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During 2018-2020, we isolated 32 Eurasian avian-like swine influenza A(H1N1) viruses and their reassortant viruses from pigs in China. Genomic testing identified a novel reassortant H3N1 virus, which emerged in late 2020. Derived from G4 Eurasian H1N1 and H3N2 swine influenza viruses. This virus poses a risk for zoonotic infection.

Culture supernatants from GC cells inhibit neutrophil apoptosis in vitro. Neutrophils were untreated or stimulated with 20% culture supernatants from GC cells (AGS) for the indicated times. The rate of apoptosis of the cells was analyzed by staining with FITC-conjugated Annexin V and propidium iodide and determined by flow cytometry. The values represent the mean {plus minus} SE of four separate experiments: (A) representative image; (B) statistical results.

Association of CD66b+ cells in IM and TC with clinicopathological characteristics.

Univariate and Multivariate Analyses of Factors Associated with Overall Survival (OS) and Progression-free Survival (PFS).

Clinical characteristics of the 573 gastric cancer patients

Primers for real-time PCR

The accumulation of neutrophils in the invasive margin and IL-17 expression predicts reduced survival in GC patients. 245 paraffin-embedded GC samples were stained with an anti-CD66b Ab. The patients were divided into two groups according to the median CD66b+ neutrophil density. Overall survival and progression-free survival of 245 patients; High infiltration of neutrophils in the invasive margin was associated with reduced survival in different TNM stages. Cumulative overall and progression-free survival time were calculated using the Kaplan-Meier method and analyzed by the log-rank test (A). Kaplan-Meier analysis of progression-free survival and overall survival stratified by IL-17 expression in GC patients (B).

Association of CD66b+ and MMP-9+ cells in the invasive margin of GC (n = 245).

Based on STL (stereo lithography) format file and with Microsoft Visual C++ 6.0 programming language, a 3D printing slicing software appropriate for the surface strengthening of the parts has been developed, which includes three functions: 3D model import, model slicing and data export. Through the grouping of STL model triangle facets before slicing, the judgment times of the relationship between the triangle facets and the cutting planes are reduced, and the slicing efficiency is improved. Aiming at the fact that the surface should be strengthened when the part is formed by using of 3D printing process, the function of identifying and marking the surface of the geometric entity is accomplished in the slicing software, which can strengthen the surface of the part according to the user’s requirements. The developed slicing software can provide an entity slicing file for 3D printing equipment. The related functions can be adjusted and improved according to user’s needs, which makes the software convenient and flexible to use.

There exist differences in the epidemiological characteristics, clinicopathological features, tumor biological characteristics, treatment patterns, and drug selections between gastric cancer patients from the Eastern and Western countries. The Chinese Society of Clinical Oncology (CSCO) has organized a panel of senior experts specializing in all sub‐specialties of gastric cancer to compile a clinical guideline for the diagnosis and treatment of gastric cancer since 2016 and renews it annually. Taking into account regional differences, giving full consideration to the accessibility of diagnosis and treatment resources, these experts have conducted expert consensus judgment on relevant evidence and made various grades of recommendations for the clinical diagnosis and treatment of gastric cancer to reflect the value of cancer treatment and meeting health economic indexes in China. The 2021 CSCO Clinical Practice Guidelines for Gastric Cancer covers the diagnosis, treatment, follow‐up, and screening of gastric cancer. Based on the 2020 version of the CSCO Chinese Gastric Cancer guidelines, this updated guideline integrates the results of major clinical studies from China and overseas for the past year, focused on the inclusion of research data from the Chinese population for more personalized and clinically relevant recommendations. For the comprehensive treatment of non‐metastatic gastric cancer, attentions were paid to neoadjuvant treatment. The value of perioperative chemotherapy is gradually becoming clearer and its recommendation level has been updated. For the comprehensive treatment of metastatic gastric cancer, recommendations for immunotherapy were included, and immune checkpoint inhibitors from third‐line to the first‐line of treatment for different patient groups with detailed notes are provided., The Chinese Society of Clinical Oncology (CSCO) organized a panel of senior experts specializing in all sub‐specialties of gastric cancer to compile the clinical guideline for gastric cancer in 2016 and then renewed it every year. The 2021 CSCO Clinical Practice Guidelines for gastric cancer covered the diagnosis, treatment, follow‐up and screening.

