Essays about: "TOF"

Showing result 21 - 25 of 124 essays containing the word TOF.

  1. 21. Non-target screening of sediment samples fromthe Canadian Arctic: comparing two different gas chromatography – high resolution mass spectrometry (GC-HRMS) techniques

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Mathilda Timner; [2022]
    Keywords : Arctic marine sediment ׀ GC×GC-HR-ToF-MS ׀ GC-Orbitrap-MS ׀ Identification ׀ Non-target screening ׀ Organic pollutants;

    Abstract : Since the late 18th century, chemicals have been industrially produced, and used by consumers. Today, the number of registered chemicals are over 150 000 in North America and Europe alone, and the number is predicted to increase. READ MORE

  3. 22. Using metabolic profiles to screen for novel compounds in deep-sea sponges

    University essay from Uppsala universitet/Institutionen för farmaceutisk biovetenskap

    Author : Samira Hilowle; [2022]
    Keywords : Metabolomics; Deep-sea sponges;

    Abstract : The chemical diversity of the phylum Porifera have provided marine natural products (MNPs) such as alkaloids, terpenoids and peptides with ranging biological activity. Every two days a novel compound deriving from sponges are discovered. READ MORE

  4. 23. Prevalence of ctrA and crgA genes in non-meningococcal neisserial species colonising the upper respiratory tract among university students in Örebro

    University essay from Örebro universitet/Institutionen för medicinska vetenskaper

    Author : Magnus Klinteskog; [2021]
    Keywords : Neisseria; meningitidis; ctrA; crgA; carrier;

    Abstract : Introduction: A Neisseria meningitidis carrier study has been conducted among students at Örebro university in Sweden in 2018 and 2019. Pharyngeal samples were collected from 3489 students. PCR for the genes ctrA and crgA was run on all samples. The positive samples were then cultured on agar plates to find the N. READ MORE

  5. 24. Data Processing in Accelerator-Based Analysis of Wall Materials From Controlled Fusion Devices

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Arvin Quoreshi; [2021]
    Keywords : ERDA; ToF; Ion Beam Analysis; Potku;

    Abstract : The goal for this project was to analyze and understand the noise of the ion beam analysis technique, Elastic Recoil Detection Analysis (ERDA). This was done by examining two models: Classical models and a prediction model. The prediction model is a parameterized noise distribution model. READ MORE

  6. 25. Att raka eller inte raka : en jämförelse av förekomsten av bakterier före och efter rakning inför venös blodprovstagning på hund

    University essay from SLU/Dept. of Clinical Sciences

    Author : Josefin Lindskog; Linn Ekberg; [2021]
    Keywords : bakterier; blodprov; desinfektion; hygien; päls;

    Abstract : I veterinärmedicinsk litteratur anges ofta att rakning bör ske inför blodprovstagning via v. cephalica på hund, då det anses vara mer hygieniskt. Dock finns det mycket få studier som undersökt den hygieniska aspekten av rakning. Däremot finns det konstaterade negativa effekter av rakning. READ MORE