Erratum to "Characterization and densification of defect pyrochlore oxide powders ABi2Ta5O16 (A=Na, Tl)" [Heliyon 5 (5) (May 2019) e01628].

[This corrects the article DOI: 10.1016/j.heliyon.2019.e01628.].

Characterization and densification of defect pyrochlore oxide powders ABi2Ta5O16 (A=Na, Tl).

Defect pyrochlore oxide powders ABi2Ta5O16, in the pseudo-binary systems BiTaO4-ATa3O8 (A = Na, Tl), were prepared by solid state method. The structural study showed that all oxides crystallize in a cubic system with the space group Fd3m, the lattice parameter "a" were determined using Rietveld refinement method. For systematic study on densification from powders, the samples were pressed with a uniaxial pressure into pellets; sintering temperature, holding time and heating rate were optimized. Techniques, including X-ray diffraction, IR-Raman, MEB, dilatometry, were employed to investigate the structure and the morphology of the synthesized powders and sintered materials. The dielectric characteristics, relative permittivity and dielectric losses (tgδ), determined at room temperature are comparable to those of other pyrochlores.

[Occipital sinus pericranii: About an unusual situation and review of the literature]. / Sinus pericranii occipital : à propos d'une situation inhabituelle et revue de la littérature.

The sinus pericranii refers to a set of clinical presentations that share a pathological communication between the scalp veins and the underlying cranial venous sinus. The nature of this connection ranges from the simple dilatation of the emissary veins, to wide connections through a calvarial bone loss leaving almost the cranial venous sinus in direct contact with the subcutaneous tissue. The authors present the case of an occipital pericranii sinus of intraoperative discovery. Congenital, post-traumatic or spontaneous, this anomaly is most often frontal and located on or close to the midline. The usual clinical presentation is that of a soft mass that empties to the pressure while standing, while it fills in all situations that increase the intracranial pressure (Valsalva maneuver …). The diagnosis is not always easy to establish, and relies on a bundle of clinical and radiological arguments. Through a review of the literature we propose to focus on the clinical features, diagnostic means and therapeutic options of this rare entity.

Permanence and Extinction of a Diffusive Predator-Prey Model with Robin Boundary Conditions.

The main concern of this paper is to study the dynamic of a predator-prey system with diffusion. It incorporates the Holling-type-II and a modified Leslie-Gower functional responses under Robin boundary conditions. More concretely, we study the dissipativeness of the system by using the comparison principle, and we derive a criteria for permanence and for predator extinction.

Epithelioid hemangioendothelioma, an uncommon tumor of the eyelid: A case report.

Epithelioid hemangioendothelioma (EHE) is an infrequent vascular tumor that has an intermediate prognosis between the prognosis of the angioma and that of the angiosarcoma. Its evolution is characterized by a tendency to recurrence and metastases. EHE has been reported in locations such as: lungs, liver, bone and soft tissues. There are very few reports of cases involving the head and neck region. The occurrence of EHE in the orbital region and/or the eyelid is extremely rare. The authors report a case of EHE in the right upper eyelid. Surgical excision has been performed resulting in a good local control of the disease after a 5-year follow up.

[Saccharomyces cerevisiae invasive infection: The first reported case in Morocco]. / Infection invasive à Saccharomyces cerevisiae : le premier cas rapporté au Maroc.

Saccharomyces cerevisiae is a cosmopolitan yeast, widely used in agro-alimentary and pharmaceutical industry. Its impact in human pathology is rare, but maybe still underestimated compared to the real situation. This yeast is currently considered as an emerging and opportunistic pathogen. Risk factors are immunosuppression and intravascular device carrying. Fungemias are the most frequent clinical forms. We report the first case of S. cerevisiae invasive infection described in Morocco, and to propose a review of the literature cases of S. cerevisiae infections described worldwide. A 77-year-old patient, with no notable medical history, who was hospitalized for a upper gastrointestinal stenosis secondary to impassable metastatic gastric tumor. Its history was marked by the onset of septic shock, with S. cerevisiae in his urine and in his blood, with arguments for confirmation of invasion: the presence of several risk factors in the patient, positive direct microbiological examination, abundant and exclusive culture of S. cerevisiae from clinical samples. Species identification was confirmed by the study of biochemical characteristics of the isolated yeast. Confirmation of S. cerevisiae infection requires a clinical suspicion in patients with risk factors, but also a correct microbiological diagnosis.

Current and future imaging of the peripheral nervous system.

Peripheral nervous system (PNS) imaging is usually carried out by ultrasound and MRI. Thanks to its wide availability and excellent spatial resolution, ultrasound is a mature investigation with clearly established indications, particularly in entrapment syndromes and tumors. MRI is generally a second-line examination, which provides decisive additional information thanks to its excellent contrast resolution and its multiplanar abilities. This review describes the current methods for imaging the PNS, concentrating on acquisition techniques, normal results and basic pathological semiology. Ongoing and future developments are described in order to underline the forthcoming changes in this very dynamic field of musculoskeletal radiology.

