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“媒介即讯息”时代手机拜物教的表象与内质

鄂州大学学报 2024年第4期31卷 59-62页

作者：吴庆华吴姗珊贺州学院学报编辑部广西贺州542899 中国社会科学院大学北京102401

以互联网的全球化普及为重要标志的信息革命正前所未有地改变着人类的生产和生活方式,“媒介即讯息”时代“手机拜物教”应运而生。一方面,智能手机成为日常生活不可或缺的重要器物,另一方面,手机新媒体信息传输随时、随地、随身的优势... 详细信息

以互联网的全球化普及为重要标志的信息革命正前所未有地改变着人类的生产和生活方式,“媒介即讯息”时代“手机拜物教”应运而生。一方面,智能手机成为日常生活不可或缺的重要器物,另一方面,手机新媒体信息传输随时、随地、随身的优势,使得手机侵占个人时间,宰制人类社会交往,拥有何种品牌与价位的手机也往往成为个人生活际遇的标志,甚至成为个体生存意义和价值的体现。手机拜物教的本质是信息依赖,手机融入“信息资本主义”的发展历程,成为以信息为重要生产要素的资本主义生产方式发展的新载体,成为资本主义生产关系的缩影。手机拜物教折射了超额垄断利润追逐之下信息生产、分配、消费的新样态。

关键词：手机拜物教信息崇拜信息资本主义

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环泊酚应用于颅内动脉瘤栓塞术的效果

中国新药与临床杂志 2024年第8期43卷 607-611页

作者：梅凤美曾琼陆军阮义峰吴姗姗南京医科大学附属脑科医院麻醉科江苏南京210029

目的观察环泊酚在颅内动脉瘤栓塞术中的麻醉效果。方法选择择期行颅内动脉瘤栓塞术的患者120例,ASA分级Ⅰ~Ⅱ级,随机分为对照组和试验组,每组60例。麻醉诱导时采用咪达唑仑0.04 mg·kg^(-1)、舒芬太尼0.25μg·kg^(-1)、环泊酚0.4 mg·k... 详细信息

目的观察环泊酚在颅内动脉瘤栓塞术中的麻醉效果。方法选择择期行颅内动脉瘤栓塞术的患者120例,ASA分级Ⅰ~Ⅱ级,随机分为对照组和试验组,每组60例。麻醉诱导时采用咪达唑仑0.04 mg·kg^(-1)、舒芬太尼0.25μg·kg^(-1)、环泊酚0.4 mg·kg^(-1)(试验组)或丙泊酚2.0 mg·kg^(-1)(对照组)及罗库溴铵0.6 mg·kg^(-1)。麻醉维持2组均持续泵注瑞芬太尼1μg·kg^(-1)·h^(-1)、顺阿曲库铵0.1 mg·kg^(-1)·h^(-1),试验组加用环泊酚0.8 mg·kg^(-1)·h^(-1),对照组加用丙泊酚5 mg·kg^(-1)·h^(-1)。术中调整泵注速度使脑电双频指数(BIS)维持在40~60,观察生命体征和BIS的变化,记录麻醉诱导时间﹑苏醒时间﹑拔管后Ramsay镇静评分等,观察不良反应发生情况。结果2组麻醉前、麻醉诱导后、气管插管后、手术结束时、气管导管拔除后各观察时点收缩压(SBP)﹑舒张压(DBP)和心率(HR)比较,均无显著差异(P>0.05),试验组手术结束时的BIS显著低于对照组(P<0.05)。麻醉诱导期间对照组SBP﹑DBP和HR的波动值显著大于试验组(P<0.05)。试验组苏醒时间长于对照组,镇静药物总用量少于对照组,均有显著差异(P<0.05)。试验组麻醉诱导后低血压﹑插管后高血压以及注射痛的发生率显著低于对照组(P<0.05)。结论环泊酚应用于颅内动脉瘤栓塞术具有良好的镇静效果,患者术中血流动力学波动更趋平稳,术后不良反应发生率低。

关键词：环泊酚丙泊酚颅内动脉瘤栓塞治疗性

Improving the Quality of the Deteriorated Regions of Multicrystalline Silicon Ingots during General Solar Cell Processes

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Chinese Physics Letters 2011年第4期28卷 163-166页

作者： wu shan-shan WANG Lei YANG De-Ren State Key Laboratory of Silicon Materials and the Department of Materials Science and Engineering Zhejiang UniversityHangzhou 310027

The behavior of wafers and solar cells from the border of a multicrystalline silicon(mc-Si)ingot,which contain deteriorated regions,is *** is found that the diffusion length distribution of minority carriers in the cells is uniform,and high efficiency of the solar cells(about 16%)is *** is considered that the quality of the deteriorated regions could be improved to be similar to that of adjacent ***,it is indicated that during general solar cell fabrication,phosphorus gettering and hydrogen passivation could significantly improve the quality of deteriorated regions,while aluminum gettering by RTP could ***,it is suggested that the border of a me-Si ingot could be used to fabricate high efficiency solar cells,which will increase me-Si utilization effectively.

