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An Approach on the Hydrogen Absorption in Carbon Black after Gamma Irradiation

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Advances in Materials Physics and Chemistry 2013年第7期3卷 295-298页

作者： Antonio Madronero Mario Culebras Andres Cantarero Clara M.Gomez cesar mota Jose M.Amo Jose I.Robla Centro Nacional de Investigaciones Metalurgicas(CSIC) MadridSpain Instituto de Ciencia de los Materiales Universidad de ValenciaValenciaSpain

In this work, different samples of an industrial carbon black are used to study the hydrogen intake from an over pressurized atmosphere and its changes due to alteration of its level of crystallinity produced by γ-irradiation. The monitoring of the hydrogen adsorption was made by means of thermogravimetric analysis and by measurements of some electrical parameters as the Seebeck coefficient. X-ray diffraction shows that the irradiation diminishes the level of crystalline perfection. These results show interesting possibilities to use carbon black as cheap hydrogen absorbers.

关键词： Carbon Black Hydrogen Storage Carbon Semiconductor Seebeck’s Effect Gamma Irradiation

Antibiofilm and immunomodulatory resorbable nanofibrous filing for dental pulp regenerative procedures

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Bioactive Materials 2022年第10期7卷 173-186页

作者： Mauricio Gonçalves da Costa Sousa Gabriela Conceiçao de Almeida Danilo cesar Martins mota Rosiane Andrade da Costa Simoni Campos Dias Samuel Nunes Limberger Frank Ko Li Ting Lin Evan FHaney Hashem Etayash Beverlie Baquir Michael J.Trimble Ya Shen Zheng Su Markus Haapasalo Daniel Pletzer Letícia Chaves de Souza Glaucia Schuindt Teixeira Renato M.Silva Robert E.W.Hancock Octavio Luiz Franco Taia Maria Berto Rezende Post-Graduation Program in Genomic Sciences and Biotechnology Catholic University of BrasíliaBrasíliaBrazil Dentistry Course Catholic University of BrasíliaBrasíliaBrazil Post-Graduation Program in Health Sciences University of BrasíliaBrazil LIMA Chemistry InstituteUniversity of Brasília-UNBBrasíliaBrazil Animal Biology Department Campus Darcy RibeiroUniversidade de BrasíliaBrazil Department of Materials Engineering Faculty of Applied ScienceUniversity of British ColumbiaVancouverCanada Department of Microbiology and Immunology University of British ColumbiaVancouverBCCanada Department of Oral Biological and Medical Sciences Faculty of DentistryUniversity of British ColumbiaVancouverCanada Department of Microbiology and Immunology University of OtagoDunedinNew Zealand Department of Endodontics School of DentistryUniversity of Texas Health Science Center at HoustonHoustonUSA Department of Prosthesis Faculty of DentistryRio de Janeiro State UniversityRio de JaneiroBrazil Post-Graduation Program in Biotechnology Catholic University Dom BoscoCampo GrandeMato Grosso do SulBrazil

Multifunctional scaffolds with host defense peptides designed for regenerative endodontics are desirable nanobiotechnological tools for ***,different scaffolds were tested for use during the pulp revascularization process,including poly(vinyl alcohol)-PVA hydrogels or resins,collagen hydrogels and poly(vinyl alcohol)PVA/Chitosan(PVA/CS)*** on time to degradation(21 days),nanofibers were chosen to be incorporated with ciprofloxacin and IDR-1002(each at 50 mg/g).Nanofibers containing ciprofloxacin and IDR-1002 had anti-biofilm activity against Enterococcus faecalis,Staphylococcus aureus and a multispecies oral biofilm,besides anti-inflammatory *** in vivo subcutaneous tissue response to tooth fragments filled with nanofibers demonstrated a pulp-like tissue formation,when compared to empty teeth ***,we designed a strong antimicrobial,immunomodulatory and regenerative candidate for pulp revascularization and regeneration procedures.

关键词： Regenerative endodontics Scaffolds Nanofibers Host defense peptides Ciprofloxacin IDR-1002

Mining Contribution to Municipalities Development

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Journal of Environmental Science and Engineering(B) 2017年第8期6卷 436-442页

作者： Jose Aroudo mota Jose Emanoel de Carvalho Nazairio Jorge Filipe dos Santos Jose oswaldo Siqueira Paulo cesar Horta Moreira ITV(Vale Institute of Technology) Belem 66055-090Brazil Ferrosos Norte Vale S.A.Parauapebas 68515-000Brazil

Mining activity in Brazil has significantly contributed to the country ***,this contribution is not always fully noticed by *** study aims to bring more evidence to this mining activity contribution,based on highly regarded development indicators,such as the HDI(Human Development Index),created by the UNDP(United Nations Development Programme).The HD1 was traditionally designed as an instrument to evaluate the degree of countries development and was subsequently deployed to states and municipalities(IDHM(Municipal Human Development Index)for Brazilian municipalities).In addition to lDHM released by the UNDP,FIRJAN(Federation of the Industries of the State of Rio de Janeiro)developed its own IFDM(FIR JAN Municipal Development Index).The statistical analysis shows that the average of the municipalities with mining activities has superior development indices than those with non-mining activities,especially in the two major mining states:Minas Gerais and Parfi.

