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Navegação Livros - Capítulos por tipo de publicação "Capítulo de livro"

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  • IPEN-DOC 21188

    ALY, O.F. ; MATTAR NETO, M. . Stress corrosion cracking. In: ALIOFKHAZRAEI, MAHMOOD (Ed.). Developments in Corrosion Protection. InTech: Open Access, 2014. p. 65-80,

    Notas de conteúdo: Chapter 4

    Palavras-Chave: stress corrosion; corrosion fatigue; crack propagation; cracking; pwr type reactors; failures

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  • IPEN-DOC 14401

    ORLANDO, M.T.D.; CORREA, H.P.S.; MARTINEZ, L.G. . Strutural study of lanthanum oxysulfate (LaO)sub(2)SOsub(4). In: . Activity Report 2007. LNLS: Campinas, 2007, 2007.

    Palavras-Chave: lanthanum sulfates; oxysulfides; synchrotrons; x-ray diffraction

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  • IPEN-DOC 18012

    DURAZZO, M. ; RIELLA, H.G.. Studies on the Sintering Behaviour of UOsub(2)-Gdsub(2)Osub(3) Fuel Pellets. In: INTERNATIONAL ATOMIC ENERGY AGENCY (Ed.). Advanced fuel pellet materials and fuel rod design for water cooled reactors. International Atomic Energy Agency, 2010, 2010. p. 35-53,

    Notas de conteúdo: IAEA-TECDOC-CD-1654

    Palavras-Chave: burnable poisons; nuclear fuels; fabrication; fuel pellets; uranium oxides; gadolinium oxides; sintering

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  • IPEN-DOC 04699

    RIBELA, M.T.C.P. ; PERONI, C.N. ; BARTOLINI, P. . Study of antibody immobilization on different magnetic particles utilized for the radioimmunoassay (RIA) and immonoradiometric assay (IRMA) of hormones. In: INTERNATIONAL ATOMIC ENERGY AGENCY (Ed.). Antibodies immobilized on magnetic particles for radioimmunoassay and immunoradiometric assay of hormones. Vienna: IAEA, Nov. 1996, 1996.

    Notas de conteúdo: Final report of a co-ordinated research programme 1991-1995

    Palavras-Chave: antibodies; particles; radioimmunoassay; immunoassay; radioassay; hormones

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  • IPEN-DOC 26703

    CARDOSO, ELIZABETH C.L. ; PARRA, DUCLERC F. ; SCAGLIUSI, SANDRA R. ; SALES, RICARDO M. ; CAVIQUIOLI, FERNANDO ; LUGAO, ADEMAR B. . Study of bio-based foams prepared from PBAT/PLA reinforced with bio-calcium carbonate and compatibilized with gamma radiation. In: ALMAYAHI, BASIM (Ed.). Use of Gamma Radiation Techniques in Peaceful Applications. London, UK: IntechOpen, 2019. p. 1-17, cap. 9. DOI: 10.5772/intechopen.85462

    Abstract: Foamed polymers are future materials, considered “green materials” due to their properties with very low consumption of raw materials; they can be used to ameliorate appearance of structures besides contributing for thermal and acoustic insulation. Nevertheless, waste disposal has generated about 20–30% of total of solid volume in landfills besides prejudicing flora and fauna by uncontrolled disposal. The development of biodegradable polymers aims to solve this problem, considering that in 2012, bio-plastics market was evaluated in 1.4 million tons produced and in 2017 attained 6.2 million tons. Biodegradable polymers as poly(lactic acid) (PLA) and poly(butylene adipate-co-terephthalate) (PBAT) are thermoplastics which can be processed using the most conventional polymer processing methods. PLA is high in strength and modulus but brittle, while PBAT is flexible and tough. In order to reduce interfacial tension exhibited by PLA/PBAT blends, it was used as compatibilizing agent 5 phr of PLA previously gamma-radiated at 150 kGy. Ionizing radiation induces compatibilization by free radicals, improving the dispersion and adhesion of blend phases, without using chemical additives and at room temperature. As a reinforcement agent, calcium carbonate from avian eggshell waste was used, at 10 ph of micro particles, 125 μm. Admixtures were further processed in a singlescrew extruder, using CO2 as physical blowing agent (PBA). Property investigations were performed by DSC, TGA, XRD, SEM, FTIR, and mechanical essays.