The pollution of micro/nanoplastics in the natural environment is becoming increasingly serious, but the potential effects of nanoplastics on crops remain unclear. In the present study, the effects of polystyrene nanoplastics (PS-NPs) with a particle size of 80 nm on the chlorophyll content, antioxidant enzyme activity, and nutritional quality of

The present study investigated the role of abnormally expressed mRNA and long noncoding RNA (lncRNA) in the development of colorectal cancer (CRC). We used lncRNA sequencing to analyze the transcriptome (mRNA and lncRNA) of five pairs of CRC tissues and adjacent normal tissues. The total expression of mRNAs and lncRNAs in each sample was determined using the R package and the gene expression was calculated using normalized FPKM. The structural features and expression of all detected lncRNAs were compared with those of mRNAs. Differentially expressed mRNAs were selected to perform Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. The functional analysis of differentially expressed lncRNAs was performed by analyzing the GO and KEGG enrichment of predicted cis-regulated target genes. A total of 18.2 × 108 reads were obtained by sequencing, in which the clean reads reached ≥ 94.67%, with a total of 245.2 G bases. The number of mRNAs and lncRNAs differentially expressed in CRC tissues and normal tissues were 113 and 6, respectively. Further predictive analysis of target genes of lncRNAs revealed that six lncRNA genes had potential cis-regulatory effects on 13 differentially expressed mRNA genes and co-expressed with 53 mRNAs. Up-regulated CTD-2256P15.4 and RP11-229P13.23 were the most important lncRNAs in these CRC tissues and involved in cell proliferation and pathway in cancer. In conclusion, our study provides evidence regarding the mRNA and lncRNA transcription in CRC tissues, as well as new insights into the lncRNAs and mRNAs involved in the development of CRC.

To evaluate the effect of oral nutritional supplementation (ONS) on the postdischarge nutritional status and quality of life (QoL) of gastrointestinal cancer patients after surgery.A multi-center study was conducted on gastrointestinal cancer patients who received surgical treatment from 2013-2015. All patients were screened using the Nutrition Risk Screening 2002 (NRS 2002) to assess nutritional risk. Patients with nutritional risk were randomized into two groups: patients in the study group (n=55) were given dietary guidance and ONS, control group (n=59) received only dietary guidance. Anthropometric measurements, nutrition-related laboratory tests, and gastrointestinal function scores were also collected and analyzed using Student's t test and analysis of variance (ANOVA). In addition, the EQ-5D was used to evaluate patients' QoL.Compared with baseline measurements, the body weight of patients in the study group increased by 1.35±0.53 kg and 1.35±0.73 kg at 60 and 90 days, which were significantly higher than those in the control group (-1.01±0.54 kg, and -1.60±0.81 kg at 60 and 90 days). The results from ANOVA showed that only weight and BMI differed significantly between the study and control groups and also between different measurement times (p0.01). No differences were found for the other indicators or QoL between the study groups.ONS may improve the weight and BMI of surgically treated gastrointestinal cancer patients postdischarge. However, these effects had little impact on patients' QoL.

The interaction between theophylline and ethylenediamine, choline hydroxide and other alkaline compounds was investigated via UV–Vis spectroscopic method. Upon introduction of alkaline compounds, the π-π transition band of theophylline undergoes a red shift. This phenomenon is a result of removing a proton from the 7-position of a theophylline molecule. Moreover, cross peaks appear in 2D asynchronous spectra generated via the DAOSD approach on theophyllinate and various cation systems. These results suggest that cation-π interaction and cation-anion interactions occur between theophyllinate and various cations including ethylenediamine, choline, tetramethyl ammonium, K+ and Cs+. The interaction between anionic theophyllinate and various cation may play a considerable role in the transmembrane transport of theophylline in medicinal process.

