Marine Submicron Aerosols from the Gulf of Mexico: Polluted and Acidic with Rapid Production of Sulfate and Organosulfates.

We measured submicron aerosols (PM1) at a beachfront site in Texas in Spring 2021 to characterize the "background" aerosol chemical composition advecting into Texas and the factors controlling this composition. Observations show that marine "background" aerosols from the Gulf of Mexico were highly processed and acidic; sulfate was the most abundant component (on average 57% of total PM1 mass), followed by organic material (26%). These chemical characteristics are similar to those observed at other marine locations globally. However, Gulf "background" aerosols were much more polluted; the average non-refractory (NR-) PM1 mass concentration was 3-70 times higher than that observed in other clean marine atmospheres. Anthropogenic shipping emissions over the Gulf of Mexico explain 78.3% of the total measured "background" sulfate in the Gulf air. We frequently observed haze pollution in the air mass from the Gulf, with significantly elevated concentrations of sulfate, organosulfates, and secondary organic aerosol associated with sulfuric acid. Analysis suggests that aqueous oxidation of shipping emissions over the Gulf of Mexico by peroxides in the particles might potentially be an important pathway for the rapid production of acidic sulfate and organosulfates during the haze episodes under acidic conditions.

Primary and secondary organic winter aerosols in Mediterranean cities under different mixing layer conditions (Barcelona and Granada).

PM10 was collected during an EMEP winter campaign of 2017-2018 in two urban background sites in Barcelona (BCN) and Granada (GRA), two Mediterranean cities in the coast and inland, respectively. The concentrations of PM10, organic carbon (OC), elemental carbon (EC), and organic molecular tracer compounds such as hopanes, anhydro-saccharides, polycyclic aromatic hydrocarbon, and several biogenic and anthropogenic markers of secondary organic aerosols (SOA) were two times higher in GRA compared to BCN and related to the atmospheric mixing heights in the areas. Multivariate curve resolution (MCR-ALS) source apportionment analysis identified primary emissions sources (traffic + biomass burning) that were responsible for the 50% and 20% of the organic aerosol contributions in Granada and Barcelona, respectively. The contribution of biomass burning was higher in the holidays than in the working days in GRA while all primary combustion emissions decreased in holidays in BCN. The MCR-ALS identified that oxidative species and SOA formation processes contributed to 40% and 80% in Granada and Barcelona, respectively. Aged SOA was dominant in Granada and Barcelona under stagnant atmospheric conditions and in presence of air pollution. On the other hand, fresh SOA contributions from α-pinene oxidation (cis-pinonic acid) were three times higher in Barcelona than Granada and could be related to new particle formation, essentially due to overall cleaner air conditions and elevated air temperatures.

SMART: a service-oriented architecture for monitoring and assessing Brazil's Telehealth outcomes

Abstract Introduction Brazilian Telehealth Program was instituted by the Ministry of Health in 2007. Its initial structure was composed by nine telehealth centers administered by public higher education institutions. No standards, processes, applications or quality indicators had been defined since its creation. All this, combined with the decentralization of the centers, led each one of them to develop their own system, with different programming languages and architectures. The lack of regulation and integration of the information with the Ministry of Health made it difficult to evaluate the program. In this context, this paper describes the specification, implementation and validation of an architecture, entitled SMART, to integrate the various telehealth platforms developed by the centers. Such architecture aims to standardize information so that the Ministry of Health can monitor and evaluate the results of Telehealth actions. Methods SMART's architecture consists of four main components: a web tool for data manipulation; a web service to receive the center's production data; a component responsible for converting the received data into decision support data; and a component that collects data from external sources to compose the data warehouse. Results The architecture was validated with performance tests, which were executed under extreme workloads. The results of the experiments were summarized in order to attest SMART's effectiveness. Conclusion The analysis of the results obtained on real data shows that the project's performance remained stable under the workloads and its high quality was proven due to the absence of errors during the experiments.

Applications Based on Service-Oriented Architecture (SOA) in the Field of Home Healthcare.

