SciCombinator

Discover the most talked about and latest scientific content & concepts.

Concept: Illinois

216

Misalignments between endogenous circadian rhythms and the built environment (i.e., social jet lag, SJL) result in learning and attention deficits. Currently, there is no way to assess the impact of SJL on learning outcomes of large populations as a response to schedule choices, let alone to assess which individuals are most negatively impacted by these choices. We analyzed two years of learning management system login events for 14,894 Northeastern Illinois University (NEIU) students to investigate the capacity of such systems as tools for mapping the impact of SJL over large populations while maintaining the ability to generate insights about individuals. Personal daily activity profiles were validated against known biological timing effects, and revealed a majority of students experience more than 30 minutes of SJL on average, with greater amplitude correlating strongly with a significant decrease in academic performance, especially in people with later apparent chronotypes. Our findings demonstrate that online records can be used to map individual- and population-level SJL, allow deep mining for patterns across demographics, and could guide schedule choices in an effort to minimize SJL’s negative impact on learning outcomes.

Concepts: Learning, Knowledge, Circadian rhythm, Impact event, Learning management system, Illinois, Chicago, Northeastern Illinois University

193

“Tonight, I’m launching a new Precision Medicine Initiative to bring us closer to curing diseases like cancer and diabetes - and to give all of us access to the personalized information we need to keep ourselves and our families healthier.” - President Barack Obama, State of the Union Address, January 20, 2015 President Obama has long expressed a strong conviction that science offers great potential for improving health. Now, the President has announced a research initiative that aims to accelerate progress toward a new era of precision medicine (www.whitehouse.gov/precisionmedicine). We believe that the time is right for this visionary initiative, . . .

Concepts: Health care, United States, President of the United States, Barack Obama, Illinois, Democratic Party, United States presidential election, 2008, Hillary Rodham Clinton

104

American physicians have not widely criticized medical policies at the Guantanamo Bay detainment camp that violate medical ethics. We believe they should. Actions violating medical ethics, taken on behalf of the government, devalue medical ethics for all physicians. The ongoing hunger strike at Guantanamo by as many as 100 of the 166 remaining prisoners presents a stark challenge to the U.S. Department of Defense (DOD) to resist the temptation to use military physicians to “break” the strike through force-feeding. President Barack Obama has publicly commented on the hunger strike twice. On April 26, he said, “I don’t want these individuals . . .

Concepts: Health care, United States, President of the United States, Barack Obama, Iraq War, Illinois, Democratic Party, Guantanamo Bay detention camp

95

Problematic fossils, extinct taxa of enigmatic morphology that cannot be assigned to a known major group, were once a major issue in palaeontology. A long-favoured solution to the ‘problem of the problematica’, particularly the ‘weird wonders’ of the Cambrian Burgess Shale, was to consider them representatives of extinct phyla. A combination of new evidence and modern approaches to phylogenetic analysis has now resolved the affinities of most of these forms. Perhaps the most notable exception is Tullimonstrum gregarium, popularly known as the Tully monster, a large soft-bodied organism from the late Carboniferous Mazon Creek biota (approximately 309-307 million years ago) of Illinois, USA, which was designated the official state fossil of Illinois in 1989. Its phylogenetic position has remained uncertain and it has been compared with nemerteans, polychaetes, gastropods, conodonts, and the stem arthropod Opabinia. Here we review the morphology of Tullimonstrum based on an analysis of more than 1,200 specimens. We find that the anterior proboscis ends in a buccal apparatus containing teeth, the eyes project laterally on a long rigid bar, and the elongate segmented body bears a caudal fin with dorsal and ventral lobes. We describe new evidence for a notochord, cartilaginous arcualia, gill pouches, articulations within the proboscis, and multiple tooth rows adjacent to the mouth. This combination of characters, supported by phylogenetic analysis, identifies Tullimonstrum as a vertebrate, and places it on the stem lineage to lampreys (Petromyzontida). In addition to increasing the known morphological disparity of extinct lampreys, a chordate affinity for T. gregarium resolves the nature of a soft-bodied fossil which has been debated for more than 50 years.

Concepts: Evolution, Chordate, Fossil, Illinois, Dinosaur, Trilobite, Burgess Shale, Grundy County, Illinois

65

Immigration raids exemplify the reach of immigration law enforcement into the lives of Latino community members, yet little research characterizes the health effects of these raids. We examined the health implications of an immigration raid that resulted in multiple arrests and deportations and occurred midway through a community survey of a Latino population. We used linear regression following principal axis factoring to examine the influence of raid timing on immigration enforcement stress and self-rated health. We controlled for age, sex, relationship status, years in the county in which the raid occurred, children in the home, and nativity. 325 participants completed the survey before the raid and 151 after. Completing the survey after the raid was associated with higher levels of immigration enforcement stress and lower self-rated health scores. Findings indicate the negative impact of immigration raids on Latino communities. Immigration discussions should include holistic assessments of health.