[A comparison of Airtraq™ laryngoscope and standard direct laryngoscopy in adult patients with immobilized cervical spine]. / Comparaison de l'Airtraq™ et du laryngoscope Macintosh pour l'intubation trachéale chez l'adulte avec stabilisation manuelle en ligne du rachis cervical.

INTRODUCTION: Airtraq laryngoscope is a new and single use device for endotracheal intubation. Few studies showed the superiority of the Airtraq comparing to Macintosh laryngoscope in the setting of difficult intubation. STUDY DESIGN: To compare the performance of these two laryngoscopes by simulating a situation of reduced mobility of the cervical spine by applying the Manual in-line stablization (MILS) maneuver. PATIENTS AND METHODS: After obtaining the approval of the ethic committee, we realized a prospective single blind randomized study. During a 6-month period, 120 consenting patients scheduled for ORL or ophthalmologic surgery were included. They all had general anesthesia and orotracheal intubation. These patients were randomly and equally divided in two groups (n=60), depending on the type of the laryngoscope used (Airtraq or Macintosh). Were excluded from the study the patients with history or criteria predicting difficult intubation. Each patient was intubated by one of the five experimented anesthetists selected for this work. The principle judgment criteria were: i) the time taken for the orotracheal intubation and ii) the intubation difficulty score (IDS). The secondary judgment criterion was the hemodynamic modifications after the endotracheal intubation. RESULTS: Demographic and upper airway track variables were comparable between the two groups. There was no case of failure of intubation in this serie. Nonetheless, all the patients of the Airtaq group were intubated from the first attempt, whereas half of the patients of the Macintosh group were intubated after the third attempt. Comparing to the Macintosh, the Airtraq reduces the time taken for the orotracheal intubation (14±1s vs 19±3s, P=0.01), the necessity of additional maneuver to facilitate the intubation, and the intubation difficulty score (0.7±0.3 vs 3.8±1, P<0.001). Orotracheal intubation using the Airtraq laryngoscope caused less hemodynamic stimulation than using the Macintosh. CONCLUSION: Our study showed the usefulness of the Airtraq laryngoscope for endotracheal intubation for patients presenting conditions of difficult intubation such as reduced mobility of the cervical spine.

Molecular epidemiology of Staphylococcus aureus strains isolated from inpatients with infected diabetic foot ulcers in an Algerian University Hospital.

Staphylococcus aureus is the most common pathogen cultured from diabetic foot infection (DFI). The consequence of its spread to soft tissue and bony structures is a major causal factor for lower-limb amputation. The objective of the study was to explore ecological data and epidemiological characteristics of S. aureus strains isolated from DFI in an Algerian hospital setting. Patients were included if they were admitted for DFI in the Department of Diabetology at the Annaba University Hospital from April 2011 to March 2012. Ulcers were classified according to the Infectious Diseases Society of America/International Working Group on the Diabetic Foot classification system. All S. aureus isolates were analysed. Using oligonucleotide arrays, S. aureus resistance and virulence genes were determined and each isolate was affiliated to a clonal complex. Among the 128 patients, 277 strains were isolated from 183 samples (1.51 isolate per sample). Aerobic Gram-negative bacilli were the most common isolated organisms (54.9% of all isolates). The study of ecological data highlighted the extremely high rate of multidrug-resistant organisms (MDROs) (58.5% of all isolates). The situation was especially striking for S. aureus [(85.9% were methicillin-resistant S. aureus (MRSA)], Klebsiella pneumonia (83.8%) and Escherichia coli (60%). Among the S. aureus isolates, 82.2% of MRSA belonged to ST239, one of the most worldwide disseminated clones. Ten strains (13.7%) belonged to the European clone PVL+ ST80. ermA, aacA-aphD, aphA, tetM, fosB, sek, seq, lukDE, fnbB, cap8 and agr group 1 genes were significantly associated with MRSA strains (p <0.01). The study shows for the first time the alarming prevalence of MDROs in DFI in Algeria.

On the optimal size of marine reserves.

The excessive and unsustainable exploitation of our marine resources has led to the promotion of marine reserves as a fisheries management tool. Marine reserves, areas in which fishing is restricted or prohibited, can offer opportunities for the recovery of exploited stock and fishery enhancement. This study examines the impact of the creation of marine protected areas, from both economic and biological perspectives. The consequences of reserve establishment on the long-run equilibrium fish biomass and fishery catch levels are evaluated. We include reserve size as control variable to maximize catch at equilibrium. A continuous time model is used to simulate the effects of reserve size on fishing catch. Fish movements between the sites is assumed to take place at a faster time scale than the variation of the stock and the change of the fleet size. We take advantage of these two time scales to derive a reduced model governing the dynamics of the total fish stock and the fishing effort. Simulation results suggest that the establishment of a protected marine reserve will always lead to an increase in total fish biomass, an optimal size of a marine reserve can achieve to maximize the catch at equilibrium.

