资源类型

期刊论文 18

年份

2023 4

2022 3

2021 3

2020 1

2019 2

2014 1

2011 1

2008 2

2007 1

展开 ︾

关键词

CAE 1

仿真优化 1

催化材料 1

区域协同 1

半导体硅片；8 in；12 in；产业协同；先进制程 1

大气污染；PM2.5；臭氧；气候变化；空气质量改善 1

智能驱动 1

机器学习 1

泰勒级数；关系谱；树突网络；假肢手；机器学习；工程 1

煤矿区；综合能源微网；物质流 ‒ 能量流 ‒ 碳流枢纽模型；碳能协同；低碳运行优化 1

生态资产 1

秦巴山区 1

第五范式 1

综合性能 1

自主品牌 1

跨学科专家的协同效应 1

高效开发 1

高质量发展 1

展开 ︾

检索范围：

排序： 展示方式：

Effect of fiber hybridization on energy absorption and synergy in concrete

Ahmadreza RAMEZANI, Mohammad Reza ESFAHANI

《结构与土木工程前沿（英文）》 2019年 第13卷 第6期   页码 1338-1349 doi: 10.1007/s17009-019-0558-2

摘要： In the present study, steel and polypropylene (PP) fibers have been utilized with the intent of obtaining hybrid fiber-reinforced concrete (HFRC) with desirable mechanical properties. An attempt has been made to scrutinize the properties of HFRC with the main concentration being on energy absorption characteristics of concrete and the efficacy of fiber hybridization in producing synergy. Accordingly, a total of 180 specimens, representing 20 different mixtures have been cast and evaluated through compressive, split tensile, and flexural tests. The relevant flexural toughness of the specimens was calculated using ASTM C1018, ASTM C1609, JSCE, and PCS methods, and the effectiveness of these methods was evaluated based on the experimental results. It was observed that steel fibers are more effective in the improvement of flexural toughness in the presence of PP fibers. Furthermore, synergy associated with the combination of fibers at different stages of deflection of the beam specimens was observed and analyzed.

关键词： hybrid fiber-reinforced concrete     synergy     toughness     steel fibers     polypropylene fibers    

HTML PDF 收藏

Numerical analysis on heat transfer enhancement by longitudinal vortex based on field synergy principle

WU Junmei, TAO Wenquan

《能源前沿（英文）》 2007年 第1卷 第3期   页码 365-369 doi: 10.1007/s11708-007-0055-1

摘要： Three-dimensional numerical simulation results are presented for a fin-and-tube heat transfer surface with vortex generators. The effects of the Reynolds number (from 800 to 2 000) and the attack angle (30º and 45º) of a delta winglet vortex generator are examined. The numerical results are analyzed on the basis of the field synergy principle to explain the inherent mechanism of heat transfer enhancement by longitudinal vortex. The secondary flow generated by the vortex generators causes the reduction of the intersection angle between the velocity and fluid temperature gradients. In addition, the computational evaluations indicate that the heat transfer enhancement of delta winglet pairs for an aligned tube bank fin-and-tube surface is more significant than that for a staggered tube bank fin-and-tube surface. The heat transfer enhancement of the delta winglet pairs with an attack angle of 45º is larger than that with an angle of 30º. The delta winglet pair with an attack angle of 45º leads to an increase in pressure drop, while the delta winglet pair with the 30º angle results in a slight decrease. The heat transfer enhancement under identical pumping power condition for the attack angle of 30º is larger than that for the attack angle of 45º either for staggered or for aligned tube bank arrangement.

关键词： computational     inherent mechanism     staggered     decrease     transfer surface    

HTML PDF 收藏

Enhanced synergy between Cu

Jingwei Zhang, Lingxin Kong, Yao Chen, Huijiang Huang, Huanhuan Zhang, Yaqi Yao, Yuxi Xu, Yan Xu, Shengping Wang, Xinbin Ma, Yujun Zhao

《化学科学与工程前沿（英文）》 2021年 第15卷 第3期   页码 666-678 doi: 10.1007/s11705-020-1982-1

摘要： As the substitution of common noble catalysts in the hydrogenation of carboxylic acid, a highly effective Cu-Ni/SiO catalyst was prepared by a novel stepwise ammonia evaporation method. Its performance in the gas-phase hydrogenation of acetic acid was further examined. With the introduction of Ni dopant, more stable Cu sites, which can adsorb more acetic acid, were formed due to the electron transfer from Cu to Ni. This makes more Cu sites available for hydrogen adsorption, which was suggested as the rate-determining step in acetic acid hydrogenation. A conversion of 99.6% was successfully achieved on this new Cu/SiO -0.5Ni catalyst, accompanied by the ethanol selectivity of 90%. The incorporation of nickel between copper nanoparticles enhances the synergistic effect between Cu and Cu . It also helps mitigate the aggregation of copper nanoparticles due to the Ostwald ripening effect induced by acetic acid and enhance the stability of copper catalyst in the conversion of carboxylic acid.