    Palavras-Chave: butenes; gamma radiation; eggs; shells; compatibility; polymers

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  • IPEN-DOC 24660

    POVEDA, PATRICIA N.S. ; MOLARI, JULIANA A.; BRUNELLI, DEBORAH D.; SILVA, LEONARDO G.A. e . Study of different process additives applied to polypropylene. In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); FIRRAO, DONATO (Ed.); BROWN, ANDREW (Ed.); BAI, CHENGUANG (Ed.); PENG, ZHIWEI (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); GOSWAMI, RAMASIS (Ed.); KIM, JEONGGUK (Ed.). Characterization of Minerals, Metals, and Materials. TMS. Cham, CZ, Switzerland: Springer International Publishing AG, 2018. p. 661-667, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-319-72484-3_70

    Abstract: There are several additives aimed on improving the processing characteristics as well as mechanical properties of the plastic materials. Being polypropylene is one of the main polymers used in the plastic processing industry due to its easy processability and application versatility, was chosen as the base resin for this study. Additives can aid the processing of polypropylene, either by promoting a better slip between the chains (lubricants), or by contributing to nucleation and crystallinity (nucleating). In this study, the raw materials copolymer polypropylene, lubricant (internal and external action), organic nucleating agent (metallic salt) and inorganic nucleating agent (metallic oxide) were considered. Mechanical tensile tests, Charpy impact and spiral flow to verify melt index were performed to characterize the samples with additives and standard (copolymer polypropylene). The interference of these additives with polymeric matrix was observed.

    Palavras-Chave: polypropylene; plastics; lubricants; additives; nucleation; crystallization

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  • IPEN-DOC 25260

    CARVALHO FILHO, E.T.; MEDEIROS, J.T.N.; MARTINEZ, L.G. ; PINTO, V.C.. Study of error analysis and sources of uncertainty in the measurement of residual stresses by the X-Ray diffraction. In: SEEFELDT, MARC (Ed.). Residual Stresses. Millersville, PA, USA: Materials Research Forum LLC, 2018. p. 75-80, v. 6, (Materials Research Proceedings). DOI: 10.21741/9781945291890-13

    Abstract: The aim of this work is to analyze the sources of errors inherent to the residual stress measurement process by X-ray diffraction technique making an interlaboratory comparison to verify the reproducibility of the measurements. For this work were machined specimens with grinding finish, with polishing finish and to be a reference standard an iron powder was used To verify the deviations caused by the equipment, those specimens were positioned and with the same analysis condition, seven measurements were carried. To verify sample positioning errors, seven measurements were performed by positioning the sample at each measurement. To check geometry errors, measurements were repeated for the geometry Bragg Brentano and Parallel Beams. In order to verify the reproducibility of the method, the measurements were performed in two different laboratories and equipments. The results were statistically worked out and the quantification the type A errors that suggests that is a significant difference between the methods and orientation of grooves directions.

    Palavras-Chave: residual stresses; x-ray diffraction; measuring methods

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  • IPEN-DOC 25020

    CARDOSO, ELIZABETH C.L. ; OLIVEIRA, RENE R. ; MACHADO, GLAUSON A.F. ; MOURA, ESPERIDIANA A.B. . Study of flexible films prepared from PLA/PBAT blend and PLA E-beam irradiated as compatibilizing agent. In: IKHMAYIES, SHADIA (Ed.); LI, BOWEN (Ed.); CARPENTER, JOHN S. (Ed.); LI, JLAN (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); FIRRAO, DONATO (Ed.); ZHANG, MINGMING (Ed.); PENG, ZHIWEI (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); BAI, CHENGUANG (Ed.); KALAY, YUNUS E. (Ed.); GOSWAMI, RAMASIS (Ed.); KIM, JEONGGUK (Ed.). Characterization of Minerals, Metals, and Materials. Gewerbestrasse, Switzerland: Springer International Publishing AG., 2017. p. 121-129, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-319-51382-9_14

    Abstract: Plastics global annual production exceeds 250 million tons and more than 40% of the total plastic production is used as packaging materials. In recent years polymeric materials derived from biomass have received great attention due to scarce petroleum resources and environmental concerns. PLA is one of the most extensively studied bio-based and bio-compostable aliphatic polyesters; nevertheless, high brittleness and low toughness limits its application. Blending PLA with PBAT (Poly(butylene adipate-co-terephthalate)), an aliphatic-aromatic copolyester, was the solution found due to its high toughness and biodegradability. Differences between PLA and PBAT solubility parameter values lead to the formation of immiscible blends as well as reduction in their mechanical performance besides a poor morphology; so, 5% of pre-irradiated PLA and a previous compatibilized PLA/PBAT (EcovioTM) were added to PLA/PBAT blends in order to improve miscibility phases. Investigations were accomplished on phase morphology (SEM), mechanical properties, thermal behavior and X-ray diffractions (XRD).

