Essays about: "Chemistry"

Showing result 1 - 5 of 504 essays containing the word Chemistry.

  1. 1. Complex REE zonations in metamorphic garnet reflect accessory mineral reactions

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Niclas Hultin; [2020-05-29]
    Keywords : Rare Earth Elements; REEs; Garnet; LA-ICP-MS; Sesia zone; Metamorphism;

    Abstract : A garnet from the Sesia Zone, NW Italy, was selected for Major and Rare Earth Element(REE) mapping, using LA-ICP-MS – a procedure previously not conducted at the Departmentof Earth Science at University of Gothenburg. The original inclusion assemblage of the garnetis preserved, and the mapping revealed two distinct changes in both garnet chemistry andinclusion assemblage, both which can be linked to the metamorphic development of theregion. READ MORE

  2. 2. Hydrological catchment analysis from characterisation of organic matter in stream water

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

    Author : Hannes Berg Wiklund; [2020-02-05]
    Keywords : Organic matter; Time-of-flight mass spectrometry; aquatic chemistry; catchment hydrology;

    Abstract : Organic matter (OM) in aquatic systems is a complex field which have rapidly developed duringthe last decade due to the introduction of high resolution mass spectrometers. The compositionof OM in the aquatic environment is directly dependent on factors such as oxygen supply, pHand the flow rate in the local system. READ MORE

  3. 3. An investigation of the interactions between clay nanoplatelets in the presence of monovalent and divalent salts, as well as cationic peptides utilising atomistic molecular dynamics

    University essay from Lunds universitet/Kemiska institutionen

    Author : Mona Koder Hamid; [2020]
    Keywords : clay; molecular dynamics simulations; physical chemistry; fysikalisk kemi; theoretical chemistry; teoretisk kemi; Chemistry;

    Abstract : Clays are negatively charged nanoplatelets with a layered silicate structure. It has been observed from small angle X-ray scattering measurements, and coarse-grained molecular dynamics simulations (CG-MD) that clay nanoplatelets are able to form stacks, known as tactoids, in the presence of divalent or multivalent counterions [8, 5]. READ MORE

  4. 4. The Principles of a Stable Community : 90 Years of Structured Integration in a Culturally Diverse New Town in Sardinia

    University essay from Uppsala universitet/Institutionen för kulturantropologi och etnologi

    Author : Alexander James Maxia; [2020]
    Keywords : new town; community spirit; design; town planning; community; structuration theory; productivity; Arborea; Sardinia; Italy;

    Abstract : An atom, a cell and a solar system have very little in common. My science teachers from high school will confirm that I am very far from being an expert on the matter but nontheless, I have studied these three systems in separate classes: chemistry, biology and astronomy. READ MORE

  5. 5. Development of a Method for Separation of Adenine Nucleotides

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Erika Miegel; [2020]
    Keywords : analytical chemistry; HPLC; HILIC; chromatography; technical analytical chemistry; teknisk analytisk kemi; Chemistry; Technology and Engineering;

    Abstract : Adenosine tetraphosphate, or Ap4A, is a nucleotide with very interesting proposed biological effects. Previous studies have indicated that blood glucose levels in mammals might increase in the presence of Ap4A, and that Ap4A might antagonize pancreatic ATP channels. READ MORE