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侧面柱碰撞工况下Farside气囊对主驾WorldSID 50th假人损伤研究
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作者 杨春忠 殷凤轩 +2 位作者 李晓东 孙明宇 胡建博 《科学技术创新》 2024年第7期5-8,共4页
在2023版Euro NCAP侧面柱碰撞试验中主驾和副驾均放置WorldSID 50th假人,为了研究Farside气囊对该工况下主驾假人的保护效果,选取某款车型分别在两种工况下进行实车碰撞试验,对驾驶员假人头部加速度、颈部力、右侧肩部力、右侧股骨力、... 在2023版Euro NCAP侧面柱碰撞试验中主驾和副驾均放置WorldSID 50th假人,为了研究Farside气囊对该工况下主驾假人的保护效果,选取某款车型分别在两种工况下进行实车碰撞试验,对驾驶员假人头部加速度、颈部力、右侧肩部力、右侧股骨力、右侧骶髂力等进行对比分析。 展开更多
关键词 侧面柱碰撞 Farside气囊 WorldSID 50th假人
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Development of a Side Door Composite Impact Beam for the Automotive Industry
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作者 Vinay Papaiya Jens Schuster Yousuf Pasha Shaik 《Open Journal of Composite Materials》 2024年第1期1-14,共14页
The automobile industry has been searching for vehicles that use less energy and emit fewer pollutants, which has resulted in a high demand for fuel-efficient vehicles. Because of their higher strength-to-weight ratio... The automobile industry has been searching for vehicles that use less energy and emit fewer pollutants, which has resulted in a high demand for fuel-efficient vehicles. Because of their higher strength-to-weight ratio compared to traditional steel, using fiber-reinforcement composite materials in automobile bodies has emerged as the most effective strategy for improving fuel efficiency while maintaining safety standards. This research paper examined the utilization of fiber-reinforced composite materials in car bodies to meet the increasing consumer demand for fuel-efficient and eco-friendly vehicles. It particularly focused on a carbon-aramid fiber-reinforced composite impact beam for passenger car side door impact protection. Despite the encouraging prospects of the carbon-aramid fiber-reinforced beam, the research uncovered substantial defects in the fabrication process, resulting in diminished load-bearing capacity and energy absorption. As a result, the beam was un-successful in three-point bending tests. This was accomplished by using an I cross-section design with varying thickness because of the higher area moment of inertia. Vacuum-assisted resin transfer molding (VARTM) manufacturing process was used and the finished beam underwent to three-point bending tests. 展开更多
关键词 side-Door Impact Beam Impact Energy Absorption Carbon-Aramid Reinforcement VARTM
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Side-Channel Attacks & Data Exfiltration Using Wall Outlet USB Power Adapters
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作者 Andrew Masters Vijay K. Madisetti 《Journal of Information Security》 2024年第4期433-447,共15页
The number and creativity of side channel attacks have increased dramatically in recent years. Of particular interest are attacks leveraging power line communication to 1) gather information on power consumption from ... The number and creativity of side channel attacks have increased dramatically in recent years. Of particular interest are attacks leveraging power line communication to 1) gather information on power consumption from the victim and 2) exfiltrate data from compromised machines. Attack strategies of this nature on the greater power grid and building infrastructure levels have been shown to be a serious threat. This project further explores this concept of a novel attack vector by creating a new type of penetration testing tool: an USB power adapter capable of remote monitoring of device power consumption and communicating through powerline communications. 展开更多
关键词 CYBERSECURITY side Channel Attack Power Line Communication Penetration Testing Hotplug Attack Tool
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Gynecological Side Effects of Tamoxifen among Sudanese Women, Khartoum, Sudan, 2020
