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光催化 3

1T/2H-MoS2 1

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4-二硝基茴香醚 1

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H∞控制;零和动态博弈;强化学习;自适应动态规划;极小极大Q-学习;策略迭代 1

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用于评估共同作者的学术贡献的第一和其他合作者信用分配模式 Article

Li WEIGANG

《信息与电子工程前沿(英文)》 2017年 第18卷 第2期   页码 180-194 doi: 10.1631/FITEE.1600991

摘要: 共同作者学术贡献分配模式提供了固定或灵活的信用分配公式,并广泛应用于评估科学出版物共同作者的贡献。本文提出了一种新颖的“第一和其他(First and Others, F&O)合作者”分配模式。通过引入调整参数α和权重β,使得信用分配具备以下新的属性:(1)通过修改公式(调整参数α)或强调单个作者贡献(调整权重β)体现学术贡献分配的灵活性和适用性;(2)将第一作者的贡献与其他作者分开计算,第二作者的贡献会根据α参数的变化,呈现出拐点。文中提出相应定理和证明,揭示了“第一和其他(F&O)合作者”分配模式新的特性,应是对文献计量学基本理论的贡献。F&O模式亦可应用于“强调第一作者学术贡献”的策略。通过对一组来自化学、医学、心理学和哈佛-芝加哥调查数据的应用,F&O模式与其他方法进行了分析比较,若干测定系数的优化显示出本文方法的先进性。

关键词: 文献计量学;共同作者合作信用;H指数;信息计量;学者信息。    

应用指数平滑技术预测边坡位移

沈良峰

《中国工程科学》 2007年 第9卷 第6期   页码 94-97

摘要:

应用趋势型指数平滑模型根据其观测值的数据特点(具线性趋势),选取趋势型二次指数平滑的线性 预测公式和相应at,bt的计算公式及合适的平滑系数值进行计算

关键词: 指数平滑     预测边坡位移     自适应过滤    

指数多项式均匀样条模型

赵颜利,平萍,刘凤玉

《中国工程科学》 2008年 第10卷 第7期   页码 147-152

摘要:

给出了k( k ≥ 3) 阶指数多项式的均匀样条模型。该类模型具有很多与B 样条模型相同的性质,并 且增加了一个可调节的形状参数。

关键词: 指数多项式样条函数     B样条函数     形状参数    

燃气轮机燃烧室效率模化试验中压力指数的研究

杨锐,王应时

《中国工程科学》 2003年 第5卷 第10期   页码 83-87

摘要:

通过对2种不同类型的燃气轮机燃烧室的数值计算,研究了不同燃烧类型对燃气轮机燃烧室效率模化试验中压力指数选取的影响。结果表明,压力指数除受到燃料、余气系数等影响之外,燃烧类型也有很大影响。

关键词: 燃烧室效率模化试验     压力指数     数值模拟    

疾病危险度-共患病指数在单倍型造血干细胞移植中的应用 Article

莫晓冬, 张晓辉, 许兰平, 王昱, 闫晨华, 陈欢, 陈育红, 韩伟, 王峰蓉, 王景枝, 刘开彦, 黄晓军

《工程(英文)》 2021年 第7卷 第2期   页码 162-169 doi: 10.1016/j.eng.2020.12.005

摘要:

本文的研究目的是基于疾病危险度指数(disease risk index, DRI)和造血干细胞移植共患病指数(hematopoietic cell transplantation-specificHCT-CI),提出适合单倍型造血干细胞移植(haploidentical hematopoietic stem cell transplantation, haplo-HSCT)患者的疾病危险度-共患病指数

关键词: 疾病风险指数     疾病风险共病指数     造血细胞移植     共病指数     造血干细胞移植     单倍体    

Nonlinear dynamic analysis for elastic robotic arms

H. KORAYEM, H. N. RAHIMI

《机械工程前沿(英文)》 2011年 第6卷 第2期   页码 219-228 doi: 10.1007/s11465-011-0218-y

摘要:

The aim of the paper is to analyze the nonlinear dynamics of robotic arms with elastic links and joints. The main contribution of the paper is the comparative assessment of assumed modes and finite element methods as more convenient approaches for computing the nonlinear dynamic of robotic systems. Numerical simulations comprising both methods are carried out and results are discussed. Hence, advantages and disadvantages of each method are illustrated. Then, adding the joint flexibility to the system is dealt with and the obtained model is demonstrated. Finally, a brief description of the optimal motion generation is presented and the simulation is carried out to investigate the role of robot dynamic modeling in the control of robots.

