The ATLAS inner detector trigger performance in pp collisions at 13 TeV during LHC Run 2

The design and performance of the inner detector trigger for the high level trigger of the ATLAS experiment at the Large Hadron Collider during the 2016-18 data taking period is discussed. In 2016, 2017, and 2018 the ATLAS detector recorded 35.6 fb$^{-1}$, 46.9 fb$^{-1}$, and 60.6 fb$^{-1}$ respectively of proton-proton collision data at a centre-of-mass energy of 13 TeV. In order to deal with the very high interaction multiplicities per bunch crossing expected with the 13 TeV collisions the inner detector trigger was redesigned during the long shutdown of the Large Hadron Collider from 2013 until 2015. An overview of these developments is provided and the performance of the tracking in the trigger for the muon, electron, tau and $b$-jet signatures is discussed. The high performance of the inner detector trigger with these extreme interaction multiplicities demonstrates how the inner detector tracking continues to lie at the heart of the trigger performance and is essential in enabling the ATLAS physics programme

The ATLAS inner detector trigger performance in pp collisions at 13 TeV during LHC Run 2

The design and performance of the inner detector trigger for the high level trigger of the ATLAS experiment at the Large Hadron Collider during the 2016-18 data taking period is discussed. In 2016, 2017, and 2018 the ATLAS detector recorded 35.6 fb$^{-1}$, 46.9 fb$^{-1}$, and 60.6 fb$^{-1}$ respectively of proton-proton collision data at a centre-of-mass energy of 13 TeV. In order to deal with the very high interaction multiplicities per bunch crossing expected with the 13 TeV collisions the inner detector trigger was redesigned during the long shutdown of the Large Hadron Collider from 2013 until 2015. An overview of these developments is provided and the performance of the tracking in the trigger for the muon, electron, tau and $b$-jet signatures is discussed. The high performance of the inner detector trigger with these extreme interaction multiplicities demonstrates how the inner detector tracking continues to lie at the heart of the trigger performance and is essential in enabling the ATLAS physics programme

Os histiócitos e as histiocitoses não Langerhans em dermatologia Histiocytes and non-Langerhans cell histiocytoses in dermatology

Atualmente, os histiócitos não são mais compreendidos como células únicas, mas como um grupo heterogêneo de células com o mesmo aspecto histológico, mas com características e funções distintas entre si. Várias doenças proliferativas de histiócitos, conhecidas como histiocitoses, são descritas. Tais doenças são raras, e seu estudo costuma ser difícil. Este artigo objetiva simplificar o entendimento desse grupo de doenças, adequando-o a esse novo paradigma da heterogeneidade dos histiócitos.<br>Histiocytes are no longer recognized as singular cells. The term ‘histiocyte’ now refers to a heterogeneous group of cells with unique histologic morphology, but with singular functions and characteristics. Histiocytoses are a group of different diseases caused by proliferative histiocytes. Such diseases are rare and their study usually tends to be difficult. The objective of this paper is to simplify the study of these diseases under the novel paradigm of histiocyte heterogeneity