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Rare earth metal as a dopant element:Cerium ion as an articulator in hexavalent chromium removal by magnetic iron oxides

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Journal of Rare Earths 2023年第10期41卷 1616-1626,I0006页

作者： Pricila Maria Batista Chagas Maísa M.M.Lima Aline Aparecida Caetano Lucas Bragança Carvalho nayra Maria de Abreu Piva Maria Eduarda Resende Luiz Iara do Rosário Guimarães Laboratory of Environmental Catalysis and New Materials Department of ChemistryFederal University of LavrasCEP 37200-900LavrasMGBrazil Department of Viticulture&Enology University of CaliforniaDavisCA95616USA Institute of Science and Technology São Paulo State University18087-180SorocabaBrazil

This study highlights introducing the rare earth metal cerium(Ce(Ⅳ))into the structure of magnetite(Fe_(3)O_(4))to achieve enhanced adsorptive properties for the removal of chromium(Cr(VI))from an aqueous *** ratios of Ce(Ⅳ)were introduced into the iron oxide matrix,termed FeCe-5,FeCe-10,and *** numerical values correspond to the nominal content of the dopant element added to the synthesis *** solid materials were characterized for morphology and chemical structure,and N_(2)physical adsorption/desorption measurements were *** solid materials doped with Ce(IV)have a high surface area compared to Fe_(3)O_(4),and the solid material with the highest content of the dopant ion(Ce(IV))has a 4-fold greater surface *** increase in the dopant content in the iron oxide structure leads to a total chromium removal of 93.3%.Isotherms studies on the solid materials show that chromium adsorption follows the Langmuir *** adsorption capacity to Fe_(3)O_(4)is 12.59 mg/g and FeCe-10 is 22.49 mg/g at 35℃.By fitting the kinetic and isothermal models,it is found that for the Fe_(3)O_(4)and FeCe-10 materials Cr(VI)removal occurs in very different ways,attributed to the different surface areas and compositions of the oxide,with the formation of the goethite(α-FeOOH)*** FeCe-10reuse process was performed and the removal capacity the Cr(VI)is reduced after the first *** result is attributed to a strong and irreversible adsorption of Cr(VI)on the FeCe-10.

关键词： Bimetallic oxides Fe-Ce interaction Oxygen vacancies Adsorption Cr(Ⅵ) Rare earths

Caloric Restriction and Litter Size Do Not Compromise Renal Function of Male Wistar Rats

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Journal of Pharmacy and Pharmacology 2018年第4期6卷 362-369页

作者： nayra Thais Delatorre Branquinho Leticia Diniz Crepaldi Vilma Aparecida Ferreira de Godoi Maria Montserrat Diaz Pedrosa Edmara Aparecida Baroni Graduation (PhD.) in Cell and Molecular Biology State University of Matinga Matinga 87020-900 Brazil Graduation (Msc.) in Cell and Molecular Biology State University of Maringa Maringa 87020-900 Brazil Associate Professor Department of Physiological Sciences State University of Maringa Maringa 87020-900 Brazil

This work had the purpose of comparing some renal parameters of Wistar rats raised in small litters either freely-fed （G3L） or subjected to 30% caloric restriction （G3R） with those of rats from normal litters （Gg） at the age of 90 days. The results showed that the relative weight of the kidneys and urinary flow were not significantly different. All the groups had GFR （glomerular filtration rate） and proteinuria within normal values, despite group G3R having values statistically lower. However, group G3R had diminished glomerular area and increased numbers of renal corpuscles. Group G3L did not exhibit differences compared with controls （G9）. The effects of caloric restriction did not compromise kidney structure and function in 90-day-old rats.

关键词： Small litter caloric restriction rat renal morphology renal physiology.

Effect of Interaction Phenolic Compounds with Milk Proteins on Cell Line

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Food and Nutrition Sciences 2014年第22期5卷 2130-2146页

作者： nayra Shaker Mehanna Zakaria Mohamed Rezk Hassan Hala Mohamed Faker El-Din Ali Abd-Elaziz Ali Ryszard Amarowicz Tamer Mohammed El-Messery Dairy Science &Technology Department National Research Center Dokki Egypt Food Science Department Faculty of Agriculture Ain Shams University Cairo Egypt Institute of Animal Reproduction and Food Research of Polish Academy of Sciences Division of Food Science Olsztyn Poland