关键词: robotic arms     elastic link     elastic joint     nonlinear dynamics     optimal control    

Endemicity of H9N2 and H5N1 avian influenza viruses in poultry in China poses a serious threat to poultry

Jiao HU,Xiufan LIU

《农业科学与工程前沿(英文)》 2016年 第3卷 第1期   页码 11-24 doi: 10.15302/J-FASE-2016092

摘要: The H9N2 and H5N1 avian influenza viruses (AIVs) have been circulating in poultry in China and become endemic since 1998 and 2004, respectively. Currently, they are prevalent in poultry throughout China. This endemicity makes them actively involved in the emergence of the novel lineages of other subtypes of influenza viruses, such as the well-known viruses of the highly pathogenic avian influenza (HPAI) H5N2 and the 2013 novel H7N7, H7N9 and H10N8 subtypes, thereby threatening both the poultry industry and public health. Here, we will review briefly the prevalence and evolution, pathogenicity, transmission, and disease control of these two subtypes and also discuss the possibility of emergence of potentially virulent and highly transmissible AIVs to humans.

关键词: avian influenza virus     H9N2     H5N1     novel viruses     public health    

Development progress of China’s 600 km/h high-speed magnetic levitation train

《工程管理前沿(英文)》 2022年 第9卷 第3期   页码 509-515 doi: 10.1007/s42524-022-0199-z

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关键词: 600 km/h high-speed magnetic levitation train     development history     technological innovation    

growth of a-few-layered MoS on CdS nanorod for high efficient photocatalytic H production

《能源前沿(英文)》 2021年 第15卷 第3期   页码 752-759 doi: 10.1007/s11708-021-0779-3

摘要: An ultrathin MoS2 was grown on CdS nanorod by a solid state method using sulfur powder as sulfur source for photocatalytic H2 production. The characterization result reveals that the ultrathin MoS2 nanosheets loaded on CdS has a good contact state. The photoelectrochemical result shows that MoS2 not only are beneficial for charge separation, but also works as active sites, thus enhancing photocatalytic activity. Compared with pure CdS, the photocatalytic activity of MoS2 loaded CdS was significantly improved. The hydrogen evolution rate on m(MoS2): m(CdS) = 1: 50 (m is mass) reaches 542 μmol/h, which is 6 times of that on pure CdS (92 μmol/h). This work provides a new design for photocatalysts with high photocatalytic activities and provides a deeper understanding of the effect of MoS2 on enhancing photocatalytic activity.

关键词: photocatalytic H2 production     CdS     MoS2 cocatalyst     charge separation    

Probes and nano-delivery systems targeting NAD(P)H:quinone oxidoreductase 1: a mini-review

《化学科学与工程前沿(英文)》 2023年 第17卷 第2期   页码 123-138 doi: 10.1007/s11705-022-2194-7

摘要: The two-electron cytoplasmic reductase NAD(P)H:quinone oxidoreductase 1 is expressed in many tissues. NAD(P)H:quinone oxidoreductase 1 is well-known for being highly expressed in most cancers. Therefore, it could be a target for cancer therapy. Because it is a quinone reductase, many bioimaging probes based on quinone structures target NAD(P)H:quinone oxidoreductase 1 to diagnose tumours. Its expression is higher in tumours than in normal tissues, and using target drugs such as β-lapachone to reduce side effects in normal tissues can help. However, the physicochemical properties of β-lapachone limit its application. The problem can be solved by using nanosystems to deliver β-lapachone. This mini-review summarizes quinone-based fluorescent, near-infrared and two-photon fluorescent probes, as well as nanosystems for delivering the NAD(P)H:quinone oxidoreductase 1-activating drug β-lapachone. This review provides valuable information for the future development of probes and nano-delivery systems that target NAD(P)H:quinone oxidoreductase 1.

