The low fre- quency of petechiae in this group is in contrast to the prevalence of petechiae in infants dying of crib death, and in contrast to the rats dying of hy[r] ...

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An Automatic Text Region Positioning Method for the Low Contrast Image

An Automatic Text Region Positioning Method for the Low Contrast Image

... the low-contrast images we choose have similar color between character and background, meanwhile, the luminance in- formation can get a better result than colorful information for further processing, so, we ...

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Enhanced Multi-Resolution Satellite Image Registration and Fusion using Average Principal Component Analysis

Enhanced Multi-Resolution Satellite Image Registration and Fusion using Average Principal Component Analysis

... Several types of pyramid decompositions are Laplacian pyramid, ratio-of-low-pass pyramid and gradient pyramid. After obtaining the resultant fused image the performance evaluation of the images was carried out ...

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Plastic Optical Fiber Coupler with High Index Contrast Waveguide Taper

Plastic Optical Fiber Coupler with High Index Contrast Waveguide Taper

... for low attenuation Y-branch coupler, a small splitting angle will be ...with low radiation loss, a high refractive index contrast system will be required ...

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coronary angiography using an ultra-low contrast media

coronary angiography using an ultra-low contrast media

... and contrast enhance- ment [5, ...optimized low contrast protocols with ultra-low tube voltages (70 kV) in non-obese patients have not been ...

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Enhanced motion after effects in migraine are related to contrast sensitivity: implications for models of differences in precortical/cortical function

Enhanced motion after effects in migraine are related to contrast sensitivity: implications for models of differences in precortical/cortical function

... adaptation contrast or with decreasing test display contrast, that is, it was maximal for high contrast adapting gratings paired with low contrast test ...for low contrast ...

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Contrast-Induced Nephropathy Among Patients Undergoing Cardiac Catheterization

Contrast-Induced Nephropathy Among Patients Undergoing Cardiac Catheterization

... to contrast agent, less than one third of patients will develop residual renal impairment and dialysis is required in less than 1% of ...of contrast agent may play a role in the development of CIN ...

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THE STUDY OF IMAGE DETAIL ENHANCEMENT TECHNIQUES Seema, Er. Harshdeep Trehan, Er. Varinderjit Kaur (HOD, CSE) , Dr. Naveen Dhillon (Principal)

THE STUDY OF IMAGE DETAIL ENHANCEMENT TECHNIQUES Seema, Er. Harshdeep Trehan, Er. Varinderjit Kaur (HOD, CSE) , Dr. Naveen Dhillon (Principal)

... image super-resolution and enhancement algorithm using local fractal analysis. Analysis is provided around the relation and difference on the list of proposed approach and various other advanced interpolation methods. ...

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Transfer index of MR relaxation enhancer: a quantitative evaluation of MR contrast enhancement

Transfer index of MR relaxation enhancer: a quantitative evaluation of MR contrast enhancement

... To clarify the effects of Gd-DTPA on biological water, we examined the effects of the compound on spin-lattice relaxation rate with various concentrations of gelatin solutions.. The resu[r] ...

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Spatial resolution and refractive index contrast of resonant photonic crystal surfaces for biosensing

Spatial resolution and refractive index contrast of resonant photonic crystal surfaces for biosensing

... refractive index difference that can be imaged de- pends on the spectral linewidth of the illumination source; a narrower source allows one to per- form a finer sweep of the wavelength during acquisition of the ...

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AN IMPROVED OBLCAE ALGORITHM TO ENHANCE LOW CONTRAST IMAGES

AN IMPROVED OBLCAE ALGORITHM TO ENHANCE LOW CONTRAST IMAGES

... [11] Hitam, M. S., W. N. J. H. W. Yussof, E. A. Awalludin, and Z. Bachok. "Mixture contrast limited adaptive histogram equalization for underwater image enhancement." In Computer Applications Technology ...

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Full-vectorial study of light and sound interactions in low and high index contrast silica waveguides

Full-vectorial study of light and sound interactions in low and high index contrast silica waveguides

... Oct.]. Because the guided light and the evanescent field see the outer surface, thus the guided light can shake the waveguide by the process of electrostriction that generates the surface acoustic waves (SAW). Thus the ...

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A Novel Full Reference-Image Quality Assessment for Global and Local Parameters Perception using SC-QI and SC-DM

A Novel Full Reference-Image Quality Assessment for Global and Local Parameters Perception using SC-QI and SC-DM

... Image quality assessment is one of the challenging field of digital image processing system. Image quality assessment has been of major importance for several domains of the industry of image as for instance restoration ...

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Quantitative low mechanical index contrast-enhanced endoscopic ultrasound for the differential diagnosis of chronic pseudotumoral pancreatitis and pancreatic cancer

Quantitative low mechanical index contrast-enhanced endoscopic ultrasound for the differential diagnosis of chronic pseudotumoral pancreatitis and pancreatic cancer

... micro-bubble contrast agents such as Sonovue showed superior safety profiles to CT or MRI contrast agents ...relatively low costs and virtually non-existing contraindi- cations makes them extremely ...

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