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Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Sciencepaper is the property of China Sciencepaper and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Veterinary Science / Zhongguo Shouyi Xuebao is the property of Chinese Society of Veterinary Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Harbin Institute of Technology. Social Sciences Edition / Haerbin Gongye Daxue Xuebao. Shehui Kexue Ban is the property of Harbin Institute of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Evaluation & Analysis of Drug-Use in Hospitals of China is the property of Evaluation & Analysis of Drug-Use in Hospitals of China Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the association between remnant cholesterol(RC)and triglyceride and glucose(TyG)index in young and middle-aged patients with ischemic stroke. Methods A total of 268 patients were divided into two groups, namely low TyG index group(n=134)and high TyG index group(n=134). Characteristics of the study population and metabolism risk factors(TC, TG, HDL-C, LDL-C, UA)were collected from biochemical test results. Spearman correlation analysis was used to analyze the correlation between metabolism risk factors and TyG index. Multivariate conditional logistic regression analyses were used to estimate odds ratios(ORs)and 95% confidence intervals(CIs)for RC and TyG index. Results Compared with the low TyG index group, significant differences were observed for BMI, history of diabetes, history of hypertension, SBP, DBP, FBG, TC, TG, LDL-C, RC, UA, and TyG index in high TyG index group. No significant differences were observed in age, gender, smoking status, or drinking status, HDL-C between the two groups. Spearman correlation analysis indicated that significant linear associations were observed between BMI, SBP, DBP, FBG, TC, TG, HDL-C, LDL-C, RC, UA and TyG index. Logistic regression analysis revealed that the RC, BMI, hypertension, diabetes, TC, LDL-C, and UA were significantly associated with the risk of increased level of TyG index. After adjusted analysis by RC, BMI, hypertension, diabetes, TC, LDL-C, and UA, only RC was significantly associated with an increased risk of increased level of TyG index. Conclusion Remnant cholesterol was associated with an increased risk of elevated TyG index level in young and middle-aged patients with ischemic stroke. [ABSTRACT FROM AUTHOR]

In recent years, with the vigorous development of aerospace industry at home and abroad, human exploration of space has gradually deepened. During space flight, however, astronauts exposed to microgravity experience bone loss of about 1-2% per month. The loss of bone can increase the risk of osteoporosis and fractures, threatening the physical health of astronauts and the viability of long-term space missions. Therefore, researchers used space experiments and ground simulated microgravity experiments to explore the pathogenesis and seek effective prevention and treatment measures. In this paper, the mechanism of bone loss induced by microgravity, countermeasures and common ground simulation experiment techniques are summarized. [ABSTRACT FROM AUTHOR]

The sooty tern optimization algorithm (STOA) is an emerging swarm intelligence optimization algorithm in recent years, which has attracted much research and attention because of its unique spiral optimization search method and the remarkable optimization effect in practical engineering problems. However, the STOA has the disadvantages of slower convergence, lower search accuracy, and easily fall into local optimum. Therefore, a multi-mechanism sooty tern optimization algorithm (GT-STOA), which combines chaotic mapping, adaptive inertia weight and gaussian mutation was proposed to promote population diversity and enhance the global search and local optimization capability of the algorithm. Meanwhile, to verify the significant optimization effect of the algorithm, nine typical and excellent meta-heuristic algorithms were selected for comparative validation on a total of 12 test functions with different features. The experimental results show that the GT-STOA has higher optimization accuracy and faster convergence speed than the other nine algorithms, and it is easy to jump out of the local optimum to find the global optimum solution. In addition, in order to study the ability of GT-STOA to solve practical problems, the optimization is conducted on the design of pressure vessel problem, and the experimental data obtained show that the GT-STOA improved the solving accuracy by 42. 54% compared with the traditional STOA algorithm. [ABSTRACT FROM AUTHOR]

Aiming at the feature that the condition evaluation of the circuit breaker (CB) is based on the operation information currently, while it does not involve CB's historical defects which reflect the reliability of CB's components, and the problem of the treatment and analy­sis of CBs' Chinese defect texts, a comprehensive evaluation model of the CBs' condition integrating the CBs' operation information and his­torical defect information was proposed, which adds the evaluation rules for historical defect texts to the existing evaluation guidelines, and also a classification method of the defect texts was proposed based on KNN algorithm. The steps of the method is firstly the Chinese text pre­-processing was done by doing word segmentation, word frequency statistics, deleting stop word and text vectorization, which were suitable for short texts, then the KNN algorithm was used to classify the defect texts. An example was used to verify the defect text classification method and the comprehensive evaluation model considering the information in historical defect texts. The results indicate that the classification meth­od is feasible and the rationality of the CB's evaluation results is improved. [ABSTRACT FROM AUTHOR]

