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Photothermal therapy(PTT) is a promising treatment in the field of cancer treatment. In this paper, we review the recent progress of near-infrared(NIR) photoactivated gold nanorods(Au NRs) in PTT of tumors. The photothermal potentials of near infrared-I(NIR-I) and near infrared-Ⅱ(NIR-Ⅱ) and their applications in NIR-Ⅱ window cooperative chemotherapy(CT), photodynamic therapy(PDT), chemodynamic therapy(CDT) and multi-mode treatment of cancer are reviewed. In addition, we also discuss the challenges in this field, which provides ideas for the development of novel NIR-Ⅱ photothermal agents.

Magnetic resonance imaging(MRI) is one of the common detection methods in clinical medical imaging. The most commonly used longitudinal relaxation (T1) contrast agent in clinical diagnosis is Gadopentetate Dimeglumine(Gd-DTPA). Since their commercialization, gadolinium-based contrast agents have been studied extensively. This paper introduces the working principle of gadolinium-based inorganic nanoparticle(Gd IONPs) contrast agents, expounds the influence of the morphology, size, surface modification, oxygen vacancy of the inorganic nanoparticles, and looks forward to the design of gadolinium-based inorganic nanoparticle contrast agents.

The excessive use of antibiotics has led to an increase in bacterial resistance and the emergence of "superbugs", so the development of new antibacterial drugs is highly urgent. Rare earth elements possess unique physicochemical properties, and their applications in antibacterial field are gaining more and more attention. This paper mainly introduces three kinds of rare earth-based antibacterial nanomaterials:rare earth oxides, rare earth complexes, and rare earth doped composites. The antibacterial mechanisms of these materials are briefly described, and the current application of these materials is introduced. The prospects of the antibacterial applications of these materials are also given.

The incidence rate of tumor is increasing year by year, which is a serious threat to human health and life. In the process of human struggle against cancer, many promising nano-therapy platforms have been developed. Among them, magnetic mesoporous silica nanospheres(MAG-MSNs) is considered to be a promising nanomaterial. MAG-MSNs has the characteristics of easy preparation, low cost, easy modification and high biological safety, which improve the properties of the materials, and make the materials have a certain application prospect in photothermal therapy(PTT) and chemical kinetic therapy(CDT) of tumors. Therefore, this paper reviews the structural characteristics and preparation methods of MAG-MSNs with core-shell structure, as well as its research progress in the field of tumor therapy.

Using the nearest neighbor index,geographic concentration index,the Gini coefficient and Lorenz curve,this paper measures the space features of the distribution of the rural tourism scenic (spots) in Shanghai.The research results showed that 1) Shanghai Rural tourism scenic (spots) of the nearest neighbor index is 0.656,indicating that their spatial distribution is cohesion;2) its geographic concentration index is 87.200,indicating that the spatial distribution of the relative concentration,and with the results matched the nearest neighbor index;3) its Gini coefficient is 0.9647,C= 0.0353,which shows that spatial distribution is relatively concentrated.Further,the paper try to explore the impact of the fiscal revenue,gross industrial output value,agriculture park infrastructure investment,the resident population density and land area on the spatial distribution features,and to put forward more reasonable layout scheme to promote the development of rural tourism in Shanghai.

Web application has been popular in various fields of social life.It becomes more and more important to study the reliability of Web application.In this paper the definition of Web application failure is firstly brought out,and then the definition of Web application reliability.By analyzing data in the IIS server logs and selecting corresponding usage and information delivery failure data,the paper study the feasibility of Web application reliability assessment from the perspective of Web software system based on IIS server logs.Because the usage for a Web site often has certain regularity,a new measurement of workload in Web application reliability assessment is raised.In this method,the unit is removed by weighted average technique;and the weights are assessed by setting objective function and optimization.Finally an experiment was raised for validation.The experiment result shows the assessment of Web application reliability base on the new workload is better.

