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 22 for “"PMHS"”.
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Palladium-catalyzed PMHS reductions of imines
… of imines using polymethylhydrosiloxane (PMHS) in the presence of aqueous KF. This methodology developed by our group facilitates the reduction of nitrogen-containing functional groups under mild conditions and short reactions times. To the best of our knowledge, there are no prior reports …
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Quantifying the Response of Relative Brain/Skull Motion to Rotational Input in the PMHS Head
Post-mortem human surrogate (PMHS) head specimens were subjected to two different angular speed pulses. Each pulse was approximately a half-sine with either a peak angular speed of either 40 or 20 rad/s and duration of either 30 or 60 milliseconds. High-speed biplane x-ray was used to record the …
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An analysis of foot-ankle-leg fractures sustained by Warfighters and PMHS in the under-body blast environment
… results from post-mortem human surrogate (PMHS) blast testing. Lower extremity injuries made up the majority of the injuries sustained by mounted Warfighters wounded in an under body blast event. Mitigating this subset of injuries through design improvements to vehicles and personal …
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A public silence : discursive practices surrounding homosexuality
… research on how public mental health services (PMHS) does, or could, address the needs of MSM. When such literature does appear, a common suggestion is that queer staff will be necessary to improve PMHS for MSM through a process of ‘matching’. Yet, no research has specifically explored the views …
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Biomechanical Responses of Small Female Human Surrogates during Frontal Sled Tests using a Realistic Vehicle Environment
… been compared to post-mortem human surrogate (PMHS) responses using a realistic, driver-seat environment to assess biofidelity or ability to predict injury. Therefore, the objective of this study was to compare the responses of the two ATDs and small female PMHS in matched frontal sled tests …
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Copper-catalyzed conjugate reduction
… bis-phosphine with poly(methylhydrosiloxane) (PMHS) as the stoichiometric reductant. In this process, chiral 3-alkylcyclopentanones were isolated in high enantiomeric excess (ee =/> 92%) and in moderate to excellent yields (42-91%). Chapter 2. Kinetic resolution, with good selectivity factors …
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Submarining and Abdominal Injury for Rear-Seated Mid-Size Males during Frontal Crashes
… when compared to post-mortem human surrogates (PMHS). Twenty-four frontal crash sled tests were conducted with the THOR-50M and Hybrid III 50th-percentile male ATDs in three crash conditions and seven modern vehicles. The vehicles included a minivan, an SUV, 3 compact SUVs, and 2 sedans from the …
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Development and Validation of a Child Finite Element Model for Use in Pedestrian Accident Simulations
… were compared to Post-Mortem Human Subject (PMHS) data. The knee model was also simulated under valgus bending, the primary injury mechanism of the knee under lateral loading. Then, the whole pedestrian model was simulated in lateral impact simulation and its response was compared to PMHS …
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Cervical Spine Tolerance And Response In Compressive Loading Modes Including Combined Compression And Lateral Bending
… investigated through post mortem human subject (PMHS) head-neck complex experimentation. Similar to findings of previous researchers, the initial cervical posture influenced the mechanical response of the spine and the loads at failure. The results were combined with available historical …
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Development Of Lower Extremity Injury Criteria And Biomechanical Surrogate To Evaluate Military Vehicle Occupant Injury During An Explosive Blast Event
… lower extremity post mortem human specimens (PMHS) were instrumented with an implantable load cell and strain gages and impacted at one of three incrementally severe AV axial impact conditions. Twelve of the 18 PMHS specimens sustained fractures of the calcaneus, talus, fibula and/or tibia. A …
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Investigating the Thoracic Biomechanical Responses of Rear Seated 50th Percentile Male Anthropomorphic Test Devices and Post Mortem Human Surrogates During Frontal Motor Vehicle Collisions
… percentile male post mortem human surrogates (PMHS) seated in the rear seat of modern vehicles, which have various seat geometries and restraint types, during frontal MVCs. Emphasis is placed on comparisons between the thoracic responses of the three human surrogates e.g., thoracic deflection …
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Highly Active Iron-NHC Complexes for Carbonyl Hydrosilylation
… silanes like polymethylhydrosiloxane (PMHS) under mild conditions at low catalyst loadings is still a challenge, especially with environmentally benign metals. In search of highly active iron catalysts, a series of iron complexes with the formulation FeL2 (L = bifunctional N,C-chelate …
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Studies of the Human Head from Neonate to Adult: An Inertial, Geometrical and Structural Analysis with Comparisons to the ATD Head
… available pediatric post mortem human specimen (PMHS) data. As a substitute for PMHS testing, anthropometric test devices (ATDs) and finite element models (FEMs) have been developed to model the head. However, there is a dearth of data for the design and validation of these models. </p><p>The …
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Development and Validation of Human Body Finite Element Models for Pedestrian Protection
… validated based on post mortem human surrogate (PMHS) test data under various loading including valgus bending at knee joint, lateral/anterior-lateral impact at shoulder, pelvis, thorax, and abdomen, and lateral impact during CPC. Overall, the kinetic/kinematic responses predicted by the …
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Quantifying the Kinematics of Injury Biomechanics: Several Applications Incorporating Human Volunteers and Surrogates
… male ATD, and post mortem human surrogates (PMHSs). The first study sought to investigate the effects of muscle bracing by human volunteers. The second study sought to compare the responses of the relaxed and braced volunteers in the first study to those of the Hybrid III and PMHS subjects. …
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Biomechanical Responses of Human Surrogates under Various Frontal Loading Conditions with an Emphasis on Thoracic Response and Injury Tolerance
… percentile male post-mortem human surrogates (PMHS). All surrogates were tested under three safety restraint conditions: knee bolster (KB), KB and steering wheel airbag (KB/SWAB), and knee bolster airbag and SWAB (KBAB/SWAB). The kinematic, lower extremity, abdominal, thoracic, and neck …
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Characterisation and investigation of serious thoracic injuries in passenger vehicle rollover crashes
… velocity was validated against existing lateral PMHS thoracic impact tests. The validated velocity was then used as an injury criterion for assessing lateral thoracic injuries resulting from rollover crashes. Secondly, thoracic injuries from real-world vehicle rollover crashes were examined based …
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Lower Extremity Biomechanical Response of Female and Male Post-Mortem Human Surrogates to High-Rate Vertical Loading During Simulated Under-Body Blast Events
… biomechanical account of UBB effects on female PMHS. This work will inform future decisions regarding the requirements for a valid injury assessment capability for female Warfighters in the UBB environment and the subsequent research needed to support those requirements. Ultimately, advancements …
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Development of a biomechanical surrogate for the evaluation of commotio cordis protection
… conditions using Post Mortem Human Specimens (PMHS). These data were used to evaluate existing thoracic biomechanical surrogates. Three surrogates were tested in the same impact conditions and none were found to be biofidelic (Biofidelity Rank > 2). A new Sports Specific Thoracic Surrogate …
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An investigation of the forces within the tibiae at typical blast loading rates : with different boots
… at 7.2 m/s and the Post Mortem Human Subject (PMHS) corridors conducted at Wayne State University (WSU), Michigan, U.S.A. The MiL-Lx leg force-time trajectories from both the lower and upper tibia load cell were found to have distinct features that can be related to the impactor dynamics. This …
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