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Acoustic backscattering measurement from sandy seafloor at 6–24 kHz in the South Yellow Sea 预览
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作者 Guangming Kan Baohua Liu +4 位作者 Zhiguo Yang Shengqi Yu Lehua Qi Kaiben Yu Yanliang Pei 《海洋学报:英文版》 SCIE CAS CSCD 2019年第5期99-108,共10页
The acoustic bottom backscattering strength was measured at the frequency range of 6–24 kHz on a typical sandy bottom in the South Yellow Sea by using omnidirectional sources and omnidirectional receiving hydrophones... The acoustic bottom backscattering strength was measured at the frequency range of 6–24 kHz on a typical sandy bottom in the South Yellow Sea by using omnidirectional sources and omnidirectional receiving hydrophones.In the experiment,by avoiding disturbances due to scattering off the sea surface and satisfying the far-field condition,we obtained values of acoustic bottom backscattering strength ranging from–41.1 to–24.4 dB within a grazing angle range of 18°–80°.In the effective range of grazing angles,the acoustic scattering strength generally increases with an increase in the grazing angles,but trends of the variation were distinct in different ranges of frequency,which reflect different scattering mechanisms.The frequency dependence of bottom backscattering strength is generally characterized by a positive correlation in the entire frequency range of 6–24 kHz at the grazing angles of 20°,40°and 60°with the linear regression slopes of 0.222 9 dB/kHz,0.513 0 dB/kHz and 0.174 6 dB/kHz,respectively.At the largest grazing angle of 80°,the acoustic backscattering strength exhibits no evident frequency dependence. 展开更多
关键词 acoustic BACKSCATTERING strength SANDY bottom South Yellow Sea gazing angle DEPENDENCE frequency DEPENDENCE
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社会控制与供应链整合之间的相互作用关系探讨--以依赖和信息共享能力为中介 预览
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作者 冯华 魏娇娇 《珞珈管理评论》 2019年第3期175-192,共18页
本文利用359个样本数据,对社会控制这一供应链关系治理机制对供应链整合的作用路径进行了分析,并尝试以依赖和信息共享能力作为中介进行深入剖析。实证研究表明:(1)社会控制对内/外部整合存在完全中介作用,其中社会控制可以通过依赖间... 本文利用359个样本数据,对社会控制这一供应链关系治理机制对供应链整合的作用路径进行了分析,并尝试以依赖和信息共享能力作为中介进行深入剖析。实证研究表明:(1)社会控制对内/外部整合存在完全中介作用,其中社会控制可以通过依赖间接作用于内/外部整合,也可以通过依赖和信息共享的因果关系间接作用于内部整合;(2)社会控制只能通过信息共享/依赖或二者之间的因果关系与内部整合一起对外部整合产生正向促进作用;(3)核心企业内部以及其与合作伙伴之间应该致力于提升联合计划、共同解决问题的能力,通过构建信任机制而建立起相互依赖关系,搭建统一的信息技术平台,将供应链节点企业战略性地整合在一起,最终提升供应链整体的竞争能力。 展开更多
关键词 社会控制 内部整合 外部整合 依赖 信息共享
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上海市美沙酮维持治疗患者的酒精使用情况调查 预览
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作者 杜哲一 张蕾 +6 位作者 张佳婷 杜江 施大庆 宝家怡 吴倩影 张靓颖 董萍 《上海交通大学学报:医学版》 CAS CSCD 北大核心 2019年第2期193-197,共5页
目的·调查上海市美沙酮维持治疗患者的酒精使用情况及相关影响因素,为患者后续的酒精干预提供依据。方法·入选上海市837 名美沙酮维持治疗患者,采用一般情况调查表、酒精使用障碍筛查问卷、患者健康问卷抑郁量表、广泛性焦虑... 目的·调查上海市美沙酮维持治疗患者的酒精使用情况及相关影响因素,为患者后续的酒精干预提供依据。方法·入选上海市837 名美沙酮维持治疗患者,采用一般情况调查表、酒精使用障碍筛查问卷、患者健康问卷抑郁量表、广泛性焦虑量表、总体幸福感量表对患者进行调查并评估;根据近1 年内患者是否饮酒,将其划分为非饮酒组和饮酒组,并对2 组患者进行t 检验、χ2 检验及多因素Logistic 回归分析。结果· 837 名入选患者中,有30.9%的患者存在饮酒行为,其中13.8%的患者存在问题饮酒行为。影响患者饮酒行为的主要因素为性别(P=0.029)、首次吸毒年龄(P=0.005)、吸食海洛因前饮酒(P=0.000)、吸食海洛因时饮酒(P=0.000)。结论·上海市美沙酮维持治疗患者的饮酒情况较为普遍,该类患者缺乏对饮酒危害的认知。应对其采取有针对性的干预措施,以降低饮酒相关危害。 展开更多
关键词 美沙酮维持治疗 海洛因 依赖 有害饮酒
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图书馆数字资源长期保存及安全管理问题 预览
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作者 龚芳 《中国现代教育装备》 2019年第17期117-120,共4页
图书馆作为信息资料的储存中心,其主要目的是为大众提供有用的信息服务,由于数字资源对存储介质、元数据以及使用权标准性的依赖,数字资源的长期保存及安全管理面临了前所未有的严峻考验。如何使数字资源实现长期保存和安全管理,能够方... 图书馆作为信息资料的储存中心,其主要目的是为大众提供有用的信息服务,由于数字资源对存储介质、元数据以及使用权标准性的依赖,数字资源的长期保存及安全管理面临了前所未有的严峻考验。如何使数字资源实现长期保存和安全管理,能够方便地为大众服务,成为数字图书馆长期发展中的一项艰巨任务。 展开更多
关键词 数字资源 元数据 标准化 依赖