This paper investigates the beamforming design based on perfect channel state information (CSI) in a multi-user downlink network.The base station (BS) is equipped with multiple antennas while each user is equipped with one antenna.The BS will communicate with users through transmit beamforming technology.This paper maximizes the sum rate of all users with the constraint of transmitting power.The object function is complex and non-convex which would bring difficulties to solve this problem.This article proposes a beamforming scheme based on zero-forcing criterion.Based on this method,the original problem will be divided into two sub-problems which can be solved respectively.The simulation results suggest that the proposed beamforming scheme achieves better performance compared with the traditional leakage based beamforming scheme.

In cognitive MIMO system,cognitive users communicate by opportunistically accessing the spectrum of primary user.In the process of transmission,cognitive users to primary users and other cognitive users will produce big interference.In order to eliminate the interference between cognitive users,this paper puts forward the interference elimination algorithm based on time division multiplexing.The simulation results show that when the SNR is less than 6 dB,under the unit bandwidth,the throughput of cognitive system adopting the proposed algorithm in this paper can increase 0.5 bit/s,at the same time,the average energy efficiency increased 1.2 bit·s-1·w-1.

This paper gives an interference coordination strategy in heterogeneous network scenarios.Firstly,establish a heterogeneous network framework,reduce intercell interference and interlayer interference,at the same time,let the network gain higher capacity and data rate,on the basis of the application of the dynamic interference coordination scheme.This paper briefly describes the working process of the interference coordination scheme,and analyzes the performance of this scheme through simulation.At last,the result confirms the promotion of system performance.

Wideband code division multiple access (WCDMA) is a 3G wireless communication network.The common pilot channel in downlink of WCDMA provides an effective method to estimate the channel impulse response.In this paper,universal software radio peripheral (USRP) is utilized to sample and process WCDMA signal which is emitted by China Unicom base station.Firstly,the received signal is pre-processed with filtering and down-sampling.Secondly,fast algorithm of WCDMA cell search is fulfilled.Thirdly,frequency shift caused by USRP′s crystal oscillator is checked and compensated.Eventually,channel impulse response is estimated.In this paper,MATLAB is used to describe the above algorithm and field programmable gate array (FPGA) is used to simulate algorithm.In the process of simulation,pipeline and IP core multiplexing are introduced.In the case of 32 MHz clock frequency,FPGA simulation time is 80.861 ms.Simulation results show that FPGA is able to estimate the channel impulse response quickly and accurately with less hardware resources.

This paper studies the user energy scenarios absorption efficiency optimization in multiuser broadcast channel.This paper assumed that the user terminals using full-duplex mode that the user receive uplink energy information and transfer uplink energy at the same time.In this paper,we maximize the minimum user uplink transmit power,when we ensure that each user′s energy absorption efficiency is greater than a threshold value and satisfies the premise of the base station downlink power emission limits.Finally,the simulation results confirm the effectiveness of the proposed algorithm.

A new pH-responsive nanoparticle is constructed in this paper. Aminated mesoporous silica(SiO2) nanorods are synthesized by "one-pot method" and benzotriazole (BTA) is embedded into the nanorods. The corrosion resistance of the coating is evaluated by coating Q235 carbon steel substrate with an epoxy resin containing nanoparticles. The electrochemical impedance spectroscopy showed that the aminated mesoporous SiO2 coating loaded with BTA had significant long-term anti-corrosion behavior compared with the control group.

In this paper,the concepts of the dual space and the transposed mapping in linear algebra were enunciated,which were not well known by physicists. Based on the proposed concepts,two kinds of vectors named as contravariant vector and covariant vector for the general linear group and their transformation laws were fully explained and illustrated.

The material development trend and key preparation technique of barium and nickel co-doped potassium niobate (1-x)KNbO3-xBaNi0.5Nb0.5O3-δ(KN-xBNNO) thin films were mainly focused on in this paper. Besides, the microstructure, as well as combining state and Raman phonons modes of KN-xBNNO thin films were investigated.

