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采用低压烧结法制备了不同Y2O3添加量（质量分数）的WC−6Co非均匀硬质合金，并通过扫描电子显微镜、X射线衍射仪、能谱仪、金相显微镜、电子万能力学试验机、硬度计、矫顽磁力仪等设备研究了Y2O3质量分数对WC−6Co非均匀硬质合金微观结构、相成分及性能的影响。结果表明：Y2O3不会对合金相对密度和相组成产生影响；Y2O3与合金中杂质元素硫、氧等形成稳定的化合物，弥散分散于WC晶界，阻碍WC晶粒的融合长大，降低WC晶粒粒度，抑制WC晶粒非均匀结构的均匀化。随着Y2O3添加量的增加，合金的硬度逐渐增加，而抗弯强度呈现出先迅速上升后下降的趋势。Y2O3质量分数为0.048%对WC−6Co非均匀硬质合金性能提升最明显，硬度和抗弯强度分别达到1530 kgf·mm−2和2902 MPa。

Emergency shelter construction is one of the important measures to enhance the disaster prevention and mitigation capabilities of the entire society and effectively respond to emergencies. In order to explore the spatial distribution characteristics and influencing factors of emergency shelters in Hebei Province, data on the distribution of emergency shelters in Hebei Province were collected. Various methods such as coefficient of variation, imbalance index, spatial Gini coefficient, and global Moran's index were used to explore the spatial distribution characteristics of emergency shelters in Hebei Province. Methods such as geographic detectors were utilized to analyze the influencing factors of spatial distribution. The basic conclusion is that the spatial distribution of emergency shelters in Hebei Province shows a balanced distribution at the urban and geographical regional scales, presenting an overall clustering trend, and exhibiting characteristics of large dispersion and small clustering. The spatial distribution of emergency shelters is influenced by various factors such as topographical, demographic, economic, and urban development factors, among which topographical factors have the greatest impact. [ABSTRACT FROM AUTHOR]

The assessment of disaster indirect economic losses not only reflect the severity of disaster losses, but also contribute to the decision-making of disaster prevention and mitigation and post disaster recovery and reconstruction. Domestic and foreign scholars mainly distinguish direct loss and indirect loss by “flow stock”, and some scholars believe that it is more reasonable to use the concept of “high-order effect” to define indirect economic loss. The evaluation methods of indirect economic losses of disasters can be divided into three categories: statistics, economics and econometrics. Statistical evaluation methods include empirical coefficient method, GDP or GNP comparison method, and post event economic survey method. The economic evaluation method mainly includes the input-output model method and the computable general equilibrium model method. Economic evaluation methods have been widely used, while statistical and econometric evaluation methods are relatively few. The inclusion of the concept of “resilience”, the application of information fusion technology and social media data are the research trends of disaster indirect economic loss assessment. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Zhengzhou University (Natural Science Edition) is the property of Journal of Zhengzhou University (Natural Science Edition) 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 Journal of Frontiers of Computer Science & Technology is the property of Beijing Journal of Computer Engineering & Applications Journal Co Ltd. 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 Water Conservancy & Electric Power Technology & Application is the property of Omniscient Pte. Ltd. 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 Ordnance Industry Automation is the property of Editorial Board for Ordnance Industry Automation 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 Population Resources & Environment is the property of Shandong Normal University 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 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.)