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Traditional Chinese Medicine-facilitated switch from methadone to buprenorphine-naloxone for treatment of heroin dependence:a case report
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作者 Huang Kuei-Yu Yu Kai-Chiang +3 位作者 Hsu Chung-Hua Yeh Yuh-Hsiang Han Kao-Ching Wei Han-Ting 《中医杂志:英文版》 SCIE CAS CSCD 2019年第2期281-284,共4页
The switch from methadone to buprenorphine-naloxone for individuals with heroin dependence is associated with several obstacles and challenges.Such patients may experience discomfort from discontinuing methadone, prec... The switch from methadone to buprenorphine-naloxone for individuals with heroin dependence is associated with several obstacles and challenges.Such patients may experience discomfort from discontinuing methadone, precipitated withdrawal symptoms induced by buprenorphine-naloxone,and poor psychosocial adjustments such as anticipatory anxiety regarding severe opioid withdrawal.We herein describe a 46-year-old man with a history of heroin dependence who underwent Traditional Chinese Medicine(TCM)-facilitated switching from methadone to buprenorphine-naloxone. No precipitated withdrawal was induced by buprenorphine-naloxone. The drug-switching process was successful and smooth. He maintained abstinence from heroin for the following year. In this case, we applied TCM for enhancement of methadone metabolism and detoxification, analgesic effects, and anxiolytic and hypnotic effects during the drug switch. We observed that TCM effectively facilitated the switch from methadone to buprenorphine-naloxone in our case. Further studies regarding TCM-facilitated treatment for heroin dependence should be conducted. 展开更多
关键词 HEROIN dependence OPIOID METHADONE BUPRENORPHINE Medicine Chinese traditional
重尾相依离散风险模型的大偏差 预览
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作者 孙歆 《贵州工程应用技术学院学报》 2019年第3期49-54,共6页
考虑一类保费随机的重尾相依离散风险模型。当索赔额的分布属于重尾分布时,得到了该模型的总索赔盈利过程的精确大偏差,从而推广了相关文献中的结论。
关键词 重尾分布 相依 大偏差
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Econometric modeling of risk measures: A selective review of the recent literature 预览
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作者 TIAN Ding-shi CAI Zong-wu FANG Ying 《高校应用数学学报:英文版(B辑)》 SCIE CSCD 2019年第2期205-228,共24页
Since the financial crisis in 2008, the risk measures which are the core of risk management, have received increasing attention among economists and practitioners. In this review, the concentration is on recent develo... Since the financial crisis in 2008, the risk measures which are the core of risk management, have received increasing attention among economists and practitioners. In this review, the concentration is on recent developments in the estimation of the most popular risk measures, namely, value at risk (VaR), expected shortfall (ES), and expectile. After introducing the concept of risk measures, the focus is on discussion and comparison of their econometric modeling. Then, parametric and nonparametric estimations of tail dependence are investigated. Finally, we conclude with insights into future research directions. 展开更多
关键词 Expectile EXPECTED Shortfall Network RISK NONPARAMETRIC Estimation TAIL DEPENDENCE Value at RISK
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The universal characteristic water content of aqueous solutions
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作者 黄晓 曹则贤 王强 《中国物理B:英文版》 SCIE EI CAS CSCD 2019年第6期16-19,共4页