UV activated sodium persulfate was employed to remove triclosan (TCS) in aqueous solution. The effects of several factors such as UV wavelength,UV

OBJECTIVE: To investigate the effect of sericin on the proliferation of human gastric cancer MKN45 cells and explore the underlying molecular mechanism. METHODS: MKN45 cells were transfected by LC3 double fluorescent autophagic virus, and the positive cells screened by puromycin were divided into blank group, sericin group and sericin+3-MA group. After incubation with sericin for 48 h, the cells were examined for proliferation, apoptosis and cell cycle using CCK-8 assay and flow cytometry. Cell autophagy was detected by transmission electron microscopy (TEM) and fluorescent inverted microscope, and the autophagy-related markers including LC3, p62 and Beclin proteins were detected with Western blotting. Nude mice bearing gastric cancer xenograft were treated with normal saline or sericin injections (n=5) and the changes in the tumor volume and weight were measured. RESULTS: Compared with the blank group, MKN45 cells with sericin treatment showed significantly inhibited proliferation both in vitro and in nude mice. Autophagosomes were observed in sericin-treated cells under TEM and fluorescent inverted microscope. Sericin treatment of the cells significantly increased the cell apoptosis (P < 0.01), caused obvious cell cycle arrest in G(2)/M phase (P < 0.01), up-regulated the expressions of both LC3-2 and Beclin, and down-regulated the expression of p62. The autophagy inhibitor 3-MA obviously antagonized the effects of sericin on cell apoptosis, cell cycle and autophagic protein expressions. CONCLUSION: Sericin can inhibit the proliferation of human gastric cancer MKN45 cells by regulating cell autophagy to serve as potential anti-tumor agent.

In this paper, we propose and present a novel algorithm for medical image segmentation (MIS). By analyzing the current state-of-the-art related algorithms, we introduce the multi-band active contour model based limit function to make the multilayer segmentation available. With the development of image segmentation technology, the development of medical image segmentation technology also got very big, because there is no find common, accepted effect ideal is suitable for medical image segmentation method, almost existing each kind of segmentation method has application in the field of medical image segmentation. Furtherly, with the optimized aims of being robust to the noise and avoiding the bad effluence on the result, we adopt the kernel method and new initialization curve. This model suffers from low noise robustness, and model algorithm is difficult to achieve. Integrated segmentation technology refers to two or more technology is used, combined with their own advantages, so they can on the accuracy or efficiency to achieve better performance than when using a single. A new penalty term is introduced to improve numerical stability and the step length is increased to improve efficiency. As far as the robustness and effectiveness are concerned, our method is better than the existing medical image segmentation algorithms. Experimental analysis verifies the success of our method.

Objective: To reveal the cutoff point and influencing factors in the dynamic change in phenotypic group in patients with stable angina pectoris (SAP) after Xinxuekang capsule treatment. Methods: Five hundred and seventy-six SAP patients were randomly assigned to receive Xinxuekang (XXK) capsules or Compound Danshen (CDS) tablets for 8 weeks. Global similarity degree analysis and nonlinear mixed effects modeling (NONMEM) were employed to reveal the cutoff points and influencing factors in dynamic changes in the SAP phenotypic group. The phenotypic group was defined as the six phenotypes in SAP, including angina, choking sensation in the chest, palpitations, dark purple lips, ecchymosis on the tongue, and fine-choppy pulse, which were quantitatively evaluated on Days 0, 14, 28, 42, and 56. Results: Variation in the six individual phenotypes and distribution of the SAP phenotypic profile were similar between the two experimental groups, but cutoff points for changes in the SAP phenotypic group were 7.28 and 10.73 weeks in XXK and CDS groups, respectively. Degree of severity of SAP as well as study site significantly affected the tendency for change in the SAP Xueyu Zheng in both XXK and CDS treatment groups. Different Chinese patent drugs affected the tendency for change in phenotypic group in patients with SAP. XXK was superior to CDS in controlling a clinical phenotypic group. Conclusion: Based on global similarity degree analysis and NONMEM, the cutoff point and influencing factors in phenomic variation of SAP may be determined, to improve the development and modification of treatment regimens.

Nixie tubes are widely used in industry, but the design of the driving circuits is one of the biggest challenges. Aiming at the characteristics of the large-size nixie tube, this paper designs the hardware circuits for 5-inch nixie tube at first, including the driving power, the bit drive circuit and the segment drive circuit. Then, the design programs to drive CH452 chip were given. During the realization process of the circuits, the perennial problems and the corresponding solving methods were given at last. This paper provides guidance for the design of driving circuit for nixie tube.

