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Oxidation of glycerol with H_2O_2 on Pb-promoted Pd/γ-Al_2O_3 catalysts

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Chinese Journal of Catalysis 2016年第11期37卷 1982-1990页

作者： María L.Faroppa Juan J.Musci María E.Chiosso Claudia G.Caggiano Hernán P.Bideberripe josé L.García Fierro Guillermo J.Siri Mónica L.Casella 布宜诺斯艾利斯西北国立大学 CIBA(CIT UNNOBACONICET) 拉普拉塔国立大学科学学院 CINDECA(CCT La Plata-CONICETUNLP) 拉普拉塔国立大学工程学院PIDCAT 西班牙国家研究委员会(CSIC)催化与石油化学研究所

A series of bimetallic Pd-Pb catalysts with a constant Pd content of 1 wt%and Pb/Pd atomic ratio from 0 to 1.6 supported on γ-Al2O3 were prepared and used for glycerol oxidation with H2O2 as the oxidizing agent at atmospheric pressure,45℃ and pH =*** morphology and dispersion of the catalysts were characterized by scanning electron microscopy-energy dispersive X-ray spectroscopy（SEM-EDX） and transmission electron microscopy（TEM）.The presence of an alloy phase in the bimetallic catalyst was detected by X-ray photoelectron spectroscopy（XPS）.Glycerol conversion obtained with the monometallic Pd catalyst was 19%,which was increased to 100%with the addition of *** four bimetallic PdPb catalysts were able to oxidize glycerol to dihydroxyacetone（DIHA） and the selectivity to DIHA reached 59%,58%,34%and 25%for PdPb0.25,PdPb0.50,PdPb1.00 and PdPbl.60 catalysts,respectively.

关键词： Palladium Bimetallic palladium-lead catalyst Hydrogen peroxide Glycerol oxidation Glyceric acid Glycolic acid

Laser Polishing of Laser Powder Bed Fusion AlSi10Mg Parts—Influence of Initial Surface Roughness on Achievable Surface Quality

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Materials Sciences and Applications 2021年第1期12卷 15-41页

作者： Markus Hofele Andre Roth Jochen Schanz David K. Harrison Anjali K. M. De silva Harald Riegel Aalen University Aalen Germany Glasgow Caledonian University Glasgow UK

Laser Powder Bed Fusion (LPBF) is an Additive Manufacturing technique, which allows production of highly complex solid metal parts with good mechanical properties, compared to conventionally manufactured parts. Nevertheless, the layer-by-layer fabrication process also offers several disadvantages, including a relatively high surface roughness depending on the shape of the component, its position and orientation during the fabrication process. This paper deals with investigations on the surface roughness reduction capability, and residual surface structures by laser polishing of LPBF AlSi10Mg parts under varying initial surface roughness in order to investigate the influence of the surface behavior and initial surface roughness to the achievable surface quality by laser polishing. Hereto test specimens with varying fabrication orientations regarding to the built platform are printed and further polished. Thereby the initial arithmetic roughness varies between 19.2 μm and 8.0 μm. It could be shown that the achievable surface roughness by laser polishing with continuous and pulsed laser radiation is increasing with rising initial roughness, but the relative roughness reduction is almost constant in the range of 95% - 97.5%. The analyzation of the residual roughness structures shows, that the main roughness differences is found in the middle and long structure wavelength regime, which are directly depending on the initial surface structures of 3D printing.

