Correction: Haj-Khlifa, S., et al. Polyol Process Coupled to Cold Plasma as a New and Efficient Nanohydride Processing Method: Nano-NiH as a Case Study. 2020, , 136.

The authors wish to make the following corrections to this paper [1]: there are two mistakes inthis article [1] [...

Polyol Process Coupled to Cold Plasma as a New and Efficient Nanohydride Processing Method: Nano-NiH as a Case Study.

An alternative route for metal hydrogenation has been investigated: cold plasma hydrogen implantation on polyol-made transition metal nanoparticles. This treatment applied to a challenging system, Ni-H, induces a re-ordering of the metal lattice, and superstructure lines have been observed by both Bragg-Brentano and grazing incidence X-ray diffraction. The resulting intermetallic structure is similar to those obtained by very high-pressure hydrogenation of nickel and prompt us to suggest that plasma-based hydrogen implantation in nanometals is likely to generate unusual metal hydride, opening new opportunities in chemisorption hydrogen storage.

Magnetic entropy table-like shape and enhancement of refrigerant capacity in LaCaMnO-LaEuCaMnO composite.

In this work, we have investigated the structural, magnetic and magnetocaloric properties of LaCaMnO (A) and LaEuCaMnO (B) oxides. These compounds are synthesized by a solid-state reaction route and indexed with respect to SrTiO-type perovskite with the 4/ space group. The substitution of La by 10% Eu enhances the value of magnetization and reduces the Curie temperature ( ).

Influence of Defects on the Stability and Hydrogen-Sorption Behavior of Mg-Based Hydrides.

This review deals with the destabilization methods for improvement of storage properties of metal hydrides. Both theoretical and experimental approaches were used to point out the influence of various types of defects on structure and stability of hydrides. As a case study, Mg, and Ni based hydrides has been investigated.

Microstructure Optimization of Mg-Alloys by the ECAP Process Including Numerical Simulation, SPD Treatments, Characterization, and Hydrogen Sorption Properties.

Both numerical simulation and hardness measurements were used to determine the mechanical and microstructural behavior of AZ31 bulk samples when submitted to the Equal Channel Angular Pressing (ECAP) technique. Billets of this representative of Mg-rich alloys were submitted to different numbers of passes for various ECAP modes (anisotropic A, isotropic B). The strain distribution, the grain size refinement, and the micro-hardness were used as indicators to quantify the effectiveness of the different processing routes.

Effect of statins on survival in patients undergoing dialysis access for end-stage renal disease.

The benefit of statin therapy in patients with advanced chronic kidney disease remains uncertain. Randomized trials have questioned the efficacy of the drug in improving outcomes for on-dialysis populations, and many patients with end-stage renal disease are not currently taking statins. This study aimed to investigate the impact of statin use on survival of patients with vascular access performed at a vascular center for chronic dialysis.

Safety of Carotid Revascularization during the Acute Period of Neurological Symptom Onset in Women.

Background: Benefit from carotid revascularization is supposed to be lower in women due to increased periprocedural risks. The aim of this study was to investigate the risk of stroke/death after carotid intervention in women treated within 15 days from last neurological event.

Methods: Data from 282 consecutive patients treated during 2009-2015 by carotid endarterectomy or carotid stenting within 15 days from neurological symptoms were analyzed by sex and stratified according to treatment delay toward symptoms onset.

Mortality Risk for Ruptured Abdominal Aortic Aneurysm in Women.

Background: Sex differences in presentation and outcomes of abdominal aortic aneurysms (AAA) with increased mortality rates in women are suggested. This study aimed to assess mortality risk after repair of ruptured AAA (rAAA) in women in the endovascular abdominal aortic repair (EVAR) era.

Methods: Patients treated between 2006 and 2015 for rAAA were included in a prospective database.

Bilateral Staged Computed Tomography-Guided Gluteal Artery Puncture for Internal Iliac Embolization in a Patient with Type II Endoleak.

Repair of isolated iliac aneurysm with stent-graft implantation and internal iliac coverage may induce significant type II endoleak from patent internal iliac refilling leading to ongoing aneurysm growth. Subsequent treatment of such complication can be challenging especially in case of bilateral iliac involvement. Open repair is technically demanding and often a high risk procedure, while embolization via transfemoral approach is unviable due to the stent-graft coverage precluding direct antegrade access between the common and the internal iliac lumen.

