Advanced Materials Research Vol. 643

Abstract: This paper describes the principle, classification and application significance of GSHP (Ground Source Heat Pump) technology with Composite Properties of Biochemical Materials and analyzes its characteristics and economic benefits. Then its development history and domestic research status are introduced to present its broad prospects in China’s energy conservation, environmental protection and sustainable development

Abstract: This proposal is directed toward the development of innovative high-efficiency UV photodevice based on the wide bandgap III-nitride (GaN-based) semiconductors for reliable operation at the solar radiation action spectrum for human. This paper uses the UVM-30 photodetector to measure the UVI and the max exposure time (Erythema Time) in sun real time with a simple linear function relationship circuit, and introduces the function, performance, system configuration as well as the partial flow chart of the flowmeter.

Abstract: Two novel conjugated polymers (P1 and P2), consisting of 2,5-dioctyloxy-1,4- phenylenevinylene and terthiophene derivative based on 3,4-ethylenedioxythiophene, named TTh-Oxa, with oxadiazole side chains, have been synthesized via the Witting–Horner reaction. Another poly(p-phenylene vinylene) (PPV) derivative P3 was also prepared for comparison. The introduction of TTh-Oxa unit in polymer benefits to widening and red shifting the absorption spectra of PPV derivatives. Photovoltaic cells were fabricated with the as-synthesized polymers as the donors and [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) as the acceptor in a 1:4 weight ratio. The device based on P1 showed a maximum power conversion efficiency of 0.64 % under simulated AM 1.5 G solar irradiation (100 mW/cm²).

Abstract: By orthogonal experiments, optimal formulation of 1% abamectin microcapsule suspensions was determined as follow: the proportion of abamectin microcapsule is 1%, NNO 5.0%, sodium dodecyl sulfate 3.0%, xanthan gum 0.3%, ethylene glycol 3%, and the remainder is water. The indicators of the formulation are all excellent: good dispersibility, suspension rate greater than 90%, cold storage and hot storage syneresis rates under 5%. The properties of biochemical materials were used in optimization. The optimal formulation provides an experimental basis for industrial production of abamectin microcapsule suspensions.

Abstract: Abstract: In recent years, oil spill happens in river frequently, which has serious impact on the ecological environment and human health. So it is very important to conduct research on the pollution control technologies of oil spill in the river water. This paper analyzes the domestic and overseas existing oil spill pollution control technologies and puts forward the method combining oil recycling machine and oil dispersant to deal with the pollution caused by oil spill in Changqing Oilfield. Through the comparison, the turntable oil recycling machine and the SC-Y17 oil dispersant are finally selected. According to the experiment, we find that temperature has a great influence on the effect of oil dispersant and measures should be taken to improve the property to make it can adapt to the requirements of the low temperature environment.

Abstract: It is Important content that to make Surface modification and surface modification and Improve the material on the surface of the cell adhesion and promotes cell proliferation to bone tissue engineering scaffolds. The role of osteoblast and support material dependent on the Material surface characteristics, Local shape, surface energy and chemical energy, which Determine how cells adsorbed onto the surface of the material and Localization of cells and cell function behavior. Therefore, the complexity of biomaterials and cell biological material surface interaction determines the biological scaffold materials for surface modification of importance. Ideal surface modification should take into consideration the surface topology, specific identification, hydrophilic and hydrophobic protein adsorption equilibrium, and other aspects of functional new tissues. At present, the most applications in surface modification of materials is type I collagen, future research will be a variety of surface modification of materials for composite materials, which will play complementary roles, as well as gene therapy and the development of nanometer materials, it will become a hot issue in the field of bone tissue engineering.

Abstract: A label-free immunosensor was developed to detect the presence of an antigen. This immunosensor was based on the modulation of the electrochemistry of the surface bound redox species thionine (Thi). The model antigen was carcinoembryonic antigen (CEA) and the model epitope was the antibody of CEA (anti-CEA). Glassy carbon electrode surfaces were first drop-coated with a mixture of graphene, Thi and Nafion and air-dried. The electrode surface was then electrodeposited in HAuCl₄ solution to form Au nanoparticles (AuNPs). The resulted AuNPs were used to immobilize anti-CEA. Binding of CEA to the surface bound epitope resulted in the attenuation of the Thi electrochemistry. Under optimal conditions, the response of the label-free immunosensor had a liner range from 10 fg/mL to 100 ng/mL with a detection of 3.5 fg/mL (S/N=3).

Abstract: The corrosion behavior of Cu50Zr40Ti10 (at. %) in HCl and NaCl solutions was investigated. The corrosion current densities icorr in HCl and NaCl solutions increase with increasing Clconcentration when the Cl- concentration is <0.5 molL-1, then continuously increase in the former and decrease in the latter. The icorr is larger in the latter than in the former when the Clconcentration is <0.5 molL-1, while inversely for in 1 molL-1 Cl- solution. The corrosion potential Ecorr decreases with increasing Cl- concentration in HCl. However, the change of the Ecorr vs. the chloride ion concentration in NaCl solution appears down-up-down.

Abstract: In this investigation, dodecyl dimethyl(vinylbenzyl)ammonium chloride is applied to modify properties of polyethylene, and it is greatly focused on influences of it on the thermal properties and mechanical properties of this polymer. The results demonstrate that addition of this compound into polyethylene has little effect on thermal properties except for little improvement of its glass temperature, although it has reactive double bond in its molecular. Moreover, it is observed that it can enhance mechanical properties of this polymer and its addition has little change in colors of bulk materials. Therefore, it is believed that these excellent properties help to drive this antibacterial compound in applications.