Enhanced remediation of organotin compounds and metal(loid)s in polluted sediments: Chemical stabilization with mining-wastes and nZVI versus physical soil washing.

Here we describe two innovative approaches for remediating sediments contaminated with organotin compounds (OTCs, mainly TBT) and metal(loid)s. The first involves chemical stabilization through amendments with nanoscale zero-valent iron (nZVI), dunite mining waste, and coal tailings, materials that have not been previously studied for OTC remediation. The second focuses on physical soil washing, using grain-size separation and magnetic separation to isolate the most polluted fractions, thereby reducing the volume of contaminated material destined for landfills.

Correction: Inequality of the crowding-out effect of tobacco expenditure in Colombia.

[This corrects the article DOI: 10.1371/journal.pone.

Coordinative Self-assembly of π-Electron Magnetic Porphyrins.

π-Electron magnetic compounds on surfaces have emerged as a powerful platform to interrogate spin interactions at the atomic scale, with great potential in spintronics and quantum technologies. A key challenge is organizing these compounds over large length scales, while elucidating their resulting magnetic properties. Herein, we offer a relevant contribution toward this objective, which consists of using on-surface synthesis coupled with coordination chemistry to promote the self-assembly of π-electron magnetic porphyrin species.

Multibody system dynamics for bio-robotic design and simulation based on inching-locomotion caterpillar's gait: MBD-ILAR method.

Inching-locomotion caterpillars (ILAR) inspire the design of 'inch-worm' robots with biomimicry features, that can be adapted to different environments, such as natural, man-made, or other planets. Therefore, this work defines a novel mathematical method called Multi-Body Dynamics for Inching-Locomotion Caterpillar Robots (MBD-ILAR) to standardize the gait simulation of this type of machines, including a payload over the head to carry an object. The method is composed of 3 steps: (i) setting the model, where the input data is defined by: the phases of walk-stride (PHAWS) based on the bioinspired robotic design (BIROD) method, linkage dimensions of insect's morphology based on the geometrical kinematic analysis (GEKINS) algorithm, the joint types, the link's mass and center of mass, and the gravity constant.

A Kagome Lattice of Lanthanide Atoms in a 2D Er-Directed Metal-Organic Coordination Network.

Kagome lattices have attracted much attention due the very interesting properties they can exhibit, both from the electronic and the magnetic points of view, although much of the experimental studies have been reported on 3D metals or 2D nanosheets. In the past few years, on-surface synthesis has allowed the fabrication of strictly monolayer 2D metal-organic networks, many of them containing transition metals. In this paper we report the fabrication and the study of the electronic and magnetic properties of a monolayer 2D metal-organic network where the nodes are lanthanide atoms forming a kagome lattice.