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81.
Cold recovery during regasification of LNG part one: Cold utilization far from the regasification facility 总被引:2,自引:0,他引:2
The paper deals with cold recovery during LNG regasification. The applications analyzed pertain to the use in deep freezing agro food industry and in space air conditioning facilities in commercial sector (Supermarkets and Hypermarkets) of cold recovered from the regasification process. 相似文献
82.
A novel method is proposed for the determination of the uniaxial viscosity of porous ceramic layers upon sintering. This approach is based on the application of a continuous but very low tensile stress to the densifying powder compact whose deformation is continuously monitored by an optical system. The viscosity of the system can be determined as a function of temperature and density from the sintering rate differences measured between loaded and unloaded samples. The uniaxial viscosity of porous Y2O3 doped ZrO2 (YSZ) and NiO–YSZ composites was measured using the proposed approach. The results were used to predict the curvature evolution of bilayers used in solid oxide fuel cell applications, obtaining a fairly good agreement between the model and the data recorded experimentally. 相似文献
83.
Emanuele Treossi Andrea Liscio Xinliang Feng Vincenzo Palermo Klaus Müllen Paolo Samorì 《Small (Weinheim an der Bergstrasse, Germany)》2009,5(1):112-119
Temperature‐enhanced solvent vapor annealing (TESVA) is used to self‐assemble functionalized polycyclic aromatic hydrocarbon molecules into ordered macroscopic layers and crystals on solid surfaces. A novel C3 symmetric hexa‐peri‐hexabenzocoronene functionalized with alternating hydrophilic and hydrophobic side chains is used as a model system since its multivalent character can be expected to offer unique self‐assembly properties and behavior in different solvents. TESVA promotes the molecule's long‐range mobility, as proven by their diffusion on a Si/SiOx surface on a scale of hundreds of micrometers. This leads to self‐assembly into large, ordered crystals featuring an edge‐on columnar type of arrangement, which differs from the morphologies obtained using conventional solution‐processing methods such as spin‐coating or drop‐casting. The temperature modulation in the TESVA makes it possible to achieve an additional control over the role of hydrodynamic forces in the self‐assembly at surfaces, leading to a macroscopic self‐healing within the adsorbed film notably improved as compared to conventional solvent vapor annealing. This surface re‐organization can be monitored in real time by optical and atomic force microscopy. 相似文献
84.
A study of the feasibility of providing the heating and cooling needs of the new, large commercial building near Turin, Italy, by means of an open-loop indirect groundwater heat pump (GWHP) system is described. A finite element subsurface flow and transport simulator (FEFLOW) was used to investigate possible configurations of extraction and injection wells for five different scenarios. Modelling results confirmed the hydrogeological capacity of the site to provide the necessary amount of groundwater and associated energy with limited environmental impact. Injection of warmer (or cooler) water in the aquifer creates a thermal plume whose dimensions and geometry depend on the properties of the subsurface formations, particularly their thermal dispersivity values. The study suggests that there are several possible well configurations that could support the GWHP system without adversely affecting the aquifer. 相似文献
85.
Vincenzo Augelli Teresa Ligonzo Roberto Murri Luigi Schiavulli 《Thin solid films》1989,170(2):163-170
Hydrogenated and chlorinated silicon films were used to deposit Schottky barrier solar cells. Photovoltaic characterization, together with the results of electronic transport measurements, led to the conclusion that the presence of chlorine is detrimental to the properties of this kind of device. 相似文献
86.
