In order to study the important factors for evaluating the prognosis of breast cancer patients, a fluorescence microscopy-assisted fluorescence in situ hybridization technique was proposed. Compared with other detection techniques, fluorescence in situ hybridization (FISH) technology assisted by a fluorescence microscope has gradually gained favor in related fields due to its advantages of high detection specificity, high sensitivity, and strong experimental period. Combined with the basic overview of fluorescence microscopy and FISH technology, the advantages and application points of FISH technology assisted by fluorescence microscopy in the detection of the Her2 gene in breast cancer patients were studied and discussed. The results show that IHC can be used as the primary screening for HER2 gene status detection; IHC (2+) and IHC (3+) have false positives, which are related to chromosome 17 polysomy, so FISH should be done to confirm the diagnosis.
Using precipitated silica as the carrier, a kind of composite photocatalyst was prepared through hydrolysisde positing method. The obtained composite material was characterized by XRD, SEM, TEM, FT-IR. Based on the experimental results and analysis of characterization, the preparation mechanism of composite powder material was studied. The photocatalytic degration experiment of Rhodamine-B indicates that the precipitated silica is an ideal carrier of the TiO2,and the photocatalyst can combine with the silica tightly. The photocatalytic activity of the obtained composite material is stabilize and constant.
In the study, porous amorphous silica minerals including Porous Silicon (PS), Diatomite Filter Aid (DFA) and Opal (Op) were chosen as carriers or supports to prepare TiO2/PS, TiO2/DFA and TiO2/Op composites by chemical co-precipitation method. The compound materials were characterized by SEM, TEM, and the photo-catalytic property of the prepared composites was investigated by degradation of Rhodamine B (RhB). Characterization showed that nanoTiO2was coated on the surface of porous amorphous silica minerals. The crystal form of TiO2was mainly anatase, and the size of which was nanoscale. Through comparative analysis, the photo-catalytic efficiency of TiO2/PS composite was the best, followed by TiO2/ DFA, and then TiO2/Op.
A direct methanol fuel cell (DMFC) electrode based on the carbon fiber cloth (CFC) modified with wrap-like graphene oxide (GO) decorated with platinum nanoparticles was prepared by multicycle CV method. Also, the Pt/CFC composite and GO/CFC composite were prepared by multicycle CV and potentiostatic method, respectively. The four electrodes (GO-Pt/CFC, Pt/CFC, GO/CFC and CFC) were tested in a fuel cell for electro-oxidation of methanol and were analyzed by scanning electron microscopy (SEM) and X-Ray powder diffraction (XRD). The SEM image indicated that the surface of CFC was covered by a wrap-like graphene oxide (GO) film completely, which increased the contact area with methanol solution and provided more load points. And the Pt nanoparticles supported GO/CFC electrode possessed the ball-like morphology. The electrochemical measurements showed that the electrocatalytic peak current density of methanol oxidation of GO-Pt/CFC electrode (218 mA/cm 2) was about 27% higher than Pt/CFC electrode (172 mA/cm 2) and the steady-state current density of GO-Pt/CFC electrode was 57.6%, 114.5% and 497.9% higher than that of Pt/CFC, GO/CFC and CFC electrodes, respectively. And this date revealed that the ball-like morphology of Pt nanoparticles and a wrap-like GO film coated on CFC surface were favorable to improve the electrocatalytic oxidation activity of methanol.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.