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作者 Mawahib Ahmed Elawad Abu Elgasim Yousra Abdelmoniem Suleiman +3 位作者 Lobaina Abozaid Dlal Alser Hassan Mohmmed Soha Saad Aldin Mohamad Suliman Duaa Hamd Abdulatif Farh 《Advances in Breast Cancer Research》 2023年第4期152-162,共11页
Background: In Sudan, the common endocrine therapy tamoxifen is prescribed to HR-positive patients, which is associated with a variety of complications such as hot flashes, vaginal discharge, and vaginal dryness. Obje... Background: In Sudan, the common endocrine therapy tamoxifen is prescribed to HR-positive patients, which is associated with a variety of complications such as hot flashes, vaginal discharge, and vaginal dryness. Objective: This study aimed to determine the gynecological side effects of tamoxifen among Sudanese women who have been diagnosed with breast cancer in Khartoum, Sudan. Methods: A retrospective cross-sectional study was conducted at Alzara Hospital in Al Amal Toure Revere, Sudan. A convenience sample of individuals previously diagnosed with breast cancer attended refer clinic. From October 2020 to September 2021, all patients attending were checked for eligibility. Results: A total of 100 patients were enrolled in the study;60% of patients reported increased vaginal secretions after taking the drug, 28% reported normal vaginal secretions with no change, and 11% reported decreased secretions after taking the medication, while 22% developed vaginal bleeding, and 22% of the ultrasound results revealed endometrial masses among the study patients. Also, 54 percent of female patients experienced hot flashes after taking the medication, and 12% of women missed some doses of treatment. Conclusion: Tamoxifen results in several gynecological side effects in women with breast cancer. A high percentage of women in the study developed hot flashes, vaginal bleeding, and discharge, in addition to having ultrasound results showing endometrial masses among them. 展开更多
关键词 TAMOXIFEN Breast Cancer Gynecological side Effects Sudanese Women
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Analysis of Serum Antibody Level after COVID-19 Vaccine and Side Effects after Vaccine
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作者 Hiromi Nagashima Shinji Chiba +7 位作者 Shinnosuke Oura Itaru Fujimura Masachika Akiyama Yu Utsumi Hironori Sakai Wataru Hojo Takuya Iwabuchi Makoto Maemondo 《Advances in Infectious Diseases》 2023年第2期249-262,共14页
Background: COVID-19 has caused a large number of deaths, in the elderly. In this situation, vaccines have been considered the main strategy to combat COVID-19 and were developed worldwide in 2020. One problem with CO... Background: COVID-19 has caused a large number of deaths, in the elderly. In this situation, vaccines have been considered the main strategy to combat COVID-19 and were developed worldwide in 2020. One problem with COVID-19 vaccination is side effects after vaccination. In this report, we identify the relationship between side effects and elevation of antibodies as determined by monitoring several kinds of antibodies against COVID-19. Objective: We investigated whether the antibody level changed depending on side effects after COVID-19 vaccination. Methods: Healthy volunteers, who received two vaccinations between 10 March and 7 May 2021, were collected for this study. Information including age, gender, smoking history, medical history including allergies and side reactions after vaccination was obtained by questionnaire. Serum levels of antibodies of IgG and IgM against each S1, SP, and NP antigens of COVID-19 were evaluated frequently for 3 - 4 months after the first vaccination. Result: Ten employees working at Iwate Medical University were evaluated in this study. Side effects were observed in 7 of 10 patients, and grade 2 side effects in all 3 patients with a history of allergic disease. Serum S1 and SP IgG were elevated sufficiently in all patients. In all patients, IgG antibody titers fell below the cutoff point