Antonella De Leonardis Alessandra Aretini Gabriele Alfano Vincenzo Macciola Giancarlo Ranalli 《European Food Research and Technology》2008,226(4):653-659
In this research, a phenol extract of high hydroxytyrosol (OLPE) content was obtained from olive leaves (Olea europaea L.), and subsequently tested under different contexts. The method used to obtain the OLPE basically involved two steps: the
use of strongly-acid aqueous steam, generated from 10% HCl (v/v) at 100°C, to directly hydrolyse the native complex phenols
from integral olive leaves, and OLPE recovery by liquid–liquid extraction with ethyl acetate. Hydrolysis time was 1 h. Finally,
the dried extract was dissolved in distilled water. The OLPE total phenols were determined by Folin–Ciocalteu’s method and
by HPLC analysis. Hydroxytyrosol was about 92% of the total phenols present in OLPE, and the yield was about 0.2% on fresh
leaves. OLPE showed antioxidant effects on different food lipids and did not inhibit lactic acid bacteria growth; however,
it showed cytotoxicity on NIH/3T3 fibroblasts and human umbilical vein endothelial cells at concentrations higher than 0.32 mM
(as hydroxytyrosol). 相似文献
87.
Acrylamide formation in a cookie system as influenced by the oil phenol profile and degree of oxidation 总被引:1,自引:0,他引:1
Gema Arribas-Lorenzo Vincenzo Fogliano Francisco J. Morales 《European Food Research and Technology》2009,229(1):63-72
The purpose of this study was to investigate the effect of the olive oil phenolic compounds as well as of thermoxidised oil
on the formation of acrylamide in a cookies system. Three virgin olive oils having different phenolic profile and a thermoxidised
sunflower oil were selected. Cookies were baked at 190 °C for different times (8–16 min) following a basic recipe where type
of oil was the variable. Additionally to acrylamide (AA), other parameters such as colour, moisture, antioxidant activity
(AOA), and hydroxymethylfurfural (HMF) were measured. Results showed that concentration and composition of phenolic moiety
of virgin olive oil significantly affect the acrylamide formation, particularly at prolonged baking time. Virgin olive oil
with a higher dihydroxy/monohydroxy ratio was more efficient in the AA mitigation and AA was reduced up to 20%. Colour and
AOA were not significantly different among the three types of oils. However, AA is dramatically increased when thermoxidised
oil is used with a parallel increase of browning and HMF. It was concluded that lipid oxidation products should be considered
as an important factor in acrylamide formation during baking of fat-rich products. 相似文献
88.
Vincenzo Levis 《Calcolo》1964,1(3-4):299-336
This Note takes again a late work byM. Volpato, which indicates the resolution. with method of dynamics programming, of a non-linear problem in Econometrics, for decide
theoptimum in a buying and selling business. When involved functions are linear, the question becomes aLP problem whose solutions is given from known methods.
Here, subject shows, by method of Volpato, a very easy proceeding involving only comparisons among the dates of question.
Moreover, the result confirms an intuitive rule of Economical Policy which, perhaps for the first time, is strictly justified.
Lavoro eseguito nell'ambito dell'attività del Gruppo di Ricerca n0 38 (Univ. ca' Foscari-Venezia) del Comitato per la matematica del C.N.R. per l'A.A. 1963–64. 相似文献
Lavoro eseguito nell'ambito dell'attività del Gruppo di Ricerca n0 38 (Univ. ca' Foscari-Venezia) del Comitato per la matematica del C.N.R. per l'A.A. 1963–64. 相似文献
89.
Vincenzo M. Sglavo Paolo Bosetti Elena Trentini Michele Ceschini 《Journal of the American Ceramic Society》1999,82(8):2269-2272
A technique for precracking brittle materials is presented. This procedure, which is called the sandwiched-beam (SB) technique, allows the production of sharp through-thickness cracks with predetermined length in specimens with a rectangular section. A bar, in which an initial notch is produced by using a conventional saw, is inserted between two supporting beams and the sandwich assembly is loaded in three-point bending. Conditions can be defined that allow the stable propagation of a sharp flaw from the notch as the applied load is increased. Then, the cracked bar can be used to determine the fracture toughness. The SB technique is applied to different brittle materials, including soda-lime-silica glass, alumina, Si3 N4 , a SiC w -Si3 N4 composite, graphite, a Ti-Al intermetallic, and Carrara marble. 相似文献
90.
Table olive quality depends on a number of factors, including fruit characteristics, ripening and processing technologies. Volatile and semi-volatile organic compounds, present both in the sample matrix and in the headspace aroma, are responsible for the olive fruit flavour influencing the consumer’s preference. 相似文献