Little is known about the learners who download iTunes U resources but do not belong to the Higher Education institutions that provide them. This paper presents the first full profile of the external iTunes U learner and their practices and opinions of the materials they download. The data was gathered through a large survey (over 2000 responses) carried out over two years using the iTunes U si...

Traumatic dislocations of the shoulder commonly present to emergency departments (EDs). Immediate closed reduction of both anterior and posterior glenohumeral dislocations is recommended and is frequently performed in the ED. Recurrence of dislocation is common, as anteroinferior labral tears (Bankart lesions) are present in many anterior shoulder dislocations.14,15,18,23 Immobilization of the ...

background: high level radiation areas have been recognized on various parts of the earth. mahallat hot spring region is one of these areas. study of exposure in these areas can be helpful in investigating the effects of ionizing radiation. internal and external exposure to the staff was studied. materials and methods: used materials and instruments include: rss-112 ionizing chamber for environ...

Magnetic nanoand microparticles have already found many important applications in various areas of biosciences, medicine, biotechnology, environmental technology etc. These smart materials exhibit different types of response to external magnetic field. In most cases they can be described as composite materials, where the magnetic properties are caused by the presence of iron oxides nanoor micro...

Responsive polymer materials can adapt to surrounding environments, regulate transport of ions and molecules, change wettability and adhesion of different species on external stimuli, or convert chemical and biochemical signals into optical, electrical, thermal and mechanical signals, and vice versa. These materials are playing an increasingly important part in a diverse range of applications, ...

Hemorrhage control is vital for clinical outcome after surgical treatment and prehospital trauma injuries. Numerous biomaterials have been investigated to control surgical and traumatic bleeding. A comprehensive review has been conducted in the area focused on the topical biomaterials for severe bleeding in prehospital settings. Solid biopolymers and ceramics are most promising materials for le...

Introduction: The survival of an implant system is affected by the choice of antirotational design, which can include an external or internal hex. Implant success also is affected by the maintenance of the crestal bone around implants. The aim of present study was to evaluate the crestal bone loss and clinical parameters related to bone loss in patients loaded with an external or internal hex 3...

An improved means for the attachment of an external prosthesis to an amputated extremity is most desirous today as it was when this project was begun and conceived in 1952. The basic work for this project was delayed by military service until 1956. I t was made possible through a grant from the Orthopaedic Research and Education Foundation and a grant from the Veterans Administration (Research ...