Time-varying neutrino mass from a supercooled phase transition: current cosmological constraints and impact on the Ωm\Omega_m-σ8\sigma_8 plane

In this paper we investigate a time-varying neutrino mass model, motivated by the mild tension between cosmic microwave background (CMB) measurements of the matter fluctuations and those obtained from low-redshift data. We modify the minimal case of the model proposed by Dvali and Funcke (2016) that predicts late neutrino mass generation in a post-recombination cosmic phase transition, by assuming that neutrino asymmetries allow for the presence of relic neutrinos in the late-time Universe. We show that, if the transition is supercooled, current cosmological data (including CMB temperature, polarization and lensing, baryon acoustic oscillations, and Type Ia supernovae) prefer the scale factor $a_s$ of the phase transition to be very large, peaking at $a_s\sim 1$, and therefore supporting a cosmological scenario in which neutrinos are almost massless until very recent times. We find that in this scenario the cosmological bound on the total sum of the neutrino masses today is significantly weakened compared to the standard case of constant-mass neutrinos, with $\sum m_\nu<4.8$~eV at 95\% confidence, and in agreement with the model predictions. The main reason for this weaker bound is a large correlation arising between the dark energy and neutrino components in the presence of false vacuum energy that converts into the non-zero neutrino masses after the transition. This result provides new targets for the coming KATRIN and PTOLEMY experiments. We also show that the time-varying neutrino mass model considered here does not provide a clear explanation to the existing cosmological $\Omega_m$-$\sigma_8$ discrepancies.Comment: 13 pages, 13 figures, matches updated version accepted by Physical Review

Peranan Auditor Intenal dalam Menunjang Pelaksanaan Good Corporate Governance (Studi Kasus pada PT Dirgantara Indonesia)

Good corporate governance is not a concept, but comprehension a lot of misunderstanding. For this because of different estimated, a lot of people need estimated. Auditor internal one of another profession that help improve good corporate governance, in this moment Good corporate governance develop to be the primary component to improve of managing the good corporate. This study aims to determine the role of internal auditor in supporting the implementation of good corporate governance, and whether or not the implementation of good corporate governance in companies.Object of the research is the internal auditor&rsquo;s role in supporting the implementation of good corporate governance( GCG). This research has been done at PT Dirgantara Indonesia, a company which move in manufacturing aircraft, the company at Padjadjaran No. 154 Bandung.Research method that use is descriptive and analysis method, which collect data through library research and field study interview and questioner. Result of the research analyzed and compare with relevance theory.From the result of the research of questioner, output t- arithmetic 6.893and t-table 2.306, this suggests that the research hypothesis is accepted, which means there is a link between internal auditor role in supporting the implementation of good corporate governance

A fully integrated paperfluidic molecular diagnostic chip for the extraction, amplification, and detection of nucleic acids from clinical samples

Paper diagnostics have successfully been employed to detect the presence of antigens or small molecules in clinical samples through immunoassays; however, the detection of many disease targets relies on the much higher sensitivity and specificity achieved via nucleic acid amplification tests (NAAT). The steps involved in NAAT have recently begun to be explored in paper matrices, and our group, among others, has reported on paper-based extraction, amplification, and detection of DNA and RNA targets. Here, we integrate these paper-based NAAT steps into a single paperfluidic chip in a modular, foldable system that allows for fully integrated fluidic handling from sample to result. We showcase the functionality of the chip by combining nucleic acid isolation, isothermal amplification, and lateral flow detection of human papillomavirus (HPV) 16 DNA directly from crude cervical specimens in less than 1 hour for rapid, early detection of cervical cancer. The chip is made entirely of paper and adhesive sheets, making it low-cost, portable, and disposable, and offering the potential for a point-of-care molecular diagnostic platform even in remote and resource-limited settings.U54 EB015403 - NIBIB NIH HHS; U54 EB015408 - NIBIB NIH HHS; U54-EB015403-S1 - NIBIB NIH HH

Active stabilization to prevent surge in centrifugal compression systems

This report documents an experimental and analytical study of the active stabilization of surge in a centrifugal engine. The aims of the research were to extend the operating range of a compressor as far as possible and to establish the theoretical framework for the active stabilization of surge from both an aerodynamic stability and a control theoretic perspective. In particular, much attention was paid to understanding the physical limitations of active stabilization and how they are influenced by control system design parameters. Previously developed linear models of actively stabilized compressors were extended to include such nonlinear phenomena as bounded actuation, bandwidth limits, and robustness criteria. This model was then used to systematically quantify the influence of sensor-actuator selection on system performance. Five different actuation schemes were considered along with four different sensors. Sensor-actuator choice was shown to have a profound effect on the performance of the stabilized compressor. The optimum choice was not unique, but rather shown to be a strong function of some of the non-dimensional parameters which characterize the compression system dynamics. Specifically, the utility of the concepts were shown to depend on the system compliance to inertia ratio ('B' parameter) and the local slope of the compressor speedline. In general, the most effective arrangements are ones in which the actuator is most closely coupled to the compressor, such as a close-coupled bleed valve inlet jet, rather than elsewhere in the flow train, such as a fuel flow modulator. The analytical model was used to explore the influence of control system bandwidth on control effectiveness. The relevant reference frequency was shown to be the compression system's Helmholtz frequency rather than the surge frequency. The analysis shows that control bandwidths of three to ten times the Helmholtz frequency are required for larger increases in the compressor flow range. This has important implications for implementation in gas turbine engines since the Helmholtz frequencies can be over 100 Hz, making actuator design extremely challenging

Exploring health and exercise professionals’ views on muscle dysmorphia in the Norwegian population

Objective Symptoms of muscle dysmorphia (MD) are prevalent among males who engage in weight training. If symptoms remain undetected and untreated, it can impair their health and wellbeing. Research indicates that men are reluctant to seek professional help on their own, and there is a lack of intervention options for people with MD symptoms. Health and exercise professionals’ competence and perspectives may offer important knowledge around the development of future interventions. However, research has yet to do so. This study therefore aimed to explore health and exercise professionals’ views and perspectives on MD in the Norwegian population. Method Semi-structured interviews were conducted with seven health and exercise professionals to discuss their knowledge and experiences with MD, and their views on prevention measures and interventions. Results Thematic analysis identified three overarching themes: (1) MD symptomatology, including experiences with symptoms and consequences of MD, (2) challenges related to identifying MD symptoms, and (3) managing MD. Conclusion Symptoms of MD were described by participants to be severe and complex yet challenging to identify among their clients/patients. There is a need to develop interventions aimed at reducing symptom development, as well as resources to assist health and exercise professionals in approaching individuals with MD symptoms.publishedVersio