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Lipoma intraóseo en fémur proximal.

Se presenta un caso de una mujer de 74 años de edad con antecedente doloroso de la cadera izquierda de una año de evolución. En el estudio radiológico se aprecia una lesión quística en zona proximal del fémur del lado izquierdo asociada a signos de coxartrosis. Se decide legrar la lesión e implantar una prótesis total de cadera cementada, en el estudio histológico se encuentra un lipoma intraóseo sin signos de malignidad. A los dos años de evolución la paciente se encuentra asintomática y sin reaparición de la lesión ósea. Se presenta el caso, se establece un diagnóstico diferencial y se revisa la bibliografía dada la influencia de aparición de esta patología tumoral ósea.We presented a case of a patient seventy and four years old with a painful left hip during the last 12 months. On the x-ray exploration, appear a quistic lesion, localizated on the proximal femur and with arthrosis signs of the coxofemo- ral joint. We indicated a total hip arthroplasty, cemented, du- ring the surgery the lesion is legrated, and the histologic study reveal a intraosseus lipoma, without maling signs. At two ye- ars, the patient is asintomatic, and no indicius of the femoral tumor. We presented this case, the intraosseus lipoma, ma- king the diferential diagnosis and revised the bibliografy of this rare osseous tumor

Upgrading of oxygenated compounds present in aqueous biomass-derived feedstocks over NbOx-based catalysts

[EN] The influence of synthesis and post-synthesis procedures of different niobium oxides on their catalytic performance in the aqueous phase condensation of oxygenated compounds is studied. Hydrothermally synthesized niobium oxide with a pseudo-crystalline structure shows enhanced acid properties, surface area and consequently better catalytic activity than Nb2O5 prepared by other synthesis methods. The optimized NbOx-based catalyst also demonstrates higher stability after several reuses compared to the Ce-Zr mixed oxide reference catalyst.Financial support by the Spanish Government (CTQ-2015-67592, CTQ-2015-68951-C3-1, and SEV-2012-0267) is gratefully acknowledged. A. F.-A. and D. D. thank the "La Caixa-Severo Ochoa" Foundation and the Severo Ochoa Excellence Program (SVP-2014-068669), respectively, for their fellowships. Authors also thank the Electron Microscopy Service of Universitat Politecnica de Valencia for their supportFernandez-Arroyo, A.; Delgado-Muñoz, D.; Domine, ME.; López Nieto, JM. (2017). Upgrading of oxygenated compounds present in aqueous biomass-derived feedstocks over NbOx-based catalysts. Catalysis Science & Technology. 7(23):5495-5499. https://doi.org/10.1039/c7cy00916jS54955499723Huber, G. W., Iborra, S., & Corma, A. (2006). Synthesis of Transportation Fuels from Biomass:  Chemistry, Catalysts, and Engineering. Chemical Reviews, 106(9), 4044-4098. doi:10.1021/cr068360dTuck, C. O., Perez, E., Horvath, I. T., Sheldon, R. A., & Poliakoff, M. (2012). Valorization of Biomass: Deriving More Value from Waste. Science, 337(6095), 695-699. doi:10.1126/science.1218930Huber, G. W., & Corma, A. (2007). Synergies between Bio- and Oil Refineries for the Production of Fuels from Biomass. Angewandte Chemie International Edition, 46(38), 7184-7201. doi:10.1002/anie.200604504Alonso, D. M., Bond, J. Q., & Dumesic, J. A. (2010). Catalytic conversion of biomass to biofuels. Green Chemistry, 12(9), 1493. doi:10.1039/c004654jPinheiro, A., Hudebine, D., Dupassieux, N., & Geantet, C. (2009). Impact of Oxygenated Compounds from Lignocellulosic Biomass Pyrolysis Oils on Gas Oil Hydrotreatment. Energy & Fuels, 23(2), 1007-1014. doi:10.1021/ef800507zBui, V. N., Toussaint, G., Laurenti, D., Mirodatos, C., & Geantet, C. (2009). Co-processing of pyrolisis bio oils and gas oil for new generation of bio-fuels: Hydrodeoxygenation of guaïacol and SRGO mixed feed. Catalysis Today, 143(1-2), 172-178. doi:10.1016/j.cattod.2008.11.024Asadieraghi, M., Wan Daud, W. M. A., & Abbas, H. F. (2014). Model compound approach to design process and select catalysts for in-situ bio-oil upgrading. Renewable and Sustainable Energy Reviews, 36, 286-303. doi:10.1016/j.rser.2014.04.050Cherubini, F., Jungmeier, G., Wellisch, M., Willke, T., Skiadas, I., Van Ree, R., & de Jong, E. (2009). Toward a common classification approach for biorefinery systems. Biofuels, Bioproducts and Biorefining, 3(5), 534-546. doi:10.1002/bbb.172Gaertner, C. A., Serrano-Ruiz, J. C., Braden, D. J., & Dumesic, J. A. (2009). Catalytic coupling of carboxylic acids by ketonization as a processing step in biomass conversion. Journal of Catalysis, 266(1), 71-78. doi:10.1016/j.jcat.2009.05.015Omata, K., Matsumoto, K., Murayama, T., & Ueda, W. (2016). Direct oxidative transformation of glycerol to acrylic acid over Nb-based complex metal oxide catalysts. Catalysis Today, 259, 205-212. doi:10.1016/j.cattod.2015.07.01