This article makes a literature review of applications developed in the health industry which are focused on patient care from home and implement a service-oriented (SOA) design in architecture. Throughout this work, the applicability of the concept of Internet of Things (IoT) in the field of telemedicine and health care in general is evaluated. It also performs an introduction to the concept of SOA and its main features, making a small emphasis on safety aspects. As a central theme, the description of different solutions that can be found in the health industry is developed, especially those whose goal is health care at home; the main component of these solutions are body sensor networks. Finally, an analysis of the literature from the perspectives of functionalities, security implementation and semantic interoperability is made to have a better understanding of what has been done and which are probable research paths to be studied in the future.

SOA-BD: Service Oriented Architecture for Biomedical Devices

Introduction: The communication of information systems with biomedical devices has become complex not only due to the existence of several private communication protocols, but also to the immutable way that software is embedded into these devices. In this sense, this paper proposes a service-oriented architecture to access biomedical devices as a way to abstract the mechanisms of writing and reading data from these devices, thus contributing to enable the focus of the development team of biomedical software to be intended for its functional requirements, i.e. business rules relevant to the problem domain. Methods The SOA-BD architecture consists of five main components: A Web Service for transport and conversion of the device data, Communication Protocols to access the devices, Data Parsers to preprocess data, a Device Repository to store data and transmitted information and Error handling, for error handling of these information. For the development of SOA-BD, technologies such as the XML language and the Java programming language were used. Besides, Software Engineering concepts such as Design Patterns were also used. For the validation of this work, data has been collected from vital sign monitors in an Intensive Care Unit using HL7 standards. Results The tests obtained a difference of about only 1 second in terms of response time with the use of SOA-BD. Conclusion SOA-BD achieves important results such as the reduction on the access protocol complexity, the opportunity for treating patients over long distances, allowing easier development of monitoring applications and interoperability with biomedical devices from diverse manufacturers.

MODELO ARQUITECTÓNICO PARA INTEROPERABILIDAD ENTRE INSTITUCIONES PRESTADORAS DE SALUD EN COLOMBIA / ARCHITECTURAL MODEL FOR INTEROPERABILITY BETWEEN HEALTHCARE SERVICE PROVIDERS IN COLOMBIA

En la actualidad Gobiernos, IPS y desarrolladores de software enfrentan la necesidad de mejorar la eficiencia de los sistemas de información en salud mediante una adecuada gestión de la información y la implementación de TICS. Una de las áreas de interés, es el desarrollo de perfiles de interoperabilidad que permita intercambiar información y mejorar la colaboración entre los diferentes actores del sistema de salud. El objetivo del presente artículo es definir y validar un modelo arquitectónico de interoperabilidad entre sistemas de información de IPS en Colombia. El modelo, sustentando en normatividad Colombiana, sugiere el uso de SOA como referencia para definir la arquitectura software y el estándar HL7 para el intercambio de mensajes y documentos clínicos. Posteriormente se evalúa el modelo mediante un grupo de profesionales con experiencia en desarrollo de sistemas de información y una prueba piloto basada en dos escenarios de interoperabilidad en tres IPS de Popayán. El modelo busca aportar una metodología de modelamiento y desarrollo de software en IPS y empresas desarrolladoras, mejorando así el nivel de entendimiento y control sobre las transacciones de información presentes en la prestación de servicios.

Nowadays governments, health services organizations and software developers face the need to improve the efficiency of information systems in health through information management and ICT implementation. One of the areas of interest is the development of interoperability profiles that allow exchange information and improve collaboration between different actors in the health system. The aim of this paper is to define and validate an architectural model of interoperability between information systems on IPS in Colombia. The model, grounded in Colombian legislation, suggests the use of SOA as a reference to define the software architecture and HL7 standard for the exchange of messages and clinical documents. Subsequently the model is evaluated by a group of professionals with experience in information systems development and piloted based on two interoperability scenarios in three IPS of Popayán. The model aims to provide a methodology for software modeling and development among health services organizations, improving the level of understanding and control over information transactions present in the delivery of services.