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基于深度学习的ANC模型研究进展及改进方法
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作者 韩羽 董新锋 +2 位作者 程荣 谭豪 荣洁斌 《通信技术》 2025年第8期906-913,共8页
对抗神经网络加密(Adversarial Neural Cryptography,ANC)模型是一种使用深度学习训练密码算法的框架,主要原理是利用生成对抗训练框架,设计神经网络作为加密双方及窃密敌手,通过模拟密码分析模型中的唯密文攻击或选择密文攻击训练加密... 对抗神经网络加密(Adversarial Neural Cryptography,ANC)模型是一种使用深度学习训练密码算法的框架,主要原理是利用生成对抗训练框架,设计神经网络作为加密双方及窃密敌手,通过模拟密码分析模型中的唯密文攻击或选择密文攻击训练加密方与敌手进行相互对抗博弈,使神经网络通过自我参数更新具备加密和解密的功能。首先梳理了当前ANC模型的研究进展,其次提出了对已有的ANC模型进行优化改进的方法。通过在对抗模型中增加敌手优势或提升神经网络自身的复杂性,从而提升ANC模型的安全性和生成密文的随机性,并给出了实例化的训练方法。 展开更多
关键词 anc模型 生成对抗网络 密码算法设计 随机性检测
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Influence of Prenatal Surveillance on Maternal and Perinatal Prognosis: A Prospective Study over 6 Months at the Maternity Ward of the Owendo University Hospital (Gabon)
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作者 Boniface Sima Ole Sidy Gérard Mba Edou +7 位作者 Ulysse Minkobam Désire Assoume Ophélie Makoyo Komba Nathalie Ambounda Pamphile Assoumou Jacques Albert Bang Ntamack Sosthène Mayi Tsonga Jean François Meye 《Open Journal of Obstetrics and Gynecology》 2024年第2期301-311,共11页
Introduction: The occurrence of pregnancy in women is a risky situation. Prenatal care is necessary, which is not often the case in our context. Aim: To analyze the influence of antenatal surveillance on maternal and ... Introduction: The occurrence of pregnancy in women is a risky situation. Prenatal care is necessary, which is not often the case in our context. Aim: To analyze the influence of antenatal surveillance on maternal and perinatal prognosis. Patients and Method: Preliminary longitudinal and analytical survey at the Owendo University Hospital (OHU) over 6 months. It focused on prenatal surveillance. The study population consisted of parturients who gave birth within 24 hours and we studied sociodemographic characteristics, variables related to antenatal contact, those of delivery as well as maternal and newborn outcomes. Results: 2485 deliveries were recorded and 1300 patients were retained according to the inclusion criteria. No prenatal contact (ANC0) was performed in 93 (7.15%), insufficient (ANCI) in 943 patients (72.5%), and sufficient (ANCS) in 264 patients (20.30%). Patients with low school level were significantly found when the NPC was not performed or insufficient and the same was true for the group of patients who were not employed and those who were single (p < 0.005). The caesarean section rate and perinatal mortality are high in this case. Conclusion: The quality of prenatal contact is insufficient in our context. The absence or inadequacy of the latter has a strong negative impact on maternal and perinatal morbidity and mortality. 展开更多
关键词 anc INSUFFICIENCY Maternal Pathologies Perinatal Death GABON
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Revolutionizing Noise Management: Active Noise Cancellation Headphones in Healthcare and Beyond
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作者 Dinesh Bhatia Felix V. Francis +2 位作者 Pankaj Panging Hitanshu Banrisuk Khyllait 《Journal of Biomedical Science and Engineering》 2024年第12期257-272,共16页
