Sökning: "absence and presence"

Visar resultat 1 - 5 av 713 avhandlingar innehållade orden absence and presence.

  1. 1. Biophysical studies of the actin-myosin motor system and applications in nanoscience

    Författare :Mohammad A. Rahman; Alf Månsson; Kazuhiro Oiwa; Linnéuniversitetet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; myosin II; actin; actomyosin force generating cycle; blebbistatin; in vitro motility assay; actin affinity purification; blocking actin; bionanodevices; proteinase k; SDS; triton X100; surface recycling; engineered myosin motor; programmable gate; biocomputation.; Biomedical Sciences; Biomedicinsk vetenskap;

    Sammanfattning : The actin-myosin motor system plays important roles in cellular processes. In addition, actin and myosin have been used for developments towards nanotechnological applications in recent years. LÄS MER

  3. 2. Atmospheric corrosion of Mg and MgAl alloys – characterization and mechanisms

    Författare :Mehrdad Shahabi Navid; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; EDX; CO2; XPS; Mg and MgAl alloys; NaCl; Atmospheric corrosion; Characterization; 3D imaging; SEM; BIB; Thin film; FTIR; XRD; Pitting; Interference microscopy; FIB;

    Sammanfattning : The atmospheric corrosion of Mg and MgAl alloys was investigated. Corrosion tests were performed in the laboratory under controlled environment. CP Mg, AM50 and AZ91 samples were exposed at 95% RH and 22°C in the presence and in the absence of 400 ppm CO2 for 24 h to 672 h. The passive film was characterized by means of XPS, FTIR, AES and XRD. LÄS MER

  4. 3. Cultural Techniques of Presence : Luis de Góngora and Early Modern Media

    Författare :Adam Wickberg Månsson; Anders Cullhed; Mercedes Blanco; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Luis de Góngora; Cultural Techniques; Media; Presence; Manuscript; Print; Early Modern; Spain; Portraits; Monuments; Memory; Death; Cultural History; Poetry; Actor; Network; Philip II; Paper; Count-Duke of Olivares; Materiality; Object; Writing; Technology; Literature; litteraturvetenskap;

    Sammanfattning : This dissertation investigates the materiality of Early Modern Spanish poetry and particularly that of Luis de Góngora (1561-1627). Its purpose is to focus on physical and concrete aspects in order to create new knowledge of the past. LÄS MER

  5. 4. Radiation Oncology Data and Modelling Side Effects after Radiation Therapy

    Författare :Caroline Olsson; Göteborgs universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dose and side effect data; dose-volume response; fractionation effect; LQ model; sequential two-phase radiotherapy; head and neck cancer; parotid gland; xerostomia; pelvic radiotherapy; gynecological cancer; pubic bone; pain; data integration; xerostomia;

    Sammanfattning : Although modern radiation therapy techniques have the ability to conform the dose distribution of ionizing radiation tightly around the volume to be treated, unwanted irradiation to surrounding organs remains a problem. The probability of a side effect arising in the normal tissue of a patient after radiation therapy can be modelled by sigmoid mathematical functions known as normal tissue complication probability (NTCP) models. LÄS MER

  7. 5. Twist-Symmetric Periodic Structures : Properties and Applications

    Författare :Oskar Zetterström; Oscar Quevedo-Teruel; Martin Norgren; Nelson Fonseca; Jorge Ruiz-Cruz; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : In this thesis, periodic structures with higher symmetries symmetries are discussed. The main focus of the thesis is on twist symmetries. Importantly, the attractive properties of twist symmetries for the control of electromagnetic wave propagation are demonstrated. LÄS MER