Nonlinear interference in a mean-field quantum model

Using similar nonlinear stationary mean-field models for Bose-Einstein Condensation of cold atoms and interacting electrons in a Quantum Dot, we propose to describe the original many-particle ground state as a one-particle statistical mixed state of the nonlinear eigenstates whose weights are provided by the eigenstate non-orthogonality. We search for physical grounds in the interpretation of our two main results, namely, quantum-classical nonlinear transition and interference between nonlinear eigenstates.Comment: RevTeX (pdfLaTeX), 7 pages with 5 png-figures include

Team dynamics in emergency surgery teams: results from a first international survey

Background: Emergency surgery represents a unique context. Trauma teams are often multidisciplinary and need to operate under extreme stress and time constraints, sometimes with no awareness of the trauma\u2019s causes or the patient\u2019s personal and clinical information. In this perspective, the dynamics of how trauma teams function is fundamental to ensuring the best performance and outcomes. Methods: An online survey was conducted among the World Society of Emergency Surgery members in early 2021. 402 fully filled questionnaires on the topics of knowledge translation dynamics and tools, non-technical skills, and difficulties in teamwork were collected. Data were analyzed using the software R, and reported following the Checklist for Reporting Results of Internet E-Surveys (CHERRIES). Results: Findings highlight how several surgeons are still unsure about the meaning and potential of knowledge translation and its mechanisms. Tools like training, clinical guidelines, and non-technical skills are recognized and used in clinical practice. Others, like patients\u2019 and stakeholders\u2019 engagement, are hardly implemented, despite their increasing importance in the modern healthcare scenario. Several difficulties in working as a team are described, including the lack of time, communication, training, trust, and ego. Discussion: Scientific societies should take the lead in offering training and support about the abovementioned topics. Dedicated educational initiatives, practical cases and experiences, workshops and symposia may allow mitigating the difficulties highlighted by the survey\u2019s participants, boosting the performance of emergency teams. Additional investigation of the survey results and its characteristics may lead to more further specific suggestions and potential solutions

Applying CERN’s detector technology to health: MARS Biomedical 3D spectroscopic x-ray imaging

New Zealand has benefited considerably from our links with the European Centre for Nuclear Research (CERN). We have been an associate member of CERN for 8 years, with projects in high energy physics theory, in the high energy physics Compact Muon Solenoid (CMS) experiment, and in technology development. In 2006 we joined the Medipix-3 Collaboration. We have installed Medipix detectors in the CMS Cavern for monitoring neutrons and ionising radiation. Our major effort has been to build Medipix detectors into a 3D x-ray scanner of our design. The scanner is dubbed Desktop MARS (Medipix All Resolution system) and provides energy selective images of small biological and pathology specimens. This paper reviews several matters. We look at the support given by the NZ government who have seen benefits in our involvement, including skill development, economic and commercial opportunities, and in overcoming the isolation of distance. We review NZ’s particular role in CMS where particle physics is a driver of new technology; We explore the opportunities arising from Medipix as the first photon processing detector. We first summarise the design of the Medipix detector and discuss likely benefits of spectroscopic imaging in clinical radiology. CERN and the Medpiox-3 Collaboration have licensed us to commercialise the technology for biomedical imaging of small animals and humans using the Medipix detector as the key tool for obtaining 3D computed tomography spectroscopic x-ray CT images. Finally we present some images of biological specimens taken with the MARS scanner, including initial spectroscopic images of mice