Distributed sensing units deploying on group unmanned vehicles

This study aims to use two unmanned vehicles (aerial vehicles and ground vehicles) to implement multi-machine cooperation to complete the assigned tasks quickly. Unmanned aerial/ground vehicles can call each other to send instant inquiry messages using the proposed cooperative communication protocol to hand over the tasks between them and execute efficient three-dimensional collaborative operations in time. This study has demonstrated integrating unmanned aerial/ground vehicles into a group through the control platform (i.e. App operation interface) that uses the Internet of Things. Therefore, pilots can make decisions and communicate through App for cooperative coordination, allowing a group of unmanned aerial/ground vehicles to complete the tasks flexibly. In addition, the payload attached to unmanned air/ground vehicles can carry out multipurpose monitoring that implements face recognition, gas detection, thermal imaging, and video recording. During the experiment of unmanned aerial vehicle, unmanned aerial vehicle will plan the flight path and record the movement trajectory with global positioning system when it is on duty. As a result, the accuracy of the planned flight path achieved 86.89% on average.

Supramolecular Porphyrin Nanostructures Based on Coordination-Driven Self-Assembly and Their Visible Light Catalytic Degradation of Methylene Blue Dye

A series of porphyrin triads (1–4), in which each triad is composed of a Sn(IV) porphyrin and two free-base (or Zn(II)) porphyrins, was synthesized and their self-assembled nanostructures were studied. Depending on the substituent on porphyrin moieties, each triad was self-assembled into a different nanostructure. In particular, the cooperative coordination of 3-pyridyl groups in the Sn(IV) porphyrin with the axial Zn(II) porphyrins in triad 4 leads to forming uniform nanofibers with an average width of 10–22 nm. Other triads without the coordinating interaction between the central Sn(IV) porphyrin and the axial porphyrins formed irregularly shaped aggregates in contrast. The morphologies of nanofiber changed drastically upon the addition of pyrrolidine, in which pyrrolidine molecules break down the self-assembly process by coordinating with the axial Zn(II) porphyrins. All porphyrin aggregates exhibited efficient photocatalytic performances on the degradation of methylene blue dye under visible light irradiation. The degradation efficiencies after 2 h were observed to be between 70% and 95% for the aggregates derived from the four triads.

The negotiation of meaning in dialogue interpreting

The objective of this study is to contribute to a better understanding of the negotiation of meaning between the participants of a bilingual interpreter-mediated interaction by analysing the effects of the verbalization of the inferences by the interpreter. The conceptual tools of Relevance Theory were applied to three interpreted excerpts of Russian-French psychotherapeutic interactions. The results suggest that, by verbalizing inferences, the interpreter co-creates a shared cognitive environment, reinforces intra- and inter-discursive coherence, diminishes the cognitive efforts of the recipient, and encourages primary parties to cooperate. The analysis of the cognitive processes at work in the excerpts tends to show that what has so far been treated as the interpreter’s “additions” or “expanded renditions” enables the latter to exercise cooperative coordination of interaction, and could therefore be more precisely called collaborative renditions.

Copper(ii) and iron(iii) complexes with arylhydrazone of ethyl 2-cyanoacetate or formazan ligands as catalysts for oxidation of alcohols

Cooperative coordination and ionic interactions assisted E/Z isomerization of arylhydrazone ligands lead to a variety of CuII complexes, which effectively catalyse the homogeneous oxidation of alcohols to carbonyl compounds.

Hydrothermal Synthesis and Charaction of α-Fe2O3 Mesocrystals and Nanorings

α-Fe2O3mesocrystals and nanorings have been prepared by hydrothermal method, using phosphate and sulfate ions as additives. Hydrothermal treated at 180 °C for 24 h in presence of C3H8NO6P and Na2SO4leads to the formation of capsule-shaped α-Fe2O3mesocrystals, when the reaction time prolonged to 96 h α-Fe2O3nanorings formed. It can tune the size and morphology of the final products by varying the ratios of phosphate and sulfate ions to ferric ions. XRD, SEM, TEM, HRTEM, UV-Vis, FT-IR were used to characterize the products. A formation process involving the selective adsorption and the cooperative coordination effect have been deduced.