Sökning: "nål"

Visar resultat 1 - 5 av 14 avhandlingar innehållade ordet nål.

  1. 1. Purification, Stereoisomeric Analysis and Quantification of Biologically Active Compounds in Extracts from Pine Sawflies, African Butterflies and Orchid Bees

    Författare :Joakim Bång; Erik Hedenström; Kristina Sjödin; Hans-Erik Högberg; Anna-Karin Borg-Karlsson; Mittuniversitetet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Semiochemicals; sex pheromone; pine sawflies; Bicyclus; Euglossa; chiral separation; derivatisation; GC-­MS; Organic chemistry; Organisk kemi;

    Sammanfattning : Stereochemistry plays an important role in nature because biologically important molecules such as amino acids, nucleotides and sugars, only exist in enantiomerically pure forms. Semiochemicals carry messages, between the same species (pheromones) and between different species (allelochemicals). LÄS MER

  3. 2. Overcoming the Barriers of Fine-Needle Aspiration

    Författare :Filipe Marques; Niclas Roxhed; Heikki J. Nieminen; KTH; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cysts; Cystic fluid; Pancreatic Cancer; Fine-needle Aspiration; Early diagnosis; Surgical instruments; Nitinol; Absorbable sutures; Loop brush; Cythopathology; Rapid on-site evaluation; Microfluidics; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Cysts, closed sac-like structures filled with fluid or air, can form anywhere in the body. In the majority of cases, cysts are benign (not cancerous). However, these structures can also be precursors of cancer, pointing to the location where cancer can originate. LÄS MER

  4. 3. Evaluation of MRI as a diagnostic method in biliary tract conditions

    Författare :Katarina Håkansson; Avdelningen för klinisk kemi och farmakologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Klinisk fysiologi; radiologi; tomografi; medicinsk instrumentering; medical instrumentation; tomography; radiology; Clinical physics; T2; T1; Relaxation rate; Gallbladder bile; Acute cholangitis; Biliary duct injury; Biliary duct disease; Cholecystectomy; Bile duct; Acute cholecystitis; ERCP; Ultrasound; MRI; MRCP;

    Sammanfattning : The diagnostic value of modern fast pulse sequences and breath-hold technique was evaluated in a prospective study of patients with suspected biliary diseases. The cost-effectiveness of MRI compared to ultrasound was calculated. LÄS MER

  5. 4. Clinical aspects on central venous cannulation

    Författare :Andreas Pikwer; Anestesiologi och intensivvård; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Central venous catheters are mainly being used for reliable infusion of fluids and potentially irritant drugs, for haemodialysis, and for assessment of right atrial or central venous pressure (RAP/CVP). Current guidelines state that central venous catheterization should be followed-up by immediate anterior-posterior chest X-ray to confirm appropriate positioning and to detect iatrogenic pneumothorax. LÄS MER

  7. 5. Intra-Aneurysm Sac Pressure and Clinical Results after Endovascular Repair of Abdominal Aortic Aneurysms

    Författare :Nuno Dias; Vaskulära sjukdomar - kliniska studier; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Diagnostics; Diagnostik; Open Repair; EVAR; Endovascular Aneurysm Repair; Pressure; Abdominal Aortic Aneurysm;

    Sammanfattning : AIM: The aim was to evaluate the results of endovascular aneurysm repair (EVAR) of abdominal aortic aneurysms (AAA) in terms of intra-AAA pressure and clinical outcomes. METHODS AND RESULTS: 0.014-inch guide-wire-mounted tip-pressure sensors were used for direct intra-aneurysm sac pressure measurement (DISP) through translumbar puncture of the AAA. LÄS MER