614 research outputs found

    Some Current Trends of Tanning in Kansas: Using Google Maps and Behavioral Economics to Explore Travel Based Interventions

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    This presentation was given as part of the GIS Day@KU symposium on November 18, 2015. For more information about GIS Day@KU activities, please see http://www.gis.ku.edu/gisday/2015/.Platinum Sponsors: KU Department of Geography and Atmospheric Science; KU School of Business. Gold Sponsors: Bartlett & West; Kansas Biological Survey; KU Environmental Studies Program; KU Institute for Policy & Social Research; KU Libraries. Silver Sponsors: State of Kansas Data Access and Support Center (DASC). Bronze Sponsors: KU Center for Remote Sensing of Ice Sheets (CReSIS); TREKK Design Group, LLC; Wilson & Company, Engineers and Architects

    Effect of different saline Levels and Irrigation Regimes on agronomic parameters of potatoes crop under the semi-arid environment of Tunisia

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    In Tunisia, the scarcity of water for irrigation allows the use of low water quality. Deficit irrigation has shown successful results with a large number of crops in various countries. Field experiments, were carried out in Central TunIsia (10.5632°W; 35.9191°N; 19 m a.s.l) on a potatoes crop planted in a sandy loam soil, during the growing season 2015, from January 21 (plantation of tubers) to May 21 (harvesting). Objective of the work, was to assess four different irrigation management on the agronomic parameters of potatoes crop and Water use efficient. The experimental field were laid out in a randomized complete block design consisting of two different irrigation levels and two water qualities. Each plot received the same plant management and was irrigated by a subsurface drip irrigation system (SDI). The first plot irrigated with water characterized by electrical conductivity of 1.0 dS/ m T1 with 100% ET0, T2 with 50% ET0, the second plot was irrigated with water with a water of 4dS/m and was compound by T3 with 100% ET0 and T4 with 50% ET0. This study was aimed to investigate on the effect of salt stress or water stress and the combination salt water stress on some agronomics parameters of potatoes. Statistical analysis evidenced that the degree of salinity has a highly significant positive effect on the plant’s growth, leaf area, tuber yield and volume efficiency, and water use efficiency

    Preparation and Spectral Study of New Complexes of Some Metal Ions with 3,5-Dimethyl-1H-Pyrazol-1-yl Phenyl Methanone

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    Many complexes of 3,5-dimethyl-1H-pyrazol-1-yl phenyl methanone with Cr(III), Co(II), Ni(II), Cu(II) and Cd(II) were synthesized and characterized by FT-IR, UV/visible spectra, elemental analysis, room temperature magnetic susceptibility and molar conductivity. Cd(II) complex was expected to have tetrahedral structure while all the other complexes were expected to have an octahedral structure

    Study of Foaming Properties and Effect of the Isomeric Distribution of Some Anionic Surfactants

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    Using different reaction conditions of photosulfochlorination of n-dodecane, two samples of anionic surfactants of sulfonate type are obtained. Their micellar behavior has been already reported and the relationship between their isomeric distribution and their chemical structures and micellar behaviors have been more thoroughly explored. In this investigation, we screened the foaming properties (foaming power and foam stability) by a standardized method very similar to the Ross–Miles foaming tests to identify which surfactants are suitable for applications requiring high foaming, or, alternatively, low foaming. The results obtained for the synthesized surfactants are compared to those obtained for an industrial sample of secondary alkanesulfonate (Hostapur 60) and to those of a commercial sample of sodium dodecylsulfate used as reference for anionic surfactants. The foam formation and foam stability of aqueous solutions of the two samples of dodecanesulfonate are compared as a function of their isomeric distribution. These compounds show good foaming power characterized in most cases by metastable or dry foams. The highest foaming power is obtained for the sample rich in primary isomers which also produces foam with a relatively high stability. For the sample rich in secondary isomers we observe under fixed conditions a comparable initial foam height but the foam stability turns out to be low. This property is interesting for applications requiring low foaming properties such as dishwashing liquid for machines. The best results are observed near and above the critical micellar concentrations and at 25 C for both the samples

    Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates

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    Herein we report an extraordinary three-photon absorption cross-section (sigma(3)(\u27)) enhancement in J-aggregates supramolecular systems. The much higher value of sigma(3)(\u27) in PIC J-aggregate (2.5x10(-71) cm(6) s(2) ph(-2)) compared to typical values obtained in organic molecules (10(-80) cm(6) s(2) ph(-2)) is attributed to the strong molecular transition dipole moment coupling in the supramolecular assembly. Three-photon absorption of PIC J-aggregates and monomer aqueous solutions were measured using the well known open aperture Z-scan technique pumping with a 25 ps pulse laser-OPG system at 1720 nm. This novel result opens new expectations for applications of supramolecular systems in bioimaging and medicine
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