关键词: NAD(P)H:quinone oxidoreductase 1     cancer therapy     target     probe     nanosystem    

Influence of short chain ceramides and lipophilic penetration enhancers on the nano-structure of stratum corneum model membranes studied using neutron diffraction

Annett SCHROETER, Tanja ENGELBRECHT, Reinhard H. H. NEUBERT

《化学科学与工程前沿(英文)》 2013年 第7卷 第1期   页码 29-36 doi: 10.1007/s11705-013-1302-0

摘要: Oriented stratum corneum model lipid membranes were used to study the influence of the short chain ceramides (CER)[NP] and [AP] as well as the impact of the lipophilic penetration enhancer molecules oleic acid (OA) and isopropyl myristate (IPM) on the lipid nanostructure. The influence of the enhancer molecules were studied using specifically deuterated OA and IPM and neutron diffraction. H NMR spectroscopy was used to study the impact of the ceramides’ degree of order within the stratum corneum model lipid membranes. It was found that CER[NP] forms two very stable phases with high resistance against temperature increase. Phase B showed unusual hydration behavior as no water uptake of this phase was observed. The H NMR spectroscopic measurements showed that CER[NP] based ternary model system had a higher state of lamellar order in comparison to CER[AP] based lipid matrix. The studies confirmed that the short chain ceramides, particularly CER[NP], have a very high impact on the integrity of the Stratum corneum lipid bilayers. The penetration enhancer OA has not influenced the repeat distance of the model membrane based on CER[AP], and was not able to induce a phase separation in the investigated lipid matrix. However, a disorder and a fluidisation of the model membranes were observed when OA was incorporated. IPM showed the same effect but two phases (assigned as phase A and B) appeared, when IPM was used as penetration enhancer and incorporated into the model membrane. Furthermore, two arrangements of IPM were identified in phase A using deuterated IPM. A model of the nanostructure of the Stratum corneum lipid membranes is presented.

关键词: nano-structure of the stratum corneum     ceramide     penetration enhancer     model membrane     neutron diffraction     2H NMR spectroscopy    

综合空气污染和非适宜温度相关死亡风险构建空气健康指数 Article

张庆丽, 陈仁杰, 印冠锦, 杜喜浩, 孟夏, 邱杨, 阚海东, 周脉耕

《工程(英文)》 2022年 第14卷 第7期   页码 156-162 doi: 10.1016/j.eng.2021.05.006

摘要:

综合的空气健康指数有助于强调多种大气危险因素的健康风险,有利于向公众传达不良大气环境的总体风险。本文试图通过整合我国大气污染和非适宜温度相关的每日死亡风险,建立一种新的空气健康指数(Air Health Index, AHI)。

关键词: 大气污染     温度     空气健康指数     死亡     时间序列     风险交流    

A new technique for islanding operation of distribution network connected with mini hydro

LAGHARI,H. MOKHLIS,M. KARIMI,A. H. A. BAKAR,Hasmaini MOHAMAD

《信息与电子工程前沿(英文)》 2015年 第16卷 第5期   页码 418-427 doi: 10.1631/FITEE.1400309

摘要: An islanding operation of a distribution network is a topic of interest due to the significant penetration of distributed generation (DG) in a power system network. However, controlling the frequency of an islanded distribution system remains an unresolved issue, especially when the load exceeds the generation. This paper presents a new technique for a successful islanding operation of a distribution network connected with multiple mini hydro based DGs. The proposed technique is based on three main parts. The first part uses an islanding detection technique to detect the islanding event correctly. The second part consists of a power imbalance estimation module (PIEM), which determines the power imbalance between the generation and load demand. The third part consists of a load shedding controller, which receives the power imbalance value and performs load shedding according to load priority. The proposed technique is validated on an 11 kV existing Malaysia distribution network. The simulation results show that the proposed technique is effective in performing a successful islanding operation by shedding a significant number of loads.

关键词: Islanding operation     Mini hydro     Distributed generation (DG)     Islanding detection     Load shedding    

Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

《能源前沿(英文)》 2017年 第11卷 第1期   页码 85-91 doi: 10.1007/s11708-016-0437-3

摘要: The intrinsic a-Si:H passivation layer inserted between the doped a-Si:H layer and the c-Si substrate is very crucial for improving the performance of the a-Si:H/c-Si heterojunction (SHJ) solar cell. The passivation performance of the a-Si:H layer is strongly dependent on its microstructure. Usually, the compact a-Si:H deposited near the transition from the amorphous phase to the nanocrystalline phase by plasma enhanced chemical vapor deposition (PECVD) can provide excellent passivation. However, at the low deposition pressure and low deposition power, such an a-Si:H layer can be only prepared in a narrow region. The deposition condition must be controlled very carefully. In this paper, intrinsic a-Si:H layers were prepared on n-type Cz c-Si substrates by 27.12 MHz PECVD at a high deposition pressure and high deposition power. The corresponding passivation performance on c-Si was investigated by minority carrier lifetime measurement. It was found that an excellent a-Si:H passivation layer could be obtained in a very wide deposition pressure and power region. Such wide process window would be very beneficial for improving the uniformity and the yield for the solar cell fabrication. The a-Si:H layer microstructure was further investigated by Raman and Fourier transform infrared (FTIR) spectroscopy characterization. The correlation between the microstructure and the passivation performance was revealed. According to the above findings, the a-Si:H passivation performance was optimized more elaborately. Finally, a large-area SHJ solar cell with an efficiency of 22.25% was fabricated on the commercial 156 mm pseudo-square n-type Cz c-Si substrate with the open-circuit voltage ( ) of up to 0.732 V.

