Search results for "mass [charm]"
showing 10 items of 709 documents
2012
Abstract. A compact mobile aerosol research laboratory (MoLa) for stationary and mobile measurements of aerosol and trace gas characteristics was developed at the Max Planck Institute for Chemistry (MPIC) in Mainz, Germany. Major efforts were made to design an aerosol inlet system which is optimized and characterised for both, stationary and mobile measurements using a particle loss modelling approach. The instrumentation on board allows the determination of a multitude of physical and chemical aerosol parameters, for example particle number and mass concentration (PM1/2.5/10), particle size distributions in the diameter range 6 nm up to 32 μm, and chemical composition of the sub-micron aer…
Aerosol responses to precipitation along North American air trajectories arriving at Bermuda
2021
North American pollution outflow is ubiquitous over the western North Atlantic Ocean, especially in winter, making this location a suitable natural laboratory for investigating the impact of precipitation on aerosol particles along air mass trajectories. We take advantage of observational data collected at Bermuda to seasonally assess the sensitivity of aerosol mass concentrations and volume size distributions to accumulated precipitation along trajectories (APT). The mass concentration of particulate matter with aerodynamic diameter less than 2.5 µm normalized by the enhancement of carbon monoxide above background (PM2.5/ΔCO) at Bermuda was used to estimate the degree of aerosol loss durin…
Arctic black carbon during PAMARCMiP 2018 and previous aircraft experiments in spring
2021
Vertical profiles of the mass concentration of black carbon (BC) were measured at altitudes up to 5 km during the PAMARCMiP (Polar Airborne Measurements and Arctic Regional Climate Model simulation Project) aircraft-based field experiment conducted around the northern Greenland Sea (Fram Strait) during March and April 2018 from operation base Station Nord (81.6∘ N, 16.7∘ W). Median BC mass concentrations in individual altitude ranges were 7–18 ng m−3 at standard temperature and pressure at altitudes below 4.5 km. These concentrations were systematically lower than previous observations in the Arctic in spring, conducted by ARCTAS-A in 2008 and NETCARE in 2015, and similar to those observed …
Size distribution, mass concentration, chemical and mineralogical composition and derived optical parameters of the boundary layer aerosol at Tinfou,…
2009
During the SAMUM 2006 field campaign in southern Morocco, physical and chemical properties of desert aerosols were measured. Mass concentrations ranging from 30 Ã�¼g m-3 for PM2.5 under desert background conditions up to 300,000 Ã�¼g m-3 for total suspended particles (TSP) during moderate dust storms were measured. TSP dust concentrations are correlated with the local wind speed, whereas PM10 and PM2.5 concentrations are determined by advection from distant sources. Size distributions were measured for particles between 20 nm and 500 Ã�¼m diameter (parameterizations are given). Two major regimes of the size spectrum can be distinguished. Smaller than 500 nm particle diameter, the distrib…
METHODS USED IN AUDIENCE MEASUREMENT OF MASS MEDIA CHANNELS TYPES, RESULTS AND IMPACT
2015
In the present research I will analyze the reactions and opinions of the interviewed persons regarding the main methods used in audience measurement of mass media channels and also it will be analyzed the types, the results and the impact. At the same time, it is aimed at bringing in a connection between the results of audience surveys and the communication strategies developed by public and private companies. Thereby, I will use the interview as a qualitative research method, to confirm or infirm the hypothesis of the present research.
Representation of ASD in mass media: analysis of a generalist newspaper
2020
Los medios de comunicación influyen notablemente en sus consumidores, por lo que no son meros informadores, sino que también son creadores de opinión. Este hecho es relevante para el ámbito de la inclusión, en tanto que las necesidades específicas de apoyo educativo son también un tema tratado por los medios de comunicación. En el presente estudio se analizan los artículos que abordan la temática relacionada con el Trastorno del Espectro Autista (TEA) en el diario El País durante el año 2017. Los resultados del análisis de contenido de los artículos indican que el TEA fue un tema de interés en el año 2017. Los contenidos más recurrentes fueron las causas del TEA, frecuentemente desmintiendo…
Diffusion of Drone Journalism: the Case of Finland, 2011-2020
2020
This article details Finnish news organizations’ adoption of drones for journalistic purposes from 2011 to 2020. The theoretical starting point of the article is Rogers’ (1962) diffusion of innovations theory, which explains how new ideas and technologies spread in societies. The main empirical data for the study were derived from a phone survey conducted among the 80 most popular newspapers in Finland. The findings reveal that drone journalism in Finland has already diffused from a few pioneering organizations to a large number of newsrooms, including regional, mid-sized newspapers. Most of the newspapers are either using in-house drones, buying commissioned images, or using both strategie…
DEEP EUTECTIC SOLVENTS: FROM SUSTAINABLE REACTION MEDIA TO SUPRAMOLECULAR MATERIALS
¿Reproduciendo la lógica mediática?. Un estudio empírico sobre el impacto del debate electoral español en nuevos y viejos medios
2013
Producción Científica
La blogosfera política española en las Elecciones Generales 2011. Una comparación entre blogs de candidatos, periodistas y ciudadanos
2015
En: Doxa Comunicación : revista interdisciplinar de estudios de comunicación y ciencias sociales. ISSN 1696-019X n. XXI, 2015, pp 78-112 El presente estudio propone un análisis de la blogosfera política española durante la campaña electoral previa a las Elecciones Generales del 20 de noviembre de 2011, con el fin de identificar los principales temas de discusión que centraron el debate en tres tipos de bitácoras: seis blogs de candidatos políticos de las principales formaciones políticas españolas, cuatro a cargo de periodistas destacados de la esfera pública central y cuatro de ciudadanos anónimos. Se plantea un análisis de contenido fundamentado en 57 categorías temáticas para establecer …