3,796 research outputs found

    Macronutrient Intake of Pregnant Exercisers and Non-Exercisers

    Get PDF
    With the childhood obesity pandemic, it is vital for pregnant women to focus on healthy habits (i.e. proper nutrition, exercise) in order to ensure a positive in utero environment. Exercise during pregnancy is associated with normalizing birth weight and decreased body fat of infants. Research of maternal diet finds that increases in maternal consumption of proteins, fats, carbohydrates, and animal and vegetable proteins cause an increase in birth weight. To date, research has not investigated potential differences in nutrition among women that exercise or not during pregnancy. This research project aims to determine if differences exist in maternal nutrition, more specifically macronutrient intake, related to exercise during pregnancy. Based on previous literature, we hypothesize that pregnant exercisers will have an increased intake of macronutrients (proteins, carbohydrates, fats) compared to pregnant women who do not exercise, but similar frequencies of macronutrients. Women were either exercise trained (moderate intensity, 50 minutes, 3 times per week) or not (control). All women completed a food frequency questionnaire in the first trimester prior to training and at the end of pregnancy (after 20 week training period). Data from 21 uncomplicated pregnancies was analyzed utilizing t-test for all measures. All women had healthy, singleton pregnancy and delivered healthy infants with normal birth weights. Preliminary findings from this study show there are no group differences in most first trimester macronutrients (protein, carbohydrates, vegetable/fruit, fat/sweet). Preliminary FFQ results show that pregnant women in the exercise group have significantly higher intake of dairy compared to pregnant women that do not exercise during pregnancy. By third trimester, there are no group differences in macronutrient intake of protein, dairy, carbohydrate, vegetables/fruits, and fat/sweets. In addition, gestational weight gain measures show that exercise during pregnancy helps maintain normal weight gain during pregnancy and appropriate birth weight of infants. These findings suggest all pregnant women obtain similar levels of macronutrients regardless of exercise activity, or not. Although this supports the impact of exercise, and not nutrition per se, on previously beneficial fetal/infant outcomes, further analysis is required regarding quality of macronutrients

    Thermal Time Scales in a Color Glass Condensate

    Full text link
    In a model of relativistic heavy ion collisions wherein the unconfined quark-gluon plasma is condensed into glass, we derive the Vogel-Fulcher-Tammann cooling law. This law is well known to hold true in condensed matter glasses. The high energy plasma is initially created in a very hot negative temperature state and cools down to the Hagedorn glass temperature at an ever decreasing rate. The cooling rate is largely determined by the QCD string tension derived from hadronic Regge trajectories. The ultimately slow relaxation time is a defining characteristic of a color glass condensate.Comment: 5 pages, ReVTeX format, nofigure

    Spacings of Quarkonium Levels with the Same Principal Quantum Number

    Get PDF
    The spacings between bound-state levels of the Schr\"odinger equation with the same principal quantum number NN but orbital angular momenta ℓ\ell differing by unity are found to be nearly equal for a wide range of power potentials V=λrÎœV = \lambda r^\nu, with ENℓ≈F(Îœ,N)−G(Îœ,N)ℓE_{N \ell} \approx F(\nu, N) - G(\nu,N) \ell. Semiclassical approximations are in accord with this behavior. The result is applied to estimates of masses for quarkonium levels which have not yet been observed, including the 2P ccˉc \bar c states and the 1D bbˉb \bar b states.Comment: 20 pages, latex, 3 uuencoded figures submitted separately (process using psfig.sty

    Hadronic Transitions among Quarkonium States in a Soft-Exchange-Approximation. Chiral Breaking and Spin Symmetry Breaking Processes

    Full text link
    Although no asymptotic heavy quark spin symmetry, and even more no flavor symmetry, are expected for systems such as quarkonium, a numerical discussion shows that for some processes and in a preasymptotic region which may roughly include charmonium and bottomonium, the use of the spin-symmetry may be useful in conjunction with chiral symmetry for light hadrons (soft-exchange- approximation regime, SEA). We continue our discussion of hadronic transitions in the SEA-regime by studying in particular chiral breaking transitions such as  3Pâ€Č→ 3Pπ0~^3P' \to ~^3P\pi^0,  3Pη~^3P\eta, level splittings and transitions which break both chiral and spin symmetry, such as ψâ€Č→J/ψπ0\psi ' \to J/\psi \pi^0, J/ψηJ/\psi \eta, and  1P1→J/ψπ0~^1P_1 \to J/\psi \pi^0.Comment: LaTeX (style article) 19 pages, UGVA-DPT 12-80

    Possible retardation effects of quark confinement on the meson spectrum

    Full text link
    The reduced Bethe-Salpeter equation with scalar confinement and vector gluon exchange is applied to quark-antiquark bound states. The so called intrinsic flaw of Salpeter equation with static scalar confinement is investigated. The notorious problem of narrow level spacings is found to be remedied by taking into consideration the retardation effect of scalar confinement. Good fit for the mass spectrum of both heavy and light quarkomium states is then obtained.Comment: 14 pages in LaTex for

