Sökning: "microsphere"

Visar resultat 21 - 25 av 28 avhandlingar innehållade ordet microsphere.

  1. 21. Development and Applications of Tracking of Pellet Streams

    Författare :Andrzej Pyszniak; Tord Johansson; Markus Büscher; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PANDA; cryogenic target; pellet; pellet target; pellet tracking; Fysik med inriktning mot kärnfysik; Physics with specialization in Nuclear Physics;

    Sammanfattning : The development of a system for optical tracking of frozen hydrogen microsphere targets (pellets) was done. It is intended for the upcoming hadron physics experiment PANDA at FAIR, Darmstadt, Germany. LÄS MER

  3. 22. Preparation and characterisation of biodegradable microspheres for the delivery of bioactive compounds

    Författare :Cecilia Sturesson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; galenisk farmaci; Pharmaceutics;

    Sammanfattning : The incorporation of bioactive compounds into biodegradable polymer microspheres has several advantages. Firstly, the drug substance is protected from physiological degradation. Secondly, using microspheres from polymers with different degradation mechanisms, it is possible to design different release profiles with desired release rates. LÄS MER

  4. 23. Microcirculation in native and transplanted rodent pancreatic islets with special reference to the influence of diabetes mellitus

    Författare :Per-Ola Carlsson; Uppsala universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cell biology; Diabetes; pancreatic islets; islet microcirculation; microspheres; micropuncture technique; islet blood flow; islet capillary pressure; oxygen tension; transplanted islets; Cellbiologi; Cell biology; Cellbiologi; medicinsk cellbiologi; Medical Cell Biology;

    Sammanfattning : The aim of the present work was to characterize the islet microcirculation in animal models of type 1 and type 2 diabetes, as well as in islets transplanted to diabetic or normoglycemic recipients. For this purpose, a microsphere technique was evaluated and applied for measurements of islet blood flow in mice. LÄS MER

  5. 24. Studies of pancreatic islet microcirculation and insulin secretion in normal and diabetic rats

    Författare :Zhen Huang; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :diabetes; islet; insulin; microcirculation; ethanol; blood flow; hypoglycemia; renin angiotensin system; statins;

    Sammanfattning : Type 2 diabetes is increasing globally. The disease is characterized not only by hyperglycemia, but also by insulin resistance with attendant dyslipidemia, hypertension and endothelial dysfunction. These aberrations may result in macrovascular disease, and deeply impact the longevity and quality of life in diabetic patients. LÄS MER

  7. 25. Endothelin and the regulation of peripheral and uteroplacental vascular tone during pregnancy

    Författare :Gunilla Ajne; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Endothelin; pregnancy; uteroplacental blood flow; peripheral resistance; endothelin receptors;

    Sammanfattning : The mechanism behind the vascular adaptation during pregnancy is poorly understood. The fall in peripheral resistance, particularly in the uterine vasculature, is crucial for sufficient increase in uteroplacental blood flow and thereby for normal fetal growth and development. LÄS MER