Challenges to Modernization of Agricultural Food Production Using Improved Technologies

Agribusiness, Research and Development/Tech Change/Emerging Technologies,

Elastic Amplitudes and Observables in pp Scattering

Using a unified analytic representation for the elastic scattering amplitudes of pp scattering valid for all high energy region, the behavior of observables in the LHC collisions in the range $\sqrt{s}$ = 2.76 - 14 TeV is discussed. Similarly to the case of 7 TeV data, the proposed amplitudes give excellent description of the preliminary 8 TeV data. We discuss the expected energy dependence of the observable quantities, and present predictions for the experiments at 2.76, 13 and 14 TeV.Comment: 4 pages, 4 figures Contribution to Proceedings of DIFFRACTION 201

pp Elastic Scattering at LHC Energies

Using a unified analytic representation for the elastic scattering amplitudes of pp scattering valid for all energy region, the behavior of observables in the LHC collisions in the range $\sqrt{s}$= 2.76 - 14 TeV is discussed. Similarly to the case of 7 TeV data, the proposed amplitudes give excellent description of the preliminary 8 TeV data. We discuss the expected energy dependence of the observable quantities, and present predictions for the experiments at 2.76, 13 and 14 TeV.Comment: 16 pages, 17 figure

Facing the challenge of the urban frontier : creating effective Christian church congregations in the cities of the United States

https://place.asburyseminary.edu/ecommonsatsdissertations/1194/thumbnail.jp

Variations in selenium concentrations by photochemical and temperature-controlled iron cycles

Selenium (Se) concentrations in natural waters may vary over a 24-hour (diel) period in response to temperature changes. Diel cycles of Se have not been reported in coal mine drainage (CMD) waters, and understanding the mechanisms of Se concentration variations in CMD is important for predicting Se fate and mobility. Iron (Fe) is often associated with CMD, and diel cycles of dissolved Fe species concentrations and/or the formation of Fe oxyhydroxide minerals may impact Se mobility. Experiments were conducted in a laboratory setting between July 2014 and April 2015 to determine if selenite (SeIV) concentration changes could be detected in the same experiments with solid 2-line ferrihydrite (a synthesized Fe oxyhydroxide mineral) and dissolved Fe species concentration changes. Light and temperature controls were used to drive Fe species and SeIV concentration changes. Each experiment differed in solution type (Fe-only, Se-only, or Fe-Se combined), length, temperature, and light conditions. Samples were collected and analyzed for SeIV, total Se, FeII and total Fe. Se IV concentration changes were found to be directly correlated with temperature in both Se-only and Fe-Se solutions. The cycles were more pronounced in the presence of 2-line ferrihydrite. Temperature-dependent sorption of SeIV onto 2-line ferrihydrite was the likely cause of Se IV cycles. SeIV did not cycle with temperature in vessel solutions with pH values greater than 3, indicating that pH is a critical factor in SeIV cycling. The experiments were completed at pH values around 3, underwent significant temperature changes ranging from 2.2°C to 36.5°C, and contained solid Fe oxyhydroxide (2-line ferrihydrite). These conditions are known to exist in some CMD waters, suggesting that Se IV diel cycles may exist in these settings

Energy dependence of proton-proton elastic scattering at large momentum transfer

The measurements of proton-proton elastic scattering for large momentum transfer at energies in the range $\approx$ 20 to 60 GeV show a simple behaviour of form $d \sigma/dt \approx {\rm const}~|t|^{-8}$, apparently with no energy dependence. In the present work detailed analysis of the data shows a decrease of the magnitude of the tail with the energy, still with preservation of the power $|t|^{-8}$. The analysis allows the definition of a band for the energy dependence with the form of a power of the strong coupling $\alpha_S^{1.57}$. The rate of decrease describes very well the data at the distant energy $\sqrt{s}$ = 13 TeV, with reduction of the cross section by a factor 5.71. This result gives prediction for new experiments at high energies, and opens important question for theoretical investigation.Comment: 6 pages, 5 figures and 1 tabl

Effects of iron, manganese and zinc enriched coffee and tea wastes on lettuce – a field trial

Ensuring proper microelement supply under alkaline soil conditions could be a challenge even with the application of synthetic chelates. In this study, the application of coffee and tea wastes enriched with water soluble inorganic iron, manganese and zinc compounds was compared to water solution application of the same compounds at the same amount on a field with an alkaline Calcaric Arenosol. One butterhead and two iceberg lettuce cultivars were used as test plants. The effects of microelement enriched wastes on microelement availability in the soil, measured by DTPA-TEA method, was not clear-cut. However, the soil application of those microelement enriched wastes increased the nutritional value of lettuce by resulting in significantly higher concentration in cores for all the three investigated microelements. The highest rate of increase was observed for iron. As a consequence, lettuce heads accumulated significantly higher amount of iron, while this was not the case for manganese and zinc. There were comprehensive differences in the microelement concentration of the cores of the three investigated cultivars, with the butterhead type having especially high iron concentration. Head weights were not affected by the treatments. Hence, under the field conditions of this study, higher microelement concentration and uptake in the lettuce heads was not a prerequisite for good lettuce yield, as it was proved by the results of a zero control. However, the soil application of microelement enriched coffee and tea wastes for supplying microelements for lettuce in alkaline soil proved to be promising, especially for iron