Sökning: "chemical benchmarking"

Visar resultat 1 - 5 av 12 avhandlingar innehållade orden chemical benchmarking.

  1. 1. The measurement of chemical persistence in the field by benchmarking : Theory and Experiment

    Författare :Hongyan Zou; Michael McLachlan; Keri Hornbuckle; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; chemical benchmarking; persistence; half-lives; modeling; threshold benchmarking; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Persistence is one of the core criteria in chemical exposure and hazard assessment. It is often defined as the half-life for the removal of a chemical from a specified environment by transformation. Chemicals with long transformation half-lives may pose high risks for wildlife or humans and be subject to long-range transport to remote areas. LÄS MER

  2. 2. The measurement of chemical persistence in lakes using benchmarking techniques

    Författare :HONGYAN ZOU; Michael McLachlan; Carl-Magnus Mörth; Christian Bogdal; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; benchmarking; persistence; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : The persistence of a chemical that indicates resistance to degradation is one of the core criteria for exposure and hazard assessment of chemicals. However, it is rarely measured in the real environment because of the lack of appropriate methods. LÄS MER

  3. 3. Thermal Aspects and Electrolyte Mass Transport in Lithium-ion Batteries

    Författare :Henrik Lundgren; Göran Lindbgergh; Mårten Behm; Ann Mari Svensson; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; Energy storage; Lithium-ion batteries; Electrolytes; Temperature; Modeling; Hybrid electric vehicle; Plug-in hybrid electric vehicle; Chemical Engineering; Kemiteknik;

    Sammanfattning : Temperature is one of the most important parameters for the performance, safety, and aging of lithium-ion batteries and has been linked to all main barriers for widespread commercial success of electric vehicles.The aim of this thesis is to highlight the importance of temperature effects, as well as to provide engineering tools to study these. LÄS MER

  4. 4. First principles simulations of electron transport at the molecule-solid interface

    Författare :Hao Ren; Yi Luo; Nicolás Lorente; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; first principles; electron transport; solid surface; inelastic electron tunneling; Quantum chemistry; Kvantkemi;

    Sammanfattning : In this thesis I concentrate on the description of electron transport properties of microscopic objects, including molecular junctions and nano junctions, in particular, inelastic electron tunneling in surface-adsorbate systems are examined with more contemplations. Boosted by the rapid advance in experimental techniques at the microscopic scale, various electric experiments and measurements sprung up in the last decade. LÄS MER

  5. 5. Reactions of aqueous radiolysis products with oxide surfaces : An experimental and DFT study

    Författare :Cláudio Miguel Lousada Patrício; Mats Jonsson; Jean-Philippe Renault; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; hydrogen peroxide; hydrogen production; metal; oxides; lanthanide; catalysis; density functional theory; surface; reactions; chemistry; SRA - Energy; SRA - Energi; SRA - Production; SRA - Produktion;

    Sammanfattning : The reactions between aqueous radiolysis products and oxide surfaces are important in nuclear technology in many ways. In solid-liquid systems, they affect (and at the same time are dependent on) both the solution chemistry and the stability of materials under the influence of ionizing radiation. LÄS MER