Concepts: Demography, Population, United States, Immigration, Community, Illinois, Midwestern United States, Chicago

52

Just over 5 years ago, on March 23, 2010, President Barack Obama signed the Affordable Care Act (ACA) into law. Its enactment may constitute the most important event of the Obama presidency and could fundamentally affect the future of health care in the United States. From a historical perspective, 5 years is a very short time, far too short to assess definitively the effects of the ACA. Still, the 5-year mark seems to be a logical point to pause and take stock of how the ACA has fared to date - to review what we know now of its effect . . .

Concepts: Health care, United States, President of the United States, Barack Obama, Iraq War, Illinois, Democratic Party, Inauguration of Barack Obama

42

Growing evidence indicates that immigration policy and enforcement adversely affect the well-being of Latino immigrants, but fewer studies examine ‘spillover effects’ on USA-born Latinos. Immigration enforcement is often diffuse, covert and difficult to measure. By contrast, the federal immigration raid in Postville, Iowa, in 2008 was, at the time, the largest single-site federal immigration raid in US history.

Concepts: United States, Demographics of the United States, Immigration, California, Hispanic and Latino Americans, New Jersey, Arizona, Illinois

35

Despite cash-strapped times for research, several ambitious collaborative neuroscience projects have attracted large amounts of funding and media attention. In Europe, the Human Brain Project aims to develop a large-scale computer simulation of the brain, whereas in the United States, the Brain Activity Map is working towards establishing a functional connectome of the entire brain, and the Allen Institute for Brain Science has embarked upon a 10-year project to understand the mouse visual cortex (the MindScope project). US President Barack Obama’s announcement of the BRAIN Initiative (Brain Research through Advancing Innovative Neurotechnologies Initiative) in April 2013 highlights the political commitment to neuroscience and is expected to further foster interdisciplinary collaborations, accelerate the development of new technologies and thus fuel much needed medical advances. In this Viewpoint article, five prominent neuroscientists explain the aims of the projects and how they are addressing some of the questions (and criticisms) that have arisen.

Concepts: Psychology, Brain, United States, President of the United States, Visual perception, Barack Obama, Illinois, Democratic Party

28

BACKGROUND: The best approaches to repairing large inguinoscrotal hernias and handling of the distal sac are still debated. Complete dissection of a distal sac which extends deep into the scrotum carries a risk of orchitis and damage to the cord structures. However, failure to deal with the distal sac often results in the formation of a large and bothersome seroma or pseudohydrocele. We describe a technique for managing large distal sacs to avoid clinically important seromas when repairing large inguinoscrotal hernias, using the enhanced view totally extraperitoneal (e-TEP) endoscopic technique. METHODS: From October 2010 to November 2011, 94 consecutive elective hernia repairs were performed using the e-TEP technique. Six of these patients had large inguinoscrotal hernias, defined as hernias extending deep into the scrotum with a distal sac not amenable to dissection. In these six patients, we managed the distal sac by pulling it out of the scrotum and fixing it high and laterally to the posterior inguinal wall. We prospectively followed these patients and examined them at 8 days and 1 and 3 months postoperatively, looking specifically for signs or symptoms of seroma. Ultrasonography was performed at each follow-up visit. RESULTS: Only one of the patients had developed a seroma by the eighth postoperative day. The seroma was drained and did not recur or produce symptoms during the following 3 months. There were no major complications or early recurrences in the series. CONCLUSIONS: Patients with large inguinoscrotal hernias and sacs extending deep into the scrotum can benefit from reduction and fixation of the distal sac high and laterally to the posterior inguinal wall. This technique lowers the risk of developing clinically significant seroma.

Concepts: Inguinal hernia, Hernia, Aortic dissection, Fix, Herniorrhaphy, Illinois

25

The Illinois Department of Public Health mandated that all clinicians who provide care to obstetric patients participate in the Illinois Obstetric Hemorrhage Project. The aim of the current report is to describe change in knowledge among providers engaged in the project, as assessed by pre- and post-tests.

Concepts: Health care, Obstetrics, U.S. state, Barack Obama, Illinois, Chicago, Missouri, Illinois River