Can the "standard" unitarized Regge models describe the TOTEM data?

The standard Regge poles are considered as inputs for two unitarization methods: eikonal and U-matrix. It is shown that only models with three input pomerons and two input odderons can describe the high energy data on $pp$ and $\bar pp$ elastic scattering including the new data from Tevatron and LHC. However, it seems that the both considered models (eikonal and U-matrix) require a further modification (e.g., to explore nonlinear reggeon trajectories and/or nonexponential vertex functions) for a more satisfactory description of the data at 19.0 GeV$\leq \sqrt{s}\leq$ 7 TeV and 0.01 $\leq |t|\leq$14.2 GeV$^{2}$.Comment: 11 pages, 7 figures, typos are corrected, minor corrections in the text, No changes in results and conclusion. To appear in EP

Integral and derivative dispersion relations in the analysis of the data on pppp and pˉp\bar pp forward scattering

Integral and derivative dispersion relations (DR) are considered for the $pp$ and $\bar pp$ forward scattering amplitudes. A new representation for the derivative DR, valid at lower energies than the standard one, is obtained. The data on the total cross sections of $pp (\bar pp)$ interaction as well as those on the ratio of the real part to the imaginary part of the forward amplitude are analyzed within various forms of the DR and high-energy Regge models. It is shown that three models for the pomeron, simple pole with intercept larger than one, triple pole pomeron and double pole pomeron (both with intercept equal to one) lead to practically equivalent descriptions of the data at $\sqrt{s}>5$ GeV. It is also shown that the low-energy part of the dispersion integral (from the two-proton threshold up to $\sqrt{s}=5$ GeV) allows one to reproduce well the data on $\rho$ at lower energies without additional free parametersComment: 9 pages (LaTeX) including 4 figures. To be published in Proceedings of the International Conference "New trends in high-energy physics" in Alushta, Ukraine, May 24-31, 200

Integral and derivative dispersion relations, analysis of the forward scattering data

Integral and derivative dispersion relations (DR) are considered for the forward scattering $pp$ and $\bar pp$ amplitudes. A new representation for the derivative DR, valid not only at high energy, is obtained. The data on the total cross sections for $pp (\bar pp)$ interaction as well as the data on the parameter $\rho$ are analyzed within the various forms of the DR and high-energy Regge models. It is shown that three models for the Pomeron, Simple pole Pomeron, Tripole Pomeron and Dipole Pomeron (the both with the intercept equal unit) lead to practically equivalent description of the data at $\sqrt{s}>$5 GeV. It is also shown that the correctly calculated low-energy part of the dispersion integral (from the two-proton threshold up to $\sqrt{s}=$5 GeV) allows to reproduce well the $\rho$ data at low energies without additional free parameters.Comment: LaTeX, 3 pages, 2 eps figures, talk presented by E. Martynov at the International Europhysics Conference on High Energy Physics (HEP 2003), 17-23 July 2003, Aachen, German

Impact analysis of TOTEM data at the LHC: black disk limit exceeded

We discuss the profile of the impact--parameter dependent elastic scattering amplitude. Extraction of impact-parameter dependence from the dataset with inclusion of the experimental data on elastic scattering at the LHC energies helps to reveal the asymptotics of hadron interactions. Analysis of the data clearly indicates that the impact-parameter elastic scattering amplitude exceed the black disk limit at the LHC energy 7TeV and the inelastic overlap function reaches its maximum value at $b>0$Comment: 5 pages, 5 figure

The soft and the hard pomerons: elastic scattering and unitarisation

The hard pomeron component needed to reproduce small-x data seems to be present in elastic scattering at moderate energy. If this is the case, it is likely that the total cross section at the LHC will be appreciably larger than previously expected.Comment: Talk given at 12th International Conference on Elastic and Diffractive Scattering: Forward Physics and QCD, Hamburg, DESY, Germany, 21-25 May 200

Hard pomeron contribution to forward elastic scattering

The introduction of a hard singularity in fits to total cross sections and to the ratio of real to imaginary parts enables to reproduce perfectly the data for sqrt(s)< 100 GeV using only simple-pole parametrisations, both for the soft and for the hard pomerons.Comment: Contribution to the proceedings of the XIth International Conference on Elastic and Diffractive Scattering, Chateau de Blois, France, May 15 - 20, 2005. Needs Blois.sty (provided

Potentiation of the antimicrobial effect of Lactobacillus reuteri DSM 17938 cell-free extracts by ascorbic acid.