    Monitoring the CMS strip tracker readout system

    Get PDF
    The CMS Silicon Strip Tracker at the LHC comprises a sensitive area of approximately 200 m2 and 10 million readout channels. Its data acquisition system is based around a custom analogue front-end chip. Both the control and the readout of the front-end electronics are performed by off-detector VME boards in the counting room, which digitise the raw event data and perform zero-suppression and formatting. The data acquisition system uses the CMS online software framework to configure, control and monitor the hardware components and steer the data acquisition. The first data analysis is performed online within the official CMS reconstruction framework, which provides many services, such as distributed analysis, access to geometry and conditions data, and a Data Quality Monitoring tool based on the online physics reconstruction. The data acquisition monitoring of the Strip Tracker uses both the data acquisition and the reconstruction software frameworks in order to provide real-time feedback to shifters on the operational state of the detector, archiving for later analysis and possibly trigger automatic recovery actions in case of errors. Here we review the proposed architecture of the monitoring system and we describe its software components, which are already in place, the various monitoring streams available, and our experiences of operating and monitoring a large-scale system

    The CMS Tracker Readout Front End Driver

    Full text link
    The Front End Driver, FED, is a 9U 400mm VME64x card designed for reading out the Compact Muon Solenoid, CMS, silicon tracker signals transmitted by the APV25 analogue pipeline Application Specific Integrated Circuits. The FED receives the signals via 96 optical fibers at a total input rate of 3.4 GB/sec. The signals are digitized and processed by applying algorithms for pedestal and common mode noise subtraction. Algorithms that search for clusters of hits are used to further reduce the input rate. Only the cluster data along with trigger information of the event are transmitted to the CMS data acquisition system using the S-LINK64 protocol at a maximum rate of 400 MB/sec. All data processing algorithms on the FED are executed in large on-board Field Programmable Gate Arrays. Results on the design, performance, testing and quality control of the FED are presented and discussed

    Understanding children’s constructions of meanings about other children: implications for inclusiveeducation

    No full text
    This paper explores the factors that influence the way children construct meanings about other children, and especially those who seem to experience marginalisation, within school contexts. The research involved an ethnographic study in a primary school in Cyprus over a period of 5 months. Qualitative methods were used, particularly participant observations and interviews with children. Interpretation of the data suggests that children's perceptions about other children, and especially those who come to experience marginalisation, are influenced by the following factors: other children and the interactions between them; adults’ way of behaving in the school; the existing structures within the school; and the cultures of the school and the wider educational context. Even though the most powerful factor was viewed to be the adults’ influence, it was rather the interweaving between different factors that seemed to lead to the creation of particular meanings for other children. In the end, it is argued that children's voices should be seen as an essential element within the process of developing inclusive practices.<br/

    Data acquisition software for the CMS strip tracker

    Get PDF
    The CMS silicon strip tracker, providing a sensitive area of approximately 200 m2 and comprising 10 million readout channels, has recently been completed at the tracker integration facility at CERN. The strip tracker community is currently working to develop and integrate the online and offline software frameworks, known as XDAQ and CMSSW respectively, for the purposes of data acquisition and detector commissioning and monitoring. Recent developments have seen the integration of many new services and tools within the online data acquisition system, such as event building, online distributed analysis, an online monitoring framework, and data storage management. We review the various software components that comprise the strip tracker data acquisition system, the software architectures used for stand-alone and global data-taking modes. Our experiences in commissioning and operating one of the largest ever silicon micro-strip tracking systems are also reviewed

    HbA1c variability in adults with type 1 diabetes on continuous subcutaneous insulin infusion (CSII) therapy compared to multiple daily injection (MDI) treatment

    Get PDF
    Objective To determine if continuous subcutaneous insulin infusion (CSII) therapy is associated with lower glycated haemoglobin (HbA1c) variability (long-term glycaemic variability; GV) relative to multiple daily injection (MDI) treatment in adults with type 1 diabetes mellitus (T1DM). Design Retrospective audit. Setting and participants Clinic records from 506 adults with T1DM from two tertiary Australian hospitals. Outcome measures Long-term GV was assessed by HbA1c SD and coefficient of variation (CV) in adults on established MDI or CSII therapy, and in a subset changing from MDI to CSII. Results Adults (n=506, (164 CSII), 50% women, mean±SD age 38.0±15.3 years, 17.0±13.7 years diabetes, mean HbA1c 7.8%±1.2% (62±13 mmol/mol) on CSII, 8.0%±1.5% (64±16 mmol/mol) on MDI) were followed for 4.1±3.6 years. CSII use was associated with lower GV (HbA1c SD: CSII vs MDI 0.5%±0.41% (6±6 mmol/mol) vs 0.7%±0.7% (9±8 mmol/mol)) and CV: CSII vs MDI 6.7%±4.6% (10±10 mmol/mol) vs 9.3%±7.3% (14±13 mmol/mol), both p<0.001. Fifty-six adults (73% female, age 36±13 years, 16±13 years diabetes, HbA1c 7.8%±0.8% (62±9 mmol/mol)) transitioned from MDI to CSII. Mean HbA1c fell by 0.4%. GV from 1 year post-CSII commencement decreased significantly, HbA1c SD pre-CSII versus post-CSII 0.7%±0.5% (8±5 mmol/mol) vs 0.4%±0.4% (5±4 mmol/mol); p<0.001, and HbA1c CV 9.2%±5.5% (13±8 mmol/mol) vs 6.1%±3.9% (9±5 mmol/mol); p<0.001. Conclusions In clinical practice with T1DM adults relative to MDI, CSII therapy is associated with lower HbA1c GV
    • 

    corecore