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6.717 Aktuelle Fachpublikationen zum Thema temperature

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Isocratic and gradient elution in micellar liquid chromatography with Brij‐35

10.04.2015 | Ester Peris‐García, Casandra Ortiz‐Bolsico, Juan José Baeza‐Baeza, María Celia García‐Alvarez‐Coque, Journal of Separation Science, 2015

Polyoxyethylene(23)lauryl ether (known as Brij‐35) is a non‐ionic surfactant, which has been considered as an alternative to the extensively used in micellar liquid chromatography anionic surfactant sodium lauryl (dodecyl) sulfate, for the analysis of drugs and other types of compounds. Brij‐35 ...


Spatial versus Day-To-Day Within-Lake Variability in Tropical Floodplain Lake CH 4 Emissions – Developing Optimized Approaches to Representative Flux Measurements

10.04.2015 | Roberta B. Peixoto et al., PLoS ONE, 2015

by Roberta B. Peixoto, Fausto Machado-Silva, Humberto Marotta, Alex Enrich-Prast, David Bastviken Inland waters (lakes, rivers and reservoirs) are now understood to contribute large amounts of methane (CH4) to the atmosphere. However, fluxes are poorly constrained and there is a need for ...


[Report] Eddy-driven subduction exports particulate organic carbon from the spring bloom

10.04.2015 | Melissa M. Omand; Eric A. D’Asaro; Craig M. Lee; Mary Jane Perry; Nathan Briggs; Ivona Cetinić; Amala Mahadevan, Science , 2015

The export of particulate organic carbon (POC) from the surface ocean to depth is traditionally ascribed to sinking. Here, we show that a dynamic eddying flow field subducts surface water with high concentrations of nonsinking POC. Autonomous observations made by gliders during the North Atlantic ...


[Report] Molecular nitrogen in comet 67P/Churyumov-Gerasimenko indicates a low formation temperature

10.04.2015 | M. Rubin; K. Altwegg; H. Balsiger; A. Bar-Nun; J.-J. Berthelier; A. Bieler; P. Bochsler; C. Briois; U. Calmonte; M. ..., Science , 2015

Molecular nitrogen (N2) is thought to have been the most abundant form of nitrogen in the protosolar nebula. It is the main N-bearing molecule in the atmospheres of Pluto and Triton and probably the main nitrogen reservoir from which the giant planets formed. Yet in comets, often considered the ...


Statistical Optimization for Production of Light Olefins in a Fluidized‐Bed Reactor

09.04.2015 | Hassan Sharifi Pajaie, Majid Taghizadeh, Chemical Engineering & Technology, 2015

Abstract The methanol‐to‐olefins reaction (MTO) was studied in a small‐scale fluidized‐bed reactor over synthesized silicoaluminophosphate (SAPO‐34) catalysts. Mesoporous nanocrystalline SAPO‐34 molecular sieves were synthesized hydrothermally by ultrasonic and microwave‐assisted aging ...


Measurements of the HO2 Uptake Coefficients onto Single Component Organic Aerosols

09.04.2015 | P. S. J. Lakey; I. J. George; L. K. Whalley; M. T. Baeza-Romero; D. E. Heard, Environmental Science & Technology, 2015

Measurements of HO2 uptake coefficients (γ) were made onto a variety of organic aerosols derived from glutaric acid, glyoxal, malonic acid, stearic acid, oleic acid, squalene, monoethanol amine sulfate, monomethyl amine sulfate, and two sources of humic acid, for an initial HO2 concentration of 1 ...


Generation of Crystalline Microcontainers of Salicylic Acid

08.04.2015 | Julia Seidel, Joachim Ulrich, Chemical Engineering & Technology, 2015

Abstract The formation of liquid inclusions is frequently observed to be disrupting in crystallization processes. But such crystals containing liquid inclusions might offer the possibility to be used as container systems by encapsulating other substances inside the inclusions. Experimental ...


Crystallization of Terutroban Sodium Salt Hydrate from the Deliquescent State

08.04.2015 | Nicolas Couvrat, Yohann Cartigny, Julie Linol, Lucile Vaysse‐Ludot, Pascal Langlois, Gérard Coquerel, Chemical Engineering & Technology, 2015

Abstract Terutroban sodium salt (Teru‐Na) is a solid active pharmaceutical ingredient initially produced in its anhydrous form. The crystallization of a new dihydrate was established using liquid‐assisted grinding and the liquid‐liquid interface process. The stability of the Teru‐Na ...


Energies, Vol. 8, Pages 2701-2713: Melting Behavior and Thermolysis of NaBH4−Mg(BH4)2 and NaBH4−Ca(BH4)2 Composites

08.04.2015 | Ley, Morten B.; Roedern, Elsa ; Thygesen, Peter M. M.; Jensen, Torben R., Energies, 2015

The physical properties and the hydrogen release of NaBH4–Mg(BH4)2 and NaBH4−Ca(BH4)2 composites are investigated using in situ synchrotron radiation powder X-ray diffraction, thermal analysis and temperature programmed photographic analysis. The composite, xNaBH4–(1 − x)Mg(BH4)2, x = 0.4 to ...


Microbial Ecology of Watery Kimchi

07.04.2015 | Kyu Hang Kyung, Eduardo Medina Pradas, Song Gun Kim, Yong Jae Lee, Kyong Ho Kim, Jin Joo Choi, Joo Hyong Cho, Chang ..., Journal of Food Science, 2015

Abstract The biochemistry and microbial ecology of 2 similar types of watery (mul) kimchi, containing sliced and unsliced radish and vegetables (nabak and dongchimi, respectively), were investigated. Samples from kimchi were fermented at 4, 10, and 20 °C were analyzed by plating on ...


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