Ethene Dimerization on Zeolite-Hosted Ni Ions: Reversible Mobilization of the Active Site.

The active site in ethene oligomerization catalyzed by Ni-zeolites is proposed to be a mobile Ni(II) complex, based on density functional theory-based molecular dynamics (DFT-MD) simulations corroborated by continuous-flow experiments on Ni-SSZ-24 zeolite. The results of the simulations at operating conditions show that ethene molecules reversibly mobilize the active site as they exchange with the zeolite as ligands on Ni during reaction. Microkinetic modeling was conducted on the basis of free-energy profiles derived with DFT-MD for oligomerization on these mobile [(ethene)-Ni-alkyl] species.

Effect of Ankaferd Blood Stopper on muscle healing.

Purpose: Ankaferd Blood Stopper (ABS), which is a standardized mixture of herbal extracts obtained from five plants, has been proven as an efficient hemostatic agent and is still used in emergency situations. It is not known exactly if decreased bleeding has positive or negative effects on muscle healing and fibrosis, so the purpose of this study was to test the effect of ABS on muscle healing and morphology.

Methods: A total of 66 outbred Wistar rats were divided into three control and three experimental subgroups.

Impairments of postural stability, core endurance, fall index and functional mobility skills in patients with patello femoral pain syndrome.

Background: Postural control allows performance of daily and sports activities. The previous studies show that postural sway inceases in orthopaedic injuries such as osteoarthritis and total knee arthroplasty.

Objective: To compare postural sway, risk of falling and function between individuals with and without patellofemoral pain syndrome (PFS).

An alternative treatment method for defective pseudoarthrosis; evaluation of eight patients treated with Artelon+Kryptonite.

Pseudoarthrosis with bone loss is one of the most challenging orthopaedic problems for surgeons. Bone loss usually leads to technical difficulties during surgery due to instability in the fracture area. Eight patients with pseudoarthrosis of different long bones were operated on by the same surgeon.

The efficacy of semirigid hip orthosis in the delayed treatment of developmental dysplasia of the hip.

Unlabelled: This study assessed the use of semirigid hip orthosis to stabilize the femoral head into the acetabulum in the delayed treatment of developmental dysplasia of the hip (DDH; Graf type IIb or more severe) under the age of 6 months. Ninety-eight hips from 75 patients (four boys, 71 girls) were evaluated retrospectively. The mean age at treatment initiation was 3.