资源类型

期刊论文 13

年份

2023 3

2022 1

2020 2

2019 2

2018 1

2017 2

2011 1

2005 1

展开 ︾

关键词

交通基础设施 1

优化 1

优化设计 1

信号消噪;深度自适应阈值学习网络;多尺度特征融合;调制识别 1

方案选择 1

旅行商问题;果蝇优化算法;淘汰机制;视觉搜索;操作算子 1

智能化 1

水爆清砂 1

消除方法 1

热害治理 1

煤矿 1

真空制冰 1

粗晶 1

结构健康监测 1

结构消纳 1

自动化施工 1

铸钢 1

集中降温系统 1

展开 ︾

检索范围:

排序: 展示方式:

Achievements of the national malaria control and elimination program in the People’s Republic of China

《医学前沿(英文)》 2023年 第17卷 第1期   页码 85-92 doi: 10.1007/s11684-021-0917-7

摘要: In 2017, China achieved the target of zero indigenous malaria case for the first time, and has been certified as malaria free by World Health Organization in 2021. To further summarize the historical achievements and technical experiences of the elimination program, a project on the Roadmap Analysis and Verification for Malaria Elimination in China was carried out. Results of the project were compiled and published as the Atlas of Malaria Transmission in China (The Atlas). The Atlas using modern digital information technologies, has been supported by various data from 24 malaria endemic provinces of China since 1950, to assess the changes in malaria epidemic patterns from 1950 to 2019 at national and provincial levels. The Atlas is designed as two volumes, including a total of 1850 thematic maps and more than 130 charts, consisting of introductory maps, thematic maps of malaria epidemic and control at national and provincial levels. It objectively and directly shows the epidemic history, evolution process, and great achievements of the national malaria control and elimination program in China. The Atlas has important reference value for summing up historical experience in the national malaria elimination program of China, and malaria control and elimination in other endemic countries in the world.

关键词: malaria     transmission     control     elimination     China     atlas    

Laboratory diagnosis for malaria in the elimination phase in China: efforts and challenges

《医学前沿(英文)》 2022年 第16卷 第1期   页码 10-16 doi: 10.1007/s11684-021-0889-7

摘要: Malaria remains a global health challenge, although an increasing number of countries will enter pre-elimination and elimination stages. The prompt and precise diagnosis of symptomatic and asymptomatic carriers of Plasmodium parasites is the key aspect of malaria elimination. Since the launch of the China Malaria Elimination Action Plan in 2010, China has formulated clear goals for malaria diagnosis and has established a network of malaria diagnostic laboratories within medical and health institutions at all levels. Various external quality assessments were implemented, and a national malaria diagnosis reference laboratory network was established to strengthen the quality assurance in malaria diagnosis. Notably, no indigenous malaria cases have been reported since 2017, but the risk of re-establishment of malaria transmission cannot be ignored. This review summarizes the lessons about malaria diagnosis in the elimination phase, primarily including the establishments of laboratory networks and quality control in China, to better improve malaria diagnosis and maintain a malaria-free status. A reference is also provided for countries experiencing malaria elimination.

关键词: malaria     laboratory diagnosis     quality control     malaria elimination     China    

Efficient promotion of methane hydrate formation and elimination of foam generation using fluorinated

Quan CAO, Dongyan XU, Huanfei XU, Shengjun LUO, Rongbo GUO

《能源前沿(英文)》 2020年 第14卷 第3期   页码 443-451 doi: 10.1007/s11708-020-0683-2

摘要: Methane hydrate preparation is an effective method to store and transport methane. In promoters to facilitate methane hydrate formation, homogeneous surfactant solutions, sodium dodecyl sulfate (SDS) in particular, are more favorable than heterogeneous particles, thanks to their faster reaction rate, more storage capacity, and higher stability. Foaming, however, could not be avoided during hydrate dissociation with the presence of SDS. This paper investigated the ability of five fluorinated surfactants: potassium perfluorobutane sulfonate (PBS), potassium perfluorohexyl sulfonate (PHS), potassium perfluorooctane sulfonate (POS), ammonium perfluorooctane sulfonate (AOS), and tetraethylammonium perfluorooctyl sulfonate (TOS) to promote methane hydrate formation. It was found that both PBS and PHS achieve a storage capacity of 150 ( , the volume of methane that can be stored by one volume of water) within 30 min, more than that of SDS. Cationic ions and the carbon chain length were then discussed on their effects during the formation. It was concluded that PBS, PHS, and POS produced no foam during hydrate dissociation, making them promising promoters in large-scale application.