Raman measurements at room temperature reveal a characteristic concentration for a series of aqueous solutions of electrolytes, through which O–H stretching vibration of H2 O or dilute HDO obviously changes their con... Raman measurements at room temperature reveal a characteristic concentration for a series of aqueous solutions of electrolytes, through which O–H stretching vibration of H2 O or dilute HDO obviously changes their concentration dependence. This characteristic concentration is very consistent with another, through which the solutions undergo an abrupt change in their glass-forming ability. Interestingly, the molar ratio of water to solute at these two consistent concentration points is almost solute-type independent and about twice the hydration number of solutes. We suggest that just when the concentration increases above this characteristic concentration, bulk-like free water disappears in aqueous solutions and all water molecules among closely-packed hydrated solutes exhibit the characteristics of confined water. 展开更多
关键词 AQUEOUS solutions STRETCHING vibration of WATER concentration DEPENDENCE HYDRATION number
吗啡的人体代谢及药物相互作用研究综述 预览
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作者 李倩倩 林忠泽 +2 位作者 张清民 盛钊君 李冬利 《山东化工》 CAS 2019年第9期109-111,共3页
吗啡是罂粟属植物中的一种主要生物碱,具有镇痛、麻醉、镇咳和止泻作用,临床应用范围广泛。近年来国家对含吗啡药物的监管越来越严格,本文从吗啡的人体药物代谢动力学、药物相互作用、毒性和依赖性方面综述了吗啡的研究进展,为吗啡的临... 吗啡是罂粟属植物中的一种主要生物碱,具有镇痛、麻醉、镇咳和止泻作用,临床应用范围广泛。近年来国家对含吗啡药物的监管越来越严格,本文从吗啡的人体药物代谢动力学、药物相互作用、毒性和依赖性方面综述了吗啡的研究进展,为吗啡的临床应用提供参考。 展开更多
关键词 吗啡 药物代谢动力学 药物相互作用 毒性 依赖性
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谈流行构式“无X不Y” 预览
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作者 蔺伟 《绍兴文理学院学报》 2019年第3期91-95,共5页
流行构式“无X不Y”主要强调X、Y之间的一种依存关系,构式变项X、Y均以双音节为主,且都具有指称性。构式的语义关系类型主要包括X是Y的必要条件、X是Y的重要部分、X是Y的核心特征三种,其语义可通过百科知识、认知经验和触发事件获得识解... 流行构式“无X不Y”主要强调X、Y之间的一种依存关系,构式变项X、Y均以双音节为主,且都具有指称性。构式的语义关系类型主要包括X是Y的必要条件、X是Y的重要部分、X是Y的核心特征三种,其语义可通过百科知识、认知经验和触发事件获得识解,构式的成型和固化受结构类推、框架压制、主观化等因素的共同影响。 展开更多
关键词 “无X不Y” 依存 指称 固化
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共因失效相关同级叶片系统可靠性分析
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作者 李洪伟 陈庆贵 +1 位作者 徐筱李 洪杰 《航空学报》 EI CAS CSCD 北大核心 2019年第7期104-113,共10页
为了准确地分析航空发动机的可靠性,针对航空发动机失效模式多、相关性复杂的特点,在考虑失效模式相关性的基础上,建立了共因失效相关的结构系统可靠性模型。采用蒙特卡罗法和近似数值分析法对航空发动机同级叶片系统在叶片静强度不足... 为了准确地分析航空发动机的可靠性,针对航空发动机失效模式多、相关性复杂的特点,在考虑失效模式相关性的基础上,建立了共因失效相关的结构系统可靠性模型。采用蒙特卡罗法和近似数值分析法对航空发动机同级叶片系统在叶片静强度不足失效、叶片外缘变形碰摩失效及考虑2种失效模式下的可靠度进行了计算分析。分析表明与共因失效相关的可靠性模型相比,传统的不考虑失效模式相关性的可靠性模型使可靠度评估过于保守。近似数值分析法在保持与蒙特卡罗法计算精度相同的情况下,能够大幅提高计算效率。 展开更多
关键词 共因失效 同级叶片 相关性 可靠性 近似数值分析
Model of output characteristics of giant magnetoresistance(GMR)multilayer sensor
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作者 张教凤 钱正洪 +2 位作者 朱华辰 白茹 朱建国 《中国物理B:英文版》 SCIE EI CAS CSCD 2019年第8期333-338,共6页
In this paper,the giant magnetoresistance(GMR)multilayer sensor is fabricated with a Wheatstone bridge,and it exhibits excellent performance with a sensitivity of 2.8349 mV/(V/Oe)(1 Oe=79.5775 A·m^-1)and a satura... In this paper,the giant magnetoresistance(GMR)multilayer sensor is fabricated with a Wheatstone bridge,and it exhibits excellent performance with a sensitivity of 2.8349 mV/(V/Oe)(1 Oe=79.5775 A·m^-1)and a saturation field of 26 Oe along the sensitive axis.The GMR sensor is also characterized in a high magnetic field.The sensitivity decreases from 2.8349 mV/(V/Oe)at an angle of 0°to 0.0175 mV/(V/Oe)at an angle of 90°.Then,the sensor is placed in a series of rotating magnetic fields.We propose a model to express the output characteristics of the GMR multilayer sensor.The transfer curves of the sensor can be shown as two exactly symmetrical circles with an increasing radius when the magnetic field increases.The experimental results are consistent with the simulation results of the model.The advantage of this model is that it is simpler and more intuitive. 展开更多
关键词 GIANT MAGNETORESISTANCE SENSOR phenomena and characterization ANGULAR dependence
社会科学成果转化影响因素解释结构模型分析 预览