    Palavras-Chave: lactic acid; polymers; butenes; electron beams; plastics; biodegradation

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  • IPEN-DOC 23566

    POVEDA, PATRICIA N.S. ; SILVA, LEONARDO G.A. . Study of synergistic effect of light stabilizer additive, conventional and nanoparticles, applied to polyethylene films submitted to ultraviolet radiation. In: IKHMAYIES, SHADIA (Ed.); LI, BOWEN (Ed.); CARPENTER, JOHN S. (Ed.); LI, JIAN (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); FIRRAO, DONATO (Ed.); ZHANG, MINGMING (Ed.); PENG, ZHIWEI (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); BAI, CHENGUANG (Ed.); KALAY, YUNUS E. (Ed.); GOSWAMI, RAMASIS (Ed.); KIM, JEONGGUK (Ed.). Characterization of Minerals, Metals, and Materials. Springer International Publishing, 2017. p. 777-785, (The Minerals, Metals & Materials Series).

    Abstract: Thermoplastic materials are sensitive to ultraviolet radiation (UV), which can cause structural changes, causing variation in mechanical properties and appearance. UV range between 250 and 400 nm is considered the most aggressive to polymers, and prolonged exposure to it results in breakage and/or crosslinking chains. Light stabilizer additives, blockers or absorbers are added to the polymers for protection in order to extend the life of the final product. The choice of the adequate light stabilizer additive system depends on factors such as resin final application, thickness, geographic location of exposure, presence of fillers in the composition, contact with chemicals, among others. This study evaluates different additive systems: conventional organic, inorganic nanotechnologyc base and the synergy between them when applied to polyethylene considering carbonyl index and UV/VIS results after aging by QUV chamber.

    Palavras-Chave: polyethylenes; nanoparticles; ultraviolet radiation; stability; aging

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  • IPEN-DOC 25632

    MIRANDA, LEILA F.; GOMES, PAULO V.C.; ALMEIDA, FABIO J.M. de; SILVA, LEONARDO G.A. e ; MUNHOZ JUNIOR, ANTONIO H.; MASSON, TEREZINHA J.. Study of the electrical properties of rGO obtained by different GO reduction methods. In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 773-785, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_78

    Abstract: Thiswork aimed at the synthesis of graphene oxide (GO) and its reduction in reduced graphene oxide (rGO), as well as the characterization of the obtained GO and of each of the products of the various GO reduction methods. The characteristics of the GO and rGO samples were compared in order to study the results for each reduction method. Graphene oxide was synthesized, from the modified Hummers methodology, using powdered graphite and subsequently reduced to rGO by different methods (chemical method: reduction with hydrazine and carbon–C-dots nanoparticles, and physical: ultrasound). The samples obtained from graphene oxide and reduced graphene oxide were characterized electrically and microstructurally. The results showed that the samples of GO reduced with hydrazine were those that obtained the best results of conductivity and good restructuring of the sp2 hybridization, followed by the carbon nanoparticles and ultrasound.

    Palavras-Chave: graphene; oxides; electric conductivity; reduction

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  • IPEN-DOC 25633

    POVEDA, PATRICIA N.S. ; SILVA, LEONARDO G.A. e . Study of the influence of organic peroxide and elastomeric modifier in the mechanical and flow properties of the recycled polypropylene. In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 787-792, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_79

    Abstract: Plastics have been replacing other traditional materials such as wood, metal and glass over the past decades due to its versatility in properties, processability, and cost. Polypropylene can be highlighted as one of the main thermoplastics used in industry since it presents properties suitable for various applications, combining density, cost, availability, and ease of molding. By considering the mechanical recycling of post-consumer or post-industrial material, difficulty in flowability is observed, which demands modification to promote processability. This work used the traditional solution for flow modification (peroxide) and elastomeric modifier to evaluate the impact of these additives on the mechanical and flow properties of recycled polypropylene by tensile strength, melt index and spiral flow analyses. Although the modified sample with organic peroxide had a higher melt flow index, the mechanical resistance was lower than the elastomeric modifier, which showed good performance in the material flow during processing according to spiral flow analysis.