关键词： crystalline RTP Solar

Risk Factors of Low Back Pain among the Chinese Occupational Population:A Case-control Study

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Biomedical and Environmental Sciences 2012年第4期25卷 421-429页

作者： LI Jing Yun WANG Sheng HE Li Hua wu shan shan YANG Lei YU shan Fa LI Li Ping WANG Jian Xin HUANG Yan Di Department of Occupational and Environmental Health School of Public Health Peking University Beo'ing 100191 China School of Public Health Tongji Medical Collage Huazhong University of Science and Technology Wuhan 430030 Hubei China Administration Department Henan Provincial Institute of Occupational Health Zhengzhou 450052 Henan China Injury Prevention Research Center Medical College of Shantou University Shantou 515041 Guangdong China Beijing Centers for Disease Control and Prevention Beo'ing 100020 China Beijing Municipal Institute of Labor Protection Beijing 100054 China

Objective To explore the risk factors of low back pain among the Chinese occupational population in several major industries. Methods A total of 7200 subjects （3600 cases and 3600 controls） were randomly sampled from a cross-sectional study, and they were investigated for individual and occupational factors of low back pain. The potential risk factors were first selected by using chi-square tests. Secondly, collinearity diagnosis proceeded by using the Kendall＇s rank correlation. Finally, binary logistic regression model was used for multi-factor analysis. Results Collinearity diagnosis showed that there was a severe collinearity problem among the potential risk factors of low back pain. Logistic regression model included 20 variables with statistical significance. Bending neck forward or holding neck in a forward posturefor long periods （0R=1.408） was the most important risk factor inducing low back pain in this study, followed by bending heavily with the trunk （0R=1.402）, carrying out identical work almost for the whole day （0R=1.340）. Additionally, suHicient normal break was a protective factor of low back pain. Conclusion Low back pain among the Chinese occupational population was associated with body height, occupation, work organization, physical work, working posture, and others. All these risk factors could be regarded as the indicators of low back pain, and some relevant preventive measures should be taken to reduce low back pain risk.

关键词： Case-control studies Low back pain Occupational health Risk factors

An Indexed Non-Equijoin Algorithm Based on Sliding Windows over Data Streams

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wuhan University Journal of Natural Sciences 2006年第1期11卷 294-298页

作者： YU Ya-xin YANG Xing-hua YU Ge wu shan-shan School of Computer Science and Engineering Northeastern University Shenyang 110004 Liaoning China

Processing a join over unbounded input streams requires unbounded memory, since every tuple in one infinite stream must be compared with every tuple in the other. In fact, most join queries over unbounded input streams are restricted to finite memory due to sliding window constraints. So far, non-indexed and indexed stream equijoin algorithms based on sliding windows have been proposed in many literatures. However, none of them takes non-equijoin into consideration. In many eases, non-equijoin queries occur frequently. Hence, it is worth to discuss how to process non-equijoin queries effectively and efficiently. In this paper, we propose an indexed join algorithm for supporting non-equijoin queries. The experimental results show that our indexed non-equijoin techniques are more efficient than those without index.

关键词： non-equijoin data stream sliding window red-black indexing tree

基于不同玉米生态区主推品种探讨宜粒收关键种质构建方向

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玉米科学 2024年第3期32卷 20-25页

作者：付修义张华生赵久然陈传永陈琛吴珊珊张雪原张春原王元东北京市农林科学院玉米研究所北京100097

选育宜机械粒收玉米新品种是节约劳动成本、提高经济效益的重要途径。根据生产中不同生态区对宜机械粒收玉米品种改良需求,分析影响玉米机械粒收的主要特性指标,确立宜粒收玉米育种目标。本文基于不同生态区光热条件、主推品种、广泛应... 详细信息

选育宜机械粒收玉米新品种是节约劳动成本、提高经济效益的重要途径。根据生产中不同生态区对宜机械粒收玉米品种改良需求,分析影响玉米机械粒收的主要特性指标,确立宜粒收玉米育种目标。本文基于不同生态区光热条件、主推品种、广泛应用种质及杂种优势模式,探讨适宜不同玉米生态区的宜机械粒收关键种质的构建方向以及杂优模式利用与品种选育策略。同时对宜机械粒收种质特性改良与机收品种选育进行实践,为我国宜机械粒收玉米种源创新与新品种选育提供参考。

