Event shape engineering with ALICE

The strong fluctuations in the initial energy density of heavy-ion collisions allow an efficient selection of events corresponding to a specific initial geometry. For such "shape engineered events", the elliptic flow coefficient, $v_2$, of unidentified charged particles, pions and (anti-)protons in Pb-Pb collisions at \snn = 2.76 TeV is measured by the ALICE collaboration. $v_2$ obtained with the event plane method at mid-rapidity, $|\eta|<0.8$, is reported for different collision centralities as a function of transverse momentum, \pt, out to \pt=20 GeV/$c$. The measured $v_2$ for the shape engineered events is significantly larger or smaller than the average which demonstrates the ability to experimentally select events with the desired shape of the initial spatial asymmetry.Comment: 4 pages, 4 figures, Proceedings for Quark Matter 2012, Washington D.C., August 13-18, 201

Elliptic flow at high transverse momentum in Pb-Pb collisions at sNN=2.76\sqrt{s_{NN}} = 2.76 TeV with the ALICE experiment

An observable that can be used to better constrain the mechanism responsible for the parton energy loss is the elliptic azimuthal event anisotropy, $v_2$. We report on measurements of $v_2$ for inclusive and identified charged particles in Pb-Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV recorded by the ALICE experiment at the LHC. $v_2$ is presented for a wide range of particle transverse momentum up to $p_T=20$ GeV/c. The particle $v_2$ is finite, positive and approximately constant for $p_T>8$ GeV/c. The proton $v_2$ is higher than that of the pion up to about $p_T=8$ GeV/c. The results are compared to the measurements at lower energy reported by RHIC experiments.Comment: 4 pages, QM 2011 proceeding

Erratum: Flt3L dependence helps define an uncharacterized subset of murine cutaneous dendritic cells

[No abstract available

Dural arteriovenous fistula: Two cases presentation

Dural arteriovenous fistula (DAVF) are abnormal shunts between dural arteries and veins or venous sinuses of the dura mater. Also the connections may be between pachymeningeal arteries from cortical arteries and veins or sinus from dura mater. There are uncommon pathologic entities, 6-8 % from supratentorial vascular malformations, and about 20-30% of infratentorial vascular pathology (8). The incidence may be higher because only 10% are symptomatic. The clinical manifestations are very variable from simple cephalea to major intracranial hemorrhagic ictus. The presentation is usually in the adult period,but are citied cases in childhood. In our country the diagnostic was difficult before the digital substraction angiography ( DSA) and the endovascular treatment was started in 2004 in our Department under coordination of professor Patrick Courtheoux from Caen, France

Flt3L dependence helps define an uncharacterized subset of murine cutaneous dendritic cells

Skin-derived dendritic cells (DCs) are potent antigen-presenting cells with critical roles in both adaptive immunity and tolerance to self. Skin DCs carry antigens and constitutively migrate to the skin-draining lymph nodes (LNs). In mice, Langerin-CD11b- dermal DCs are a low-frequency, heterogeneous, migratory DC subset that traffics to LNs (Langerin-CD11b- migDCs). Here, we build on the observation that Langerin-CD11b- migDCs are Fms-like tyrosine kinase 3 ligand (Flt3L) dependent and strongly Flt3L responsive, which may relate them to classical DCs. Examination of DC capture of FITC from painted skin, DC isolation from skin explant culture, and from the skin of CCR7 knockout mice, which accumulate migDCs, demonstrate these cells are cutaneous residents. Langerin-CD11b- Flt3L-responsive DCs are largely CD24(+) and CX 3 CR1 low and can be depleted from Zbtb46-DTR mice, suggesting classical DC lineage. Langerin-CD11b- migDCs present antigen with equal efficiency to other DC subsets ex vivo, including classical CD8α cDCs and Langerin+CD103+ dermal DCs. Finally, transcriptome analysis suggests a close relationship with other skin DCs, and a lineage relationship with other classical DCs. This work demonstrates that Langerin- CD11b- dermal DCs, a previously overlooked cell subset, may be an important contributor to the cutaneous immune environment

Mechanical thrombectomy techniques for acute ischemic stroke

Mechanical thrombectomy technique was introduced as an effective and secure method in acute ischemic stroke patients suffering from intracranial large vessel occlusion (LVO). In this article, we will review the main mechanical thrombectomy techniques and current trends in this type of treatment for acute ischemic stroke

The association between cholesterol levels and brachial/aortic augmentation index versus cognitive status in patients with cardiovascular risk factors

Cardiovascular pathology appears to have a major impact in cognitive decline, and early identification and correction of cardiovascular morbidity could have a major protective impact on cognitive functioning. However, it is not clear how the risk factors for vascular disease can also be risk factors for a general cognitive decline. Regarding cholesterol, its implications in cognitive decline are not very well understood, considering that a high level of cholesterol has been associated with both an increased and decreased risk of dementia. In the present context, we decided to study correlations between cholesterol concentration and the various subdomains of some main psychometric tests, such as MMSE (Mini-Mental State Examination) and MoCA (The Montreal Cognitive Assessment), as well as some measurements for systemic arterial stiffness (brachial and aortic augmentation index) and how they correlate with the aforementioned psychometric parameters. Our results provide additional evidence for a correlation between cholesterol levels and cognitive subdomains (with special focus on orientation, attention, recent memory and long-term memory). Additionally, a significant correlation was found between the brachial and aortic augmentation index and the results of both MMSE and MOCA tests

Phase Transition in a Self-repairing Random Network

We consider a network, bonds of which are being sequentially removed; that is done at random, but conditioned on the system remaining connected (Self-Repairing Bond Percolation SRBP). This model is the simplest representative of a class of random systems for which forming of isolated clusters is forbidden. It qualitatively describes the process of fabrication of artificial porous materials and degradation of strained polymers. We find a phase transition at a finite concentration of bonds $p=p_c$, at which the backbone of the system vanishes; for all $p<p_c$ the network is a dense fractal.Comment: 4 pages, 4 figure

itanium mesh cranioplasty for patients with large cranial defects: Technical notes

We propose to describe some personal points of view concerning the repair of large cranial defects using titanium mesh, and in this sense we present few cases. Also we expose the presurgical planning by 3D imaging acquisition with the radiologic digital system which allow a computer aided design for a precise measurement of the shape and the curvature of cranial defect