In the pursuit of improving patient comfort and auditory environments within healthcare, a novel Active Noise Cancellation (ANC) headphone has been conceptualized. This innovative device features a dynamic noise modul... In the pursuit of improving patient comfort and auditory environments within healthcare, a novel Active Noise Cancellation (ANC) headphone has been conceptualized. This innovative device features a dynamic noise modulation system that transitions between ANC and transparency modes, tailored to the acoustic needs of patient rooms, operating theatres, ICUs, and dental practices. It is designed for use in sleep laboratories to enhance rest and in audiometry rooms for precise auditory assessments. The portable and cost-effective design eliminates the need for traditional acoustic modifications. Post-ear surgery patients benefit from its calming auditory settings, while pediatric care is supported through its soothing properties. Its versatility extends to diagnostic imaging and recovery rooms, ensuring tranquil environments. Beyond healthcare, this ANC headphone has potential therapeutic applications, including vestibular rehabilitation, by supporting the recovery of the villi in semicircular canals. Its adaptability across environments such as libraries, mining, production industries, theatres, and urban noise landscapes highlights its broad utility. Although the ANC circuitry has been carefully designed, empirical validation is still pending. This manuscript explores the headphone’s diverse applications and its ability to transform noise management and auditory health across multiple domains. Tailored modes for specific scenarios, including traffic noise, emphasize its innovative potential as a key tool in auditory technology. 展开更多
关键词 Active Noise Cancellation (anc) Noise Healthcare HEADPHONES ICU
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层次分析法中和积法(ANC)排序结果的理论推导 被引量:10
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作者 何斌 陈灿 《云南师范大学学报(自然科学版)》 2002年第4期11-14,共4页
文章根据层次分析法原理和最优化思想 ,从理论上证明了和积法的正确性 。
关键词 anc 层次分析法 排序向量 和积法 简化最小二乘法 SLSM 最优化理论
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ANC系统的FU-LMS算法及其性能分析 被引量:2
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作者 陈端石 刘恩泽 关元洪 《上海交通大学学报》 EI CAS CSCD 北大核心 2000年第4期499-502,共4页
由于声反馈通道向 ANC系统引入了新的极点 ,导致系统有失稳的可能性 .为了补偿反馈通道的反馈增益 ,引入具有零极点的 IIR滤波器结构和 FU- LMS算法 .通过理论分析和计算机仿真 ,讨论了 FU- LMS算法各参数对系统性能的影响 .结果表明 ,... 由于声反馈通道向 ANC系统引入了新的极点 ,导致系统有失稳的可能性 .为了补偿反馈通道的反馈增益 ,引入具有零极点的 IIR滤波器结构和 FU- LMS算法 .通过理论分析和计算机仿真 ,讨论了 FU- LMS算法各参数对系统性能的影响 .结果表明 ,采用 IIR滤波器结构的 ANC系统 。 展开更多
关键词 FU-LMS算法 anc系统 IIR滤波器 噪声控制
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基于抗串扰自适应噪声抵消器的参考输入预处理ANC系统
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作者 李想 鲍雪山 王建国 《振动与冲击》 EI CSCD 北大核心 2008年第10期111-114,196,共4页
针对有信号存在情况下的声场有源噪声抵消(ANC)应用,提出了一种能够在降低声场干扰噪声的同时,尽量减小信号失真的ANC系统。通过抗串扰自适应噪声抵消器(CRANC)对传统ANC系统的参考输入进行预处理,降低了ANC系统中信号和噪声之间的相互... 针对有信号存在情况下的声场有源噪声抵消(ANC)应用,提出了一种能够在降低声场干扰噪声的同时,尽量减小信号失真的ANC系统。通过抗串扰自适应噪声抵消器(CRANC)对传统ANC系统的参考输入进行预处理,降低了ANC系统中信号和噪声之间的相互干扰,在理论上保证了系统具有声场信噪比提升能力。理论分析和仿真对比实验表明,该系统比现有系统具有更可靠的信号背景下ANC能力。 展开更多
关键词 声学 主动噪声控制(anc) 抗串扰自适应噪声抵消器(CRanc) 处理增益 信号失真度 Itakrua失真测度
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沈阳2次降水过程ANC和TRACER检验分析
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作者 李大为 李典 +2 位作者 王丽莉 孟鹏 李崇 《中国农学通报》 2015年第17期180-185,共6页
随着大城市的不断发展和社会对于气象精细化要求的提高,临近预报特别是突发性灾害天气的临近预报已经成为了社会关注的重点。为了提升短临预报能力,沈阳市气象局先后引进了ANC和TRACER系统,但是由于使用时间较短,之前还没有总结出对于2... 随着大城市的不断发展和社会对于气象精细化要求的提高,临近预报特别是突发性灾害天气的临近预报已经成为了社会关注的重点。为了提升短临预报能力,沈阳市气象局先后引进了ANC和TRACER系统,但是由于使用时间较短,之前还没有总结出对于2个系统预报产品的订正技术。本研究通过2013年10月10日与2014年8月24日沈阳2次大雨到暴雨天气过程,总结出ANC和TRACER在短临预报中的不同,ANC的优势更侧重于局地性的强对流天气的预报,而TRACER更有利于相对大范围的、连续性的降水预报。希望研究结果能够给预报员利用ANC和TRACER制作沈阳地区精细化预报预提供订正方法和依据。 展开更多
关键词 anc TRACER 临近预报 雷暴单体
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用同源ANC技术提取金属跌落物冲击信号
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作者 毛汉领 陈仲仪 《广西大学学报(自然科学版)》 CAS CSCD 1995年第3期218-222,共5页
引入同源ANC的概念,并提出改进的变步长的LMS算法EVS,建立基于EVS算法的同源ANC系统,成功地提取了在小信噪比下测得的金属跌落物冲击信号。
关键词 金属跌落物 冲击信号 anc 机械设备 故障诊断