    Palavras-Chave: polypropylene; elastomers; peroxides; modifications; polymers

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  • IPEN-DOC 21796

    SILVA, LEANDRO C. da; COUTO, ANTONIO A. ; BALDAN, RENATO ; VATAVUK, JAN. Study of the utilization of polyamide composite with fiberglass reinforcement in automotive engine mounts. In: OSCHSNER, A. (Ed.); ALTENBACH, H. (Ed.). Mechanical and materials engineering of modern structure and component design. Switzerland: Springer International Publishing, 2015. p. 71-83, (Advance Structure Materials, 70).

    Palavras-Chave: polyamides; composite materials; fiberglass; fatigue; aluminium; weight; fatigue; automobiles

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  • IPEN-DOC 27104

    SANTOS, G.A. dos; FIGUEIREDO, W.; SCHMITT, Y.P.; NASCIMENTO, M.S.; MIRANDA, F.; BATALHA, G.F.; COUTO, A.A. . Study on closed-die forging in stainless steel as standard ASTM F138 in grain size function. In: ÖCHSNER, ANDREAS (Ed.); ALTENBACH, HOLM (Ed.). Engineering Design Applications II: Structures, Materials and Processes. Cham, Switzerland: Springer Nature Switzerland, 2020. p. 133-153, (Advanced Structured Materials, 113). DOI: 10.1007/978-3-030-20801-1_10

    Abstract: Forging is a bulk deformation process in metal working commonly employed in the manufacture of metallic materials prostheses. Depending on the compressive loads applied to the material, structures (grain sizes) are formed which increase its strength. By forging an ASTM F138 stainless steel, the heating of material in a suitable temperature is of fundamental importance to be formed without the presence of folds arising from the process and as a result we can obtain a proper microstructure. This work aims to define the accurate temperature in relation to the strain rate applied in the hot die forging process. Besides, it is used a closed-die forging in which cavity has different thickness that stimulates the profile of an orthopedic plate. Four ranges of temperature used in the process vary between 1000 and 1200 °C, with a strain rate ranging from 400 to 600 s−1.Results demonstrate that there is a transitional temperature close to 1050 °C, where temperatures of 1000–1040 °C provide satisfactory grain size and temperatures of 1100 and 1200 °C, showed limitations in grain size, greater than those recommended by ASTM F 621.

    Palavras-Chave: stainless steels; standardization; forging; grain size; strain rate; austenitic steels

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  • IPEN-DOC 25620

    ZAFALON, ANGELICA T. ; JUVINO, VINICIUS dos S. ; KOMATSU, LUIZ G.H. ; PARRA, DUCLERC F. ; LUGAO, ADEMAR ; SAMUEL, TEMESGEN; RANGARI, VIJAYA. Synthesis and characterization of PVP/CaCO3-Ag blend hydrogel by gamma irradiation: study of drug delivery system and antimicrobial activity. In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); BAI, CHENGUANG (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); SPENA, PASQUALE R. (Ed.); GOSWAMI, RAMASIS (Ed.). Characterization of Minerals, Metals, and Materials. Cham, CZ, Switzerland: Springer Nature Switzerland AG, 2019. p. 255-265, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-030-05749-7_26

    Abstract: Chronic wounds are skin injuries with failed healing. They have become a public health problem that affects more than 2% of the population and the presence of bacteria resistances difficult of treatment. Pseudomonas aeruginosa is opportunist pathogens and the treatment is difficult and requires a long period of treatment. Hydrogels are structure polymeric tridimensional and biocompatible. They have been used as a controlled delivery system for treatment of topic infection. Studies have reported calcium carbonate and silver ion can improve the mechanical properties and biocide activity of hydrogel. Here in this study, hydrogels loaded CaCO3-Ag were prepared using poly (N-vinyl-2-pyrrolidone), poly (ethylene glycol), agar, calcium carbonate, silver nitrate followed gamma irradiation with 25 kGy dose. The gel fraction, behavior swelling and biocide action against P. aeruginosawas investigated. The degree of swelling of the hydrogel loaded CaCO3-Ag was 12% higher than the unloaded and exhibited antibacterial effects against P. aeruginosa and biofilm.