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作者 岳洪江 董敏凯 《华东经济管理》 CSSCI 北大核心 2019年第2期176-184,共9页
社会科学成果转化是由多要素构成及相互影响的复杂系统。文章以社会科学成果转化系统影响因素为研究对象,运用解释结构模型对社会科学成果转化系统影响因素进行分析,从而确定影响因素之间的层次和影响关系;运用交叉影响矩阵相乘分析法,... 社会科学成果转化是由多要素构成及相互影响的复杂系统。文章以社会科学成果转化系统影响因素为研究对象,运用解释结构模型对社会科学成果转化系统影响因素进行分析,从而确定影响因素之间的层次和影响关系;运用交叉影响矩阵相乘分析法,进而识别系统中各因素的驱动力和依赖性。通过分析得出:社会科学成果转化系统影响因素分布于6个层次,社科成果转化法治化、社科成果转化政策系统性、社科成果转化收益特性、社科成果转化政策配套、社科成果转化的评估激励居于结构模型的第3、4、5、6层级,这些因素是影响社会科学成果转化系统的基础因素,是影响因素改进和管理的重点对象。 展开更多
关键词 社会科学成果转化 影响因素 解释结构模型 驱动力 依赖性
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Temperature dependence of CsI:Tl coupled to a PIN photodiode and a silicon photomultiplier 预览
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作者 Yu Sun Zhi-Yu Sun +13 位作者 Yu-Hong Yu Ruo-Fu Chen Shu-Weng Tang Fang Fang Duo Yan Qiang Hu Ke Yue Shi-Tao Wang Xue Heng Zhang Yong-Jie Zhang Jun-Lin Chen Ya-Zhou Sun Ze-Hui Cheng Bi-Tao Hu 《核技术:英文版》 SCIE CAS CSCD 2019年第2期81-89,共9页
With the aim of simulating the harsh temperature condition of space, a thallium-activated cesium iodide crystal (CsI:Tl) detector readout with a PIN photodiode (CsI:Tl(PD)) and with a silicon photomultiplier (CsI:Tl (... With the aim of simulating the harsh temperature condition of space, a thallium-activated cesium iodide crystal (CsI:Tl) detector readout with a PIN photodiode (CsI:Tl(PD)) and with a silicon photomultiplier (CsI:Tl (SiPM)) is investigated over a temperature range from —40 to 40℃. With the increase in temperature, the output signal increases by~24% with CsI:Tl(PD) and decreases by~69% with CsI:TI(SiPM). To reduce the effect of temperature in outer space, a method of bias voltage compensation is adopted for CsI:Tl(SiPM). Our study demonstrates that after correcting the temperature the variation in the analog-to-digital converter's amplitude is < 3%. 展开更多
关键词 CsI:Tl SIPM PD TEMPERATURE DEPENDENCE CORRECTION method
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建筑信息模型(BIM)与《绿色建筑评价标准》的相关性分析 预览
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作者 魏来 《建设科技》 2019年第16期20-25,共6页
建筑信息模型(BIM)是工程建设和信息技术两大领域高度结合的产物,是工程资产数字化的基本途径。BIM的特点和方法表明,使用BIM对工程进行分析和模拟将有利于绿色建筑方面的评价、管理和决策。这其中最关键的步骤就是根据现行的国家标准... 建筑信息模型(BIM)是工程建设和信息技术两大领域高度结合的产物,是工程资产数字化的基本途径。BIM的特点和方法表明,使用BIM对工程进行分析和模拟将有利于绿色建筑方面的评价、管理和决策。这其中最关键的步骤就是根据现行的国家标准《绿色建筑评价标准》,分析其与BIM的相关性,为BIM和绿色建筑评价的进一步结合提供指引。 展开更多
关键词 建筑信息模型 BIM 绿色建筑评价 相关性 证据 可测度性
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Abstinence Following a Motivation-Skill-Desensitization-Mental Energy Intervention for Heroin Dependence: A Three-year Follow-up Result of a Randomized Controlled Trial 预览
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作者 Jia-yan CHEN Jin-cong YU +5 位作者 Jie-pin CAO Yang XIAO Hong GU Rui-lin ZHONG Fang DING Zeng-zhen WANG 《当代医学科学(英文)》 SCIE CAS 2019年第3期472-482,共11页
The high rate of relapse among heroin users remains a significant public concern in China. In the present study, we utilized a Motivation-Skill-Desensitization-Mental Energy (MSDE) intervention and evaluated its effec... The high rate of relapse among heroin users remains a significant public concern in China. In the present study, we utilized a Motivation-Skill-Desensitization-Mental Energy (MSDE) intervention and evaluated its effects on abstinence and mental health. Eighty-nine male heroin users in a drug rehabilitation center were enrolled in the study. The participants in the MSDE intervention group (n=46) received MSDE intervention, which included motivational interviewing, coping skills training, eye movement desensitization and reprocessing, and mindfulness-based psychotherapy. The participants in the control group (h=43) received a series of lectures on skills training. A significant