Nuclear Organization
Mostrando 1-12 de 425 artigos, teses e dissertações.
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1. Trypanocidal Activity and Increased Solubility of Benznidazole Incorporated in PEG 4000 and Its Derivatives
Selecting a polymer depends on its characteristics, the properties of the drug and of the remaining ingredients in the formulation. The drug, when incorporated into a polymeric matrix, can show several advantages when compared with its conventional form. In this context, this work describes the preparation and characterization of polyethylene glycol (PEG 400
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. The development and characterization of Propranolol Tablets using Tapioca starch as excipient
Abstract: Tapioca starch (TS) is produced from Cassaca roots and it is differentiated from other starches because it contains about 17–20% amylase and low amount of residual substances. Propranolol (POP) is a non-selective beta-adrenergic blocking agent and it is in the World Health Organization’s List of Essential Medicines. The aim of this work was to
An. Acad. Bras. Ciênc.. Publicado em: 08/04/2019
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3. Antimicrobial Diterpene from the Brazilian Termite Nasutitermes macrocephalus (Isoptera: Termitidae: Natutitermitinae)
Termites are insects with a complex social organization on castes among which soldiers are the only responsible for the colony defense. The soldiers of the Nasutitermes genus use chemical defense, which comprises a mixture of mono, sesqui and mainly diterpenes. The new diterpene 2b,3a-dihydroxy-trinervita-1(15),11-diene, found in Nasutitermes macrocephalus,
J. Braz. Chem. Soc.. Publicado em: 2018-03
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4. An easy, reproducible and cost-effective method for andrologists to improve the laboratory diagnosis of non-obstructive azoospermia: a novel microcentrifugation technique
ABSTRACT This study describes a new method of microcentrifugation as an improved, viable, cost-effective option to the classical Cytospin apparatus to confirm azoospermia. Azoospermic semen samples were evaluated for cryptozoospermia by a centrifugation method similar to that of World Health Organization guidelines (2010; entire specimen centrifuged at 3000g
Int. braz j urol.. Publicado em: 2016-02
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5. Solvent Effect on the Morphology of Lamellar Nanocomposites Based on HIPS
In this study, hybrid nanocomposites based on HIPS, high-impact polystyrene, were prepared in chloroform and in a 1:1 mixture of toluene and chloroform varying the quantity of organophilic montmorillonite. The morphology of the hybrid materials was investigated by X-ray diffraction (XRD) and proton relaxometry, determined in a low-field 1H nuclear magnetic r
Mat. Res.. Publicado em: 2015-02
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6. Efeito da adição de TIO2 nas propriedades térmicas e na cristalinidade do copolímero de etileno/acetato de vinila
We investigated the effect of adding titanium dioxide nanoparticles (TiO2) to ethylene vinyl acetate (EVA) copolymer, containing 28% vinyl acetate groups, on the crystallinity and miscibility of the copolymer. Films of EVA/TiO2 containing 0.25%-1% TiO2, relative to the total weight of EVA, were prepared from their solution. The obtained films were characteri
Quím. Nova. Publicado em: 2014-04
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7. Análise dos procedimentos e critérios de implantação de feixes de raios X de referência ISO 4037 em baixas energias
According to the radiological protection principles, practices involving ionizing radiation must be planned and carried out under the guarantee that the values of individual doses, the number of people exposed to radiation and the probability of accidental exposures are as low as reasonably achievable. Therefore, radiation dosimetry is required to be done wi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/08/2012
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8. Desenvolvimento e caracterização de dispositivo de PLLA/Trietil-Citrato associado à derme suína acelular para reparação de lesões cutâneas / Development and characterization of PLLA/Triethyl citrate device associated to acellular dermal matrix to repair cutanous wounds
One of the challenges of the Tissue Engineering is to promote a better functioning of organs and tissues damaged by diseases or traumas. With target for developing a biphasic device for future regeneration and dermal application in Tissue Engineering and Regenerative Medicine, fibroblasts from VERO cell line were cultivated on a porcine acellular dermal matr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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9. Aplicabilidade e validação do Geant4 para fótons e elétrons em radioterapia / GEANT4 applicability and validation to Photons and Electrons in Radiotherapy
Due to the increasing use of ionizing radiation in medical applications, in recent decades, the simulation codes for radiation interacting with matter, based on Monte Carlo Method, have been constantly adapted to applications in medical physics. TheMonte Carlo method is a statisticalmethod of numerical simulation of problems using essentially a sequence of r
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/06/2011
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10. Karyoplast exchange between strontium- and 6-DMAP-parthenogenetically activated zygotes of cattle.
Ooplasmic factors drive nuclear organization after fertilization and are also important for re-programming in nuclear transfer procedures, in which artificial activation is essential for reconstructed embryos to progress in development. The present research evaluated the effect of pronuclear transfer (PT) between zygotes parthenogenetically activated with io
Animal Reproduction Science. Publicado em: 2011
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11. Levels of Ligand receptor activator nuclear factor kb (RANKL) and Osteoprotegerin (OPG) in fluid peri-implant crevicular implants charged immediately in patients with osteopenia / Níveis do ligante receptor ativador do fator nuclear kb (Rankl) e osteoprotegerina (OPG) no fluido crevicular peri-implantar de implantes carregados imediatamente em pacientes com osteopenia
The successful outcome of immediately loaded implants is influenced by a number of confounding factors, such as bone remodeling response and bone quality in the periimplant site. Bone resorption is controlled by the interaction of the receptor activator of the NF-kß ligand (RANKL) and osteoprotegerin (OPG). RANKL induces osteoclast formation and activation
Publicado em: 2011
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12. Comparative study of Si diodes response for gamma radiation dosimetry / Estudo comparativo das respostas de diodos de Si para dosimetria de radiação gama
Neste trabalho é apresentado um estudo comparativo da resposta de diodos de Si para dosimetria de radiação gama. Os diodos investigados, crescidos pelas técnicas de fusão zonal (Fz) e Czchocralski magnético (MCz), foram processados no Instituto de Física da Universidade de Helsinki no âmbito das pesquisas e desenvolvimento de dispositivos de Si resis
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/04/2010