111. Characterization of brown carbon absorption in different European environments through source contribution analysisHector Navarro-Barboza, Jordi Rovira, Vincenzo Obiso, Andrea Pozzer, Marta Via, Andrés Alastuey, Xavier Querol, Jesús Yus-Díez, Matic Ivančič, Martin Rigler, 2025, izvirni znanstveni članek Opis: Brown carbon (BrC) is a fraction of organic aerosol (OA) that absorbs radiation in the ultraviolet and short visible wavelengths. Its contribution to radiative forcing is uncertain due to limited knowledge of its imaginary refractive index (k). This study investigates the variability of k for OA from wildfires, residential, shipping, and traffic emission sources over Europe. The Multiscale Online Nonhydrostatic Atmosphere Chemistry (MONARCH) model simulated OA concentrations and source contributions, feeding an offline optical tool to constrain k values at 370 nm. The model was evaluated against OA mass concentrations from aerosol chemical speciation monitors (ACSMs) and filter sample measurements, as well as aerosol light absorption measurements at 370 nm derived from an Aethalometer™ from 12 sites across Europe. Results show that MONARCH captures the OA temporal variability across environments (regional, suburban, and urban background). Residential emissions are a major OA source in colder months, while secondary organic aerosol (SOA) dominates in warmer periods. Traffic is a minor primary OA contributor. Biomass and coal combustion significantly influence OA absorption, with shipping emissions also notable near harbors. Optimizing k values at 370 nm revealed significant variability in OA light absorption, influenced by emission sources and environmental conditions. Derived k values for biomass burning (0.03 to 0.13), residential (0.008 to 0.13), shipping (0.005 to 0.08), and traffic (0.005 to 0.07) sources improved model representation of OA absorption compared to a constant k. Introducing such emission source-specific constraints is an innovative approach to enhance OA absorption in atmospheric models.
Ključne besede: aerosols, brown carbon, source contribution analysis
Objavljeno v RUNG: 04.03.2025; Ogledov: 569; Prenosov: 6
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112. Algebraic structures and graph theoryznanstvena monografija Ključne besede: groups, ring, field, lattice, hypergroups, hyperring, hyperfield, graph, hypergraph, equivalence relation, operation, hyperoperation
Objavljeno v RUNG: 04.03.2025; Ogledov: 508; Prenosov: 5
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119. On some differences between clitic climbing and clitic fronting : lecture at the IGG50, 50th Incontro di Grammatica Generativa, University of Padova (Italy), February 19, 2025Franc Marušič, Rok Žaucer, 2025, prispevek na konferenci brez natisa Ključne besede: clitics, clitic climbing, clitic fronting, restructuring
Objavljeno v RUNG: 03.03.2025; Ogledov: 421; Prenosov: 0
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120. The role of logistics companies in promoting sustainable transport and reducing carbon emissions in supply chains : diploma thesisFeđa Nenadić, 2025, diplomsko delo Opis: This thesis examines the role of logistics companies in advancing sustainable transport and reducing carbon emissions in supply chains. The motivation for the research is the significant environmental impact caused by logistics operations, coupled with the increasing demand for sustainable supply chain practices. The problem addressed is the lack of a comprehensive review on sustainable logistics practices, as existing literature focuses largely on isolated case studies rather than providing an overarching analysis of strategies across the sector. The aim of this thesis was to fill this gap by conducting a literature review to gain insights into the key challenges and opportunities in sustainable logistics. This topic is highly relevant given the growing pressure on logistics companies to adopt greener practices, yet there is limited comprehensive literature that synthesizes strategies and solutions available to address these environmental challenges. A systematic literature search was employed, classifying sources into different categories based on their focus on emission reduction strategies, transportation modes, and energy efficiency. The main results demonstrate the effectiveness of strategies such as investing in alternative fuel vehicles, optimizing routes through advanced algorithms, adopting cargo consolidation practices, fostering cross-industry collaboration, and implementing energy-efficient technologies in warehousing. The study concludes that although there are still obstacles to overcome, logistics companies possess considerable opportunities to reduce their environmental impact while maintaining efficiency in their operations. These findings offer valuable insights for companies seeking to enhance their environmental performance and contribute to the ongoing efforts toward sustainable supply chain management.
Ključne besede: Sustainable transport, logistics companies, carbon emissions, environmental conservation, technological advancements
Objavljeno v RUNG: 03.03.2025; Ogledov: 513; Prenosov: 19
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