2,461 research outputs found

    The Effect of Whey Protein Supplementation at Breakfast on Tryptophan Levels, Food Intake, and Mood in Postmenopausal Women in a 16-Week Randomized Controlled Trial

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    Whey protein isolate supplementation has been recognized as having potential for regulating appetite, thereby potentially improving mood and food intake. The objectives of this project were to 1) analyze the effects of high-quality whey protein intake on overall diet and 2) identify and examine a correlation between tryptophan levels and mood regulation. This research was conducted using a randomized experimental design. A total of 13 postmenopausal women (12+ months after last reported menstrual cycle) were recruited and allocated to one of two dietary intervention (DI) groups: 1) control (maintain current lifestyle; CON; n = 6), and 2) whey protein isolate (WPI; 25 g; n = 7). Protein was consumed prior to 10:00 AM daily. Both interventions were followed daily for 16 weeks. All laboratory visits required participants to arrive fasted with complete 3-day dietary logs. Participants completed the Pittsburgh Sleep Quality Index (PSQI) and Profile of Moods Questionnaire. Height, weight, and waist-to-hip ratio were measured. A blood draw was administered to assess sleep and metabolic blood markers. A one-way repeated measures analysis of variance (ANOVA) was used to assess the differences in body mass index (BMI) and Profile of Mood States (POMS). One-way ANOVA was used to calculate the POMS Total Mood Disturbance scores. Clinical biomarker differences were determined through repeated-measures ANOVA (statistically significant: P \u3c 0.05). Prism GraphPad Software v. 9.0 (La Jolla, California) was used for all analyses. Results were inconclusive. We found no correlation between daily whey protein isolate supplementation and tryptophan levels, overall diet, or mood regulation

    Factors that affect the uptake of community-based health insurance in low-income and middle-income countries : a systematic protocol

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    Many people residing in low-income and middle-income countries (LMICs) are regularly exposed to catastrophic healthcare expenditure. It is therefore pertinent that LMICs should finance their health systems in ways that ensure that their citizens can use needed healthcare services and are protected from potential impoverishment arising from having to pay for services. Ways of financing health systems include government funding, health insurance schemes and out-of-pocket payment. A health insurance scheme refers to pooling of prepaid funds in a way that allows for risks to be shared. The health insurance scheme particularly suitable for the rural poor and the informal sector in LMICs is community-based health insurance (CBHI), that is, insurance schemes operated by organisations other than governments or private for-profit companies. We plan to search for and summarise currently available evidence on factors associated with the uptake of CBHI, as we are not aware of previous systematic reviews that have looked at this important topic

    Recreational snow-sports injury risk factors and countermeasures: a meta-analysis review and Haddon Matrix Evaluation

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    Background: Snow sports (alpine skiing/snowboarding) would benefit from easily implemented and cost-effective injury prevention countermeasures that are effective in reducing injury rate and severity. Objective: For snow sports, to identify risk factors and to quantify evidence for effectiveness of injury prevention countermeasures. Methods: Searches of electronic literature databases to February 2014 identified 98 articles focused on snow sports that met the inclusion criteria and were subsequently reviewed. Pooled odds ratios (ORs) with 90 % confidence intervals (CIs) and inferences (percentage likelihood of benefit/harm) were calculated using data from 55 studies using a spreadsheet for combining independent groups with a weighting factor based on quality rating scores for effects. Results: More experienced skiers and snowboarders are more likely to sustain an injury as a result of jumps, while beginners sustain injuries primarily as a result of falls. Key risk factors that countermeasure interventions should focus on include, beginner skiers (OR 2.72; 90 % CI 2.15–3.44, 99 % most likely harmful), beginner snowboarders (OR 2.66; 90 % CI 2.08–3.40, 99 % harmful), skiers/snowboarders who rent snow equipment (OR 2.58; 90 % CI 1.98–3.37, 99 % harmful) and poor visibility due to inclement weather (OR 2.69; 90 % CI 1.43–5.07, 97 % harmful). Effective countermeasures include helmets for skiers/snowboarders to prevent head injuries (OR 0.58; 90 % CI 0.51–0.66, 99 % most likely beneficial), and wrist guards for snowboarders to prevent wrist injuries (OR 0.33; 90 % CI 0.23–0.47, 99 % beneficial). Discussion: The review identified key risk factors for snow-sport injuries and evaluated the evidence for the effectiveness of existing injury prevention countermeasures in recreational (general public use of slopes, not racing) snow sports using a Haddon’s matrix conceptual framework for injury causation (host/snow-sport participant, agent/mechanism and environment/community). Conclusion: Best evidence for the effectiveness of injury prevention countermeasures in recreational snow sports was for the use of helmets and wrist guards and to address low visibility issues via weather reports and signage

