Stable Algorithm for Extraction of Asymmetries from the Data on Polarized Lepton-Nucleon Scattering

A new algorithm for extraction of asymmetries from polarized lepton-nucleon scattering data is proposed. The algorithm is stable to set-up acceptance and/or luminosity monitor acceptance variations. A statistical test for checking the data quality is proposed.Comment: 10 pages, latex + 4 eps figure

The construction of saturated 2Rk-p designs

Combinatorial and sequential analyses for optimization of saturated design

Atmospheric fungal nanoparticle bursts.

Aerosol nanoparticles play an important role in the climate system by affecting cloud formation and properties, as well as in human health because of their deep reach into lungs and the circulatory system. Determining nanoparticle sources and composition is a major challenge in assessing their impacts in these areas. The sudden appearance of large numbers of atmospheric nanoparticles is commonly attributed to secondary formation from gas-phase precursors, but in many cases, the evidence for this is equivocal. We report the detection of a mode of fungal fragments with a mobility diameter of roughly 30 nm released in episodic bursts in ambient air over an agricultural area in northern Oklahoma. These events reached concentrations orders of magnitude higher than other reports of biological particles and show similarities to unclarified events reported previously in the Amazon. These particles potentially represent a large source of both cloud-forming ice nuclei and respirable allergens in a variety of ecosystems

Effects of Intermittent Pneumatic Compression on Delayed Onset Muscle Soreness (DOMS) in Long Distance Runners

The purpose was to measure the effects of intermittent pneumatic compression (NormaTec, NT) on muscle inflammation after long distance running. Methods: Ten long distance runners, five males and five females, ages 18-55 years performed two, 20 mile runs at 70 VO2 max. The runs were followed by either no treatment (control) or NT treatment for five consecutive days. For the NT run, subjects were treated for one hour immediately following the run and daily for five days after. For the control run, subjects did not receive any treatment. Serum C - reactive protein (CRP), a marker of muscle inflammation, was measured pre and post run and daily thereafter for five days for both trials. Repeated measures ANOVA and two-way ANOVA were used to assess treatment differences. Results: The results indicated no significant difference (P \u3e 0.05) between the control and treatment runs in CRP levels. There was also no gender differences or order effect of runs. Subjective pain ratings indicated no significant difference in pain between the control and treatment runs except when comparing the first run compared to the second run (regardless of whether the first run was a treatment or control run) there was a significant difference in which the subjects experienced less pain on the second run. There was no significant difference in mean weight loss, fluid intake, sweat rate, heart rate, percentage of maximum heart rate, or percentage of maximum VO2 max. There was, however, a significant difference (P = 0.038) in running time when comparing the control run (196.2 minutes) against the treatment run (204.8 minutes). Conclusions: Although the test subjects recovered one day earlier when using the NT device (Day 4) compared to the control (Day 5), this difference was not significan

Effects of Intermittent Pneumatic Compression on Delayed Onset Muscle Soreness (DOMS) in Long Distance Runners

The purpose was to measure the effects of intermittent pneumatic compression (NormaTec, NT) on muscle inflammation after long distance running. Methods: Ten long distance runners, five males and five females, ages 18-55 years performed two, 20 mile runs at 70 VO2 max. The runs were followed by either no treatment (control) or NT treatment for five consecutive days. For the NT run, subjects were treated for one hour immediately following the run and daily for five days after. For the control run, subjects did not receive any treatment. Serum C - reactive protein (CRP), a marker of muscle inflammation, was measured pre and post run and daily thereafter for five days for both trials. Repeated measures ANOVA and two-way ANOVA were used to assess treatment differences. Results: The results indicated no significant difference (P \u3e 0.05) between the control and treatment runs in CRP levels. There was also no gender differences or order effect of runs. Subjective pain ratings indicated no significant difference in pain between the control and treatment runs except when comparing the first run compared to the second run (regardless of whether the first run was a treatment or control run) there was a significant difference in which the subjects experienced less pain on the second run. There was no significant difference in mean weight loss, fluid intake, sweat rate, heart rate, percentage of maximum heart rate, or percentage of maximum VO2 max. There was, however, a significant difference (P = 0.038) in running time when comparing the control run (196.2 minutes) against the treatment run (204.8 minutes). Conclusions: Although the test subjects recovered one day earlier when using the NT device (Day 4) compared to the control (Day 5), this difference was not significan

Effects of Intermittent Pneumatic Compression on Delayed Onset Muscle Soreness (DOMS) in Long Distance Runners