Plant flavonoids are polyphenolic compounds, commonly found in vegetables, fruits and many food sources that form a significant portion of our diet. These compounds act as anticancer and anti-proliferative but after interaction with milk proteins they form complexes which become less effective than these compounds alone. Investigation has been conducted to delineate the action of some phenolic compounds of natural origin and complexes formed from interactions between phenolic compounds and milk proteins in three human tumors cell lines: Breast (MCF7), Liver (HePG2) and colon (HCT116), these interactions were studied by fourier transform infrared spectroscopy (FTIR). Phenolic compounds have positive effect on human cancer cell lines but after interaction with milk protein and forming complexes, they become less effective than phenolics and some time have negative effect and become pro-cancer;this interaction can be studied by (FTIR) to know which groups do this complex. The spectra were recorded under conditions generally applied in quantitative work. IR spectra were recorded in the region from 4000 - 250 cm–1, but the bands in the region 4000 - 1400 cm–1 were analyzed in detail, since they are characteristic of OH groups while NH groups appeared at (3000 - 4000 cm–1) of various protonic species that undergo hydrogen bonding interaction. Another region of interest was the region from 1800 - 1400 cm–1, characteristic of the bending vibrations of the same group. Since the bands in this region were wide and complex.

关键词： Phenolic Compounds Protein Interaction and Human Cell Line

Failure in Fuel Injector Nozzles Used in Diesel Engines

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Journal of Mechanics Engineering and Automation 2015年第4期5卷 237-240页

作者： Jose Costa de Macedo Neto Marina Anunciacao Brito de Oliveira Eduardo Rafael Barreda del Campo Ricardo Wilson Aguiar Da Cruz nayra Reis do Nascimento Joao Evangelista Neto Department of Materials Engineering School of Engineering Amazonas State University Manaus 69065-020 Brazil Department of Mechanical Engineering School of Engineering Amazonas State University Manaus 69065-020 Brazil Department of Materials Engineering and Bioprocess Faculty of Chemical Engineering University of Campinas Sao Paulo13083-852 Brazil Department of Electrical Engineering Faculty of Technology University Federal of Amazonas Manaus 69077-000 Brazil

This paper aims to conduct a study of the problems associated with the wear of the needles and fuel injection nozzles utilized in diesel engines. The wear found on the needles is mainly associated to impurities in the fuel oil and microcavitation occurred due to high pressure in the phase of the air compression for combustion of the combustible fluid. These pressures associated with the temperature and the fluid velocity results in the occurrence of vaporization, which releases shock waves that cause damage to the affected surface. The impurities solid particles from the fuel oil cause problems inside the nozzles as obstruction of the holes and wear on the needle tip and nozzle seat surface. These failures affect in the atomization of the fuel, since the deterioration of the internal passages of the nozzles interferes in the spray formation and in the end passage of the fluid. For the execution of this study it will be used digital microscopic analysis in specimens that suffered damage, in order to investigate the effects of fuel property, and the temperature conditions and pressure in the formation of the wear on the needles and injector nozzle.

关键词： Fuel injector nozzle injector needles wear.

Rat Hepatocyte Glucose Metabolism Is Affected by Caloric Restriction but not by Litter Size Reduction

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Journal of Pharmacy and Pharmacology 2017年第7期5卷 408-415页

作者： nayra Thais Delatorre Branquinho Gabriel Henrique de Paula Cruz Arielle da Cunha Silvéio Leticia Diniz repaldi Lais Akemi Yamada Isabela Ramos Mariano Vilma Aparecida Ferreira de Godoi Maria ontserrat Diaz Pedrosa Program of Graduate Studies in Biological Sciences State University of Maringá Maringá 87020-900 Brazil Undergraduation in Biological Sciences State University of Maringá Maringá 87020-900 Brazil Undergraduation in Biotechnology State University of Maringá Maringá 87020-900 Brazil Department of Physiological Sciences State University of Maringá Matingá 87020-900 Brazil

This work aimed at investigating whether the liver glucose metabolism could have a role in any change of glucose homeostasis that might exist in the reduced-litter rat at the age of 60 days. Additionally, post-weaning caloric restriction and its hepatic effects were explored, as this intervention is reported as a useful measure against obesity and its related disturbances. The animals were raised in litters of nine （control, CG） or three pups during lactation. These small-litter pups were FG （fed freely） or subjected to 30% RG （caloric restriction） after weaning until 60 days of age. The increased adiposity induced by lactational overfeeding was not reversed by caloric restriction. Hepatocyte glucose metabolism and glucose tolerance test were not affected by litter size, but caloric restriction increased liver basal glucose release, diminished gluconeogenesis and retarded the glycemic decay during the insulin tolerance test. Liver glucose metabolism of young adult rats was not affected by lactational overfeeding. Up to this age, however, moderate caloric restriction had a potent influence that might compromise whole-body glucose homeostasis and prompt to insulin resistance.

