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4.953 Aktuelle Fachpublikationen zum Thema temperature

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Binary phase diagrams for chromonic materials in water via fluorescence spectroscopy: cromolyn and water

19.11.2014 | Gerald Raymond Van Hecke; Kerry K Karukstis; Scott Rayermann, Physical Chemistry Chemical Physics, 2014

We report here the first example of a new and novel method of determining the binary temperature – composition phase diagram of a chromonic material in water using its intrinsic fluorescence. Disodium cromoglycate, or cromolyn, is an anti-allergy medicine representative of a class of compounds ...

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Coordination polymers of uranium (IV) terephthalates

18.11.2014 | Clément Falaise; ayalew assen; ionut mihalcea; Christophe Volkringer; adel mesbah; Nicolas Dacheux; Thierry Loiseau, Dalton Transactions, 2014

A series of tetravalent uranium terephthalates has been solvothermally synthesized in N,N-dimethylformamide solvent (DMF) at temperature 100-150°C with different water amounts. Composition diagrams have been determined for U4+ metallic cation in the presence of terephthalic acid, and their ...

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Effects of UV radiation on aquatic ecosystems and interactions with other environmental factors

18.11.2014 | Donat-P. Häder; Craig E. Williamson; Sten-Åke Wängberg; Milla Rautio; Kevin C. Rose; Kunshan Gao; E. Walter Helbling ..., Photochemical & Photobiological Sciences, 2014

Interactions between climate change and UV radiation are having strong effects on aquatic ecosystems due to feedback between temperature, UV radiation, and greenhouse gas concentration. Higher air temperatures and incoming solar radiation are increasing the surface water temperatures of lakes and ...

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A comprehensive search of topologically distinct local minimum structures of protonated water octamer and the classification of OH topological types

16.11.2014 | Author(s): Dai Akase , Hiroyuki Teramae , Misako Aida, Chemical Physics Letters, 2014

Publication date: 2 January 2015 Source:Chemical Physics Letters, Volume 618 Author(s): Dai Akase , Hiroyuki Teramae , Misako Aida The rooted digraph is used to topologically distinguish the isomers of protonated water (PW) cluster. We generated many PW octamer geometries and obtained ...

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Light-induced, site-selective isomerization of glyoxylic acid in solid xenon

16.11.2014 | Author(s): Adriana Olbert-Majkut , Maria Wierzejewska , Jan Lundell, Chemical Physics Letters, 2014

Publication date: 25 November 2014 Source:Chemical Physics Letters, Volumes 616–617 Author(s): Adriana Olbert-Majkut , Maria Wierzejewska , Jan Lundell The isomerization of glyoxylic acid (GA) and its water complex was studied in a low temperature xenon matrix. The aim of these studies ...

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Pairwise association of neopentane as a function of hydrostatic pressure

16.11.2014 | Author(s): Giuseppe Graziano, Chemical Physics Letters, 2014

Publication date: 25 November 2014 Source:Chemical Physics Letters, Volumes 616–617 Author(s): Giuseppe Graziano It is shown that the contact-minimum configuration of two neopentane molecules is favoured on increasing hydrostatic pressure over the range 1–4000atm, at room temperature, in ...

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Processes and time-scales of energy loss of low-energy electrons (<5eV) in liquid water

16.11.2014 | Author(s): Gordon L. Hug , Asokendu Mozumder, Chemical Physics Letters, 2014

Publication date: 25 November 2014 Source:Chemical Physics Letters, Volumes 616–617 Author(s): Gordon L. Hug , Asokendu Mozumder The various processes responsible for the energy degradation and eventual thermalization of low-energy subexcitation electrons (<5eV) in liquid water are ...

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Microwave assisted glycolysis of poly(ethylene terephthalate) catalyzed by 1‐butyl‐3‐methylimidazolium bromide ionic liquid

14.11.2014 | Mohamed A. Alnaqbi, Mahmoud A. Mohsin, Reneesh M. Busheer, Yousef Haik, Journal of Applied Polymer Science, 2014

ABSTRACT The combination of ionic liquid (IL) associated with microwave energy may have some potential application in the chemical recycling of poly (ethylene terephthalate). In this processes, glycolysis of waste poly (ethylene terephthalate) recovered from bottled water containers were ...

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Synthesis of Low-Valent Nickel Complexes in Aqueous Media, Mechanistic Insights, and Selected Applications

14.11.2014 | Illán Morales-Becerril; Marcos Flores-Álamo; Adrián Tlahuext-Aca; Alma Arévalo; Juventino J. García, Organometallics, 2014

The synthesis of nickel(0) complexes usually requires the employment of strong reducing agents, including powerful hydride donors such as LiHBEt3, LiAlH4, and DIBAL-H. Herein, we have reduced the Ni(II) complex [(dippe)NiCl2] (1a) at room temperature by using KOH in aqueous media to yield the ...

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Short-Term Coral Bleaching Is Not Recorded by Skeletal Boron Isotopes

14.11.2014 | Verena Schoepf et al., PLoS ONE, 2014

by Verena Schoepf, Malcolm T. McCulloch, Mark E. Warner, Stephen J. Levas, Yohei Matsui, Matthew D. Aschaffenburg, Andréa G. Grottoli Coral skeletal boron isotopes have been established as a proxy for seawater pH, yet it remains unclear if and how this proxy is affected by seawater temperature. ...

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