Jean–Yves Fournier

ORCID: 0000-0001-8182-210X
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Traffic and Road Safety
  • Safety Warnings and Signage
  • Spine and Intervertebral Disc Pathology
  • Intracranial Aneurysms: Treatment and Complications
  • French Urban and Social Studies
  • Spinal Fractures and Fixation Techniques
  • Traumatic Brain Injury and Neurovascular Disturbances
  • Pituitary Gland Disorders and Treatments
  • Health, Medicine and Society
  • Neurosurgical Procedures and Complications
  • Urban Transport and Accessibility
  • Occupational Health and Safety Research
  • Cerebrospinal fluid and hydrocephalus
  • Human-Automation Interaction and Safety
  • Risk and Safety Analysis
  • Injury Epidemiology and Prevention
  • Cervical and Thoracic Myelopathy
  • Glioma Diagnosis and Treatment
  • Aging, Elder Care, and Social Issues
  • Laser Material Processing Techniques
  • Vascular Malformations Diagnosis and Treatment
  • Musculoskeletal pain and rehabilitation
  • Traffic Prediction and Management Techniques
  • Scoliosis diagnosis and treatment
  • Agriculture and Farm Safety

Hôpital de Sion
1990-2025

Hôpital du Valais
1997-2024

Université Gustave Eiffel
2016-2024

Aix-Marseille Université
2024

University of St. Gallen
2009-2019

Kantonsspital St. Gallen
2000-2018

Centre Hospitalier Universitaire de Tours
2011-2016

University of Liège
2016

Centre Val de Loire
2016

Université de Tours
2011-2016

We study in this paper the different physical processes involved laser-produced plasma confined geometry. With technique, a laser irradiates target at an intensity of few GW/cm2, and produced is by transparent overlay to which covers target. This configuration has appeared necessary for example metallurgical applications where, given energy, enhanced pressures must be realized order achieve high shock pressures. Therefore, method useful optimize technique. have first developed analytical...

10.1063/1.346783 article EN Journal of Applied Physics 1990-07-15

The spectroscopy and the dynamics of ${\mathrm{CO}}^{2+}$ ${\mathrm{CO}}^{3+}$ in 35--150-eV energy range have been studied using various complementary experiments, such as photoionization with synchrotron radiation, ion-ion coincidence technique, ${\mathrm{H}}^{+}$ double-charge-transfer spectroscopy. In addition, ab initio calculations performed order to obtain potential-energy curves electronic states lying between 35 60 eV. lowest-energy state is shown be predissociated. metastable...

10.1103/physreva.40.5673 article EN Physical review. A, General physics 1989-11-01

Background and Purpose— To identify predictors of in-hospital mortality in patients with aneurysmal subarachnoid hemorrhage to estimate their impact. Methods— Retrospective analysis prospective data from a nationwide multicenter registry on all cases admitted tertiary neurosurgical department Switzerland (Swiss SOS [Swiss Study Aneurysmal Subarachnoid Hemorrhage]; 2009–2015). Both clinical radiological independent were identified, effect size was determined by calculating adjusted odds...

10.1161/strokeaha.117.019328 article EN Stroke 2018-01-15

This study evaluated the results of a physeal-sparing technique intra-articular anterior cruciate ligament (ACL) reconstruction in skeletally immature patients, with particular reference to growth disturbance. Between 1992 and 2007, 57 children mean age 12.2 years (6.8 14.5) underwent ACL using same technique. At 5.5 (2 14) after surgery, 56 patients clinical radiological evaluation. that time, 49 (87.5%) had reached bony maturity 53 (95%) achieved A or B according IKDC 2000 classification....

10.1302/0301-620x.93b4.25801 article EN Journal of Bone and Joint Surgery - British Volume 2011-04-01

10.1051/jp4:1991369 article EN Journal de Physique IV (Proceedings) 1991-10-01

OBJECT Blister aneurysms of the supraclinoid part internal carotid artery (ICA) are known for their high morbidity and mortality rates related to treatment, regardless whether treatment is surgical or endovascular. However, this grim prognosis based on results that indiscriminately group all blister together without taking into account heterogeneous appearance these lesions. The goal study was 2-fold: determine different aneurysm morphologies present pitfalls, which would then require...

