The pinning of superconducting vortices in typeII superconductors has been studied for a long time due to the wide variety of unusual flux flow phenomena and more importantly, for its relevance in applications, since vortex pinning is one of the essential parameters controlling the enhancement of critical currents. A case of particular interest is the use of artificial magnetic pinning centers,...

Although pinning of domain walls in ferromagnets is ubiquitous, the absence of an appropriate characterization tool has limited the ability to correlate the physical and magnetic microstructures of ferromagnetic films with specific pinning mechanisms. Here, we show that the pinning of a magnetic vortex, the simplest possible domain structure in soft ferromagnets, is strongly correlated with sur...

Background: Supracondylar humerus (SCH) fracture is a common injury to the pediatric age group and often requires closed reduction percutaneous pinning. Much controversy exists in literature regarding use of antibiotics pre-operative or postoperative period with some centers administrating single dose only, whereas other administering along few post-operative doses where no antibiotic administr...

conclusions supracondylar fracture is the most common fracture type resulting from 4 - 8 year old boys’ falls. our findings indicate the critical nature of appropriate treatment in order to prevent severe complications. objectives the aim of this study was to evaluate the epidemiology of elbow fracture in children admitted in alzahra hospital, isfahan, ir iran over a one year period. patients a...

As is well-known [1], the technological usage of any superconducting materials is based on their ability to carry (without loss) significant critical currents in strong enough applied magnetic fields. This ability is directly related to pinning efficiency of a given material which in turn is determined by its crystallographic structure and the presence of different kinds of defects (both inhere...

We study the phase behavior of two-dimensional paramagnetic colloidal systems on square pinning arrays, the latter being created by a holographic optical tweezer technique. When the particle interaction strength is decreased, a transition from an incommensurate to a commensurate solid is observed. At even smaller pair potentials, the interstitial particles start to melt, whereas the particles a...

We develop a dynamical model for phase separation in a system with two disparate energy scales. Monte Carlo computer simulations of this model reveal a "pinning" of the structure factor during spinodal decomposition that obeys new scaling relations. We propose a mechanism for the pinning which allows us to predict exact values for the pinning exponents. Finally, we discuss our model in light of...

The magnetic properties and nanostructure of polycrystalline MgCNi3, prepared from a batch with overall composition MgC1.5Ni3, were studied by vibrating sample magnetometry and electron microscopy. Very high critical current density, e.g., 1.8 MA/cm at 1 T and 4.2 K, is deduced from the magnetic hysteresis and evident subdivision of the sample into 10 mm clusters of MgCNi3 grains by excess grap...

Case Description- A two-year-old non-ambulatory intact male Pekingese breed dog was referred to private clinic.   Clinical Findings- The clinical examination revealed non-weight bearing of hindlimbs, back pain and constipation, urinary continence with normal appetite. Treatment and Outcome-  Reduction and  stabilization  were performed by transilial pinning. Defecation and urination became ...

Background: Distal radius fractures constitute 17% of all fractures and 75% of forearm fractures in adults. Due to the vital role of the hands in a wide range of daily tasks, quick recovery and fewer complications for the patients are important. The purpose of this study was to compare the two common treatments of distal radius fractures namely, percutaneous pinning and pin-in-plaster. Methods...