Based on social media location data,this paper uses K-means clustering method to achieve the identification of urban functional areas in Shanghai by analyzing the change pattern of Tencent user density heat values at the grid scale of 500 m×500 m at different times in the city. The different areas of Shanghai are divided into industrial areas,urban residential areas,suburban residential areas,integrated urban functional areas,rural village areas,agricultural land,mudflat and unused land areas based on the functional area types. The feasibility of using social media location data for urban functional area identification is demonstrated by comparing and analyzing the identification results with high-resolution satellite images and point of interest(POI) data. The cost of data acquisition of this method is low. And it is easy to be used,which provides a new idea and methodology for the division of the main functional areas in other urban regions.

In this paper,a probabilistic analysis method of structural condition properties of long-span cable-stayed bridge based on structural health monitoring (SHM) was proposed. The example of the main navigation channel cable-stayed bridge and a numerical example were adopted to validate this method. In the example of the main navigation channel cable-stayed bridge,the regression model was used to analyze the environmental effect and the sequential probability ratio test was used to identify the different structural condition. In the numerical model,the environmental effect was expressed by using factor analysis and the structural damage was identified based on outlier analysis for probabilistic recognition.

In this paper, we study the positive stationary solutions of the bistable reaction-diffusion equation in one-dimensional bounded domains. We construct some bistable nonlinear terms, and use phase plane analysis and the theory of ordinary differential equation to prove the existence of multiple positive stationary solutions of the corresponding equation.

In this paper, we introduce the concept of complex $L_p$ mixed projection bodies by giving its support function. Then, we establish the complex $L_p$ mixed Petty projection inequalities. Finally, the monotonicity for complex $L_p$ mixed projection bodies is obtained.

In this paper, we mainly study the properties of weak CM rings. It is a special class of Noetherian commutative rings, including Cohen-Macaulay rings, excellent rings and generalized Cohen-Macaulay rings, which can be characterized by local cohomology modules. We will prove that if R is a weak CM ring, then every finitely generated algebra of R and the I-adic complete ring of R with respect to any ideal I of R are still weak CM ring.

In this paper, we consider the existence and nonexistence of positive solutions for a class of fractional q-difference equation. We obtain sufficient conditions on the existence of one positive solution, two positive solutions and no positive solution by applying Guo-Krasnosel’skii fixed point theorem on cones.

It is well known that a semigroup is a Clifford semigroup， if and only if it is a strong semilattice of groups， and the class of π-groups is the generalization of groups in the range of π-regular semigroups. Congruence is an important tool when studying the characterization and structure of a semigroup. In this paper， we consider the regular congruences on a strong semilattice of π-groups， and give necessary and sufficient conditions for a congruence on a strong semilattice of π-groups to be a regular congruence.

In this paper, a stochastic chemostat model with general response functions is studied. Meanwhile, it first proves the existence and uniqueness of the globally positive solutions for the model. Secondly, this article gives some sufficient conditions for the extinction of microorganisms, and further proves that under certain conditions, microorganisms will continue to exist in the chemostat.

We consider a consumer-resource model with diffusion term in this paper. Firstly， we obtain the conditions for the local stability of the positive equilibrium and the existence of Hopf bifurcation by studying the characteristic equation of the model. Secondly， we prove the existence of spatial homogeneous / nonhomogeneous periodic solutions， and give the conditions for determining the bifurcation direction and the stability of the bifurcation periodic solutions. Finally， a numerical example is given to verify our conclusion.

In this paper, we study the monostable reaction-diffusion equation with the first boundary condition in one-dimensional bounded domains. For any given positive integer n, a class of monostable nonlinear terms is constructed such that there are at least n positive equilibrium solutions.

The paper considers a class of coupled system of semilinear evolution equations defined on infinitedimensional Banach spaces. A finite-dimensional invariant manifold of infinite-dimensional dynamical system generated by the coupled system can be used to derive a reduction principle. More precisely, making use of the invariant manifold, we can obtain a finite-dimensional system (also called a reduced system), and clarify the connection of attractor and equilibrium between the original system and the reduced system.