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Effect of Low Temperature and Sparse Light Conditions on Cold Tolerance of Different Rice Lines at Seedling Stage
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作者 马增凤 刘驰 +1 位作者 张月雄 黄大辉 《Agricultural Science & Technology》 CAS 2015年第10期2130-2134,2154,共6页
Low temperature and sparse light in early spring is one of the factors causing reduction for rice production. So it is important to develop cold tolerance cultivars. In the present study, cold tolerance characters of ... Low temperature and sparse light in early spring is one of the factors causing reduction for rice production. So it is important to develop cold tolerance cultivars. In the present study, cold tolerance characters of 36 parents and 423 rice lines from 68 hybrid groups were investigated at seedling stage under low tempera- ture and sparse light conditions in field. There were 10 parent accessions with strong cold tolerance of level 1. Among them, 3 were common wild rice accessions; 4 were japonica rice cultivars; 2 were indica rice; 1 was offspring from hybrid be- tween indica and japonica.There were 33 lines with strong cold tolerance of level 1 from the hybrid groups of common wild rice,and 15 from the hybrid groups of IRBB5, and only 3 from the hybrid groups of BPHR96. There were abundant cold tolerance resources in rice germplasm. It was feasible to develop cold tolerance cul- tivars from the hybrids among common wild rice, japonica cultivars and indica culti- vars. 展开更多
关键词 Common wild rice (Oryza rufipogon Griff.) JAPONICA INDICA Cold toler- ance Low temperature and sparse light
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基于在线BNC和ANC的新视野大学英语词汇研究
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作者 王大鹏 《齐齐哈尔大学学报(哲学社会科学版)》 2010年第1期122-124,共3页
本文基于语料库,探讨如何把"在线语料库"引入大学英语词汇教学和用其进行教材评估。以新视野大学英语(四)第一章课后习题Collocation为例,用实证方式阐述如何利用Mark Davies的在线BNC和ANC进行词汇类联接、搭配和语义韵的研... 本文基于语料库,探讨如何把"在线语料库"引入大学英语词汇教学和用其进行教材评估。以新视野大学英语(四)第一章课后习题Collocation为例,用实证方式阐述如何利用Mark Davies的在线BNC和ANC进行词汇类联接、搭配和语义韵的研究。"在线语料库"在英语教学中的利用,是语料库与外语教学相结合的又一良好典范。 展开更多
关键词 在线语料库 BNC anc 新视野大学英语 搭配
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SPEECH ENHANCEMENT BASED ON SECOND ORDER ARCHITECTURE AND INFORMATION MAXIMIZATION THEORY
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作者 虞晓 胡光锐 陈玮 《Journal of Shanghai Jiaotong university(Science)》 EI 1998年第2期58-62,共5页
Based on the idea of adaptive noise cancellation (ANC), a second order architecture is proposed for speech enhancement. According as the Information Maximization theory, the corresponding gradient descend algorithm is... Based on the idea of adaptive noise cancellation (ANC), a second order architecture is proposed for speech enhancement. According as the Information Maximization theory, the corresponding gradient descend algorithm is proposed. With real speech signals in the simulation, the new algorithm demonstrates its good performance in speech enhancement. The main advantage of the new architecture is that clean speech signals can be got with less distortion. 展开更多
关键词 SPEECH ENHancEMENT BLIND signal separation INFORMATION MAXIMIZATION anc
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Attendance and Utilization of Antenatal Care (ANC) Services: Multi-Center Study in Upcountry Areas of Uganda
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作者 Peter Chris Kawungezi Douglas AkiiBua +9 位作者 Carol Aleni Michael Chitayi Anxious Niwaha Andrew Kazibwe Elizabeth Sunya Eliud W. Mumbere Carol Mutesi Cathy Tukei Arabat Kasangaki Sarah Nakubulwa 《Open Journal of Preventive Medicine》 2015年第3期132-142,共11页
