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For large scale electrospun (e-spun) nanofibre production, a variety of electrospinning (e-spinning) techniques such as multi-needle e-spinning and needleless e-spinning have been developed recently. In this paper, we propose a new design of efficient needleless e-spinning for fabrication of polymer nanofibres. A circular rotary bead wire driven by a DC motor is used as needleless electrode. When e-spinning, numerous solution jets are generated from the bead wire electrode through wrapping the electrode with solution from the solution brush. The design, construction and testing of the novel needleless e-spinning from rotary bead wire electrode are described in detail. The average diameter of the resultant polyvinyl pyrrolidone (PVP) fibres produced under 15–30 kV is around 200 nm. This needleless e-spinning technique may be promising for mass production of nanofibres.

Ultrathin indium oxide (In2O3) microtubes were successfully fabricated by electrospinning, magnetron sputtering and followed calcination. The hollow In2O3tubes were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV-visible spectroscopy. Outer diameter of the microtubes was in the range of 700-900 nm, and inner diameter was about 400-600 nm. Optoelectronic properties of the In2O3tubes were investigated by irradiation of UV light with different wavelengths (254, 308 and 365 nm). It was found that the In2O3microtubes had a fast and strong response to UV irradiation.

Besides the conductive patterning substrate, spatially well-defined microfibrous architectures can also be electrospun by using an insulating topographically structured collector (e.g.a nylon fabric). In both cases, it is proposed that the formation of the electrospun microfibrous patterns can be ascribed to the re-distribution of static electric field whenever collectors with different topography are introduced. Moreover, a series of simulation of the static electric field for various collectors (e.g.flat Al foil, conductive and insulating patterned substrates) have been systematically made to illustrate the formation mechanism, respectively. Our results are considered to warrant further scientific understanding on the formation of electrospun microfibrous patterning constructs, and helpful for easy generation of spatially defined architectures which have applications in a variety of areas such as tissue engineering, cell adhesion, proliferation and migration,etc.

On the basis of discussing the basic features of rural power grid planning project and the status quo, this paper has constructed evaluation index system of the rural power grid planning project, and based on the characteristics of its particularity and indicators, established a fuzzy comprehensive evaluation model based on set pair analysis. It has carried on the comprehensive evaluation to some county in power grid planning project to verify the validity of the selected method. It will provide referential basis for the scientific decision of county power enterprises.

On the basis of the basic theory of post evaluation of power transmission and transformation project in this paper, it selects the multi-level fuzzy comprehensive evaluation method to evaluate the project. Take the Qian Fangzi power transmission and transformation project as an example;It has carried on the empirical research. From the process of the project implementation, economic benefits, the influence of the project, sustainability evaluation and so on, it has achieved good results and proved the effectiveness of the proposed evaluation model.

Fluorescent crossbar arrays and microropes of fluorescein/PMMA and rhodamine B/PS composite nanofibers have been fabricated via centrifugal electrospinning, respectively. The morphology and structures were measured by SEM and fluorescence microscope. The two as-spun fluorescent structures have potential applications in fluorescent security, fluorescent detection, and so on. By regulating the number of the nanofibers consisted in the microropes, the fluorescence intensity of the microropes can be manipulated, as well as the mechanical property of individual nanofibers, which can be calculated easily by testing that of the whole microrope.

To obtain one-dimensional temperature distribution in gas combustion chamber, firstly construct the relationship between the boundary multi-wavelength radiation intensity and one-dimensional temperature distribution including the flame and the medium by combining the radiative transfer equation and gas radiation characteristics. Then convert the reconstruction problem of temperature distribution into an inverse radiation problem which aims at seeking the target minimum. The BFGS algorithm was used to solve this inverse radiation problem in the numerical experiment. The results of numerical experiments showed that this method could accurately reconstruct the combustion temperature field, and even taking into account of the small random measurement errors, the reconstruction method was still able to achieve a rather ideal effect.

The stand or fall of power plant operation is extremely important, so we need to analyze the comprehensive financial capacity of power plant. This paper evaluates the economic benefit of Datang Baoding thermal power plants' expansion project based on the fuzzy comprehensive evaluation mathematical model, to determine the effectiveness of the project after implementation.

Electric power industry is the basic industries. The power plant will face many risk factors in the investment of time. We need to make these risk factors analyzed, so as to explore the validity and feasibility of the power plant's investment. Based on studying the mutual relationship of risk factors in the power plant investment, the paper puts forward the causal relationship of power plant's risk investment decision-making evaluation, and quoting three power plants uses the grey correlation method, the analytic hierarchy process and fuzzy evaluation method to evaluate reasonably and effectively each risk factors of influencing the investment decision.

Green building is the inevitable trend of future building development, many countries have formed their own green building assessment system. For now at stage of rapid development of urbanization in China, the establishment of green building assessment system and its further improved are of great significance. As a scientific evaluation system, the index of green building assessment system should have a sound weights system. This article attempts to apply the Analytic hierarchy process method to the Green Building evaluation standards of China, which intend to explore the method of constructing the weight system of China Green Building Evaluation standards.

With the rapid economic growth, the resources and environment condition gradually tightens. We need to accelerate the development of hydropower resources. The electric power produced by the hydropower plants is a kind of green power energy. The quality analysis of hydropower production operation condition will become the focus of our researching. In paper we construct a reasonable set of evaluating indicator system of hydropower production operation and have used the BP neural network and fuzzy quality synthetic to analyze the production and operation condition of several hydropower plants. Help hydropower to summarize experience.

From a petroleum ether extract of neem oil (Azadirachta indica A. Juss) the new tetrahydrofuranyl diester 1 was isolated as an anti-bacterial constituent. 1 showed significant activities against three standard bacterial strains, including Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922 and Salmonella enteritidis CMCC (B) 50041.

1. There are increased numbers of circulating CD34(+) progenitor cells for eosinophils in patients with atopic asthma, with a further increase following allergen exposure or spontaneous worsening of asthma. We investigated the expression of IL-5 and IL-5Ralpha receptor in circulating CD34(+) progenitor cells in allergic asthmatics and the effects of corticosteroids. 2. Using double-staining techniques, up to 50% of CD34(+) cells expressed intracellular IL-5, and by RT - PCR, there was significant expression of IL-5 mRNA. When cultured in a semi-liquid methylcellulose medium, there were more eosinophil colony-forming units grown from asthmatic non-adherent mononuclear cell depleted of T cells in the presence of the growth factors GM-CSF, SCF and IL-3, but not of IL-5. 3. An anti-IL-5Ralpha receptor antibody and an anti-sense IL-5 oligonucleotide reduced the number of eosinophil colony forming units. No IL-5 mRNA or protein expression on T cells was observed in asthmatics or normal subjects. In the presence of growth factors including IL-5, there were significantly greater colony numbers with eosinophilic lineage grown from either asthmatics or normal subjects. 4. Dexamethasone (10(-6) M) suppressed IL-5 mRNA and protein expression in CD34(+) cells, and reduced eosinophil colony-forming units in asthmatics, but not in normal subjects. Dexamethasone did not change the expression of IL-5Ralpha on CD34(+) cells. 5. We conclude that there is increased expression of IL-5 on blood CD34(+) cells of patients with asthma and that this expression may auto-regulate eosinophilic colony formation from these progenitor cells. Corticosteroids inhibit the expression of IL-5 in circulating CD34(+) progenitor cells.