The dynamic behavior of commensal symbiosis system with both feedback control and Allee effect is complex. In this paper，the influence of additive Allee effect on the dynamical behavior of the system has been studied based on the feedback control commensal symbiosis system. It is proved that the conditions for the existence of positive equilibrium point are sufficient to ensure the global attractive of the system. By constructing an appropriate Lyapunov function，the sufficient conditions for the global stability of the equilibrium point are obtained. The research shows that Allee effect does not affect the stability of the equilibrium point of the feedback control biased commensal symbiosis system，but affects the position of the equilibrium point.

The relevance between Baidu Index during African Swine Fever occurred from May 2018 to September 2019 in China and the breakout of the disease was studied in this paper. By means of fitting the data of 17 districts, the area where African Swine Fever would outbreak was successfully predicted by the binary Logistic regression model 3, 2, 1 weeks in advance and in that week respectively. The results showed that the accuracy of the prediction was over 91.2% without exception, which could be a valuable supplement to the traditional monitoring system.

In this paper, the performance of multi-user pair two-way full-duplex decode-and-forward systems through decoding and forwarding (DF) protocol relaying with imperfect channel state information(CSI) was studied. By configuring massive antennas, spectral efficiency (SE) could be enhanced greatly. Zero-forcing (ZF) was used to receive and precode the signal reaching the relay, and the closed-form expressions for SE were derived. Meanwhile, a power scaling law related to the number of antennas was proposed, and the value range of scaling factor under the condition of fixed and variable pilot power was discussed. Spectral efficiency was maintained stable and the transmission power was reduced by the proposed scaling law. The simulation results showed that SE was improved significantly with the increase of antenna number, which certified the improvement of SE by massive multiple input multiple output (MIMO) system.

Depending on the current standard protocols for 5G broadcasting system, a joint estimation method based on primary/secondary synchronization signal(PSS/SSS)and cell reference signal(CRS) was proposed in this paper, which used discrete Fourier transform(DFT) to reduce noise. The PBCH channel state could be estimated more accurately in the scene of low signal-to-noise ratio, large frequency deviation and high channel dynamic changes by the above method. The simulation results showed that the proposed estimation methods performed better than the traditional schemes, by which the PBCH channel estimation ability in the 5G broadcasting system could be improved significantly.

In this paper a progressive prototype network based on meta-learning was analyzed. With the proposed network only a few image samples were required to complete model training and new tasks could be quickly identified with outstanding generalization ability. The model training efficiency was improved and the training time was reduced dramatically by using the constructed progressive training strategy.

In this paper, a transfer pattern recognition method for meta-policy learning in the Internet of Things was analyzed. Firstly, the staged meta-learning (ML) neural network was used to construct a meta-learner. Secondly,the data augmentation (DA) technology was adopted to preprocess the image. Finally, multiple modules such as decision verification were used for collaborative recognition, which could effectively resist the influence of harsh environments on signals. The theoretical analysis and simulation results demonstrated the effectiveness of the modulation pattern recognition method.

In this paper, firstly common models and datasets in the field of knowledge tracing (KT) were organized and the development and progress of them were collated. Secondly, the correlative theory as well as principles and datasets were overviewed. The advantages and disadvantages of KT models with different structures were analyzed. Moreover, the future development directions of the KT field were discussed, and three important directions of data representation, cognitive modeling, and model interpretability were proposed respectively, and the prospect for the future was predicted.

In this paper a dual path machine learning modulation pattern recognition method was analyzed for intelligent Internet of Things. Based on meta-learning network and the combination of fuzzy classification and precise classification, the types of identification signals were increased, and high identification accuracy was maintained in the low signal-to-noise ratio environment at the same time which could effectively reduced the impacts of harsh environment to the signal. The theoretical analysis and simulation results demonstrated the effectiveness of the proposed method.

