Nanocrystalline iron at high pressure

X-ray diffraction measurements were performed on nanocrystalline iron up to 46 GPa. For nanocrystalline epsilon-Fe, analysis of lattice parameter data provides a bulk modulus, K, of 179±8 GPa and a pressure derivative of the bulk modulus, K[prime], of 3.6±0.7, similar to the large-grained control sample. The extrapolated zero-pressure unit cell volume of nanocrystalline epsilon-Fe is 22.9±0.2 Å^3, compared to 22.3±0.2 Å^3 for large-grained epsilon-Fe. No significant grain growth was observed to occur under pressure

Emotion Regulation Tendencies Moderate Momentary Associations Between Sadness, Binge Urges, and Overeating

Background: Eating disorders (EDs) are notably adverse, and previous research emphasizes that analysis of momentary triggers may be useful in determining the factors that maintain ED psychopathology. Negative affect (NA) is one momentary trigger of special interest in regard to binge eating tendencies. While current literature differs on the precise mechanisms by which NA maintains ED psychopathology, emotional regulation has been nevertheless implicated in encouraging binge eating behaviors. The present study explores correlations among sadness, binge urges, and overeating, and assesses emotional avoidance and emotional awareness as potential moderators of these relationships. Method: Participants (N = 34) with moderate to severe depression were recruited from across the United States. Participants completed baseline measures at onset followed by four ecological momentary assessments per day sent to their mobile phones for 20 days. The relationships among sadness, binge urges, and overeating were tested through multilevel modeling in R. Results: Within- and between-person sadness levels were each significantly associated with momentary urges to binge eat and overeating. Emotional awareness was nonsignificant, while emotional avoidance emerged as a significant moderator of these relationships. Discussion: These findings provide support for the affect regulation model of binge eating and for the escape theory, centralizing the role of sadness in maintenance of binge eating psychopathology. Targeting emotional avoidance and testing exposure to aversive emotions should be considered for their efficacy in treatment. Future research should assess these relationships in the ED population and more extensively analyze the interactions between NA and emotional avoidance

Hunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4.7 fb−1 of s√=7TeV proton-proton collisions

Results are presented of a search for new particles decaying to large numbers of jets in association with missing transverse momentum, using 4.7 fb−1 of pp collision data at s√=7TeV collected by the ATLAS experiment at the Large Hadron Collider in 2011. The event selection requires missing transverse momentum, no isolated electrons or muons, and from ≥6 to ≥9 jets. No evidence is found for physics beyond the Standard Model. The results are interpreted in the context of a MSUGRA/CMSSM supersymmetric model, where, for large universal scalar mass m 0, gluino masses smaller than 840 GeV are excluded at the 95% confidence level, extending previously published limits. Within a simplified model containing only a gluino octet and a neutralino, gluino masses smaller than 870 GeV are similarly excluded for neutralino masses below 100 GeV