Laser-based surface multistructuring using optical elements and the Talbot effect

We present a laser based technique combined with the Talbot effect for microstructuring surfaces. The use of the Talbot effect is introduced as a solution to avoid damage of the periodic object used for micropattering different surfaces during the ablation process. The fabrication of two periodic objects (a mask and a microlens array) for micropattering surfaces and the identification of their Talbot planes is presented. A metal foil is ablated at distances corresponding to selected Talbot planes of the periodic objects. The setup allows us to design the desired pattern and the result is a multistructured surface with a high number of identical microholes, achieving a minimum diameter around 4μm. The different aspect of the periodic object working in direct contact and working at these Talbot distances is shown. These pictures reveal the advantages of working of using Talbot effect for a rapid, repeatable and no-contaminant multistructuring. Some industrial applications are illustrated.This work has been supported by the Consellería de Cultura, Xunta de Galicia/FEDER, Spain under Contract EM2012/019S

La técnica de Spaso para reducción de la luxación anterior de hombro.

Hemos revisado retrospectivamente los pacientes con luxación anterior de hombro que hemos tratado con la maniobra de reducción conocida como la técnica de Spaso. Hemos evaluado a 23 pacientes con luxación glenohumeral antero-inferior. En diecinueve casos era el primer episodio de luxación, mientras que cuatro casos correspondían a luxación recidivante. En todos los pacientes, menos en dos casos, se pudo conseguir la reducción de manera sencilla e indolora sin necesidad de medicación. La técnica consiste en disponer al paciente en decúbito supino, se coloca el miembro superior afectado, en extensión completa del codo y dirigido al cenit, se realiza tracción suave mientras se realiza una rotación externa del miembro. Presentamos esta técnica dada su sencillez, su fiabilidad, su reproducibilidad y su baja tasa de complicaciones.We have reviewed retrospectively a group of patients with previous traumatic dislocation of shoulder trea- ted with of Spaso maneuver. We have evaluated 23 patients with antero-inferior glenohumeral dislocation. In nineteen cases it was the first episode of dislocation, whereas four cases refered recurrent instability. In all patients, except in two cases, the reduction was simple and painless with no need of medication. The Spaso technique consists of arran- ging the patient in supine position, with the affected superior member, in complete extension of elbow, to the cenit, while traction is exerced, with mild external rotation of the arm. We presented this technique that we consider simple, safe and reproductible with a low rate of complications

Yield of forage, grain and biomass in eight hybrids of maize with different sowing dates and environmental conditions