关键词： carboxylic acid     hydrogenation     copper     nickel     stability    

HTML PDF 收藏

Analysis of synergy degree and its influencing factors in hydropower EPC project management

Jiwei ZHU, Hua GAO, Jiangrui WANG

《工程管理前沿（英文）》 2021年 第8卷 第3期   页码 402-411 doi: 10.1007/s42524-020-0098-0

摘要： The use of engineering procurement construction (EPC) mode is currently a trend in hydropower engineering construction. The clarification of the internal relationship between hydropower EPC projects and the realization of synergy has great significance in improving management efficiency and implementation effect. In this work, a three-dimensional system and a system model of hydropower EPC project management synergy are constructed. The mechanism and factors that influence the degree of management synergy are analyzed on the basis of management synergy theory. Furthermore, the evaluation index system and the degree of synergy model are established, and grey relational analysis is utilized to identify the key factors that affect the synergy degree. Thus, this study aims to facilitate the hydropower EPC project management synergy, provide a quantitative method for synergy degree evaluation, and propose corresponding promotion strategies. Results show that the order degree of each subsystem presents a steady upward trend. Specifically, the order degree of the subsystem at the trial operation stage is low, which is the major restriction on the further improvement of the synergy degree of EPC project management. The key factors in improving the synergy level of hydropower EPC project management are mainly concentrated in the information and organization synergy subsystems, including the construction degree of information platform, the performance of functions, the timeliness of information transfer, and the functions of the information platform.

关键词： hydropower project     EPC mode     synergy degree model     grey relational analysis    

HTML PDF 收藏

Homoharringtonine synergy with oridonin in treatment of t(8; 21) acute myeloid leukemia

Weina Zhang, Ying Lu, Tao Zhen, Xinjie Chen, Ming Zhang, Ping Liu, Xiangqin Weng, Bing Chen, Yueying Wang

《医学前沿（英文）》 2019年 第13卷 第3期   页码 388-397 doi: 10.1007/s11684-018-0624-1

摘要： Collaboration of c-KIT mutations with AML1–ETO (AE) has been demonstrated to induce t(8; 21) acute myeloid leukemia (AML). Targeted therapies designed to eliminate AE and c-KIT oncoproteins may facilitate effective treatment of t(8; 21) AML. Homoharringtonine (HHT) features activity against tumor cells harboring c-KIT mutations, whereas oridonin can induce t(8; 21) AML cell apoptosis and AE cleavage. Therefore, studies should explore the efficacy of combination therapy with oridonin and HHT in t(8; 21) AML. In this study, we investigated the synergistic effects and mechanism of oridonin combined with HHT in t(8; 21) AML cell line and mouse model. The two drugs synergistically inhibited cell viability and induced significant mitochondrial membrane potential loss and apoptosis. Oridonin and HHT induced significant downregulation of c-KIT and its downstream signaling pathways and promoted AE cleavage. HHT increased intracellular oridonin concentration by modulating the expressions of MRP1 and MDR1, thus enhancing the effects of oridonin. The combination of oridonin and HHT prolonged t(8; 21) leukemia mouse survival. In conclusion, oridonin and HHT exert synergistic effects against t(8; 21) leukemia and , thereby indicating that their combination may be an effective therapy for t(8; 21) leukemia.

关键词： AML1–ETO     c-KIT     homoharringtonine     oridonin     t(8     21) AML     synergistic effect    

HTML PDF 收藏

Water resource conservation promotes synergy between economy and environment in China’s northern drylands

《环境科学与工程前沿（英文）》 2022年 第16卷 第3期 doi: 10.1007/s11783-021-1462-y

摘要：

•Considering evenness provides a more accurate assessment of sustainable development.

