Direct EIT Reconstructions of Complex Admittivities on a Chest-Shaped Domain in 2-D

Electrical impedance tomography (EIT) is a medical imaging technique in which current is applied on electrodes on the surface of the body, the resulting voltage is measured, and an inverse problem is solved to recover the conductivity and/or permittivity in the interior. Images are then formed from the reconstructed conductivity and permittivity distributions. In the 2-D geometry, EIT is clinically useful for chest imaging. In this work, an implementation of a D-bar method for complex admittivities on a general 2-D domain is presented. In particular, reconstructions are computed on a chest-shaped domain for several realistic phantoms including a simulated pneumothorax, hyperinflation, and pleural effusion. The method demonstrates robustness in the presence of noise. Reconstructions from trigonometric and pairwise current injection patterns are included

Vulnerability and the Erosion of Seismic Culture in Mountainous Central Asia

Vulnerability to earthquake disasters in mountainous regions frequently escapes investigation and analysis. The tragic and costly earthquake disasters that have recently occurred in Central Asia have spurred important questions among local, regional, and international policymakers, scientists, and social activists regarding the root causes of earthquake vulnerability. Drawing on an analysis of recent earthquake disasters in Kyrgyzstan, Tajikistan, Afghanistan, and Pakistan, this article explores the concept of “seismic culture” (Degg and Homan 2005) in relation to vulnerability. Specifically, it argues that diminishing levels of indigenous hazard knowledge, demographic shifts, gendered livelihood transformations, and the lack of public access to science- based earthquake information have contributed to overall low levels of seismic cultures of prevention in the region. A major finding of the study points to the particular role of women in helping to redress the erosion of seismic culture, thereby bolstering local resilience, earthquake preparedness, and disaster risk reduction

Can Portland cement be replaced by low-carbon alternative materials? A study on thermal properties and carbon emissions of innovative cements

One approach to decarbonising the cement and construction industry is to replace ordinary Portland cement (OPC) with lower carbon alternatives that have suitable properties. We show that seven innovative cementitious binders comprised of metakaolin, silica fume and nano-silica have improved thermal performance compared with OPC and we calculate the full CO2 emissions associated with manufacture and transport of each binder for the first time. Due to their high porosity, the thermal conductivity of the novel cements is 58–90% lower than OPC, and we show that a thin layer (20 mm), up to 80% lower than standard insulating materials, is enough to bring energy emissions in domestic construction into line with 2013 Building Regulations. Carbon emissions in domestic construction can be reduced by 20–50% and these cementitious binders are able to be recycled, unlike traditional insulation materials

Imaging Modalities Relevant to Intracranial Pressure Assessment in Astronauts: A Case-Based Discussion

Introduction: Intracranial pressure (ICP) elevation has been inferred or documented in a number of space crewmembers. Recent advances in noninvasive imaging technology offer new possibilities for ICP assessment. Most International Space Station (ISS) partner agencies have adopted a battery of occupational health monitoring tests including magnetic resonance imaging (MRI) pre- and postflight, and high-resolution sonography of the orbital structures in all mission phases including during flight. We hypothesize that joint consideration of data from the two techniques has the potential to improve quality and continuity of crewmember monitoring and care. Methods: Specially designed MRI and sonographic protocols were used to image eyes and optic nerves (ON) including the meningeal sheaths. Specific crewmembers multi-modality imaging data were analyzed to identify points of mutual validation as well as unique features of complementary nature. Results and Conclusion: Magnetic resonance imaging (MRI) and high-resolution sonography are both tomographic methods, however images obtained by the two modalities are based on different physical phenomena and use different acquisition principles. Consideration of the images acquired by these two modalities allows cross-validating findings related to the volume and fluid content of the ON subarachnoid space, shape of the globe, and other anatomical features of the orbit. Each of the imaging modalities also has unique advantages, making them complementary techniques

The thalamic reuniens is associated with consolidation of non-spatial memory too

The nucleus reuniens (RE) is situated in the midline thalamus and provides a key link between the hippocampus and prefrontal cortex. This anatomical relationship positions the Re as an ideal candidate to facilitate memory consolidation. However, there is no evidence that this role extends beyond spatial memory and contextual fear memory, which are both strongly associated with hippocampal function. We, therefore, trained intact male Long–Evans rats on an odor–trace–object paired-associate task where the explicit 10-s delay between paired items renders the task sensitive to hippocampal function. Neurons in the RE showed significantly increased activation of the immediate early gene (Zif268) when rats were re-tested for previous non-spatial memory 25 days after acquisition training, compared to a group tested at 5-days post-acquisition, as well as a control group tested 25 days after acquisition but with a new pair of non-spatial stimuli, and home cage controls. The remote recall group also showed relatively augmented IEG expression in the superficial layers of the medial PFC (anterior cingulate cortex and prelimbic cortex). These findings support the conclusion that the RE is preferentially engaged during remote recall in this non-spatial task and thus has a role beyond spatial memory and contextual fear memory