Copyright of Rock & Mineral Analysis is the property of Editorial Board of Rock & Mineral Analysis and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To investigate the expression of osteopontin (OPN) splice variant mRNA, including the three isoforms OPN-A, OPN-B, and OPN-C, to explore its correlation with clinicopathologic features in gastric cancer, and to elucidate their role in tumor invasion and distant metastasis of gastric cancer. Methods The expression of OPN-A, OPN-B and OPN-C mRNA were detected by real-time reverse transcriptase-polymerase chain reaction in 66 gastric cancer tissues. The relationship between the expression of OPN-A, OPN-B and OPN-C mRNA and clinicopathologic features of gastric cancer was analyzed. Results The expression of OPN-C mRNA in the gastric cancer tissue was 3.21-fold higher than that in peritumoral mucosal tissue, showing a significant difference between them (P<0.001). OPN-C mRNA expression was correlated with the depth of tumor invasion, tumor diameter, lymph node meatastasis, distant meatastasis and had no correlation with differentiation grades. The low expression of OPN-C mRNA was correlated with long survival benefit (P=0.03). The expression of OPN-A and OPN-B mRNA had no significant relationship with clinicopathologic features of gastric cancer. Conclusions One of the isoform of osteopontin (OPN) OPN-C mRNA is overexpressed in gastric cancer. The overexpression of OPN-C mRNA may reflect the progression and is associated with the prognosis of gastric cancer. OPN-C mRNA may have value as a prognostic biomarker in gastric cancer. However, the expression of OPN-A and OPN-B are not correlated with the progression and metastasis of gastric cancer. [ABSTRACT FROM AUTHOR]

Copyright of Coal Science & Technology (0253-2336) is the property of Coal Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aiming at the cable force optimization problem of long-span cable-stayed bridge, a cable force optimization method based on hybrid strategy improved seagull optimization algorithm and support vector machine is proposed. The standard seagull optimization algorithm is improved by integrating refraction reverse learning, multi-directional spiral attack and nonlinear convergence strategies. The penalty factor and kernel function parameters of support vector machine (SVM) are optimized by improved seagull optimization algorithm (ISOA), and a prediction model of cable force combination structure response of long-span cable-stayed bridge is constructed. The cable force optimization model based on ISOA-SVM is designed and the cable force of stay cable under the control of girder alignment is optimized. The results show that the hybrid strategy significantly improves the convergence speed and convergence accuracy of seagull optimization algorithm. The SVM optimized by ISOA parameters has a good learning generalization ability for data samples. The average relative error of its test set is only 1. 08%, and the root mean square error is only 0. 012 2. The cable force combination based on ISOA-SVM optimization effectively improves the alignment and internal force of the main beam. The peak value reduction of the vertical deflection of the main beam is 36%, and the peak value reduction of the bending stress is 11. 94%, which verifies the effectiveness of the cable force optimization method. [ABSTRACT FROM AUTHOR]

Wood vinegar is the liquid obtained by condensation of flue gas generated during the pyrolysis of agricultural and forestry residues. Research on the preparation and application of wood vinegar can improve the utilization rate of agricultural and forestry residues and reduce environmental pollution. In this paper, the effects of pyrolysis temperature on the yield and components of wood vinegar, the effects of different raw materials and refining methods on the components of wood vinegar, the functional components, functions and application directions of wood vinegar prepared from different raw materials were comprehensively expounded by consulting a large number of literatures and materials and combining with the components determined by the authors of this paper. At the same time, the reasons for the difference in wood vinegar yield and composition were analyzed. The research progress of wood vinegar in improving soil physical and chemical indexes and biological activity, promoting crop growth, improving crop quality, controlling pests and diseases, and preparing biomass fertilizer was emphatically introduced from the aspects of different kinds, dilution concentrations, application methods, and combined application with other fertilizers. And aiming at the problems that the active ingredients are not clear in the current research process, the future research direction was presented. [ABSTRACT FROM AUTHOR]

Previous experimental studies show that geotextile reinforcement can effectively mitigate the liquefaction of saturated sand under earthquake. In view of the research on liquefaction resistance of saturated sand, the previous research methods were often limited to indoor dynamic triaxial tests and lacked the research on liquefaction resistance of geotextile reinforced sand ground. Firstly, the parameter calibration of different geotextile reinforced sand was carried out combined with the results of corresponding cyclic triaxial test of liquefaction resistance. On this basis, using OpenSees, an open-source finite element numerical simulation platform, numerical research on liquefaction resistance of saturated sand ground under different geotextile reinforcement cases was carried out. The results show that geotextile reinforcement can reduce the excess pore pressure and displacement of sand ground, and the liquefaction resistance of sand ground increases with the increase of geotextile layers. This technique of realizing numerical modeling of geotextile reinforced sand by parameter calibration method can provide some valuable reference for numerical simulation of similar reinforced soil stratum. [ABSTRACT FROM AUTHOR]

The advent of antibiotics played a vital role in dealing with the challenges of various bacterial infectious diseases, which has saved the millions of patients from the brink of death. However, the abuse of antibiotics accelerated the development of bacterial drug resistance, posing a great threat to human health. To conquer the increasingly severe drug-resistance, the peptide-based chitosan polymer (PBC) was synthesized by ring opening polymerization of Lysine N-carboxyanhydrides (Lys-NCA) and Leucine N-carboxyanhydrides (Leu-NCA) using chitosan macroinitiator, subsequently, which were modified by the in situ reduction of absorbed silver ions to obtain the peptide-based chitosan conjugated silver nanoparticle (PBC@AgNPs). Scanning electron microscopy (SEM) and Zeta potential showed that PBC@AgNPs were dispersed spherical nanoparticles with a size of about 250 nm and positive charge (+26.7 mV). The biological assays displayed that the PBC@AgNPs possessed broad-spectrum and excellent antibacterial effect against both Gram-positive and Gram-negative bacteria, with a MIC in the range of 8～16 μg/mL and more than 95% sterilization rate. Importantly, the cationic nanocomposites PBC@AgNPs did not cause the drug-resistance. The study of antibacterial mechanism revealed that the nanocomposites could destroy the bacterial cell membrane, and released AgNPs also played an antibacterial role, eventually, leading to the irreversible apoptosis of bacteria cells. [ABSTRACT FROM AUTHOR]