关键词： Additive Manufacturing Surface Roughness Aluminium AlSi10Mg Laser Polishing Fabrication Orientation

Essential role of small bowel capsule endoscopy in reclassification of colonic inflammatory bowel disease type unclassified

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World Journal of Gastrointestinal Endoscopy 2017年第1期9卷 34-40页

作者： Sara Monteiro Francisca Dias de Castro Pedro Boal Carvalho Bruno Rosa Maria Joao Moreira Rolando Pinho Miguel Mascarenhas Saraiva josé Cotter Department of Gastroenterology Hospital da Senhora da Oliveira-Guimaraes ManopH-Endo-scopy and Digestive Motility Laboratory Portugal and CUF Institute School of Medicine University of Minho ICVS/3B’s PT Government Associate Laboratory

AIM To evaluate the role of small bowel capsule endoscopy(SBCE) on the reclassification of colonic inflammatory bowel disease type unclassified(IBDU).METHODS We performed a multicenter, retrospective study including patients with IBDU undergoing SBCE, between 2002 and 2014. SBCE studies were reviewed and the inflammatory activity was evaluated by determining the Lewis score(LS). Inflammatory activity was considered significant and consistent with Crohn's disease(CD) when the LS ≥ 135. The definitive diagnosis during follow-up(minimum 12 mo following SBCE) was based on the combination of clinical, analytical, imaging, endoscopic and histological *** Thirty-six patients were included, 21 females(58%) with mean age at diagnosis of 33 ± 13(15-64) years. The mean follow-up time after the SBCE was 52 ± 41(12-156) mo. The SBCE revealed findings consistent with significant inflammatory activity in the small bowel(LS ≥ 135) in 9 patients(25%); in all of them the diagnosis of CD was confirmed during follow-up. In 27 patients(75%), the SBCE revealed no significant inflammatory activity(LS < 135); among these patients, the diagnosis of Ulcerative Colitis(UC) was established in 16 cases(59.3%), CD in 1 case(3.7%) and 10 patients(37%) maintained a diagnosis of IBDU during follow-up. A LS ≥ 135 at SBCE had a sensitivity = 90%, specificity = 100%, positive predictive value = 100% and negative predictive value = 94% for the diagnosis of *** SBCE proved to be fundamental in the reclassification of patients with IBDU. Absence of significant inflammatory activity in the small intestine allowed exclusion of CD in 94% of cases.

关键词： Inflammatory bowel disease Inflammatory bowel disease type unclassified Capsule endoscopy Crohn’s disease Lewis score Reclassification

A novel supplement with yeast b-glucan, prebiotic, minerals and Silybum marianum synergistically modulates metabolic and inflammatory pathways and improves steatosis in obese mice

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Journal of Integrative Medicine 2021年第5期19卷 439-450页

作者： Victor Abou Nehmi Gilson Masahiro Murata Ruan Carlos Macêdo de Moraes Gabriely Cristina AlvesLima Danielle Araujo De Miranda Katrin Radloff Raquel Galvao Figuerêdo Costa Joyce de Cassia Rosade Jesus Jéssica Alves De Freitas Nayara Izabel Viana Ruan Pimenta Katia Ramos Moreira Leite joséPinhata Otoch Ana Flávia Marcal Pessoa Laboratory of Medical Investigation(LIM-26) Department of SurgeryUniversity of Sao Paulo Medical SchoolSao PauloSP 01246903Brazil Laboratory of Medical Investigation(LIM-29) Clinic Medical DepartmentUniversity of Sao Paulo Medical SchoolSao PauloSP 01246903Brazil Department of Physiology Escola Paulista de Medicina/Universidade Federal de Sao PauloSP 04023062Brazil Max Rubner-Institut Federal Research Institute of Nutrition and FoodKarlsruheBW 76131Germany Cancer and Inflammation Program Center for Cancer ResearchNational Cancer InstituteNational Institutes of HealthBethesdaMD 20892United States Laboratory of Medical Investigation(LIM-55) Urology DepartmentUniversity of Sao Paulo Medical SchoolSao PauloSP 01246903Brazil D'Or Institute for Research and Education RJ 22281-100Brazil Program in Anesthesiology Surgical Sciencesand Perioperative MedicineUniversity of Sao PauloSao PauloSP 01246903Brazil Brazilian Academic Consortium for Integrative Health(CABSIN) Natural Products CommitteeSao PauloSP 05449-070Brazil

