614 research outputs found
Some Current Trends of Tanning in Kansas: Using Google Maps and Behavioral Economics to Explore Travel Based Interventions
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
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
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
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
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Characterisation of Methicillin-Resistant Staphylococcus aureus from Alexandria, Egypt
The present study aims to characterise clinical MRSA isolates from a tertiary care centre in Egypt’s second-largest city, Alexandria. Thirty isolates collected in 2020 were genotypically characterised by microarray to detect their resistance and virulence genes and assign them to clonal complexes (CC) and strains. Isolates belonged to 11 different CCs and 14 different strains. CC15-MRSA-[V+fus] (n = 6), CC1-MRSA-[V+fus+tir+ccrA/B-1] (PVL+) (n = 5) as well as CC1-MRSA-[V+fus+tir+ccrA/B-1] and CC1153-MRSA-[V+fus] (PVL+) (both with n = 3) were the most common strains. Most isolates (83%) harboured variant or composite SCCmec V or VI elements that included the fusidic acid resistance gene fusC. The SCCmec [V+fus+tir+ccrA/B-1] element of one of the CC1 isolates was sequenced, revealing a presence not only of fusC but also of blaZ, aacA-aphD and other resistance genes. PVL genes were also common (40%). The hospital-acquired MRSA CC239-III strain was only found twice. A comparison to data from a study on strains collected in 2015 (Montelongo et al., 2022) showed an increase in fusC and PVL carriage and a decreasing prevalence of the CC239 strain. These observations indicate a diffusion of community-acquired strains into hospital settings. The beta-lactam use in hospitals and the widespread fusidic acid consumption in the community might pose a selective pressure that favours MRSA strains with composite SCCmec elements comprising mecA and fusC. This is an unsettling trend, but more MRSA typing data from Egypt are required
Mega three-photon absorption cross-section enhancement in pseudoisocyanine J-aggregates
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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