We consider the scenario of cognitive relay networks, where the cognitive relay is equipped with multiple antennas and the cognitive destinations have only one antenna due to the size and cost limitations. Aiming to maximize the signal-to-interference noise ratio (SINR), we develop the optimal beam-forming scheme for the relay case. The proposed scheme is based on minimum mean square error (MMSE). The theoretical results are validated by simulations. Simulation results show that the proposed scheme has a considerable performance.

Vendor Managed Inventory (VMI), as an innovative inventory management, has been concerned by more and more scholars and corporations. When conducting VMI model, managers normally forecast demand,through exponential smoothing method, to compute order quantity or order release time. However, the exponential smoothing method is very dependent on the selection of smoothing coefficient. Moreover, with the development of technology and science, increasing categories and decreasing producing cycle of products, manager's lack of historical data, exponential smoothing method fails to forecast demand perfectly. This paper applies exponential smoothing method, which is based on the idea of dynamic programming,to forecast customer demand and determine order release time, so as to keep or approximately keep service level remain at targeted service level.

Fire warning is a matter of concern in laboratory, this paper presents the design of distributed sensors fire warning system. The core idea is that a number of the bottom sensor collection terminals that consists of temperature and smoking sensors are evenly distributed in the laboratory; when there is a fire to happen, the bottom sensor collection terminals will send an alarming signal by the way of wireless communication to the middle layer alarming signal collection terminal, which starts a GPRS module to capture the scene and send the image to the senior monitoring management center. The senior manager receives an alarming image information, analysis and process, start the appropriate fire alarm system. After a year of testing and running, the system achieves the originally designed aim, and is reliable and stable.

Because the extensive management of the tradational agriculture hinders the development of the agriculture,we advise the system based on the inteent of things,which design and implent the crop growing enviornment.This article describes the meaning and the functions of the system in details,which also describes the architecture ,hardware components and software design.The design of the system promotes the rapid development of the precision agriculture.

The paper introduces the design and realization of gateway node for the smart home system based on Internet of Things. With the development of smart home based on internet , the gateway node as an important part has become a hot issue in the present study. The paper describes the functions,analusis the hardwares constitutions and softwares design. At last,it points the main problems and the developing direction.

The increase in the number of private cars as well as non-standard parked behavior has brought great pressure to campus traffic. In order to control this non-standard parked behavior, orderly and reasonable guide and regulate owners to develop good parking habits, we design a vehicle parking violation notification system. A system is designed in the article to record illegal parking information of vehicles. A working principle of this system is that a wireless MMS image terminal captures image information of illegal vehicles, and real-time transmits the captured image information to the Data Center Computer in Security Department of the school through the GPRS network, so as to achieve illegal vehicle information is timely recorded and notified. Meanwhile, outside campus of illegal vehicles will be warned or limited its re-enter the campus. After a year of work and testing, the entire system is stable, and the image information transmission failure rate is very low. Illegal parking behavior on campus has been significantly curbed, and traffic order has been significantly improved.

The Yellow River Delta National Agricultural Science and Technology Park proposed the concept of "One Zone One Hundred Parks", namely the Yellow River Delta National Agricultural Science and Technology Park consists of a hundred geographically dispersed agricultural technology demonstration park. In order to effectively provide intellectual support for these geographically dispersed agricultural technology demonstration parks, this paper presents the design and the idea of remote crop image capture and expert systems. The core idea is to set up image collection terminals in a decentralized agricultural technology demonstration park. Crop samples are collected by the terminals, using GPRS network to transfer the captured image data to the Key Laboratory of Agricultural Bioengineering. Agricultural experts make an analysis to image samples, and propose treatment advice. And then, the experts feedback the advice to the various agricultural technology demonstration parks. After a year of testing, the entire system is reliable, excellent performance in real-time transmission of images. This system has played a very important role in the prevention and control of crop pests and crop growth guidance.

In order to grasp the whole growth process of breeding cotton and establish the growth records of breeding cotton, the article proposes the design of breeding cotton growth management system based on MMS. The main idea is that field image acquisition terminals capture a live image in breeding cotton plots at a specific time every day, and send the live image to the monitoring center through the GPRS networks, then breeding cotton experts write cotton growth log and propose the next management advice for cotton based on the returned live image. At the same time, all the information will be written to the database in the monitoring center. The application of the system is able to not only save manpower costs, by tracking and analyzing the whole growth process of breeding cotton, but also summarize the successful breeding experience and failures. At the same time, the application of the system promotes cotton breeding and cotton management more scientific. After the actual testing, the system works stable and reliable, and meets the design requirements.