in approximately 3 months. No cases had elevated NP antibodies. SP IgM was elevated in three cases;all three cases with elevated IgM had allergic disease and the degree of side effects was relatively higher. Subjects with long-lasting elevated SPIgM were observed. Conclusion: S1 IgG and SP IgG exceeded the cutoff in all subjects after vaccination but decreased below the cutoff in all subjects within 4 months, regardless of side effects or allergic history. On the other hand, elevated SPIgM was suspected to be related to side effects and history of allergies, and cases with persistent elevation of SPIgM were observed. 展开更多
关键词 COVID-19 Vaccination History of Allergic Disease side Effect S1 IgG SP IgG SP IgM
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Supply-Side Structural Reform, Digital Economy and Corporate Default Risk
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作者 Xiaojie Jiang 《Open Journal of Applied Sciences》 2023年第7期987-1004,共18页
In recent years, a lot of corporate defaults have had an impact on the capital market. How to prevent corporate default risks has become an important topic of concern for the academic community, enterprises and the go... In recent years, a lot of corporate defaults have had an impact on the capital market. How to prevent corporate default risks has become an important topic of concern for the academic community, enterprises and the government. We took China’s A-share listed companies from 2012 to 2018 as a sample, and used the double difference method to analyze the impact of supply-side structural reforms on corporate default risks. We found that supply-side structural reforms have reduced the risk of corporate default, and the inhibitory effect has gradually increased. In the relationship between supply-side structural reforms and corporate default risks, corporate financing capabilities have played an intermediary role. Supply-side structural reforms can improve the company’s endogenous financing capabilities, thereby reducing the risk of corporate default. However, we also found that the mediating effect of a company’s exogenous financing capability is not significant. At the same time, the regression results show that the digital economy can play a regulatory role. It can not only actively regulate the relationship between supply-side structural reforms and corporate default risks, but also mediate the mediating effect of corporate endogenous financing capabilities. The results of this article provide some evidence for the synergy between supply-side structural reforms and the digital economy. 展开更多
关键词 Supply-side Structural Reform Default Risk Endogenous Financing Exogenous Financing Digital Economy
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Control mechanism and technique of floor heave with reinforcing solid coal side and floor corner in gob-side coal entry retaining 被引量:6
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作者 Chen Yong Bai Jianbiao +3 位作者 Yan Shuai Xu Ying Wang Xiangyu Ma Shuqi 《International Journal of Mining Science and Technology》 SCIE EI 2012年第6期832-836,共5页
Floor heave is the most common convergence in gob-side entry retaining.The paper analyzes the form,process and characteristics of gob-side entry retaining with the comprehensive methods of theoretical analysis,numeric... Floor heave is the most common convergence in gob-side entry retaining.The paper analyzes the form,process and characteristics of gob-side entry retaining with the comprehensive methods of theoretical analysis,numerical simulation and the field trial.Research results present that bending and folding floor heave is the main factor in the stage of the first panel mining;squeezing and fluidity floor heave plays a great role in the stable stage of gob-side entry retaining;the combination of the former two factors affects mainly the stage of the second mining ahead;abutment pressure is