Benign chondroid syringoma of the orbit: a rare cause of exophtalmos

Chondroid syringoma (CS) of the orbit is an extremely rare benign neoplasm. To the best of our knowledege, this is the second case reported in the english litérature

Proposition d'une solution de journalisation pour les structures de données distribuées et scalables(SDDS) de type hachage linéaire distribué(LH*)

102 p. , ill. , 30 cmLe travail consiste à proposer une solution de journalisation adaptée à la méthode de distribution de données LH* (Distributed Linear Hashing). LH* fait partie de la classe de SDDS (Scalable distributed data structures), et possède alors comme caractéristique la gestion des données en mémoire centrale. Donc elle très sensible aux pannes systèmes provoquant la perte de la mémoire centrale. Nous avons proposé une solution où les journaux Undo/Redo des transactions actives sont gérés en mémoire centrale de chaque serveur. Nous avons aussi proposé deux solutions pour la gestion de la journalisation des transactions validées, l'une utilisant un journal Redo global sur disque centralisé et l'autre utilisant des journaux Redo sur disques au niveau de chaque serveur. Notre méthode de journalisation, permet le recouvrement du dernier état cohérent des données après n'importe quelle panne, même celles qui se produisant au milieu des opérations complexe telle que l'éclatement et la fusion de cases LH

Numerical modeling of transients in gas pipeline

A set of equations governing an isothermal compressible fluid flow is analytically and numerically analyzed. The obtained equations are written in characteristic from and resolved by a predictorcorrector lambda sceme for the interior mesh points. The method of characteristics (MOC) is used for the boundaries. Advantages of explicit form of these schemes and the flexibility of the MOC are used for an isothermal fast transient gas flow in short pipeline. The results, obtained for a simple practical application agree with those of other method

Primary extradural hydatid cyst extended to paraspinal muscles

Primary spinal epidural hydatid cyst without bony involvement is extremely rare. Authors report the case of a 44-yearold female brought to their attention for a rapidly progressive paraplegia. Magnetic resonance imaging (MRI) revealed extradural multiple cysts with “bunch of grapes” appearance extended to the paraspinal muscles through neural foramina without bony involvement on computed tomography (CT) scan. Histopathologic examination after a surgical approach confirmed the diagnosis of hydatid cyst. The early postoperative period showed a progressive improvement of her neurological deficit. The long-term follow-up under discontinued antihelminthic chemotherapy was uneventful

Comportement mécanique du schiste traité par des ajouts du ciment et de la chaux

La stabilité des infrastructures est un souci majeur pour différentes raisons économiques, écologiques ou, plus important, la sécuritédes batiment. Ceci peut se faire par différentes techniques, mécanique, chimique ou les deux à la fois, afin d’améliorer les propriétésgéotechniques des sols instables. Les techniques utilisées sont les ajouts, dont les plus courants sont la chaux et le ciment. Cette étude a pour objet de déterminer l’évolution des propriétés géotechniques d’un sol schisteux du pôle universitaire d’El-Aouana dans la wilaya de Jijel (Algérie). L’échantillon prélevé sur site a été modifié avec des proportions d’additifs avec 0, 1 %, 3 % et 7 % du remplacement du ciment et de la chaux en poids sec afin de tester les différents proprietées de la patte fraiche du sol argileux.On conclut que l’addition d’un liant (Ciment ou chaux) au sol schisteux provoque une réduction de la plasticité, une amélioration des caractéristiques de compactage au Proctor, une augmentation rapide de l’indice de portance immédiat en fonction du traitement et une augmentation de la cohésion et de l’angle de frottement