Based on the elite space and the relation model between the space of flows and the urban space,the paper analyzed the mechanism and consequence of the new urban spatial polarization.Using the Shanghai sixth census data and the sample data,the paper discussed the new phenomenon of urban spatial polarization in the information age by the location quotient analysis and GIS spatial analysis.The research result showed that the space of flows influencing urban spatial polarization through the elite space is a higher level agglomeration,including the spatial concentration of the human capital,the concentration of wealth and knowledge of science and technology.

This paper mainly forcuses on the construction technology of the Shanghai Metro Line 10 which is to cross the upper operating Shanghai Metro line 1. The difficulties of the crossing section, construction measures and actual construction conditions are described and discussed. Acturally, this paper is mainly talking about how to control the implementation of the tunnel through work through the three stages of crossing tunnel, namely pre-crossing, in-crossing and post-crossing, ensuring the settlement deformation of the through tunnel and its upper part of the buildings in safe and controllable range. It is through the discussion of the crossing construction to provide a certain reference value to the upper part crossing of future trail traffic.

This paper extracts five emotional features according to the emotions that may affect in learning,and introduces psychological theory to generate emotional susceptibility matrix and to draw personalized emotion vector by different learners' temperament type vectors,which all reflect the emotional state of the learners more realistically.This paper also recommends learners of different emotions and emotional intensity to learn the knowledge of different levels of difficulty,making learning more humane.Temperament type is a temperament doctrine evolved based on the Hippocratic humoral theory and can be a good expression of human personality foundation.Temperament type has been introduced into affective computing in the E－Learning in this paper so that computer can be better on the classification of the learner's personality and learning state and realistically be individualized.

This paper analyses the cooperation mechanism of the interprovincial scientific research from the perspective of symbiosis theory by adopting the research methods including literature analysis,social network analysis,mathematical statistics and calculating analysis.The result indicates that there exists the symbiosis in interprovincial sports scientific research among the symbiosis units (Except of Tibet and Taiwan).However,the degrees of symbiosis and correlation are varied in between.Provinces are inclined to select cooperative partners abundant in scientific paper,which shows a regular regional distribution.Symbiosis model mainly refers to the symmetric reciprocity model,but still there is asymmetric reciprocity model.The symbiosis environment presents the feature of large number of research groups and high degree of different schools.The symbiosis interface consists of media interface and nonmedia interface.Therefore,the paper suggests constructing a symbiont of coordinated regional integration with three layers:the Core Layer (Beijing,Shanghai and Guangdong),the Radiation Center Layer (Tianjin,Jiangsu,Zhenjiang,Fujian,Anhui,Shandong,Henan,Liaoning and Hubei) and the Margin Layer (the rest 22 provinces).

In this paper,on account of the features of node trust relationships and smaller transaction possibilities in peer-to-peer network,a peer-to-peer trust network model is set forth based on its core nodes.Nodes in the network model are clustered according to their public reputation and private credibility.This paper discusses core nodes and ordinary nodes respectively relying on their node reliabilities and gives relevant solutions.The simulation results show that the trust model not only has robustness of anti-malicious node attacks but also has lower amount of assessment computation and communication overhead for network resources search.

This paper takes 11 Prefecturelevel cities of Zhejiang Province as the research object,and analyses the formation mechanism of the highway network and hinterland,as well as the overlapping of administrative regions and hinterland.Further,the paper divides the hinterland into different areas according to their Transport accessibility by means of GIS technology.The result result will not only contribute to a better knowledge of the influential region and comprehensive power of each city in Zhejiang Province,but also to the urban planning of this province.

