118,844 research outputs found
Kempner Family Papers and Business Records (MS 86-0008)
No full textLetter from Malcolm A. Steed to Harris L. Kempner, Jr. remitting a cancelled note of H. Kempner Cotton Company
Nanoporous crystals, co-crystals, isomers and polymorphs from crystals
No full textFilling the need for a volume on the organic side of nanotechnology, this comprehensive overview covers all major nanostructured materials in one handy volume. Alongside metal organic frameworks, this monograph also treats other modern aspects, such as rotaxanes, catenanes, nanoporosity and catalysis. Detailed attention is paid to the chemistry, physics and materials science throughout, making this a definite must for all chemists
Carbohydrate-supramolecular gels: Adsorbents for chromium(VI) removal from wastewater
No full textHypothesis: To overcome the contamination of water by heavy metals the adsorption of the pollutant on
gel phases is an attractive solution since gels are inexpensive, potentially highly efficient and form a distinct
phase while allowing diffusion of the contaminated water throughout the material. This work tests
the chromium(VI) adsorbent capacity of new supramolecular gels for Chromium(VI) removal from
wastewater.
Experiments: First hydrophobic imidazolium salts of carbohydrate anions were synthesised as new gelators.
Subsequently, they were dissolved in a solvent by heating and, after cooling overnight, to give the
formation of supramolecular gels. The properties of the resulting gels, such as thermal stability, mechanical
strength, morphology, rheology, and kinetics of gel formation, were studied as a function of gelator
structure, gelation solvent and pollutant removal efficiency.
Findings: Carbohydrate-derived gels showed the best removal capacity, i.e. 97% in 24 h. Interestingly, in
one case, the reduction of chromium(VI) to chromium(III) also occurred after the adsorption process, and
this phenomenon has been analysed using 1H NMR spectroscopy, IR spectroscopy, and SEM. The most
efficient gel can reach an adsorption capacity of 598 mg/g in contrast to a value of 153 mg/g for the most
effectively best hydrogels reported to date. The new gel can be also recycled up to 4 times. These findings
suggest that these new, supramolecular hydrogels have potential applications in environmental
remediation
Biology and Management of Pusley (Richardia L.) in Tomato, Pepper, Cucurbit, and Strawberry Production
No full textFour species of pusley (Richardia L.) are widespread and common weeds in Florida vegetable and strawberry production. We refer to the native plant Richardia scabra L. as Florida pusley. This discrimination is necessary because these species are often referred to collectively as Florida pusley due to overlapping distributions, similar growth habits and leaf morphologies, and difficulty identifying without the presence of fruit. This new 6-page publication of the UF/IFAS Horticultural Sciences Department describes the different pusley species and provides management options for strawberry, pepper, cucurbits, and tomato. Written by Shaun M. Sharpe, Nathan S. Boyd, Chris Marble, and Shawn Steed.
https://edis.ifas.ufl.edu/hs133
Biology and Management of Ragweed Parthenium (Parthenium hysterophorous L.) in Ornamental Crop Production
No full textThis 6-page fact sheet provides an overview of Ragweed Parthenium, Parthenium hysterophorous L, including a species description and information on how to manage ragweed parthenium culturally, physically, and chemically. Written by Debalina Saha, Chris Marble, Robert H. Stamps, Shawn Steed, and Nathan S. Boyd, and published by the Environmental Horticulture Department, July 2016.
ENH1270/EP531: Biology and Management of Ragweed Parthenium (Parthenium hysterophorous L.) in Ornamental Crop Production (ufl.edu
Biology and Management of Ragweed Parthenium (Parthenium hysterophorous L.) in Ornamental Crop Production
No full textThis 6-page fact sheet provides an overview of Ragweed Parthenium, Parthenium hysterophorous L, including a species description and information on how to manage ragweed parthenium culturally, physically, and chemically. Written by Debalina Saha, Chris Marble, Robert H. Stamps, Shawn Steed, and Nathan S. Boyd, and published by the Environmental Horticulture Department, July 2016.
ENH1270/EP531: Biology and Management of Ragweed Parthenium (Parthenium hysterophorous L.) in Ornamental Crop Production (ufl.edu
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