Search results for "BChO"
showing 4 items of 4 documents
Starptautisko ķīmijas olimpiādžu uzdevumu elektronisko risināšanas iespēju izpēte
2016
Starptautisko ķīmijas olimpiāžu uzdevumu elektronisko risināšanas iespēju izpēte. Veldre K., darba vadītājs doc. Dr. ķīm. Jāzeps Logins. Bakalaura darbs, 52 lappuses, 24 attēli, 4 tabulas, 22 literatūras avoti. Latviešu valodā. Darba literatūras apskatā īsi aprakstīta starptautisko ķīmijas olimpiāžu vēsture, un olimpiādes noteikumi, sniegts ieskats par mācību priekšmetu olimpiāžu lomu skolēna personības attīstībā un analizētas vairākas e-vides uzdevumu risināšanai. Darba praktiskajā daļā veikta novada olimpiādes treniņuzdevumu, atlases kontroldarba uz Baltijas valstu ķīmijas olimpiādi un 2015. gada starptautiskās ķīmijas olimpiādes uzdevumu pārvēršana elektroniskajā formā. Dažādos aspektos …
Association between radiography-based subchondral bone structure and MRI-based cartilage composition in postmenopausal women with mild osteoarthritis
2016
Summary Objective Our aim was to investigate the relation between radiograph-based subchondral bone structure and cartilage composition assessed with delayed gadolinium enhanced magnetic resonance imaging of cartilage (dGEMRIC) and T 2 relaxation time. Design Ninety-three postmenopausal women (Kellgren–Lawrence grade 0: n = 13, 1: n = 26, 2: n = 54) were included. Radiograph-based bone structure was assessed using entropy of the Laplacian-based image ( E Lap ) and local binary patterns ( E LBP ), homogeneity indices of the local angles (HI Angles,mean , HI Angles,Perp , HI Angles,Paral ), and horizontal (FD Hor ) and vertical fractal dimensions (FD Ver ). Mean dGEMRIC index and T 2 relax…
Implantation of a polycaprolactone scaffold with subchondral bone anchoring ameliorates nodules formation and other tissue alterations
2015
Purpose: Articular cartilage has limited repair capacity. Two different implant devices for articular cartilage regeneration were tested in vivo in a sheep model to evaluate the effect of subchondral bone anchoring for tissue repair. Methods: The implants were placed with press-fit technique in a cartilage defect after microfracture surgery in the femoral condyle of the knee joint of the sheep and histologic and mechanical evaluation was done 4.5 months later. The first group consisted of a biodegradable polycaprolactone (PCL) scaffold with double porosity. The second test group consisted of a PCL scaffold attached to a poly(L-lactic acid) (PLLA) pin anchored to the subchondral bone. Result…