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991.
Eduardo Huedo Ugo Bastolla Rubén S. Montero Ignacio M. Llorente 《New Generation Computing》2005,23(4):277-290
The large number of protein sequences, provided by genomic projects at an increasing pace, constitutes a challenge for large
scale computational studies of protein structure and thermodynamics. Grid technology is very suitable to face this challenge,
since it provides a way to access the resources needed in compute and data intensive applications. In this paper, we show
the procedure to adapt to the Grid an algorithm for the prediction of protein thermodynamics, using the GridWay tool. GridWay
allows the resolution of large computational experiments by reacting to events dynamically generated by both the Grid and
the application.
Eduardo Huedo, Ph.D.: He is a Computer Engineer (1999) and Ph.D. in Computer Architecture (2004) by the Universidad Complutense de Madrid (UCM).
He is Scientist in the Advanced Computing Laboratory at Centro de Astrobiología (CSIC-INTA), associated to NASA Astrobiology
Institute. He had one appointment in 2000 as a Summer Student in High Performance Computing and Applied Mathematics at ICASE
(NASA Langley Research Center). His research areas are Performance Management and Tuning, High Performance Computing and Grid
Technology.
Ugo Bastolla, Ph.D.: He received his degree and Ph.D. in Physics in Rome University, with L. Peliti and G. Parisi respectively. He was interested
from the beginning in biologically motivated problems, therefore, studied models of Population Genetics, Boolean Networks,
Neural Networks, Statistical Mechanics of Polymers, Ecological and Biodiversity. His main research interest is constituted
by studies of protein folding thermodynamics and evolution. Thereby, he set up an effective energy function allowing prediction
of protein folding thermodynamics, and applied it to protein structure prediction, to simulate protein evolution and to analyze
protein sequences from a thermodynamical point of view. He is currently in the Bioinformatic Unit of the Centro de Astrobiología
of Madrid.
Rubén S. Montero, Ph.D.: He received his B.S. in Physics (1996), M.S in Computer Science (1998) and Ph.D. in Computer Architecture (2002) from the
Universidad Complutense de Madrid (UCM). He is Assistant Professor of Computer Architecture and Technology at UCM since 1999.
He has held several research appointments at ICASE (NASA Langley Research Center), where he worked on computational fluid
dynamics, parallel multigrid algorithms and Cluster computing. Nowadays, his research interests lie mainly in Grid Technology,
in particular in adaptive scheduling, adaptive execution and distributed algorithms.
Ignacio M. Llorente, Ph.D.: He received his B.S. in Physics (1990), M.S in Computer Science (1992) and Ph.D. in Computer Architecture (1995) from the
Universidad Complutense de Madrid (UCM). He is Executive M.B.A. by Instituto de Empresa since 2003. He is Associate Professor
of Computer Architecture and Technology in the Department of Computer Architecture and System Engineering at UCM and Senior
Scientist at Centro de Astrobiología (CSIC-INTA), associated to NASA Astrobiology Institute. He has held several appointments
since 1997 as a Consultant in High Performance Computing and Applied Mathematics at ICASE (NASA Langley Research Center).
His research areas are Information Security, High Performance Computing and Grid Technology. 相似文献
992.
The influence the image of the product shown on food packaging labels has on product perception during tasting: Effects and gender differences 下载免费PDF全文
Iván Lidón Rubén Rebollar Ignacio Gil‐Pérez Javier Martín José L. Vicente‐Villardón 《Packaging Technology and Science》2018,31(10):689-697
Many food packages on the market show an image of the product contained inside or the ingredients with which the product was produced. During the packaging design process, it is the job of the designer or the marketing team to decide which specific image will be depicted on the packaging. This paper analyses the potential implications of this decision by studying the influence that the visual appearance of the product pictured on the packaging has on the way consumers perceive the product during consumption. Two packaging designs for apple sauce were created; the only variable was the visual appearance of the apple displayed: one showed a red apple and the other showed a green one. The 147 participants in this between‐subjects experiment tasted and evaluated six product attributes (Sweet, Acidic, Intense Flavour, Healthy, Natural, and Quality) as well as Liking and Willingness to buy. The results of a MANOVA‐Biplot analysis show that the visual appearance of the product pictured affects Liking, Willingness to buy, and some product attributes. In fact, a strong positive relationship was identified between the attribute Healthy and the perceived quality of the product with Liking and Willingness to buy; if one of these attributes scored higher, the higher score was extrapolated to the others. The study also shows that gender differences exist as these effects do not affect all consumers equally, with women being more sensitive to them than men. This paper discusses the implications of these results for the food industry, for packaging designers and for marketers. 相似文献
993.