Epidemiological analysis of burn patients in the military hospital, Rabat, Morocco.

A retrospective study was conducted of burn patients admitted to the military hospital in Rabat, Morocco, in the 6-yr period from 2004 to 2009. This is the first multivariate study to be performed in Morocco. The epidemiological data from the 291 patients hospitalized were collected and studied. The type of burn was indicated in 284 of the patients: 94% of the injuries were thermal burns, 4% were electrical burns, and 1.5% chemical burns. In 261 cases the exact aetiology was noted: 56% of accidents were caused by flames, 38% by hot liquids, 4% by electric current, and 2% by chemicals. The distribution of the Moroccan population is as follows: 0-4 yr, 7%; 5-l4 yr, 8%; 15-19 yr, 8%; 20-59 yr, 70%; over 60 yr, 7%. The male/female sex ratio was 1.63. The mean duration of hospitalization stay was 42 ± 62 days. The mean body surface area burned was 21 ± 18%. Total mortality was 5%; 57% of deaths were due to septic shock. Our results were similar to data from other studies in the literature, with certain characteristics in our series, especially the age bracket most affected, the body surface area burned, and the mechanisms of injury.

[Tissue expanders in the treatment of burn injuries]. / Les Protheses d'Expansion dans le Traitement des Sequelles de Brulures.

Les Auteurs présentent leur protocole pour l'expansion cutanée et rapportent quatre cas colligés au service des brûlures de leur hôpital au Maroc. Ils décrivent leur technique opératoire et les résultats obtenus. L'expansion cutanée reste la méthode de choix pour la couverture des pertes de substance étendues et la correction des séquelles de brûlure, et l'expérience rapportée par les Auteurs confirme les bons résultats que l'on peut obtenir avec cette technique, y compris les résultats esthétiques.

[Chemical burns caused by the shrub nerium oleander]. / Les Brulures Chimiques Par Le Laurier Rose.

Nerium Oleander is a shrub that grows naturally in the Mediterranean regions. In Morocco it is found in wet places. It is famous for its risk of systemic toxicity in cases of poisoning because of the presence of two alkaloids, especially oleandrine. The literature describes cases of local use of leaves of this plant against scabies, haemorrhoids, and boils. We report two cases of chemical burns of different gravity due to Nerium Oleander. This should lead to more widely diffused information for the general population and strict regulation of its marketing.

[Utility of the hypogastric flap in the treatment of burns to the dorsum of the hand]. / Interet du Lambeau Hypogastrique Dans le Traitement des Sequelles de Brulure de la Face Dorsale de la Main.

Hypogastric flaps are axial cutaneous flaps vascularized by the superficial inferior epigastric pedicle. They are an effective way of covering the posterior face of the hand and wrist. Four patients benefited from this manner of substance loss after excision of the scar tissue required a hypogastric flap severed on day 21. The aesthetical and functional results were quite satisfactory. This type of flap is the technique of choice in the treatment of hand burn sequelae with exposure of the noble elements - with its ease of dissection, it presents few complications and requires only a little eventual touching-up to provide optimal results.

[Münchausen syndrome by proxy. A case report]. / Le syndrome de Münchausen par procuration. A propos d'un cas.

The plastic surgeon rarely encounters patients with factitious disorders. The syndrome of Münchausen by proxy is a part of it. We put the point on this syndrome through a clinical observation of an eight-year-old girl victim of parental abuse.

[Not Available]. / La Prise en Charge des Brulures Electriques: a Propos de 30 Cas.

Les brûlures électriques sont rares mais graves nécessitant une prise en charge urgente et adéquate car l'évolution peut être émaillée de complications graves, notamment cardiaques, neurologiques et rénales, et les séquelles sont importantes. A travers une étude analytique et rétrospective de janvier 2000 à novembre 2007 ayant inclus 30 patients admis au Service des Brûlés de l'Hôpital Militaire d'Instruction Mohamed V de Rabat, Maroc, pour prise en charge de brûlures électriques, il a été relaté les mécanismes des brûlures électriques, comme aussi les complications, la morbidité et la mortalité, dues aux brûlures électriques, tout en insistant sur les modalités de prise en charge initiale chez ces patients. La prévention reste le point capital pour réduire l'incidence de ces accidents. Cette prévention se base sur la surveillance des enfants et l'élimination de facteurs de risque à la maison, par la maintenance des installations électriques et par l'information et l'éducation du public.

[Not Available]. / Brulures par Bouillottes Chez les Diabetiques.

Diabetic neuropathy is a frequent complication of diabetes. The most frequent clinical form is known as "sock polyneuritis", with loss of sensitivity to pain in the feet. Hot water bottle burns are the prerogative of diabetic patients suffering from a form of sensitive polyneuropathy. Such burns are deep. It is difficult to take therapeutic responsibility and decisions must be multidisciplinary. We underline the importance of the education of diabetic patients and of arousing their awareness to the possible risks involved in the use of hot water bottles.