Sökning: "osmotic swelling"

Hittade 3 uppsatser innehållade orden osmotic swelling.

  1. 1. The swelling pressure of bentonite and sand mixtures

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Sandra Sánchez González; [2013]
    Nyckelord :Swelling pressure; bentonite and sand mixture; crystalline swelling; osmotic swelling; mechanistic model; montmorillonite.;

    Sammanfattning : The compacted bentonites are used as buffer and backfill materials for engineering barriers for high-level nuclear waste repositories located underground. For this purpose, it is very important to evaluate the swelling characteristics of this clay. The swelling capacity is one of the most important properties of the bentonite clay. LÄS MER

  3. 2. Comparison between two different cryoprotectants for human sperm, with emphasis on survival

    Kandidat-uppsats, Institutionen för medicinsk biokemi och mikrobiologi

    Författare :Karin Eklund; Malin Engström; [2008]
    Nyckelord :gradient preparation; cryopreservation; sperm motility; viability test; HOS Test;

    Sammanfattning : The increasing number of patients undergoing treatment with assisted reproductive techniques (ART) during the past years have led to the need of developing different methods for separation of spermatozoa that can be used for different fertilisation procedures and for freezing. Cryopreservation of spermatozoa includes preparation, freezing, storage and thawing. LÄS MER

  4. 3. Deep freezing of concentrated boar semen for intra-uterine insemination

    L3-uppsats, SLU/Dept. of Clinical Sciences

    Författare :Fernando Saravia Ramos; [2004]
    Nyckelord :spermatozoa; high sperm count artificial insemination AI doses; computer-assisted sperm analysis CASA ; flow cytometry; sHOST; boars;

    Sammanfattning : Frozen-thawed (FT) boar semen for artificial insemination (AI) in commercial pig production is still only used in exceptional cases, mostly for incorporation of top genetics. Low sperm survival after a freezing procedure that is still considered suboptimal, which results in low farrowing rates and small litter sizes when conventional cervical AI is performed, are among the reasons why FT boar semen is rarely used in AI. LÄS MER