Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"stretcher"”.
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Design and development of an elevating stretcher trolley.
… and development of a new design for an elevating stretcher trolley. The project was sponsored by F.W. Equipment Co., Ltd. of Bradford who required a new design for their existing stretcher trolley that has been on the market for the last ten years.The information search period consisted of the …
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On the theory of the optical stretcher : optics, mechanics, and thermal effects
The optical stretcher (OS) is dual-beam laser trap capable of capturing and deforming micron-sized particles or biological cells. It can be employed to measure cell-mechanical properties and, thus, to monitor physiological changes, such as differentiation, and to diagnose diseases that affect the …
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Hybrid Ray Optics and Continuum Mechanics Modeling of Cell Deformation in the Optical Stretcher
Since the invention of the optical stretcher in 2001, no direct method has been found for measuring the optical stress that produces the observed trapping and stretching of biological cells and other dielectrics. Hence, mathematical and computational models have been developed to calculate the …
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An investigation into determinants of successful rowing performance in terms of body morphology and stretcher position.
… in a single scull, at three differing foot-stretcher positions and body morphology. Six experienced female scullers participated in this secondary experiment. Rowers competing at the Scottish University Indoor Rowing Championships 2007 and 2008 were measured for thirty-nine anthropometric …
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Optical deformability : micromechanics from cell research to biomedicine
… a two-beam fiber-based laser trap, the optical stretcher, which can generate surface forces from 1 pN–1 nN at frequencies ranging from static experiments to several MHz. The feasibility of accurately determining the elastic properties of biological cells with the optical stretcher was …
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Cell compliance: cytoskeletal origin and importance for cellular function.
… be measured with a dual-beam laser trap (optical stretcher). Functional changes, which go hand in hand with changes of the cytoskeleton, also occur during differentiation of stem cells. This suggests monitoring differentiation by the changing compliance of the cells. During the course of my PhD I …
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Assessment of evacuation devices used in South African hospitals
… In the drills, three common devices were used: a stretcher, an evacuation chair, and an evacuation sheet. The performance of male and female teams was then measured by recording how long they took to prepare each device, their horizontal speed, and their vertical speed. A performance evaluation …
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Synchronization In Advanced Optical Communications
… master oscillator, an optical pulse pre-stretcher, a semiconductor optical amplifier (SOA) pulse picker, an extreme pulse stretcher/compressor, cascaded optical amplifiers, and a bulk grating compressor is successfully demonstrated and generates >kW record peak power. A potential …
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Design of bicycle ambulances for Zambia
… a two-wheeled trailer that carries a sheet metal stretcher, and can be towed by common bicycles. The ambulance is fabricated from standard bicycle components and steel stock, such as 25mm round tube that can be easily bent to minimize cuts and welds. A single rider can transport one patient at …
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The development of high power fibre chirped pulse amplification systems
… and residual dispersion from mismatched stretcher/compressor technologies at low energies are investigated.
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Stabilization of an FM active harmonic mode-locked fiber laser at high repetition rates
… ( PI) controller and a piezo fiber stretcher was also developed and optimized. This approach uses a circuit-controlled piezo (PZT) device to physically counteract optical cavity length variations. The optimized circuit-controlled and computer-controlled approaches were compared to …
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The Sled, the Litter, and the Plot: Finding Connections Between Mundane Material Culture From World War II's USS North Carolina
… sea sled, a vertical plotting board, and a stretcher -- showcase elements of construction, technological improvement, and inferred value. Additionally, events and people connect these seemingly unrelated artifacts. Ultimately, mundane artifacts can be related to each other and to stories …
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Fragile nights :
… environmental condition: that it can act as a stretcher and enhancer of insight -- in contrast to light, by which the environment penetrates an attentive mind from without. By implication, if light stimulates the body, dar~ness will in turn stimulate the mind; furthermore, at a given moment, …
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The development of high power, pulsed fiber laser systems and their applications
… compact chirped-fiber-Bragg-grating (CFBG) pulse stretcher that provides both 2nd and 3rd order chirp compensation. Recently published theoretical results have demonstrated that the asymptotic solution for ultrashort pulses in a high gain fiber amplifier is a linearly chirped pulse, which can …
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Equipment for Dying: A Dramatistic Critique of Heroism and the Crises Assaulting Returning Soldiers
… marching home but is instead carried home on a stretcher, wheeled home while wearing a straightjacket, or borne home in a casket”. To accomplish this ambitious task, this dissertation discusses various discourses that speak about heroism and the crises surrounding U.S. soldiers – the cinematic …
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Homeostasis and volume regulation in the Plasmodium falciparum infected red blood cell
… red cells were studied using a novel optical stretcher device, which enabled individual cells to be trapped and manipulated optomechanically in microfluidic channels. Combined, these methods offered a unique insight into the homeostatic and rheological behaviour of malaria-infected red cells. …
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The dynamics and optimization of the radiation of a femtosecond diode pumped Yb:KGW laser /
… the scale of pulse stretching in the optical stretcher depends only on the beam size and the diffraction grating grooves density and does not depend on the bandwidth of the pulse. In order to optimized the compression of amplified pulses we have also proposed and experimentally tested a new …
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Modified Delphi study to determine the components of a Medical Cache required for local or international medical deployment after a major incident or disaster
… electrocardiogram with extra-long leads; scoop stretcher; stokes basket and a KEO. Other items such as the Arterial Blood Gas (ABG) machine and the Ultrasound machine did not achieve consensus. Disposable equipment like endotracheal tubes; bandages; intravenous administration sets and …
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Effect of Cell-Substrate Interactions on Epithelial Cell Mechanics
… force microscopy and a microfluidic optical stretcher. We found that adherent cells stiffen and suspended cells soften with the expression of constitutively active Ras. The effect on adherent cells was reversed when contractility was inhibited with the ROCK inhibitor Y-27632, resulting in …
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Simulating hospital evacuation
… four commonly used movement assistance devices: stretcher, carry chair, evacuation chair and rescue sheet are presented and analysed. From this, performance results are calculated for both male and female assist teams that include device preparation time, horizontal speeds, vertical speeds and …
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