CMOS image sensors are today challenging the existing Charge Coupled Devices (CCD) in several application fields. Improved architecture and processes have to a large extent overcome early weaknesses of CMOS imagers, namely with respect to noise and sensitivity. Todays " Active Pixel Sensors" are typically based on sub-micron technologies that have been optimized for optical sensing and can riva...

Crossed cerebellar diaschisis (CCD) is well described in the chronic phase of stroke, but few data describe acute CCD and its serial changes after reperfusion. Using positron emission tomography (PET), we studied acute CCD with respect to supratentorial perfusion and outcome measures. In 19 acute stroke patients receiving intravenous thrombolysis (<3 h), 15O-water PET assessed CCD and supratent...

Paracrine and autocrine actions of the insulin-like growth factors (IGFs) are inferred by local expression within the bowel. CCD-18Co cells, IEC-6 cells, and immunoneutralization were used to analyze whether IGFs have direct autocrine or paracrine effects on proliferation of cultured intestinal fibroblasts and epithelial cells. Growth factor expression was analyzed by ribonuclease protection as...

objective: after introduction of digital radiography into dentistry several methods of image acquisition were accessible in the field of dentistry. in many instances it is necessary to digitize analog images. there is no overall acceptable method for image digitization so all different types of images can be comparable. the objective of this study was to compare the diagnostic accuracy of diffe...

Each CCD is a square 4 megapixel device, with 2048 pixels on each side. Photons impinging on the CCD first pass through an image intensifier. The aperture on the intensifier does not quite cover the entire CCD, instead covering only an “Active Region” that is 1388 x 1516 pixels in size. The CIPS instrument will be capable of telemetering to the spacecraft bus the data from the entire CCD or any...

In colony collapse disorder (CCD), honey bee colonies inexplicably lose their workers. CCD has resulted in a loss of 50 to 90% of colonies in beekeeping operations across the United States. The observation that irradiated combs from affected colonies can be repopulated with naive bees suggests that infection may contribute to CCD. We used an unbiased metagenomic approach to survey microflora in...