Improving of photocatalytic activity of barium ferrate via bismuth and copper co-doping for degradation of paracetamol under visible light irradiation.

Nanosized BaBiFeCuO (12-50 nm) with x values of 0, 0.01, 0.05, and 0.

Identification of the influence of distal inputs on mercury loading across the mid Great Lakes region using chemical sediment chronologies.

Sediment cores from 47 inland lakes in Michigan, USA were used to assess spatial and temporal trends in loadings of mercury (Hg). Focusing/background corrected accumulation rates and inventories and peak concentrations were used to examine: 1) responses of loadings to post-1990 reductions in emissions, 2) if spatial trends are consistent with modeled Hg deposition and 3) evidence for local and distal inputs. Results showed that decreases in concentrations and anthropogenic accumulation rates of Hg were consistent with recent reductions in emissions of Hg.

Visible light activity of BaFeCuO as photocatalyst for atrazine degradation.

Nanosized BaFeCuO powders were prepared using the Pechini method. To limit grain growth and agglomeration, the temperature of calcination was limited to 800 °C. For all samples, the cubic form of BaFeO was predominant with minor additional phases.

Oxide diffusion in innovative SOFC cathode materials.

Oxide diffusion was studied in two innovative SOFC cathode materials, Ba(2)Co(9)O(14) and Ca(3)Co(4)O(9)+δ derivatives. Although oxygen diffusion was confirmed in the promising material Ba(2)Co(9)O(14), it was not possible to derive accurate transport parameters because of an oxidation process at the sample surface which has still to be clarified. In contrast, oxygen diffusion in the well-known Ca(3)Co(4)O(9)+δ thermoelectric material was improved when calcium was partly substituted with strontium, likely due to an increase of the volume of the rock salt layers in which the conduction process takes place.

Elucidating the genesis of Bi2MoO6 catalyst by combination of synchrotron radiation experiments and Raman scattering.

Combination of in situ Raman scattering with high-resolution XRD and XAS techniques has proven to be a powerful tool to elucidate the crystal growth of gamma-Bi2MoO6 under hydrothermal conditions.

Membranoproliferative glomerulonephritis associated with pulmonary sarcoidosis.

A 34-year-old woman with pulmonary and ganglionary sarcoidosis developed a nephritic syndrome. The renal biopsy demonstrated a type-1 membranoproliferative glomerulonephritis. Clinical and histological remission of the renal disease following indomethacin treatment was associated with the remission of sarcoidosis.

[Pulp protectors and the deep regions of the cavity].

Increasing emphasis is being placed on the use of agents for protection of the pulp and the deep regions of the pulp cavity, modern conservative dentistry attempting as far as possible to conserve pulp vitality. The aim of this report is to assist the dental practitioner in his choice of the different varnishes and cements marketed by dental product manufacturers, to ensure the maximum of benefits for patients' teeth.

[Pitfalls in restorative dentistry].

The first part of this report contains data on the pitfalls which may be encountered during the diagnosis of conditions for which reconstructive dentistry is applicable: dental caries, pulpitis, pulpo -arthritis, desmodontitis . The second part enumerates possible pitfalls during reconstructive dental surgery: anesthesia, arsenical dressings, use of canal pins and of ozone, canal obturation and its immediate consequences, nerve root artefacts and sections under anesthesia, apical cysts, caries obturation.

[Cutaneous, subcutaneous, and lymph node cryptoccosis in a patient with sarcoidosis (author's transl)].

An Algerien patient aged 31 years with a histologically confirmed mediastinopulmonary sarcoidosis had a persistent stable miliary pulmonary x-ray image after cortisone therapy. Eighteen months after stopping the corticotherapy, he developed cryptococcosis which was mainly cutaneous, but associated with subcutaneous abscesses and peripheral adenopathy, and without lesions in the viscera or deep nodes. Cryptococcus antigens were present in the serum and there was a humoral and cellular immunity reaction towards the cryptococcus.

[Partial anomalous pulmonary venous drainage of the left lung into the innominate vein (author's transl)].

From 5 cases of partial anomalous pulmonary venous drainage of the left lung into the innominate vein, it has been thought of interest to situate this type of venous anomaly among the partial anomalous pulmonary venous drainage classification. It is revealed in 2 different ways. In adults, this malformation sets the problem of the diagnosis of an abnormal chest Xray, without symptom.

[Isolated cystic lymphangioma in the mediastinum].

Cystic lymphangioma localized only in the mediastinum is a rare type of primitive tumour (less than 1% of the mediastinum primitive tumours). These three new observations concern lymphangiomas with an anterior position ; therir anatomical connections with the lymphatic system are difficult to show. Treated by surgery these benign tumours have a good prognosis and only a few cases of local recurrences have been reported.

[Abnormal partial pulmonary venous return of the left lung in an adult (author's transl)].

The authors report a case of left-sided abnormal partial pulmonary venous return. This abnormality was discovered following weight loss with a strongly positive tuberculin skin test. A plain chest X-ray showed an externally convex opacity filling the aortico-pulmonary space, suggestive of a lymphadenopathy in that area.

[The treatment of hemoptysis by embolization of the systemic arteries (author's transl)].

The authors present their still limited experience of embolization of systemic arteries as the treatment of hemoptysis. Their cases illustrate the indications, contra-indications, causes of failure and effectiveness of this therapeutic method in pneumology. They had to refuse who patients: in the first, the pathological bronchial artery arose from a common trunk with the intercostal which gave rise to an anterior spinal artery.

[Radiological exploration of pulmonary systemic hypervascularization. Study of our results concerning 83 cases. Confrontation of the angiographic results with the existence of hemoptysis (author's transl)].

The authors present the results of selective bronchial and parietal arteriography of pulmonary systemic hypervascularization, in 83 cases. They emphasize the advantages of previous pulmonary venous angiography and overall aortography for the success of selective injections. Failures are evaluated at 6 to 7%.