全文获取类型
| 收费全文 | 95篇 |
| 免费 | 23篇 |
| 国内免费 | 5篇 |
专业分类
| 电工技术 | 4篇 |
| 综合类 | 3篇 |
| 化学工业 | 15篇 |
| 金属工艺 | 2篇 |
| 机械仪表 | 3篇 |
| 建筑科学 | 4篇 |
| 矿业工程 | 4篇 |
| 能源动力 | 3篇 |
| 轻工业 | 12篇 |
| 水利工程 | 3篇 |
| 无线电 | 14篇 |
| 一般工业技术 | 23篇 |
| 冶金工业 | 2篇 |
| 原子能技术 | 1篇 |
| 自动化技术 | 30篇 |
出版年
| 2025年 | 5篇 |
| 2024年 | 12篇 |
| 2023年 | 12篇 |
| 2022年 | 11篇 |
| 2021年 | 16篇 |
| 2020年 | 12篇 |
| 2019年 | 8篇 |
| 2018年 | 2篇 |
| 2017年 | 3篇 |
| 2016年 | 4篇 |
| 2015年 | 3篇 |
| 2014年 | 14篇 |
| 2013年 | 2篇 |
| 2012年 | 5篇 |
| 2010年 | 2篇 |
| 2009年 | 2篇 |
| 2008年 | 1篇 |
| 2007年 | 1篇 |
| 2004年 | 2篇 |
| 2003年 | 1篇 |
| 2002年 | 3篇 |
| 2001年 | 1篇 |
| 1997年 | 1篇 |
排序方式： 共有123条查询结果，搜索用时 0 毫秒
1.
为了促进稻米油产业发展,利用CiteSpace和VOSviewer可视化分析工具,对1993—2023年Web of Science（WOS）核心合集中以“rice bran oil”为主题词得到的1 481篇有效文献的年发文量,被引频次,主要发文期刊、研究领域、国家、机构、作者,以及研究热点和前沿等方面进行了分析。结果显示：1993—2023年,稻米油领域的年发文量和被引频次整体呈现上升趋势;稻米油研究在食品科技领域发文量最多,其中Journal of the American Oil Chemists′ Society是发文量最多的期刊;印度、中国和美国等国家发表论文最多;印度科学与工业研究理事会（CSIR）、巴西的坎皮纳斯州立大学、美国农业部（USDA）和巴西的圣保罗大学等是主要的研究机构;Meirelles、Rodrigue以及王兴国是该领域发文量较多的作者;大多数研究聚焦于稻米油的稳定性、稻米油的提取工艺、稻米油中营养成分的活性、稻米油中活性成分的功效以及酯交换和生物柴油的制备。近年来,稻米油的综合营养评价以及副产物的开发利用等成为新的研究热点。未来研究可围绕高效、绿色、经济的稻米油加工工艺以及稻米油在不同领域的进一步开发利用等进行深入探索。 相似文献
2.
随着智能视频监控在安全防范监控领域广泛应用,其相关技术备受国内外专家和研究人员的重视。智能视频监控作为一种综合技术,涉及多个科学领域知识。本文探讨当前国外智能视频监控的研究热点,总结归纳与其相关的研究领域,以期为国内智能视频监控的研究与发展提供借鉴。 相似文献
3.
This paper adds a contribution in the existing literature in terms of theoretical and conceptual background for the identification of idle potentials of marginal rural areas and people by means of technological and institutional innovations. The approach follows ex-ante assessment for identifying suitable technology and institutional innovations for marginalized smallholders in marginal areas-divided into three main parts (mapping, surveying and evaluating) and several steps. Finally, it contributes to the inclusion of marginalized smallholders by an improved way of understanding the interactions between technology needs, farming systems, ecological resources and poverty characteristics in the different segments of the poor, and to link these insights with productivity enhancing technologies. 相似文献
4.
Hotspots: Hotspot‐Engineered 3D Multipetal Flower Assemblies for Surface‐Enhanced Raman Spectroscopy (Adv. Mater. 34/2014) 
下载免费PDF全文
下载免费PDF全文 5.
《Materials and Manufacturing Processes》2012,27(16):1845-1850
ABSTRACTCasting of metal products consists of a series of intricate manufacturing processes that need to be precisely conducted and controlled. Rather than doing process design by a hit-and-trial approach, simulations can be run before casting is actually undertaken in a foundry. These simulations allow to model, verify, and validate the entire casting process along with the prediction of possible defects in the cast products. This study is based on casting an adjuster bracket using traditional mold design approach, and also using simulation. A Computer-Aided Design (CAD) model of the casting is developed in SOLIDWORKS and simulated using MAGMASoft. The results obtained are temperature profile within the mold after pouring, solidification sequence, and casting defects such as porosity and hotspots. Good correlation between experimental and simulation results confirmed sufficient model health to virtually optimize the mold through simulations. The optimized mold design completely removed the hotspot and reduced porosity which is within the machining allowance of the final product. However, the casting yield is reduced by 6% by adding a carefully selected riser in the optimized mold design. It can be concluded that simulations are reasonably accurate in modeling casting process, predicting defects, and modifying casting design using optimization techniques available in the advanced casting simulation software. 相似文献
6.