Objective: To investigate the effect of phacoemulsification combined with different surgical methods on vision, hemodynamics and quality of life in patients with glaucoma and cataract. Methods: The clinical data of 56 patients (66 eyes) with glaucoma and cataract who were admitted to our hospital from January 2015 to August 2019 were analyzed retrospectively. According to the different operation methods, they were divided into two groups: group A(n=27, phacoemulsification combined with trabeculectomy) and group B (n=29, phacoemulsification combined with angle separation). The visual acuity, intraocular pressure, hemodynamics and quality of life of the two groups were compared. The complications of the two groups were counted. Results: The visual function index (VF-14) of the two groups increased in 1 month after operation, 3 months after operation and 6 months after operation, and group B was higher than group A (P<0.05). The visual acuity of the two groups increased first and then decreased at 1, 3 and 6 months after operation, and it was higher at 1, 3 and 6 months after operation than that before operation(P<0.05). The visual acuity of group B was higher at 3 and 6 months after operation than that of group a(P<0.05). The intraocular pressure of the two groups decreased continuously from 1 month to 6 months after operation, and group B was lower than that of group A (P<0.05). The end diastolic velocity (EDV) and peak systolic velocity (PSV) in group B were higher than that in group A (P<0.05), and the resistance index (RI) was lower in group B than that in group A (P<0.05). There was no significant difference in the incidence of complications between the two groups (P<0.05). Conclusion: Compared with phacoemulsification combined with trabeculectomy, phacoemulsification combined with angle separation is better in improving vision, intraocular pressure, hemodynamics and quality of life of patients with glaucoma combined with cataract, and does not increase the incidence of complications. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Natural Disasters is the property of Gai Kan Bian Wei Hui 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 观察神经节昔脂钠辅助治疗急性缺血性卒中的临床效果。方法 选取急性缺血性卒中患者 84 例, 根据随机数字表法将患者分为观察组、对照组各 42 例。两组入院后给予常规治疗，对照组静脉滴注丁苯猷氯 化钠注射液1 00mL /次，2 次Id。治疗组在对照组治疗基础上加神经节昔脂钠20mg/d,1次或分次肌注或缓慢静脉 滴注。两组均治疗2周。 治疗前后采用美匡匡立卫生研究院卒中噩表 (NHISS) 评分评估两组神经功能缺损程度，用 B arthel 指数评分 (BI 评分）评估两组日常生活活动能力，用酶联免疫吸附法检测血清Tau 蛋白，根据治疗后 NHISS评分下降幅度评价疗效，统计两组治疗期间发生的不良反应。 结果 治疗后两组 NIHSS 评分均较治疗前降 低，BI 评分及血清Tau蛋白水平均较治疗前升高，比较差异有统计学意义 (P 均<0.05)；治疗后观察组 NIHSS 评分 低于对照组，BI评分及庄清 Tau 蛋白水平高于对照组，比较差异有统计学意义(P均<0.05)。 治疗后对照组痊愈 10例、显效10例、有效14例、无效8例 ，总有效率为76.20% ；观察组痊愈15 例、显效 15例、有效 9 例、无效 3 例，总 有效率为 92.86%。观察组总有效率商于对照组 (P<0. 05)。治疗期间对照组发生嗜睡2例、恶心 3 例 、头垒 3例 ， 共 8 例；观察组发生嗜睡 2 例、恶心 3 例 、头辇1例 ，共 5 例 。两组不良反应发生率比较差异无统计学意义 (P 0.05)。结论 神经节昔脂钠可改善急性缺血性卒中患者神经功能、日常生活活动能力及脑组织损伤，疗效佳，且 安全性较高。 [ABSTRACT FROM AUTHOR]

Objective To investigate the application of Lipo-PEG1 injection in our hospital, analyze the rationality of its clinical application and evaluate the role of the administrative intervention in promoting the rational drug use in the hospital. Methods Based on the administrative guidelines announced on July 28, 2016, the data from 1 351 patients who received Lipo-PEG1 injection during July and August were collected and analyzed. Results Lipo-PEG1 injection is widely used in different departments at the hospital. 65.41% cases received this medication as off-label indications. 99.85% cases used this drug with impropriate dosage and indications. 0.39% cases had contraindications. There was no difference before and after the administrative intervention. Conclusion The off-label use of Lipo-PEG1 injection is very common in clinical practice. More clinical attention should be paid to this problem. The results from simple administrative intervention is unsatisfied. [ABSTRACT FROM AUTHOR]

Copyright of West China Journal of Stomatology is the property of Sichuan University, West China College of Stomatology 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 Chongqing University of Posts & Telecommunications (Natural Science Edition) is the property of Chongqing University of Posts & Telecommunications 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 Chongqing University of Posts & Telecommunications (Natural Science Edition) is the property of Chongqing University of Posts & Telecommunications 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.)