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New broadband mobile IP bearing network technologies based on ID/Locator separation solve the four questions security, mobility, routing scalability and network integration. As the main direction of mobile Internet and telecom broadband network integration, the research of the overall architecture and key evaluation methods of the mobile Internet and broadband network integration is used to guide other research directions. This article reviews the related studies of the integration and evolution, as well as the related key technologies and new equipment/system, to development the application platform and construction to complete scientific research achievements of the ground and presentation.

EPS network is the future direction of mobile network, and voice service is still important in the EPS network. In the conventional 2G/3G mobile communication, voice service is provided by circuit switching in the CS domain. As the LTE core network provides the access to high-speed and lower latency wireless packet data on the air interface 3GPP retains the PS domain rather than the CS domain in designing the core network. And voice service which is included in the packet domain is available through VOIP. To ensure high-quality voice services, 3GPP proposes two solutions: CSFB and SRVCC. Each option has its own applied conditions, advantages and disadvantages. This article first introduces EPC network framework and the functions of its core functional entities. Then the network framework and voice processing of the two programs (CSFB and SRVCC) are compared. At last, a conclusion of advantages and disadvantages of the two programs is given, and it will lay the basis for different options.

In this paper, CeVO4/TiO2 composite photocatalyst has been characterized by photoelectrochemical and reactive oxygen species trap techniques to reveal the mechanism for photocatalytic degradation of VOCs in gas-phase. Based on the measurement of flatband of the samples and the detection of reactive oxygen species, a visible light-induced photocatalytic degradation mechanism of VOCs on CeVO4/TiO2 is proposed.

In this work, a visible light-activated LaVO4/TiO2 composite photocatalyst has been successfully synthesized via a facile coupled method. The composite was characterized by powder X-ray diffraction (XRD), UV-vis diffuse reflectance spectroscopy (DRS) and spin-trapping electron paramagnetic resonance (EPR). Based on the detection of active oxygen species, a visible light-induced photocatalytic degradation mechanism of benzene on LaVO4/TiO2 was proposed.

A visible-light-driven CeVO4/TiO2 photocatalyst with nanostructured heterojunction has been successfully prepared by a simple coupled method. The catalyst was characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS) and spin-trapping electron paramagnetic resonance (EPR). The visible light-induced photocatalytic activities were evaluated by decomposing benzene in gas phase. The result showed that the prepared catalyst exhibited efficient photocatalytic activities with high photochemical stability under visible light irradiation.

A visible-light-responsive TiO2-xNx photocatalyst was prepared by a very simple method. Ammonia solution was used as nitrogen resource in this paper. The TiO2-xNx photocatalyst was characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET), UV-Vis diffuse reflection spectra (DRS), and X-ray photoelectron spectroscopy (XPS). The ethylene was selected as a target pollutant under visible light excitation to evaluate the activity of this photocatalyst. The new prepared TiO2-xNx photocatalyst with strong photocatalytic activity under visible light irradiation was demonstrated in the experiment.

The oils studied in this work were three typical oils, sampled from Daqing, Jilin, Liaohe Oil Fields and marked with 1#, 2#, 3# respectively, with wax contents 20.06%, 26.2%, 32.9% separately. The effects of PPD on WATs, abnormal points, pour points, rheological properties and wax-crystal morphology were studied in detail in this paper. The results of experiments indicated that PPD lowers WATs and abnormal points, and decreases the viscosities of crude oils when they are non-Newtonian fluids. In wax-crystallization peak area, both high shear rate and increase of cooling rate make the effects of PPD decrease and the viscosity of oil increase. When 1# sample is reheated to some temperature below 50°C (for 2#, below 70°C), the effects of PPD reduce. With the increase of PPD’s dosage, the crystal size gets smaller and the dispersibility becomes better.