Yong Wang Xiwang Chang Zhiyuan Li Yueni Mei Yixiao Zhang Lei Liu Ke Wang Haitao Gu Linsen Li 《Advanced functional materials》2023,33(4):2208329
Lithium-ion batteries commonly exhibit a gradual loss of Li-storage capacity during operation and storage. However, they can also abruptly lose much of their capacity in a rollover fashion (i.e., “sudden death”) under aggressive but practically relevant conditions, such as high-voltage operation or cycling at elevated temperatures. Here the origin of rollover failure is investigated in high-energy LiNi0.80Co0.15Al0.05O2-graphite (NCA-Gr) batteries cycled at 55 °C. A combined chemical, structural, and electrochemical studies revealed that severe Li plating at the anode surface is the major reason causing the capacity rollover. The Li plating at elevated temperature is triggered by temperature hotspots resulting from inhomogeneous Li-ion flux, which is a thermodynamic-driven mechanism different from the kinetically limited one at low temperature and/or under fast-charging conditions. A Zr(OH)4-coated, ion-rectifying separator is further designed to enable an NCA-Gr pouch cell with a stable cycle performance for 600 cycles and without a sudden death at 55 °C. 相似文献
7.
Rich and highly dense surface-enhanced Raman (SERS) hotspots available in the SERS-active platform are highly anticipated in SERS measurements. In this work, conventional silicon wafer was treated to have wide exposure to terraces available within the silicon nanostructures (Si-NSs). High-resolution field emission scanning electron microscopic (FESEM) investigations confirmed that the terraces were several microns wide and spread over different steps. These terraces were further decorated with silver nanoparticles (Ag-NPs) of different shapes and sizes to achieve SERS-active hotspots. Based on more than 150 events, a histogram of the size distribution of Ag-NPs indicated a relatively narrow size distribution, 29.64 ± 4.66 nm. The coverage density was estimated to be ~4 × 1010 cm−2. The SERS-activity of Ag-NPs -decorated Si-NSs was found to be enhanced with reference to those obtained in pristine Si-NSs. Finite difference time domain models were developed to support experimental observations in view of electromagnetic (EM) near-field distributions. Three archetype models; (i) dimer of same constituent Ag-NPs, (ii) dimer of different constituent Ag-NPs, and (iii) linear trimer of different constituent Ag-NPs were developed. EM near-field distributions were extracted at different incident polarizations. Si-NSs are well-known to facilitate light confinement, and such confinement can be cascaded within different Ag-NPs-decorated terraces of Si-NSs. 相似文献
8.
This paper focusses on generation of solar irradiation map under clear sky conditions using r.sun model. Direct Irradiation, diffuse irradiation and global irradiation maps are plotted using programme which was developed in C language. This programme calculates different components of solar irradiation using clear sky model (r.sun). Further Surfer software was used to plot different irradiation maps. All three values (Direct Irradiation, Global Irradiation and Diffuse Irradiation) were compared by IMD values for performing statistical analysis i.e. Mean Bias Error (MBE), Root Mean Square Error (RMSE) and standard deviation. MBE was found within ±10%, RMSE lies within <20% and standard deviation was found to have very low value which indicated good fitting between model results and calculated values. Therefore the r.sun model is good model and can be used for computing solar irradiation for India. 相似文献
9.
The emergence of three-dimensional (3D) network-on-chip (NoC) has revolutionized the design of high-performance and energy efficient manycore chips. However, in general, 3D NoC architectures still suffer from high power density and the resultant thermal hotspots leading to functionality and reliability concerns over time. The power consumption and thermal profiles of 3D NoCs can be improved by incorporating a Voltage Frequency Island (VFI)-based power management strategy and Reciprocal Design Symmetry (RDS)-based floor planning. In this paper, we undertake a detailed design space exploration for 3D NoC by considering power-thermal-performance (PTP) trade-offs. We specifically consider a small-world network-enabled 3D NoC (3D SWNoC) in this performance evaluation due to its superior performance and energy-efficiency compared to any other existing 3D NoC architectures. We demonstrate that the VFI-enabled 3D SWNoC lowers the energy-delay-product (EDP) by 57.3% on an average compared to a 2D MESH without VFI. Moreover, by incorporating VFI, we reduce the maximum temperature of 3D SWNoC by 15.2% on an average compared to the non-VFI counterpart. By complementing the VFI-based power management with RDS-based floor planning, the 3D SWNoC reduces the maximum temperature by 25.1% on an average compared to the non-VFI counterpart. 相似文献
10.