Sökning: "Muhammad Waqas"

Hittade 5 avhandlingar innehållade orden Muhammad Waqas.

  1. 1. Assessment of human swallowing using in-vivo and in-vitro approaches

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Muhammad Waqas; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; in-vitro manometery; dysphagia; In-vivo analysis; microstructure analysis; Ultrasound viscometry; In-vitro simulations; Bolus Rheology; extensional rheology;

    Sammanfattning : Texture modification is the most vital strategy to manage dysphagia: a condition in which food and beverages are difficult to swallow. Typically thickeners in the form of starch or gums are added to the food to increase the viscosity and thereby reduce the speed of bolus flow. LÄS MER

  2. 2. Exploring the role of rheology in bolus flow using an in-vitro approach

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Muhammad Waqas; [2019]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; extensional rheology; ultrasound viscometery; Bolus rheology; in vivo analysis; in vitro manometry; In-vitro simulations; degluitition; microstructure analysis; thickened fluids; Dysphagia;

    Sammanfattning : Swallowing disorders, termed ‘dysphagia’, are more common in the elderly but can also affect younger persons. Approximately, 8% of the world’s population suffers from dysphagia. A Texture Modified Diet (TMD), which increases bolus viscosity to adjust for the sluggish bolus handling mechanism, is the most common intervention. LÄS MER

  3. 3. In Vivo Active Drug Uptake and Efflux at the Blood-Brain Barrier With Focus on Drug Transport Interactions

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Muhammad Waqas Sadiq; Uppsala universitet.; [2012]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Blood-brain barrier; Active uptake transport; Microdialysis; P-glycoprotein; Drug interactions; Species differences; Pharmacokinetics; Pharmacodynamics; NONMEM; Pharmaceutical Science; Farmaceutisk vetenskap;

    Sammanfattning : The blood-brain barrier (BBB) controls the movement of substances into and out of the brain. The tight junctions between endothelial cells and energy dependent transporters in the BBB influence rate and extent of drug distribution to the brain. LÄS MER

  4. 4. Initiation and early crack growth in VHCF of stainless steels Experimental and theoretical analysis

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Muhammad Waqas Tofique; Karlstads universitet.; [2016]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Very High Cycle Fatigue; Stainless steel; Ultrasonic fatigue testing; Crack initiation; Crystallographic crack growth; Distributed Dislocation Dipole Technique; Closed cracks; Materialteknik; Materials Engineering;

    Sammanfattning : Mechanical fatigue is a failure phenomenon that occurs due to repeated application of mechanical loads. Very High Cycle Fatigue (VHCF) is considered as the domain of fatigue life greater than 10 million load cycles. LÄS MER

  5. 5. Very high cycle fatigue of duplex stainless steels and stress intensity calculations

    Detta är en avhandling från Karlstad : Karlstads universitet

    Författare :Muhammad Waqas Tofique; Karlstads universitet.; [2014]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Very high cycle fatigue; duplex stainless steel; ultrasonic fatigue testing; distributed dislocation dipole technique; Materialteknik; Materials Engineering;

    Sammanfattning : Very high cycle fatigue (VHCF) is generally considered as the domain of fatigue lifetime beyond 10 million (107) load cycles. Few examples of structural components which are subjected to 107-109 load cycles during their service life are engine parts, turbine disks, railway axles and load-carrying parts of automobiles. LÄS MER