    Palavras-Chave: hydrogels; calcium carbonates; antimicrobial agents; gamma radiation; skin; wounds; healing; eggs; silver nitrates; bacteria

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  • IPEN-DOC 14661

    SETZ, L.F.G.; CORREA, H.P.S.; YAMAGATA, C. ; MELLO CASTANHO, S.R.H. . Synthesis and sintering behaviour of the lanthanum chromite doped with strontium and cobalt for SOFC interconnect applications. In: BANSAL, NAROTTAM P. (Ed.); SALEM, JONATHAN (Ed.); ZBU, DONGMING (Ed.). Advances in solid oxide fuel cells III: Ceramic Engineering and Science Proceedings. Westerville: John Wiley, 2007. DOI: 10.1002/9780470339534.ch23

    Palavras-Chave: chromium oxides; lanthanum oxides; doped materials; strontium; cobalt; solid oxide fuel cells; synthesis; sintering

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  • IPEN-DOC 02780

    VEIGA, S.M.B. ; VEIGA, M.M.; CHAKLADER, A.C.D.; BRESSIANI, J.C. . Synthesis of Alsub(2)Osub(3) - SiC - ZrOsub (2) from kaolinite and zircon. In: HAWTHORNE, H.M. (Ed.); TIROCZYNSKI, T. (Ed.). Advanced ceramics for structural and tribological applications. Vancouver: British Columbia, 1995, 1995. p. 107-116,

    Palavras-Chave: ceramics; composite materials; aluminium oxides; silicon carbides; zirconium oxides; sintering; kaolinite; fracture properties; oxidation

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  • IPEN-DOC 25883

    FUNGARO, DENISE A. ; IZIDORO, JULIANA C. ; GUILHEN, SABINE N. ; SILVA, KATIA C. ; WANG, SHAOBIN. Synthesis of nanocrystalline zeolite Na-A from coal fly ash and different aluminum sources: application for heavy metals removal. In: GRAY, MIRIAM (Ed.). Coal Fly Ash. Hauppauge, NY, USA: Nova Science Publishers, 2018. p. 1-33, cap. 4.

    Abstract: This chapter describes the synthesis process to obtain zeolite Na-A from coal fly ash via fusion with NaOH followed by hydrothermal reaction. Coal fly ash is a low cost source of both silica and alumina. The molar ratio of SiO2/Al2O3 for zeolite 4A formation was achieved by the addition of sodium aluminate solution or aluminum waste from tertiary industry as aluminum sources. The effects of temperature and time at the fusion step and the hydrothermal reaction time on crystalline products were investigated. The synthesized products were studied for their purity and yield as well as were characterized by different techniques such as Xray powder diffraction (XRD), scanning electron microscopy (SEM) and cation exchange capacity (CEC), among others. Analysis of the properties of the raw materials and the products demonstrates that the by-products can be used to produce a high purity zeolite A. The optimum conditions related to the synthesis was set and the samples were pure, highly crystalline and white. The synthesized zeolites were used for both the removal of Cd (II) and Zn (II) from aqueous solution. The results showed that coal fly ash and aluminum source can be transformed into zeolite A, which is considered as value-added material with adsorption properties.

    Palavras-Chave: synthesis; zeolites; nanocrystals; coal; fly ash

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  • IPEN-DOC 24657

    ZAFALON, ANGELICA T. ; SANTOS, VINICIUS J. dos ; ESPOSITO, FERNANDA; LINCOPAN, NILTON; RANGARI, VIJAYA; LUGAO, ADEMAR B. ; PARRA, DUCLERC F. . Synthesis of polymeric hydrogel loaded with antibiotic drug for wound healing applications. In: LI, BOWEN (Ed.); LI, JIAN (Ed.); IKHMAYIES, SHADIA (Ed.); ZHANG, MINGMING (Ed.); KALAY, YUNUS E. (Ed.); CARPENTER, JOHN S. (Ed.); HWANG, JIANN-YANG (Ed.); MONTEIRO, SERGIO N. (Ed.); FIRRAO, DONATO (Ed.); BROWN, ANDREW (Ed.); BAI, CHENGUANG (Ed.); PENG, ZHIWEI (Ed.); ESCOBEDO-DIAZ, JUAN P. (Ed.); GOSWAMI, RAMASIS (Ed.); KIM, JEONGGUK (Ed.). Characterization of Minerals, Metals, and Materials. TMS. Cham, CZ, Switzerland: Springer International Publishing AG., 2018. p. 165-176, (The Minerals, Metals & Materials Series). DOI: 10.1007/978-3-319-72484-3_18