The purpose of this study was to evaluate the effect of supplementing the culture medium with ascorbic acid on the antimicrobial properties of Lactobacillus reuteri cell-free extracts (CFEs). CFEs were prepared using commercial strain L. reuteri DSM 17938 by culturing lactobacilli in its own disintegrated cell suspension (DCS) supplemented with ascorbic acid in sub-inhibitory (5 mg/ml, CFE5) or minimal inhibitory concentration (20 mg/ml, CFE20) and without supplementation (CFE0). Staphylococcus aureus AТСС 25923, Escherichia coli AТСС 25922 reference strains and Pseudomonas aeruginosa extensively drug resistant (XDR) clinical isolate were used as indicator cultures. Screening of the inhibitory properties of the studied CFEs and elucidation of the nature of inhibitory products were done using modified Micro scale Optical Density Assay (MODA). The inhibition indices (InhI) were calculated for the studied CFEs and ascorbic acid of appropriate concentrations. CFEs were subjected to HPLC-analysis. CFE5 and CFE20 showed significantly higher antimicrobial activity toward to indicator cultures than CFE0. InhI calculated for extracts CFE5 and CFE20 mainly exceeded the sum of the corresponding indicators calculated for CFE0 and ascorbic acid (АА) of appropriate concentrations: InhICFE5 ≥ InhI CFE0 + InhI AA5; InhICFE20 &gt; InhI CFE0 + InhI AA20. Acidic metabolic products have made the greatest contribution to the antimicrobial effect of the studied CFEs. HPLC-nalysis showed that the modified ascorbic acid was the substance found in CFE20 in the greatest quantity. The revealed effect of potentiation of antimicrobial activity of CFEs by ascorbic acid should be taken into account when developing new biotechnological products based on derivatives of L. reuteri DSM 17938

