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Showing result 1 - 5 of 490 essays matching the above criteria.

  1. 1. Application of Fourier Transforms to time-resolved ambient pressure spectroscopy operando studies of CO oxidation over Pt(111)

    University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Synkrotronljusfysik

    Author : Grigore-Leon Ratiu; [2024]
    Keywords : Physics and Astronomy;

    Abstract : The study of heterogeneous catalysis has important implications in increasing the efficiency of industrial processes and in reducing the emissions of greenhouse gases from sources such as automobiles. A reaction with high industrial relevance is the oxidation of CO on noble metal catalysts. READ MORE

  3. 2. Comparison of VADER and Pre-Trained RoBERTa: A Sentiment Analysis Application

    University essay from Lunds universitet/Statistiska institutionen

    Author : Linda Erwe; Xin Wang; [2024]
    Keywords : sentiment analysis; natural language processing; BERT; VADER; sustainability report; Mathematics and Statistics;

    Abstract : Purpose: The purpose of this study is to examine how the overall sentiment results from VADER and a pre-trained RoBERTa model differ. The study investigates potential differences in terms of the median and shape of the two distributions. Data: The sustainability reports of 50 independent random companies are selected as the sample. READ MORE

  4. 3. Mängden död ved i värdekärnor i Söderåsens nationalpark

    University essay from SLU/Southern Swedish Forest Research Centre

    Author : Gustav Thurell; [2024]
    Keywords : volym död ved; stående död ved; liggande död ved; bokskog; nedbrytningsgrad; värdekärna;

    Abstract : There is a lack of knowledge about the development of the dead wood in former production beech (Fagus sylvatica) forests that have been protected. The present study has been carried out in Söderåsen National Park to compare the distribution of dead wood in relatively unaffected beech forests that have been protected for a long time (A-value cores) and older, previously managed beech forest that has only been protected for 20-30 years (B-value cores). READ MORE

  5. 4. Exploring alternative surfactants to replace PEG within lipid nanoparticles

    University essay from Lunds universitet/Livsmedelsteknik och nutrition (master); Lunds universitet/Bioteknik (CI); Lunds universitet/Bioteknik (master)

    Author : Elina Edidovica; [2024]
    Keywords : Lipid nanoparticle; polyethelyne glycol PEG ; alpha-tomatine; N-hexadecyl beta d-maltoside HDM ; DOPC; DPPC; cholesterol; film hydration; stability study; DLS; Cryo-TEM; SAXS; pharmaceutical formulation; Chemistry;

    Abstract : Over the past decade an increasing amount of studies has demonstrated that PEGylation not only precipitates reductions in drug delivery efficiency but also triggers the immune system to produce antibodies, specifically anti-PEG antibodies. The objective of my thesis is to explore alternative surfactants that could viably replace PEG within lipid nanoparticles. READ MORE

  6. 5. Dare. Dream. Done. [Sparkles emoji] : Pragmatic functions and sentiment of emojis in tweets by American, English, Australian, Indian, and Nigerian users

    University essay from Karlstads universitet/Fakulteten för humaniora och samhällsvetenskap (from 2013)

    Author : Kristoffer Olsén; [2024]
    Keywords : ambiguity; computer-mediated communication; cyberpragmatics; emoji; emoji usage pattern; national variety; pragmatics; sentiment; tweets; användningsmönster för emojis; attityd; cyberpragmatik; datorförmedlad kommunikation; emoji; nationell variation; pragmatik; tvetydighet; tweets;

    Abstract : Emojis can be ambiguous, even when used within one and the same language and geographic region, but they are also a globally accessible language in computer-mediated communication. This paper aims to examine if emoji usage across five different national varieties of English (American, English, Australian, Indian, and Nigerian), geographically located on five different continents, exhibits similar pragmatic functionality and sentiment. READ MORE