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As an important parameter in various industries such as metal processing, agriculture, and medicine, the measurement of liquid flow can not only help us ensure the quality of production, but also improve production efficiency. In recent years, the development of computer vision has driven the development of flow detection towards intelligence. As a non-contact, fast measurement, high degree of automation, and high-precision measurement method, image processing technology has gradually been applied to various industries. Many researchers have invested a lot of research work on flow measurement. The representative research and solutions are summarized for more than 20 years, and describes the six main methods used in the flow detection of each fluid. It includes the following aspects: obtaining the flow through the liquid level detection; measuring the volume change rate by detecting the contour of the droplet; detecting the flow through a water ruler; adding markers such as tracer particles and tracer fluid to the liquid; using the interframe displacement of the water surface texture method. The article points out that the accuracy of the flow measurement is mainly affected by the liquid environment, and there are still many problems in the selection of light sources and algorithm research, and the true non-contact has not been achieved. At the same time, the future research trends and development directions are given. Through a large number of literature reviews, a review of the detection of fluid flow is provided, which provides many ideas for the next topic of milk flow detection.

Based on the rigorous coupled wave theory, the narrowband reflect spectral imaging characteristics on two-dimensional photonic crystal are analyzed, and two-dimensional photonic crystal sensor probe biological structure and photonic crystal biosensor system are constructed. The simulation proved that, when the adsorption medium at the surface of two-dimensional photonic crystal are different, the white light narrowband reflection resonance mode peak wavelength would drift, and the drift quantity of the peak wavelength and the refractive index of the adsorptive medium is in a linear relationship. Colored the space imaging spectra of photonic crystal, the changes of the adsorbate refractive index in different area of the photonic crystal surface can be observed , the adsorbate concentration changes can also be got. This conclusion can be applied to biochemical substances, pharmaceutical, biological molecules and environmental pollution detection.

Color recognition plays an important role in Machine Vision and Artificial Intelligence. In this article, a system based on FPGA applying to image acquisition, storage, display and color recognition is designed mainly to complete the recognition and calibration of fixed colors. Color images are captured by the analog camera in the system, which are decoded into standard YCbCr 4:2:2 data streams by AD chip. Then data streams are converted to the data of RGB video format by performing color space conversion. In the RGB color space, the color recognition method is proposed to identify the target color and calibrate on the display device. The experimental results demonstrate that the method can effectively achieve the identification of certain kinds of colors.

The aim of this study was to evaluate the effectiveness of regional hyperthermia combined with lamivudine (LAM) for treatment of chronic hepatitis B (CHB) and explore its possible mechanism. Forty CHB patients were randomly divided into the combination group (treated with regional hyperthermia and LAM ; n=17) and control group (treated with LAM alone ; n=23). Laboratory examinations were performed for hepatic function, hepatitis B virus (HBV) markers, and HBV DNA. Lymphocyte subpopulations including CD3+ (total T cells), CD4+CD8- (helper T cells) and CD4-CD8+ (cytotoxic T cells) were detected with flow cytometry. The side effects and tolerance were observed. Aspartate aminotransferase and HBV-DNA levels were significantly lower in the combination group than in the control group (P< 0.05). Hepatitis e antigen/antibody conversion rate was similar between the two groups, whereas the combination group had significantly higher rates of CD4+/CD8+ T cells than the control group (P< 0.05). Regional hyperthermia combined with LAM is superior to LAM alone for treatment of CHB, which may be achieved by enhancing cellular immune function.

A mathematical programming method for the analysis of the cable-stayed bridge with unilateral supports is presented. A detailed comparative study of the nonlinear phenomenon arising from the unilateral restriction at intermediate piers of the bridge is carried out. The characteristics of the unilateral supports can be described by a set of control variables which are of multi-folded constitutive relations with piecewise linearity. By using the parametric variational principle, it leads to the solution of a quadratic programming problem or to a linear complementary problem. The distinguished figures of the cable-stayed bridge with this kind of support are illustrated by numerical examples.

Based on analyzing the LC rear projective TV system, The OE (optical engine) for three penal LCoS rear projection TV system has been designed and modeled, The OE (optical engine) of LC rear projection display is the main component of the system, and it directly affects final performance, so the design of good color performance, high brightness and contrast and high optical efficient is the key of the system. From a commercial viewpoint, a compact size and light weight design makes it more competitive. LightTools software has a great many of powerful functions, such as modeling of optical system, analysis of illumination, modeling of machine structure, analysis of polarization and design of optical coating. We have used LightTools to analyses and optimize a whole optical engine of three penal LCoS projection display including illumination system, dividing and recombining of colors system, projection lens. At the end evaluated the performances of optical engine (parameters of output, uniformity, contract, resolution and so on).