关键词： Water conservation     Environmental protection     Industry transformation     Evenness     Sustainable development     Dryland    

HTML PDF 收藏

investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based on field synergy

TAO Wenquan, WU Junmei

《能源前沿（英文）》 2008年 第2卷 第1期   页码 71-78 doi: 10.1007/s11708-008-0001-x

摘要： 3-D numerical simulations were presented for laminar flow and heat transfer characteristics in a rectangular channel with vortex generators. The effects of Reynolds number (from 800 to 3 000), the attack angle of vortex generator (from 15° to 90°) and the shape of vortex generator were examined. The numerical results were analyzed based on the field synergy principle. It is found that the inherent mechanism of the heat transfer enhancement by longitudinal vortex can be explained by the field synergy principle, that is, the second flow generated by vortex generators results in the reduction of the intersection angle between the velocity and fluid temperature gradient. The longitudinal vortex improves the field synergy of the large downstream region of longitudinal vortex generator (LVG) and the region near (LVG); however, transverse vortex only improves the synergy of the region near vortex generator. Thus, longitudinal vortex can enhance the integral heat transfer of the flow field, while transverse vortex can only enhance the local heat transfer. The synergy angle decreases with the increase of Reynolds number for the channel with LVG to differ from the result obtained from the plain channel, and the triangle winglet performs better than the rectanglar one under the same surface area condition.

关键词： inherent mechanism     integral     surface     rectanglar     longitudinal    

HTML PDF 收藏

以“区域协同”推动秦巴山区更高质量发展的对策建议

孙志燕,施戍杰

《中国工程科学》 2020年 第22卷 第1期   页码 25-31 doi: 10.15302/J-SSCAE-2020.01.004

摘要：

秦巴山区是我国11 个连片贫困区之一且生态价值极为突出，区域实现更高质量发展具有重要意义。本文在系统调研区域内地级市经济社会发展情况的基础上，重点对环秦巴山区域不同发展水平的城市空间相关性、产业结构的相似度进行定量分析。结果表明，区域内中心城市的辐射带动作用较弱，与贫困落后地区尚未形成联动发展；区域内产业高度同质化成为制约内生经济增长动力的瓶颈因素；基于行政区的发展模式使得区域的生态屏障功能被过度“碎片化”，导致区域生态环境压力加大。建议着眼于秦巴山脉生态系统的整体性，转变发展理念，突破一地一域的行政限制和条块分割，加强国家层面的顶层设计和战略引导，以“协同”为核心来推动区域更高质量发展。

关键词： 秦巴山区     区域协同     高质量发展     生态资产    

HTML PDF 收藏

palygorskite composite for the efficient remediation of oil spills via a dispersion-photodegradation synergy

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1365-3

摘要：

• A novel and multi-functional clay-based oil spill remediation system was constructed.

关键词： Palygorskite     TiO2     Pickering emulsion     Oil spill     Dispersion     Photodegradation    

HTML PDF 收藏

我国半导体硅片发展现状与展望

张果虎,肖清华,马飞

《中国工程科学》 2023年 第25卷 第1期   页码 68-78 doi: 10.15302/J-SSCAE-2023.01.002

摘要：

硅片是半导体关键的基础材料，我国半导体硅片对外依存度较高，增强硅片的自主保障能力，对提升我国半导体产业整体水平至关重要。本文重点围绕市场主流的8 in、12 in硅片，分析了全球半导体硅片的技术和产业发展现状，研判了全球半导体硅片产业未来的发展趋势，重点分析了我国半导体硅片的发展现状，指出我国半导体硅片在当前市场需求、宏观政策、配套能力、研发投入等利好因素下迎来难得的发展机遇，同时提出我国半导体硅片产业发展面临挑战，在此基础上，从进一步加强顶层设计和宏观规划、强化政策落实和政策持续性、协调支持产业链协同发展、布局研发集成电路先进制程用半导体硅片等方面提出对策建议，以期为推动我国半导体硅片向更高质量发展提供参考。

关键词： 半导体硅片；8 in；12 in；产业协同；先进制程    

HTML PDF 收藏

Evaluation of ecosystem health for regional development in the southwestern Beijing, China