γ-aminobutyric acid (GABA) is a kind of natural non-protein amino acid, which widely exists in animals, plants and microorganisms. GABA participates in various metabolic pathways and processes as signal molecules in vivo. Recent studies have found that GABA could effectively reduce blood pressure of patients with hypertension and can prevent hypertension through long-term dietary intake. As one of the most produced vegetables in the world, tomatoe (Solanum lycopersicum) is favored by consumers in their daily diet. In addition, it is also one of the crops with the highest GABA content in fruits and vegetables. However, GABA in tomato mainly exists in free amino acids form, which is greatly accumulated at green fruit stage and greatly reduced at fruit ripening stage. At present, the GABA content in tomato fruit at ripening stage has been increased by hybridization breeding, mutagenesis breeding and gene editing. This paper summarized the researches on tomato GABA breeding in recent years, and discussed the application status and prospect of gene editing technology in tomato. We also put forward the prospect of how to proving tomato GABA content by gene editing technology in the future.

In this paper, a new dehydrating agent was applied to the dehydration of water hyacinth (Eichhornia crassipes), and the fresh weight, nitrogen and phosphorus content of samples were measured by nitrogen distillation and microwave digestion with automatic sampler and ICAP7600 inductively coupled plasma emission spectrometer, respectively. The results show that under the treatment of 30 μL·m-2 dehydrating agent, the treated samples of water hyacinth can have obvious symptoms such as withered and yellow leaves and wilted stems in 4-6 d, and the fresh weight decreased about 50% after 12 d's treatment. In addition, we found that after 12 days of treatment with 60 μL·m-2 and 120 μL·m-2 dehydrating agent, the changes of nitrogen and phosphorus content in the samples of water hyacinth are not significant, which shows that the treatment of water hyacinth with the dehydrating agent will not cause nitrogen and phosphorus enrichment to the external environment.

In this paper, the hydrogen-producing bacteria XY-18 and hydrogen-producing bacteria XY-72 were used to carry out hydrogen-producing experiments at the temperature of 20℃. The gas production, hydrogen production, cell dry weight, pH and glucose utilization rate of both were detected. The results showed that the total gas production of XY-18 was 4 333 mL·L-1, the total hydrogen production was 3946 mL·L-1, the cell dry weight was 1.53 g·L-1, the optimal pH range was 4.5-4.9, and the glucose utilization rate was 96% at the temperature of 20℃. Combined comprehensive analysis of parameters including hydrogen production, cell dry weight and pH value showed that hydrogen-producing bacteria XY-18 is a low-temperature anaerobic hydrogen-producing bacteria that can produce hydrogen under at low temperature.

In recent years, Matcha has attracted more attention from many consumers worldwidely due to its unique flavor. Drinking or eating Matcha has multiple health efficacies. Herein, this paper reviewed the potential effects of Matcha processing methods on Matcha quality, the health efficacies of Matcha, and the current R&D situation of its related products, in order to provide scientific basis for its further research and development.

Graphite carbon nitride nanosheets (g-C3N4NSs) exhibite excellent electrochemiluminescence (ECL) performance and good film-forming properties. In this paper, g-C3N4NSs were used as an ECL material to be fixed on a glassy carbon electrode(GCE). A molecularly imprinted polymer (MIP) was prepared by molecular self-assembly with chlorpyrifos (CPF) as template molecule and methacrylic acid (MAA) as functional monomer. The polymer was then introduced into g-C3N4NSs modified electrode to construct a MIP-ECL sensor. After removing the template molecule, the sensor can specifically recognize CPF. Based on the specific recognition and quenching effect of CPF on the ECL signal of g-C3N4NSs, the high sensitive and selective detection of CPF was achieved. The sensor shows a linear response to CPF in range of 1.0×10-8-1.0×10-4 mol·L-1 and limit of detection (LOD) of 5.0 nmol·L-1. It was used to detect CPF residues in vegetables and the results were satisfactory.

This article briefly introduces the application of glucose oxidase(GOx) in cancer treatment research, including monotherapy(starvation therapy(ST), oxidation therapy), bimodal therapy(synergistic chemotherapy(CT), chemical dynamic therapy(CDT), sonodynamic therapy(SDT), photodynamic therapy(PDT), photothermal therapy(PTT), gas therapy, radiotherapy), and GOx-mediated multimodal combination therapy(synergistic immunotherapy/CDT/PTT/SDT). This paper systematically reviews the research progress and latest developments of GOx-mediated cancer therapy.

