1,060 research outputs found

    Annual radial growth cycle of grapevine trunk in the tropics

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    The annual radial trunk growth cycle in V. vinifera var. Anab-e-Shahi was studied in the tropics where the vines are pruned twice a year. Although vines grow continuously without any period of dormancy, a consistant pattern of maximum girth increment from April to September altemating with negligible increment from October to March was observed. The rate of annual girth increment was high during juvenile period and steadily decreased later. There is further need to study the physiology of growth and fruiting of tropical grapevines under conditions of nondormancy as modified by two prunings in a year.Der jährliche Wachstumszyklus der Stammdicke von Reben in den TropenDie Rebensorte Anab-e-Shahi (Vitis vinifera) wird in den Tropen jährlich zweimal geschnitten. Der jährliche Wachstumszyklus der Stammdicke unter diesen Bedingungen wurde untersucht. Obgleich die Reben kontinuierlich - ohne jede Ruheperiode - wachsen, wurde durchweg von April bis September ein maximaler Zuwachs des Stammumfanges und von Oktober bis März nur ein unbedeutendes Dickenwachstum festgestellt. Die jährliche Zuwachsrate des Stammumfanges war beim jungen Weinstock hoch; später nahm sie ständig ab. Weitere Untersuchungen zur Physiologie des Wachstums und der Fruchtentwicklung von Reben unter tropischen Bedingungen, d. h. ohne Zwischenschaltung einer Ruheperiode und modifiziert durch zweimaligen Rebschnitt, sind erforderlich

    A dramatic, objective antiandrogen withdrawal response: case report and review of the literature

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    Antiandrogen withdrawal response is an increasingly recognized entity in patients with metastatic prostate cancer. To our knowledge, there have been no reports describing a durable radiologic improvement along with prostate-specific antigen (PSA) with discontinuation of the antiandrogen agent bicalutamide. We report a case in which a dramatic decline of serum PSA levels associated with a dramatic improvement in radiologic disease was achieved with bicalutamide discontinuation

    THE ACCUSED IS ENTERING THE COURTROOM: THE LIVE-TWEETING OF A MURDER TRIAL.

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    © 2017 Informa UK Limited, trading as Taylor & Francis GroupThe use of social media is now widely accepted within journalism as an outlet for news information. Live tweeting of unfolding events is standard practice. In March 2014, Oscar Pistorius went on trial in the Gauteng High Court for murder. Hundreds of journalists present began live-tweeting coverage, an unprecedented combination of international interest, permission to use technology and access which resulted in massive streams of consciousness reports of events as they unfolded. Based on a corpus of Twitter feeds of twenty-four journalists covering the trial, this study analyses the content and strategies of these feeds in order to present an understanding of how microblogging is used as a live reporting tool. This study shows the development of standardised language and strategies in reporting on Twitter, concluding that journalists adopt a narrow range of approaches, with no significant variation in terms of gender, location, or medium. This is in contrast to earlier studies in the field (Awad, 2006, Hedman, 2015; Kothari, 2010; Lariscy, Avery, Sweetser, & Howes, 2009 Lasorsa, 2012; Lasorsa, Lewis, & Holton, 2011; Sigal, 1999, Vis, 2013).Peer reviewe

    Polymeric Nanoparticle Receptors as Synthetic Antibodies for Nonsteroidal Anti-Inflammatory Drugs (NSAIDs)

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    The wide usage and subsequent leakage of nonsteroidal anti-inflammatory drugs (NSAIDs) into the environment present an urgent need to create materials for selective binding of NSAID drugs, which are highly similar to one another in structure and functionality. Surface–core double-cross-linking of cationic micelles containing Naproxen or Indomethacin as the template yielded molecularly imprinted nanoparticles (MINPs) for these drugs. The nanoparticle receptors resembled water-soluble proteins in their hydrophilic exterior and hydrophobic core with guest-tailored binding pockets. Their binding selectivity for their templates over other NSAID analogues rivaled that of antibodies prepared through much lengthier procedures

    A condensed matter interpretation of SM fermions and gauge fields

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    We present the bundle Aff(3) x C x /(R^3), with a geometric Dirac equation on it, as a three-dimensional geometric interpretation of the SM fermions. Each C x /(R^3) describes an electroweak doublet. The Dirac equation has a doubler-free staggered spatial discretization on the lattice space Aff(3) x C (Z^3). This space allows a simple physical interpretation as a phase space of a lattice of cells in R^3. We find the SM SU(3)_c x SU(2)_L x U(1)_Y action on Aff(3) x C x /(R^3) to be a maximal anomaly-free special gauge action preserving E(3) symmetry and symplectic structure, which can be constructed using two simple types of gauge-like lattice fields: Wilson gauge fields and correction terms for lattice deformations. The lattice fermion fields we propose to quantize as low energy states of a canonical quantum theory with Z_2-degenerated vacuum state. We construct anticommuting fermion operators for the resulting Z_2-valued (spin) field theory. A metric theory of gravity compatible with this model is presented too.Comment: Minimal modifications in comparison with the published versio

    Bedside nurses\u27 perceptions of effective nurse-physician communication in general medical units: A qualitative study

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    Background There is a dearth of research on successful interventions to improve nurse-physician communication (NPC). An important step is identifying what matters to bedside nurses and their perceptions of effective NPC communications and actions. Methods We conducted three focus groups with a total of 19 medical unit nurses across two hospitals in one academic medical center in the United States. Using a convenience sampling strategy, five to eight nurses voluntarily participated in each focus group. The recording was transcribed verbatim and two independent coders performed coding and resolved any discrepancies in codes. Qualitative content analysis was pursued to identify themes and associated quotes. Results The presence of direct communication between physicians and nurses was identified as the first theme and perceived by nurses as very important. Additional themes related to physician communication and attributes emerged including collegiality and respect (e.g., engaging nurses as partners in patient care), attentiveness and responsiveness (e.g., listening carefully and addressing concerns), and directness and support (e.g., backing nurses up in difficult situations). Effective NPC is further facilitated by organizational structure, relationship development separate from patient care, and consistent/timely use of technology. Conclusions Hospital bedside nurses provided valuable insight into improved physician communication and what attributes contribute to more effective NPC. Most importantly, they emphasized the significance of physicians in supporting them with difficult patients

    Flavor mixing in the gluino coupling and the nucleon decay

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    Flavor mixing in the quark-squark-gluino coupling is studied for the minimal SU(5) SUGRA-GUT model and applied to evaluation of the nucleon lifetime. All off-diagonal (generation mixing) elements of Yukawa coupling matrices and of squark/slepton mass matrices are included in solving numerically one-loop renormalization group equations for MSSM parameters, and the parameter region consistent with the radiative electroweak symmetry breaking condition is searched. It is shown that the flavor mixing in the gluino coupling for a large tanβ\tan\beta is of the same order of magnitude as the corresponding Kobayashi-Maskawa matrix element in both up-type and down-type sector. There exist parameter regions where the nucleon decay amplitudes for charged lepton modes are dominated by the gluino dressing process, while for all the examined regions the neutrino mode amplitudes are dominated by the wino dressing over the gluino dressing.Comment: 24 pages, LaTeX, figures are available upon request. ICRR-Report-317-94-1
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