    Abstract: Polymeric hydrogels are natural or synthetic systems, which have gained interest due to their high biocompatibility with soft tissues. These types of hydrogels have been used for wound dressing as a drug delivery system. Here in this study the polymeric hydrogels based wound healing systems were prepared using poly (N-vinyl-2-pyrrolidone) (PVP), poly (ethylene glycol) (PEG), agar and neomycin drug followed by gamma irradiation to promote crosslinking and sterilization. The influence of irradiation process with 25 kGy dose was investigated. The gel fraction and maximum swelling were estimated using physicochemical methods and found about 95% gel fraction and 1100% swelling after 8 h of immersion. Neomycin released from hydrogel was carried out by Liquid Chromatography-Mass Spectrometry method and the drug concentration remained constant for 48 h. Hydrogel/neomycin exhibited antibacterial effects against Staphylococcus aureus. With these results, it can be inferred that hydrogel/neomycin is a suitable candidate for wound dressing.

    Palavras-Chave: hydrogels; polymers; antibiotics; drugs; wounds; neomycin; pvp; irradiation

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  • IPEN-DOC 24645

    HAMBLIN, MICHAEL R.; SABINO, CAETANO P. . Systemic effects. In: SELLERA, FABIO P. (Ed.); NASCIMENTO, CRISTIANE L. (Ed.); RIBEIRO, MARTHA S. (Ed.). Photodynamic therapy in veterinary medicine: from basics to clinical practice. Gewerbestrasse, Switzerland: Springer, 2016. p. 73-91, DOI: 10.1007/978-3-319-45007-0_6

    Observação: Livro na íntegra disponível. Consulte a biblioteca do IPEN.

    Abstract: Photodynamic therapy (PDT) is a clinically approved practice for treatment of cancer and infectious diseases. PDT involves systemic or topical administration of a photosensitizer (PS), followed by irradiation of the target area with light of a wavelength matching the absorption band of the PS. In the presence of oxygen, photochemical reactions trigger the production of reactive oxygen species and, consequently, cell death by oxidative stress. Besides causing direct cytotoxicity to tumor cells, PDT induces destruction of the tumor vasculature releasing pro-inflammatory cytokines. Current literature supports that PDT is able to affect both the innate and adaptive responses of the immune system. In addition, PDT-induced adaptive immunity may attack distant untreated tumor cells and lead to development of antitumor memory immunity, which can potentially avoid the cancer relapse. Conversely, pro-inflammatory activity of PDT can also collaborate to resolve local infections since more neutrophils are recruited to the infected region.

    Palavras-Chave: veterinary medicine; animals; photodynamic therapy; tumor cells; neoplasms; immunity

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  • IPEN-DOC 06747

    CARMO, C.A.F.S.; NOGUEIRA, A.R.A.; OLIVEIRA, A.S.; ALMEIDA, D.G.; FERNANDES, F.D.; PITTA, G.V.E.; CARLOS, G.M.; OLIVEIRA, H.; MAMAO, J.B.; ARMELIN, M.J.A. ; SALDANHA, M.F.C.; MIYAZAWA, M.; SCRAMIN, S.; BARRETO, W.O.; RUFINI, Y.A.. Tecidos vegetais. In: NOGUEIRA, A.R.A. et al (Ed.). Manual de laboratorios: Solo, agua, nutricao vegetal, nutricao animal e alimentos. Pt. 1: Coleta, acondicionamento e preparo de amostras. Sao Carlos: EMBRAPA, 1998, 1998. p. 32-42,

    Palavras-Chave: plants; plant tissues; sampling; leaves

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Autor: Maprelian

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✔ Para indexação dos documentos é utilizado o Thesaurus do INIS, especializado na área nuclear e utilizado em todos os países membros da International Atomic Energy Agency – IAEA , por esse motivo, utilize os termos de busca de assunto em inglês; isto não exclui a busca livre por palavras, apenas o resultado pode não ser tão relevante ou pertinente.

