Fe-Ni-based alloys as highly active and low-cost oxygen evolution reaction catalyst in alkaline media.

NiFe-based oxo-hydroxides are highly active for the oxygen evolution reaction but require complex synthesis and are poorly durable when deposited on foreign supports. Herein we demonstrate that easily processable, Earth-abundant and cheap Fe-Ni alloys spontaneously develop a highly active NiFe oxo-hydroxide surface, exsolved upon electrochemical activation. While the manufacturing process and the initial surface state of the alloys do not impact the oxygen evolution reaction performance, the growth/composition of the NiFe oxo-hydroxide surface layer depends on the alloying elements and initial atomic Fe/Ni ratio, hence driving oxygen evolution reaction activity.

Chemical Reactivity and Respiratory Toxicity of the α-Diketone Flavoring Agents: 2,3-Butanedione, 2,3-Pentanedione, and 2,3-Hexanedione.

Occupational exposure to 2,3-butanedione (BD) vapors has been associated with severe respiratory disease leading to the use of potentially toxic substitutes. We compared the reactivity and respiratory toxicity of BD with that of two structurally related substitutes, 2,3-pentanedione (PD) and 2,3-hexanedione (HD). Chemical reactivity of the diketones with an arginine substrate decreased with increasing chain length (BD > PD > HD).

Macrophage solubilization and cytotoxicity of indium-containing particles as in vitro correlates to pulmonary toxicity in vivo.

Macrophage-solubilized indium-containing particles (ICPs) were previously shown in vitro to be cytotoxic. In this study, we compared macrophage solubilization and cytotoxicity of indium phosphide (InP) and indium-tin oxide (ITO) with similar particle diameters (∼ 1.5 µm) and then determined if relative differences in these in vitro parameters correlated with pulmonary toxicity in vivo.

Macrophage solubilization and cytotoxicity of indium-containing particles in vitro.

Indium-containing particles (ICPs) are used extensively in the microelectronics industry. Pulmonary toxicity is observed after inhalation exposure to ICPs; however, the mechanism(s) of pathogenesis is unclear. ICPs are insoluble at physiological pH and are initially engulfed by alveolar macrophages (and likely airway epithelial cells).

Pleural effects of indium phosphide in B6C3F1 mice: nonfibrous particulate induced pleural fibrosis.

The mechanism(s) by which chronic inhalation of indium phosphide (InP) particles causes pleural fibrosis is not known. Few studies of InP pleural toxicity have been conducted because of the challenges in conducting particulate inhalation exposures, and because the pleural lesions developed slowly over the 2-year inhalation study. The authors investigated whether InP (1 mg/kg) administered by a single oropharyngeal aspiration would cause pleural fibrosis in male B6C3F1 mice.

Polylactic acid implants (New-Fill) to correct facial lipoatrophy in HIV-infected patients: results of the open-label study VEGA.

Background: In the absence of currently available therapy to manage facial lipoatrophy, strategies used to compensate for facial fat loss warrant clinical evaluation.

Methods: The goal of this open-label, single-arm, pilot study was to evaluate the efficacy and safety of facial injections of poly-L-lactic acid (PLA) (New-Fill) in HIV-infected patients with severe facial lipoatrophy. Patients received four sets of injection at day 0 and then every 2 weeks for 6 weeks.

Isolation of bone marrow plasma cells by negative selection with immunomagnetic beads.

In order to isolate bone marrow plasma cells from patients presenting with multiple myeloma or monoclonal gammopathy of undetermined significance, we developed a method for purifying these cells by negative selection using monoclonal antibodies and immunomagnetic beads. The results presented here were obtained from 75 procedures. Purity was extremely variable (2-100%) and was dependent on the percentage of plasma cells in the original bone marrow sample with a 10% cut-off, beyond which purity was over 96% in all cases.

[Splenectomy in hematologic diseases. Indications, technics and early results. A retrospective study of 1095 cases].

Since July 1st, 1958, we have operated 1095 patients with some hematological disease. We review the chief currently accepted surgical indications for splenectomy (Hodgkin's disease no longer being one of them, or seldom so), and we communicate our results pertaining to the immediate postsurgical period. Mortality and morbidity have been 1.

[Splenectomy for hematologic indications. Indications, early results (author's transl)].

In the light of their personal experience of 1,036 splenectomies, the authors review the hematological diseases which still require surgery, viz. certain hemolytic anemias, idiopathic thrombocytopenic purpura, Hodgkin's disease under certain conditions, and sometimes the splenic lesions in certain malignant blood diseases; they analyse their results. Thanks to close collaboration between hematologists and intensive care specialists, the mortality has been reduced to 1.

[Laparotomy with splenectomy in Hodgkin's disease. Critical study of results in 123 patients].

123 laparotomies with splenectomy have been performed in 3 groups of patients. 1. 40 patients with infra-diaphragmatic relapses afer mantle field radiotherapy for supra-diaphragmatic disease.