    LHC On-Line Model

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    The LHC machine will be a very demanding accelerator from a beam control perspective. There are tight constraints on the key beam parameters in the presence of large non-linearities and dynamic persistent current effects. Particle loss in the LHC must be actively minimized to avoid damage to the machine. Therefore any adjustment to the machine parameters would ideally be checked beforehand with a proper modeling tool. The LHC On-Line Model is an attempt to provide such an analysis tool based mainly on the MAD-X code. The goal is not to provide a real-time interactive system to control the LHC, but rather a way to speed up interaction with the power of MAD-X and to facilitate off-line analysis to give results within appropriate time constraints. There will be a rich spectrum of potential applications such as closed orbit correction, beta-beating analysis, optimization of non-linear correction and knob settings. We report the status of the on-line model software which is at present being developed for the beginning of the LHC commissioning

    High pT correlations with strange particles in STAR

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    We present the highlights of the current identified strange particles DeltaPhi and DeltaEta correlations analyses, including system-size and trigger-pT of the jet and ridge, jet, ridge and away-side meson/baryon ratios, and the current state of the multi-strange baryon analysis. We see clear azimuthal peaks of comparable strength for all strange baryons and K0-short mesons. We see no observable species dependence on the same-side jet or ridge yields as a function of pT. However, while the away side and the ridge have Lambda to K0-short ratio similar to that of the bulk, the jet-only ratio is similar to that in p+pp+p. The implications of these findings on current in-medium jet theoretical explanations are discussed.Comment: Proceedings for the Strangeness in Quark Matter 2007 Conference in Levoca, Slovaki

    Photoelectron diffraction investigation of the structure of the clean TiO2(110)(1×1) surface

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    The surface relaxations of the rutile TiO2(110)(1×1) clean surface have been determined by O 1 s and Ti 2p3∕2 scanned-energy mode photoelectron diffraction. The results are in excellent agreement with recent low-energy electron diffraction (LEED) and medium energy ion scattering (MEIS) results, but in conflict with the results of some earlier investigations including one by surface x-ray diffraction. In particular, the bridging O atoms at the surface are found to relax outward, rather than inward, relative to the underlying bulk. Combined with the recent LEED and MEIS results, a consistent picture of the structure of this surface is provided. While the results of the most recent theoretical total-energy calculations are qualitatively consistent with this experimental consensus, significant quantitative differences remain

    Association of Marek’s Disease with Ea-B and Immune Response Genes in Subline and F2 Populations of the Iowa State S1 Leghorn Line

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    Chickens from the Iowa State S1 White Leghorn line, selected for characteristics of Ea-B serotype, humoral immune response to glutamic acid-alanine-tyrosine (Ir-GAT), and response to Rous sarcoma virus (RSV)-induced tumors, were evaluated for genetic resistance to Marek’s disease (MD). In the first two trials, sublines that were triple homozygous for the three traits were challenged with MD virus. Birds of the B1B1 blood type were significantly (P\u3c.001) more resistant to MD than chickens of the B19B19 blood type. High responders to GAT were significantly (P\u3c.001) more resistant to MD virus than low responders. The RSV classification had no detectable association with MD resistance. Chickens challenged with MD virus in the third trial were an F2 population produced from inter se matings of S1 chickens heterozygous for the three traits under selection. Data from this trial confirmed increased MD resistance of chickens possessing the B1B1 blood type when associated with genes encoding high immune response to GAT

    The local adsorption structure of benzene on Si(001)-(2 × 1): a photoelectron diffraction investigation

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    Scanned-energy mode C 1s photoelectron diffraction has been used to investigate the local adsorption geometry of benzene on Si(001) at saturation coverage and room temperature. The results show that two different local bonding geometries coexist, namely the 'standard butterfly' (SB) and 'tilted bridge' (TB) forms, with a composition of 58 ± 29% of the SB species. Detailed structural parameter values are presented for both species including Si–C bond lengths. On the basis of published measurements of the rate of conversion of the SB to the TB form on this surface, we estimate that the timescale of our experiment is sufficient for achieving equilibrium, and in this case our results indicate that the difference in the Gibbs free energy of adsorption, ΔG(TB)−ΔG(SB), is in the range −0.023 to +0.049 eV. We suggest, however, that the relative concentration of the two species may also be influenced by a combination of steric effects influencing the kinetics, and a sensitivity of the adsorption energies of the adsorbed SB and TB forms to the nature of the surrounding benzene molecules

    Summary of the LHC Controls and Operations Forum held at CERN on 1-2 December 1999

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    The LHC Controls-Operations Forum in December attempted to identify the challenges of running the LHC and the implications for controls and equipment. An outline of the forum, its objectives, summaries of the various sessions, conclusions and some recommendations are presented. It is anticipated that this information will act as input into current and future development
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