Use of Clinically Oriented Laboratory Manuals in a Prosection Gross Anatomy Laboratory during COVID-19.

Unlabelled: Gross anatomy is a critical course for the development of a variety of skills such as anatomical knowledge and spatial, critical, and clinical reasoning. There have been few attempts to integrate clinical applications in gross anatomy, with the majority of these being in the lecture hall and not in the laboratory. Clinical cases and guided questions were added to a laboratory manual (Clinically Oriented Laboratory Manuals (COLMs)) in a first-year medical gross anatomy prosection course during COVID-19.

Using Schlieren imaging to estimate the geometry of a shock wave radiated by a trumpet bell.

The Schlieren method has been used before to visualize weak shock waves radiated from the open ends of brass instruments, but no attempt has previously been undertaken, however, to measure the geometry of the radiated wavefronts using the Schlieren images. In this paper Schlieren visualization is used to estimate the geometry of the two-dimensional shock wavefronts radiated from the bell of a trumpet at different frequencies. It is observed that the geometry of the shocks does change with frequency, in the expected manner.

Non-censored rib fracture data during frontal PMHS sled tests.

Objective: The purpose of this study was to obtain non-censored rib fracture data due to three-point belt loading during dynamic frontal post-mortem human surrogate (PMHS) sled tests. The PMHS responses were then compared to matched tests performed using the Hybrid-III 50(th) percentile male ATD.

Methods: Matched dynamic frontal sled tests were performed on two male PMHSs, which were approximately 50(th) percentile height and weight, and the Hybrid-III 50(th) percentile male ATD.

Histological determination of the human origin of bone fragments.

A frequently encountered task in the forensic scenario is verification of the human origin of severely degraded fragments of bone. In these cases histological methods which consider osteon size and morphology can prove to be useful. The authors in the present study verify the applicability of published algorithms to flat and subadult bones from human, dog, cat, cow, rabbit, sheep, pig, chicken, quail, and turkey samples.

Biomechanical response of the human cervical spine.

The purpose of this study was to characterize the biomechanical response of human cervical spine segments in dynamic axial compression. This was accomplished by performing dynamic axial compression tests on human cervical spine segments, C4-T1 and C6-T1, dissected from fresh frozen human male cadavers. The proximal and distal vertebral bodies were fixed to a load cell with a custom aluminum pot and subjected to dynamic compressive loading rates using a servo-hydraulic Material Testing System at a rate of 50 mm/s.

Predicting zygoma fractures from baseball impact.

The purpose of this study is to develop injury risk functions that predict zygoma fracture based on baseball type and impact velocity. Zygoma fracture strength data from published experiments were mapped with the force exerted by a baseball on the orbit as a function of ball velocity. Using a normal distribution, zygoma fracture risk functions were developed.

Expression of the iron-responsive irpA gene from the cyanobacterium Synechococcus sp strain PCC 7942.

Expression of the iron-stress-induced irpA gene of Synechococcus sp. strain PCC 7942 was investigated by constructing luminescent p irpA::luxAB promoter fusions. Growth of Fe-replete and Fe-limited cultures yielded high levels of luminescence only under conditions of iron deficiency.

Construction and initial characterization of a luminescent Synechococcus sp. PCC 7942 Fe-dependent bioreporter.

A Synechococcus sp. PCC 7942 bioreporter strain capable of sensing bioavailable Fe was constructed by fusing the Fe-responsive isiAB promoter to the Vibrio harveyi luxAB genes. Monitoring luxAB-dependent luminescence through the growth curve demonstrated that in Fe-replete media, transcription from the isiAB promoter was induced transiently in the mid-exponential phase of growth.