全文获取类型
收费全文 | 705篇 |
免费 | 53篇 |
国内免费 | 2篇 |
专业分类
电工技术 | 12篇 |
化学工业 | 199篇 |
金属工艺 | 6篇 |
机械仪表 | 18篇 |
建筑科学 | 40篇 |
矿业工程 | 1篇 |
能源动力 | 36篇 |
轻工业 | 117篇 |
水利工程 | 9篇 |
石油天然气 | 1篇 |
无线电 | 25篇 |
一般工业技术 | 111篇 |
冶金工业 | 28篇 |
原子能技术 | 4篇 |
自动化技术 | 153篇 |
出版年
2024年 | 1篇 |
2023年 | 7篇 |
2022年 | 17篇 |
2021年 | 29篇 |
2020年 | 25篇 |
2019年 | 31篇 |
2018年 | 31篇 |
2017年 | 43篇 |
2016年 | 43篇 |
2015年 | 27篇 |
2014年 | 22篇 |
2013年 | 65篇 |
2012年 | 41篇 |
2011年 | 40篇 |
2010年 | 38篇 |
2009年 | 43篇 |
2008年 | 30篇 |
2007年 | 26篇 |
2006年 | 29篇 |
2005年 | 21篇 |
2004年 | 20篇 |
2003年 | 13篇 |
2002年 | 20篇 |
2001年 | 7篇 |
2000年 | 9篇 |
1999年 | 4篇 |
1998年 | 6篇 |
1997年 | 6篇 |
1996年 | 9篇 |
1995年 | 5篇 |
1994年 | 8篇 |
1993年 | 4篇 |
1992年 | 1篇 |
1991年 | 2篇 |
1990年 | 6篇 |
1989年 | 8篇 |
1988年 | 4篇 |
1986年 | 1篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1981年 | 4篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1975年 | 2篇 |
排序方式: 共有760条查询结果,搜索用时 0 毫秒
41.
Optimization of the application of the Fenton chemistry for the remediation of a contaminated soil with polycyclic aromatic hydrocarbons 总被引:1,自引:0,他引:1
下载免费PDF全文
![点击此处可从《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
42.
Jose R. Infante Luis A. Villarreal Arturo Cisneros Ren D. Peralta Raúl G. Lpez María E. Trevio Jaime Wisniak 《应用聚合物科学杂志》1996,62(13):2311-2316
The assembly of a stirred tank reactor capable of precise reaction temperature control is described. The unit allows easy on-line determination of the thermal effect and calculation of heat transfer coefficients and heat capacities. Construction elements are standard, low cost, and high quality. Temperature control is achieved by a heating-cooling loop integrated to the reactor jacket and a cascade control procedure. An important feature of the equipment is the integration of the data acquisition system with the supervisory control system that allows the capability of an advanced strategy for process control and data acquisition. The capability of the reaction system is demonstrated for the microemulsion polymerization of vinyl acetate, by the use of batch and isothermal operational modes. The course of the reaction is followed on-line by the temperature variation of the jacket. Procedures are described for the calibration of the unit. The reactor developed is versatile, is easy to configure and extend, is low cost, and can compete advantageously with commercial reactor units such as the Mettler RC1. © 1996 John Wiley & Sons, Inc. 相似文献
43.
Arturo Lopez Quintela Mercedes Pazos Pellin Senen Paz Abuin 《Polymer Engineering and Science》1996,36(4):568-573
The kinetics of the reaction between trimethylolpropane (TMP) and epichlorohydrin (ECH) were studied. A mechanism is proposed which involves the synthesis of chlorohydrins, a previous stage which then leads to epoxy resin formation. From this mechanism a set of three coupled non-linear differential equations, (each equation corresponds to each chlorohydrin) was derived and numerical solutions were obtained using a Monte-Carlo method. The concentrations of chlorohydrins determined by this method (41.7, 35.7, and 22.5%) compare well with the experimental GPC results (42.7, 34.7, and 22.6%). The corresponding rate constants for the formation of the chlorohydrins were obtained. 相似文献
44.
Alison Gowman Arturo Rodriguez-Uribe Fantahun Defersha Amar K. Mohanty Manjusri Misra 《应用聚合物科学杂志》2020,137(36):49061
Biocomposites from poly(lactic acid) (PLA) and grape pomace (GP) were created via injection molding to examine the effects of GP in a PLA matrix. To optimize the mechanical performance the biocomposites were compatibilized with maleic anhydride grafted PLA (MA-g-PLA). The objective of this work was to create a model that could accurately predict the mechanical properties of GP/PLA biocomposites. A region of feasibility for the biocomposites was determined using a statistical design of experiments. Linear regression was used to model the mechanical performance and predicted results with an error of 10% for both tensile and flexural strength and 16% for impact strength. The model was verified with a biocomposite of PLA/GP/MA-g-PLA with a ratio of 62/36/2. This biocomposite had a tensile strength, flexural modulus, and impact strength of 25.8 MPa, 40.0 MPa, and 18.4 J/m, respectively. It was found that a linear model can accurately predict the mechanical properties of PLA/GP/MA-g-PLA biocomposites. 相似文献
45.
