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Speckle degrades the quality of optical coherence tomography (OCT) images and impedes their visual interpretation. Current hardware methods for speckle suppression necessitate difficult hardware modifications. As a result, algorithmic approaches for speckle suppression generally lack validation or training with physically meaningful ground truth.
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From the Office of the Chief Medical Examiner, Farmington, CT.
A common treatment for venous thromboembolic disease in patients with contraindications to anticoagulation includes placement of an inferior vena cava (IVC) filter. Temporary filters are available to avoid the risk of long-term permanent placement. A woman in her 60s with a history of uterine serous carcinoma presented to the emergency department with cardiac arrest following elective attempted IVC filter removal.
View Article and Find Full Text PDFRetrieving a file binder from a bookshelf using pseudo-curved trajectory generation for a foldable robotic hand.
Sci Rep
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Department, National Institute of Technology, Toyama college, 13 Hongouchou, Toyama, 939-8630, Toyama, Japan.
Human-assistive robots need to perform trajectory making for and control of a robotic hand along the many rotating mechanisms in our living spaces. If such trajectory control can be performed without high-cost sensors, certainly a significant cost reduction in building the robot will be achieved. This paper describes a method of retrieving a file binder by generating a pseudo-curved trajectory for tilting it using a simple system.
View Article and Find Full Text PDFProfile measurements of structures with a high aspect ratio and subwavelength features (HARSW) can be achieved using transmission electron microscopy and tilted scanning electron microscopy. Although electron microscopy can provide accurate HARSW measurements, it is laborious and destructive. In this paper, nondestructive and labor-saving methods were proposed to measure the dimensions of HARSW structures.
View Article and Find Full Text PDFWhat we believe to be a novel low-cost broadband continuous-wave water vapor differential absorption lidar (CW-DIAL) technique has been proposed and implemented by combing the Scheimpflug principle and the differential absorption method. The broadband CW-DIAL technique utilizes an 830-nm high-power multimode laser diode with 3-W output power as a tunable light source and a CMOS image sensor tilted at 45° as the detector. A retrieval algorithm dedicated for the broadband CW-DIAL technique has been developed to obtain range-resolved water vapor concentration from the DIAL signal.
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