关键词: methane hydrate     fluorinated surfactants     homogeneous promoter     foam elimination     stability    

Current advances in the elimination of hepatitis B in China by 2030

null

《医学前沿(英文)》 2017年 第11卷 第4期   页码 490-501 doi: 10.1007/s11684-017-0598-4

摘要:

With its 78 million chronic carriers, hepatitis B virus (HBV) infection is still one of the leading public health challenges in China. Over the last two decades, China has made great progress on the prevention of HBV transmission through national vaccination programs. Zero transmission from mother to infant has been proposed as the current goal. Available anti-HBV therapy is efficacious in suppressing HBV replication; however, it fails to completely cure patients with chronic hepatitis B and even requires lifelong treatment. To reduce the costs and improve the efficacy, several trials have been recently conducted in China to optimize the current anti-HBV managements. Novel biomarkers were identified to predict treatment outcomes, and new promising treatment strategies were developed. Reports also indicate that coinfections of HBV with other hepatotropic viruses and human immunodeficiency virus are common in China and cause severe liver diseases, which should be recognized early and treated properly. Work is still needed to eliminate hepatitis B in China by 2030.

关键词: HBV     CHB     biomarker     functional cure     coinfection    

铸钢粗晶的成因及消除方法的研究

邹安全,邓沛然

《中国工程科学》 2005年 第7卷 第4期   页码 79-82

摘要:

通过对ZG32Cr06铸钢粗晶成因的分析及消除粗晶的工艺性能试验,探讨了粗晶导致铸件断裂的机理。试验证明,由于浇铸温度过高,水爆清砂时开箱过早而产生的粗晶可以用热处理方法消除,同时提出了铸件在浇铸时防止粗晶的措施。

关键词: 铸钢     粗晶     水爆清砂     消除方法    

Extension of pilot tests of cyanide elimination by ozone from blast furnace gas washing water through

Ismael Matino, Valentina Colla, Teresa A. Branca

《化学科学与工程前沿(英文)》 2018年 第12卷 第4期   页码 718-730 doi: 10.1007/s11705-018-1771-2

摘要:

For improving wastewater quality, one of the dare of steelworks is reducing cyanide in wastewater of gas washing treatment of blast furnaces. Costs of existing treatments, stringent environmental regulations and changeable composition of water from gas treatment, have led to study how available treatments can be modified and to examine new ones. Ozonation is one of cyanide treatments, tested within a European project. A process model was set up with Aspen Plus®, to assess operating conditions and wastewater distinctive characteristics and to demonstrate treatment robustness. Process was modeled by theoretical reactors, taking into account all more affecting reactions. A genetic algorithm was exploited to find kinetic parameters of these reactions. After validation, the model was used to analyse scenarios, by considering also real contexts. Pilot tests were extended, process knowledge was enhanced and suggestions were obtained. To promote cyanide removal with ozone, temperature and pH values were 30°C and 10, respectively. With an ozone (mg/h)/water (L/h) ratio of 100 mg/L, batch mode ensure reaching cyanide regulation limit (0.2 mg/L) after maximum 4.5 h, if initial amount was less than 20 mg/L. Higher removal was obtained than in continuous mode due to constraints related to this last run. Higher wastewater contamination needed further time and more ozone.

关键词: blast furnace     cyanide removal     gas washing water     modeling and simulation     ozonation    

Impacts of advanced treatment processes on elimination of antibiotic resistance genes in a municipal

Lian Yang, Qinxue Wen, Zhiqiang Chen, Ran Duan, Pan Yang

《环境科学与工程前沿(英文)》 2019年 第13卷 第3期 doi: 10.1007/s11783-019-1116-5

摘要:

The distributions of ARGs were monitored in a WWTP in Harbin during six months.

CASS had the best removal efficacy of ARGs compared to other processes in the WWTP.

UV disinfection could effectively control the HGT.

AGAC significantly remove ARGs and organics due to its high absorption capacity.

Combination of ozone and AGAC significantly improve removal of ARGs and organics.