10.3171/2014.11.jns141004 article EN Journal of neurosurgery 2015-06-10

Sports helmets provide incomplete protection against brain injuries. Here we aim to improve helmet liner efficiency by employing a novel approach that optimizes their properties. By exploiting finite element model simulates head impacts, developed deep learning models predict the peak rotational velocity and acceleration of dummy protected various materials. The exhibited remarkable correlation coefficient 0.99 within testing dataset with mean absolute error 0.8 rad.s−1 0.6 krad.s−2...

10.1038/s44172-025-00370-0 article EN cc-by-nc-nd Communications Engineering 2025-02-16

Doubly ionic states of H2S are investigated by means Auger and double charge transfer spectroscopy. From the kinetic energy distribution H− ions arising from charge-transfer protons impinging on gaseous several singlet state energies H2S2+ have been resolved in 30 to 50 eV region. The most intense experimental peak is narrow proving that doubly ionized ground stable or quasi-stable. LII,IIIVV electron spectrum exhibits a number well-defined structures which exhibit vibrational fine structure...

10.1063/1.459118 article EN The Journal of Chemical Physics 1990-07-15

Isotopically labeled species, D+, 15N+, and 18O+, have been used to study ion-atom interchange reactions at room temperature and, the case of lower temperatures. The use isotopes permits investigation involving otherwise identical atoms. implications these measurements for reaction kinetics are discussed.

10.1063/1.1682228 article EN The Journal of Chemical Physics 1974-09-01

<b>Background and Study Objective</b> Interlaminar full-endoscopic diskectomy is a minimally invasive surgical alternative to microdiskectomy for the treatment of lumbar disk herniation. The authors analyze their results learning curves during after introductory phase this technique. <b>Patients Methods</b> We present case review 76 patients operated on using interlaminar diskectomy. retrospectively analyzed two spinal surgeons' in terms operation time with respect intraoperative blood loss,...

10.1055/s-0035-1570343 article EN Journal of Neurological Surgery Part A Central European Neurosurgery 2016-04-11

The photolysis of N2O in an argon matrix at 7 °K by 8.4 eV energy photons leads to the emission Vegard–Kaplan system N2 (A 3Σ+→X 1Σ+g) and atomic emissions O(1S) →O(1D) N(2D) →N(4S). thermoluminescence which accompanies increase temperature is due O2 3Σ+u→X 3Σ−g). In presence CO, oxygen disappears CO (a 3Π→X 1Σ) Cameron System detected. this case a continuum (3800–5000 Å) apparently CO2 (3B2→X showing that ground state atoms, O(3P), react with cryogenic temperatures: (X 1Σ+)+O(3P) →CO2(3B2),...

10.1063/1.437399 article EN The Journal of Chemical Physics 1979-06-15

Abstract Context: Diabetic ketoacidosis has been described as a rare complication of acromegaly and may be observed in 1% affected patients. The well-described direct lipolytic effect growth hormone results increased availability free fatty acids (FFAs) for hepatic ketogenesis is an important pathogenic event. More recently, identified sodium-glucose-transport-protein 2 inhibitors (SGLT2i). Increased pancreatic glucagon secretion, impaired renal ketone body clearance, increase FFA...

10.1210/jc.2017-00082 article EN The Journal of Clinical Endocrinology & Metabolism 2017-02-21

Ischemic stroke is a serious disease leading to significant morbidity and mortality. Multifocal recurrent strokes are usually caused by embolic diseases, i.e. atrial fibrillation, but rare causes like cerebral vasculitis clotting disorders also well known. Here we report on two patients suffering from the very intravascular large B-cell lymphoma multifocal in brain spinal cord as prominent neurological symptom. The difficulties need for diagnostic biopsy making an 'in vivo' diagnosis this...

10.1159/000334130 article EN cc-by-nc Case Reports in Neurology 2011-01-01

10.1016/j.otsr.2015.09.007 article EN publisher-specific-oa Orthopaedics & Traumatology Surgery & Research 2015-10-03

The formation of catheter tip granulomas is an increasingly observed serious complication intrathecally administered medication. This complication, which frequently associated with neurological disturbances, has previously been attributed to high dosages and concentrations intrathecal morphine. Much less commonly, hydromorphone baclofen have also granuloma formation. In the current case, we report a patient who developed her first after 20 months After surgical removal installation new...

10.1055/s-0029-1202359 article EN Central European Neurosurgery 2009-11-18
Coming Soon ...