关键词： Mineral activity human development 1DHM(Municipal Human Development Index) IFDM(F1RJAN MunicipalDevelopment Index).

Socio-Economic Profile of People with Disabilities: A Health Impact

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Health 2015年第5期7卷 633-638页

作者： Paula Marciana Pinheiro de Oliveira Monaliza Ribeiro Mariano Lorita Marlena Freitag Pagliuca Jacqueline mota da Silva Paulo cesar de Almeida Giselly Oseni Barbosa Oliveira Department of Nursing Universidade da Integracao Internacional da Lusofonia Afro-Brasileira Fortaleza Brazil Department of Nursing Universidade Federal do Ceará Fortaleza Brazil Department of Nursing Universidade Estadual do Ceará Fortaleza Brazil

The objective was to compare the socioeconomic profile and the repercussions for effects on the health of people with physical, hearing and visual of the main Ceará state associations in Brazil. Quantitative study carried out from March to August 2012 through a structured questionnaire with 120 subjects. Variables were: gender, age, education, family income and marital status. Studies are necessary to examine the effects of sociodemographic characteristics on health. The results indicate that the three deficiencies have different distributions in all age groups (p = 0.001), and auditory and visual obtained the highest percentage in the age group of 18 - 29 years (67.5% and 40%, respectively), while motor in the range of 30 - 49 (60%), if no association between level of education and disability was found (p = 0.553). Family income showed a statistically significant difference between disability (p = 0.044), with lower income in hearing loss (45%) and higher in the visual (42.5%). Studies have demonstrated that people with disabilities are not homogeneous. It is important to examine socioeconomic indicators, and individual needs and characteristics to plan effective action.

关键词： Disabled Persons Health Promotion Nursing

The role of green manure nitrogen use by corn and sugarcane crops in Brazil

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Agricultural Sciences 2013年第12期4卷 89-108页

作者： Edmilson José Ambrosano Heitor Cantarella Gláucia Maria Bovi Ambrosano Fábio Luis Ferreira Dias Fabrício Rossi Paulo cesar Ocheuze Trivelin Takashi Muraoka APTA Regional Center South PolePiracicabaBrazil APTA Agronomic Institute of Campinas(IAC)CampinasBrazil Department of Social Dentistry State University of Campinas(UNICAMP)PiracicabaBrazil College of Animal Science and Food Engineering University of São Paulo(USP)PirassunungaBrazil Center for Nuclear Energy in Agriculture(CENA/USP) PiracicabaBrazil

Three assays were developed from April 3, 1995 to October 10, 2005. The work with corn was conducted in a greenhouse, using velvet bean (Mucuna aterrima) and sunn hemp (Crotalaria juncea) as green manure with 15N labeling of either shoots or roots, in two soils with contrasting textural classes. The mineralization of N from legume plants incorporated into the two soils was investigated too. This work included two green manures: velvet bean and sunn hemp, and the common bean (Phaseolus vulgaris) residues. Nitrogen from the velvet bean accounted for a greater proportion of the soil inorganic N;shoots were responsible for most of N accumulated. Common bean residues caused immobilization of inorganic N. The leguminous species added were intensively and promptly mineralized, preserving the soil native nitrogen. One hundred days after emergence of the corn, velvet bean provided higher accumulation of nitrogen in the soil, higher absorption by corn plants and accumulation in the aerial part. The green manure decomposition was more intense in the medium textured soil. In this soil, highest nitrogen losses were also observed. The sugarcane (Saccharum spp.) was cultivated for five years in the field and was harvested three times;15N recovery was evaluated in the first two harvests. The combination of inorganic fertilizer and green manure resulted in higher sugarcane yields than either N source applied separately;however, in the second cutting the yields were higher where sunn hemp was used than in plots with ammonium sulfate. The recovery of N by the first two consecutive harvests accounted for 19% to 21% of the N applied as sunn hemp and 46% to 49% of the N applied as ammonium sulfate. Very little inorganic N was present in the 0-40 cm soil layer with both N sources.

关键词： Saccharum spp. Biological Nitrogen Fixation 15N Isotope Technique N-Mineralization Mineral Nitrogen