Limits on Anomalous WWγWW\gamma Couplings from ppˉ→Wγ+Xp\bar{p} \to W \gamma + X Events at s=1.8\sqrt{s}=1.8 TeV

We have measured the $WW\gamma$ gauge boson coupling parameters using $p\bar{p}\to \ell\nu\gamma+X$ ($\ell=e,\mu$) events at $\sqrt{s}=1.8$ TeV. The data, corresponding to an integrated luminosity of 89.1 pb^{-1}, were collected using the D0 detector at the Fermilab Tevatron Collider. The measured cross section times branching ratio for $p\bar{p} \to W\gamma+X$ with $p_T^\gamma$ > 10 GeV/c and $R_{\ell\gamma} > 0.7$ is ${11.8}^{+1.7}_{-1.6} \pm 2.0$ pb, in agreement with the Standard Model prediction. The one degree of freedom 95% confidence level limits on individual CP-conserving parameters are $-0.98<\Delta\kappa<1.01$ and $-0.33<\lambda<0.31$. Similar limits are set on the CP}violating coupling parameters.Comment: 10 pages, including two figures. Paper submitted to Phys. Rev. Let

ARE WE GETTING FOOLED AGAIN? COMING TO TERMS WITH LIMITATIONS IN THE USE OF PERSONALITY TESTS FOR PERSONNEL SELECTION

We recently published an article in which we highlighted a number of issues associated with the use of self-report personality tests in personnel selection contexts (Morgeson et al., 2007). Both Ones, Dilchert, Viswesvaran, and Judge (2007) and Tett and Christiansen (2007) have written responses to this article. In our response to these articles we address many of the issues raised by Ones et al. and Tett and Christiansen. In addition to a detailed response, we make the following 4 key points: (1) Our criticisms of personality testing apply only to the selection context, not to all research on personality; (2) the observed validities of personality tests predicting job performance criteria are low and have not changed much over time; (3) when evaluating the usefulness of using personality tests to select applicants, one must not ignore the observed, uncorrected validity; and (4) when discussing the value of personality tests for selection contexts, the most important criteria are those that reflect job performance. Implications for personality testing research and practice are discussed. © 2007 BLACKWELL PUBLISHING, INC

Iconic relationships in some halophytic Iranian Chenopodiaceae and their rhizospheres

Matinzadeh Z, Breckle S-W, Mirmassoumi M, Akhani H. Iconic relationships in some halophytic Iranian Chenopodiaceae and their rhizospheres. Plant And Soil. 2013;372(1-2):523-539.Previous studies on the identification of ion relations in halophytes have revealed that many members of Chenopodiaceae accumulate high amounts of sodium and chloride even in soils with low salinity, indicating a typical pattern which is genetically fixed. In this study, we followed up with the question of ion relations in different halophyte species with different photosynthetic pathways and different salt tolerance strategies over a complete growing season. Soil and plant samples from five species Climacoptera turcomanica (Litv.) Botsch. (leaf succulent-C-4), Salicornia persica Akhani subsp. rudshurensis Akhani (stem succulent-C-3), Halimocnemis pilifera Moq. (leaf succulent-C-4), Petrosimonia glauca (Pall.) Bunge (leaf succulent-C-4) and Atriplex verrucifera M. Bieb. (recreto-halophyte-C-3) were collected over a complete growing season from a salt flat 60 km W of Tehran. The contents of main cations (Na+, K+, Ca2+, and Mg2+) and chloride were determined in plant and soil samples. Na+ and Cl- concentration in the shoots of two hygro-halophytes Climacoptera turcomanica and Salicornia persica subsp. rudshurensis were constant over the period of the growing season. In contrast, sodium and chloride in the shoots of Halimocnemis pilifera and Petrosimonia glauca showed respectively an increasing and, in the shoots of Atriplex verrucifera, a decreasing, trend. We did not notice any decreasing trend of K+ together with increasing trend of Na+ in the shoots of the studied species; however K+ in the shoots of all examined species was considerably lower than Na+ and Cl-. It was observed that Climacoptera and Salicornia could absorb and retain calcium even in high salinity conditions, while Halimocnemis and Petrosimonia could not. Na+, K+, Cl-, Ca2+, and Mg2+ contents in the shoots of different types of halophytes (stem-succulent, leaf-succulent and excreting halophyte) or different type of photosynthesis (C-3, C-4) are independent of those in their rhizosphere. We concluded that it is controlled by the genetic characteristic of the specific taxon rather than by the environment