The aim was to evaluate yield of forage, grain and biomass and fibre content of eight hybrids of maize (Rio-Grande, Arrayan, Genex 778, Narro 2010, Advance 2203, DAS 2358, P4082W and HT9150W) during two sowing seasons (spring/summer) for two consecutive years at La Laguna in Torreon, Mexico. Once the grain progression of the kernel milk line was ⅓, green forage yield (GFY), dry matter (DM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were determined. When the corncobs were fully mature, grain yield (GY) and biomass production (TBP) were determined. Weather conditions were recorded during the experiment. The results indicated that maximum temperature was higher and rainfall lower in the summer sowing and second year. Spring sowing had significantly higher yields of GFY, DM, GY and TBP compared to summer sowing. The first year of study showed significantly higher yields regarding GFY, GY and TBP, but FDN, FDA, DM content compared to the second year. The best hybrid for GFY and DM was Rio-Grande; for FDN and FDA was Advance 2203; for GY was HT9150W and finally for TBP was Arrayan. Regardless of the hybrid used and the sowing season, production of maize depended on external factors such as maximum temperature and rainfall; therefore, producers need to consider sowing in spring to avoid the negative effect of high temperatures on plant development.The aim was to evaluate yield of forage, grain and biomass and fibre content of eight hybrids of maize (Rio-Grande, Arrayan, Genex 778, Narro 2010, Advance 2203, DAS 2358, P4082W and HT9150W) during two sowing seasons (spring/summer) for two consecutive years at La Laguna in Torreon, Mexico. Once the grain progression of the kernel milk line was ⅓, green forage yield (GFY), dry matter (DM), neutral detergent fiber (NDF) and acid detergent fiber (ADF) were determined. When the corncobs were fully mature, grain yield (GY) and biomass production (TBP) were determined. Weather conditions were recorded during the experiment. The results indicated that maximum temperature was higher and rainfall lower in the summer sowing and second year. Spring sowing had significantly higher yields of GFY, DM, GY and TBP compared to summer sowing. The first year of study showed significantly higher yields regarding GFY, GY and TBP, but FDN, FDA, DM content compared to the second year. The best hybrid for GFY and DM was Rio-Grande; for FDN and FDA was Advance 2203; for GY was HT9150W and finally for TBP was Arrayan. Regardless of the hybrid used and the sowing season, production of maize depended on external factors such as maximum temperature and rainfall; therefore, producers need to consider sowing in spring to avoid the negative effect of high temperatures on plant development

Lipoma intramuscular del músculo deltoides: Presentación de cuatro casos

Describimos cuatro casos de lipoma intramuscular del músculo deltoides en cuatro pacientes, dos mujeres y dos varones con una edad media de 62 años. Dos están situados en el lado derecho y dos en el izquierdo. Las tumoraciones tienen un tamaño que oscila entre 5 y 8 centímetros, produciendo un cuadro clínico de dolor y limitación funcional del hombro. En tres de los cuatro pacientes se realiza tratamiento definitivo con extirpación quirúrgica de la tumoración. Con un seguimiento mínimo de año y medio, no existe recidiva de la lesión y los pacientes muestran una recuperación clínica y funcional completa.We describe four intramuscular lipoma in the deltoids muscle, in four patients (two women and two men), 62 years old. Two of the tumors were localized in the right side and two in the left side. The tumor size was between 5 and 8 centimetres, causing pain and functional disability of the shoulder. Three of the four patients were treated by surgical extirpation of the tumors. 18 months after surgery, none of the tumors have recurred and all patients showed a total functional recovery

Laser Surface Microstructuring of Biocompatible Materials Using a Microlens Array and the Talbot Effect: Evaluation of the Cell Adhesion

A laser based technique for microstructuring titanium and tantalum substrates using the Talbot effect and an array of microlenses is presented. By using this hybrid technique; we are able to generate different patterns and geometries on the top surfaces of the biomaterials. The Talbot effect allows us to rapidly make microstructuring, solving the common problems of using microlenses for multipatterning; where the material expelled during the ablation of biomaterials damages the microlens. The Talbot effect permits us to increase the working distance and reduce the period of the patterns. We also demonstrate that the geometries and patterns act as anchor points for cells; affecting the cell adhesion to the metallic substrates and guiding how they spread over the materialThis work has been supported under contracts MAT2015-71119-R, Ministerio de Economía y Competitividad, and ISCIII/PI14-01140/FEDER, Instituto de Salud Carlos III, Spain. M. Aymerich acknowledges a Pre-Doctoral Fellowship from Xunta de Galicia (Spain) financed by the Secretaría Xeral de Universidades and the Fondo Social Europeo (FSE). D. Nieto thanks the Consellería de Cultura, Spain for their support under the Galician Programme for Research Innovation and Growth (2011–2015) (I2C Plan)S

Reflux-synthesized bulk and diluted W-Nb-O mixed oxide bronzes for the valorization of short-chain oxygenates aqueous mixtures