关键词: PECVD     high pressure and high power     a-Si:H microstructure     passivation     heterojunction solar cell    

Research progress on human infection with avian influenza H7N9

Xiaoxin Wu, Lanlan Xiao, Lanjuan Li

《医学前沿(英文)》 2020年 第14卷 第1期   页码 8-20 doi: 10.1007/s11684-020-0739-z

摘要: Since the first case of novel H7N9 infection was reported, China has experienced five epidemics of H7N9. During the fifth wave, a highly pathogenic H7N9 strain emerged. Meanwhile, the H7N9 virus continues to accumulate mutations, and its affinity for the human respiratory epithelial sialic acid 2-6 receptor has increased. Therefore, a pandemic is still possible. In the past 6 years, we have accumulated rich experience in dealing with H7N9, especially in terms of virus tracing, epidemiological research, key site mutation monitoring, critical disease mechanisms, clinical treatment, and vaccine development. In the research fields above, significant progress has been made to effectively control the spread of the epidemic and reduce the fatality rate. To fully document the research progress concerning H7N9, we reviewed the clinical and epidemiological characteristics of H7N9, the key gene mutations of the virus, and H7N9 vaccine, thus providing a scientific basis for further monitoring and prevention of H7N9 influenza epidemics.

关键词: H7N9     pandemic     epidemiology     mutations     vaccine     influenza    

标题 作者 时间 类型 操作

用于评估共同作者的学术贡献的第一和其他合作者信用分配模式

Li WEIGANG

期刊论文

应用指数平滑技术预测边坡位移

沈良峰

期刊论文

指数多项式均匀样条模型

赵颜利,平萍,刘凤玉

期刊论文

燃气轮机燃烧室效率模化试验中压力指数的研究

杨锐,王应时

期刊论文

疾病危险度-共患病指数在单倍型造血干细胞移植中的应用

莫晓冬, 张晓辉, 许兰平, 王昱, 闫晨华, 陈欢, 陈育红, 韩伟, 王峰蓉, 王景枝, 刘开彦, 黄晓军

期刊论文

Nonlinear dynamic analysis for elastic robotic arms

H. KORAYEM, H. N. RAHIMI

期刊论文

Endemicity of H9N2 and H5N1 avian influenza viruses in poultry in China poses a serious threat to poultry

Jiao HU,Xiufan LIU

期刊论文

Development progress of China’s 600 km/h high-speed magnetic levitation train

期刊论文

growth of a-few-layered MoS on CdS nanorod for high efficient photocatalytic H production

期刊论文

Probes and nano-delivery systems targeting NAD(P)H:quinone oxidoreductase 1: a mini-review

期刊论文

Influence of short chain ceramides and lipophilic penetration enhancers on the nano-structure of stratum corneum model membranes studied using neutron diffraction

Annett SCHROETER, Tanja ENGELBRECHT, Reinhard H. H. NEUBERT

期刊论文

综合空气污染和非适宜温度相关死亡风险构建空气健康指数

张庆丽, 陈仁杰, 印冠锦, 杜喜浩, 孟夏, 邱杨, 阚海东, 周脉耕

期刊论文

A new technique for islanding operation of distribution network connected with mini hydro

LAGHARI,H. MOKHLIS,M. KARIMI,A. H. A. BAKAR,Hasmaini MOHAMAD

期刊论文

Plasma enhanced chemical vapor deposition of excellent a-Si:H passivation layers for a-Si:H/c-Si heterojunction

Lei ZHAO,Wenbin ZHANG,Jingwei CHEN,Hongwei DIAO,Qi WANG,Wenjing WANG

期刊论文

Research progress on human infection with avian influenza H7N9

Xiaoxin Wu, Lanlan Xiao, Lanjuan Li

期刊论文