Self-Reference Analysis Based on Temperature Difference Absorption Spectra.

The direct qualitative identification of pure liquids in laboratories and in security checks is generally performed by the detection of the refractive index or the permittivity. However, refractive indices are strongly influenced by temperature, while the permittivities of some organics are difficult to differentiate. On the other hand, the quantitative monitoring of samples with high concentration in plating baths and in chemical production lines are generally performed via a "Sampling-Dilution-Analysis" approach because of significant deviations from the linear range at high concentration, which makes the real-time monitoring of concentrated samples difficult.

Diagnostic accuracy of a selected signature gene set that discriminates active pulmonary tuberculosis and other pulmonary diseases.

Objective: We validated the accuracy of host selected signature gene set using unstimulated whole blood (WB), and peripheral blood mononuclear cells (PBMC) in the diagnosis of tuberculosis (TB).

Methods: The unstimulated WB and PBMC from 1417 individuals with active pulmonary TB patients, other lung diseases and healthy participants were analyzed using real time polymerase chain reaction (RT-PCR).

Results: The WB cohort test demonstrates that the combination of GBP5 and KLF2 can differentiate active TB versus HC with sensitivity and specificity of 77.

[Monitoring report of Oncomelania hupensis snails in Huizhou District in 2013].

Objective: To further master the Oncomelania hupensis snail situation in Huizhou District, so as to provide the evidence for improving the prevention and control work.

Methods: According to the prevalence of schistosomiasis in history and the characteristics of residual snail points in recent years, the snail surveys were carried out with the environmental sampling and systematic sampling method in history snail environments and their surrounding suspicious environments.

Results: Totally 5,298,940 m2 in 12 administrative villages of 3 townships were investigated and there were 24 406 m2 snail areas at 5 remaining snail spots in 4 administrative villages.

[Variation characteristics and mathematical model of humic substances in landfill leachates with different landfill ages].

The influence of municipal landfill age on the characteristics of humic substances in leachate on the basis of investigating 12 different kinds of leachates from landfills in Fujian province is presented in this study. It was shown that the concentration and percentage of fulvic acid (FA) were obviously higher than those of humic acid (HA). As the landfill age increased, the concentrations of HA, FA and humic substances (HS) increased, moreover, the percentage of HA first increased and then decreased.

[Investigation on status of Oncomelania hupensis in schistosomiasis transmission-interrupted areas of Huangshan City].

Objective: To explore a new monitoring method for schistosomiasis transmission interrupted areas, so as to evaluate the monitoring results in counties (districts) to improve the quality.

Methods: Specialized technicians were selected as survey teams to investigate the status of Oncomelania hupensis snails with the random sampling method combined with environmental sampling method every year from 1997 to 2013.

Results: From 1997 to 2013, 118 villages of 38 townships of 21 counties were investigated for the snail status, and there were 18 environments with snails in 10 townships of 7 counties.

Study on the electrochemical catalytic properties of the topological insulator Bi₂Se₃.

In this work, the electrochemical catalytic properties of the topological insulator bismuth selenide (Bi₂Se₃) were first studied. In the presence of Bi₂Se₃ the reduction current of dissolved O₂ could be significantly enhanced. The electron transfer resistivity (Rct) was greatly reduced at the Bi₂Se₃-PVP modified electrode as evidenced by the electrochemical impedance spectrometry, implying that the topological insulator Bi₂Se₃ could facilitate the electron transfer at the interface due to the excellent surface conductivity.

[Investigation on newly advanced schistosomiasis patients in schistosomiasis transmission-interrupted areas].

There were 240 newly advanced schistosomiasis patients in Huangshan City from 2004 to 2011. All the patients were clinically diagnosed and mainly distributed in the countries which were once heavy endemic areas in history. Most of the patients were diagnosed in 2007 and 2008, and those aged more than 60 years accounted for 79.

Rapid visual detection of aluminium ion using citrate capped gold nanoparticles.

We report the visual detection of Al(3+) using unlabeled gold nanoparticles (AuNPs) based on the complexation of Al(3+) with citric acid, resulting in the aggregation of AuNPs. The distinction of color change can be observed by the naked eye at concentrations down to 1.0 μM which is lower than the permissable level (7.

[Surveillance of schistosomiasis after its transmission being interrupted in Huangshan City, 1994-2010].

In Huangshan City, schistosomiasis surveillance from 1994 to 2010 showed that there were no patients and livestock newly infected with schistosome, no infected Oncomelania snails, but the snail status was stable. It is suggested that the schistosomiasis control strategy with emphasis on snail surveillance is effective, and snail surveillance is still a key measure of schistosomiasis surveillance in the future.

Monitoring of peptide-specific and gamma interferon-productive T cells in patients with active and convalescent tuberculosis using an enzyme-linked immunosorbent spot assay.

To establish a high-efficiency gamma interferon-specific enzyme-linked immunosorbent spot assay (IFN-γ ELISPOT assay) for detection of tuberculosis (TB), peptides (E6, E7, and C14) and peptide mixtures (E6 plus E7 and E6 plus E7 plus C14) were used to monitor peripheral blood (PBL) samples from patients with pulmonary TB (PTB), as well as control samples. The positive detection rates of the five IFN-γ ELISPOT assays were 78.38%, 74.

Electrogenerated chemiluminescence of bis[4-(dimethylamino)phenyl]squaraine.

For the first time, we reported the strong electrogenerated chemiluminescence of organic dye, bis[4-(dimethylamino)phenyl]squaraine (BDPSQ), a high quantum yield and light-stable species, which might find applications in ECL analysis and imaging.

Electrogenerated chemiluminescence from Au nanoclusters.

Electrogenerated chemiluminescence (ECL) of Au clusters is observed for the first time using triethyamine (TEA) as the coreactant. The potential application of ECL Au clusters in analytical chemistry is also demonstrated using Pb(2+) as an example.

Hot electron induced cathodic electrochemiluminescence at AuSb alloy electrode for fabricating immunosensor with self-assembled monolayers.

Thin antimony oxide covered AuSb alloy electrode was firstly found to be an excellent cold cathode for generating hot electrons during cathodic pulse polarization. Owing to the injection of hot electrons and the subsequent generation of hydrated electrons, fluorescein iso-thiocyanate (FITC) that cannot be excited in common ECL was cathodically excited at the alloy electrode. Self-assembled thiol monolayers were formed on the electrode surface due to the presence of Au in the alloy, to which strepavidin was covalently bound, and then biotinylated antibody was immobilized through the strepavidin-biotin interaction.

An extremely stable and sensitive end-column electrochemical detector based on heated copper microdisk electrode with direct current for CE and CE-Chip.

A heated copper microdisk electrode (HCME) was fabricated and successfully applied to capillary electrophoresis (CE) and CE-Chip as an electrochemical detector (ECD) for the detection of three carbohydrates and shikimic acid (SA) in Illicium verum Hook F., respectively. The temperature of HCME was heated by twin-wire-wound coil with direct current to reduce the magnetic interference.

Catalytic electrogenerated chemiluminescence and nitrate reduction at CdS nanotubes modified glassy carbon electrode.

Electrochemical and electrogenerated chemiluminescence (ECL) properties of a glassy carbon electrode modified with CdS nanotubes (CdS-GCE) are investigated in neutral media. The cyclic voltammogram (CV) shows two cathodic peaks (P(C1) and P(C2)) at -0.76 and -0.