关键词：玉米宜机械粒收种质新品种选育

Effect of Land Use on Soil Erosion and Nutrients in Dianchi Lake Watershed, China

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Pedosphere 2015年第1期25卷 103-111页

作者： NIU Xiao-Yin WANG Yan-Hua YANG Hao ZHENG Jia-Wen ZOU Jun XU Mei-Na wu shan-shan XIE Biao College of Geography Sciences Nanjing Normal University College of Resource and Environmental Engineering Shandong University of Technology

Soil erosion and loss of soil nutrients have been a crucial environment threat in Southwest China. The land use and its impact on soil qualities continue to be highlighted. The present study was conducted to compare soil erosion under four land use types(i.e.,forestland, abandoned farmland, tillage, and grassland) and their effects on soil organic carbon(SOC), total nitrogen(TN) and total phosphorus(TP) in the Shuanglong catchment of the Dianchi Lake watershed, China. There were large variations in the erosion rate and the nutrient distributions across the four land use types. The erosion rates estimated by137 Cs averaged 2 133 t km-2year-1under tillage and abandoned farmland over the erosion rate of non-cultivated sites, and the grasslands showed a net deposition. For all sites, the nutrient contents basically decreased with the soil depth. Compared with tillage and abandoned farmland, grassland had the highest SOC and TN contents within 0–40 cm soil layer, followed by forestland. The significant correlations between137 Cs, SOC and TN were observed. The nutrient loss caused by erosion in tillage was the highest. These results suggested that grassland and forestland would be beneficial for SOC and TN sequestration over a long-term period because of their ability to reduce the loss of nutrients by soil erosion. Our study demonstrated that reduction of nutrient loss in the red soil area could be made through well-managed vegetation restoration measures.

关键词： 137Cs nutrient loss soil organic carbon total nitrogen total phosphorus vegetation restoration

Enhanced visible light absorption of Bi_(2)WO_(6)/SiO_(2) with abundant adsorbed oxygen for the degradation of organic pollutant

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Particuology 2024年第5期88卷 210-217页

作者： Yuanting wu Xiaoying Wang Wenlong Zhong shan Zhang School of Material Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China

Heterogeneous photocatalysts exhibit high catalytic efficiency in the degradation of pollutants,but their stability and repeatability is not very good and requires high structural *** by nanosizing the pure Bi_(2)WO_(6)(BWO)photocatalyst without constructing a heterojunction,there is a significant improvement in its performance,with an enhancement effect of about 2.3 times(99.43%).The high photocatalytic degradation efficiency of the material can be attributed to the enhanced light absorption effect brought by the three-dimensional inverse-opal structure SiO_(2)(IS)and the abundant surface adsorbed oxygen generated after the formation of Si–O–W *** addition,the introduction of IS greatly increases the surface area of nanostructured BWO,which accelerates the charge transfer process,while the adsorbed oxygen promotes the participation of·O^(2−) in the photocatalytic reaction,thereby accelerating the consumption of photo-generated electrons and ultimately improving the separation of charge ***,the matched photonic bandgap further improves the absorption and utilization of light of the *** this work,we constructs Si–O–W bonds to obtain inverse-opal SiO_(2)/Bi_(2)WO_(6) with uniformly growth of pure phase nano BWO,which provides a feasible strategy for the preparation of high-performance pure-phase photocatalysts.

关键词： Bi_(2)WO_(6) SiO_(2) inverse-opal structure Photocatalysis Adsorbed oxygen

Recent research progress in the mechanism and suppression of fusion welding-induced liquation cracking of nickel based superalloys

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 1072-1088页

作者： Zongli Yi Jiguo shan Yue Zhao Zhenlin Zhang Aiping wu Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China College of Engineering China Agricultural UniversityBeijing 100091China State Key Laboratory of Clean and Efficient Turbomachinery Power Equipment Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationBeijing 100084China School of Material Science and Engineering Southwest Jiaotong UniversityChengdu 610031China

Nickel-based superalloys are extensively used in the crucial hot-section components of industrial gas turbines,aeronautics,and astronautics because of their excellent mechanical properties and corrosion resistance at high *** welding serves as an effective means for joining and repairing these alloys;however,fusion welding-induced liquation cracking has been a challenging *** paper comprehensively reviewed recent liquation cracking,discussing the formation mechanisms,cracking criteria,and *** recent investigations,regulating material composition,changing the preweld heat treatment of the base metal,optimizing the welding process parameters,and applying auxiliary control methods are effective strategies for mitigating *** promote the application of nickel-based superalloys,further research on the combination impact of multiple elements on cracking prevention and specific quantitative criteria for liquation cracking is necessary.

关键词： nickel-based superalloy fusion welding liquation cracking cracking mechanism cracking suppression