837 research outputs found

    Spectral signature of short attosecond pulse trains

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    We report experimental measurements of high-order harmonic spectra generated in Ar using a carrier-envelope-offset (CEO) stabilized 12 fs, 800nm laser field and a fraction (less than 10%) of its second harmonic. Additional spectral peaks are observed between the harmonic peaks, which are due to interferences between multiple pulses in the train. The position of these peaks varies with the CEO and their number is directly related to the number of pulses in the train. An analytical model, as well as numerical simulations, support our interpretation

    Franchise Law

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    This article is a survey of the relevant developments in franchise law from December 1, 2019, through November 30, 2020. The article focuses on law likely to be influential to Texas practitioners

    Impact of Protein Supplements on Muscle Recovery After Exercise-induced Muscle Soreness

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    The intent of this study was to determine whether nutritional supplements [protein (0.4 g·kg−1) vs. carbohydrate (0.4 g·kg−1) vs. placebo] would affect muscle recovery differently after eccentric exercise-induced muscle soreness in untrained healthy young men (n = 21) aged 20-28 years. During this double-blind randomized block study design, each subject completed three, 3-day trials (separated by = 2 weeks), identical except for treatment, with each subject serving as his own control. Trials began with a bout of right-leg eccentric exercise (Biodex), followed directly by treatment. At 0 (baseline), 24 and 48 hours, data were collected: creatine phosphokinase from pre-exercise blood samples, subjective muscle soreness questions, and strength tests (power, torque, work). ANOVA indicated that exercise caused mild muscle damage, as evidenced by an overall day effect (p = 0.0001) for muscle soreness, with the lowest median values (0-10 scale) on day 1 (0.7), increasing (p = 0.0001) on day 2 (3.2), and remaining elevated on day 3 (3.4). We also noted an overall day effect (p = 0.0001) for creatine phosphokinase, with the lowest median values on day 1 (136 U·L-1), increasing (p = 0.0001) on day 2 (235 U·L-1), and remaining elevated on day 3 (189 U·L-1). ANOVA revealed no significant treatment effect on indicators of soreness or damage during recovery. Our results indicated that protein or carbohydrate supplement after exercise that caused mild muscle damage did not facilitate muscle recovery in adequately nourished, healthy young men

    Outcomes of Childhood Aggression in Women

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75752/1/j.1749-6632.1996.tb32553.x.pd

    A synthesis of evidence for cancer-specific screening interventions : A Preventive Medicine Golden Jubilee Review

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    The goal of cancer screening guidelines is to inform health practitioners to practice evidence-based cancer prevention. Cancer screening aims to detect treatable precancerous lesions or early-stage disease to enable actions aimed at decreasing morbidity and mortality. Continuous assessment of the available evidence for or against screening interventions by various organizations often results in conflicting recommendations and create challenges for providers and policymakers. Here we have summarized the current cancer screening recommendations by five leading organizations in North America and Europe: the National Cancer Institute's Physician Data Query (PDQ), the U.S. Preventive Services Task Force (USPSTF), the Canadian Task Force on Preventive Health Care (CTFPHC), the Cochrane Database of Systematic Reviews (CDSR), and the UK National Screening Committee for the National Health Service (UK NSC). All organizations assess evidence based on strength, quality, and quantity, and recommendations are similar although with differences with respect to screening start and stop ages. Recommendations are consistent for colorectal cancer screening with fecal occult blood test or fecal immunochemical test, cervical cancer screening with Pap-test, HPV-test, or co-testing, and breast cancer screening with mammography. However, guidelines vary with respect to age to start and end screening and testing frequency. Tests that have proven to be inefficient or whose use is capable of causing harm are routinely recommended against. Continuous review of screening guidelines is necessary to evaluate the many promising screening tests currently under investigation.publishedVersionPeer reviewe
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