Sergio J. Quesada Fernando Borrs Miguel García‐Vlez Carmen Coya Esteban Climent Carmen Munuera Ignacio Villar Víctor A. de la Pea O'Shea Alicia de Andrs ngel L. lvarez 《Small (Weinheim an der Bergstrasse, Germany)》2019,15(40)
A deep comprehension of the local anodic oxidation process in 2D materials is achieved thanks to an extensive experimental and theoretical study of this phenomenon in graphene. This requires to arrange a novel instrumental device capable to generate separated regions of monolayer graphene oxide (GO) over graphene, with any desired size, from micrometers to unprecedented mm2, in minutes, a milestone in GO monolayer production. GO regions are manufactured by overlapping lots of individual oxide spots of thousands µm2 area. The high reproducibility and circular size of the spots allows not only an exhaustive experimental characterization inside, but also establishing an original model for oxide expansion which, from classical first principles, overcomes the traditional paradigm of the water bridge, and is applicable to any 2D‐material. This tool predicts the oxidation behavior with voltage and exposure time, as well as the expected electrical current along the process. The hitherto unreported transient current is measured during oxidation, gaining insight on its components, electrochemical and transport. Just combining electrical measurements and optical imaging estimating carrier mobility and degree of oxidation is possible. X‐ray photoelectron spectroscopy reveals a graphene oxidation about 30%, somewhat lower to that obtained by Hummers' method. 相似文献
994.
Quantum Boxes: Configuring Electronic States in an Atomically Precise Array of Quantum Boxes (Small 28/2016) 下载免费PDF全文
Sylwia Nowakowska Aneliia Wäckerlin Ignacio Piquero‐Zulaica Jan Nowakowski Shigeki Kawai Christian Wäckerlin Manfred Matena Thomas Nijs Shadi Fatayer Olha Popova Aisha Ahsan S. Fatemeh Mousavi Toni Ivas Ernst Meyer Meike Stöhr J. Enrique Ortega Jonas Björk Lutz H. Gade Jorge Lobo‐Checa Thomas A. Jung 《Small (Weinheim an der Bergstrasse, Germany)》2016,12(28):3741-3741
995.
Ignacio Moreno-Villoslada Marlén Jofré Patricio Chandía Susan Hess Carlos Elvira Toshimichi Shibue 《Polymer》2006,47(19):6496-6500
Evidences of the π-stacking of rhodamine B onto poly(sodium 4-styrenesulfonate) are given by 1H NMR spectroscopy. As a consequence of these π-π interactions, changes on the diafiltration and UV-vis absorbance and fluorescence patterns are shown comparing water-soluble polymers containing aromatic rings as poly(sodium 4-styrenesulfonate) and poly(N-methacryloyl-5-aminosalicylic acid) with other polyanions that do not contain aromatic rings as poly(sodium vinylsulfonate) and poly(acrylic acid). 相似文献
996.
Enantioselective Mukaiyama aldol reactions of different α-ketoesters was tested with copper complexes of chiral Box and azaBox ligands in both homogeneous and heterogeneous systems. Results in the homogeneous reactions were greatly influenced by the nature of the ketoester, the chiral ligand, and the reaction solvent. In the case of supported catalysts, the use of strongly coordinating azaBox ligands prevented the leaching of metal but reduced the Lewis acidity, and thus the catalytic activity, and did not solve the problem of poisoning by strong coordination of products, byproducts, or solvents. The counter-ion effect also was very significant, and electrostatic immobilization was efficient only with Box ligands (up to 86% ee at room temperature), whereas covalent immobilization allowed the use of azaBox ligands (up to 85% ee at room temperature) in the heterogeneous phase. Recovered deactivated solids could be reused in a reaction with a completely different mechanism that does not require acid centers, such as cyclopropanation. 相似文献
997.
