In this paper, a wet-chemical based method was adopted to acquire the uniform dispersion of graphene nanosheets (GNSs) in a powder metallurgy nickel-based superalloy (FGH96) to fabricate a new GNSs reinforced FGH96 metal matrix composite. The surface of the FGH96 powder was modified using a hydrophilic surfactant named polyvinyl alcohol (PVA), which has good wettability and strong hydrogen bonding between the ⁻OH groups of PVA and oxygen groups of GNSs such as ⁻COOH, ⁻CHO, and ⁻OH. It was shown that the GNSs displayed much better dispersion uniformity on the PVA modified FGH96 powder than the unmodified one.
View Article and Find Full Text PDFWe investigate a discrete-time predator-prey system with cooperative hunting in the predators proposed by Chow et al. by determining local stability of the interior steady states analytically in certain parameter regimes. The system can have either zero, one or two interior steady states.
View Article and Find Full Text PDFThis study aimed to assess the measurement uncertainty of a new method for determination of allura redin food by high performance liquid chromatography (HPLC). The uncertainty of mathematical model of allura red is based on Europe for Analytical Chemistry(EURACHEM) guidelines. The sources and components of uncertainty were calculated, including recovery, working solution, sample mass, final volume, response of standard solution, response of sample solution.
View Article and Find Full Text PDFAim: In our previous study, we have built a nine-gene (, , , , , , , , and ) expression detection system based on the GeXP system. Based on peripheral blood and GeXP, we aimed to analyze the results of genes expression by different multi-parameter analysis methods and build a diagnostic model to classify hepatocellular carcinoma (HCC) patients and healthy people.
Methods: Logistic regression analysis, discriminant analysis, classification tree analysis, and artificial neural network were used for the multi-parameter gene expression analysis method.
Patients with hepatocellular carcinoma (HCC) exhibit a high incidence of concomitant cirrhosis with leukopenia and/or thrombocytopenia. In the present study, perioperative changes in the white blood cell (WBC) and platelet (PLT) counts and associated complications were investigated to assess the safety of transcatheter arterial chemoembolization (TACE) for HCC patients with preprocedural leukopenia or thrombocytopenia. The records of 1,461 HCC patients who received TACE between January 2012 and December 2013 were retrospectively reviewed.
View Article and Find Full Text PDFPercutaneous ethanol injection is an important localized treatment method for patients presenting with hepatocellular carcinoma (HCC). Among the advantages of percutaneous ethanol injection are its minimal invasiveness, simplicity, low cost and low risk of complications. However, the increasing popularity of percutaneous ethanol injection has resulted in serious adverse effects attributed to individual variations.
View Article and Find Full Text PDFPurpose: The aim of this study was to investigate the distribution and frequency of genetic polymorphisms in uridine diphosphate glucuronosyltransferase-2B7 (UGT2B7) in epilepsy patients and to evaluate the effect of these on the metabolism of valproic acid (VPA).
Methods: Single nucleotide polymorphisms in UGT2B7 were investigated in 102 epilepsy patients using DNA sequencing and polymerase chain reaction-restriction fragment length polymorphism analysis. The steady-state plasma concentrations of VPA were determined in these patients, who had received VPA (approx.
Objective: Clinical trials suggest that combining transcatheter arterial chemoembolization with sorafenib in patients with advanced hepatocellular carcinoma shows a superior safety and tolerability profile. Our study aimed to retrospectively analyze the utility and prognostic factors of this combined therapy in these patients.
Methods: Patients with advanced hepatocellular carcinoma, treated by transcatheter arterial chemoembolization and sorafenib subsequently, between February 2010 and September 2012 in our hospital, were retrospectively analyzed.
A novel quantitative real-time PCR method using the duplex scorpion primer for detection of Chlamydia trachomatis DNA was developed and validated. The assay employs a duplex primer; its most important feature is the intramolecular probe-target interaction. The assay had many prominent characteristics.
View Article and Find Full Text PDFWei Sheng Wu Xue Bao
December 2004
An integration plasmid pMW1-pepB for the pepB gene disruption in Aspergillus was constructed. The plasmid contained the pepB gene upstream (P) 1.4kb and downstream (T) 1.
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