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991.
《Food Control》2016
This study examined whether the causal relationships of protection motivation theory (PMT) can be applied to explain and predict the public's behavioural intentions for safe food choice through protection motivation of health and well-being promotion in Taiwan. In addition, the public's perceived food risk management quality and perceived product safety liability of food providers involved in food safety scandals were considered in the PMT model. The results of structural equation modelling indicated that, compared with the original PMT model, the extended PMT model demonstrates higher explanatory and predictive power of a person's protection motivation to mitigate food safety problems, but lower explanatory and predictive power of a person's behavioural intentions to make safe food choices. The empirical results drawn from the extended PMT model revealed that in addition to perceived vulnerability regarding the threat of food safety scandals and perceived self-efficacy, a person's perceived product safety liability of food providers involved in food safety scandals is a significant predictor of his or her protection motivation, which subsequently influences his or her behavioural intentions regarding safe food choices. 相似文献
992.
《Food Control》2013,33(2):719-723
Dry fermented sausage (Petrovská klobása) was coated with chitosan–caraway film. Effect of coating on fatty acid profile, lipid oxidation and sensory property of odor and taste were investigated during five months storage.At the end of storage period, sum of unsaturated and polyunsaturated fatty acids was significantly higher (p < 0.05) in coated than in control sausage.Contents of propanal and pentanal were significantly higher in the control sausage, while the rest of aldehydes content (hexanal, heptanal and octanal) did not differ between control and coated sausage.In both coated and control sausage, TBARS values content increased after two months storage and then remained unchanged until the end of storage period. Between examinated groups of sausages no significant difference was observed (p > 0.05).After two months of storage, sensory property of odor and taste did not differ between examinated groups of sausages, but at the end of storage period this value was significantly higher for coated sausage.Chitosan–caraway coated sausage showed lower intensity of lipid oxidative changes and better sensory properties for odor and taste at the end of five months storage in comparison to control. 相似文献
993.
《Food Control》2005,16(2):169-175
The effect of glazes of various tea extracts upon the storage stability and the quality of bonito fillet and its associated storage deterioration are examined. Fresh bonito fillets were glazed using either water or tea extracts, which had been allowed to ferment to various extents. Ice glazing enhanced the storage quality of the bonito fillet as compared to an untreated sample. Some of the tea-glazing treatments did provide some degree of protection, although some did not. The antioxidant activity of a particular species of tea as impacted upon bonito flesh related substantially to the extent of natural fermentation of the tea species used for glazing. Green tea and Pouchong tea afforded better protection than black tea for both lipid oxidation and protein oxidation within bonito flesh, therefore they maintained a better quality of preserved bonito fillet. The combination of a glazing treatment and the application of green or Pouchong tea extract at a 5% concentration was able to greatly increase the storage quality of the frozen bonito fillets. 相似文献
994.
《Food Control》2000,11(5):365-369
Since 1992 the Ministry of Fishery Industry (MIP) through its Quality Assurance Directorate (DAC) began HACCP implementation works as a basis of its Quality Management System, meeting in this way requirements of its major importers and tailoring to changes in inspection and quality control activities that were taking part worldwide.According to the Minister's Resolution No. 344/1996, HACCP is mandatory for all activities carried out by all entities of MIP, whose activity is related to the manufacturing of fish products from catching operations to its placing in the market.HACCP assessment in fishery establishment is performed in different ways:
- •Submission of HACCP-based Quality Assurance Program (QAP) to DAC for validation. This draft of QAP is revised and returned with suggestions and remarks for its redrafting and new submission.
- •Supervisions performed by DAC and National Fishery Inspection Office (ONIP) specialists to end products, manufacturing process' stages and facilities to verify the compliance of regulations, procedures, cleaning and sanitizing procedures and quality specifications standards.
- •Verifications by means of microbiological, physical, chemical and sensory testing to end products at the reference laboratory requested by DAC
- •Cost/profit assessment of HACCP implementation in fishery establishments with the utilization of Prevention–Appraisal–Failure Model (PAF), according to a procedure developed at the `FAO's Economical Engineering Workshop applied to Fishery Industry, March 1997'.
- •As on January 1998, regulatory audits to HACCP-based QAPs began to be performed in fishery establishments, verifying compliance of applicable documentation (Quality Assurance Programs; Cleaning and Sanitizing Procedures, Working Operational Procedures, and so forth) using the `General Procedure for HACCP Audit's performance in fishery establishments' with a group of auditors made up by DAC specialists and ONIP officer inspectors.
995.
《Food Control》2000,11(5):359-364
In Canada, two food inspection programs have developed to embody internationally recognized principles of safe food processing. The Food Safety Enhancement Program (FSEP) is for establishments registered under the Meat Inspection Act and the Canada Agricultural Products Act, while the Quality Management Program (QMP) is for federally registered fish processing establishments. Both FSEP and QMP are fully compatible with the international HACCP guidelines adopted by Codex alimentarius. Under both QMP and FSEP initiatives, food manufacturers are responsible for the development, implementation and maintenance of HACCP food safety systems. The CFIA is responsible for verifying or auditing that industry operates acceptable systems. 相似文献
996.