Introduction: Globally every year 529,000 maternal deaths occur, 99% of this in developing coun-tries. Uganda has high maternal and neonatal morbidity and mortality ratios, typical of many countries in sub-Saharan Afr... Introduction: Globally every year 529,000 maternal deaths occur, 99% of this in developing coun-tries. Uganda has high maternal and neonatal morbidity and mortality ratios, typical of many countries in sub-Saharan Africa. Recent findings reveal maternal mortality ratio of 435:100,000 live births and neonatal mortality rate of 29 deaths per 1000 live births in Uganda;these still remain a challenge. Women in rural areas of Uganda are two times less likely to attend ANC than the urban women. Most women in Uganda have registered late ANC attendance, averagely at 5.5 months of pregnancy and do not complete the required four visits. The inadequate utilization of ANC is greatly contributing to persisting high rates of maternal and neonatal mortality in Uganda. This study was set to identify the factors associated with late booking and inadequate utilization of Antenatal Care services in upcountry areas of Uganda. Method: Cross-sectional study design with mixed methods of interviewer administered questionnaires, focus group discussions and key informant interviews. Data was entered using Epidata and analyzed using Stata into frequency tables using actual tallies and percentages. Ethical approval was sought from SOM-REC MakCHS under approval number “#REC REF 2012-117” before conducting the study. Results: A total of four hundred one were enrolled with the majority being in the age group 20 - 24 years (mean age, 25.87 ± 6.26). Health workers played a great role (72.04%), followed by the media (15.46%) and friends (12.50%) in creating awareness about ANC. A significant number of respondents went to TBAs with reasons such as “near and accessible”, “my husband decided”, and “they are the only people I know”. 37.63% of the respondents considered getting an antenatal Card as an importance of ANC. 71 (19.67%) respondents gave a wrong opinion (late) on booking time with reasons like demands at work, no problems during pregnancy, advised by friends, just to get a card, long distance and others didn’t know. Almost half of the respondents never knew the recommended number of visits. Religion, occupation, level of education, and parity were found to influence place of ANC attendance, number of ANC visits and booking time. Husbands were necessary to provide financial support, accompany their wives ANC clinic, and ensure that they complete the visits. But their response was poor due to: fear of routine investigations and constrained economically. Conclusion: The study findings show the actual rural setting of ANC services attendance and utilization. Much sensitization has to be done specifically in these rural areas to empower pregnant women and their husbands as to improve ANC attendance and utilization. 展开更多
关键词 ANTENATAL CARE anc UTILIZATION ATTENDancE
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Apartheid and Resistance in South Africa 1948-1969
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作者 Boualem Belkacemi Yusuf Al-Ghailani 《History Research》 2016年第3期134-144,共11页
