全文获取类型
收费全文 | 133篇 |
免费 | 4篇 |
专业分类
综合类 | 1篇 |
化学工业 | 42篇 |
金属工艺 | 6篇 |
机械仪表 | 3篇 |
建筑科学 | 1篇 |
能源动力 | 8篇 |
轻工业 | 12篇 |
水利工程 | 1篇 |
武器工业 | 2篇 |
无线电 | 9篇 |
一般工业技术 | 26篇 |
冶金工业 | 6篇 |
自动化技术 | 20篇 |
出版年
2023年 | 3篇 |
2022年 | 4篇 |
2021年 | 10篇 |
2020年 | 3篇 |
2019年 | 14篇 |
2018年 | 14篇 |
2017年 | 4篇 |
2016年 | 4篇 |
2014年 | 5篇 |
2013年 | 7篇 |
2012年 | 12篇 |
2011年 | 5篇 |
2010年 | 2篇 |
2009年 | 6篇 |
2008年 | 6篇 |
2007年 | 2篇 |
2006年 | 3篇 |
2004年 | 1篇 |
2002年 | 3篇 |
2001年 | 1篇 |
1999年 | 2篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1992年 | 3篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 4篇 |
1983年 | 1篇 |
1982年 | 1篇 |
排序方式: 共有137条查询结果,搜索用时 15 毫秒
1.
Saricimen Huseyin Kahraman Ramazan Malaibari Zuhair Abdur Rauf Md. 《Protection of Metals and Physical Chemistry of Surfaces》2018,54(5):926-933
Protection of Metals and Physical Chemistry of Surfaces - The objective of this study was to characterize the surfaces of the steel products produced locally during their exposure to the industrial... 相似文献
2.
Naveed Mushtaq Chen Xia Wenjing Dong G. Abbas Rizwan Raza Amjad Ali Sajid Rauf Baoyuan Wang Jung-Sik Kim Bin Zhu 《Ceramics International》2018,44(9):10266-10272
Stable and compatible cathode materials are a key factor for realizing the low-temperature (LT, ≤600?°C) operation and practical implementations of solid oxide fuel cells (SOFCs). In this study, perovskite oxides SrFe1-xTixO3-δ (x?< = 0.1), with various ratios of Ti doping, are prepared by a sol-gel method for cathode material for LT-SOFCs. The structure, morphology and thermo-gravimetric characteristics of the resultant SFT powders are investigated. It is found that the Ti is successfully doped into SrFeO3-δ to form a single phase cubic perovskite structure and crystal structure of SFT shows better stability than SrFeO3-δ. The dc electrical conductivity and electrochemical properties of SFT are measured and analysed by four-probe and electrochemical impedance spectra (EIS) measurements, respectively. The obtained SFT exhibits a very low polarization resistance (Rp), .01 Ωcm2 at 600?C. The SFT powders using as cathode in fuel cell devices, exhibit maximum power density of 551?mW?cm?2 with open circuit voltage (OCV) of 1.15?V at 600?C. The good performance of the SFT cathode indicates a high rate of oxygen diffusion through the material at cathode. By enabling operation at low temperatures, SFT cathodes may result in a practical implementation of SOFCs. 相似文献
3.
Meraj Talha Rauf Hafiz Tayyab Zahoor Saliha Hassan Arslan Lali M. IkramUllah Ali Liaqat Bukhari Syed Ahmad Chan Shoaib Umar 《Neural computing & applications》2021,33(17):10737-10750
Neural Computing and Applications - Lung cancer is a deadly disease if not diagnosed in its early stages. However, early detection of lung cancer is a challenging task due to the shape and size of... 相似文献
4.
Rauf Tavakoli Bakhshi Puyan Mirarab Meysam Shahbazi Khalil 《Theoretical Foundations of Chemical Engineering》2020,54(5):995-1004
Theoretical Foundations of Chemical Engineering - In this work, with the aim of accurate prediction of water content, H2S and CO2 absorption capacity of diethanolamine (DEA) solvent in Khangiran... 相似文献
5.
New Strategy for Polysulfide Protection Based on Atomic Layer Deposition of TiO2 onto Ferroelectric‐Encapsulated Cathode: Toward Ultrastable Free‐Standing Room Temperature Sodium–Sulfur Batteries 下载免费PDF全文
Dingtao Ma Yongliang Li Jingbo Yang Hongwei Mi Shan Luo Libo Deng Chaoyi Yan Muhammad Rauf Peixin Zhang Xueliang Sun Xiangzhong Ren Jianqing Li Han Zhang 《Advanced functional materials》2018,28(11)
The room temperature (RT) sodium–sulfur batteries (Na–S) hold great promise for practical applications including energy storage and conversion due to high energy density, long lifespan, and low cost, as well based on the abundant reserves of both sodium metal and sulfur. Herein, freestanding (C/S/BaTiO3)@TiO2 (CSB@TiO2) electrode with only ≈3 wt% of BaTiO3 additive and ≈4 nm thickness of amorphous TiO2 atomic layer deposition protective layer is rational designed, and first used for RT Na–S batteries. Results show that such cathode material exhibits high rate capability and excellent durability compared with pure C/S and C/S/BaTiO3 electrodes. Notably, this CSB@TiO2 electrode performs a discharge capacity of 524.8 and 382 mA h g?1 after 1400 cycles at 1 A g?1 and 3000 cycles at 2 A g?1, respectively. Such superior electrochemical performance is mainly attributed from the “BaTiO3‐C‐TiO2” synergetic structure within the matrix, which enables effectively inhibiting the shuttle effect, restraining the volumetric variation and stabilizing the ionic transport interface. 相似文献
6.