关键词： Small litter caloric restriction glucose metabolism rat liver.

Responses of the Adult Rat Glucose Metabolism to Early Life Feeding, Caloric Restriction and Refeeding

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Journal of Pharmacy and Pharmacology 2018年第4期6卷 370-379页

作者： nayra T. D. Branquinho Monica S. M. Loiola Leticia D. Crepaldi Lais A. Yamada Silvia C. S. F. Azevedo Camila Bataglini Marcia N. Brito Vilma A. F. de Godoi Maria Montserrat D. Pedrosa Maria Raquel M. Natali Program of Graduate Studies in Cell and Molecular Biology State University of Maringa Maringa 87020-900 Brazil Program of Graduate Studies in Physiological Sciences State University of Maringa Maringa 87020-900 Brazil Department of Physiological Sciences State University of Maringa Maringa 87020-900 Brazil Department of Morphological Sciences State University of Maringa Maringa 87020-900 Brazil

Early life overfeeding in the rat can be experimentally induced by reducing litter size. This investigation assessed the consequences of this manipulation on glucose metabolism in vivo and in isolated hepatocytes in 150-day old rats. Additionally, after body growth, the effects of caloric restriction and refeeding were tested. Adult rats from control （G9） and reduced litters （G3L） did not differ in body and fat weights, glucose tolerance or insulin resistance （insulin-induced hypoglycemia）, or hepatocyte glucose release under basal or gluconeogenic conditions. Caloric restriction （G3R） reduced body and fat weights, decreased glucose decay after insulin injection and decreased hepatocyte gluconeogenic glucose release. Refeeding after caloric restriction reversed these parameters to those of the freely-fed groups （G9 and G3L）. Taken together, these results suggest that the liver glucose metabolism is not programmed by lactational overfeeding, but rather is responsive to the current nutritional condition of the animal.

关键词： Glucose homeostasis metabolic programming reduced litter caloric restriction refeeding.

Glutamine or Glutamine Dipeptide Supplementation Improves Gluconeogenesis and Liver Glycogenosis in Type 1 Diabetic Rats

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Journal of Pharmacy and Pharmacology 2019年第7期7卷 398-407页

作者： Silvia Carla S.F.Azevedo Carlos Vinicius D.da Rosa Ana Luiza M.Wunderlich Laís A.Yamada Isabela R.Mariano Camila Bataglini nayra T.D.Branquinho Scarlett R.Raposo Roberto B.Bazotte Edmara A.Baroni Maria Raquel M.Natali Maria Montserrat D.Pedrosa Vilma A.F.de Godoi Program of Graduate Studies in Cell and Molecular Biology State University of MaringáMaringá87020-900Brazil Program of Graduate Studies in Physiological Sciences State University of MaringáMaringá87020-900Brazil Undergraduation in Biological Sciences University Center of MaringáMaringá87050-390Brazil Department of Pharmacology and Therapeutics State University of MaringáMaringá87020-900Brazil Department of Physiological Sciences State University of MaringáMaringá87020-900Brazil Department of Morphological Sciences State University of MaringáMaringá87020-900Brazil

The effects of the supplementation with L-glutamine(GLN)or L-alanyl-L-glutamine(GDP)on the progression of the systemic and hepatic metabolic status of rats having untreated type 1 diabetes mellitus(T1DM)were *** Wistar diabetic rats(streptozotocin,60 mg/kg)were allotted to four groups supplemented by gavage for thirty days as follows:control and diabetic receiving saline;diabetic receiving GLN(248 mg/kg);and diabetic receiving GDP(400 mg/kg).Body weight,plasmatic parameters and kidney function were *** hepatocytes were used to assess gluconeogenic *** and kidney were used for morphological analyses.T1DM decreased the number and increased the area of the hepatocytes,possibly because of the observed enlargement of glycogen *** weight,glomerular area and proteinuria increased,and glomerular filtration rate decreased,in non-supplemented T1DM *** area and proteinuria were reversed by both *** T1DM hepatocytes released less glucose,which could have been diverted to glycogen synthesis and secondary glycogenosis observed in T1DM;this was partially reversed by the *** results point to a possible beneficial effect of glutamine on the metabolic and hepatic impairments of T1DM.

关键词： Type 1 diabetes mellitus L-glutamine glutamine dipeptide gluconeogenesis glycogenosis