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.
Results
Showing 1 to 20 of 26 for “"testing devices."”.
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3D printing in Clinical Diagnostics: A Versatile Tool to Develop Testing Devices for the Diagnosis of Infectious Diseases
… the technology to produce brand-new medical devices and surgical instruments. 3DP allows for a fast feedback loop which accelerates design development; designers and manufacturers can rely on the use of early 3D printed parts to support clinical trials or early commercialization while the …
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Design and implementation of nanoscale fiber mechanical testing apparatus
… industry demands higher resolution mechanical testing devices, capable of working with nanoscale fibers. A new device has been developed to perform single-axis tensile tests on fibers with diameter ranging from 50 nm to 10 [micro]m. The device is capable of performing simple extension tests to …
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Mechanical testing of solid materials at the micro-scale
… versatile and yet simple micro-scale mechanical testing devices. This thesis describes the design, development and applications of materials testing technologies at the micro-scale. Using the rectilinear travel characteristics of compound flexures, two novel testing machines have been designed …
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An experimental method for visualizing undrained shearing failure in a transparent soft clay surrogate
… research investigated the use of non-invasive testing procedures to visualize the failure surface of four laboratory shear-testing techniques in a soft clay surrogate, Laponite RD, at shallow depths with minimal boundary effects. The thesis developed a procedure for tracking deformation in …
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Interfacing Nanomaterials With Fluids and Living Biological Systems
… building blocks to develop nanoscale tools and devices. The rational applications of nanomaterials require understanding of their fundamental properties. Early studies of nanomaterials---characterization of individual nanomaterials (e.g., carbon nanotubes)---have mostly focused on their basic …
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Capturing skin properties from dynamic mechanical analyses
Existing skin mechanical testing devices focus on measuring skin elasticity and are not tailored to assess the dynamic behavior of skin. The mathematical techniques used to analyze data collected using these devices are often not optimal. A new dynamic mechanical device that measures the linear …
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Operational Innovations to Improve Malawi’s HIV Sample Transportation Network
… other sub-Saharan countries, provides diagnostic testing to its citizens through a centralized laboratory network. Diagnostic samples are collected from patients at remote, point-of-care health facilities and diagnostic tests are performed at centralized laboratories. Sample transportation (ST) …
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The Analysis of Weak Rock Using the Pressuremeter
… is a versatile <italic>in situ</italic> testing instrument capable of testing a large range of materials from very soft clay to weak rock. Due to limitations of other testing devices, the pressuremeter is one of the few instruments capable of capturing stiffness and strength properties of …
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An In Vitro Evaluation of the Elements Apex Locator Using the Endo Q System
… and Endo Q models as in-vitro apex locator testing devices. Twenty teeth were decoronated at the CEJ and triplicate measurements were made using the Elements Apex Locator. All measurements were made to the apex reading of the apex locator. True length was established by visualizing the file …
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Entwicklung eines Hepatozytenbioreaktors zur Anwendung in der Toxikologie und Metabolismusforschung
New approaches for in vitro testing of hepato-mediated toxicity are undertaken to offer alternatives to in vivo animal testing. The described bioassay for hepato-mediated toxicity testing is based on a small scale hepatocyte-bioreactor with pig hepatocytes connected to a silicon sensor based …
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Practical Method for Locked-Wheel and CFME Friction Measurement Interconversion
… companies developed in parallel way different devices to satisfy that demand. This generate that the different transportation agencies are using different devices to measure the same characteristic. In order to determine a threshold for the adequate friction levels, the need to compare those …
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Evaluating the prognostic value of risk factors contributing to cardiovascular disease and established risk score estimations
… obtained through point-of-care (POCT) testing devices. The FRS and Prospective Cardiovascular Munster Study Risk Score (PROCAM) were calculated using the cleaned and validated data in Microsoft Excel. Analyses, including correlation matrices and multiple linear regression, were …
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Contact-type mechanical interfaces for high speed digital interconnects
… integrity for highspeed digital signals. As devices become smaller and clock frequencies increase, new technologies for contacting devices are being developed, especially in the field of semiconductor test. These contactors will be incorporated into a socket or an interconnect used in testing …
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Analysis, design and use of a Fourier-transform spectrometer for near infrared glucose absorption measurement
… device is marked by the market value of glucose testing devices, which was estimated to be more than $2.5 billion worldwide in 1997, and growing at 10-15% a year. In this project, a modular Fourier transform spectrometer for the near infrared wavelength region was designed and built. The work was …
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Evaluation of International Friction Index and High-Friction Surfaces
… understand the behavior of different friction testing devices and the influence of texture, speed, and other external conditions on their measurements. The first part of this thesis presents a research effort to compare and harmonize texture and skid resistance measurements taken with various …
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The influence of cementation on liquefaction resistance of sands
… has been limited to studies with conventional testing devices and simple loading paths. These devices are suspected of inducing premature failure in cemented soils, and are not capable of modeling the effects of multiaxial loading. In this investigation, there were two major objectives. The …
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Evaluation of Continuous Friction Measuring Equipment (CFME) for Supporting Pavement Friction Management Programs
… networks systematically and regularly. Several devices are used around the world for measuring friction. Locked-wheel skid trailers are the predominant technology for roadways in the U.S. However, Continues Friction Measuring Equipment (CFME) is emerging as a practical alternative, especially …
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Effect of tablet compression on the dissolution of aspirin tablets using a novel off-center paddle impeller (opi) dissolution testing system
In the pharmaceutical industry, dissolution testing is routinely carried out to determine the dissolution rate of oral solid dosage forms. Among several testing devices, the USP Dissolution Apparatus 2 is the device most commonly used. However, despite its widespread use, this apparatus has been …
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Design of a Novel Mechatronic System to Test Prosthetic Feet Under Specific Walking Activity Loads and Evaluate their Lower Leg Trajectory Error
… with limited mobility due to prosthetic devices that do not fully restore the functionalities of their biological limbs. While commercially available energy storage and return feet do restore some of the functionalities of a missing limb, the development and use of these prosthetic …
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Modelling near-bank flow hydraulics
… of the bank erodibility parameters using jet-testing devices, offer the means of determining fluvial erosion rates and bank erodibility. However, the missing link remains the need to obtain highresolution, spatially distributed, flow data to characterize the near-bank fluid shear stresses that …
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