Jorge Espinosa-Espinosa Anchel Gonzlez-Barriga Arturo Lpez-Castel Rubn Artero 《International journal of molecular sciences》2022,23(3)
Omics studies are crucial to improve our understanding of myotonic dystrophy type 1 (DM1), the most common muscular dystrophy in adults. Employing tissue samples and cell lines derived from patients and animal models, omics approaches have revealed the myriad alterations in gene and microRNA expression, alternative splicing, 3′ polyadenylation, CpG methylation, and proteins levels, among others, that contribute to this complex multisystem disease. In addition, omics characterization of drug candidate treatment experiments provides crucial insight into the degree of therapeutic rescue and off-target effects that can be achieved. Finally, several innovative technologies such as single-cell sequencing and artificial intelligence will have a significant impact on future DM1 research. 相似文献
46.
Vazquez-Velazquez Arturo R. Vazquez-Garcia Rosa . Hernandez-Bucio German Gonzalez-Gonzalez Virgilio A. Moggio Ivana Vazquez-Rodriguez Sofia 《Polymer Bulletin》2020,77(4):1781-1792
Polymer Bulletin - In this work, polypropylene films (PP) and maleic anhydride graft polypropylene (PPgMA) at different concentrations of a photoluminescent dye 2,2′-(1,4-phenylenedivinylene)... 相似文献
47.
Kotteda V. M. Krushnarao Schiaffino Arturo Chattopadhyay Ashesh Shantha-Kumar Sanjay Kumar Vinod Bronson Arturo 《Metallurgical and Materials Transactions B》2019,50(4):1559-1565
Metallurgical and Materials Transactions B - The effect of the surface tension–viscosity dissipation driving liquid Ti flow into a B4C packed bed was analyzed at 1941 K and 2573 K. The model... 相似文献
48.
Acceleration of kinetic monte carlo simulations of free radical copolymerization: A hybrid approach with scaling
下载免费PDF全文
![点击此处可从《American Institute of Chemical Engineers》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Hanyu Gao Linda J. Broadbelt Ivan A. Konstantinov Steven G. Arturo 《American Institute of Chemical Engineers》2017,63(9):4013-4021
Kinetic Monte Carlo (KMC) has been widely used in the simulation of polymeric reactions. The power of KMC is highlighted by its ability to keep track of the length and sequence of every radical or polymer chain, while it is computationally more expensive than deterministic kinetic models. This paper introduces an acceleration method that significantly reduces the computational cost of KMC simulations, while keeping the same features as the full kinetic Monte Carlo simulations. Case studies are used to demonstrate the general applicability of this method to free radical copolymerization. © 2017 American Institute of Chemical Engineers AIChE J, 63: 4013–4021, 2017 相似文献
49.
Antonio R. de Arellano-López Francisco L. Cumbrera Arturo Domínguez-Rodríguez Kenneth C. Goretta Jules L. Routbort 《Journal of the American Ceramic Society》1990,73(5):1297-3000
Compressive creep of SiC-whisker-reinforced Al2 O3 composites (0, 5, 15, and 25 wt% SiC) was measured in the temperature range of 1300° to 1500°C in air and argon. The creep resistance increased with increasing whisker concentration. The results indicated that the whiskers degraded in air, increasing strain rates compared to those in argon. Stress exponents between 1.0 and 2.0 and an activation energy of 620 ± 100 kJ/mol were measured. Transmission electron microscopy observations indicated that cavitation was minimal and that the deformed composites had the same dislocation structure as did the as-received samples. 相似文献
50.
Nischel Maheswaraiah Alvaro V. Sandate Arturo Bronson 《International Journal of Applied Ceramic Technology》2013,10(2):234-244
A Zr–Si liquid reacted with B4C in a graphite enclosure was configured to control the oxygen potential (10?45 kPa) to form a ZrB2 / ZrC / Zr – Si ceramic composite. The graphite enclosure was placed in a temperature gradient with the hot zone at >2133 K to react Zr – Si with B4C and with the opposite end approximating 933–1000 K at the position of an aluminum melt. A ZrB2 / ZrC / Zr – Si composite forms with the scanning‐electron microscope (SEM), microstructures showing rectangular ZrB2 precipitates and hexagonally shaped ZrC precipitates embedded in a Zr – Si matrix. 相似文献