Cutaneous anaplastic large cell lymphoma - A case report

Cutaneous involvement in anaplastic large cell lymphoma may be in the form of primary cutaneous disease (primary cutaneous anaplastic large cell lymphoma) or secondary to involvement by systemic disease (systemic anaplastic large cell lymphoma). This case report, an example of the latter, describes a solitary cutaneous lesion as the first evidence of disseminated neoplastic disease. The histology of the lesion was identical to its primary cutaneous counterpart

WO3-SiO2 nanomaterials synthesized using a novel template-free method in supercritical CO2 as heterogeneous catalysts for epoxidation with H2O2

A series of tungsten oxide-silica (WO3-SiO2) composite nanomaterials were synthesized through a novel, template-free sol-gel method, in which supercritical-CO2 (scCO(2)) was utilized as synthesis medium. The efficacy of the synthesis method stems from a tailored reactor design that allows the contact of the reactants only in the presence of scCO(2). Selected synthetic parameters were screened with the purpose of enhancing the performance of the resulting materials as heterogeneous catalysts in epoxidation reactions with H2O2 as environmentally friendly oxidant. A cyclooctene conversion of 73% with epoxide selectivity of > 99% was achieved over the best WO3-SiO2 catalyst under mild reaction conditions (80 degrees C), equimolar H2O2 amount (1:1) and low WO3 loading (similar to 2.5 wt%). The turnover number achieved with this catalyst (TON = 328), is significantly higher than that of a WO3-SiO2 prepared via a similar sol-gel route but without supercritical CO2, and that of commercial WO3. A thorough characterization with a combination of techniques (ICP-OES, N-2-physisorption, XRD, TEM, STEM-EDX, SEM-EDX, FT-IR and Raman spectroscopy, XPS, TGA and FT-IR analysis of adsorbed pyridine) allowed correlating the physicochemical properties of the WO3-SiO2 nanomaterials with their catalytic performance. The high catalytic activity was attributed to: (i) the very high surface area (892 m(2)/g) and (ii) good dispersion of the W species acting as Lewis acid sites, which were both brought about by the synthesis in supercritical CO2, and (iii) the relatively low hydrophilicity, which was tuned by optimizing the tetramethyl orthosilicate concentration and the amount of basic solution used in the synthesis of the materials. Our optimum catalyst was also tested in the reaction of cyclohexene with H2O2, resulting in cyclohexane diol as main product due to the presence of strong BrOnsted acid sites in the catalyst, whereas the reaction with limonene yielded the internal epoxide as the major product and the corresponding diol as side product. Importantly, the catalyst did not show leaching and could be reused in five consecutive runs without any decrease in activity. (C) 2020 The Authors. Published by Elsevier Ltd

Cutaneous anaplastic large cell lymphoma - A case report

Cutaneous involvement in anaplastic large cell lymphoma may be in the form of primary cutaneous disease (primary cutaneous anaplastic large cell lymphoma) or secondary to involvement by systemic disease (systemic anaplastic large cell lymphoma). This case report, an example of the latter, describes a solitary cutaneous lesion as the first evidence of disseminated neoplastic disease. The histology of the lesion was identical to its primary cutaneous counterpart

Climate Change Resilience: The case of Haiti

Haiti has long faced severe natural and human-created hazards due to its location in the Caribbean hurricane zone and to widespread deforestation. Hazards including storms, floods, and droughts have highly destructive impacts on buildings, land, water, livestock, and people in Haiti. The poorest Haitians, including low-income women, children, and elderly people, are especially vulnerable.The prospects for building Haiti's resilience to climate change are closely tied to post-earthquake reconstruction. As Haiti prepares for more disasters and rebuilds significant parts of its infrastructure, there is a real opportunity to integrate climate resilience into these efforts.This report analyses Haiti's adaptive capacity, adaptation options, and finance and governance issues. It makes recommendations on resilience building and identifies climate-change adaptation needs and opportunities