a fundamental contribution to the serious floor heave of gob-side entry retaining,and sides corners of solid coal body are key part in the case of floor heave controlling of gob-side entry retaining.Floor heave of gob-side entry retaining can be significantly controlled by reinforcing sides and corners of solid coal body,and influence rules on the floor heave of gob side entry retaining of sides supporting strength and the bottom bolt orientation in solid coal side are obtained.Research results have been successfully applied in gob-side entry retaining of G20-F23070 face haulage roadway in #2 coal mine of Pingmei Group,and the field observation shows that the proposed technique is an effective way in controlling the floor heave of gob-side entry retaining. 展开更多
关键词 Gob-side ENTRY retaining ABUTMENT pressure Forms of FLOOR heave Reinforcing sides of solid COAL side Bolt in a FLOOR CORNER
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Side-Tee混合器内微观混合行为研究 被引量:4
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作者 杨旷 初广文 +2 位作者 邹海魁 邵磊 陈建峰 《化学反应工程与工艺》 CAS CSCD 北大核心 2010年第3期198-203,共6页
选用碘化物-碘酸盐体系,利用化学探针法对Side-Tee混合器在较高雷诺数下微观混合效率进行了研究。考察了不同影响参数(如雷诺数、体积流率比、反应物浓度、粘度、管径)对Side-Tee混合器微观混合性能的影响,并用离集指数来表征其微... 选用碘化物-碘酸盐体系,利用化学探针法对Side-Tee混合器在较高雷诺数下微观混合效率进行了研究。考察了不同影响参数(如雷诺数、体积流率比、反应物浓度、粘度、管径)对Side-Tee混合器微观混合性能的影响,并用离集指数来表征其微观混合特性。结果表明,雷诺数大于12000后碘化物-碘酸盐反应体系对混合器内微观混合状况不敏感。基于团聚模型,估算出Side-Tee混合器在实验条件下的微观混合时间为3×10^-5~3×10^-4s。表明这一型式的反应器对于快速反应尤其是纳米材料制备过程具有替代传统搅拌槽反应器的优势。 展开更多
关键词 side-Tee混合器 微观混合 碘化物-碘酸盐反应体系 团聚模型
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ITER Side校正场线圈端部大圆弧模压成形及回弹分析 被引量:2
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作者 文伟 吴杰峰 +2 位作者 陈文革 夏世波 李波 《原子能科学技术》 EI CAS CSCD 北大核心 2010年第7期836-840,共5页
利用大型有限元分析软件ANSYS分析了国际热核实验反应堆(ITER)Side校正场线圈(CC)端部三维大圆弧模压成形及释放模具后导体的回弹效应,研究了不同半径成形时导体内外表面的应力、应变的分布及释放模具后导体的回弹规律。设计了1套模压... 利用大型有限元分析软件ANSYS分析了国际热核实验反应堆(ITER)Side校正场线圈(CC)端部三维大圆弧模压成形及释放模具后导体的回弹效应,研究了不同半径成形时导体内外表面的应力、应变的分布及释放模具后导体的回弹规律。设计了1套模压成形模具,通过修模的方式在该套成形模具上进行了不同半径成形试验,测得了不同成形半径时模压成形后的回弹量值。试验结果验证了所建立的有限元分析模型的正确性。有限元分析和试验结果表明:ITERSideCC端部三维大圆弧可通过模压成形达到所需的大半径要求,为ITER Side CC端部三维大圆弧成形提供了一种可行方案。 展开更多
关键词 ITER side校正场线圈 模压成形 回弹 有限元分析
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校园足球教学与训练方法--基于国外足球Small-Sided Games的解读 被引量:18
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作者 李虎 《广州体育学院学报》 北大核心 2020年第2期124-128,共5页
教学与训练方法的落后已经成为我国校园足球高质量发展和高效率普及的瓶颈。基于丰富我国足球教学与训练方法,提高校园足球普及质量与效率的现实需要,对国外足球小场训练赛(SSGs)的概念、特点、理论基础、训练效果影响因素及实践操作过... 教学与训练方法的落后已经成为我国校园足球高质量发展和高效率普及的瓶颈。基于丰富我国足球教学与训练方法,提高校园足球普及质量与效率的现实需要,对国外足球小场训练赛(SSGs)的概念、特点、理论基础、训练效果影响因素及实践操作过程等进行解读。以期增进广大中小学足球专项教师和教练对该方法的理解和掌握,同时,引导和提高他们对该方法的科学使用。 展开更多
关键词 校园足球 教学与训练 Small--sided Games(SSGs) 解读
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Surrounding rock control of gob-side entry driving with narrow coal pillar and roadway side sealing technology in Yangliu Coal Mine 被引量:7
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作者 Zha Wenhua Shi Hao +1 位作者 Liu San Kang Changhao 《International Journal of Mining Science and Technology》 SCIE EI CSCD 2017年第5期819-823,共5页
Gob-side entry driving can increase coal recovery ratio, and it is implied in many coal mines. Based on geological condition of 10416 working face tailentry in Yangliu Coal Mine, the surrounding rock deformation chara... Gob-side entry driving can increase coal recovery ratio, and it is implied in many coal mines. Based on geological condition of 10416 working face tailentry in Yangliu Coal Mine, the surrounding rock deformation characteristics of gob-side entry driving with narrow coal pillar is analysed, reasonable size of coal pillar and reasonable roadway excavation time after mining are achieved. Surrounding rock control technology and effective roadway side sealing technology are proposed and are taken into field practice. The results showed that a safer and more efficient mining of working face can be achieved. In addition, results of this paper also have important theoretical significance and valuable reference for surrounding rock control technology of gob-side entry driving with narrow coal pillar under special geological condition. 展开更多
