CONTEXT AND OBJECTIVE Pap smears are the most common and inexpensive screening method for cervical cancer. We analyzed micronucleus prevalence in exfoliated cervical mucosa cells, to investigate associations between increased numbers of micronuclei and risk factors for cervical cancer. DESIGN AND SETTING Analytical cross-sectional study, at Instituto de Pesquisa em Oncologia (IPON). METHODS...

The cytodiagnostic acridine orange (AO) fluorescence microscope method was applied to exfoliated material from 4348 cases. The method utilizes increased amounts of cytoplasmic ribonucleic acid (RNA) in malignant cells to demonstrate them in brilliant orange and red fluorescence colors. Scanning smears under low magnification readily revealed the presence of cells with increased fluorescence. Us...

Exfoliated graphite (obtained by rapid heating of sulfuric-acid intercalated and subsequently deacidified graphite flakes) is optionally subjected to residual acidity removal, which involves repeated washing with water, such that the pH of the wash water increases from 2 to 7. Compared to washed exfoliated graphite, the unwashed material exhibits lower specific surface area (24 vs. 45 m/g), a h...

Three new layered metal-organic frameworks (MOFs) based on 2-phenylsuccinic acid (H2psa) and lanthanide ions, with formula [Ln2(C10H8O4)3(H2O)] (Ln= Eu, Sm and EuGd) have been synthesized under solvothermal conditions and fully characterized by singlecrystal X-ray diffraction, thermal and vibrational analysis. The compounds are isostructural featuring 2D frameworks that consist of infinite zig-...

Recently, Exfoliated graphitic carbon nitride (E-gCN) has drawn significant interest in the field of energy generation and storage. In this study, exfoliated nanoflakes are synthesized by condensation followed ultrasonic exfoliation. The supercapative behavior is analyzed. Structural analyses confirm formation thiazine heptazine heterocycles. Scanning electron microscopy image shows flake-like ...

Organic-inorganic hybrid materials can be prepared dispersing organic species into well-defined inorganic nanoblocks. This paper describes the immobilization of natural dyes from the extract of the Brazilian açaí-fruit into two types of layered hexaniobate precursors derived from H(2)K(2)Nb(6)O(17): (i) colloidal dispersion of niobate exfoliated nanoparticles and (ii) niobate pre-intercalated w...

OBJECTIVE The aim of this study was to determine micronucleus (MN) frequencies in exfoliated cervical cells and peripheral blood lymphocytes of women with polycystic ovarian syndrome (PCOS). MATERIALS AND METHODS Fifteen patients with PCOS and 11 healthy control patients were included in the study. Cervical smears and peripheral blood were collected from all patients. Specimens were analyzed ...

The cytodiagnostic acridine orange (AO) fluorescence microscope method was applied to exfoliated material from 4348 cases. The method utilizes increased amounts of cytoplasmic ribonucleic acid (RNA) in malignant cells to demonstrate them in brilliant orange and red fluorescence colors. Scanning smears under low magnification readily revealed the presence of cells with increased fluorescence. Us...

Cervical cytology is the examination of exfoliated cells from the surface of ectocervix and lower cervical canal. In early invasive carcinoma of the cervix malignant cells may be shed before the condition is clinically recognizable. In carcinomain-situ, which precedes some or all cases of invasive carcinoma, malignant cells may be exfoliated as many as ten or fifteen years before the condition ...

Amphiphilic block copolymer poly(isoprene-b-acrylic acid) (PI-b-PAA) was used to stabilize exfoliated graphene in water, allowing the immobilization of semiconductor CdS nanoparticles forming CdS • PI-b-PAA/graphene. Characterization using high-resolution transmission electron microscopy and energy-dispersive x-ray spectroscopy proved the success of the preparation method and revealed the prese...