Parasites of beetles which are pests of grain and products of its processing

Вредители зерновых наносят значительный экономический ущерб во многих развивающихся странах, в том числе в Украине, где ежегодные потери урожая зерновых составляют в среднем 6 млн тонн стоимостью 840 млн долл. Вредители потребляют зерно в пищу, загрязняют его и создают благоприятные условия для развития плесневых грибов, что значительно снижает пищевые и посевные качества зерна и продуктов его переработки. В статье приведены основные сведения о биологическом контроле и его преимуществах, продемонстрировано разнообразие естественных врагов жесткокрылых-вредителей, применяемых в биологическом контроле, проанализированы исследования биологического контроля основных вредителей зерна и продуктов его переработки из семейств Curculionidae и Tenebrionidae, а также роль конкуренции в биологическом контроле. Обзор исследований эффективности различных естественных врагов основных жесткокрылых – вредителей зерновых показал, что наиболее изучены паразиты Sitophilus granarius, S.&nbsp;zeamais, Tribolium confusum, T. castaneum, Oryzaephilus surinamensis, Rhyzopertha dominica, Acanthoscelides obtectus и Callosobruchus maculatus. Естественные враги остальных видов мало исследованы, а для Caulophilus latinasus, Tenebroides mauritanicus, Dermestes lardarius, Ptinus fur и Bruchidius incarnatus данные отсутствуют. Наиболее широко применяются такие естественные враги, как Xylocoris flavipes, Anisopteromalus calandrae, энтомопатогенные грибы Metarhizium anisopliae и Beauveria bassiana, а также нематоды из родов Steinernema и Heterorhabditis. Несмотря на широкий спектр естественных врагов основных вредителей запасов, необходимы дальнейшие исследования паразитов каждого вида жесткокрылых, несущих экономический ущерб. Применение биологического контроля является наиболее перспективным методом борьбы с вредителями зерна и продуктов его переработки, отвечающим современным требованиям к санитарно-экологическому состоянию сельскохозяйственной продукции.Вредители зерновых наносят значительный экономический ущерб во многих развивающихся странах, в том числе в Украине, где ежегодные потери урожая зерновых составляют в среднем 6 млн тонн стоимостью 840 млн долл. Вредители потребляют зерно в пищу, загрязняют его и создают благоприятные условия для развития плесневых грибов, что значительно снижает пищевые и посевные качества зерна и продуктов его переработки. В статье приведены основные сведения о биологическом контроле и его преимуществах, продемонстрировано разнообразие естественных врагов жесткокрылых-вредителей, применяемых в биологическом контроле, проанализированы исследования биологического контроля основных вредителей зерна и продуктов его переработки из семейств Curculionidae и Tenebrionidae, а также роль конкуренции в биологическом контроле. Обзор исследований эффективности различных естественных врагов основных жесткокрылых – вредителей зерновых показал, что наиболее изучены паразиты Sitophilus granarius, S.&nbsp;zeamais, Tribolium confusum, T. castaneum, Oryzaephilus surinamensis, Rhyzopertha dominica, Acanthoscelides obtectus и Callosobruchus maculatus. Естественные враги остальных видов мало исследованы, а для Caulophilus latinasus, Tenebroides mauritanicus, Dermestes lardarius, Ptinus fur и Bruchidius incarnatus данные отсутствуют. Наиболее широко применяются такие естественные враги, как Xylocoris flavipes, Anisopteromalus calandrae, энтомопатогенные грибы Metarhizium anisopliae и Beauveria bassiana, а также нематоды из родов Steinernema и Heterorhabditis. Несмотря на широкий спектр естественных врагов основных вредителей запасов, необходимы дальнейшие исследования паразитов каждого вида жесткокрылых, несущих экономический ущерб. Применение биологического контроля является наиболее перспективным методом борьбы с вредителями зерна и продуктов его переработки, отвечающим современным требованиям к санитарно-экологическому состоянию сельскохозяйственной продукции.Crop pests are the cause of economic damage in many developing countries, including Ukraine, where annual loss of crop harvest on average equals 6 million tons, valued at 840 million dollars. Pests consume grain, causing its pollution and creating favorable conditions for development of mold, which significantly decreases the food and seeding properties of grain and products of its processing. This article presents basic data on biological control and its advantages, demonstrates the variety of natural enemies of the pest beetles, which are used in biological control, analyses studies of the biological control of main crop pests and products of its processing belonging to the families Curculionidae and Tenebrionidae, and also the role of competition in&nbsp; biological control. The analysis of studies on the effectiveness of different natural enemies of the main crop pest-beetles shows that the most studied parasites are Sitophilus granarius, S. zeamais, Tribolium confusum, T. castaneum, Oryzaephilus surinamensis, Rhyzopertha dominica, Acanthoscelides obtectus and Callosobruchus maculatus. Natural enemies of the rest of the species are poorly studied, and there is no data on Caulophilus latinasus, Tenebroides mauritanicus, Dermestes lardarius, Ptinus fur and Bruchidius incarnatus. The most commonly used natural enemies are Xylocoris flavipes, Anisopteromalus calandrae, the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana, and also nematodes of the Steinernema and Heterorhabditis genera. Despite the broad spectrum of natural enemies of the main pests of the grain supply, it is necessary to further study the parasites of every species of beetle which causes economic damage. Using biological control is the most promising method against pests of crops and products of its processing, which meets the current requirements to the sanitary-ecological condition of agricultural production