Search for dissertations about: "polyphosphates"

Found 5 swedish dissertations containing the word polyphosphates.

2. 1. Superabsorbent Polymers from the Cell Wall of Zygomycetes Fungi

   Author : Akram Zamani; Högskolan i Borås; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; chitosan; cell wall; chitin; polyphosphates; dilute sulfuric acid; zygomycetes fungi;

   Abstract : The present thesis presents new renewable, antimicrobial and biodegradable superabsorbent polymers (SAPs), produced from the cell wall of zygomycetes fungi. The cell wall was characterized and chitosan, being one of the most important ingredients, was extracted, purified, and converted to SAP for use in disposable personal care products designed for absorption of different body fluids. READ MORE

4. 2. Stimulation of insulin secretion independently from changes in cytosolic free Ca²+-concentration : studies with imidazolines and inositol polyphosphates

   Author : Alexander Efanov; Karolinska Institutet; Karolinska Institutet; []
   Keywords : insulin secretion; pancreatic ß-cell; imidazolines; inositol polyphosphates;

   Abstract : Insulin secretion from the islets of Langerhans is regulated by changes in glucose concentration. Glucose stimulates secretion by two mechanisms. First, it increases cytosolic free Ca2+ concentration ([Ca2+]i) by inhibition of ATP-dependent K+-channels (KATP) and induction of membrane depolarization. READ MORE

5. 3. Intracellular signaling of phosphorylated insitol compounds : a study in pancreatic beta-cells and hippocampal neurons

   Author : Jia Yu; Karolinska Institutet; Karolinska Institutet; []
   Keywords : InsP6; L-type Ca 2 channel; hippocampal neuron; Ins 1; 4; 5 P3; Ca2 ; cyt-MIPP; pancreatic beta-cell; PtdIns 3; 4; 5 P3; Ptdlns 3; 5 P2.;

   Abstract : The family of phosphorylated inositol compounds consists of soluble cytosolic inositol phosphates and insoluble inositol phospholipids, localized in cellular membranes and the nuclear matrix. Although inositol phospholipids only account for 5-10% of total plasma membrane lipids, these compounds and their inositol phosphate derivatives play an important role in a broad range of cellular processes including intracellular Ca 2+ signalling, ion channel regulation, vesicle trafficking, both exo- and endocytosis, cell growth and apoptosis. READ MORE

6. 4. Studies on nucleic acids chemistry

   Author : Nitin Puri; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Bioorganic chemistry; Bioorganisk kemi; Bioorganic chemistry; Bioorganisk kemi; bioorganisk kemi; Biorganic Chemistry;

   Abstract : This thesis is divided into three parts: Part 1: Synthesis and conformational analysis of cyclic RNAs, and comparison with lariat RNAs modelling the lariat formed during processing of Group II and Nuclear pre-mRNA. Synthesis of a hexameric lariat RNA model with a tetranucleotidyl "2' → 5' loop" and a dinucleotidyl "3'-tail" has been accomplished. READ MORE

7. 5. Neutrophil-induced endothelial barrier dysfunction in acute inflammation : mechanisms and therapeutic strategies

   Author : Joel Rasmuson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : The acute inflammatory response is characterized by recruitment of leukocytes and increased vascular permeability, resulting in the cardinal signs of inflammation; redness, heat, swelling, pain and loss of function. Permeability changes of the vascular wall are important in functional immune responses and host defense. READ MORE