This article presents the design ideas of patrol system based on real-time image acquisition in patrol points. In this system, the image acquisition terminals are mounted on many patrol points, which are set in a predetermined patrol line. When patrol officers arrived at a patrol point, the image acquisition terminal mounted on the patrol point will capture a live image via a GPRS MMS module ,and then the image acquisition terminal sends this image to the central control unit in a form of MMS. The central control unit receives the sent MMS message, and separate out the image information from the received message, and then saves it to a database. According to the actual test results of this patrol system, it can not only meet the design requirements, but also the whole system has a high stability and reliability.

Using logical criterion based on the characteristics of binary image, the normalized cross-correlation algorithm is improved. First, the binary of gray image is carried out. The target and the background are made a distinction between 0 and 1. Second, through the logic correlation matching, two images of the same location value equal to 1, otherwise 0. Finally, the correlation coefficient is calculated. The experimental results show that the improved normalized cross-correlation algorithm can speed up the matching, without affecting the accuracy of the matching.

Recently, a new model for cognitive radio networks appears, in which a cognitive user (CU) can relay the primary data stream to improve the performance of the primary user s communication. Traditionally, the transmitter of the cognitive users will send data to the receiver of the cognitive users and relay the data sent from the primary user (PU) in different time slots. However, Multiple Input Multiple Output (MIMO) provides a remarkable increase in the spectral efficiency, which can transmit multiple independent data streams in a time slot with MIMO antenna. Based on the MIMO technique, we propose a novel framework, in which the cognitive user near by the primary user is equipped with MIMO antenna. In this paper, we search for the maximum sum-rate of the cognitive user, limiting the interference to the primary users. Simulation results show that the proposed method can really improve the performance of the cognitive relay networks.

The hot-dip coatings containing pure Zn and Zn-4.5Al-0.05Mg-0.03~0.12Ce were prepared through congruent melting. The interface of the hot-dip coating was researched by the scanning electron microscope (SEM) after polished and etching, and the results showed that the alloying elements were uniformly dispersed in the coating. The anti-corrosion performance of the coatings was researched using the weight loss rate by the neutral salt spray testing. The reasons of the effects of the elements Al-Mg-Ce on the anti-corrosion performance promoting were researched through SEM and X-ray diffraction analysis (XRD). The results showed that the protective effect of the Zn-4.5Al-0.05Mg-0.09Ce coating for the steel was enhanced by the electrochemical action.

The hot-dip coatings containing Zn-Al-Mg-Ce were prepared through congruent melting. The anti-corrosion performance of the coatings was researched using the weight loss rate by the neutral salt spray testing. The reasons of the effects of the elements Al, Mg, Ce on the anti-corrosion performance promoting were researched through the analysis of Scanning Electron Microscope and the polarization curves. The results showed that Al, Mg, Ce embedded in the Zn matrix uniformly and the protective effect for the steel was enhanced by the electrochemical action.

The hot-dip galvanizing coating can promote the anti-corrosion performance of the bolts in outdoor steel structure engineering. But the anti-corrosion performance cannot match that of the steel due to the centrifugal process. In this paper, the anti-corrosion performance of four kinds of bolts obtained from different company was researched by the neutral salt spray test method. The results show that the anti-corrosion performance of the all four bolts was unsatisfactory. The reasons were studied through testing the thickness of the coating, coating uniformity, surface morphology and elemental composition. The results show that the causes are the lower thickness of the hot-dip coatings, too much defects on the surface of the coatings and the elemental composition impurity.

The zinc-rich coating prevents steel from corrosion by sacrificing electrochemical cathode anode protection, but the zinc content is the most important parameter. In this paper, the zinc-rich coatings made with the amino resin, acrylic resin, complex solvents, auxiliary agents and high purity zinc powder. The coatings were applied onto steel substrate and then placed in neutral salt spray for 3000 h in order to study the anti-corrosion performance. The results showed that the anti-corrosion performance was promoted with the zinc content increasing. When the zinc content was higher than 86 wt. %, the anti-corrosion performance can be reached 3000 h. The anticorrosion mechanisms were studied by polarization curves and scanning electron microscope (SEM).

