2,679 research outputs found
The physiology of plant hormones in cereal, oilseed and pulse crops
No full textPlant hormones regulate virtually all aspects of plant growth and development, as well as plant responses to biotic and abiotic signals. Herein, we discuss three hormone groups, gibberellins, auxin and ethylene. These plant hormones influence seed germination, root, stem and leaf growth, flowering, and fruit and seed growth. In so doing, the hormone groups often interact with each other and with the plant’s environment. This review discusses the regulatory roles that these three plant hormone groups play in the physiology of cereal, oilseed and pulse crops and also discusses the usefulness of applications of hormones, and of other plant growth regulators. Additionally, it discusses the potential uses of plant growth promoting rhizosphere (root-zone) microorganisms (PGPRs) in order to obtain yield improvement, or to alleviate abiotic stress
Feasibility Study : Case: Sup Online Rental Service
No full textThe main idea of the bachelor’s thesis was to conduct a feasibility research for a start-up enterprise «SUP Online Rental Service». Chosen business activity will be stablished in South of Finland in the town near the Helsinki – Söderkulla, by the author of this thesis who plans to establish himself as an entrepreneur.
The proposed start-up enterprise aims to provide a SUP (Stand Up Paddle Boarding) rental service for residents and tourists in Sipoo municipality. Only a handful of recreational activities are available in Sipoo. Especially, Söderkulla town area is attracting for chosen leisure service due to rich amount of beautiful lakes and an exit to Gulf of Finland. Therefore, the situation considered to be a great opportunity by author, and greatly benefits the development of tourism sector in Sipoo area.
Primary data was collected through online market survey and covered total number of 108 complete responses from residents of Sipoo. Survey’s data was served as a main source of information for the success of the study as the secondary data on chosen service almost not existing in Finland due to the fact it is particularly new leisure service.
To provide a realistic and valuable feasibility study, the author investigates the viability of the business idea, and analyzed its industry, market, customers and competitors, as well as external and internal business environment factors and financials. All these data will determine whether the author’s business idea has an opportunity to evolve into a start-up enterprise, or not.
The conclusion of feasibility study allows the reader to consider the possibility of success or failure of the proposed start-up enterprise. The feasibility study also will be an assisting tool for creating a business plan in future
Antiproton production with a fixed target and search for superheavy particles at the LHC
No full textA proposal for an experiment to measure the cross section of antiproton
production in a proton-nuclear collision in a kinematically forbidden region
for nucleon-nucleon interaction on a fixed LHC target is considered. It is
shown that this process can be separated from the kinematically allowed
production process using the existing detectors of the ALICE facility at a
proton energy of 7 TeV with a fixed nuclear target. Assuming the scale
dependence of the cross section, the data obtained can be used to estimate the
subthreshold cross section for the production of superheavy particles with a
mass of several tens of TeV in the LHC lead nucleus beam.Comment: 7 pages, 4 figure
Methods of teaching university students in the field of labor using computer technology
No full textIn the article the model of
preparation of future is offered in industry of labour
protection with the use of computer technologies.
An author exposes the organizationalpedagogical
terms of application of computer
technologies and offers a model, built on the
basis of rich in content, didactics and
methodical components
Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb
No full textThe cross sections of forward emission of one, two and three neutrons by 158A GeV In-115 nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of In-115 in ultraperipheral collisions, as well as with the results of the abrasion ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV Pb-208 colliding with Al. (C) 2013 Elsevier B.V. All rights reserved
A fixed-target programme at the LHC for heavy-ion, hadron, spin and astroparticle physics: AFTER@LHC
No full textThanks to its multi-TeV LHC proton and lead beams, the LHC complex allows one to perform the most energetic fixed-target experiments ever and to study with high precision pp, pd and pA collisions at sNN=115GeV and Pbp and PbA collisions at sNN=72GeV. We present a selection of feasibility studies for the production of quarkonia, open heavy-flavor mesons as well as light-flavor hadrons in pA and PbA collisions using the LHCb and ALICE detectors in a fixed-target mode
Charmonia states suppression and transverse momentum distribution in Pb-Pb collisions at the CERN SPS
No full textWe present the results of experiment NA50 on the production of charmonia states in Pb-Pb collisions at 158 GeV/c per nucleon. For the most peripheral collisions the experimental data agree with ordinary nuclear absorption as deduced from proton and light nuclei induced collisions. For central collisions, we observe an anomalous suppression which significantly departs from normal nuclear absorption and which could result from Debye color screening in a deconfined quark-gluon phase. The dependence of the transverse momentum distributions on the centrality of the Pb-Pb collision is also investigated. (4 refs)
Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb
No full textThe cross sections of forward emission of one, two and three neutrons by 158A GeV 115In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, on the contrary to similar measurements performed earlier with 30A GeV 208Pb colliding with Al.The cross sections of forward emission of one, two and three neutrons by 158A GeV 115 In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE–LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115 In in ultraperipheral collisions, as well as with the results of the abrasion–ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In–Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV 208 Pb colliding with Al.The cross sections of forward emission of one, two and three neutrons by 158A GeV 115In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, on the contrary to similar measurements performed earlier with 30A GeV 208Pb colliding with Al
Suppression of charmonium production in PbPb collisions at 158 GeV/c per nucleon and quark-gluon deconfinement
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