关键词 Narrow coal PILLAR Gob-side ENTRY driving SURROUNDING rock control ROADWAY side sealing technology
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Right-and left-sided colorectal cancers respond differently to traditional Chinese medicine 被引量:5
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作者 Shan-Shan Liu Qi Shi +5 位作者 Hong-Jia Li Wei Yang Su-Su Han Shao-Qi Zong Wen Li Feng-Gang Hou 《World Journal of Gastroenterology》 SCIE CAS 2017年第42期7618-7625,共8页
AIM To explore the differences in the responses of left-sided colorectal cancer(LSCRC) and right-sided colon cancer(RSCC) to traditional Chinese medicine(TCM).METHODS Patients with postoperative stage I-III colorectal... AIM To explore the differences in the responses of left-sided colorectal cancer(LSCRC) and right-sided colon cancer(RSCC) to traditional Chinese medicine(TCM).METHODS Patients with postoperative stage I-III colorectal cancer(CRC) were enrolled and divided into the LSCRC with or without TCM and RSCC with or without TCM groups depending on the primary tumor side and TCM administration. Patients in the TCM group were given TCM for at least 6 mo. Our research adopted diseasefree survival(DFS) as the primary endpoint. We applied a Cox proportional hazards regression model for the multivariate factor analysis using Stata 12.0 and SPSS 22.0 software for data analysis.RESULTS Of the 817 patients included in our study, 617 had LSCRC(TCM group, n = 404; Non-TCM group, n = 213), and 200 had RSCC(TCM group, n = 132; NonTCM group, n = 68). The 6-year DFS for patients with LSCRC was 56.95% in the TCM group and 41.50% in the Non-TCM group(P = 0.000). For patients with RSCC, the 6-year DFS was 52.92% in the TCM group and 37.19% in the Non-TCM group(P = 0.003). Differences between LSCRC and RSCC were not statistically significant regardless of TCM ingestion.CONCLUSION Patients with either LSCRC or RSCC and who took TCM experienced longer DFS; furthermore, patients with RSCC benefited more from TCM in DFS. 展开更多
关键词 Colorectal cancer Left-sided Right-sided Traditional Chinese medicine Disease-free survival
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The reasons for end-to-side coaptation:how does lateral axon sprouting work? 被引量:3
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作者 Stefano Geuna Igor Papalia +4 位作者 Giulia Ronchi Francesco Stagno d'Alcontres Konstantinos Natsis Nikolaos A. Papadopulos Michele R. Colonna 《Neural Regeneration Research》 SCIE CAS CSCD 2017年第4期529-533,共5页
Nerve fibers are attracted by sutureless end-to-side nerve coaptation into the recipient nerve. Opening a window in the epineurium enhances axon attraction and myeliuation. The authors analyze the features of nerve re... Nerve fibers are attracted by sutureless end-to-side nerve coaptation into the recipient nerve. Opening a window in the epineurium enhances axon attraction and myeliuation. The authors analyze the features of nerve repair by end-to-side coaptation. They highlight the known mechanisms of axon sprouting and different hypotheses of start up signals (presence or absence of an epineurial window, role of Schwann cells, signaling from the distal trunk). The clinical literature is also presented and differences between experimental and clinical applications are pointed out. The authors propose their point of view and perspectives deriving from recent experimental and clinical experiences. 展开更多
关键词 peripheral nerve repair nerve coaptation end-to-side nerve repair side-to-side nerve repair epineurial window Schwann cells nerve regeneration nerve babysitter procedures nerve transfer nerve graft glues in nerve repair