The paper discusses the historical establishment of the apartheid system in South Africa since 1948 and the resistance struggle of Africans against its racial policies until the year 1969. The first part of the paper ... The paper discusses the historical establishment of the apartheid system in South Africa since 1948 and the resistance struggle of Africans against its racial policies until the year 1969. The first part of the paper deals with the origins of white domination in South Africa, going back to mid-seventeenth century with the Dutch aggression against African tribes all the way through to the twentieth century and the appearance of the main political parties behind the ideology of apartheid. The second part of the paper focuses on the internal opposition to the segregationist state created by the whites in South Africa. Opponents came from different circles: intellectuals, politicians, churchmen, civil servants, lawyers, doctors, etc. But the most prominent opponent of Apartheid was the Africa National Congress (ANC) which was founded in 1912. The third and final part analyses the international struggle against apartheid in the United Nations forums. This opposition took first the form of political and diplomatic actions against the racial system of South Africa, and then was materialized by economic sanctions which revealed to be the most susceptible to affect seriously the apartheid regime. 展开更多
关键词 APARTHEID South Africa RESISTancE anc United Nations
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ANC、ALC、LNR、AMC及LMR对结外鼻型NK/T细胞淋巴瘤预后的预测价值探讨 被引量:2
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作者 苏畅 张明智 +6 位作者 李兆明 李玲 付晓瑞 王新华 常宇 张旭东 周志远 《河南医学研究》 CAS 2016年第5期800-804,共5页
目的以血常规结果为基础,探寻结外NK/T细胞淋巴瘤的预后指标。方法搜集133例临床结外鼻型NK/T细胞淋巴瘤患者的临床资料,进行回顾性统计学分析。结果以ROC曲线作为分析方法,ANC≥2×109/L组疗效较<2×109/L组好,两组间OS及PF... 目的以血常规结果为基础,探寻结外NK/T细胞淋巴瘤的预后指标。方法搜集133例临床结外鼻型NK/T细胞淋巴瘤患者的临床资料,进行回顾性统计学分析。结果以ROC曲线作为分析方法,ANC≥2×109/L组疗效较<2×109/L组好,两组间OS及PFS有明显差异;LNR<0.453组较LNR>0.453组疗效好,且两组间OS及PFS均有显著差异。结论 ANC与LNR对预测结外NK/T细胞淋巴瘤的预后及疗效有一定实用价值。 展开更多
关键词 NK/T细胞淋巴瘤 anc ALC LNR AMC LMR 预后
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Studies on the Avoidance of Cultural Conflicts from the Aspect of Relationship between Non-verbal Communication and Culture
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作者 于雪丽 《神州》 2014年第11期32-32,共1页
Nowadays,communication with foreign people isbecoming closer.While,misunderstandings occur frequently inthis process.The main purpose of this essay is to offer some pro-posals on the problem of misunderstandings and c... Nowadays,communication with foreign people isbecoming closer.While,misunderstandings occur frequently inthis process.The main purpose of this essay is to offer some pro-posals on the problem of misunderstandings and conflicts in inter-cultural communication from the aspect of relationship betweenculture and non-verbal communication. 展开更多
关键词 non-verbal communication CULTURE avoid-ance culture conflicts intercultural communication
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腺相关病毒AAV2/Anc80L65对原代培养的螺旋神经元形态标记效能的探究 被引量:1
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作者 刘耀谦 张振 +1 位作者 张博雅 陈正侬 《山东大学耳鼻喉眼学报》 CAS 2023年第3期1-6,20,共7页
目的探究含有神经元特异性启动子(human synapsin promoter,hSyn)及绿色荧光蛋白(enhanced green fluorescent protein,eGFP)标记的AAV2/Anc80L65-hSyn-eGFP病毒对体外培养的螺旋神经元(spiral ganglion neuron,SGN)形态的标记效果。方... 目的探究含有神经元特异性启动子(human synapsin promoter,hSyn)及绿色荧光蛋白(enhanced green fluorescent protein,eGFP)标记的AAV2/Anc80L65-hSyn-eGFP病毒对体外培养的螺旋神经元(spiral ganglion neuron,SGN)形态的标记效果。方法向体外培养的SGNs中加入一定量的AAV2/Anc80L65-hSyn-eGFP病毒,通过荧光显微镜在低倍镜下计数荧光神经元的比例以评估其对螺旋神经元细胞的转染的特异性和效率,在高倍镜下观察荧光神经元胞体及神经突的精细形态。并通过膜片钳实验验证该病毒在活体SGNs中的实际应用。结果AAV2/Anc80L65-hSyn-eGFP病毒对体外培养的SGNs具有很高的特异性和转染率,且不会产生明显的细胞毒性。同时,该病毒可以快速清晰地标记螺旋神经元胞体和神经突的形态且对神经元形态没有明显损伤。相比Tuj1荧光染色还可以标记更加精细的神经突结构,如丝状伪足。当应用于膜片钳实验中时,AAV2/Anc80L65-hSyn-eGFP病毒有助于神经元识别和定位,可极大提高SGNs膜片钳实验的效率和成功率。结论AAV2/Anc80L65-hSyn-eGFP适合作为标记体外培养的活体SGNs形态的理想工具。 展开更多
关键词 AAV2/anc80L65-hSyn-eGFP病毒 螺旋神经元形态 原代培养 标记效果
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Economic Impact of ANC Election Victory