7.
Z. Iqbal I. Hussain A. Rauf M. Zakaullal Syed Tajammul Hussain A. ul Haq 《Protection of Metals and Physical Chemistry of Surfaces》2012,48(3):371-375
The commercial steel AISI 1010 was coated with AISI 316L steel using Cathodic Arc Plasma Deposition (CAPD) technique. The
coatings were deposited in vacuum and in the presence of nitrogen, acetylene and mixture of the two as reactive gases. The
coatings were deposited as a function of time while other parameters remained constant. The coatings 0.75 to 1.3 μm thick
were adherent and amorphous. The aqueous corrosion properties of the coated samples in 3.5 wt % NaCl solution were studied
by Tafel, cyclic and potentiodynamic polarization measurements. The derived corrosion parameters were then compared among
the various uncoated and coated samples. The study revealed that the coated samples were more corrosion resistant than the
uncoated one. Similarly, the samples coated in the nitrogen + acetylene mixture atmosphere were more corrosion resistant than
the samples coated in only nitrogen and acetylene atmospheres. The corrosion parameters were also compared as a function of
coating time to ascertain best coating thickness. 相似文献
8.
In recent years, a few sequential covering algorithms for classification rule discovery based on the ant colony optimization
meta-heuristic (ACO) have been proposed. This paper proposes a new ACO-based classification algorithm called AntMiner-C. Its
main feature is a heuristic function based on the correlation among the attributes. Other highlights include the manner in
which class labels are assigned to the rules prior to their discovery, a strategy for dynamically stopping the addition of
terms in a rule’s antecedent part, and a strategy for pruning redundant rules from the rule set. We study the performance
of our proposed approach for twelve commonly used data sets and compare it with the original AntMiner algorithm, decision
tree builder C4.5, Ripper, logistic regression technique, and a SVM. Experimental results show that the accuracy rate obtained
by AntMiner-C is better than that of the compared algorithms. However, the average number of rules and average terms per rule
are higher. 相似文献
9.
Li Jiang Hongwei Zhu Rauf Razzaq Minlin Zhu Chunshan Li Zengxi Li 《International Journal of Hydrogen Energy》2012
A series of CexZr1−xO2-based Cu catalysts was synthesized by the co-precipitation method. The influences of copper content, zirconium addition, and ratio of ceria to zirconia on the catalytic activity were investigated. BET, N2O decomposition, XRD, TEM, SEM, EDS, Raman spectroscopy, H2-TPR, TG/DTA, and XPS were used to characterize the catalysts. The catalytic activity was tested in terms of CO conversion and H2 selectivity in H2-rich coal-derived synthesis gas, simulating the actual gas composition of an integrated gasification combined cycle (IGCC) system. The long-term catalyst stability was also examined at 450 °C for 196 h. The addition of zirconium was found to be very important in enhancing catalytic performance. The surface area, copper dispersion, oxygen storage and mobility capacity, reducibility, as well as resistance to sintering all improved after zirconium addition. 相似文献
10.
Sarfaraz Ahmed Mahesar Syed Nasrullah Shah Abdul Waheed Mahesar Aftab Ahmed Kandhro Abdul Rauf Khaskheli Pertab Menghwar 《International Journal of Food Properties》2017,20(8):1913-1920
The aim of this study was to quantify free fatty acid in cottonseed oil (Gossypium) variety by a chemometric approach using Fourier transform infrared spectroscopy. Calibration standards were prepared by gravimetrical mixing of oleic acid (0.1–40 g/100 g) in neutralized cottonseed oil containing <0.1% free fatty acids. Fourier transform infrared technique coupled with partial least square and principle component regression models were used to develop calibrations in the specific absorption region of carbonyl between 1690–1727 cm?1. On the basis of regression coefficient and evaluated free fatty acids results with comparison to titration method, partial least square was found to be more accurate than principle component regression calibration model. All the analyzed cottonseed oil varieties showed high content of free fatty acids in the range of 17.1–38.5%. The results of the present study indicated that Fourier transform infrared method in combination with partial least square or principle component regression could be used as a greener alternative to the standard titration method. 相似文献