Primary liver cancer is currently a cancer with a high fatality rate, which has always been a difficult problem for people to overcome. How to reduce the pain of cancer patients and improve the treatment effect during the treatment process is a hot spot for scholars from all over the world. Transcatheter arterial embolization(TAE) is considered as a minimally invasive, purposeful and low-risk treatment, and has become the first choice for non-surgical treatment of primary liver cancer. TAE kills the tumor cells via blocking the hepatic artery of the solid tumor through microcatheter, which can hinder the supply of oxygen and nutrition to the tumor. The effect of interventional embolization is attributed to the design and use of embolic materials.Therefore, based on embolic materials, this paper reviews different kinds of embolic materials, summarizes the research progress of embolic microspheres in primary liver cancer, and provides ideas for the development of new embolic materials.

Ideal bone regeneration materials should have good biological activity and mechanical strength. Previous studies have shown that silicocarnotite (Ca5(PO4)2SiO4, CPS) bioceramic has good biological activity, which can induce osteogenic differentiation of bone marrow matrix stem cells and promote the formation of new bones in vivo. This paper investigated the effects of α-silicon nitride (α-Si3N4) on microstructure, bend strength, apatite forming ability and cytocompatibility of CPS bioceramic. The results show that the addition of α-Si3N4 can improve the bending strength of CPS bioceramic to some extent, and when its mass fraction is 1.5%, the bending strength of Si3N4-CPS ceramic is 1.2 times of that of pure CPS ceramic at the same sintering temperature. The simulation body fluid immersion experiment shows that Si3N4-CPS bioceramic has good apatite forming ability. The experimental results of CCK-8 cytocompatibility test show that Si3N4-CPS bioceramic has no obvious cytotoxicity, exhibiting a good biocompatibility.

As an active non-contact imaging technology, structured light 3D imaging technology can be used not only preserve 3D spatial information of objects, but also to reconstruct the 3D spatial image of objects completely, which had a great significance in the restoration of object contour with high precision and resolution. In this paper, three imaging methods based on different structured light are introduced, and the imaging methods based on surface structural light and its key technologies applied were mainly introduced. Finally, 3D imaging technology of structural light was summarized and prospected.

In recent years, the application of biochar materials as metal-free catalysts has attracted widespread attention. In this paper, the biochar based on melon seed shell was prepared by the pyrolysis under inert atmosphere at 800℃ melon seed shell activated catalysts(MSAC). The physicochemical properties of MSAC were characterized by scanning electron microscopy (SEM), low temperature N2 adsorption/desorption isotherm, and Raman spectroscopy. The adsorption capacity and peroxymonosulfate(PMS) activation ability of MSAC for the removal of rhodamine(RhB), malachite green(MGO), methyl orange(MO), and crystal violet(CV) were investigated. The removal result in the MSAC/PMS system far exceeded the adsorption capacity of MSAC in the absence of PMS, suggesting that the organic dyestuff was largely removed as a result of degradation in the MSAC/PMS system. Compared with commercial biochar, MSAC showed a lower adsorption capacity. While, the defect degree of MSAC is high, and it can effectively activate PMS to degrade organic dyestuff.

The bionic snake-like robot with good adaptability to complex environment had a wide application prospect. Aiming at the abrupt change at the beginning of serpentine movement and the deviation in the process of movement, the optimal equation was put forward and the gait of serpentine movement was planned in this paper. Then research was focused on the analysis of parameters in motion equation which had an important influence on velocity and migration of snake-like robot and the compensation of motion gait offset was implemented. Finally, Webots simulation experiment result showed that the shape, offset and turning characteristics of the snake-like robot were determined by the motion control parameters, and the lateral offset could be eliminated by specific parameter, which had important enlightenment and reference significance in motion control of snakelike robot.