Chronic subdural haematoma revealed by quadriparesis: A case report

Introduction: A subdural haematoma is an accumulation of blood between the brain and its surrounding dural covering which acts as a space-occupying lesion causing increased intracranial pressure and cerebral compression. Chronic subdural haematomas (CSDH) differ from acute subdural haematomas in so far as occurring mainly in the elderly. A history of direct head trauma is absent in upto 50% of cases. Case report: A 64-year old man, presented to the emergency centre with a sudden onset of right leg weakness. He initially denied any head injury but later recalled a minor head injury some weeks prior. Half an hour after presentation, his weakness progressed to a complete quadriparesis, while his sensory function remained intact and two hours after presentation he developed a complete flaccid quadriplegia. A CT scan was performed and revealed bilateral CSDH. Bilateral posterior and frontal burr holes were made under local anaesthesia, and 100 ml of blood was evacuated. Clinical improvement was almost immediately noted. After two days, his neurologic examination was without any abnormality. Discussion: CSDH is more common in the elderly. As reported here, clinical features may be delayed after the causal head injury (often weeks), and the trauma may even be forgotten. Cases manifesting bilateral haematomas are quite rare. The mechanism for quadriparesis is not fully understood. Motor deficit in the arms can be explained by direct compression or distortion of the cerebral hemispheres. This would not, however, account for motor weakness in the legs because the cortical areas responsible for the lower limbs would be relatively protected from the direct effect of compression. CSDH can present in many clinical scenarios, and may develop in the absence of a reported head injury. The diagnosis of CSDH should be considered in the differential when investigating cases of quadriplegia of uncertain aetiology, especially in the elderly population

The Anti-urolithiatic effect of the roots of Saussurea costus (falc) Lipsch agonist ethylene glycol and magnesium oxide induced urolithiasis in rats

Phytotherapy, which involves the use of plant extracts and natural compounds for medicinal purposes, is indeed a promising alternative for managing urinary lithiasis. Many plants have been studied for their potential to prevent and treat kidney stones, and they may offer a more natural and potentially less harmful approach compared to conventional treatments. Additionally, phytotherapy may be more cost-effective. The aim of the present study was to investigate the antilithic potential of extracts and essential oils of Saussurea costus (Falc) Lipsch in two in vivo models, one on ethylene glycol-induced calcium oxalate crystal formation and the other to assess the effects of these extracts on magnesium oxide-induced struvite crystal formation. The experiment involved the administration of different doses of aqueous and ethanolic extracts of S. costus (200 and 400 mg/kg) and essential oils (25 and 50 mg/kg) to male Wistar rats, followed by the evaluation of various physiological, biochemical and histopathological parameters. The results demonstrated that the administration of S. costus essential oils and extracts had significant effects on the rats, influencing body weight, urine volume, crystal deposition, cytobacteriological examination of urine, and serum biochemical parameters. Histopathological examinations revealed varying impacts on the kidneys and livers of the treated rats. The findings suggest that S. costus extracts and essential oils may hold promise in inhibiting calcium oxalate crystal formation in vivo and influencing various physiological and biochemical parameters in rats. Overall, the 200 mg/kg ethanolic extract of S. costus demonstrated antilithiatic efficacy, did not exhibit signs of toxicity and reduced the number of crystals in the kidneys. Furthermore, the study did not find a significant effect on reducing struvite crystals

Radicular interdural lumbar disc herniation

Intraradicular lumbar disc herniation is a rare complication of disc disease that is generally diagnosed only during surgery. The mechanism for herniated disc penetration into the intradural space is not known with certainty, but adhesion between the radicular dura and the posterior longitudinal ligament was suggested as the most important condition. The authors report the first case of an intraradicular lumbar disc herniation without subdural penetration; the disc hernia was lodged between the two radicular dura layers. The patient, a 34-year-old soldier, was admitted with a 12-month history of low back pain and episodic left sciatica. Neurologic examination showed a positive straight leg raising test on the left side without sensory, motor or sphincter disturbances. Spinal CT scan and MRI exploration revealed a left posterolateral osteophyte formation at the L5–S1 level with an irregular large disc herniation, which migrated superiorly. An intradural extension was suspected. A left L5 hemilaminectomy and S1 foraminotomy were performed. The exploration revealed a large fragment of disc material located between the inner and outer layers of the left S1 radicular dura. The mass was extirpated without cerebrospinal fluid outflow. The postoperative course was uneventful. Radicular interdural lumbar disc herniation should be suspected when a swollen, hard and immobile nerve root is present intraoperatively