628 research outputs found
Forage yield of unfertilized perennial crops in simple and complex mixtures under two management strategies in northeastern Saskatchewan
Non-Peer ReviewedA field experiment was sown on May 27, 2008 at Melfort, Saskatchewan (52O44âN 104O47âW) on a thick Black Chernozem (Udic Boroll) silty clay soil to compare the effects of perennial forage crop monocultures and mixtures on dry matter yield (DMY) under two-cut and three-cut management systems in 2009, 2010 and 2011. The 11 treatments were consisted of monocultures of alfalfa, crested wheatgrass, hybrid
bromegrass, intermediate wheatgrass, smooth bromegrass and in mixtures with alfalfa; a more complex mixture of smooth and hybrid bromegrass, intermediate and crested wheatgrass and alfalfa, and finally a very complex mixture consisting of the complex mixture plus orchardgrass, tall fescue, timothy, meadow bromegrass and slender wheatgrass. The alfalfa was inoculated with rhizobium, and no fertilizer was added to any treatment during the course of this study. In 2009, the first cutting year, all treatments
produced similar forage DMY, with the monoculture grasses yielding almost as much as that of their mixture with alfalfa. In 2010 and 2011, monoculture alfalfa was the highest yielding treatment under both two and three cut methods. The two cut system yielded higher in all years for both treatments, except alfalfa in 2010. The complex and very complex mixtures yielded higher than the monoculture grass treatments, but did not yield higher than the simple alfalfa grass mixtures or the monoculture alfalfa treatment. In conclusion, the inclusion of alfalfa in unfertilized grass mixtures increased forage yield,
especially after the first year
Comparative forage yield and species composition of âpoorâ versus âgoodâ condition grass stands under different soil fertility regimes in northeastern Saskatchewan
Non-Peer Reviewe
Gender Differences in Perceptions of Organizational Cultures in the Banking Industry in Taiwan
Observation of Scaling Violations in Scaled Momentum Distributions at HERA
Charged particle production has been measured in deep inelastic scattering
(DIS) events over a large range of and using the ZEUS detector. The
evolution of the scaled momentum, , with in the range 10 to 1280
, has been investigated in the current fragmentation region of the Breit
frame. The results show clear evidence, in a single experiment, for scaling
violations in scaled momenta as a function of .Comment: 21 pages including 4 figures, to be published in Physics Letters B.
Two references adde
D* Production in Deep Inelastic Scattering at HERA
This paper presents measurements of D^{*\pm} production in deep inelastic
scattering from collisions between 27.5 GeV positrons and 820 GeV protons. The
data have been taken with the ZEUS detector at HERA. The decay channel
(+ c.c.) has been used in the study. The
cross section for inclusive D^{*\pm} production with
and is 5.3 \pms 1.0 \pms 0.8 nb in the kinematic region
{ GeV and }. Differential cross
sections as functions of p_T(D^{*\pm}), and are
compared with next-to-leading order QCD calculations based on the photon-gluon
fusion production mechanism. After an extrapolation of the cross section to the
full kinematic region in p_T(D^{*\pm}) and (D^{*\pm}), the charm
contribution to the proton structure function is
determined for Bjorken between 2 10 and 5 10.Comment: 17 pages including 4 figure
John Lathamâs cosmos and mid-century representation
The conceptual artist John Latham (1921 â 2006) is sometimes cast as disconnected to the currents of British visual culture. Lathamâs idiosyncratic cosmology based upon time and events and incorporating human creativity rather than matter and energy is used to distinguish this disconnection. However, this paper argues that his work can be seen as closely related to that of other mid-century cultural producers who were engaged with alternative cosmic speculations, and part of a broader shift in the register of representation. Papers from the Latham digital archive help make this case
Psychological benefits of weight loss following behavioural and/or dietary weight loss interventions. A systematic research review
It is generally accepted that weight loss has significant physiological benefits, such as reduced risk of diabetes, lowered blood pressure and blood lipid levels. However, few behavioural and dietary interventions have investigated psychological benefit as the primary outcome. Hence, systematic review methodology was adopted to evaluate the psychological outcomes of weight loss following participation in a behavioural and/or dietary weight loss intervention in overweight/obese populations. 36 Studies were selected for inclusion and were reviewed. Changes in self-esteem, depressive symptoms, body image and health related quality of life (HRQoL) were evaluated and discussed. Where possible, effect sizes to indicate the magnitude of change pre- to post- intervention were calculated using Hedgesâ g standardised mean difference. The results demonstrated consistent improvements in psychological outcomes concurrent with and sometimes without weight loss. Improvements in body image and HRQoL (especially vitality) were closely related to changes in weight. Calculated effect sizes varied considerably and reflected the heterogeneous nature of the studies included in the review. Although the quality of the studies reviewed was generally acceptable, only 9 out of 36 studies included a suitable control/comparison group and the content, duration of intervention and measures used to assess psychological outcomes varied considerably. Further research is required to improve the quality of studies assessing the benefits of weight loss to fully elucidate the relationship between weight loss and psychological outcomes.The Kellogg Company, The Kellogg Building, Talbot Road, Manchester M16 0PU, U
Energy Flow in the Hadronic Final State of Diffractive and Non-Diffractive Deep-Inelastic Scattering at HERA
An investigation of the hadronic final state in diffractive and
non--diffractive deep--inelastic electron--proton scattering at HERA is
presented, where diffractive data are selected experimentally by demanding a
large gap in pseudo --rapidity around the proton remnant direction. The
transverse energy flow in the hadronic final state is evaluated using a set of
estimators which quantify topological properties. Using available Monte Carlo
QCD calculations, it is demonstrated that the final state in diffractive DIS
exhibits the features expected if the interaction is interpreted as the
scattering of an electron off a current quark with associated effects of
perturbative QCD. A model in which deep--inelastic diffraction is taken to be
the exchange of a pomeron with partonic structure is found to reproduce the
measurements well. Models for deep--inelastic scattering, in which a
sizeable diffractive contribution is present because of non--perturbative
effects in the production of the hadronic final state, reproduce the general
tendencies of the data but in all give a worse description.Comment: 22 pages, latex, 6 Figures appended as uuencoded fil
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