Objective: To evaluate the synergic effects of a novel oral supplement formulation, containing prebiotics,yeast b-glucans, minerals and silymarin(Silybum marianum), on lipid and glycidic metabolism, inflammatory and mitochondrial proteins of the liver, in control and high-fat diet-induced obese ***: After an acclimation period, 32 male C57 BL/6 mice were divided into the following groups:nonfat diet(NFD) vehicle, NFD supplemented, high-fat diet(HFD) vehicle and HFD supplemented. The vehicle and experimental formulation were administered orally by gavage once a day during the last four weeks of the diet(28 consecutive days). We then evaluated energy homeostasis, inflammation, and mitochondrial protein expression in these groups of ***: After four weeks of supplementation, study groups experienced reduced glycemia, dyslipidemia,fat, and hepatic fibrosis levels. Additionally, proliferator-activated receptor-α, AMP-activated protein kinase-1α, peroxisome proliferator-activated receptor γ co-activator-1α, and mitochondrial transcription factor A expression levels were augmented;however, levels of inhibitor of nuclear factor-κB kinase subunit a and p65 nuclear factor-κB expression, and oxidative markers were reduced. Notably, the cortisol/C-reactive protein ratio, a well-characterized marker of the hypothalamic–pituitary–adrenal axis immune interface status, was found to be modulated by the ***: We discovered that the novel supplement was able to modify different antioxidant, metabolic and inflammatory pathways, improving the energy homeostasis and inflammatory status, and consequently alleviated hepatic steatosis.

关键词： Supplement Silymarin Prebiotic Obese Mice Steatosis Inflammation Mitochondrial biogenesis

Synthesis and PAMPA Permeability Assay of New Sulfonyl Hydrazone Derivatives

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Journal of Biosciences and Medicines 2019年第9期7卷 111-120页

作者： Luiz Felipe Schmitz de Souza Tiago Tizziani Larissa Sens Dalila Venzke Inê s Maria Costa Brighente Moacir Geraldo Pizzolatti Ricardo josé Nunes Laborató rio Estrutura e Atividade Departamento de Qu&iacute mica LEAT-CFM-UFSC Universidade Federal de Santa Catarina Campus Trindade Florian&oacute polis SC Brazil Laborató rio de Quí mica de Produtos Naturais Departamento de Qu&iacute mica LQPN-CFM-UFSC Universidade Federal de Santa Catarina Campus Trindade Florian&oacute polis SC Brazil

This work describes the synthesis of seven new sulfonyl hydrazones, which were proposed from the general structure of acyl hydrazones and 2,4-dinitrosulfonamides. Sulfonyl hydrazones are a class of compounds known to exhibit a wide range of biological activity. In this sense, the study of the pharmacokinetic properties of the bioactive molecules is of extreme importance;therefore, in this article the permeability of these compounds with in vitro PAMPA assay mimetizing the permeability through the gastrointestinal tract as well as lipophilicity through miLogP was investigated. All compounds presented good permeability results;it was possible to make a structure-activity relationship with the obtained results and a comparison between the results.

关键词： Sulfonyl Hydrazones PAMPA Permeability Organic Synthesis Medicinal Chemistry

Morphological and Optical Characterizations of CaAl2O4 Doped with Trivalent Praseodymium

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Journal of Chemistry and Chemical Engineering 2015年第8期9卷 514-516页

作者： Valeria Rejane silva Brito Raquel Jovita dos Santos Paulo Neilson Marques dos Anjos Severino Alves Junior Laboratory for Research and Innovation of Advanced Materials State University of Santa Cruz llheus Bahi 45662900 Brazil Department of Fundamental Chemistry Federal University of Pernambuco Recife Pernambuco 50670901 Brazil

This work was synthesized CaAl2O4 （calcium aluminate） doped with trivalent praseodymium ions. CaAl2O4 with praseodymium 1.0% and 0.5% were synthesized. The powders of aluminates were characterized by scanning electron microscopy and luminescence ***2O4, praseodymium ions, luminescence doped with praseodymium ion that showed less porosity in its grain structure and luminescent transitions that are dependent on the wavelengths of excitation and showing both types of transitions both 5d-4f and 4f-4f.

