Impact of the COVID-19 vaccination campaigns in Argentina during 2021: An observational quantification of the death probability for confirmed cases in Buenos Aires province.

Background: A SARS-CoV-2 (COVID-19) vaccination campaign was launched in Argentina in January 2021. The vaccines then available were administered to the population in several different schemes. This observational study presents a quantification of the impact of the different schemes on the probability of death for confirmed COVID-19 cases in Argentina's Buenos Aires Province.

Physicochemical and pharmacotechnical characterization of Prussian blue for future Prussian blue oral dosage forms formulation.

Ferric hexacyanoferrate, Fe [Fe(CN)] · xHO, known as Prussian blue (PB), has proven its effectiveness as an antidote in cases of accidental poisoning or poisoning caused by radioactive materials such as cesium (Cs) and thallium (Tl); which due to their solubility in water, when absorbed by the human body, cause serious damage to vital organs. The local development of a drug with PB as an active ingredient arises as a response to the civil and military needs established within the Ministry's pharmacy request for national defense. This fact contemplates the circumstances related to public health protection in the nuclear, radiological, biological and chemical (NRBQ) of the emergency institutions in health and national security.

Development of a formulation of potassium iodide tablets as an antidote against nuclear incidents.

Objectives: Potassium iodide (KI) is a treatment to neutralize radioactive agents that could be inhaled or ingested in nuclear incidents. The inorganic salt KI constitutes a source of iodine, which in the body acts by accumulating in the thyroid gland, producing its saturation, and thus preventing the fixation of radioactive iodine species. In Spain, the Military Defence Pharmacy Centre (CEMILFARDEF) was challenged to develop this antidote to be distributed among the population surrounding nuclear power plants, in only one new solid pharmaceutical form for oral administration, in order to replace the two pharmaceutical forms available, which are capsules for adults and oral solution for children, considered less versatile.

Optimizing leaf sweeping and collection in the Argentine city of Trenque Lauquen.

A solution strategy based on integer linear programming models has been developed for leaf sweeping operations in the Argentine city of Trenque Lauquen. The aim is to achieve efficiency in the assignment of sweepers to city blocks, the identification of leaf bag deposit points and the routes to be followed by collection trucks for leaf bag pickup. Previous to this strategy, sweeper assignments were improvised and inefficient, with blocks often left unswept.

An integer programming approach to a real-world recyclable waste collection problem in Argentina.

This article reports on the use of mathematical programming techniques to optimise the routes of a recyclable waste collection system servicing Morón, a large municipality outside Buenos Aires, Argentina. The truck routing problem posed by the system is a particular case of the generalised directed open rural postman problem. An integer programming model is developed with a solving procedure built around a subtour-merging algorithm and the addition of subtour elimination constraints.

Sixty-Seven Years of Land-Use Change in Southern Costa Rica.

Habitat loss and fragmentation of forests are among the biggest threats to biodiversity and associated ecosystem services in tropical landscapes. We use the vicinity of the Las Cruces Biological Station in southern Costa Rica as a regional case study to document seven decades of land-use change in one of the most intensively studied sites in the Neotropics. Though the premontane wet forest was largely intact in 1947, a wave of immigration in 1952 initiated rapid changes over a short period.

A method for optimizing waste collection using mathematical programming: a Buenos Aires case study.

A method is proposed that uses operations research techniques to optimize the routes of waste collection vehicles servicing dumpster or skip-type containers. The waste collection problem is reduced to the classic travelling salesman problem, which is then solved using the Concorde solver program. A case study applying the method to the collection system in the southern zone of Buenos Aires is also presented.