نتایج جستجو برای: leaf cross section
تعداد نتایج: 694687 فیلتر نتایج به سال:
Experimental results on hadronic soft and hard diffractive processes are reviewed with emphasis on aspects of the data that point to the underlying QCD mechanism for diffraction. Diffractive differential cross sections are shown to be factorized into two terms, one representing the total cross section at the reduced energy, corresponding to the rapidity region(s) in which there is particle prod...
Soluble protein has been extracted from sections of wheat leaves, from base to tip, and the content of several key enzymes of photosynthetic carbon assimilation in each section has been determined by the protein blot method. In the first leaf, ribulose 1,5-bisphosphate carboxylase (RuBPC) (EC 4.1.1.39) in the basal 0 to 1 centimeter section is about 12% the level in the tip section, whereas pho...
The cross section of the D *-meson diffractive photoproduction at the HERA collider has been calculated in the framework of perturbatively motivated model for the different kine-matic regions. The camparison between the different Pomeron models has been performed.
Recent measurements of the top quark production cross section and decay properties by the CDF and D0 experiments are described. The cross section has been measured in dilepton, lepton plus jets, and all-hadronic final states, and a measurement of BR(t → Wb)/BR(t → Wq), where q is any quark, has been performed. The results, though statistics-limited, are consistent with each other and with theor...
Cross-sectioning is a popular method for visualizing the complicated inner structures of three-dimensional volume datasets. However, the process is usually manual, meaning that a user must manually specify the cross-section’s location using a repeated trial-and-error process. To find the best cross-sections, this method requires that a user is knowledgeable and experienced. This paper proposes ...
The astrophysical S-factor for the reaction Be(p,γ)B up to an energy of 2 MeV (c.m.) and the capture cross section of Li(n,γ)Li up to 1 MeV (c.m.) are calculated using the Direct Capture model (DC). Both calculations are in good agreement with experimental data.
In multiscale and topcolor–assisted models of walking technicolor, light, spin–one technihadrons can exist with masses of a few hundred GeV; they are expected to decay as ρ T → W π T. For M ρ T ≃ 200 GeV and M π T ≃ 100 GeV, the process p¯ p → ρ T → W π T has a cross section of about a picobarn at the Tevatron. We demonstrate the detectability of this process with simulations appropriate to Run...
Searches for standard model Higgs boson production in p¯ p collisions at √ s = 1.96 TeV have been carried out for Higgs boson masses (mH) in the range 105 < mH < 200 GeV/c 2. Analyses are conducted with integrated luminosities from 1.0 fb −1 to 2.3 fb −1. As no significant excess is observed, we proceed to set limits on standard model Higgs boson production. The observed 95% confidence level up...
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