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Meta-sided exchange环及其扩张 被引量:1
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作者 郭莉琴 何建伟 卲海琴 《四川理工学院学报(自然科学版)》 CAS 2010年第5期516-518,共3页
讨论了meta-sided exchange环的性质。证明了如果R是Abelian meta-sided exchange环,则对R的任意素理想P,都有R/P是局部环;如果R是Abelian环,(S,≤)是严格序幺半群且对任意s∈S,都有0≤s,则广义幂级数环[[RS,≤]]是meta-sided exchange... 讨论了meta-sided exchange环的性质。证明了如果R是Abelian meta-sided exchange环,则对R的任意素理想P,都有R/P是局部环;如果R是Abelian环,(S,≤)是严格序幺半群且对任意s∈S,都有0≤s,则广义幂级数环[[RS,≤]]是meta-sided exchange环当且仅当R是meta-si-ded exchange环。 展开更多
关键词 EXCHANGE环 meta-sidedexchange环 局部环 广义幂级数环
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立方体包装件混装集装离散优化(二)——UpSideUp箱型的集装 被引量:3
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作者 杨传民 杨涛 《天津商学院学报》 2000年第3期12-13,共2页
:提出了 Up Side Up箱型混装集装优化的一种方法 ,编制了软件 。
关键词 集装运输 集能力 UpsideUp箱型 混装 管理 数学
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Numerical simulation of dynamic thermal process during doublesided asymmetrical TIG backing welding of large thick plates 被引量:2
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作者 刘殿宝 赵慧慧 +2 位作者 李福泉 张广军 吴林 《China Welding》 EI CAS 2011年第1期44-48,共5页
The dynamic thermal process during double-sided asymmetrical TIG backing welding of large thick plates ( 1 000 mm×700 mm×50 mm) is numerically simulated using MSC. MARC. The effect of arc distance on the t... The dynamic thermal process during double-sided asymmetrical TIG backing welding of large thick plates ( 1 000 mm×700 mm×50 mm) is numerically simulated using MSC. MARC. The effect of arc distance on the thermal cycle in weld zone during double-sided asymmetrical T1G backing welding is investigated. The results show that the workpiece experiences double-peak thermal cycle in double-sided asymmetrical TIG backing welding. On the one hand, the fore arc has the pre- heating effect on the rear pass, and the pre-heating temperature depends on the distance between the double arcs, the heat input of fore arc, and the initial temperature of workpiece. On the other hand, the rear arc has the post-heating effect on the fore pass. The mutual effects of two heat sources decrease with the increase of arc distance. 展开更多
关键词 numerical simulation double-sided asymmetrical TIG backing welding thermal process double heat sources on double sides
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CORROSION BEHAVIORS OF THE EXPOSED SIDE AND UNDERSIDE OF LOW ALLOY WEATHERING STEEL IN QINGDAO AND WANNING FOR 18 MONTHS 被引量:1
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作者 S. T. Wang S. W. Yang K. W. Gao X.L. He 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2008年第6期425-436,共12页
For 18 months, a newly developed low alloy weathering steel has been exposed in two coastal sites (Qingdao in the north China, Wanning in the south China). The different corrosion behaviors of the exposed side and t... For 18 months, a newly developed low alloy weathering steel has been exposed in two coastal sites (Qingdao in the north China, Wanning in the south China). The different corrosion behaviors of the exposed side and the underside of the samples were characterized by X-ray diffraetion (XRD), polarization curve, electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and N2 adsorption approach. It was found that the samples exhibited higher corrosion rate in Wanning than that in Qingdao. The underside of the samples corrodes more seriously than the exposed side in Qingdao, whereas the result in Wanning is just the reverse. The protection performance of rust layers mainly depends on its compactness and the enrichment of Cu and Cr is a secondary causation. The different compactness of rust layers in the exposed side and the underside originates from different corrosion conditions of the two sides. 展开更多
关键词 Low alloy weathering steel Temperate marine environment Subtropical marine environment Exposed side Underside side