The purpose was to measure the effects of intermittent pneumatic compression (NormaTec, NT) on muscle inflammation after long distance running. Methods: Ten long distance runners, five males and five females, ages 18-55 years performed two, 20 mile runs at 70 VO2 max. The runs were followed by either no treatment (control) or NT treatment for five consecutive days. For the NT run, subjects were treated for one hour immediately following the run and daily for five days after. For the control run, subjects did not receive any treatment. Serum C - reactive protein (CRP), a marker of muscle inflammation, was measured pre and post run and daily thereafter for five days for both trials. Repeated measures ANOVA and two-way ANOVA were used to assess treatment differences. Results: The results indicated no significant difference (P \u3e 0.05) between the control and treatment runs in CRP levels. There was also no gender differences or order effect of runs. Subjective pain ratings indicated no significant difference in pain between the control and treatment runs except when comparing the first run compared to the second run (regardless of whether the first run was a treatment or control run) there was a significant difference in which the subjects experienced less pain on the second run. There was no significant difference in mean weight loss, fluid intake, sweat rate, heart rate, percentage of maximum heart rate, or percentage of maximum VO2 max. There was, however, a significant difference (P = 0.038) in running time when comparing the control run (196.2 minutes) against the treatment run (204.8 minutes). Conclusions: Although the test subjects recovered one day earlier when using the NT device (Day 4) compared to the control (Day 5), this difference was not significan

Consolidated fuel reprossing program: The implications of force reflection for teleoperation in space

Previous research on teleoperator force feedback is reviewed and results of a testing program which assessed the impact of force reflection on teleoperator task performance are reported. Force relection is a type of force feedback in which the forces acting on the remote portion of the teleoperator are displayed to the operator by back-driving the master controller. The testing program compared three force reflection levels: 4 to 1 (four units of force on the slave produce one unit of force at the master controller), 1 to 1, and infinity to 1 (no force reflection). Time required to complete tasks, rate of occurrence of errors, the maximum force applied to tasks components, and variability in forces applied to components during completion of representative remote handling tasks were used as dependent variables. Operators exhibited lower error rates, lower peak forces, and more consistent application of forces using force relection than they did without it. These data support the hypothesis that force reflection provides useful information for teleoperator users. The earlier literature and the results of the experiment are discussed in terms of their implications for space based teleoperator systems. The discussion described the impact of force reflection on task completion performance and task strategies, as suggested by the literature. It is important to understand the trade-offs involved in using telerobotic systems with and without force reflection

Neutron skin of 208Pb, nuclear symmetry energy, and the parity radius experiment

A precise determination of the neutron skin thickness of a heavy nucleus sets a basic constraint on the nuclear symmetry energy (the neutron skin thickness is the difference of the neutron and proton rms radii of the nucleus). The parity radius experiment (PREX) may achieve it by electroweak parity-violating electron scattering (PVES) on 208Pb. We investigate PVES in nuclear mean field approach to allow the accurate extraction of the neutron skin thickness of 208Pb from the parity-violating asymmetry probed in the experiment. We demonstrate a high linear correlation between the parity-violating asymmetry and the neutron skin thickness in successful mean field forces as the best means to constrain the neutron skin of 208Pb from PREX, without assumptions on the neutron density shape. Continuation of the experiment with higher precision in the parity-violating asymmetry is motivated since the present method can support it to constrain the density slope of the nuclear symmetry energy to new accuracy.Comment: 4 pages, 3 figures, some changes in text and references, version to appear in Phys. Rev. Let

The Case for UHP Conditions in the Cuaba Terrane, Río San Juan Metamorphic Complex, Dominican Republic

From the Cuaba terrane in northern Dominican Republic. Ultrahigh pressure (UHP) conditions are indicated for the Cuaba terrane on the basis of phase relationships in garnet-bearing ultramafic rock. Dikes and orthocumulate textures indicate a magmatic origin. Mineral assemblages define a line of descent controlled by fractional crystallization. The original estimate of the magmatic conditions (P>3.4GPa, T>1550°C) was inferred previously from available high-P melting experiments in the CMAS system and high-P experimental determination of the sapphirine-out reaction in the MAS system. Revised estimates of magmatic conditions (P>3.2GPa, T>1500°C) take into account the influence of other components, especially Fe. We propose an origin in the mantle-wedge above a subduction zone. The rock was delivered to the subduction zone by forced convection in the mantle wedge (corner-flow), coupled with erosion of the hanging wall. Thermobarometry indicates >850°C and >3.4GPa when the ultramafic rock was incorporated into eclogite (deep-subducted oceanic crust). Evidence for UHP conditions in the retrograded eclogite is not obvious. Two types of symplectic intergrowths, plagioclase + clinopyroxene (Sym-I) and plagioclase + epidote (Sym-II), are interpreted as the products of the decomposition of two types of omphacite, Omp-I and Omp-II. Theoretically, Omp-II formed as the result of a retrograde reaction of the form, Omp-II + coesite = Omp-I + kyanite + /- garnet, according to which the maximum pressure for Omp-II is between ~2.8GPa (~850°C) and ~4.2GPa (~950°C), consistent with subsolidus conditions for the garnet-bearing ultramafic rocks. For eclogite, the highest-pressure mineral assemblage would have been Omp-I + kyanite + garnet + coesite