关键词: Antibiotic resistance genes (ARGs)     Wastewater treatment plant (WWTP)     Ultraviolet (UV)     Ozonation     Granular activated carbon (GAC)    

Efficient elimination of environmental pollutants through sorption-reduction and photocatalytic degradation

Njud S. Alharbi, Baowei Hu, Tasawar Hayat, Samar Omar Rabah, Ahmed Alsaedi, Li Zhuang, Xiangke Wang

《化学科学与工程前沿(英文)》 2020年 第14卷 第6期   页码 1124-1135 doi: 10.1007/s11705-020-1923-z

摘要: With the rapid development of industrial, large amounts of different inorganic and organic pollutants are released into the natural environments. The efficient elimination of environmental pollutants, i.e., photocatalytic degradation of persistent organic pollutants into nontoxic organic/inorganic chemicals, solidification or sorption-reduction of heavy metal ions, is crucial to protect the environment. Nanomaterials with large surface area, active sites and abundant functional groups could form strong surface complexes with different kinds of pollutants and thereby could efficiently eliminate the pollutants from the aqueous solutions. In this review, we mainly focused on the recent works about the synthesis of nanomaterials and their applications in the efficient elimination of different organic and inorganic pollutants from wastewater and discussed the interaction mechanism from batch experimental results, the advanced spectroscopy techniques and theoretical calculations. The adsorption and the photocatalytic reduction of organic pollutants and the sorption/reduction of heavy metal ions are generally considered as the main methods to decrease the concentration of pollutants in the natural environment. This review highlights a new way for the real applications of novel nanomaterials in environmental pollution management, especially for the undergraduate students to understand the recent works in the elimination of different kinds of inorganic and organic chemicals in the natural environmental pollution management.

关键词: nanomaterials     sorption-reduction     photocatalytic degradation     organic pollutants     heavy metal ions    

孔庄煤矿集中降温方案的选择与优化

吴继忠,刘祥来,姚向东,王建军

《中国工程科学》 2011年 第13卷 第11期   页码 59-67

摘要:

从孔庄煤矿井筒布置和矿井生产条件出发,先后总结、分析了片冰降温系统、热-电-乙二醇降温系统、井下低温水排热的井下集中降温系统(HEMS)和真空制冰降温系统。从集中降温方案效果、投资、降温系统运行稳定性、井筒输冷管路安装、矿井制冷水质、井下制冷排热等方面综合考虑,适合孔庄煤矿特点的集中降温途径只能是真空制冰降温方案,为矿井三期改扩建工程按期投产、验收创造了条件。同时,该降温工程的实施必将填补我国在矿井集中降温领域的一项技术空白,并在制冰技术、输冰管道、输冰工艺、压风冷却、井下融冰工艺、制冰节能技术上取得突破

关键词: 煤矿     热害治理     集中降温系统     真空制冰     方案选择     优化    

交通基础设施智能化进展 Review

杜彦良, 伊廷华, 李晓军, 戎晓力, 董陇军,王 大为, 高阳, 冷真

《工程(英文)》 2023年 第24卷 第5期   页码 240-253 doi: 10.1016/j.eng.2023.01.011

摘要:

信息化社会背景下,土木工程科学与技术的发展正经历着深刻的变革,为传统建筑业的转型升级提供了千载难逢的历史性机遇。借助材料科学、计算机、人工智能和自动化控制等领域的前沿技术,新一代交通基础设施正朝着智能化方向快速发展,全球主要发达国家均因地制宜地大力推动以该方向为核心的交通基础设施行业革新战略。本文首先简述了交通基础设施智能化的基本定义、科学内涵和发展历程;然后以全生命周期为主线,系统梳理了交通基础设施在设计、施工、运维和消纳4 个阶段中智能化技术的发展现状以及当前所面临的主要挑战;接着以世界首条基于智能化理念建造的铁路——京张高速铁路为例,综合展示了智能化技术的最新成就;文末从标准体系、理论方法和人才培养三个维度对交通基础设施智能化领域的未来发展趋势进行了展望。

关键词: 智能化     交通基础设施     优化设计     自动化施工     结构健康监测     结构消纳    

一种改进的果蝇优化算法及其在旅行商问题求解中的应用 Article

Lan HUANG, Gui-chao WANG, Tian BAI, Zhe WANG

《信息与电子工程前沿(英文)》 2017年 第18卷 第10期   页码 1525-1533 doi: 10.1631/FITEE.1601364

摘要: 旅行商问题(traveling salesman problem, TSP)是经典的NP(non-deterministic polynomial)难问题,在实际工程中有许多应用。而果蝇优化算法作为一种用于求解TSP问题的新群智能算法,具有易于理解、实现简单等优点。然而,该算法收敛速度慢、易陷入局部最优,从而导致寻优精度不高。为了有效求解TSP问题,本文提出了三种改进方法,以优化果蝇算法在TSP求解中的应用。一是,更加注重果蝇觅食行为中的视觉搜索能力,从而增强果蝇算法的收敛能力;二是,在果蝇优化算法中融入了淘汰机制以增加种群多样性;三是,提出了逆序操作算子和乘法操作算子,并将这两种基本操作算子运用到果蝇算法求解TSP问题上。本文对TSPLIB中的10个算例进行仿真实验,并与其它算法的实验结果进行对比,结果证明该算法不仅收敛速度快,而且寻优精度高。