Impact of age and urgency on survival after thoracic endovascular aortic repair.

Objective: Elderly patients are often turned down from receiving treatment for descending thoracic aortic diseases (DTADs) because of the uncertain benefits, especially in acute settings. This study investigated the impact of old age and timing of thoracic endovascular aortic repair (TEVAR) on outcomes of DTAD in patients older than 75 years of age.

Methods: Patients from a prospective TEVAR database were dichotomized by age (75 and 80 years of age).

Arbitrary Palliation of Ruptured Abdominal Aortic Aneurysms in the Elderly is no Longer Warranted.

Objective/background: A consistent number of elderly patients with ruptured abdominal aortic aneurysms (rAAAs) are deemed unfit for repair and excluded from any treatment. The objective of this study was to examine the impact on survival of endovascular repair and open surgery with restricted turndown in acute AAA repair.

Methods: A prospective database for patients treated for rAAA was established.

The Concept of Risk Assessment and Being Unfit for Surgery.

The concept of risk assessment and the identification of surgical unfitness for vascular intervention is a particularly controversial issue today as the minimally invasive surgical population has increased not only in volume but also in complexity (comorbidity profile) and age, requiring an improved pre-operative selection and definition of high risk. A practical step by step (three steps, two points for each) approach for surgical risk assessment is suggested in this review. As a general rule, the identification of a "high risk" patient for vascular surgery follows a step by step process where the risk is clearly defined, quantified (when too "high"?), and thereby stratified based on the procedure, the patient, and the hospital, with the aid of predictive risk scores.

Safety of Carotid Revascularization in Symptomatic Patients with less than 70 Years.

Background: Age is a main risk factor for stroke and perioperative risk. This study aims to analyze the effect of age by symptomatic status in young patients receiving carotid revascularization.

Methods: Consecutive carotid revascularization procedures performed during the period 2001-2009 were reviewed.

A propensity-matched comparison for endovascular and open repair of thoracoabdominal aortic aneurysms.

Objective: The aim of this study was to investigate outcomes of patients treated with endovascular repair (ER) with the use of fenestrated and branched stent grafts or open surgery (OS) for thoracoabdominal aortic aneurysm (TAAA) in a current series of patients.

Methods: All TAAA patients undergoing repair at three centers between January 2007 and December 2014 were included in a prospective database. Patients were stratified according to treatment by ER or OS, and outcomes were compared using propensity score matching (1:1).

Summary of Evidence on Early Carotid Intervention for Recently Symptomatic Stenosis Based on Meta-Analysis of Current Risks.

Background And Purpose: This study aimed to assess the evidence on the periprocedural (<30 days) risks of carotid intervention in relation to timing of procedure in patients with recently symptomatic carotid stenosis.

Methods: A systematic literature review of studies published in the past 8 years reporting periprocedural stroke/death after carotid endarterectomy (CEA) and carotid stenting (CAS) related to the time between qualifying neurological symptoms and intervention was performed. Pooled estimates of periprocedural risk for patients treated within 0 to 48 hours, 0 to 7 days, and 0 to 15 days were derived with proportional meta-analyses and reported separately for patients with stroke and transient ischemic attack as index events.

Results of aberrant right subclavian artery aneurysm repair.

Objective: The objective of this multicenter registry was to review current treatments and late results of repair of aneurysm of aberrant right subclavian artery (AARSA).

Methods: All consecutive AARSA repairs from 2006 to 2013 in seven centers were reviewed. End points were 30-day and late mortality, reintervention rate, and AARSA-related death.

Contemporary comparison of aortic arch repair by endovascular and open surgical reconstructions.

Objective: This study analyzed total aortic arch reconstruction in a contemporary comparison of current open and endovascular repair.

Methods: Endovascular (group 1) and open arch procedures (group 2) performed during 2007 to 2013 were entered in a prospective database and retrospectively analyzed. Endovascular repair (proximal landing zones 0-1), with or without a hybrid adjunct, was selected for patients with a high comorbidity profile and fit anatomy.