Noninvasive Techniques for Intracranial Pressure Assessment: A Review from Aerospace Medicine Perspective

Microgravity-induced changes in fluid distribution and other physiological factors due to space flight have been implicated as the cause of increased intracranial pressure (ICP) in a number of space crewmembers. The modest levels of ICP elevation and absence of severe symptoms in this group do not warrant invasive diagnostic interventions. However, the long-term trends and residual or consequential changes secondary to the observed ICP elevation in this group are not yet known. Therefore, close attention is needed to evaluate the potential techniques of noninvasively assessing ICP, including those feasible for in-flight use. Of particular interest is continuity between ground and in-flight testing, whereby data from the same or different techniques allow reasonably dependable estimation of ICP trends and responses. Methods: A thorough review of current literature, analysis of NASA data, and interviews with subject matter experts were conducted to construct a presentation that reflects the state of the art for noninvasive ICP measurement and monitoring. Results: Multiple imaging and non-imaging modalities are available to assess ICP in terrestrial clinical and experimental environments. Imaging alternatives include magnetic resonance imaging (MRI) and high-resolution sonography. Non-imaging techniques include transcranial Doppler, certain audiological methods, and venous ophthalmodynamometry, among others. Special functional techniques have been proposed recently that allow the use of advanced MRI methods to calculate ICP in addition to the acquisition of high-resolution images. Our data include many of these applications, with several cases of correlation with lumbar puncture, the invasive "gold standard" measurement of ICP

PROGRAM & PROCEEDINGS of the 2022 COLLOQUIUM OF THE STONY BROOK UNIVERSITY INTELLECTUAL PROPERTY PARTNERS Female Perspectives on Entrepreneurship and Research How diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth

Diverse and varied perspectives are not only central to our institutional mission, but are essential to our society, as we hope to create a more inclusive, more sustainable and ultimately brighter world. Diverse perspectives and collaboration between different institutions, fields and industries must become the norm. This is the program and proceeding of Stony Brook University\u27s colloquium on female perspectives on entrepreneurship and research and how diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth. This was a much-needed discussion in January 2022 that\u27s important for the development of entrepreneurship and research worldwide. At Stony Brook University, the entire research community believes that creating an equitable and integrated work environment is an essential part of the success of its innovation and culture. So, this proceeding provides a transcript of the meaningful moderated discussion between 6 expert panelists about female entrepreneurship and research

The Orbit and Occultations of KH 15D

The unusual flux variations of the pre-main-sequence binary star KH 15D have been attributed to occultations by a circumbinary disk. We test whether or not this theory is compatible with newly available data, including recent radial velocity measurements, CCD photometry over the past decade, and photographic photometry over the past 50 years. We find the model to be successful, after two refinements: a more realistic motion of the occulting feature, and a halo around each star that probably represents scattering by the disk. The occulting feature is exceptionally sharp-edged, raising the possibility that the dust in the disk has settled into a thin layer, and providing a tool for fine-scale mapping of the immediate environment of a T Tauri star. However, the window of opportunity is closing, as the currently visible star may be hidden at all orbital phases by as early as 2008.Comment: To appear in ApJ [16 pages, 13 figures

Female Perspectives on Entrepreneurship and Research How diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth

Diverse and varied perspectives are not only central to our institutional mission, but are essential to our society, as we hope to create a more inclusive, more sustainable and ultimately brighter world. Diverse perspectives and collaboration between different institutions, fields and industries must become the norm. This is the program and proceeding of Stony Brook University\u27s colloquium on female perspectives on entrepreneurship and research and how diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth. This was a much-needed discussion in January 2022 that\u27s important for the development of entrepreneurship and research worldwide. At Stony Brook University, the entire research community believes that creating an equitable and integrated work environment is an essential part of the success of its innovation and culture. So, this proceeding provides a transcript of the meaningful moderated discussion between 6 expert panelists about female entrepreneurship and research

Female Perspectives on Entrepreneurship and Research How diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth

Diverse and varied perspectives are not only central to our institutional mission, but are essential to our society, as we hope to create a more inclusive, more sustainable and ultimately brighter world. Diverse perspectives and collaboration between different institutions, fields and industries must become the norm. This is the program and proceeding of Stony Brook University\u27s colloquium on female perspectives on entrepreneurship and research and how diverse perspectives inspire creativity, drive innovation, and encourage inclusive economic growth. This was a much-needed discussion in January 2022 that\u27s important for the development of entrepreneurship and research worldwide. At Stony Brook University, the entire research community believes that creating an equitable and integrated work environment is an essential part of the success of its innovation and culture. So, this proceeding provides a transcript of the meaningful moderated discussion between 6 expert panelists about female entrepreneurship and research