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To investigate the structural safety implications of cable rupture on the arch bridge system, based on an under-construction arch bridge in Shaanxi Province, finite element numerical simulations was adopted. Various scenarios of “ sudden cable rupture” during operation were subjected to dynamic response analysis and safety assessment. Results demonstrate that the combined effects of the pier-beam-arch structure significantly impact adjacent spans while minimally affecting others. Structural vibrations stabilize within 5 s post-rupture, with main beam responses exhibiting minor amplitudes compared to larger ones in the arch rib. The maximum dynamic amplification factor (DAF) for the arch rib reaches 10. 5, and the demand-capacity ratio ( DCR) of hangers substantially increases under dynamic loading. Hanger forces experience a several-fold increase shortly after cable rupture, with a maximum DCR of 40. 3%, indicating a significant reduction in structural safety reserves. The potential for consecutive hanger ruptures during cable vibration highlights the necessity for heightened safety vigilance during bridge operation. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Shanghai Jiao Tong University (1006-2467) is the property of Journal of Shanghai Jiao Tong University Editorial Office 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 Oil Crop Sciences is the property of Oil Crops Research Institute of Chinese Academy of Agricultural Sciences 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 Agricultural Science & Technology (1008-0864) is the property of Journal of Agricultural 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 Science Technology & Engineering is the property of Chinese Society of Technology Economics 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 Agro-Environment Science is the property of Journal of Agro-Environment Science 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.)

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Electronic Components & Materials is the property of Electronic Components & Materials 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 Agro-Environment Science is the property of Journal of Agro-Environment Science 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.)

Copyright of Natural Gas Geoscience is the property of Natural Gas Geoscience 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 clinical efficacy of L-carnitine in the treatment of elderly patients with chronic heart failure and its effects on vasoactive molecules and cardiac function. Methods: 120 elderly patients with chronic heart failure admitted in our hospital from June 2017 to June 2018 were randomly divided into the observation group and the control group. The control group received routine treatment, while the observation group was given L-carnitine on the basis of routine treatment. The clinical efficacy, angiotensin II (Ang II), aldosterone (ALD), nitric oxide (NO), endothelin-1 (ET-1), left ventricular ejection fraction (LVEF), left ventricular end systolic diameter (LVESD) and left ventricular end diastolic diameter (LVEDD) of the two groups were compared.Before treatment, the levels of SV, CO, CI, VE, VA and VE / VA in the two groups were similar, with no significant difference (P>0.05). Thetotal effective rate of the observation group was 91.67%, which was significantly higher than that of the control group (65%) (P<0.05). Results: Before treatment, there was no significant difference in LVEF, LVESD and LVEDD between the two groups (P>0.05). After treatment, the LVEF of the two groups was higher than before treatment, and the LVEF of the observation group was higher than that of the control group (P<0.05). After treatment, the LVESD and LVEDD of the two groups were lower than those before the treatment, and the LVESD and LVEDD in the observation group were lower than those of the control group, and the difference was statistically significant (P<0.05). Before treatment, there was no significant difference in the levels of Ang II, ALD, NO and ET-1 between the two groups (P>0.05). After treatment, the Ang II, ALD and ET-1 of the two groups were lower than those before the treatment, and the Ang II, ALD and ET-1 in the observation group were lower than those of the control group, and the difference was statistically significant (P<0.05). After treatment,the NO of the two groups was higher than before treatment, and the NO of the observation group was higher than that of the control group, with a statistically significant difference (P<0.05). No obvious adverse reactions were observed in the two groups during treatment. Conclusion: L-carnitine is effective in the treatment of elderly patients with chronic heart failure, and can effectively improve the level of vasoactive molecules and cardiac function, safe and reliable. [ABSTRACT FROM AUTHOR]

Copyright of Progress in Modern Biomedicine is the property of Publishing House of Progress in Modern Biomedicine 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 Mechanical & Electrical Engineering is the property of Mechanical & Electrical Engineering Magazine 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 Henan University of Technology Natural Science Edition is the property of Henan University of Technology Journal Editorial Department 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 Food Research & Development is the property of Food Research & Development Editorial Department 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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 Natural Gas Geoscience is the property of Natural Gas Geoscience 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.)