LIU Xuehua, ZHANG Shuang, XU Haoyang, SHAO Xiaoming

《环境科学与工程前沿（英文）》 2008年 第2卷 第3期   页码 311-317 doi: 10.1007/s11783-008-0047-3

摘要： Ecosystem health assessment is one of the most important issues in regional ecological quality and safety studies. It also has a great significance to ecological conservation and regional development. This study focused on assessing the health status of forest, agriculture and urban ecosystems in the southwestern Beijing, China, including the Fangshan and Fengtai Districts. Based on field surveys and data collection, an assessment index system containing the vigor, organization and resilience factors was developed to measure the ecosystem health. Each index was scored from 1 to 5, representing five levels that contribute to the whole ecosystem health. The analytic hierarchy process (AHP) method was used to measure the weights of each index and three factors, and thus an overall score for a certain ecosystem was calculated. The results show that the forest ecosystem in the Fangshan District had higher health value than the Fengtai District, while the urban ecosystem had a slightly lower value in the Fangshan District than the Fengtai District. Both districts show lower resilience values in forest and urban ecosystems. Maintaining the ecosystem health will definitely benefit the long-term development of two districts. This study suggested that an approach for assessing the regional ecosystem health could be further developed to address spatial and synergy relationships between ecosystems and the three health factors.

关键词： hierarchy process     regional ecosystem     synergy     agriculture     resilience    

HTML PDF 收藏

A pseudocapacitive molecule-induced strategy to construct flexible high-performance asymmetric supercapacitors

《化学科学与工程前沿（英文）》 2023年 第17卷 第9期   页码 1208-1220 doi: 10.1007/s11705-023-2304-1

摘要： The combination of high-voltage windows and bending stability remains a challenge for supercapacitors. Here, we present an “advantage-complementary strategy” using sodium lignosulfonate as a pseudocapacitive molecule to regulate the spatial stacking pattern of graphene oxide and the interfacial architectures of graphene oxide and polyaniline. Flexible and sustainable sodium lignosulfonate-based electrodes are successfully developed, showing perfect bending stability and high electronic conductivity and specific capacitance (521 F·g−1 at 0.5 A·g–1). Due to the resulting rational interfacial structure and stable ion-electron transport, the asymmetric supercapacitors provide a wide voltage window reaching 1.7 V, outstanding bending stability and high energy-power density of 83.87 Wh·kg–1 at 3.4 kW·kg–1. These properties are superior to other reported cases of asymmetric energy enrichment. The synergistic strategy of sodium lignosulfonate on graphene oxide and polyaniline is undoubtedly beneficial to advance the process for the construction of green flexible supercapacitors with remarkably wide voltage windows and excellent bending stability.

关键词： molecular synergy     pseudocapacitive lignosulfonate     flexible electronic devices     asymmetric supercapacitor     wide voltage windows    

HTML PDF 收藏

Synergistic utilization of coal and other energy – Key to low carbon economy

Weidou NI, Zhen CHEN

《能源前沿（英文）》 2011年 第5卷 第1期   页码 1-19 doi: 10.1007/s11708-010-0136-4

摘要： In China, coal is a dominant component of energy mix, and it is expected to remain as such over the next 30 to 40 years. Coal is expected to be used even more in power generation. The direct combustion of coal already has been causing severe pollution and ecological degradation, and it is quite difficult to address the need to reduce greenhouse gas (GHG) given the direct combustion of coal. Therefore, the polygeneration system based on coal gasification, which is one of the major examples of synergistic utilization of coal, is proposed. It is a comprehensive solution to meet the energy challenges China is facing. Furthermore, the synergy of fossil fuels (especially coal) with renewable energy, the synergy of different kinds of energy for energy storage, the synergy of centralized and distributed supply of different kinds of energy, and the synergy of different kinds of energy in smart energy grid (power, gas, heat, and water) are the keys to making China a low-carbon economy. Carbon dioxide (CO ) mitigation in China should begin from the coal-chemical industry given their accumulated relevant experiences. The mitigation process should gradually be transformed into the “IGCC+ polygeneration+ CCUS”. The objectives of this paper are to describe the synergistic utilization of coal, and to analyze the synergy of coal with other energy resources, and to propose the scientific and technological problems to achieve these synergies.