In recent years, as the GAO KAO student numbers in China have been going down, and the size of the undergraduate school enrollment has been increasing. The enrollment of professional colleges are facing a lot of pressure and challenge. This article proposes and designs the Student Service System. Its main purpose is, by using MMS and SMS, for those students who have made the inquiries and inclined to apply for the school, to provide personalized guidance and service during the application process, and to increase the chance of being accepted by the school. The application of this system will increase the application rate and registration rate. And at the same time, it will improve the school's publicity and reputation. Therefore, it fulfills its purpose.

Lightweight aggregate concrete has lower density and lower elasticity modulus, so it has better earthquake resistance. But the low strength limited the application of lightweight concrete. Steel fiber can improve the strength of lightweight aggregate concrete. In this paper, the influences of different lengths of steel fiber on the slump, compressive strength, splitting tensile strength and antiflex cracking strength are investigated. The results show that adding steel fiber reduces the workability of the concrete mixture, but it improved the each strength of light weight concrete and different lengths have the different regularity of effects.

Portland cement, crushed stone, sand and superplasticizer were used to obtain a high strength concrete with a low water to binder ratio. Three steel fibers such as waste steel wire, corrugated steel fiber and arch steel fiber were added into the high strength concrete. The effects of the three fibers on the slump and the strengths such as compressive strength, tensile strength and bending strength were researched. The reduction of the slump and the increasing of the strength of the concrete with the arch steel fiber were the most significant due to the highest length-diameter ratio.

Portland cement, crushed stone, sand and superplasticizer were used to obtain a high strength concrete with a low water to binder ratio. A reticular polypropylene fiber and a single polypropylene fiber were used to improve the strength of the high strength concrete, but the effects of the two fibers on the slump and strengths were quite different. The reasons of the differences were the surface area and the modulus of elasticity of the fibers. The results show the reticular fiber was better to used in high strength concretes.

Portland cement, silica fume, superplasticizer and fly ash cemamsite were used to obtain a high strength lightweight aggregate concrete with lower water to binder ratio. An enhancement effect on the strength was gained by adding steel fiber. When the expansive agent added with the steel fiber a synergistic reinforcing effect on the compressive strength, tensile strength and bending strength was obtained because of more energy consumed to pull the fibers out under the different loads.

In this paper, an Ultra-wide-band (UWB) filter based on composite right/left handed transmission line (CRLH TL) is presented. The structure of the proposed band-pass filter is quite simple, of which the size is 0.5cm×1.5cm. Left-handed capacitor is obtained by couple of microstrip lines, and Left-handed inductance is obtained by the grounded stub. The simulated results indicate that the pass band of UWB filter is 3.4-11GHz, the insertion loss is less than 1 dB and the return loss is smaller than -12.5dB. The performance of UWB filter could meet the requirement of UWB communication systems.

We designed the H-shaped metamaterial which is used at terahertz frequencies, and it can suppress magnetic response and construct purely electrical resonance. The resonance behaviors and the impact of geometrical parameters of the H-shaped metamaterial were analyzed by using effective circuit model. The simulation results indicate that permittivity of H-shaped metamaterial is negative at terahertz frequencies. H-shaped metamaterial could be used widely in the design of terahertz devices due to its simple structure and easy manufacture.

To construct a MYH9 gene knockout model in MGC803 cell line using transcription activator-like effector nuclease (TALEN) and observe its effect on cell cycle and apoptosis.According to FastTALE(TM) TALEN Kit, we designed TALEN pairs and constructed the plasmids targeting to MYH9 gene. After detecting their activity in MGC803 cells by plasmid transfection, DNA sequencing, RT-PCR and western blot, we selected the monoclonal cells and studied the changes in the cell cycle and apoptosis.MYH9 gene could not be knocked out but knocked down in selected MGC803 monoclonal cells, which caused cell cycle arrested at G2/M phase (P0.05) and a significant increase in the cell number with early apoptosis (P0.01).We successfully generated a MYH9 knockdown model in MGC803 cell lines by TALEN, which could be in favor of MYH9 function study in gastric cancer.