✔ 95% do RD apresenta o texto completo do documento com livre acesso, para aqueles que apresentam o significa que e o documento está sujeito as leis de direitos autorais, solicita-se nesses casos contatar a Biblioteca do IPEN, bibl@ipen.br .

✔ Ao efetuar a busca por um autor o RD apresentará uma relação de todos os trabalhos depositados no RD. No lado direito da tela são apresentados os coautores com o número de trabalhos produzidos em conjunto bem como os assuntos abordados e os respectivos anos de publicação agrupados.

✔ O RD disponibiliza um quadro estatístico de produtividade, onde é possível visualizar o número dos trabalhos agrupados por tipo de coleção, a medida que estão sendo depositados no RD.

✔ Na página inicial nas referências são sinalizados todos os autores IPEN, ao clicar nesse símbolo será aberta uma nova página correspondente à aquele autor – trata-se da página do pesquisador.

✔ Na página do pesquisador, é possível verificar, as variações do nome, a relação de todos os trabalhos com texto completo bem como um quadro resumo numérico; há links para o Currículo Lattes e o Google Acadêmico ( quando esse for informado).

ATENÇÃO!

ESTE TEXTO "AJUDA" ESTÁ SUJEITO A ATUALIZAÇÕES CONSTANTES, A MEDIDA QUE NOVAS FUNCIONALIDADES E RECURSOS DE BUSCA FOREM SENDO DESENVOLVIDOS PELAS EQUIPES DA BIBLIOTECA E DA INFORMÁTICA.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

1. Portaria IPEN-CNEN/SP nº 387, que estabeleceu os princípios que nortearam a criação do RDI, clique aqui.


2. A experiência do Instituto de Pesquisas Energéticas e Nucleares (IPEN-CNEN/SP) na criação de um Repositório Digital Institucional – RDI, clique aqui.

O Repositório Digital do IPEN é um equipamento institucional de acesso aberto, criado com o objetivo de reunir, preservar, disponibilizar e conferir maior visibilidade à Produção Científica publicada pelo Instituto, desde sua criação em 1956.

Operando, inicialmente como uma base de dados referencial o Repositório foi disponibilizado na atual plataforma, em junho de 2015. No Repositório está disponível o acesso ao conteúdo digital de artigos de periódicos, eventos, nacionais e internacionais, livros, capítulos, dissertações, teses e relatórios técnicos.

A elaboração do projeto do RI do IPEN foi iniciado em novembro de 2013, colocado em operação interna em julho de 2014 e disponibilizado na Internet em junho de 2015. Utiliza o software livre Dspace, desenvolvido pelo Massachusetts Institute of Technology (MIT). Para descrição dos metadados adota o padrão Dublin Core. É compatível com o Protocolo de Arquivos Abertos (OAI) permitindo interoperabilidade com repositórios de âmbito nacional e internacional.

O gerenciamento do Repositório está a cargo da Biblioteca do IPEN. Constam neste RI, até o presente momento 20.950 itens que tanto podem ser artigos de periódicos ou de eventos nacionais e internacionais, dissertações e teses, livros, capítulo de livros e relatórios técnicos. Para participar do RI-IPEN é necessário que pelo menos um dos autores tenha vínculo acadêmico ou funcional com o Instituto. Nesta primeira etapa de funcionamento do RI, a coleta das publicações é realizada periodicamente pela equipe da Biblioteca do IPEN, extraindo os dados das bases internacionais tais como a Web of Science, Scopus, INIS, SciElo além de verificar o Currículo Lattes. O RI-IPEN apresenta também um aspecto inovador no seu funcionamento. Por meio de metadados específicos ele está vinculado ao sistema de gerenciamento das atividades do Plano Diretor anual do IPEN (SIGEPI). Com o objetivo de fornecer dados numéricos para a elaboração dos indicadores da Produção Cientifica Institucional, disponibiliza uma tabela estatística registrando em tempo real a inserção de novos itens. Foi criado um metadado que contém um número único para cada integrante da comunidade científica do IPEN. Esse metadado se transformou em um filtro que ao ser acionado apresenta todos os trabalhos de um determinado autor independente das variáveis na forma de citação do seu nome.