An Empirical Investigation of the Acceptance of Electronic Negotiation Support System Features

Electronic negotiation support aims at enabling complex trade interactions through means of information technology. Present research in electronic negotiation support is limited to a large extent to the analytical decision support view. There is a lack of empirical evidence on the acceptance of the different types of support in the negotiation support portfolio and their value contribution. In this paper, the results of a laboratory experiment evaluating the communication support feature of a particular negotiation support system, namely the Negoisst system, is presented. It is concluded, that dedicated communication support is highly relevant in users’ perception of usefulness

Benzenepentamine – Its Easy Accessibility and Use in Syntheses of Pyrazinoquinoxalines

Benzenepentamine (6) has been rediscovered after about 60 years. A simple and very efficient synthetic route is described which yields the very sensitive, colourless 6 in methanolic solution in nearly quantitative yield. Condensations of 6 with two masked forms A and B of glyoxal conveniently lead to two types of amino‐substituted pyrazinoquinoxalines, one with an angular phenanthrene‐type topology (7a), or one with the linear anthracene‐type structure (8a), respectively, with acceptable yields. The α‐diketone benzil also reacts with 6, but less selectively, forming the corresponding tetraphenyl derivatives 7b an 8b of both these heterotricyclic ring systems. The heretofore unknown nitrobenzenepentamine (9), formed in addition to benzenehexamine in reduction reactions of 1,3,5‐trinitrobenzenetriamine, has also been obtained. Based on spectroscopic data, the structures of these two multiamines have been deduced from their condensation products with α‐diketones, in the case of the new pentamine 9 from its first derivatives 7c–e of pyrazino[2,3‐f]quinoxaline. Copyright © 1989 WILEY‐VCH Verlag GmbH & Co. KGaA, WeinheimSCOPUS: ar.jinfo:eu-repo/semantics/publishe

Developmental exposure to silver nanoparticles at environmentally relevant concentrations alters swimming behavior in zebrafish ( Danio rerio

Silver nanoparticles (Ag-NPs) are ubiquitous in household and medical products because of their antimicrobial activity. A consequence of the high volume of Ag-NP production and usage is increased amounts of Ag-NPs released into the environment. Their small size (1-100 nm) results in unique physiochemical properties that may increase toxicity relative to their bulk counterpart. Therefore, the goal of the present study was to assess the potential toxicity of environmentally relevant concentrations of Ag-NPs in zebrafish (Danio rerio). Wild-type tropical 5D zebrafish embryos were exposed to Ag-NPs from 4 to 120 h postfertilization at 0.03, 0.1, 0.3, 1, and 3 ppm (mg/L). Inductively coupled plasma-mass spectrometry confirmed concentration-dependent uptake of Ag into zebrafish as well as bioaccumulation over time. A morphological assessment revealed no significant hatching impairment, morphological abnormalities, or mortality at any concentration or time point examined. However, assessment of photomotor behavior at 3 d postfertilization (dpf) revealed significant hyperactivity in the 0.3, 1, and 3 ppm Ag-NP treatment groups. At 4 dpf, significant hyperactivity was observed only in the 3 ppm treatment group, whereas 5 dpf larvae exposed to Ag-NPs displayed no significant abnormalities in photomotor behavior. These findings suggest that nonteratogenic concentrations of Ag-NPs are capable of causing transient behavioral changes during development. Environ Toxicol Chem 2018;37:3018-3024. © 2018 SETAC

Measurement of the Mass of the Z-Boson and the Energy Calibration of Lep

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