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UTILITY ANALYSIS AND EVALUATION METHOD STUDY OF SIDE CHANNEL INFORMATION 被引量:1
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作者 Yan Yingjian Yu Jingchao +1 位作者 Guo Pengfei Guo Jianfei 《Journal of Electronics(China)》 2013年第5期500-508,共9页
In order to improve the efficiency and success rate of the side channel attack,the utility of side channel information of the attack object must be analyzed and evaluated before the attack implementation.Based on the ... In order to improve the efficiency and success rate of the side channel attack,the utility of side channel information of the attack object must be analyzed and evaluated before the attack implementation.Based on the study of side-channel attack techniques,a method is proposed in this paper to analyze and evaluate the utility of side channel information and the evaluation indexes of comentropy,Signal-to-Noise Ratio(SNR)are introduced.On this basis,the side channel information(power and electromagnetic)of a side channel attack experiment board is analyzed and evaluated,and the Data Encryption Standard(DES)cipher algorithm is attacked with the differential power attack method and differential electromagnetic attack method.The attack results show the effectiveness of the analysis and evaluation method proposed in this paper. 展开更多
关键词 side-channel information Differential side-channel attack Comentropy Signal-to-Noise Ratio(SNR)
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Features of Runoff and Sediment Yield of Different Shrub-Grass Combination Modes for Highway Side Slope in Hilly Areas of Central Sichuan Province
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作者 李妮 陈其兵 谭昌明 《Journal of Landscape Research》 2012年第2期1-4,共4页
[Objective] Indigenous plants with favorable water and soil conservation effects were screened for the shrub planting.[Method] Suining-Ziyang-Meishan Highway in the hilly areas of central Sichuan Province was taken fo... [Objective] Indigenous plants with favorable water and soil conservation effects were screened for the shrub planting.[Method] Suining-Ziyang-Meishan Highway in the hilly areas of central Sichuan Province was taken for example,through sorting out plant species investigated in the route planning,3 indigenous shrub species(Neosinocalamus affinis,Vitex negundo and Coriaria nepalensis) and 3 indigenous herbaceous species(Setaria viridis,Miscanthus floridulus,Artemisia argyi) were selected.Rainfall simulation experiment was adopted to compare runoff and sediment yields of different combination modes and ratios under constant rainfall intensity(20 mm/min).[Result] Different combination modes under constant rainfall intensity all showed better water and soil conservation effects than that of control group did.For example,runoff appeared 1'-4'05"later,sediment yield reduced by 6.56-33.86 g respectively.Among all combination modes,runoff and sediment yield showed great difference after 20 min of constant rainfall,V.negundo+S.viridis had the lowest runoff(1,700 ml) and sediment yield(60.71 g);C nepalensis+A. argyi had the highest runoff(1,920 ml) and sediment yield(84.02 g).[Conclusion] Given the same planting conditions such as side slope and seeding quantity,and also the same planting techniques,in the hilly areas of central Sichuan Province,the combination of V.negundo and S.viridis can greatly improve the water and soil conservation capacity of highway. 展开更多
关键词 HIGHWAY side SLOPE Indigenous SHRUB Runoff YIELD Sediment YIELD Water and soil Conservation
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关于Meta-sided Exchange环的几点注记
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作者 郭莉琴 何建伟 卲海琴 《渭南师范学院学报》 2010年第5期6-7,共2页
给出了meta-sided exchange环的性质;讨论了Morita系统环的meta-sided exchange性质和具有零化条件的meta-sided exchange环;证明了满足一定条件的meta-sided exchange环是环.
关键词 EXCHANGE环 meta-sided EXCHANGE环 MORITA系统环
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