关键词: 旅行商问题;果蝇优化算法;淘汰机制;视觉搜索;操作算子    

Elimination of antibiotic resistance genes and control of horizontal transfer risk by UV-based treatment

Virender K. Sharma, Xin Yu, Thomas J. McDonald, Chetan Jinadatha, Dionysios D. Dionysiou, Mingbao Feng

《环境科学与工程前沿(英文)》 2019年 第13卷 第3期 doi: 10.1007/s11783-019-1122-7

摘要:

Antibiotic-resistant bacteria and antibiotic resistance genes are in water bodies.

UV/chlorination method is better to remove ARGs than UV or chlorination alone.

Research on UV/hydrogen peroxide to eliminate ARGs is forthcoming.

UV-based photocatalytic processes are effective to degrade ARGs.

关键词: Antibiotic resistance bacteria     Advanced oxidation processes     Disinfection     Reactive chlorine species     Sulfate radicals     Reactive oxygen species    

具有深度阈值噪声消除的多尺度分析调制识别网络 Research Article

李响1,2,李一兵1,2,汤春瑞3,4,李迎松1,2

《信息与电子工程前沿(英文)》 2023年 第24卷 第5期   页码 742-758 doi: 10.1631/FITEE.2200253

摘要: 为了提高多变环境下调制信号识别的准确性、减少先验知识不足等因素对识别结果的影响,研究人员逐渐采用深度学习技术来替代传统的调制信号处理技术。为了解决低信噪比下调制信号识别精度低的问题,我们设计了一种具有深度阈值噪声消除的多尺度分析调制识别网络,在标签平滑的对称交叉熵函数作用下识别实际采集的调制信号。该网络由一个具有深度自适应阈值学习的消噪编码器和一个具有多尺度特征融合的解码器组成。将两个模块进行跳跃连接,共同作用以提高整体网络的鲁棒性。实验结果表明,该方法在低信噪比下比以前的方法具有更好的识别效果。该网络展示了对噪声阈值的灵活自学习能力以及所设计的特征融合模块对各种调制类型的多尺度特征获取的有效性。

关键词: 信号消噪;深度自适应阈值学习网络;多尺度特征融合;调制识别    

标题 作者 时间 类型 操作

Achievements of the national malaria control and elimination program in the People’s Republic of China

期刊论文

Laboratory diagnosis for malaria in the elimination phase in China: efforts and challenges

期刊论文

Efficient promotion of methane hydrate formation and elimination of foam generation using fluorinated

Quan CAO, Dongyan XU, Huanfei XU, Shengjun LUO, Rongbo GUO

期刊论文

Current advances in the elimination of hepatitis B in China by 2030

null

期刊论文

铸钢粗晶的成因及消除方法的研究

邹安全,邓沛然

期刊论文

Extension of pilot tests of cyanide elimination by ozone from blast furnace gas washing water through

Ismael Matino, Valentina Colla, Teresa A. Branca

期刊论文

Impacts of advanced treatment processes on elimination of antibiotic resistance genes in a municipal

Lian Yang, Qinxue Wen, Zhiqiang Chen, Ran Duan, Pan Yang

期刊论文

Efficient elimination of environmental pollutants through sorption-reduction and photocatalytic degradation

Njud S. Alharbi, Baowei Hu, Tasawar Hayat, Samar Omar Rabah, Ahmed Alsaedi, Li Zhuang, Xiangke Wang

期刊论文

孔庄煤矿集中降温方案的选择与优化

吴继忠,刘祥来,姚向东,王建军

期刊论文

交通基础设施智能化进展

杜彦良, 伊廷华, 李晓军, 戎晓力, 董陇军,王 大为, 高阳, 冷真

期刊论文

一种改进的果蝇优化算法及其在旅行商问题求解中的应用

Lan HUANG, Gui-chao WANG, Tian BAI, Zhe WANG

期刊论文

Elimination of antibiotic resistance genes and control of horizontal transfer risk by UV-based treatment

Virender K. Sharma, Xin Yu, Thomas J. McDonald, Chetan Jinadatha, Dionysios D. Dionysiou, Mingbao Feng

期刊论文

具有深度阈值噪声消除的多尺度分析调制识别网络

李响1,2,李一兵1,2,汤春瑞3,4,李迎松1,2

期刊论文