Hot-dip coating can improve the longevity of the bolt connection pairs, but may be influence the pairs on the torque coefficient and tensile load. The torque coefficient and tensile loads of three specifications, two strength degrees and two surface states with and without hot-dip coating bolt connection pairs were tested. The results showed both the mean and standard deviation of torque coefficient of the bolt connection pairs were enhanced in case of the hot-dip zinc process, deals with the lubricant MoS2 they were both decreased and closed to the standard values. By contrast, the tensile loads were unaffected by the hot-dip process.

Four zinc-rich coatings were applied onto steel substrate and then placed in neutral salt spray for 4000 h in order to study the anti-corrosion performance of the coatings. The results showed that the samples with two kinds of the coatings were more seriously eroded than the others. The reasons could be that the zinc particles were dispersed inhomogeneous in the binder and the zinc content was very lower than 96 wt. % obtained through the analysis of Scanning Electron Microscope and Differential Scanning Calorimetry.

Samples covered two kinds of hot-dip coatings were purchased and placed in neutral salt spray to study the anti-corrosion performance. The results showed that one sample was eroded more seriously than the other. The reasons were analyzed through surface morphology and the reaction products of the hot-dip coatings by scanning electron microscope and element composition. The results showed that might be the fractures developed of the corroded sample during the productive process that made O2 and solution contact with the substrate.

The UV/ClO2 process for triclosan ( TCS) removal was studied. The influences of several factors such as the initial pH, dose of ClO2, initial concentration of TCS and humic acid( HA) on TCS degradation in the UV/ClO2 combined process were discussed. The results showed that the UV/ClO2 process could effectively remove TCS and had a synergistic effect. When the light intensity was 6.5 μW x Cm(-2), the dose of ClO2 was 0. 5 mg x L(-1) and the concentration of TCS was 300 μg x L(-1), when UV and ClO2 were applied alone, the TCS removal rates within 1 min were only 5.23% and 84.93% respectively. The removal rate reached up to 99.13% after 1 min degradation using the UV/ClO2 combined process. In test conditions ( pH 6-9), the removal rate increased from 99.4% to 99. 63% with the increase of pH. Increasing dose of CIO2 could promote TCS removal. When the dose of ClO2 was 0.5-1.5 mg x L(-1), the removal rate was increased from 98.1% to 99.89%. The initial concentration of TCS was negatively correlated with the removal rate. When the initial concentration increased from 100 - 500 μg x L(-1), the removal rate of TCS was decreased from 99.98% to 94.39%. Low concentration of humic acid was beneficial to the removal of TCS, and high concentration of it had the opposite effect. Degradation products of TCS were investigated by GC/MS. Degradation of TCS by the processes of UV, ClO2 and UV/ClO2 also indicated that the main degradation products of the TCS were 2, 4-dichlorophenol (2,4-DCP), 2,7-dichlorodibenzo-p-dioxin (2,7-DCDD), etc.

Somatostatin (SS) is a hormone that inhibits the secretion of growth hormone. Immunization against SS can promote the growth of animals. This paper described the effects of DNA immunization on the growth and antibody response in mice and pigs immunized with a plasmid DNA encoding SS fused with GP5 of porcine reproductive and respiratory syndrome virus (PRRSV). A fragment of 180 bp encoding partial SS gene was amplified by PCR from the genomic DNA of peripheral blood mononuclear cells of pigs, and cloned as a fusion gene with PRRSV GP5 in plasmid pISGRTK3. Three times of immunization with the resulting plasmid pISG-SS/GP5 induced anti-GP5 antibodies in BALB/c mice and pigs, as demonstrated by GP5-specific ELISA and immunoblotting. Compared with pigs immunized with empty vector pISGRTK3, the growth performance of pigs immunized with pISG-SS/GP5 was increased by 11.1% on the 13th week after the last vaccination. The results indicated the plasmid DNA encoding SS and PRRSV GP5 fusion gene elicited anti-GP5 antibodies and improved the growth performance of immunized pigs.

Portland cement, silica fume and superplasticizer were used to obtain high strength mortar with lower water to binder ratios and suitable binder to sand ratios. The splitting tensile strength and the rupture strength of the high strength mortar were improved further by a type of arc-shaped steel fiber when the content of steel fiber was 3-6.5 vol. %. The results indicated that the tenacity of the high strength mortar improved significantly by the steel fiber.