Process Research Ortech (Canada)

Organic electrosynthesis opens new avenues of reactivity and promises more sustainable practices in the preparation of fine chemicals and pharmaceuticals. The full value of this approach will be realized by taking these processes to the production scale; however, achieving this goal will require a better understanding of the influence of mass transport on reaction behavior and the interactions between reactive species and electrodes inherent to organic electrosynthesis. The limited options for cell geometries used on small scale limit elucidation of these features. Here, we show how advanced cell geometries allow us to control the interplay between reaction mechanism and mass transport, leading to improved performance of three modern organic electrosynthetic reactions. Each reaction shows a unique relationship with mass transport, highlighting the importance of understanding this relationship further to maximize the utility of organic electrosynthesis at scale.

The Canada India Health-care Summit 2021, (“CIHS 2021”), is the 3rd Summit, focusing on healthcare, organized by Canada India Foundation, as part of an ongoing series of thematic Canada India Forums, to highlight opportunities for collaboration between Canada and India in key strategic sectors and make public policy recommendations to the respective governments. The Federation of Indian Chambers of Commerce and Industry, Toronto Rehabilitation Institute – University Health Network and the Consulate General of India in Toronto were co-organizers of the Summit. CIHS 2021 was focused on three themes: (1) artificial intelligence and its contribution to overcome COVID-19, (2) biotechnology and its contribution to overcome COVID-19, and (3) pandemic responses and initiatives. The Summit was held on May 20, 2021– May 21, 2021, and was preceded by three webinars. More than 60 healthcare experts and government leaders spoke at the Summit, to nearly 500 virtual attendees. A full report of the Summit with specific policy recommendations was made to the Canadian and Indian governments.

Base metal sulphide ores exist in many areas of the World and are a potential source of copper, nickel and cobalt. A large portion of copper and nickel is produced from sulphide concentrates by the conventional smelting and hydrometallurgical processes. Pyrometallurgical processes have several detriments including high capital costs, losses of valuable metal by-products in slags and residues, and environmental constraints pertaining to gaseous emissions and solid residues. Hydrometallurgical processes using autoclaves are capital intensive and offer materials handling and maintenance challenges. Process Research ORTECH has developed a unique atmospheric mixed chloride leaching process for the recovery of copper and nickel from sulphide concentrates. This process also produces value added by-products of high purity cobalt, iron oxide and recycles chloride lixiviant to the leaching stage. In this paper, leaching of sulphide concentrates with lixiviant containing hydrochloric acid and magnesium chloride, separation reaction mechanisms, production of elemental sulphur and a potential process flowsheet is described.

La figura del político socialista Julio Álvarez del Vayo y Olloqui ha estado desde siempre rodeada de polémica. A lo largo de este artículo se mostrará cómo se fue tejiendo esa leyenda de descrédito que le persiguió durante toda su vida, incluso después de muerto, y que tuvo como sello distintivo la deslealtad tras ser acusado de ser un agente soviético, norteamericano…o ambos, un comunista encubierto o un traidor a Largo Caballero y al PSOE. Asimismo se intentará aclarar hasta qué punto su mala reputación fue consecuencia de su dualidad ideológica más que de los hilos de la traición.

This chapter contains sections titled: Introduction Blanking Activated (Man Made) Carbon Tests on Goldstrike Ore Samples Discussion Acknowledgement

Failure of an old rope from a stringing lattice transmission towers occurred in winter while the rope was being removed to make way for a new rope. Fracture took place around mid-span. At that time, ambient temperature was −22 °C. Wire rope was in service for nearly 50 years. We were given the mandate to determine the reasons for the fracture of the wire rope and also to suggest measures to prevent such failures from occurring. The study involved laboratory testing (mechanical and metallographic) of representative wire rope samples. The effect of low temperature (from room temperature to −40 °C) on the tensile behavior of wires and wire rope samples was evaluated. In addition, we designed an instrumented impact test to assess the effect of notches, low temperatures and dynamic loading on the fracture behavior; however, no standards were available for direct comparison. Optical metallography was used to judge the extent of corrosion and the nature of microstructure and the cleanliness of the steel. The fracture morphology of broken tensile and impact specimens was carried out using scanning electron microscopy to establish relations between test parameters and fracture modes. Results indicate that considerations have to be given to the occurrence of corrosion, notches, low temperatures, and dynamic loading conditions when replacing wire ropes and this may necessitate the replacement of wire rope earlier than the time dictated by the criterion of 10% loss in breaking strength. Results also indicate that impact testing is a better evaluator of the susceptibility of wire ropes to brittle fracture than tensile tests.

The use of millimetre-wave imaging to identify threat objects such as guns and bomb material concealed on the person is well documented. However, the technology has been hindered by the performance and cost barriers typically associated with imaging at mm-wave frequencies. A novel scanning technique that minimises the receiver count while operating at very high efficiency levels has made it possible to build a cost-effective and high-performance mm-wave imager that can make security screening a commercial reality. The imager design allows for either passive or active operation and its compact form factor is suitable for practical installation in security channel situations. The uses of this technology include portal screening of personnel for high-resolution imaging of concealed threat objects or longer distance surveillance type monitoring of checkpoints and crowds. This presentation details the use of the imager in an active configuration to observe a checkpoint or crowd scene at stand-off distances of up to 50 metres. Target objects to be detected are the hidden metal components associated with suicide bomb constructions. A typical bomb consists of several explosive filled pipes strapped to the body or clusterings of small metallic objects embedded in explosives. Trials at 94GHz have yielded positive results by showing the presence of concealed metallic objects on people at distances of 25 metres. Objects detected have included simulated bomb constructions such as groups of metal pipes and clusters of nuts and bolts. These tests have been conducted using a Gunn based CW source and direct detect receiver unit. Further enhancement of the system includes the use of an FMCW front-end configuration.