Ricardo Pérez-Castillo Barbara Weber Ignacio García-Rodríguez de Guzmán Mario Piattini Jakob Pinggera 《Software and Systems Modeling》2014,13(3):1117-1139
Many present-day companies carry out a huge amount of daily operations through the use of their information systems without ever having done their own enterprise modeling. Business process mining is a well-proven solution which is used to discover the underlying business process models that are supported by existing information systems. Business process discovery techniques employ event logs as input, which are recorded by process-aware information systems. However, a wide variety of traditional information systems do not have any in-built mechanisms with which to collect events (representing the execution of business activities). Various mechanisms with which to collect events from non-process-aware information systems have been proposed in order to enable the application of process mining techniques to traditional information systems. Unfortunately, since business processes supported by traditional information systems are implicitly defined, correlating events into the appropriate process instance is not trivial. This challenge is known as the event correlation problem. This paper presents an adaptation of an existing event correlation algorithm and incorporates it into a technique in order to collect event logs from the execution of traditional information systems. The technique first instruments the source code to collect events together with some candidate correlation attributes. Based on several well-known design patterns, the technique provides a set of guidelines to support experts when instrumenting the source code. The event correlation algorithm is subsequently applied to the data set of events to discover the best correlation conditions, which are then used to create event logs. The technique has been semi-automated to facilitate its validation through an industrial case study involving a writer management system and a healthcare evaluation system. The study demonstrates that the technique is able to discover an appropriate correlation set and obtain well-formed event logs, thus enabling business process mining techniques to be applied to traditional information systems. 相似文献
998.
Element mobility during the hydrothermal alteration of rhyolitic rocks of the Los Azufres geothermal field, Mexico 总被引:3,自引:0,他引:3
Kailasa Pandarinath Peter Dulski Ignacio S. Torres-Alvarado Surendra P. Verma 《Geothermics》2008,37(1):53-72
The effects of hydrothermal alteration on major, rare-earth, and other trace-element concentrations in rhyolitic rocks of the Los Azufres geothermal field, Mexico, were investigated by statistically comparing the chemical compositions of altered drill cuttings (taken above 450 m depth) with those of fresh rock outcrop samples. Altered rhyolitic rocks show predominantly vitreous and fluidal textures, with alteration products (mainly clay minerals, chlorites and, less commonly, sericite) comprising up to 40% of the rock mass; cryptocrystalline quartz, chlorite, and zeolites fill fractures and vesicles. In altered rocks the greater statistical variances of several elements (Y, Ce, Pr, Nd, Sm, Lu, and Pb) are probably due to alteration effects, whereas smaller variances for CaO, Sr, Rb/Sr, and Rb/Ba suggest that alteration processes have resulted in more uniform chemical compositions. Only MnO, P2O5, Ta, Zr, and Nb have significantly different concentrations in hydrothermal altered rocks as compared to fresh rocks. MnO, P2O5, Ta, Rb/Zr, and Rb/Nb decrease, whereas Zr, Nb, and Nb/Y increase in the altered rocks. The present study stresses that caution should be taken when using these chemical parameters for petrogenetic studies of old hydrothermally altered areas, particularly with rhyolitic rocks. Rare-earth element (REE) concentrations were not significantly different between fresh and altered rhyolitic rocks. This may indicate that these elements were relatively immobile during the hydrothermal alteration processes affecting the rhyolites at Los Azufres, or more likely that they were reincorporated into hydrothermal minerals after being mobilized from the primary phases. 相似文献
999.
Ignacio Juvells Santiago Vallmitjana Estela Martín-Badosa Arturo Carnicer 《Journal of Modern Optics》2013,60(2):313-325
Abstract The problem of detecting patterns in moved scenes is analysed. The correlation when the input scene presents a relative motion with respect to the recording system image is studied analytically and an original method for detecting patterns by means of a binary joint transform correlator is presented. The method is based on the compensation of the sign errors introduced in the joint power spectrum by the transfer function of the degradation. Two alternatives to determine the sign of the transfer function are demonstrated: the first is based on an algorithm to extract information from the Fourier spectrum of the blurred image and the second method determines the sign errors by post-processing the correlation. Digital simulations and optical results are provided. 相似文献
1000.
Rosario Mazarro Ignacio Gracia Juan F. Rodríguez Giuseppe Storti Massimo Morbidelli 《Polymer International》2012,61(2):265-273
The kinetics of ring‐opening polymerization of D ,L ‐lactide with 2‐ethylhexanoic acid zinc (II) salt as catalyst and methanol as co‐catalyst at different temperatures is investigated. A previously proposed kinetic model accounting for reactions such as activation, propagation, chain transfer, transesterification and thermal non‐radical random chain scission has been applied to simulate the experimental results of conversion and average molecular weights. The relevance of some side reactions, mainly transesterifications and chain scission, has been verified all over the studied temperature range and the corresponding rate constants have been estimated. Copyright © 2011 Society of Chemical Industry 相似文献