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作者 John de Villiers Simon Schaefer 《ChinAfrica》 2014年第6期30-31,共2页
ON May 7, South Africans went to the polls in throngs to exercise their constitutional right to vote. In a country where the majority of the population wasonce excluded from casting their votes and from participating ... ON May 7, South Africans went to the polls in throngs to exercise their constitutional right to vote. In a country where the majority of the population wasonce excluded from casting their votes and from participating in the political decision making process, elections are an integral part of democracy for large parts of society, 展开更多
关键词 anc Economic Impact of anc Election Victory
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THE ANC-A Hundred Years On
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作者 Essop Pahad 《ChinAfrica》 2012年第3期24-25,共2页
Facing internal upheaval,the ANCs history of survival and triumph will help to face the challenges head on ON January 8,2012, the African National Congress(ANC),the oldest national liberation movement on the African... Facing internal upheaval,the ANCs history of survival and triumph will help to face the challenges head on ON January 8,2012, the African National Congress(ANC),the oldest national liberation movement on the African continent,celebrated its centenary. This historic milestone is a remarkable achievement.From 展开更多
关键词 anc THE anc-A Hundred Years On
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全程CRP、WBC、ANC联合检测在血液细菌感染中的应用 被引量:7
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作者 林永恩 胡静云 +1 位作者 陈栋 赖万强 《海南医学》 CAS 2011年第9期104-105,共2页
目的探讨外周血全程C反应蛋白(CRP)、白细胞(WBC)、中性粒细胞绝对值(ANC)在早期诊断血液细菌感染的应用价值。方法检测血液细菌培养阳性标本109份、细菌培养阴性发热患者标本67份,以66例健康体检者为对照,分析每组每份标本的WBC、中性... 目的探讨外周血全程C反应蛋白(CRP)、白细胞(WBC)、中性粒细胞绝对值(ANC)在早期诊断血液细菌感染的应用价值。方法检测血液细菌培养阳性标本109份、细菌培养阴性发热患者标本67份,以66例健康体检者为对照,分析每组每份标本的WBC、中性粒细胞绝对值、全程CRP值。结果血液细菌感染阳性组的WBC、中性粒细胞绝对值、CRP值分别为13.5±3.5、8.7±2.5、53.5±10.2;血液细菌感染阴性组分别为9.6±1.7、5.8±1.8、8.5±4.2;健康对照组分别为6.4±1.0、4.6±0.6、2.2±0.8;血液细菌感染组各指标与非细菌感染组、健康对照组间差异均有统计学意义。结论联合检测患者血液WBC、中性粒细胞绝对值ANC、CRP值可早期诊断患者是否血液细菌感染。 展开更多
关键词 血液细菌感染 WBC anc CRP HS-CRP
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Design of Eco-friendly Ultra-high Performance Concrete with Supplementary Cementitious Materials and Coarse Aggregate 被引量:4
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作者 JIANG Jinyang ZHOU Wenjing +4 位作者 CHU Hongyan WANG Fengjuan WANG Liguo FENG Taotao GUO Dong 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2019年第6期1350-1359,共10页
Aiming to investigate the mix design of eco-friendly UHPC with supplementary cementitious materials and coarser aggregates, we comprehensively studied the workability, microstructure, porosity, compressive strength, f... Aiming to investigate the mix design of eco-friendly UHPC with supplementary cementitious materials and coarser aggregates, we comprehensively studied the workability, microstructure, porosity, compressive strength, flexural strength, and Young’s modulus of UHPC. Relationship between compressive strength and Young’s modulus was obtained eventually. It is found that the compressive strength, flexural strength, and Young’s modulus of UHPC increase by 19.01%, 10.81%, and 5.99%, respectively, when 40 wt% cement is replaced with supplementary cementitious materials. The relationship between compressive strength and Young’s modulus of UHPC is an exponential form. 展开更多
关键词 ultra-high perform ance concrete ECO-FRIENDLY POROSITY compressive strength flexural strength Young’s modulus
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