increase in Contemplation Ladder score (P<0.001) and decreases in scores on the Obsessive Compulsive Drug Use Scale (P<0.001), Beck Depression Inventory (P<0.001), and Aggression Questionnaire (P=O.O33) were found immediately after intervention. Compared to the control group, the MSDE intervention group reported significantly higher abstinence rates (P=0.027) and retention rates (P<0.001) at follow-up. Overall, the MSDE intervention, which uses a combined strategy for relapse prevention, could be a promising approach for preventing relapse among heroin users in China. 展开更多
关键词 HEROIN dependence RELAPSE prevention motivational interviewing cognitive therapy eye movement DESENSITIZATION and REPROCESSING
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Nicotine dependence in community-dwelling Chinese patients with schizophrenia 预览
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作者 Yan Li Cai-Lan Hou +7 位作者 Xin-Rong Ma Yu Zang Fu-Jun Jia Kelly Y C Lai Gabor S Ungvari Chee H Ng Mei-Ying Cai Yu-Tao Xiang 《综合精神医学(英文)》 CSCD 2019年第1期22-27,共6页
Background Smoking is a serious public health problem. Patients with schizophrenia usually have a higher prevalence of smoking than the general population, but the level of nicotine dependence is seldom studied, espec... Background Smoking is a serious public health problem. Patients with schizophrenia usually have a higher prevalence of smoking than the general population, but the level of nicotine dependence is seldom studied, especially for patients living in the communities. Aims This study aimed to examine the level of nicotine dependence in Chinese community-dwelling patients with schizophrenia and explored its associated sociodemographic and clinical factors. Methods A total of 621 patients with schizophrenia treated in the primary care centres of Guangzhou were consecutively recruited. The level of nicotine dependence was assessed with the Chinese version of the Fagerstrom Test for Nicotine Dependence (FTND). Results 148 patients with schizophrenia were current smokers, and the mean (SD) score of FTND was 5.06 (2.55) for all the current smokers. The prevalence of nicotine addiction was 48.0%(95% Cl: 40.0%-56.0%) in patients with current smoking. The patients with schizophrenia had a significantly higher level of nicotine dependence than the Chinese general population. Multiple linear regression analysis revealed that male gender, being unemployed, having a family history of psychiatric disorders, having major medical conditions, first illness episode and less severe positive symptoms were significantly associated with a higher level of nicotine dependence. Conclusion Community-dwelling patients with schizophrenia in China, especially male patients, had a higher level of nicotine dependence than the general population. 展开更多
关键词 NICOTINE DEPENDENCE COMMUNITY-DWELLING CHINESE PATIENTS SCHIZOPHRENIA
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Time-variant fragility analysis of the bridge system considering time-varying dependence among typical component seismic demands 预览
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作者 Song Shuai Qian Yongjiu +2 位作者 Liu Jing Xie Xiaorui Wu Gang 《地震工程与工程振动:英文版》 SCIE EI CSCD 2019年第2期363-377,共15页
