Avancerad sökning

Hittade 4 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Ion channels and intrinsic membrane properties of locomotor network neurons in the lamprey spinal cord

    Författare :Di Wang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Ion channels; calcium activated non-selective cation current ICAN ; L-type LVA calcium channels Cav 1.3 ; calcium channels; calcium imaging; NMDA; postinhibitory rebound PIR ; lamprey; central pattern generator CPG ; locomotion;

    Sammanfattning : NMDA-receptor dependent membrane potential oscillations and postinhibitory rebound are examples of intrinsic membrane properties of many neurons of rhythm-generating networks, and are considered to play major roles in the operation of the spinal locomotor network of the lamprey vertebrate model. A significant feature of many lamprey spinal cord neurons is their ability to generate pacemaker-like membrane potential oscillations in the presence of the glutamate agonist NMDA. LÄS MER

  3. 2. Polyesters with indole as sustainable aromatic component

    Författare :Ping Wang; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; indole; sustainable polyesters; high performance; recycling; biodegradation;

    Sammanfattning : Plastics are widely used in our daily lives and industry. Unfortunaltely, most plastics are produced from non-renewable fossil resources. The transition toward sustainable resources such as various biomass is critically important for the future of plastic industry and the whole society. LÄS MER

  4. 3. The chemistry of flotation activation and depression of iron-containing sulphide minerals

    Författare :Xianghuai Wang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mineralteknik; Mineral Processing;

    Sammanfattning : Thermodynamic calculations, electrochemical techniques, flotation and adsorption tests were used to study the physico-chemical principles involved in the flotation, activation and depression of the common ironcontaining sulphide minerals. Thermodynamic calculations on iron-xanthate-sulphur-water systems indicate that insoluble ferric hydroxo- xanthates can be obtained at a very low xanthate concentration in the neutral to weakly alkaline pH range, in which no liquid dixanthogen is formed. LÄS MER

  5. 4. Isolation and characterization of novel intestinal polypeptides of the enteroinsular and brain-gut axes and of macrophages

    Författare :Zheng-wang Chen; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The gastrointestinal tract has been recognized as our largest endocrine organ, from which many peptide hormones, neuropeptides and growth factors have been isolated. There is also increasing evidence that the gastrointestinal tract can be considered as our largest immune organ, from which many antibacterial peptides, cytokines, cytotoxins and chemokines have been characterized. LÄS MER