24 research outputs found

    Measurement of differential cross sections for the production of a pair of isolated photons in pp collisions at s=7TeV

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    A measurement of differential cross sections for the production of a pair of isolated photons in proton–proton collisions at √s=7TeV is presented. The data sample corresponds to an integrated luminosity of 5.0fb-1 collected with the CMS detector. A data-driven isolation template method is used to extract the prompt diphoton yield. The measured cross section for two isolated photons, with transverse energy above 40 and 25GeV respectively, in the pseudorapidity range |η|0.45, is 17.2±0.2(stat)±1.9(syst)±0.4(lumi)pb. Differential cross sections are measured as a function of the diphoton invariant mass, the diphoton transverse momentum, the azimuthal angle difference between the two photons, and the cosine of the polar angle in the Collins–Soper reference frame of the diphoton system. The results are compared to theoretical predictions at leading, next-to-leading, and next-to-next-to-leading order in quantum chromodynamics

    Measurement of the Z boson differential cross section in transverse momentum and rapidity in proton-proton collisions at 8 TeV

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    Training Women To Be More Assertive in Mixed-Sex Task-Oriented Discussions 1

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    This study tests the effectiveness of assertiveness training in increasing the level of women's participation in a small mixed-sex task-oriented discussion. Undergraduate women who met both self-descriptive and behavioral criteria for low activity participated with three active under-graduates in a pretest and posttest discussion, each with a different topic and with nonoverlapping group membership, as well as in either an ex-perimental or a control intervention. Experimental subjects received behavioral training in assertiveness while functioning essentially as a fifth member of several tape-recorded discussions. Assertiveness training was successful, with experimental subjects differing from controls on dependent measures reflecting three independent sources of information: (a) the subject's own behavior, as coded by an experimental assistant; (b) pretest and postttest group members ' perceptions of the subject's behavior; and (c) the subject's perceptions of her own behavior. These results are inter-preted as consistent with the view that a lack of assertiveness in the presence of men-rather than any lack of substantive knowledge or conceptual skill-depresses women's participation in mixed-sex discussions. ~This article is based upon a doctoral dissertation by Hedva Lewittes, submitted to th

    Hindgut microbiota in laboratory-reared and wild Triatoma infestans.

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    Triatomine vectors transmit Trypanosoma cruzi, the etiological agent of Chagas disease in humans. Transmission to humans typically occurs when contaminated triatomine feces come in contact with the bite site or mucosal membranes. In the Southern Cone of South America, where the highest burden of disease exists, Triatoma infestans is the principal vector for T. cruzi. Recent studies of other vector-borne illnesses have shown that arthropod microbiota influences the ability of infectious agents to colonize the insect vector and transmit to the human host. This has garnered attention as a potential control strategy against T. cruzi, as vector control is the main tool of Chagas disease prevention. Here we characterized the microbiota in T. infestans feces of both wild-caught and laboratory-reared insects and examined the relationship between microbial composition and T. cruzi infection using highly sensitive high-throughput sequencing technology to sequence the V3-V4 region of the 16S ribosomal RNA gene on the MiSeq Illumina platform. We collected 59 wild (9 with T. cruzi infection) and 10 lab-reared T. infestans (4 with T. cruzi infection) from the endemic area of Arequipa, Perú. Wild T. infestans had greater hindgut bacterial diversity than laboratory-reared bugs. Microbiota of lab insects comprised a subset of those identified in their wild counterparts, with 96 of the total 124 genera also observed in laboratory-reared insects. Among wild insects, variation in bacterial composition was observed, but time and location of collection and development stage did not explain this variation. T. cruzi infection in lab insects did not affect α- or β-diversity; however, we did find that the β-diversity of wild insects differed if they were infected with T. cruzi and identified 10 specific taxa that had significantly different relative abundances in infected vs. uninfected wild T. infestans (Bosea, Mesorhizobium, Dietzia, and Cupriavidus were underrepresented in infected bugs; Sporosarcina, an unclassified genus of Porphyromonadaceae, Nestenrenkonia, Alkalibacterium, Peptoniphilus, Marinilactibacillus were overrepresented in infected bugs). Our findings suggest that T. cruzi infection is associated with the microbiota of T. infestans and that inferring the microbiota of wild T. infestans may not be possible through sampling of T. infestans reared in the insectary

    A Controlled, Randomized-Blinded Clinical Trial to Assess the Efficacy of a Nitric Oxide Releasing Patch in the Treatment of Cutaneous Leishmaniasis by Leishmania (V.) panamensis

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    A topical nanofiber nitric oxide (NO) releasing patch (≈3.5 μmol NO/cm2/day for 20 days, NOP) was compared with intramuscular meglumine antimoniate (Glucantime, 20 mg/kg/day for 20 days) for the treatment of cutaneous leishmaniasis (CL) caused by Leishmania (V.) panamensis in Santander and Tolima, Colombia. A double-blind, randomized, placebo-controlled, clinical trial was conducted to determine whether the NOP is as effective as Glucantime for the treatment of CL. Patients were randomly assigned to Glucantime and placebo patches or NOP and placebo of Glucantime. The cure rates after a 3-month follow-up were 94.8% for the group that received Glucantime compared with 37.1% in the NOP group. Despite the lower efficacy of the NOP versus Glucantime, a significantly lower frequency of non-serious adverse events and a reduced variation in serum markers were observed in patients treated with NOP. Treatment of CL with NOP resulted in a lower effectiveness compared with Glucantime; however, the low frequency of adverse events and the facility of topic administration justify the development of new generations of NOP systems for the treatment of CL

    Feminist Theory, Feminist Psychology: A Bibliography Of Epistemology, Critical Analysis, And Applications

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    A selection of recent (post-1980) works on feminist theory and method, this bibliography includes literature from psychology and other social sciences, feminist studies, and philosophy of science. The first of its four sections concerns epistemology and metatheory. The second lists works that offer reformulations or critical analyses of key concepts in gender studies; many of these are grounded in social constructionist and feminist standpoint epistemologies. The third section cites writings that illustrate the potential of new epistemological stances or exemplify new ways of working. The last section lists related bibliographies. (232 entries.
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