This paper presents a copula technique to develop time-variant seismic fragility curves for corroded bridges at the system level and considers the realistic time-varying dependence among component seismic demands. Bas... This paper presents a copula technique to develop time-variant seismic fragility curves for corroded bridges at the system level and considers the realistic time-varying dependence among component seismic demands. Based on material deterioration mechanisms and incremental dynamic analysis, the time-evolving seismic demands of components were obtained in the form of marginal probability distributions. The time-varying dependences among bridge components were then captured with the best fitting copula function, which was selected from the commonly used copula classes by the empirical distribution based analysis method. The system time-variant fragility curves at different damage states were developed and the effects of time-varying dependences among components on the bridge system fragility were investigated. The results indicate the time-varying dependence among components significantly affects the time-variant fragility of the bridge system. The copula technique captures the nonlinear dependence among component seismic demands accurately and easily by separating the marginal distributions and the dependence among them. 展开更多
关键词 system FRAGILITY CHLORIDE corrosion TIME-VARYING DEPENDENCE copula function PROBABILISTIC seismic DEMAND
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Development and application of the multi-wavelength cavity ring-down aerosol extinction spectrometer
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作者 Junling Li Weigang Wang +3 位作者 Kun Li Wenyu Zhang Maofa Ge Chao Peng 《环境科学学报:英文版》 SCIE EI CAS CSCD 2019年第2期227-237,共11页
To better characterize the optical properties of atmospheric aerosols, the multi-wavelength cavity ring-down aerosol extinction spectrometer (MCRD-AES) is developed and applied in this study. By using tunable light so... To better characterize the optical properties of atmospheric aerosols, the multi-wavelength cavity ring-down aerosol extinction spectrometer (MCRD-AES) is developed and applied in this study. By using tunable light source and four parallel cavities, the MCRD-AES covers a wide and atmospherically relevant wavelength range from 360 to 663nm. Four wavelengths (375nm, 440nm, 532nm, and 620nm) are particularly tested with ammonium sulfate and nigrosine. The refractive index values obtained from this study agree well with literature data. The stability and accuracy of the MCRD-AES are tested, and the minimum detectable extinction coefficient is 0.5 1/Mm. The high sensitivity, high precision, and wavelength changeable of MCRD-AES indicate its great application prospect in comprehensively quantifying the optical properties of atmospheric aerosols. 展开更多
关键词 MCRD-AES Optical PROPERTY Refractive indices WAVELENGTH DEPENDENCE
Orientation dependence of elastic properties in orthorhombic Ca3Mn2O7
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作者 简刚 刘美瑞 +2 位作者 张晨 卢杰 晏超 《中国物理B:英文版》 SCIE EI CAS CSCD 2019年第2期369-375,共7页
Elastic properties are important in fundamental understanding of multiferroic materials. However, up to now, there is no work about anisotropy of elastic properties in orthorhombic Ca3Mn2O7. In this study, using coord... Elastic properties are important in fundamental understanding of multiferroic materials. However, up to now, there is no work about anisotropy of elastic properties in orthorhombic Ca3Mn2O7. In this study, using coordinate transformation method, we investigated basic elastic parameters(elastic constants c’ij) and engineering elastic parameters(Young’s modulus E, Poisson’s ratio v, and the rigidity modulus G’) of orthorhombic Ca3Mn2O7 along arbitrary orientations. The detailed anisotropic characteristics of these parameters were presented. The results reveal the orientation related elastic properties in mm2 point group orthorhombic Ca3Mn2O7. 展开更多
关键词 Ca3Mn2O7 ELASTIC properties COORDINATE TRANSFORMATIONS ORIENTATION DEPENDENCE
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