Essays about: "metylering"

Showing result 1 - 5 of 15 essays containing the word metylering.

  1. 1. Analysis of DNA methylation changes and behavioural outcomes in adulthood induced by prenatal exposure to a mixture of endocrine disrupting chemicals

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Shane Kamil; [2022]
    Keywords : Toxicology; Developmental biology; Epigenetics; Genetics; Methylation; EDC; Toxins; Chemicals; Mixture effect; Mediation; Toxikologi; Utvecklingsbiologi; Epigenetik; Genetik; Metylering; Miljögifter;

    Abstract : Endocrine disrupting chemicals, or EDCs, are some of the most prevalent toxic chemicals found in the environment because of human activity and they have a variety of adverse effects on both humans and wildlife. A proposed mechanism through which EDCs can negatively affect an organism is via an epigenetic mechanism known as DNA methylation, which can affect the development of the organism with negative outcomes later in life. READ MORE

  3. 2. Charge transfer states at polymer solar cell interfaces : Insights from atomic-scale modeling

    University essay from Karlstads universitet/Institutionen för ingenjörsvetenskap och fysik (from 2013)

    Author : Rickard Svensson; [2022]
    Keywords : organic solar cells; OSC; polymer; interface; charge transfer; non-fullerene acceptor; PYT; PBDB-T; DFT; TD-DFT; conformation; alkyl groups; methylation; HOMO; LUMO; FMO; NTO; UV-Vis; DOS; exciton; exciton binding energy; dipole moment; open-circuit voltage; organiska solceller; OSC; polymer; gränssnitt; laddningsöverföring; icke-fullerenacceptor; PYT; PBDB-T; DFT; TD-DFT; konformation; alkylgrupper; metylering; HOMO; LUMO; FMO; NTO; UV-Vis; DOS; exciton; excitonbindningsenergi; dipolmoment; tomgångsspänning;

    Abstract : Organic solar cells (OSCs) based on non-fullerene acceptors (NFAs) have attracted a great deal of attention in recent years due to their rapidly increasing efficiency and enormous potential. In this work, the optical and electronic properties of systems containing the very promising non-fullerene acceptor PYT have been thoroughly studied with the use of the density functional theory (DFT) and the time-dependent density functional theory (TDDFT). READ MORE

  4. 3. Chemotaxis in E.coli Bacteria

    University essay from KTH/Matematik (Avd.)

    Author : Fredrik Stenkvist; [2021]
    Keywords : ;

    Abstract : Bacterial chemotaxis refers to bacteria's way of moving towards more hospitable environment. The bacteria does this by taking point-wise measurements of the amount of chemical attractants/repellents in its surroundings and comparing them, using the bacteria's built in "memory" the methylation level, to determine if the current direction is good or not. READ MORE

  5. 4. Epigenetiskt arv

    University essay from SLU/Dept. of Animal Breeding and Genetics

    Author : Moa Lindell; [2019]
    Keywords : epigenetik; epigenetisk nedärvning; epigenetiska mekanismer;

    Abstract : Epigenetik är den del av genetiken som behandlar förändringar i genuttryck som är oberoende av förändringar i DNA-sekvensen. Det som styr vilka gener som uttrycks och får effekt på fenotyp har studerats av forskare sedan 70-80-talet. READ MORE

  6. 5. SYNTHESIS OF β-D-RIBOPYRANOSIDES DERIVATIVES FROM β-D-XYLOPYRANOSIDE

    University essay from Lunds universitet/Kemiska institutionen

    Author : Christopher Musonda; [2018]
    Keywords : organic chemistry; organisk kemi; xylos; träsocker; proteoglykan; Chemistry;

    Abstract : The aim of this thesis was to synthesize various β-D-ribopyranoside derivatives with different C-4 functional groups, using D-xylose as the starting material. The desired modifications were deoxygenation, fluorination, methylation and epimerization of the C-4 hydroxyl group. READ MORE