关键词： CaAl2O4 praseodymium ions luminescence

Radon exhalation from phosphogypsum stabilized in sulfur polymer cement

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Natural Science 2013年第5期5卷 646-652页

作者： Irene García-Diaz Francisco josé Alguacil Manuel Gázquez Juan Pedro Bolivar Israel López Coto Félix A. López Centro Nacional de Investigaciones Metalúrgicas (CENIM) CSIC Avda. Gregorio del Amo Madrid Spain Departamento de Física Aplicada Universidad de Huelva Campus del El Carmen Huelva Spain

Phosphogypsum (PG), primary by-product from phosphoric acid production, is accumulated in large stock-piles which were active until 2010, when spills were banned. It is considered as NORM material that contains radionuclides from 238U and decay series which are of most radiotoxicity. PG was valorized and/or recycled in a building material, sulfur polymer cement (SPC). The SPC-PG samples reach the international regulation to use in the manufacture of building materials without radiological restrictions, except the sample with the 50% of PG. Under normal conditions of ventilation the contribution to the expected radon indoor concentration is also below the international recommendation.

关键词： Radon Phosphogypsum NORM Radioactivity Sulfur polymer Cement

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明媚一隅葡萄牙某私人住宅

室内设计与装修 2020年第6期 74-79页

作者： [葡萄牙]Romeu Ribeiro joséPedro Marques 立夏(编译) 不详

现代住宅的设计由于受到时代特色、地域限制等因素的影响,呈现更加多元化的趋势。这栋位于葡萄牙吉马朗伊什市郊的别墅,作为一例精品范例,向人们展示了如何结合建筑用地的地形以及周边居住环境的特色,打造出属于业主的独一无二的居住空... 详细信息

现代住宅的设计由于受到时代特色、地域限制等因素的影响,呈现更加多元化的趋势。这栋位于葡萄牙吉马朗伊什市郊的别墅,作为一例精品范例,向人们展示了如何结合建筑用地的地形以及周边居住环境的特色,打造出属于业主的独一无二的居住空间。本案设计师经过勘察得出结论,这块地皮的周边建筑密集,处理好建筑和周围环境的关系非常重要。设计伊始,建筑师从住宅的私密性和高度两方面进行考量,将其设计成上下两层。

关键词：私人住宅周围环境现代住宅居住环境居住空间私密性建筑用地地域限制

Pathophysiological role and therapeutic implications of inflammation in diabetic nephropathy

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World Journal of Diabetes 2012年第1期3卷 7-18页

作者： Desirée Luis-Rodríguez Alberto Martínez-Castelao josé Luis Górriz Fernando de lvaro Juan F Navarro-González Grupo Espaol para el Estudio de la Nefropatía Diabética (GEENDIAB) Spain Nephrology Service and Research Unit University Hospital Nuestra Seora de Candelaria 38010 Santa Cruz de Tenerife Spain Nephrology Service Bellvitge University Hospital 08907 L’Hospitalet de Llobregat Spain Nephrology Service University Hospital Dr. Peset 46017 Valencia Spain Nephrology Service University Hospital Infanta Sofía 28702 Madrid Sapin

Diabetes mellitus and its complications are becoming one of the most important health problems in the world. Diabetic nephropathy is now the main cause of end-stage renal disease. The mechanisms leading tothe development and progression of renal injury are not well known. Therefore, it is very important to f ind new pathogenic pathways to provide opportunities for early diagnosis and targets for novel treatments. At the present time, we know that activation of innate immunity with development of a chronic low grade inflammatory response is a recognized factor in the pathogenesis of diabetic nephropathy. Numerous experimental and clinical studies have shown the participation of different inflammatory molecules and pathways in the pathophysiology of this complication.

关键词： Diabetes Diabetic nephropathy Innate immunity Inflammation Renal failure