In recent years, the problem of urban waterlogging has become more and more serious as the environment has changed through both climate change and urbanization. The fundamental assumption of stationarity in municipal engineering may be invalid because changing environments have changed the frequency and intensity of extreme rainfall in urban areas. For this reason, analysis of the impacts of changing environments on extreme urban rainfall and drainage infrastructure is important to urban water resources management, municipal engineering design, and disaster prevention and mitigation. The present study summarizes the advances in future projection of short-duration (sub-daily) rainfall and design criteria for urban drainage system and also reviews both the evolution of laws concerning urban short-duration rainfall and current research into studies of the impacts of changing environments on drainage infrastructure. We also explored the physical mechanism underlying the impact of changing environments on urban short-duration extreme rainfall. Besides, we summarize the methods for analyzing of impacts of changing environments on urban region and emphasized what type of future research is required:(1) strengthening physical mechanisms research focusing on impacts of climate change and urbanization on short-duration extreme rainfall; (2) improving the capability of climate models to describe the interactions between urban land surface and local climate, and strengthen the applications of kilometer-scale convection-permitting models in urban areas; (3) strengthening the study of design criteria for urban drainage infrastructure in changing environments; and (4) comprehensively evaluating the impacts of changes in extreme rainfall and urbanization on urban drainage infrastructure including pipes' surcharges, pollution and water security. [ABSTRACT FROM AUTHOR]

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Copyright of Journal of Vibration Engineering is the property of Nanjing University of Aeronautics & Astronautics 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.)

In order to improve serious pollution caused by heary meatal ions,spherical mesoporous TiO2/SiO2 composites were prepared by sol-gel method. SEM and BET surface area analysis was used to characterize the composites, and the effect of pH, temperature, contact time etc. was investigated. The result shows that the TiO2/SiO2 is effective in removing lead ion and the maximum adsorption capacity is 8mg/g when the optimal adsorption condition is pH 6, constant temperature 35℃, addition of the composite 0.025 g and contact time 25 min. [ABSTRACT FROM AUTHOR]

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Copyright of Shandong Medical Journal is the property of Shandong Medical Health Newspapers 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.)

目的观察人类动力素蛋白（kinectin)基因V4L异构体在肝癌组织中的表达，分析其与患者血清kinectin 抗体水平的关系。方法收集45例肝癌患者的癌组织、配对癌旁组织、血清标本和10例正常肝组织标本，采用 RT-PCR法检测组织中kinectin基因V41.异构体，计算包含V4选择拼接区的长kinectin异构体/不包含V4选择拼 接区的短kinectin异构体(V4VV4S);将MBP-kinectin融合蛋白作为抗原，采用ELISA法检测45例配对肝癌患者血 清kinectin抗体滴度;分析肝癌组织中kinectin基因V#异构体表达与血清kinectin抗体滴度的关系。结果肝癌 组织中kinectin基因V4L/V4S为2.709 ± 1.025、癌旁组织中为1.564 ±0.357、正常肝组织为1.507 ±0. 499，肝癌组 织V4VV4S高于癌旁组织和正常肝组织=29. 69S，尸=0.000);肝癌患者血清kinectin抗体滴度值为0. 170 7 ± 0.023 1,4肝癌组织kinectin基因V4L/V4S无明显相关性（r = -0.410,尸>0.05)。结论kinectin基因V4L异构 体在肝癌组织中有过度表达，可能在肝癌的发生中起重要作用，但与血清kinectin抗体的产生可能无关。 [ABSTRACT FROM AUTHOR]

目的探讨关节镜下不同程度清理术治疗膝关节骨性关节炎的临床效果。方法选取2014年1月至 2015年12月在该院行关节镜下有限和广泛清理术治疗的220例膝关节骨性关节炎患者作为研究对象，比较不同程度 清理术的临床效果。结果 I级膝关节受损患者有限清理术和广泛清理术远期临床效果比较，差异无统计学意义 (P>0.05); #级膝关节受损较重者采取广泛清理术远期临床效果不明显，与有限清理术效果比较，差异有统计学意义 (P<0.05);且"级膝关节受损者在有限清理膝关节损伤组织后能有效保护膝关节，与广泛清理术效果比较，差异均有统 计学意义(P<0.05)。结论关节镜下手术对膝关节骨性关节炎具有较好的临床效果，其中有限清理术对"和#级关节炎 效果较好，广泛清理术对I级关节炎具有较好效果。 [ABSTRACT FROM AUTHOR]