《International Journal of Hydrogen Energy》2002,27(1):79-83
Magnesium nickel alloy (Mg2.35Ni) has been considered an excellent hydrogen storage medium because it has a high hydrogen capacity, forms a very stable hydride, is inexpensive, and it presents no environmental hazards. One of the major problems associated with the use of Mg2.35Ni alloy for hydrogen storage is its initial activation for hydrogen uptake. Earlier work in this laboratory showed that treatment of Mg2.35Ni with either liquid water or water vapor, activates the alloy for hydrogen up-take. In the present study, the surface modification of Mg2.35Ni by liquid water and water vapor is characterized. X-ray photoelectron spectroscopy, and transmission electron microscopy suggest the presence of Mg(OH)2 on the surface. It is believed that this is the first report showing the presence of hydroxides on the surface of an active hydrogen storage alloy. 相似文献
997.
Supercritical water gasification of crude glycerol for hydrogen (H2) production is one possible use of crude glycerol from biodiesel production. In this study, a series of central composite designed experiments were conducted to investigate the reforming of crude glycerol for producing a H2 rich gas. A mathematical model defining the effect of glycerol concentration, reaction temperature and KOH concentration was developed with response surface methodology and was used to improve the H2 yield. The study revealed that the optimum reaction conditions for producing H2 were 500°C, 7 wt.% glycerol concentration and 2.39 mol L‐1 KOH concentration. The corresponding pressure was 45 MPa. Under these optimized reaction conditions, the H2 mole fraction yield in the gaseous product was 27.9 ± 0.22 mol%. The mole fraction yields of other gas products (CH4, CO and CO2) were small compared to that of H2. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
998.
Biochemical composition and reactivity are key factors controlling the biodegradability of lignocellulosic residues. In the present study, 14 lignocellulosic substrates including 6 agricultural and 8 forest residues were analyzed for 9 biochemical characteristics, including BioMethane Potential (BMP), Biological Oxygen Demand (BOD), Enzymatic Cellulose Degradation tests (ECD), Van Soest and NREL fractionation methods. The data obtained were exploited by principal component analysis (PCA) and other statistical methods to investigate the possible correlations between the parameters. The study showed that the contents in particular lignin or in non-extractible residues (RES) were the characteristics which influenced most the anaerobic biodegradability (BMP), while the influence of the soluble fraction was quite low. BMP was well correlated with the ratio of the contents in non-lignin over lignin fractions and the cellulose to lignin ratio. Regarding agricultural residues, BMP was better correlated with lignin content than with RES content. Agricultural and forest residues exhibited distinct characteristics of aerobic and anaerobic biodegradability. Good correlation was observed between ECD and lignin content. Finally, it was also observed that Van Soest's and NREL methods did not provide the same results in terms of biochemical composition. 相似文献
999.
《Energy》2005,30(8):1271-1281
Egypt has embarked on an ambitious desert land reclamation program in order to increase total food production. Energy planners for these desert agriculture locations have chosen diesel generation power technology because minimization of the initial capital cost of a power supply system is their top priority. This heavy reliance on diesel generation has negative effects on the surrounding environment including soil, groundwater, and air pollution. Although good solar and wind resource prospects exist for the use of cleaner hybrid power systems in certain desert locations, little research has been done to investigate the economic potential of such systems in Egypt’s desert agriculture sector. Using optimization software, we assess the economics of hybrid power systems versus the present diesel generation technology in a remote agricultural development area. We also consider the emission reduction advantages of using hybrid systems. Interestingly enough, optimization results show that hybrid systems are less costly than diesel generation from a net present cost perspective even with the high diesel fuel price subsidies. Since hybrids are also more environmentally friendly, they represent a strong step towards achieving sustainable desert agriculture. 相似文献
1000.
《Food Control》2017
Following a variety of incidents in China relating to food poisoning due to the presence of pesticide residues, it is crucial to correct for farmers’ unsafe and improper practices towards pesticide use. Although most studies have focused on the role of external stakeholders such as government extension agencies and pesticide retailers, the attention paid to farmers’ intrinsic motivations is limited. This paper applies Structural Equation Modelling to investigate psychological motivational concepts such as farmers’ knowledge and risk perception, their formation mechanisms and the underlying processes of these concepts that lead to farmers’ practices to eliminate pesticide residues, based on a representative survey conducted with 986 Chinese farmers from 20 counties selected from six provinces. We found both a direct and significant effect of farmers’ knowledge on pesticides residue on their safe pesticide practices and also an indirect effect, i.e. knowledge influences on risk perception which in turn enhances safe pesticide practices. It was also reported that government support strategies are more effective in promoting safe pesticide practices than government regulation. 相似文献