关键词： synergy     clean and efficient utilization of coal     coal-based polygenration     CO2 mitigation     energy storage    

HTML PDF 收藏

继承泰勒级数的关系谱分析：手部肌肉协同与耦合 Research Article

刘刚,王晶

《信息与电子工程前沿（英文）》 2022年 第23卷 第1期   页码 145-157 doi: 10.1631/FITEE.2000578

摘要： 数学中有两种著名的函数分解方法：泰勒级数和傅里叶级数。傅里叶级数发展成为傅里叶频谱，用于信号分解和分析；而泰勒级数的求解需要已知具体函数表达式，所以其在工程领域很少被应用。本文使用树突网络发展了泰勒级数，构造了关系谱，并将其应用于模型或系统分解和分析。了解肌肉激活与手指运动之间的直观联系对于开发无需用户预训练的商业假肢至关重要。然而，由于人手的复杂性，该直观联系尚未被理解。本文使用关系谱分析了肌肉—手指系统。在手指运动中，一块肌肉同时驱动多个手指，多块肌肉同时驱动一个手指。因此，本研究聚焦于手部的肌肉协同与耦合。本文有两个主要贡献：（1）有关手部的发现有助于假肢手的设计；（2）关系谱使在线模型可读，从而统一了在线性能和离线结果。开源代码见https://github.com/liugang1234567/Gang-neuron。

关键词： 泰勒级数；关系谱；树突网络；假肢手；机器学习；工程    

HTML PDF 收藏

吉利自主车型的综合性能开发与CAE 协同优化技术

门永新,唐辉,彭鸿,朱贞英,严永贵

《中国工程科学》 2014年 第16卷 第1期   页码 23-35

摘要：

为了完成集碰撞安全性、乘坐舒适性、结构可靠性和成本控制等诸多性能于一体的车型开发，需要在汽车新产品开发的整个过程中，充分运用计算机辅助工程（CAE）分析技术，通过多学科交叉和多目标优化手段，兼顾综合性能目标和整车开发效率。本文依托吉利车型研发流程，引入参数化柔性技术和多系统优化方法，实施整车碰撞、噪声振动舒适性（NVH）和结构强度等性能的预测和优化，保证整车综合性能和设计效能，最终实现吉利自主品牌车型的高效开发。

关键词： 自主品牌     综合性能     CAE     仿真优化     高效开发    

HTML PDF 收藏

标题 作者 时间 类型 操作

Effect of fiber hybridization on energy absorption and synergy in concrete

Ahmadreza RAMEZANI, Mohammad Reza ESFAHANI

期刊论文

Numerical analysis on heat transfer enhancement by longitudinal vortex based on field synergy principle

WU Junmei, TAO Wenquan

期刊论文

Enhanced synergy between Cu

Jingwei Zhang, Lingxin Kong, Yao Chen, Huijiang Huang, Huanhuan Zhang, Yaqi Yao, Yuxi Xu, Yan Xu, Shengping Wang, Xinbin Ma, Yujun Zhao

期刊论文

Analysis of synergy degree and its influencing factors in hydropower EPC project management

Jiwei ZHU, Hua GAO, Jiangrui WANG

期刊论文

Homoharringtonine synergy with oridonin in treatment of t(8; 21) acute myeloid leukemia

Weina Zhang, Ying Lu, Tao Zhen, Xinjie Chen, Ming Zhang, Ping Liu, Xiangqin Weng, Bing Chen, Yueying Wang

期刊论文

Water resource conservation promotes synergy between economy and environment in China’s northern drylands

期刊论文

investigation and analysis of heat transfer enhancement in channel by longitudinal vortex based on field synergy

TAO Wenquan, WU Junmei

期刊论文

以“区域协同”推动秦巴山区更高质量发展的对策建议

孙志燕,施戍杰

期刊论文

palygorskite composite for the efficient remediation of oil spills via a dispersion-photodegradation synergy

期刊论文

我国半导体硅片发展现状与展望

张果虎,肖清华,马飞

期刊论文

Evaluation of ecosystem health for regional development in the southwestern Beijing, China

LIU Xuehua, ZHANG Shuang, XU Haoyang, SHAO Xiaoming

期刊论文

A pseudocapacitive molecule-induced strategy to construct flexible high-performance asymmetric supercapacitors

期刊论文

Synergistic utilization of coal and other energy – Key to low carbon economy

Weidou NI, Zhen CHEN

期刊论文

继承泰勒级数的关系谱分析：手部肌肉协同与耦合

刘刚,王晶

期刊论文

吉利自主车型的综合性能开发与CAE 协同优化技术

门永新,唐辉,彭鸿,朱贞英,严永贵

期刊论文