We elucidate the role that dissipation in a bosonic channel plays prevalence and stability of time crystals (TCs) periodically driven spin-boson system described by Dicke model. Here, bosons are represented photons, they mediate infinite-range interactions between spin systems. For strong dissipation, we study dynamics using an effective atom-only description closed Lipkin-Meshkov-Glick By mapp...

OBJECTIVES The "closed" in situ bypass results in a reduction of wound complications compared to the "open" technique. This advantage is partly diminished by extra costs for the "closed" procedure and a larger percentage of residual arteriovenous (AV)-fistulae. This aim of this study was to analyse costs related to "closed" and "open" procedures. METHODS The cost affecting parameters: (1) dur...

let $s$ be a monoid. in this paper, we prove every class of $s$-acts having a flatness property is closed underdirected colimits, it extends some known results. furthermore thisresult implies that every $s$-act has a flatness cover if and only if it has a flatness precover.

Isolated scaphoid dislocations are extremely rare injuries and are commonly associated with significant ligamentousdisruptions. A dorsiflexion-supination force upon the hand is considered as the most common mechanism of injury.Different treatment options have been proposed for the management of this uncommon entity, ranging from conservativetreatment with closed reduction and casting to a wide ...

background humerus supracondyllar fracture is one of the most common elbow injuries. choice of treatment depends on grading of the displacement. closed reduction and pinning is the preferred method of treatment. open reduction is indicated when we encounter neurovascular injury after closed reduction. one of the most important factors in the outcome of surgery is an appropriate approach that wo...

Background: Nowadays combined high tibial osteotomy and ACL reconstruction is accepted as a safe and effectivesurgery for patients with symptomatic varus osteoarthritis and anterior knee instability; however, the source of varusdeformity is sometimes the femoral bone. No studies have reported concomitant ACL reconstruction and distal femoralosteotomy in ACL-deficient knees wit...