[EN] This work reports the preparation of bulk and KIT-6-diluted W-Nb-O mixed oxide bronzes by a reflux method. The influence of the incorporation of Nb and a mesoporous silica on the physicochemical features of the catalysts is studied. The addition of Nb favors the formation of single-phase oxide bronze structure, with improved Lewis acidity; while the incorporation of KIT-6 gives rise to well-dispersed mixed metal oxide particles on the diluter. These diluted W-Nb-O catalysts present enhanced surface areas and mesopore volumes. The materials have been tested in the valorization of an aqueous model mixture (acetol/propanal/ethanol/acetic acid/water weight ratio of 5/25/10/30/30), through C-C bond formation reactions. The increase in the Lewis nature of surface acid sites stands as the key point to maximize the total organic yield during the reaction (Cs-Cio products). The best catalysts maintain their catalytic behavior after five consecutive uses.Financial support by the Spanish Government (RT12018-099668-B-C21, PGC2018-097277-B-100, and SEV-2016-0683) is gratefully acknowledged. DD and AF-A thank the Severo Ochoa Excellence Program (SVP-2014-068669) and the "La Caixa-Severo Ochoa" Foundation, respectively, for their fellowships. NS thanks "Conselho Nacional de Desenvolvimento Cientifico y Tecnologico (CNPq)" in Brasil. Authors are also grateful to the Electron Microscopy Service (Universitat Politecnica de Valencia) for facilities.Delgado-Muñoz, D.; Fernández-Arroyo, A.; La Salvia, N.; Domine, ME.; López Nieto, JM. (2019). Reflux-synthesized bulk and diluted W-Nb-O mixed oxide bronzes for the valorization of short-chain oxygenates aqueous mixtures. Chinese Journal of Catalysis. 40(11):1778-1787. https://doi.org/10.1016/S1872-2067(19)63419-4S17781787401

Furfural Hydrogenation on Modified Niobia

[EN] In this study, niobia-based materials have been used as supports for Pt nanoparticles and used in the hydrogenation of furfural. The incorporation of dopants (W6+ and Ti4+) in the Nb2O5 structure induced modifications in the surface acidity of the support; in particular, the addition of W6+ increased the amount of Lewis acid sites, while the addition of Ti4+ decreased the number of Lewis acid sites. As a result, the catalytic activity towards the hydrogenation of furfural was affected; high surface acidity resulted in high catalytic activity. The selectivity of the reaction changed with the support acidity as well, with higher amount of furfuryl alcohol produced decreasing the Lewis acid sites.Jouve, A.; Cattaneo, S.; Delgado-Muñoz, D.; Scotti, N.; Evangelisti, C.; López Nieto, JM.; Prati, L. (2019). Furfural Hydrogenation on Modified Niobia. Applied Sciences. 9(11):1-14. https://doi.org/10.3390/app9112287S114911Binder, J. B., & Raines, R. T. (2009). 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Green Chemistry, 12(8), 1423. doi:10.1039/c003459bGómez Bernal, H., Bernazzani, L., & Raspolli Galletti, A. M. (2014). Furfural from corn stover hemicelluloses. A mineral acid-free approach. Green Chem., 16(8), 3734-3740. doi:10.1039/c4gc00450gDelbecq, F., Wang, Y., Muralidhara, A., El Ouardi, K., Marlair, G., & Len, C. (2018). Hydrolysis of Hemicellulose and Derivatives—A Review of Recent Advances in the Production of Furfural. Frontiers in Chemistry, 6. doi:10.3389/fchem.2018.00146Mariscal, R., Maireles-Torres, P., Ojeda, M., Sádaba, I., & López Granados, M. (2016). Furfural: a renewable and versatile platform molecule for the synthesis of chemicals and fuels. Energy & Environmental Science, 9(4), 1144-1189. doi:10.1039/c5ee02666kYan, K., Wu, G., Lafleur, T., & Jarvis, C. (2014). Production, properties and catalytic hydrogenation of furfural to fuel additives and value-added chemicals. 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E., & López-Nieto, J. M. (2017). Upgrading of oxygenated compounds present in aqueous biomass-derived feedstocks over NbOx-based catalysts. Catalysis Science & Technology, 7(23), 5495-5499. doi:10.1039/c7cy00916jShannon, R. D. (1976). Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides. Acta Crystallographica Section A, 32(5), 751-767. doi:10.1107/s0567739476001551Botella, P., Solsona, B., López Nieto, J. M., Concepción, P., Jordá, J. L., & Doménech-Carbó, M. T. (2010). Mo–W-containing tetragonal tungsten bronzes through isomorphic substitution of molybdenum by tungsten. Catalysis Today, 158(1-2), 162-169. doi:10.1016/j.cattod.2010.05.024Jehng, J. M., & Wachs, I. E. (1991). Structural chemistry and Raman spectra of niobium oxides. Chemistry of Materials, 3(1), 100-107. doi:10.1021/cm00013a025Delgado, D., Fernández-Arroyo, A., Domine, M. E., García-González, E., & López Nieto, J. M. (2019). 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